• 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:
    The present invention relates to a lid intended to close a container in the form of a bucket, said lid (3) comprising a middle part (4) of a rigid material, an edge part (5) of a rigid material shaped to fitting onto the edge of the upper end of said container, said middle part and edge part being connected by a part (6) which can be deployed in a flexible material in which the ratio between the maximum height of the deployable part and the diameter of the cover goes from 1/10 to 1/4. It also relates to a method of manufacturing this cover and to an assembly comprising a container and a cover according to the invention capable of closing said container.
    公开号:BE1026274B1
    申请号:E201900055
    申请日:2019-06-25
    公开日:2019-12-05
    发明作者:Jacky Lechevestrier
    申请人:Etablissements Lechevestrier；
    IPC主号:
    专利说明:

    DEFORMABLE COVER, MANUFACTURING METHOD, AND ASSEMBLY COMPRISING A CONTAINER AND A DEFORMABLE COVER
    The present invention relates to the field of lids capable of closing any type of container and making it possible to produce a stable stack of these containers, the invention also relates to a method of manufacturing said lids.
    In the food sector, the current trend to limit the use of disposable containers contributes to an upsurge in the marketing of containers dedicated to the storage of food products, cleaning products ... These storage containers nevertheless have the disadvantage of leading to a noticeable clutter of spaces, furniture dedicated to the storage of these products.
    In the food industry, this problem of container storage also exists. Indeed, many tasks require the use of buckets such as for example licking buckets containing mineral materials used to supplement animal feed. The storage of these stacked buckets also leads to congestion of the storage areas. In addition, to ensure stability of the stacks of buckets, food professionals often use infill boards. These boards generate additional costs and increase the size of the storage areas without always leading to satisfactory stability of the stacks of buckets.
    Containers with lids have already been proposed which make it possible to improve the stability of the stacking of said containers. In particular the patent application CN 2434239 describes a pot whose body is tapered down and whose periphery of the upper part of the cover forms, by folding, edges. Said edges of the cover are folded back to form a resilient blade corresponding to a laterally compressible structure.
    There remains a need for containers which can be stacked by forming stable stacks without the need to have recourse to elements ensuring the maintenance of said stacks such as for example intermediate boards.
    In addition, saving space when storing containers is universally sought by manufacturers, intermediate sellers and users alike.
    The present invention aims to meet these needs.
    Thus, the authors of the present invention have implemented a cover intended to close a container, said cover comprising a middle part made of a rigid material,
    BE2019 / 0055 an edge part made of a rigid material shaped to fit on the edge of the upper end of said container, said middle part and edge part being connected by a deployable part, preferably made of a flexible material. More particularly, the invention relates to a lid intended to come to close a container in the form of a bucket, said lid comprising a middle part made of a rigid material, an edge part made of a rigid material shaped to fit on the edge. from the upper end of said container, said middle part and edge part being connected by a deployable part made of a flexible material, the middle part of the cover being a disc and the edge part being a crown, said cover being such that the ratio between the maximum height of the deployable part and the diameter of the cover ranges from 1/10 to 1/4.
    According to a second object, the present invention relates to an assembly comprising a container, preferably a bucket, and a cover capable of closing said container according to the invention.
    According to a third object, the present invention also relates to a method of manufacturing said cover according to the invention.
    Other objects, aspects, advantages, properties of the present invention are presented in the description which follows.
    In this text, the terms “stack” and “stacking” are used interchangeably.
    As already mentioned, the present invention relates to a cover intended to come to close a container, said cover comprising a middle part made of a rigid material, an edge part made of a rigid material shaped to come to fit on the edge of the upper end. of said container, said middle part and edge part being connected by a deployable part preferably made of a flexible material.
    Said cover being arranged so that said middle part is movable from a rest position to a deployed position in which the middle part is spaced from the edge part.
    According to the invention, the middle part is able to move from an initial position, at rest, to a deployed position under the effect of an external force applied to the upper face of said middle part, substantially according to a movement. of translation parallel to the main axis of the cover passing through the center of the middle part and extending
    BE2019 / 0055 perpendicular to the main faces of the middle part. Of course, said external force must be sufficient to allow the displacement of the middle part.
    When stacking a second container, preferably at least partially filled, on a first container equipped with a cover according to the invention, the middle part of said cover moves to its deployed position under the effect of the weight of the second container, in a translational movement towards the bottom of the first container.
    Preferably, the deployable wall makes it possible to move the middle wall between its two positions, in a reversible manner.
    According to one embodiment, the deployable wall resiliently biases the middle wall towards its rest position. In the absence of external forces applied to the middle wall, the middle wall automatically returns to the rest position.
    The cover according to the invention advantageously makes it possible to form stacks of stable containers without it being necessary to have recourse to additional elements ensuring the maintenance of the stacks, such as for example intermediate boards. Indeed, in the deployed position, the middle part of the cover, the deployable part and the internal wall of the edge part form a space intended to receive the bottom of a second container so as to allow a particularly stable positioning of said second container. The stacks of containers thus formed, in particular buckets, can be stored in passage or handling areas. Under normal conditions of use of said passage or handling zones, the risks of falling buckets are low or even non-existent, in any event they are very reduced compared to the risks generated by stacking conventional buckets.
    Another advantage of the present invention relates to the gain in space. Indeed, the cover according to the invention makes it possible to significantly reduce the height of the stacks of buckets. The use of lids according to the present invention allows a reduction in the total height of a stack of buckets of up to a third compared to the total height of a stack of buckets with conventional lids. The use of covers according to the present invention therefore allows a significant saving of space.
    The middle part corresponds substantially to the part which covers the contents of the container.
    BE2019 / 0055
    The middle part is made of rigid material, preferably a thermoplastic polymer. The middle part should be strong enough to support a stack of full buckets. Generally the material in which the middle part is made is chosen from ethylene polymers and propylene polymers, such as polyethylene (PE) and polypropylene (PP), preferably polypropylene (PP).
    The border part is made of rigid material. The rim portion of the lid should be strong enough to remain attached to the edge of the upper end of the container when it is in position to support a stack of full buckets.
    Advantageously, the rigid material in which the border part is formed is the same as the rigid material in which the middle part is formed, preferably the middle and border parts are formed with the same material. Generally the material in which the border part is made is chosen from ethylene polymers and propylene polymers, such as polyethylene (PE) and polypropylene (PP), preferably polypropylene (PP).
    The middle part and peripheral part of the cover are made of harder material (s) than the deployable part.
    The deployable part is made of flexible material. The deployable part must be flexible enough to be folded and unfolded several times without damage. The deployable part must also be flexible enough to be able to support a stack of containers, in particular a stack of buckets, full for a period of a few months or even up to a year.
    The flexible material in which the deployed part is formed is advantageously a thermoplastic elastomer (TPE).
    According to a preferred variant of the invention, the middle part of the cover is a disc and the edge part is a crown, said cover then being intended to close a container in the form of a bucket.
    When the container is a bucket of substantially circular cross section, the middle part is a disc with a diameter less than the diameter of the upper (free) end of the body of the bucket.
    According to another preferred variant of the invention, the edge portion of the cover has a groove through which said cover is adapted to come to fit on the edge of the upper end of said container, said groove being of substantially shaped cross section.
    BE2019 / 0055 de U comprising a vertical internal annular wall connected by a horizontal central wall to an external annular wall or rim, preferably said edge portion is formed of a crown having an annular groove.
    Said external and internal walls, preferably annular, connected by the horizontal central wall form a groove directed downwards, that is to say towards the bottom of the container. Said groove is thus shaped to come to adapt, for example to be clipped, on the edge of the upper end, free of the container.
    Advantageously, the vertical internal annular wall has ribs extending radially outward towards the external annular rim. These ribs are arranged at regular angular spaces, the edge of the upper end of the container being positioned between the internal face of the external annular rim and the ribs.
    The lid thus formed is overflowing and makes it possible to pinch the upper part of the container and to ensure, if necessary, a tight closure.
    Advantageously, one or more, preferably 2, 3 or 4, tongues are arranged on the external rim. They are advantageously arranged in the extension of the outer rim, that is to say downwards. This / these tab (s) make it easier to grip and detach the cover.
    According to another preferred variant of the invention, the deployable part of the cover according to the invention comprises a bellows formed by at least two wall sections connected by a fold line.
    Advantageously, the deployable part is formed of a bellows comprising at least three wall sections, preferably at least four wall sections, better still at least five wall sections, said sections being linked in pairs by a fold line.
    When all of the wall sections - that is to say the bellows - is deployed, said assembly defines the maximum height of the deployable part.
    The maximum height is defined during the manufacture of the lid, it is chosen according to the content of the bucket and more precisely according to the height of the content of the bucket. The height of the contents of the bucket is usually planned beforehand.
    According to a preferred embodiment, the lower surface of the middle part is placed in contact with the top of the contents of the bucket. So the lower surface of the middle part is in
    BE2019 / 0055 pressing on the contents of the bucket, which further advantageously increases the stability of the stack of full buckets.
    Advantageously, the maximum height of the deployable part is less than or equal to one third of the height of the bucket.
    According to another aspect of the invention, the ratio between the maximum height of the deployable part and the length of the cover ranges from 1/10 to 1/4, in particular when the cover is a disc, the ratio between the maximum height of the deployable part and the diameter of the cover goes from 1/10 to 1/4.
    As already mentioned, a second object of the present invention relates to an assembly comprising a container and a cover capable of closing said container. Preferably, said container is a bucket.
    The section of the container body can be of substantially square or rectangle shape, it can also be of substantially circular or oval section. Each container comprises a body whose upper end is free and the lower end is closed by a bottom.
    The container has a free upper end with dimensions greater than those of its bottom, so that the containers can stack, the bottom of a container being able to be positioned, or even jammed, on the median wall of the lid of another container, the container having for example a frustoconical shape or a truncated pyramid shape with a rectangular base.
    According to a preferred embodiment of the invention, the container is a bucket of substantially circular section. Advantageously, the body of said bucket is of frustoconical shape, thus its free upper end defines a circle of diameter greater than the diameter of the circle defined by the lower end of the body.
    Advantageously, the bucket can be provided with a handle, said handle allowing easier transport of the bucket.
    According to a third object, the present invention relates to a method for manufacturing a cover according to the invention, said method being an injection molding method comprising at least the following two steps, in this order:
    BE2019 / 0055
    a first step during which the rigid material is injected into a part of a mold capable of forming the middle part and the edge part preferably at a temperature ranging from 180 to 220 ° C;
    a second step during which the flexible material is injected into another part of said mold capable of forming the deployable part, preferably at a temperature ranging from 200 to 240 ° C.
    Advantageously, the method of manufacturing the cover according to the invention is carried out by means of an injection press equipped with an injection mold comprising a fixed part, a mobile part, an ejection battery and a mobile core. The movable core is preferably a "metallic lock" corresponding to the deployable part of the cover, that is to say in the form of a bellows.
    Generally, the mold is continuously cooled so that its temperature remains stable and constant during the plastic transformation process, in this case, it does not exceed about 30 ° C.
    During the first step, the rigid material is injected into the mold equipped with said movable core generally at a temperature ranging from 180 to 220 ° C, preferably about 200 ° C.
    Advantageously, the injection is carried out under pressure in order to avoid any phenomenon of withdrawal of the material. The withdrawal of the material could indeed lead to the creation of defects, cracks in the parts of the cover formed from said rigid material.
    At the end of this first step, the rigid material takes the shape of the middle and border parts and solidifies during the cooling phase.
    During the second step, the flexible material is injected into the mold, the movable part of which has been opened, generally at a temperature ranging from 200 to 240 ° C, preferably around 220 ° C.
    At the end of this second step, the flexible material on cooling adopts the "bellows" shape of the movable part of the mold, and solidifies during the cooling phase.
    Advantageously, the rigid material is chosen from ethylene polymers and propylene polymers.
    BE2019 / 0055
    Advantageously, the flexible material is chosen from thermoplastic elastomers (TPE).
    For example, the cover is obtained by injection molding, with in a first step the injection of a polyethylene (PE) or polypropylene (PP) to form the middle part and the edge part, then the injection a thermoplastic elastomer (TPE) to form the deployable part.
    It falls within the general competence of those skilled in the art to adapt the injection temperatures of the stages as a function of the melting temperature of the rigid and flexible materials chosen.
    Other objects, details, characteristics and advantages of the invention are presented in the following detailed explanatory description of a particular preferred embodiment of the invention, with reference to the appended schematic drawings in which:
    Figure 1 is a perspective view of the cover according to the invention;
    Figure 2 is a top view of the cover according to the invention;
    Figure 3 is a sectional view of the cover according to the invention in which the deployable part is in its rest position;
    Figure 4 is an enlarged view of detail D of Figure 3 illustrating the deployable part in the rest position;
    Figure 5 is a sectional view of the cover according to the invention in which the deployable part is in its deployed position;
    Figure 6 is a sectional view of a stack of two buckets N and N + 1 where the deployable part of the lid of the bucket N is in its rest position;
    Figure 7 is a sectional view of a stack of two buckets N and N + 1 where the deployable part of the lid of the bucket N is in its deployed position;
    Figure 8 is a sectional view of a stack of five covers in the rest position.
    In the present description, when two buckets are stacked, the bucket located below is called "bucket N" and the bucket located above is called "bucket N + 1".
    With reference to FIGS. 1 to 4, the cover 3 according to the invention is crossed at its center by a main axis or axis of symmetry A1. The cover 3 comprises a middle part 4, a
    BE2019 / 0055 deployable part 6, and an edge part 5. The middle part 4 is in the general form of a disc provided with a reinforcing groove 12, having an upper main face and a lower main face, and extending from the side of its upper face by a substantially vertical internal annular wall 10. The deployable part 6 is assembled at the free edge of this annular wall 10. With particular reference to FIG. 4, said border part 5 is in the form of a ring comprising an annular vertical internal wall 7, a horizontal central wall 8 and an external annular wall 9 these walls 7, 8 and 9 forming an annular groove of general U-shaped section. The deployable part 6 is assembled at the free edge of this internal annular wall 7. The external annular wall 9 is extended by one or more several gripping tabs 11, for example two in number. The vertical internal annular wall 7 is here provided with a plurality of ribs 13 extending radially outward towards the external annular wall.
    The deployable part 6 is formed of a bellows composed of five wall sections, the deployable part being in the rest position in FIGS. 1 to 4
    Figure 4 is an enlarged view of detail D of Figure 3. Figure 4 illustrates the detail of the deployable part 6 in the rest position. This figure shows the middle part 4 connected by its internal annular wall 10 to the deployable part 6, itself connected to its internal annular wall 7 of the border part 5. The deployable part 6 is composed of a bellows formed of five wall sections 61, 63, 65, 67, 69 connected two by two respectively by the fold lines 62, 64, 66 and 68.
    In FIG. 5 is shown the cover with the middle part 4, the deployable part 6 in the deployed position and the border part 5.
    FIG. 6 shows a stack of two buckets N and N + 1 in which the deployable part of the cover 3 of the bucket N is in the rest position. Each bucket comprises a frustoconical body 1, of main axis of symmetry A2, the upper end of which is free and the lower end is closed by a bottom 2. The bottom 2 of the bucket N + 1 is in contact with the upper face of the middle part of the bucket N.
    FIG. 7 shows a stack of two buckets N and N + l in which the deployable part 6 of the cover 3 of the bucket N is in the deployed position under the effect of the weight of the bucket N + l.
    In Figure 8 is shown a stack of five covers 3 in the rest position.
    权利要求:
    Claims (6)
    [1]
    1. Lid intended to close a container in the form of a bucket, characterized in that said lid (3) comprises a middle part (4) made of a rigid material, an edge part (5) made of a rigid material shaped to fit on the edge of the upper end of said container, said middle part and edge part being connected by a part (6) deployable in a flexible material, the middle part (4) of the cover being a disc and the border part (5) being a crown, in which the ratio between the maximum height of the deployable part and the diameter of the cover ranges from 1/10 to 1/4.
    [2]
    2. Lid according to claim 1 wherein the edge portion (5) has a groove through which said cover (3) is adapted to come to fit on the edge of the upper end of said container, said groove being of cross section substantially U-shaped comprising a vertical internal annular wall (7) connected by a horizontal central wall (8) to an external annular wall or rim (9), preferably said edge portion is formed of a crown having an annular groove .
    [3]
    3. Cover according to any one of claims 1 or 2 wherein the deployable part comprises a bellows formed by at least two wall sections connected by a fold line.
    [4]
    4. Cover according to claim 3 wherein the deployable part is formed of a bellows comprising at least three wall sections, preferably at least four wall sections, more preferably at least five wall sections, said sections being connected two to two by a fold line.
    [5]
    5. An assembly comprising a container in the form of a bucket, and a lid capable of closing said container according to any one of claims 1 to 4.
    [6]
    6. Method for manufacturing a cover according to any one of claims 1 to 5, characterized in that it is an injection molding process comprising at least the following two steps, in this order:
    a first step during which the rigid material is injected into a part of a mold capable of forming the middle part and the edge part;
    a second step during which the flexible material is injected into another part of said mold capable of forming the deployable part.
    类似技术:
    公开号 | 公开日 | 专利标题
    EP2374727B9|2013-04-03|Food packaging with cover and sealing system for a package
    FR2937020A1|2010-04-16|FOOD PACKAGING WITH CLOSURE COVER
    FR2958632A1|2011-10-14|CLOSURE FOR REVERSE CONTAINER
    FR2991972A1|2013-12-20|STACKABLE CONTAINER HAVING A SHOULDER WITH THREE STABLE POSITIONS
    FR2590554A1|1987-05-29|PACKAGING CONTAINER
    BE1026274B1|2019-12-05|Deformable cover, manufacturing method and assembly comprising a container and a deformable cover
    WO2013088006A1|2013-06-20|Stackable container comprising an arched base having a wide area of contact
    EP1794065B1|2010-06-23|Sealing closure device for a container
    BE1022158B1|2016-02-22|PLASTIC CONTAINER FOR PACKAGING FOODSTUFFS, MOLDS FOR MANUFACTURING THE SAME, AND PROCESS FOR MANUFACTURING THE SAME.
    FR2662422A1|1991-11-29|METAL PACKAGING WITH SEALED PROFILE.
    FR2771073A1|1999-05-21|SHRINKABLE CONTAINER
    EP3802351A1|2021-04-14|Packaging comprising a plastic container with constant stacking pitch
    EP1870344A1|2007-12-26|Container for food products
    BE1003874A3|1992-07-07|New packaging for liquid or powder.
    EP1015327A2|2000-07-05|Packaging for food product, in particular for pastry and dairy product
    FR2925467A1|2009-06-26|Reclosable package for food product i.e. infantile milk powder, has frame with upper surface having projection extending in extension of lower surface of frame, and apron partially covering lower surface of frame for closing position
    FR3106337A1|2021-07-23|Packaging
    EP2146923B1|2011-05-18|Closure cover for container designed for storing carbonate liquids, and container provided with such a cover
    FR2659293A3|1991-09-13|Package formed from two containers joined together
    EP1502878B1|2009-03-11|Dispensing device
    FR3055320A1|2018-03-02|RETAINING DEVICE FOR A STORAGE CONTAINER OF PRODUCTS
    EP1783065A1|2007-05-09|Container for liquid products
    EP2909104B1|2016-11-09|Container for a liquid, comprising a pouch
    FR2925466A1|2009-06-26|Reclosable package for pulverulent food product, has cover including side wall and surface formed with depression, where actuating portion is arranged at opened level of depression, and is rotated in depression for taking unlocking position
    FR2925468A1|2009-06-26|Food product package, has frame comprising inner side wall that includes retaining member forming insertion housing with wall to receive wall portion of cup of measuring utensil with small gap
    同族专利:
    公开号 | 公开日
    ES1234084Y|2019-11-18|
    FR3082834B1|2021-12-10|
    FR3082834A1|2019-12-27|
    ES1234084U|2019-08-27|
    DE202019103478U1|2019-12-10|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    FR2665688B1|1990-08-13|1995-02-24|Cmb Packaging Sa|
    DK171723B1|1994-11-25|1997-04-14|Erik Bock|Drop resistant plastic lid for container|
    DE29715781U1|1997-09-03|1998-01-29|Martin Christof|Locking and protection device for food containers|
    CN2434239Y|2000-05-29|2001-06-13|林景胜|Package pot|
    US7299941B2|2003-04-15|2007-11-27|Dart Industries Inc.|Container seal with flexible central panel|
    EP2205498B1|2007-10-09|2012-12-05|The Folger Coffee Company|Packaging system with an overcap|
    法律状态:
    2020-01-23| FG| Patent granted|Effective date: 20191205 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1800694A|FR3082834B1|2018-06-25|2018-06-25|DEFORMABLE LID, MANUFACTURING PROCESS AND ASSEMBLY INCLUDING A CONTAINER AND A DEFORMABLE LID|
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