• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    composite sheet material, disposable garment, composite sheet material production method and production apparatus for a composite sheet material. The present invention provides a composite sheet material in which a three-dimensional sheet material and a flat sheet material are firmly joined together and which is excellent in ventilation and the like, soft and pleasant to the touch. in the composite sheet material, a three-dimensional sheet material (2) having a large number of protruding portions (3) formed thereon and a flat sheet material (4) not having such protruding portions are layered on top of each other and United. the three-dimensional sheet material (2) is joined to the flat sheet material (4) in joining parts (5) separately from the protruding portions (3). a plurality of joining parts (5) are formed around each projecting portion (3) in such a way as to surround the projecting portion (3). the area of the joining part (5) is less than 50% of that of a base (7) surrounded by the protruding portions (3). some of the joining parts (5) are provided with a through hole (8) penetrating the composite sheet material (1).
    公开号:BR112015010064B1
    申请号:R112015010064-3
    申请日:2013-11-15
    公开日:2021-06-01
    发明作者:Takao Wada
    申请人:Zuiko Corporation；
    IPC主号:
    专利说明:

    TECHNICAL FIELD
    [0001] The present invention relates to a composite sheet material used as a surface sheet for disposable garments such as disposable diapers and the like. More specifically, the present invention relates to a composite sheet material in which a three-dimensional sheet material and a flat sheet material are firmly joined together and which is excellent in ventilation and the like, soft and pleasant to the touch. ; a disposable article of clothing wearing the same; and a production method and a production apparatus for said composite sheet material. FUNDAMENTALS OF THE INVENTION
    [0002] Conventional composite sheet materials used as a surface sheet for a disposable garment include one in which a three-dimensional sheet material having a large number of protruding portions formed thereon and a flat sheet material having no such protruding portions they are layered on top of each other (for example, see patent literature 1). A disposable garment provided with a surface sheet consisting of this composite sheet material is dressed in such a way that protruding portions protrude towards the wearer's skin, thereby providing an excellent wear feel as well as preventing liquid leakage effectively. List of Citation Patent Literature LPT 1: JP 2004-174234 A SUMMARY OF THE INVENTION Technical problem
    [0003] Conventional composite sheet material is produced by, using a pair of shaping rollers each having, on the circumferential surfaces thereof, a large number of recessed and raised shapes that mate with each other, passing a sheet material into the coupling part and thereby forming, using the recesses in the roller, raised portions in the sheet material to obtain a three-dimensional sheet material; securing the three-dimensional sheet material to the circumferential surface of one of the rollers by suction and disposing a flat sheet material onto the three-dimensional sheet material; and joining the two sheet materials by welding or the like around the recesses in the roll.
    [0004] Thereby, in the composite sheet material obtained, the whole of the three-dimensional sheet material excluding the parts where protruding portions are formed is joined to the flat sheet material (such region excluding the protruding portions is hereinafter referred to as "base") .
    [0005] Therefore, in this conventional composite sheet material, the bonding area of the three-dimensional sheet material to the flat sheet material is large, that is, the area in which the sheet materials are in a film-like state or similar, due to welding is also large. Therefore, it is not easy to improve the smoothness of the entire composite sheet material. Furthermore, the three-dimensional sheet material, in which the bases adjacent to the protruding portions are joined to the flat sheet material, is excellent in shape-holding property and less prone to change its shape when pressed. In view of these points as well, it is not easy to improve the flexibility of the composite sheet material. As a result, it is not easy to further improve the texture and feel when wearing this composite sheet material used as a surface sheet material.
    [0006] Due to the largeness of the bonding area, applying a higher pressure is not easy, and as a consequence firm bonding over the entire bonding area is not easy. When the three-dimensional sheet material and the flat sheet material are not sufficiently joined and an external or similar force disjoins the sheet materials, there is a risk that the sheet materials may shift relative to each other and that the three-dimensional shapes of the protruding portions may not be sustained.
    [0007] In addition, the transformation of sheet materials into a film-like state as a result of welding, that is, the transformation occurring in large areas each surrounded by the raised portions, causes a problem of decreased ventilation and permeability of liquid from the composite sheet material as a whole.
    [0008] In view of the above problems, the present invention is directed to a composite sheet material in which a three-dimensional sheet material and a flat sheet material are firmly joined together and which is excellent in ventilation and the like. similar, soft and pleasant to the touch; and a production method and a production apparatus therefor. SOLUTION TO THE PROBLEM
    [0009] To solve the above problems, the present invention is constituted as follows, when described with reference to Fig. 1 to Fig. 9 showing embodiments of the present invention for example.
    [00010] Aspect 1 of the present invention relates to a composite sheet material in which a three-dimensional sheet material (2) having a large number of protruding portions (3) formed thereon and a flat sheet material (4) not having such protruding portions are layered on top of each other and joined, the three-dimensional sheet material (2) being joined to the flat sheet material (4) in joint portions (5) separate from the protruding portions (3).
    [00011] Aspect 2 of the present invention relates to a disposable garment using the composite sheet material (1) according to Aspect 1 of the present invention.
    [00012] Aspect 3 of the present invention relates to a method of producing composite sheet material comprising,
    [00013] guide a first sheet material (17) between a first shaping roller (11) having, on the circumferential surface thereof, recesses for shaping (21) and a second shaping roller (12) having, on the circumferential surface of the even, shaping protrusions (24) to form a three-dimensional sheet material (2) having a large number of protruding portions (3) formed thereon;
    [00014] disposing a flat sheet material (4) consisting of a second sheet material (19) on the three-dimensional sheet material (2); and
    [00015] pressure weld the three-dimensional sheet material (2) and the flat sheet material (4) to each other in separate parts of the protruding portions (3) to generate joining parts (5).
    [00016] Aspect 4 of the present invention relates to a production apparatus for a composite sheet material in which a three-dimensional sheet material (2) having a large number of protruding portions (3) and a flat sheet material (4) not having such protruding portions, they are layered on top of each other to be joined,
    [00017] the apparatus comprising a first shaping roller (11), a second shaping roller (12), and press rollers (13) arranged parallel to each other in an axial direction,
    [00018] the first shaping roller (11) having, on the circumferential surface thereof, a large number of recesses for shaping (21) and having a shaping position (14) and pressing positions (15, 16) defined on the surface roll circumferential in this order from the upstream side of the direction of rotation,
    [00019] the second shaping roll (12) having, on the circumferential surface thereof, a large number of shaping protrusions (24), and facing the first shaping roll (11) in the shaping position (14), where the modeling bosses (24) mate with the modeling recesses (21),
    [00020] or the first shaping roller (11) or the pressing rollers (13) having, on the circumferential surface thereof, projections for pressure welding (25) protruding outwards in a radial direction,
    [00021] the first forming roller (11) and the pressing rollers (13) facing each other in the pressing positions (15, 16) so that the tips of the pressure welding projections (25) press the material of three-dimensional sheet (2) and the flat sheet material (4) superimposed on each other.
    [00022] The joint part, which is separate from the protruding portions, represents only a part of the base not including the protruding portions, and the joint area is smaller than the entire base. Therefore, when the three-dimensional sheet material and the flat sheet material are pressure welded together at these joining parts, these sheet materials are firmly joined together by high pressure. In addition, since each joining part is small, the composite sheet material is smooth, and since the protruding portions are pushed away from the joining parts, they easily change their shapes when pressed, exhibiting excellent flexibility. Furthermore, since the joining area is small, even when the joining part is in a film-like state or the like, the composite sheet material as a whole can maintain excellent ventilation and excellent liquid permeability. . Thus, a disposable garment in accordance with Aspect 2 of the present invention using the composite sheet material as an absorbent surface sheet or the like provides good texture and excellent wear feel.
    [00023] The composite sheet material is not limited to one produced by a specific production method or to a specific production apparatus. However, the composite sheet material is preferably produced by Aspect 3 or 4 of the present invention so that the three-dimensional sheet material and the flat sheet material can be easily and assuredly joined together in predetermined joining parts.
    [00024] In this case, in the composite sheet material production apparatus of Aspect 4 of the present invention, the projections for pressure welding above may be provided on the circumferential surface of either the first forming roll or the press rolls. However, it is preferred that the projections for pressure welding are provided on the circumferential surface of the first forming roller at positions remote from the forming recesses so that the obtained composite sheet material has the joining parts in predetermined relative positions with respect to the protruding portions formed by the recesses for shaping, that is, in positions separate from the protruding portions.
    [00025] The joining part only has to be separated from the protruding portions. However, preferably a plurality of joint portions are formed around each projecting portion in such a way as to surround the projecting portion so that the shape of the projecting portion can be more securely supported by the surrounding joint portions. Furthermore, the joining part is preferably formed in the large part surrounded by the adjacent protruding portions, i.e. the part furthest away from any of the adjacent protruding portions, so that the three-dimensional sheet material and the flat sheet material can be tightly joined together while the shapes of the protruding portions are maintained with appropriate flexibility. In particular, the joining part is preferably formed only in the large part surrounded by the adjacent protruding portions.
    [00026] Thus, in the composite sheet material production apparatus of Aspect 4 of the present invention, a plurality of projections for pressure welding is preferably provided around each recession for shaping in such a way as to surround the recession preferably in the portion. large surrounded by adjacent modeling recesses, that is, the farthest part of any of the surrounding modeling recesses.
    [00027] The area of the joining part is not limited to a specific size. However, when it is too small, there is a risk that the three-dimensional sheet material and the flat sheet material can become disjointed, and when it is too large, sufficient flexibility improvement of the composite sheet material cannot be readily obtained. Therefore, the area of the joining part is preferably less than 50% of that of the base surrounded by the protruding portions, more preferably about 5 to 30% thereof, and even more preferably 10 to 25% thereof. The "base surrounded by the protruding portions" above refers to a region, in plan view, surrounded by lines each connecting adjacent two center points of the protruding portions bordering the joining part excluding the parts where the protruding portions are formed. In cases where a plurality of joining parts is formed at the base surrounded by the protruding portions, the "joining part area" above refers to the total of the areas of all joining parts.
    [00028] The three-dimensional sheet material and the flat sheet material only have to be joined at the joining parts at the time of pressure welding and can be joined using an adhesive or the like. However, they are preferably joined by heat welding at the time of pressure welding without the use of an adhesive because, in this case, not using any adhesive or the like leads to reduced cost and furthermore prevents the sheet material composite becomes rigid.
    [00029] Thus, in the composite sheet material production apparatus of Aspect 4 of the present invention, preferably at least either the first forming roll or the pressing roll comprises a heating means for heating the three-dimensional sheet material and the flat sheet material, which are pressed by the projections for pressure welding, so that both sheet materials can be welded together at the time of pressure welding.
    [00030] In this case, in the apparatus for producing the composite sheet material, it is preferred that a plurality of press rollers is provided around the first forming roller so that each joining part can be pressure welded several times and, therefore, press welded firmly even when improving a production rate and the like has decreased press weld time at each press position. Furthermore, such a plurality of press rollers can also pressure weld the multiple joining parts formed in the large area.
    [00031] In the above case, it is preferred that the projections for pressure welding are provided on the circumferential surface of the first forming roll so that the three-dimensional sheet material and the flat sheet material can be transported together with the circumferential surface of the first forming roller without causing displacement of position with respect to the projections for pressure welding, and thus each joint part can be certainly pressed several times by the projections for pressure welding and the plurality of press rollers without causing displacement of position.
    [00032] Even when the joining part is in a film-like state as a result of heat welding, since the area of the joining part is small, excellent ventilation and excellent liquid permeability can be obtained. Additionally, in such a case, preferably at least some joining parts are provided with a through hole penetrating the composite sheet material so that the three-dimensional sheet material and the flat sheet material can be firmly joined around the through hole and that the composite sheet material can exhibit more excellent ventilation and more excellent liquid permeability due to the through hole. Through holes can be formed by increased pressure in press welding, a small protrusion formed at the tip of the projection for press welding, or tension applied to the composite sheet material after welding. ADVANTAGEOUS EFFECTS OF THE INVENTION
    [00033] Constituted and functioning as described above, the present invention produces the following effects. (1) Since the joining parts are separated from the protruding portions and the area of the joining part is less than that of the base surrounded by the protruding portions, the three-dimensional sheet material and the flat sheet material can be firmly joined together. another in these high pressure joint parts. As a result, the three-dimensional sheet material and the flat sheet material are not at risk of becoming disjointed at the joining parts and thus of shifting relative to each other, and thus excessive changes can be prevented or the disappearance of the three-dimensional shapes of the protruding portions due to displacement. (2) Since the area of the joining part is small, the stiffness of the composite sheet material caused by joining can be reduced. Additionally, since the joining portions are separate from the protruding portions, each protruding portion easily changes its shape when pressed and the composite sheet material as a whole can exhibit excellent flexibility. As a result, a disposable garment using this composite sheet material as an absorbent surface sheet or the like provides good texture and excellent wear feel. (3) Since the area of the joining part is small, even when the three-dimensional sheet material and the flat sheet material are firmly joined together and these joining parts are in a film-like state or the like , the composite sheet material as a whole can maintain excellent ventilation and excellent liquid permeability. BRIEF DESCRIPTION OF THE FIGURES
    [00034] Fig. 1 is a broken perspective view of a composite sheet material, showing an embodiment of the present invention.
    [00035] Fig. 2 is a plan view of the composite sheet material according to the embodiment of the present invention.
    [00036] Fig. 3 is an enlarged plan view of the main part of the composite sheet material according to the embodiment of the present invention.
    [00037] Fig. 4 is an enlarged cross-sectional view of the main part of the composite sheet material according to the embodiment of the present invention.
    [00038] Fig. 5 is an exploded cross-sectional view showing a schematic configuration of a disposable garment according to the embodiment of the present invention.
    [00039] Fig. 6 is a schematic configuration view of an apparatus for producing composite sheet material according to the embodiment of the present invention.
    [00040] Fig. 7 is an enlarged cross-sectional view of the main part of the apparatus for producing the composite sheet material according to the embodiment of the present invention.
    [00041] Fig. 8 is an enlarged plan view of the main part of the composite sheet material according to Variation 1 of the present invention.
    [00042] Fig. 9 is an enlarged plan view of the main part of the composite sheet material according to Variation 2 of the present invention. DESCRIPTION OF MODALITIES
    [00043] The present invention will be concretely described below, with reference to the figures. However, the present invention is not limited to the embodiment described below.
    [00044] As shown in Fig. 1 to Fig. 4, the composite sheet material (1) comprises a three-dimensional sheet material (2) having a large number of protruding portions (3) and a flat sheet material (4) not having such protruding portions, which is layered in the three-dimensional sheet material (2). The three-dimensional sheet material (2) and the flat sheet material (4) are joined together by welding in joining parts (5) formed in positions separate from the protruding portions (3) and are integrated with each other.
    [00045] The materials of three-dimensional sheet material (2) and flat sheet material (4) are not limited to some specifics. For example, non-woven fabrics produced by various processes, such as an air through non-woven fabric, a spun cord non-woven fabric, a rolled-up non-woven fabric, and a melt-blown non-woven fabric, are used. The three-dimensional sheet material (2) and the flat sheet material (4) can be the same or different from each other in material.
    [00046] As shown in Fig. 2, in this embodiment, the flat sheet material (4) is formed with a width greater than that of the three-dimensional sheet material (2), and a large number of protruding portions (3) is formed across the entire width of the narrower (2) three-dimensional sheet material. Thereby, the composite sheet material (1), along both side edges, has flat areas (6) having no raised portions formed. The flat areas (6) are formed only from the flat sheet material (4), well maintaining the smoothness of all the composite sheet material (D-
    [00047] As shown in Fig. 5, for example, in cases where the composite sheet material (1) is used as a surface sheet (29) for an absorber (28) of a disposable diaper (27), advantageously the flat area (6) can be easily joined to another sheet such as a three-dimensional take-up sheet (30). The flat area (6) can also be folded and used in such a way as to enclose both side edges of the absorber (28). Reference numeral (31) indicates a filiform elastic member attached to the three-dimensional take-up sheet (30), reference numeral (32) indicates a spread sheet, reference numeral (33) indicates a back seat, and reference numeral (34 ) indicates an outer layer sheet.
    [00048] In the present invention, the widths of three-dimensional sheet material (2) and flat sheet material (4) are not limited to specific ones. The width of the three-dimensional sheet material (2) can be the same as or greater than that of the flat sheet material (4). The raised portions (3) are formed across the same width as that of the narrower sheet material or in an area having an additional narrower width.
    [00049] As shown in Fig. 2 and Fig. 3, four joining parts (5) are formed around each protruding portion (3) in such a way as to surround the protruding portion (3). The joining part (5) is formed in the large part surrounded by the adjacent protruding portions (3), i.e. the part farthest from any of the adjacent protruding portions (3). That is, in this mode, each protruding portion (3) is arranged in such a way that the center of the protruding portion (3) can be situated at each vertex of a quadrangle in a plan view and the joining part (5) is formed at the center of the quadrangle.
    [00050] The dimensions of the protruding portion (3) and joining part (5) are not limited to some specifics. However, for example, the protruding portion (3) is preferably equivalent to a true circle with a diameter of about 0.5 to 10 mm and the joining part (5) is preferably equivalent to a true circle with a diameter of about about 0.5 to 10 mm. 0.1 to 2 mm.
    [00051] In addition, the area of the joining part (5) is preferably less than 50% of that of the base (7) surrounded by the protruding portions (3). For example, in Fig. 3, the area of the joining part (5) is defined to, for example, about 20% with respect to the area of the above quadrangle excluding the parts where the protruding portions (3) are formed (i.e., base).
    [00052] As shown in Fig. 4, a through hole (8) penetrating the composite sheet material (1) is formed in some of the joining parts (5) to improve ventilation and liquid permeability of the entire sheet material composite (1). In the present invention, However, when the ventilation and liquid permeability of the three-dimensional sheet material (2) and flat sheet material (4) are high enough, the through hole (8) can be omitted. Alternatively, to further improve ventilation and liquid permeability, the through hole (8) can also be formed throughout the joint.
    [00053] Next, an apparatus for producing the composite sheet material and a production method using said production apparatus will be described.
    [00054] As shown in Fig. 6, a production apparatus (10) of this composite sheet material comprises a first forming roller (11), a second forming roller (12), and two press rollers (13, 13 ) arranged parallel to each other in the axial direction.
    [00055] On the circumferential surface of the first forming roller (11), a forming position (14), a first pressing position (15), and a second pressing position (16) are defined in order from the side to upstream of the direction of rotation. The second forming roller (12) faces the first forming roller (11) in the forming position (14) and the press rollers (13, 13) facing the first forming roller (11) in the first pressing position (15 ) and the second pressing position (16), respectively.
    [00056] The production apparatus (10) further comprises a first supply means (18) and a second supply means (20). The first supply means (18) supplies a first sheet material (17) from a supply device not shown in the figure to the upstream side of the shaping position (14) via a tension controller (26). The second supply means (20) supplies a second sheet material (19) from a supply device not shown in the figure at a position between the shaping position (14) and the first pressing position (15). The supply means (18, 20) is provided with a pre-heating means not shown in the Figure for preheating the sheet materials (17, 19) supplied by the supply means, respectively.
    [00057] As shown in Fig. 7, a large number of shaping recesses (21) are formed on the circumferential surface of the first shaping roller (11). A suction means not shown in the figure is connected to the bottoms of the forming recesses (21) by means of suction paths (22) formed in the first forming roller (11). Furthermore, on the first forming roller (11), a heating means (23) is provided for heating the first sheet material (17) and the second sheet material (19) which are transported together with the circumferential surface of the roll.
    [00058] The second shaping roller (12) is provided with a large number of shaping lugs (24) on the circumferential surface thereof. The shaping bosses (24) mate with the shaping recesses (21) in the shaping position (14). On the second shaping roller (12), a preheating means not shown in the Figure is provided. The pre-heating means prevents the first sheet material (17) passing through between the shaping rollers (11, 12) from being cooled due to contact with the second shaping roller (12).
    [00059] The circumferential surface of the first forming roller (11) has pressure welding projections (25) protruding outwards in a radial direction, each of which is situated in the part surrounded by adjacent forming recesses (21) of so as to be separate from the recesses for modeling (21). The positions of the pressure welding projections (25) correspond to joining parts (5) to be formed in the composite sheet material (1). Thereby, four pressure welding projections (25) are provided around each shaping recession (21) in such a way as to surround the shaping recession (21). Each press weld projection (25) is provided in the large portion surrounded by adjacent forming recesses (21), i.e. the portion farthest from any of the surrounding forming recesses (21).
    [00060] The tips of the pressure welding projections (25) press the three-dimensional sheet material (2) and the flat sheet material (4), which are superimposed on each other, against the press rollers (13, 13 ) in the pressing positions (15, 16), respectively. Thereby, the pressure welding projection (25) has only to be high enough to press the sheet materials (2, 4) and is formed to have a protrusion height as light as, for example, 1 mm or less. .
    [00061] Furthermore, in each press roller (13), a heating means not shown in the figure is provided for thermocompression bonding of the three-dimensional sheet material (2) and the flat sheet material (4) pressed by the projections to pressure welding (25).
    [00062] As shown in Fig. 6, the first sheet material (17) is supplied from a supply device not shown in the figure by means of the first supply means (18). When passed between the first shaping roller (11) and the second shaping roller (12) in the shaping position (14), the first sheet material (17) is partially pushed by the shaping protrusions (24) into the recesses. for modeling (21), and thus a large number of protruding portions (3) are formed. At this time, the tension of the first sheet material (17) is adjusted using the tension controller (26) so as to be uniform throughout the entire sheet material, and thereby the raised portions (3) are formed evenly.
    [00063] The forming recesses (21) and the forming protrusions (24) are formed, along an area with the same width as that of the first sheet material (17) on the circumferential surfaces of the first forming roller (11 ) and the second shaping roller (12) and thereby a large number of protruding portions (3) are formed along the entire width of the three-dimensional sheet material (2).
    [00064] The modeling recession (21) is formed to have a depth greater than the value obtained by subtracting the pressure welding projection height (25) from the modeling projection height (24). Therefore, even when the pressure welding projections (25) are provided on the circumferential surface of the first forming roller (11), the portions of the first sheet material (17) pushed by the forming projections (24) are certainly received in the modeling recessions (21). The peripheral edge of the end of the forming protrusion (24) is chamfered to a curved surface so that the first sheet material (17) pushed into the forming recesses (21) may not be damaged.
    [00065] Since the first sheet material (17) is heated by the heating means (23) provided on the first shaping roller (11) and the preheating means provided on the second shaping roller (12) and the first supply means (18), the portions of the first sheet material (17) pushed into the shaping recesses (21) are easily and certainly shaped into the protruding portions (3), and thus the three-dimensional sheet material ( 2) is produced.
    [00066] The three-dimensional sheet material (2) having the protruding portions (3) shaped thereon is sucked in by the suction means through the suction paths (22) and thereby maintained on the circumferential surface of the first shaping roller ( 11). Thereby, the protruding portions (3) are prevented from coming out of the forming recesses (21) and the three-dimensional sheet material (2) is smoothly guided to the first pressing position (15) and then the second pressing position (16) .
    [00067] Meanwhile, the second sheet material (19) is supplied from a supply device not shown in the figure by means of the second supply means (20), at a position between the shaping position (14) and the first pressing position (15). Here, the second sheet material (19) is superimposed, like the flat sheet material (4), on the three-dimensional sheet material (2).
    [00068] At this time, the second sheet material (19) is supplied by means of the second supply means (20) to a position as close as possible to the shaping position (14) instead of the first pressing position ( 15). That is, as shown in Fig. 6, the arrangement position of the second supply means (20) with respect to the first shaping roller (11) is defined in such a way that the central angle (a) between the arrangement position and the shaping position (14) may be smaller than the center angle (β) between the array position and the first pressing position (15). Therefore, the shaping recesses (21) are covered with the flat sheet material (4) early and thus the negative pressure in the suction paths (22) can be favorably guaranteed. The flat sheet material (4) and the three-dimensional sheet material (2) are firmly held on the circumferential surface of the first forming roller (11) and guided to the first pressing position (15).
    [00069] The second sheet material (19) is heated by the pre-heating means provided in the second supply means (20) and thus there is no risk that the three-dimensional sheet material (2) may be cooled even when the flat sheet material (4) consisting of the second sheet material (19) is superimposed on the three-dimensional sheet material (2). As a result, the three-dimensional sheet material (2) and the flat sheet material (4) are guided in a heated state to the first pressing position (15).
    [00070] When the three-dimensional sheet material (2) and the flat sheet material (4), which are superimposed on each other, reach the first pressing position (15), separate parts of the protruding portions (3) of the sheet materials (2, 4) are pressed by the tips of the pressure welding projections (25). The pressing force is received by the press roller (13), and the sheet materials (2, 4) are pressure welded. Then, the sheet materials (2, 4) are guided added to the second press position (16) and press welded similarly by the tips of press weld projections (25) to the second press position (16). Once each press roll (13) is sufficiently heated, the sheet materials (2, 4) are welded together in the pressure welded parts. Therefore, joining parts (5) are formed to obtain a composite sheet material (1) in which the sheet materials (2, 4) are joined together at the joining parts (5). After passing through the second pressing position (16), the composite sheet material (1) leaves the circumferential surface of the first forming roller (11) and is sent to the next step.
    [00071] The composite sheet material and the production method and the production apparatus for the same described above are only exemplary embodiments of the technical idea of the present invention. The material, dimension, shape, structure, arrangement, and the like of each part are not limited to those described in the embodiment, and various changes may be made within the scope of the claims of the present invention.
    [00072] For example, in the embodiment described above, each protruding portion (3) formed in the three-dimensional sheet material (2) is arranged in such a way that the center of the protruding portion (3) can be situated at each vertex of a quadrangle in a plan view. However, in the present invention, the protruding portion can be arranged in any pattern and can be arranged, for example, in such a way that the center of the protruding portion can be situated at each apex of a triangle in a plan view. In this case, the joining part is preferably formed in the center of the triangle.
    [00073] In the modality described above, a union part (5) is formed on the base (7) surrounded by the protruding portions (3).
    [00074] However, in the present invention, a plurality of joining parts (5) can be provided on the base (7) surrounded by the protruding portions (3), for example, as in Variation 1 shown in Fig. 8. In the Variation 1, eight joining parts (5) are formed around each protruding portion (3) and thus advantageously the shape of each protruding portion (3) can be well supported.
    [00075] In the embodiment and Variation 1 described above, the protruding portions (3) are arranged in such a way as to be aligned in an oblique direction with respect to the length direction of the three-dimensional sheet material (2). However, in the present invention, the protruding portions (3) can be arranged in such a way as to be aligned in the length direction and in the width direction of the three-dimensional sheet material (2), for example, as in Variation 2 shown in Fig. 9.
    [00076] In the embodiment and each Variation described above, the protruding portion and the joining portion are preferably formed within a circle in a plan view so that the recesses for shaping, the projections for pressure welding, and the like can be produced easily. However, in the present invention, the shapes of the protruding portion and the joining part are not limited to specific shapes, and can be formed into any shape such as a polygon, an ellipse, or a star.
    [00077] Furthermore, in the modality described above, it is preferred that the projections for pressure welding are provided on the circumferential surface of the first forming roll so that the joining parts formed by the projections for pressure welding can be easily formed into positions predetermined relatives with respect to the protruding portions formed by the modeling recessions. However, in the present invention, projections for pressure welding may be provided on the circumferential surface of the press roll.
    [00078] In the modality described above, only the shaping protrusions are provided on the circumferential surface of the second shaping roller. However, in the present invention, on the circumferential surface of the second forming roll, small recesses which engage the projections for pressure welding may be formed. In this case, the modeling recession is preferably formed to have a depth greater than the height of the modeling boss.
    [00079] In the embodiment described above, each of the first shaping roller and the two press rollers is provided with a heating means, and each of the second shaping roller and the two supply means is provided with a pre-setting means. -heating. However, in the present invention, in cases where the three-dimensional sheet material and the flat sheet material are welded together at the joining parts, a heating means has to be provided only on at least any one of the first roll of shaping and press rolls, and other heating means and preheating means can be omitted.
    [00080] In the embodiment described above, the three-dimensional sheet material and the flat sheet material are welded together at the joining parts. However, in the present invention, the three-dimensional sheet material and the flat sheet material can be bonded together with an adhesive or the like at the joining parts. In this case, the heating medium can be omitted.
    [00081] Needless to say, the material and width of each sheet material, the size, height and cross-sectional shape of the protruding portion, the size of the joining part, and the like are not limited to those described in the embodiment. INDUSTRIAL APPLICABILITY
    [00082] The composite sheet material of the present invention, in which a three-dimensional sheet material and a flat sheet material are firmly joined together, is excellent in ventilation and the like, soft and pleasant to the touch, and useful as in particular, a surface sheet for disposable garments such as disposable diapers and tampons. The composite sheet material of the present invention is also composite sheet materials for other purposes, such as disposable diaper outer layer sheets. SIGNALS REFERENCE LIST 1. composite sheet material 2. three-dimensional sheet material 3. protruding portions 4. flat sheet material 5. joining parts 6. flat areas 7. base 8. through holes 10. material making apparatus of composite sheet 11. first forming roller 12. second forming roller 13. pressing roller 14. forming position 15. first pressing position 16. second pressing position 17. first sheet material 18. first supply means 19 2. second sheet material 20. second supply means 21. molding recesses 22. suction path 23. heating means 24. molding projections 25. pressure welding projections 26. tension controller 27. disposable garment ( disposable diaper) 28. absorber 29. surface sheet 30. three-dimensional take-up sheet 31. filiform elastic member 32. spread sheet 33. back seat 34. outer layer sheet a. central angle between arranging position of the second supply means (20) and shaping position (14) on the first shaping roller (11) β. central angle between the arrangement position of the second supply means (20) and the first pressing position (15) on the first shaping roller (11)
    权利要求:
    Claims (4)
    [0001]
    1. Composite sheet material, in which a three-dimensional sheet material (2) consisting of a non-woven fabric having a large number of protruding portions (3) formed thereon and a flat sheet material (4) consisting of a non-woven fabric. fabric not having such protruding portions (3) are layered on top of each other and joined together by welding at joining parts (5), a base of the three-dimensional sheet material (2) not including the protruding portions (3) being flat, the base being in flat contact with the flat sheet material (4), and the three-dimensional sheet material (2) being joined to the flat sheet material (4) at the joining parts (5) separate from the protruding portions ( 3) on the flat base (7) characterized in that the area of the joining parts is 10 to 25% of that of the base (7) surrounded by the protruding portions (3), and some of the joining parts (5) are provided with a through hole (8) penetrating the composite sheet material (1), a plurality of parts and joint (5) is formed around each protruding portion (3) in such a way as to surround the protruding portion (3), and the joint portions (5) are formed further away from any of the surrounding protruding portions (3) , and the protruding portions (3) do not include anything.
    [0002]
    2. Disposable article of clothing, characterized in that it uses the composite sheet material (1) defined in claim 1.
    [0003]
    Composite sheet material production method for obtaining the composite sheet material (1) defined in claim 1, the composite sheet material production method comprising guiding a first sheet material (17) between a first roll of shaping (11) having, on the circumferential surface thereof, shaping recesses (21) and a second shaping roller (12) having, on the circumferential surface thereof, shaping protrusions (24) to form a three-dimensional sheet material (2 ) having a large number of raised portions (3) formed thereon; arranging a flat sheet material (4) consisting of a second sheet material (19) on the three-dimensional sheet material (2); and pressure welding the three-dimensional sheet material (2) and the flat sheet material (4) together in separate parts of the protruding portions (3) to generate joining parts (5), characterized in that a plurality of joining parts (5) is formed around each protruding portion (3) in such a way as to surround the protruding portion (3), and the area of the joining part (5) is from 10 to 25% of that of the base (7 ) surrounded by the protruding portions (3), and the joining parts (5) are formed by heat welding at the time of pressure welding.
    [0004]
    Apparatus for carrying out the method defined in claim 3, the apparatus comprising a first forming roller (11), a second forming roller (12), and pressing rollers (13) arranged parallel to each other in an axial direction , the first shaping roller (11) having, on the circumferential surface thereof, a large number of shaping recesses (21) and having a shaping position (14) and pressing positions (15, 16) defined on the circumferential surface of the roller in this order from the upstream side of the direction of rotation, the second shaping roller (12) having, on the circumferential surface thereof, a large number of shaping protrusions (24), and facing the first shaping roller (11) in the shaping position (14), where the shaping lugs (24) mate with the shaping recesses (21), or the first shaping roll (11) or the press rolls (13) having, in the circumferential surface of the same, projections to the sun pressure die (25) protruding outwards in a radial direction, the first shaping roller (11) and the pressing rollers (13) facing each other in the pressing positions (15, 16) so that the tips of the pressure welding projections (25) press the three-dimensional sheet material (2) and the flat sheet material (4) superimposed on each other, characterized in that the pressure welding projections (25) are provided in the circumferential surface of the first forming roller (11) at positions remote from the forming recesses, and a plurality of pressure welding projections (25) is provided around each forming recess (21) in such a way as to surround the forming recess. forming (21), and at least either the first forming roller (11) or the pressing roller (13) comprises heating means (23) for heating the three-dimensional sheet material (2) and the flat sheet material ( 4) pressured by projections to press molding (25), and a plurality of press rollers (13) are provided around the first forming roller (11).
    类似技术:
    公开号 | 公开日 | 专利标题
    BR112015010064B1|2021-06-01|COMPOSITE SHEET MATERIAL, DISPOSABLE CLOTHING ARTICLE, APPARATUS AND METHOD OF PRODUCTION OF COMPOSITE SHEET MATERIAL
    TWI398354B|2013-06-11|A laminated body of a sheet-like member
    JP6044413B2|2016-12-14|Absorbent article topsheet and absorbent article using the same
    TW201029634A|2010-08-16|Surface sheet for absorbent article
    TWI581778B|2017-05-11|With the top of the absorption of functional items
    JP2014150917A|2014-08-25|Disposable diaper
    CN105829072A|2016-08-03|Bonding apparatus and method
    JP2005319730A|2005-11-17|Expandable, three-dimensionally shaped sheet
    JP2017093732A|2017-06-01|Absorbent article
    JP2007117111A|2007-05-17|Absorbent article
    TWI652052B|2019-03-01|Absorbent article
    CN105246442A|2016-01-13|Underpants-type disposable nappy
    CN103781451B|2015-07-15|Disposable diaper
    JP6399827B2|2018-10-03|Absorbent articles
    JP6342693B2|2018-06-13|Absorbent article manufacturing method and absorbent article
    CN205459369U|2016-08-17|Absorbent product
    JP6265110B2|2018-01-24|Absorbent article and manufacturing method thereof
    JP6317143B2|2018-04-25|Absorbent articles
    TWI727998B|2021-05-21|Absorbent articles
    JP2019122504A|2019-07-25|Sweat-absorbing pad for armpit
    JP2021094059A|2021-06-24|Method for manufacturing perforated multilayer sheet
    ES2846198T3|2021-07-28|Multilayer material comprising at least one layer of nonwoven textile material
    CN208677729U|2019-04-02|Embossing device and non-woven fabrics with embossing
    JP6560060B2|2019-08-14|Method for manufacturing uneven sheet
    JP6382460B2|2018-08-29|Absorbent article manufacturing method
    同族专利:
    公开号 | 公开日
    JP5980949B2|2016-08-31|
    JPWO2014084066A1|2017-01-05|
    CN104822353A|2015-08-05|
    BR112015010064A2|2017-07-11|
    WO2014084066A1|2014-06-05|
    US20150290050A1|2015-10-15|
    US10632028B2|2020-04-28|
    CN104822353B|2018-04-13|
    MY173787A|2020-02-21|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US3370520A|1966-04-27|1968-02-27|Hans A. Mauch|Ventilating device|
    US3468311A|1967-06-07|1969-09-23|John P Gallagher|Absorbent pad|
    US3837991A|1971-05-03|1974-09-24|Kimberly Clark Co|Plastic cushioning reinforced material|
    US3908052A|1974-03-06|1975-09-23|Minnesota Mining & Mfg|Liquid crystal display device and method of making|
    US4028750A|1974-12-05|1977-06-14|Barracudaverken Aktiebolag|Cover for water-filled outdoor swimming pools|
    US4055180A|1976-04-23|1977-10-25|Colgate-Palmolive Company|Absorbent article with retained hydrocolloid material|
    US4638907A|1984-11-28|1987-01-27|The Procter & Gamble Company|Laminated laundry product|
    US5188625A|1985-09-09|1993-02-23|Kimberly-Clark Corporation|Sanitary napkin having a cover formed from a nonwoven web|
    US4748789A|1986-07-21|1988-06-07|Hedley Gilbert P|Access floor panel|
    US5817394A|1993-11-08|1998-10-06|Kimberly-Clark Corporation|Fibrous laminated web and method and apparatus for making the same and absorbent articles incorporating the same|
    SE508041C2|1994-12-30|1998-08-17|Moelnlycke Ab|Absorbent articles|
    JPH1077566A|1996-07-11|1998-03-24|Uni Charm Corp|Nonwoven fabric and its production|
    US7112193B2|1996-09-30|2006-09-26|Uni-Charm Corporation|Disposable diaper backsheet comprising composite having an elastic layer, inelastic layer and bonding pattern of obliquely intersecting lines|
    AU6464698A|1997-03-21|1998-10-20|Kimberly-Clark Worldwide, Inc.|Dual-zoned absorbent webs|
    US6060149A|1997-09-12|2000-05-09|The Procter & Gamble Company|Multiple layer wiping article|
    JP2002532193A|1998-12-18|2002-10-02|キンバリークラークワールドワイドインコーポレイテッド|Absorbent product with wrapable side elastic panel|
    JP3875008B2|2000-09-01|2007-01-31|ユニ・チャーム株式会社|Method for producing absorbent article having fiber layer on surface|
    EP1190690B9|2000-09-22|2012-08-01|Kao Corporation|Topsheet for absorbent article|
    EP1283028B1|2001-08-10|2008-03-05|Kao Corporation|Topsheet for absorbent article|
    US20030181882A1|2002-03-22|2003-09-25|Yasuo Toyoshima|Absorbent article|
    JP4090420B2|2002-11-13|2008-05-28|花王株式会社|Top sheet for absorbent articles|
    US7468114B2|2002-11-13|2008-12-23|Kao Corporation|Composite sheet and process and apparatus for producing the same|
    EP1575769B1|2002-12-13|2012-03-28|Ole-Bendt Rasmussen|Laminates of films having improved resistance to bending in all directions and methods and apparatus for their manufacture|
    US7582348B2|2003-09-08|2009-09-01|Kao Corporation|Composite extensible member and method of manufacturing the same|
    JP4532941B2|2004-03-12|2010-08-25|ユニ・チャーム株式会社|Disposable wearing articles|
    DE602004026566D1|2004-07-28|2010-05-27|Procter & Gamble|Indirect pressure from AMG|
    US7323072B2|2005-04-27|2008-01-29|Kimberly-Clark Worldwide, Inc.|Multi-roll bonding and aperturing|
    US7744981B2|2006-03-06|2010-06-29|The Procter & Gamble Company|Embossed multi-ply fibrous structure product|
    JP5043552B2|2007-08-06|2012-10-10|花王株式会社|Top sheet for absorbent article and absorbent article|
    JP5329785B2|2007-08-28|2013-10-30|花王株式会社|Absorbent sheet|
    KR101515518B1|2007-08-28|2015-04-27|가오 가부시키가이샤|Shaped sheet and absorbent article utilizing the same|
    RU2445410C2|2007-08-28|2012-03-20|Као Корпорейшн|Profiled sheet and absorbing article incorporating said sheet|
    JP4944743B2|2007-11-26|2012-06-06|花王株式会社|Composite sheet|
    JP5329806B2|2007-12-28|2013-10-30|花王株式会社|Absorbent article surface sheet|
    EP2273960A1|2008-02-19|2011-01-19|Sca Hygiene Products AB|Material web for use in an absorbent article|
    US20100233503A1|2009-03-13|2010-09-16|Zachman Joseph M|Panel for a storage container|
    WO2010119535A1|2009-04-15|2010-10-21|大王製紙株式会社|Emboss roller and method for producing surface sheet using emboss roller and absorbent article employing surface sheet|
    JP2012111076A|2010-11-22|2012-06-14|Kao Corp|Laminated sheet|
    JP5986506B2|2011-02-10|2016-09-06|株式会社瑞光|Granular arrangement method and apparatus|WO2015134375A1|2014-03-06|2015-09-11|The Procter & Gamble Company|Multi-component topsheets|
    WO2015134359A1|2014-03-06|2015-09-11|The Procter & Gamble Company|Three-dimensional substrates|
    BR112017004945A2|2014-09-12|2017-12-05|Procter & Gamble|non-woven materials having isolated three-dimensional deformations forming bulges of varying width and wide base openings|
    US10064766B2|2014-09-12|2018-09-04|The Procter & Gamble Company|Nonwoven material having discrete three-dimensional deformations that are configured to collapse in a controlled manner|
    CA2958653A1|2014-09-12|2016-03-17|The Procter & Gamble Company|Method of making nonwoven material having discrete three-dimensional deformations with wide base openings|
    WO2016040124A1|2014-09-12|2016-03-17|The Procter & Gamble Company|Absorbent articles with indicia and/or color|
    EP3191056B1|2014-09-12|2018-08-22|The Procter and Gamble Company|Nonwoven material having discrete three-dimensional deformations with wide base openings|
    US20160075123A1|2014-09-12|2016-03-17|The Procter & Gamble Company|Method Of Making Nonwoven Material Having Discrete Three-Dimensional Deformations With Wide Base Openings That are Base Bonded to Additional Layer|
    CA2958620A1|2014-09-12|2016-03-17|The Procter & Gamble Company|Nonwoven material having discrete three-dimensional deformations that are configured to collapse in a controlled manner|
    EP3209824B1|2014-09-12|2018-11-28|The Procter and Gamble Company|Nonwoven material having discrete three-dimensional deformations with wide base openings that are base bonded to additional layer|
    CN107073830B|2014-10-31|2018-06-05|尤妮佳股份有限公司|The manufacturing method of composite sheet and the manufacture device of composite sheet|
    JP5984156B2|2014-11-19|2016-09-06|大王製紙株式会社|Absorbent article manufacturing method and absorbent article|
    US10611118B2|2015-01-09|2020-04-07|President And Fellows Of Harvard College|Negative poisson's ratio waffle structures|
    EP3242794B1|2015-01-09|2020-12-30|President and Fellows of Harvard College|Zero-porosity npr structure and tuning of npr structure for particular localities|
    CN107735061B|2015-06-08|2021-04-30|株式会社瑞光|Composite sheet and device and method for producing and manufacturing composite sheet|
    WO2017034796A1|2015-08-26|2017-03-02|The Procter & Gamble Company|Absorbent articles having three-dimensional substrates and indicia|
    JP6198076B2|2015-09-25|2017-09-20|大王製紙株式会社|Absorbent articles|
    JP6647021B2|2015-11-20|2020-02-14|花王株式会社|Absorbent articles|
    JP6234492B2|2016-02-10|2017-11-22|大王製紙株式会社|Pad type disposable diaper|
    EP3216434A1|2016-03-08|2017-09-13|The Procter and Gamble Company|Absorbent article comprising a topsheet/acquisition web laminate|
    CN108738307B|2016-03-11|2021-08-10|宝洁公司|Nonwoven material with discrete three-dimensional deformations having improved tab size after compression|
    US20170259550A1|2016-03-11|2017-09-14|The Procter & Gamble Company|Method Of Making Nonwoven Material Having Discrete Three-Dimensional Deformations With Holes In Selected Portions Of The Protrusions|
    CN105748209A|2016-03-16|2016-07-13|厦门延江新材料股份有限公司|Perforated non-woven fabric and production method thereof|
    WO2017212969A1|2016-06-08|2017-12-14|株式会社瑞光|Composite sheet manufacturing device and manufacturing method|
    WO2018000410A1|2016-07-01|2018-01-04|The Procter & Gamble Company|Absorbent articles with improved topsheet dryness|
    WO2017061165A1|2016-07-29|2017-04-13|ユニ・チャーム株式会社|Method for producing absorbent article|
    JP2020507390A|2017-02-13|2020-03-12|ザ プロクター アンド ギャンブル カンパニーＴｈｅ Ｐｒｏｃｔｅｒ ＆ Ｇａｍｂｌｅ Ｃｏｍｐａｎｙ|Laminate for absorbent article and method for producing the same|
    JP2020523076A|2017-06-07|2020-08-06|ケーシーアイ ライセンシング インコーポレイテッド|Multi-layer wound filler for long-term wear|
    US11207217B2|2017-06-07|2021-12-28|Kci Licensing, Inc.|Methods for manufacturing and assembling dual material tissue interface for negative-pressure therapy|
    CN110944607A|2017-06-07|2020-03-31|凯希特许有限公司|Method of manufacturing and assembling a bi-material tissue interface for negative pressure therapy|
    CN111201123B|2017-10-06|2021-09-07|株式会社瑞光|Composite sheet manufacturing apparatus and manufacturing method|
    US10918532B2|2017-12-19|2021-02-16|The Procter & Gamble Company|Methods of making elastic belts for absorbent articles|
    US10919580B1|2018-01-26|2021-02-16|Terry D. Pennington|Vehicle frame and cargo bay liner|
    CN109106510A|2018-10-12|2019-01-01|江西省安秀实业发展有限公司|A kind of red buttock proof camellia oil paper diaper|
    BR112021006334A2|2018-10-24|2021-07-06|Zuiko Corp|molded sheet manufacturing method|
    CN109771144B|2019-01-10|2021-06-11|贵州卡布婴童用品有限责任公司|Multi-convex-point type water permeable layer and manufacturing method thereof|
    法律状态:
    2018-11-21| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2019-11-12| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2021-05-04| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2021-06-01| B16A| Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 15/11/2013, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    JP2012262705|2012-11-30|
    JP2012-262705|2012-11-30|
    PCT/JP2013/080897|WO2014084066A1|2012-11-30|2013-11-15|Composite sheet material and disposable wearing article, and method and device for manufacturing composite sheet material|
    [返回顶部]