• 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:
    Respiratory protection masks (10) made of multi-layer fabric (52) are proposed, the fabric layers being connected to one another at least in places. During the weaving process, tubular and/or pocket-shaped structures (22, 24) are formed to accommodate components (20). The fabric layers have at least predominantly fusible fibers, preferably polyester fibers. The tubular structures (22) on two opposite edges of the mask are used to pull through fastening straps or cords (20).
    公开号:CH717609A2
    申请号:CH70025/21
    申请日:2021-07-07
    公开日:2022-01-14
    发明作者:Engesser Bernhard；Reimann Robert
    申请人:Textilma Ag；
    IPC主号:
    专利说明:

    technical field
    The invention relates to a breathing mask made of multi-layer fabric with integrated functional structures, according to the preamble of claim 1, as well as manufacturing methods.
    State of the art
    [0002] Respiratory masks, for example as surgical masks or protective masks against infections, have been known for a long time. For example, a surgical face mask is known from the published application DE 1172800 or GB 892262 A, which is made of needle-woven fiber material consisting of a mixture of thermoplastic fibers and cellulose fibers, enclosed between an upper and lower sheet of a relatively large-meshed fiber material (fabric), containing a thermoplastic binder. The edges of the covering pulp (fabric) extend beyond the needle-punched pulp and are wrapped onto the tie cords. The mask is welded by heat and pressure along the edges. In a second embodiment, the cover sheets are connected to one another by forming loops through which the drawstrings pass. By pulling together the drawstrings and thus the side edges, the mask is adapted to the outline of the face. A strip of pliable metal is placed between the top fabric and the needle-punched fabric. DE 1172800 does not disclose how the metal strip is secured against slipping. Possibly this is ensured by the thermal bond between the top covering fabric and the needle-punched fabric. EP 0183059 A1 proposes sewing a stack of several filter layers cut to size together at the edges with a nylon thread. Then a strip of rubber foam should be folded around the edge seam and pressed on. Finally, the entire bandage is fixed again with another embroidery thread. Due to the rubber foam, the edge of the mask should be soft and therefore comfortable to wear and tight. In EP 0183059 A1, the binding cords are attached to the mask by metal clips. A metal bracket is attached to the mask over the nose portion, but how the attachment is to be formed is not disclosed. CN 104799450 A discloses a breathing mask in which several filter layers are glued together. A multi-layer breathing mask is known from US Pat. No. 0,060,705,78 A, consisting of 3 fabric layers that are connected to one another at the fabric edges, without disclosing the form in which the connection is to be formed. To attach the mask over the nose and mouth, an elastic loop is attached to the left and right vertical edges, although it is not disclosed how the attachment is to be formed. US Pat. No. 0,607,0578 A also proposes attaching the elastic loops to the left and right vertical edges of the mask in the stretched state, so that they contract in the relaxed state so that the mask can better adapt to the contours of the face. A flexible, deformable metal strip is inserted and fastened between two fabric layers in the region of the upper fabric edge and, in a second embodiment, also in the region of the lower fabric edge, although it is not disclosed how the fastening is to be formed. WO 2016115292 A1 discloses a multi-layer filter fabric for breathing masks, in which the fabric layers are connected by means of ultrasound or hot glue. A breathing mask with a nose clip is known from WO 9611594 A1, in which the nose clip is attached to the mask by means of an adhesive. The adhesive can be a pressure sensitive adhesive or a hot melt adhesive. The nose clip can be pre-coated with hot melt adhesive and then pressed onto the mask, or a pressure sensitive adhesive or liquid hot melt adhesive can be added just prior to attaching the nose clip to the mask. Similarly, a breathing mask with a nose clip is known from GB2329128 A, the nose clip again being attached to the mask by means of an adhesive, for example a pressure-sensitive adhesive or a liquid hot-melt adhesive. Alternatively, GB2329128 A suggests that the nose bridge should be enclosed within the mask construction or by means of a fabric or foam attached to the mask. Fastening is provided mechanically or with glue. WO 2007024865 A1 provides a preformed nose clip made of a polymer material, which is attached to the breathing mask by means of ultrasonic welding. Finally, EP 3603429 A1 discloses a breathing mask with a nose clip made of plastic material, with the clip being connected to the mask material by means of heat or ultrasound.
    What these breathing masks have in common is that considerable additional assembly work is required, especially if the masks are to have structural functions, such as nose clip, cords for attachment to the mask wearer, etc.
    Presentation of the invention
    The object of the invention is to propose a textile, preferably woven breathing mask in which a maximum of functional structures can already be integrated in the weaving process and thus the manufacturing effort after manufacture, i.e. weaving, can be kept to a minimum.
    The object of the invention is achieved by a breathing mask according to claim 1 in that the fabric of the breathing mask consists of several layers of fabric which are already connected to one another in places during weaving. These connections and the omission of the connections in certain areas result in pocket or tube-like structures that can accommodate functional elements. The woven yarn materials are essentially, preferably fusible threads such as polyester. However, other fibers, in particular natural fibers, preferably cotton fibers, can also be woven in for improved wearing comfort. The different layers of fabric can take on different functions. The inner and outer layer or also several outer and/or inner layers preferably assume a support function, while a middle layer lying in between or also several such layers assume the filter function. This is advantageously improved in that the outer and/or inner layer is woven more coarsely, possibly also using thicker fibers, while the middle layer or layers is woven more densely for an improved filter function, preferably with much finer fibers. This advantageously relates to the property of the weft threads, while the warp threads are advantageously of the same type to ensure high weaving flexibility.
    The fabric weave is advantageously designed in such a way that a tubular passage is created on the left and right edge of the mask, through which a fastening strap or fastening cord can be pulled. Advantageously, in the area of the upper edge of the mask, a pocket is formed that runs parallel to the upper edge of the mask, into which a so-called nose clip can be inserted. To insert the nose clip, the fabric binding at one end of the pocket and on the inside, i.e. the side of the mask facing the mask wearer, is interrupted over an area of preferably approx. 5x5mm in such a way that the warp and weft threads only cross, but do not bind. The mask fabrics are advantageously woven on a wide weaving machine, with the tubular openings for the fastening straps or cords preferably running in the weft direction and the pockets for the nose clip in the warp direction. The webs of fabric produced in this way are advantageously cut into individual masking strips on the weaving machine by means of hot or ultrasonic cutting. The upper and lower edge of the mask is melted during hot or ultrasonic cutting, and the layers of fabric fuse together to form a reliably closed edge. In a subsequent process, the mask strips are then cut into individual breathing masks 10 by means of hot or ultrasonic cutting. This cutting process preferably takes place on an automatic cutting machine, on which the cutting position is scanned using suitable sensors. In order to ensure that when the fabric webs are hot-cut, the tubular structure does not fuse at the point of the cut and thus the insertion of the functional element, e.g. the fastening tape or the fastening cord, is not made more difficult, in a preferred embodiment of the invention individual not fusible threads, eg viscose threads, shot. Since there are only a few threads that cannot be melted, these are also severed during the hot and ultrasonic cut. They burn through at the interface, but this is hardly visible due to the small number of threads. On the other hand, the melt mass of the remaining meltable threads is so small that the tube can be opened easily. The fastening straps or cords are preferably elastic. When fastened in loops behind the wearer's ears, they are under tension. As a result, the tubular structures on the left and right edge of the mask contract and thus adapt to the contours of the face.
    The above-mentioned elements to be used according to the invention, as well as those claimed and described in the following exemplary embodiments, are not subject to any special exceptional conditions in terms of their size, shape, use of materials and their technical design, so that the selection criteria known in the respective field of application can be used without restriction. It should be clear that the function can be on the one hand the protection of the environment from, for example, infectious breath of the wearer, but also the protection of the wearer from harmful breathing air, for example from infectious aerosols, harmful chemical or mechanical components of the air, such as asbestos, or other burdens.
    Brief description of the drawings
    Further details, advantages and features of the subject matter of the present invention emerge from the following description of the accompanying drawings, in which - by way of example - inventive breathing masks and methods for their production are explained. In the drawings: Figure 1 shows a breathing mask with an elastic band on each side and a pocket for a nose clip according to a preferred embodiment of the invention, Figure 2a shows the weaving machine (schematic) for manufacturing the breathing mask according to Figure 1 from above, Figure 2b shows the weaving machine according to FIG. 3 in perspective, FIG. 3 the finished breathing mask on the head of the mask wearer and FIG. 4 a view of the weaving situation in the area of the pocket opening.
    Ways to carry out the invention
    In the figure 1, a breathing mask 10 made of several layers of fabric 52 is shown. The fabric layers are already connected to one another in places during weaving, in the present exemplary embodiment in particular in the area of the sides of the breathing mask 10. These connections and the omission of the connections in certain areas result in pocket- or tubular structures 22 and 24, the functional elements in the present exemplary embodiment can accommodate elastic straps 20 or carrying cords and a nose clip. The woven yarn materials are essentially fusible threads, polyester threads in the exemplary embodiment. However, other fibers, in particular natural fibers, preferably cotton fibers, can also be woven in for improved wearing comfort. The different layers of fabric take on different functions. The inner and outer layer or—alternatively—also several outer and/or inner layers assume a support function, while a middle layer lying in between or several such layers assume the filter function. In the present exemplary embodiment, this is achieved by the outer and/or inner layer being woven more coarsely, in the exemplary embodiment using thicker weft threads, while the middle layer or layers is woven more densely for an improved filter function, in the exemplary embodiment using finer weft threads. The warp threads are provided in the same way to ensure high weaving flexibility.
    The fabric weave is designed in the present embodiment such that a tubular passage 22 is created on the left and right edge of the mask, through which one each - in the embodiment elastic fastening strap 20 or a fastening cord can be pulled. FIG. 1 shows that in the region of the upper edge of the mask, a pocket 24 is formed which runs parallel to the upper edge of the mask and into which a so-called nose clip can be inserted. In order to insert the nose piece--as shown in FIG. 4--the fabric weave is interrupted at one end of the pocket and on the inside, ie the side of the mask facing the breathing mask wearer 60, over an area of--in the exemplary embodiment--approximately 5×5 mm in such a way that warp and weft threads only cross, but do not bind. The multi-layer mask fabric 52 according to this exemplary embodiment is woven on a wide weaving machine 30, with the tubular openings 22 for the fastening straps 20 or cords running in the weft direction and the pockets 24 for the nose clip running in the warp direction.
    The production is shown in Figures 2a and b. The webs of fabric produced in this way are produced on the weaving machine 30 in the present exemplary embodiment. The weaving machine has a warp beam 32, a shedding device 34, a warp 36 supplied by the warp beam, a weft insertion device 40 for weft insertion into the shed 38 and a reed 44 for beating up the weft thread 41, a fabric beam 42 for receiving the finished woven material, i.e. the material at hand Embodiment already longitudinally cut masking tapes 50 on. The woven material is cut into individual masking strips 50 by means of hot or ultrasonic cutting by cutting blades 48 arranged on a cutting bar 46 . The upper and lower edge of the mask is melted during hot or ultrasonic cutting, and the layers of fabric fuse together to form a reliably closed edge. In a subsequent process, the mask strips are again cut into individual breathing masks by means of hot or ultrasonic cutting (not shown in FIGS. 2a and b). This cutting process takes place on an automatic cutting machine, on which the cutting position is scanned using suitable sensors. In order to ensure that when the fabric webs are hot-cut, the tubular structure does not fuse at the point of the cut and that the insertion of the functional element, e.g. the fastening tape 22 or the fastening cord, is not made more difficult, in this area in the present embodiment of the invention individual non-fusible threads, eg viscose threads, shot in. Since there are only a few threads that cannot be melted, these are also severed during the hot and ultrasonic cut. They burn through at the interface, but this is hardly visible due to the small number of threads. On the other hand, the melt mass of the remaining meltable threads is so small that the tube can be opened easily. The fastening straps or cords are elastic. When fastened in loops behind the wearer's ears, they are placed under tension as shown in Figure 3. As a result, the tubular structures on the left and right edges of the mask contract and thus adapt to the facial contours of the breathing mask wearer 60.
    reference list
    10 breathing mask 20 elastic band for putting on the breathing mask 22 hose structure due to special weave 24 pocket structure due to special weave 25 nose clip (schematic) 26 areas in which the fabric layers are connected to one another 28 areas in which the fabric layers are not connected to one another 30 weaving machine 32 warp beam 34 shedding device 36 warp 38 shed 40 weft insertion device 41 weft threads 42 fabric beam 44 reed 46 cutting beam 48 cutting knife 50 masking tapes 52 multi-layer fabric 60 breathing mask carrier
    权利要求:
    Claims (10)
    [1]
    1. Breathing mask comprising a multi-layer fabric (52), the fabric layers being connected to one another at least in places, characterized in that tubular and/or pocket-like structures (22, 24) are formed during the weaving process to accommodate components (20).
    [2]
    2. Breathing mask according to claim 1, characterized in that the fabric layers have at least predominantly fusible fibers, preferably polyester fibers.
    [3]
    3. Breathing mask according to claim 1 or 2 with tubular structures (22) on two opposite mask edges for pulling through fastening straps or cords (20).
    [4]
    4. Breathing mask according to claim 3, characterized by fastening straps or cords (20) which are arranged in such a way that they are placed under tension when the breathing mask (10) is worn and the tubular structure (22) on the two lateral edges of the mask contracts and thus adapts to the face shape of the breathing mask wearer (60).
    [5]
    5. Breathing mask according to one of claims 1 to 4, characterized in that the breathing mask has weft threads made of non-fusible material in the tubular structures (22) at said mask edges.
    [6]
    6. Respiratory mask according to one of claims 1 to 5 with at least one pocket-shaped structure (24) in the area of the upper edge of the mask, preferably parallel to the upper edge of the mask for receiving a nose clip, the nose clip preferably being made of metal and/or plastic.
    [7]
    7. Breathing mask according to claim 6 with an insertion opening for the nose clip at one end of the pocket-shaped structure (24), preferably on the side of the mask facing the mask wearer by forming an area of preferably 5x5mm, in which the warp and weft threads only cross, however not bind.
    [8]
    8. Breathing mask according to one of claims 1 to 7, characterized in that preferably in the inner side facing the breathing mask carrier (60) some of the weft threads are threads made of natural fibers.
    [9]
    9. A method for producing breathing masks (10) according to any one of claims 1 to 8, characterized in that the breathing masks (10) are woven on a weaving machine (30) next to and behind one another and are woven on the weaving machine (30) and/or in be cut into individual masking strips (50) in a subsequent process by means of hot or ultrasonic cutting (46, 48).
    [10]
    10. The method according to claim 9, characterized in that the mask strips (50) are cut into individual breathing masks (10) in a subsequent, preferably automated process by means of hot or ultrasonic cutting, the cutting positions being scanned by means of a suitable sensor.
    类似技术:
    公开号 | 公开日 | 专利标题
    DE69919595T2|2005-09-15|FACIAL MASKS WITH THERE BY THERMAL AND PRESSURE FASTENED ELASTIC AND POLYOLEFIN THERMOPLASTIC TAPE
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    DE19847331A1|2000-04-20|Attachment of knitted seat covers to seat uses hook and loop fastener knitted integrally with seat cover
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    EP0355444B1|1992-12-16|Face mask
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    DE102006028210B3|2008-01-24|Woven fixing band for upholstery part of vehicle seat has recesses and hose working into fixing band by weaving process
    EP1370167B1|2006-10-04|Tape combination for positioning slats on a slatted frame
    DE102015002393B3|2016-04-21|Respirator
    DE4140609A1|1993-06-17|METHOD FOR PRODUCING FABRIC PARTS
    DE102020114538A1|2021-10-14|Respirator
    同族专利:
    公开号 | 公开日
    DE202020104018U1|2020-09-10|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE202020104018.9U|DE202020104018U1|2020-07-10|2020-07-10|Breathing mask made of multi-layer fabric with integrated functional structures|
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