JP5054219B2 - Lid material - Google Patents

Description

  The present invention relates to a lid member that seals the opening of a container, and more particularly to a lid that is particularly effective for those that do not have an aluminum foil in that the gap with the opening of the container can be kept small even after opening.

Conventionally, a lid material using a laminated structure including an aluminum foil layer has been widely used as a lid material for sealing an opening of a container.
This is because a laminated structure including an aluminum foil layer has not only high light shielding properties and gas barrier properties, but also excellent shape maintainability.

For example, when cooking a dry food contained in a container, it is necessary to perform an operation of partially opening the lid, pouring hot water into the container, closing the opening with a lid material again, and waiting for a predetermined time.
In such cooking, it is difficult to pour hot water into the container unless the lid is maintained in a shape with the opening exposed. Moreover, if the lid is not maintained in a shape that substantially closes the opening again, water vapor leaks from the gap between the container and the lid, and cooking becomes incomplete.

  In recent years, waste separation has been demanded from the viewpoint of environmental protection, and it is also required that the lid material does not include an aluminum foil (aluminum-less).

  However, the conventional aluminum-less lid material has insufficient shape maintainability, and the lid material cannot be maintained in a shape with the opening exposed, or the lid material cannot be maintained in a state where the opening is generally blocked. Either problem occurs depending on the type of substrate.

  In the case of a lid using a base material that causes a problem that the opening cannot be maintained in a generally closed shape, a tab is provided at the end of the lid and the lid is opened by locking it to the flange of the container. It is possible to maintain a shape that substantially blocks the part.

  However, in such a structure, the effect of maintaining the lid member in a shape in which the opening is closed depends on the shape of the flange of the container. That is, the shape of the lid member must be changed according to the shape of the flange portion of the container to be applied, and the universality is poor.

  As a prior art relating to the realization of maintaining the state in which the container opening is kept closed by a lid material alone, there is “a lid for an instant food container” disclosed in Patent Document 1. The invention disclosed in Patent Document 1 maintains the state in which the lid closes the container opening by hooking the raised portion on the folded arch-shaped portion.

Japanese Utility Model Publication No. 5-72782

  However, in the invention disclosed in Patent Document 1, it is necessary to lift only the lifting portion at the time of opening. For that purpose, opening must be started from a place other than the peripheral edge of the lid, and the container opening operation There was a problem that it was difficult to do.

  The present invention has been made in view of such a problem, and an object thereof is to provide a lid member that is easy to open and closes an opening of a sealed container.

  Moreover, in order to achieve the said objective, this invention is a lid | cover material for plugging up the opening part of a container as a 1st aspect, Comprising: The base material layer and the sealant located in the lowest layer in order to adhere to a container And at least a part of the peripheral edge protrudes from the flange of the container, and a first full cut reaching the flange of the container in a crank shape is formed from the protruded part. A pair of the first full cuts are provided so that the side protruding from the flange of the container is wide, and the front half cuts are formed substantially parallel to the opening direction from the front ends of the respective first full cuts. The present invention provides a lid material characterized by the above.

  In the first aspect of the present invention, the pair of second full cuts are formed so as not to be in contact with the first full cut at a portion sandwiched between the first full cuts and protruding from the flange of the container. It is preferable. Or it is preferable that the 3rd full cut is formed from the bending part of a pair of 1st full cut substantially parallel to the front half cut. Alternatively, it is preferable that a fourth full cut is formed substantially perpendicular to the front half cut from between the bent portion and the tip of each of the pair of first full cuts.

  In the first aspect of the present invention, it is preferable that the laminated structure is configured without including an aluminum foil.

  According to the present invention, it is possible to provide a lid member that is easy to open and closes an opening of a sealed container.

It is a figure which shows the structure of the laminated structure used as the base of the cover material concerning this invention. It is a figure which shows the structure of the cover material concerning 1st Embodiment which implemented this invention suitably. It is a figure which shows the state which opened the cover material concerning 1st Embodiment partially. It is a figure which shows the state which closed the opening part with the cover material concerning 1st Embodiment. (A) is a figure which shows the principal part of the cover material which provided the notch for inserting a locking piece in an adjacent piece, (b) and (c) insert a locking piece in the notch of an adjacent piece It is a figure which shows the state which carried out. It is a figure which shows the structure of the cover material concerning 2nd Embodiment which implemented this invention suitably. It is a figure which shows the state which opened the cover material concerning 2nd Embodiment partially. It is a figure which shows the state which obstruct | occluded the opening part with the cover material concerning 2nd Embodiment. It is a figure which shows the state which closed the opening part with the cover material which provided the full cut for pinching a latching piece in the adjacent piece. (A) is a figure which shows another arrangement example of the full cut for pinching a locking piece, (b) is a figure which shows the state which pinched | interposed the locking piece with the adjacent piece and hold | maintained the opening piece. . It is a figure which shows the structure of the cover material concerning 3rd Embodiment which implemented this invention suitably. It is a figure which shows the state which opened the cover material concerning 3rd Embodiment partially. It is a figure which shows the state which block | closed the opening part with the cover material concerning 3rd Embodiment. (A) is a figure which shows the principal part of the cover material which provided the notch for inserting a locking piece in an opening piece, (b) and (c) insert a locking piece in the notch of an opening piece It is a figure which shows the state which carried out. It is a figure which shows the structure of the cover material concerning 4th Embodiment which implemented this invention suitably. It is a figure which shows the state which opened the cover material concerning 4th Embodiment partially. It is a figure which shows the state which block | closed the opening part with the cover material concerning 4th Embodiment. It is a figure which shows the structure of the cover material concerning 5th Embodiment which implemented this invention suitably. It is a figure which shows the state which opened the cover material concerning 5th Embodiment partially. It is a figure which shows the state which obstruct | occluded the opening part with the cover material concerning 5th Embodiment. It is a figure which shows the structural example of the cover material which can form a hot water cutting hole.

A preferred embodiment of the present invention will be described.
In FIG. 1, the structure of the laminated structure used as the base of the cover material concerning this invention is shown. This laminated structure has a substrate 1, a resin film 2, and a sealant layer 3.
The base material 1 is a layer for giving a sufficient strength as a lid material to the laminated structure or printing a design, and can be applied singly or by laminating known materials such as paper and PET film. The resin film 2 is a layer for imparting gas barrier properties and water resistance to the laminated structure, and a known material such as a polyethylene resin film can be applied. In addition, when the lowest layer of the base material 1 is formed of a material having gas barrier properties and water resistance (PET resin or the like), the layer substantially functions as the resin film layer 2. May not be provided separately. The sealant layer 3 is a layer for thermally bonding (heat sealing) to the flange of the container. The sealant layer 3 can be formed using a known material, but the type of the material is the material of the resin film 2 (the lowermost layer of the base material 1 if not provided) and the material of the flange portion of the container opening. Select according to.

  A full cut 10 and a front half cut 20 are formed at predetermined positions of the laminated structure. The full cut 10 is a notch penetrating from the front surface to the back surface of the laminated structure. The front half-cut 20 penetrates the laminated structure that reaches, for example, the base material 1 on the surface of the laminated structure to the middle of the resin film 2 (the lowermost layer of the base material 1 when the resin film 2 is not provided). Do not cut. Note that the full cut 10 is formed so as not to reach the inside of the opening of the container in any position.

[First Embodiment]
A first embodiment in which the present invention is suitably implemented will be described. In FIG. 2, the structure of the cover material concerning this embodiment is shown. At least a part of the periphery of the lid member 50 protrudes from the flange of the container. Front half cuts 20a and 20b are formed substantially parallel to the portion of the lid member 50 protruding from the container flange. Here, the region sandwiched between the front half cuts 20a and 20b is referred to as an opening piece 50c. Further, the peripheral side (opposite side of the opening piece 50c) from the front half-cut 20a is referred to as an adjacent piece 50a, and the peripheral side (opposite side from the opening piece 50c) from the front half-cut 20b is referred to as an adjacent piece 50b.
The portions protruding from the flange of the opening piece 50c are provided with substantially U-shaped full cuts 10a and 20b in proximity to the front half cuts 20a and 20b, respectively. The full cuts 10a and 10b are U-shaped with the side of the adjacent front half-cut 20a (or 20b) open.

  When starting cooking, the end of the opening piece 50c is held and rolled up. Then, the laminated structure is sheared along the front half cuts 20a and 20b, and an opening 50d is formed in the lid member 50 as shown in FIG.

  After pouring hot water into the container through the opening 50d, the opening 50d is closed with an opening piece 50c. After closing the opening 50d with the opening piece 50c, a part of the opening piece 50c is folded back toward the substrate 1 along the full cuts 10a and 10b to form the locking pieces 60a and 60b. As shown in FIG. 4, when the locking pieces 60a and 60b are respectively inserted under the adjacent pieces 50a and 50b, the opening piece 50c is prevented from turning up. Thereby, the opening piece 50c is maintained in the state of closing the opening 50d. In addition, as shown in FIG. 5, the adjacent piece 50a may be provided with a cut (full cut) 15a, and the locking piece 60a may be inserted therein (the same applies to the adjacent piece 50b).

  As described above, the aluminum-less lid material according to the present embodiment can be maintained in a state where the container opening is closed even if the material does not include an aluminum foil. And since it can open from the edge part instead of the center part of a cover material, it is easy to perform an opening operation | work.

[Second Embodiment]
A second embodiment in which the present invention is suitably implemented will be described. FIG. 6 shows the configuration of the lid according to the present embodiment.
At least a part of the periphery of the lid member 50 protrudes from the flange of the container. Crank-shaped full cuts 10c and 10d are provided on the portion of the lid 50 that protrudes from the container flange, and reach the flange portion of the container. Front half cuts 20c and 20d are formed substantially in parallel from the front ends of the full cuts 10c and 10d. Here, a region sandwiched between the full cut 10c and the front half cut 20c and the full cut 10d and the front half cut 20d is referred to as an opening piece 50c. Further, the peripheral side (the side opposite to the unsealed piece 50c) from the full cut 10c and the front half cut 20c is an adjacent piece 50a, and the peripheral side (the side opposite to the unsealed piece 50c) from the full cut 10d and the front half cut 20d is an adjacent piece. 50b, respectively.
The full cuts 10c and 10d are formed so that the peripheral side of the adjacent piece 50c is wide.

  When starting cooking, the end of the opening piece 50c is held and rolled up. Then, the laminated structure is sheared along the front half cuts 20c and 20d, and an opening 50d is formed in the lid member 50 as shown in FIG.

  After pouring hot water into the container through the opening 50d, the opening 50d is closed with an opening piece 50c. After the opening 50d is closed with the opening piece 50c, the end of the opening piece 50c (the crank portion of the full cuts 10c and 10d) is folded back toward the base 1 to form the locking piece 60c. As shown in FIG. 8, when the locking piece 60c is made to sink under the adjacent pieces 50a and 50b, the opening piece 50c is prevented from turning up. Thereby, the opening piece 50c is maintained in the state of closing the opening 50d.

  It should be noted that full cuts 30a and 30b substantially parallel to the front half cuts 20a and 20b may be further provided at the bent portions of the crank-shaped full cuts 10c and 10d. As shown in FIG. 9, by providing the full cuts 30a and 30b, the locking piece 60c is sandwiched between the adjacent pieces 50a or 50b, and the opening piece 50c can be held more reliably. In addition, as shown to Fig.10 (a), the full cut for pinching the latching piece 60c is parallel to table | surface halfcuts 20a and 20b from between the bending part and front-end | tip part of crank-shaped fullcuts 10c and 10c. You may form in. Even in such a configuration, as shown in FIG. 10B, the locking piece 60c can be sandwiched between the adjacent pieces 50a and 50b to hold the opening piece 50c.

  The aluminumless cover material according to the present embodiment can obtain the same effects as those of the first embodiment.

[Third Embodiment]
A third embodiment in which the present invention is preferably implemented will be described. FIG. 11 shows the configuration of the lid according to the present embodiment. At least a part of the periphery of the lid member 50 protrudes from the flange of the container. Front half cuts 20e and 20f are formed substantially parallel to the portion of the lid member 50 protruding from the container flange. Here, a region sandwiched between the front half cuts 20e and 20f is referred to as an opening piece 50c. Further, the peripheral side (opposite side of the opening piece 50c) from the front half cut 20e is referred to as an adjacent piece 50a, and the peripheral side (opposite side from the opening piece 50c) from the front half cut 20f is referred to as an adjacent piece 50b.
A substantially U-shaped full cut 10e is provided in the vicinity of the front half-cut 20e at a portion protruding from the flange of the adjacent piece 50a. The full cut 10e has a U shape with the front half cut 20e side open. Further, a substantially U-shaped full cut 10f is provided in the vicinity of the front half-cut 20f at a portion protruding from the flange of the adjacent piece 50b. The full cut 10f has a U shape with the front half cut 20f side open.

  When starting cooking, the end of the opening piece 50c is held and rolled up. Then, the laminated structure is sheared along the front half cuts 20e and 20f, and an opening 50d is formed in the lid member 50 as shown in FIG.

  After pouring hot water into the container through the opening 50d, the opening 50d is closed with an opening piece 50c. After the opening 50d is closed with the opening piece 50c, a part of the adjacent pieces 50a and 50b is folded back to the sealant layer 3 side along the full cut 10e or 10f to form the locking pieces 60e and 60f. As shown in FIG. 13, when the opening pieces 50c are overlapped so as to be positioned under the locking pieces 60e and 60f, the opening pieces 50c are prevented from being turned up. Thereby, the opening piece 50c is maintained in the state of closing the opening 50d. In addition, as shown in FIG. 14, you may make it provide the notch (full cut) 15e in the opening piece 50c, and insert the latching piece 60e in this (it is the same also about the opening piece 50b side).

  The aluminumless cover material according to the present embodiment can obtain the same effects as those of the first embodiment.

[Fourth Embodiment]
A fourth embodiment in which the present invention is preferably implemented will be described. FIG. 15 shows the configuration of the lid according to the present embodiment. The configuration of the lid member 50 is substantially the same as that of the second embodiment, but full cuts 10g and 10h are provided near the center of the opening piece 50c near the full cuts 10c and 10d of the opening piece 50c. . The full cuts 10g and 10h are cut to the bent portions of the full cuts 10c and 10d.

  When starting cooking, the end of the opening piece 50c is held and rolled up. Then, the laminated structure is sheared along the front half cuts 20c and 20d, and an opening 50d is formed in the lid member 50 as shown in FIG.

  After pouring hot water into the container through the opening 50d, the opening 50d is closed with an opening piece 50c. After the opening 50d is closed with the opening piece 50c, a part of the end of the opening piece 50c (the crank part of the full cuts 10c and 10d) is folded back to form the locking pieces 60g and 60h. As shown in FIG. 17, when the locking pieces 60g and 60h are respectively inserted under the adjacent pieces 50a and 50b, the opening pieces 50c are prevented from turning up. Thereby, the opening piece 50c is maintained in the state of closing the opening 50d.

  The aluminumless cover material according to the present embodiment can obtain the same effects as those of the first embodiment.

[Fifth Embodiment]
A fifth embodiment in which the present invention is preferably implemented will be described. FIG. 18 shows a configuration of the lid according to the present embodiment. At least a part of the periphery of the lid member 50 protrudes from the flange of the container. Front half-cuts 20i and 20j are formed substantially parallel to the portion of the lid member 50 protruding from the container flange. Here, the region sandwiched between the front half cuts 20i and 20j is referred to as an opening piece 50c. Moreover, the peripheral side (opposite side to the opening piece 50c) from the front half-cut 20i is referred to as an adjacent piece 50a, and the peripheral side (opposite side from the opening piece 50c) from the front half-cut 20j is referred to as an adjacent piece 50b.
A portion that protrudes from the flange of the adjacent piece 50a is provided with a substantially L-shaped full cut 10i adjacent to the front half cut 20i. The full cut 10i has a shape that is cut from the peripheral edge of the adjacent piece 50a substantially parallel to the front half cut 20i and bent toward the front half cut 20i. Further, a substantially L-shaped full cut 10j is provided in the vicinity of the front half-cut 20j at a portion protruding from the flange of the adjacent piece 50b. The full cut 10j is cut from the peripheral edge of the adjacent piece 50b substantially parallel to the front half cut 20j and bent toward the front half cut 20j.

  When starting cooking, the end of the opening piece 50c is held and rolled up. Then, the laminated structure is sheared along the front half cuts 20i and 20j, and an opening 50d is formed in the lid member 50 as shown in FIG.

  After pouring hot water into the container through the opening 50d, the opening 50d is closed with an opening piece 50c. After the opening 50d is closed with the opening piece 50c, a part of the adjacent pieces 50a and 50b is folded back toward the sealant layer 3 along the full cut 10i or 10j to form the locking pieces 60i and 60j. As shown in FIG. 20, when the opening pieces 50c are overlapped so as to be positioned under the locking pieces 60i and 60j, the opening pieces 50c are prevented from turning up. Thereby, the opening piece 50c is maintained in the state of closing the opening 50d.

  The aluminumless cover material according to the present embodiment can obtain the same effects as those of the first embodiment.

Each of the above embodiments is an example of a preferred embodiment of the present invention, and the present invention is not limited to these.
For example, the locking piece may be formed by folding back an opening piece or a part of an adjacent piece in a direction opposite to that of each of the above embodiments.
Further, the shape of the flange portion of the container is arbitrary, and may be circular or elliptical.
Furthermore, the present invention can also be applied to a lid member capable of forming a hot water cutting hole. In order to be able to form a hot water cut hole, as shown in FIG. 21, the position facing the opening piece of the lid is surrounded by a front half cut, and the back half cut (cut from the sealant layer side) is made in the enclosed area. It is only necessary to form at least one half cut that does not penetrate the rare resin film.
The U-shaped full cut may be U-shaped, or may be L-shaped, crank-shaped, or a similar shape, and the design can be changed within a range having similar functions.
In addition, the formation of the opening portion on the right side is a problem in design, and it may be formed in any way as long as the function of the present invention is achieved.
As described above, the present invention can be variously modified.

DESCRIPTION OF SYMBOLS 1 Base material 2 Resin film 3 Sealant layer 10, 10a, 10b, 10c, 10d, 10e, 10f, 10g, 10h, 10i, 10j Full cut 15a, 15e Cutting (full cut)
20, 20a, 20b, 20c, 20d, 20e, 20f, 20g, 20h, 20i, 20j Table half cut 50 Lid 50a, 50b Adjacent piece 50c Opening piece 50d Opening 60a, 60b, 60c, 60e, 60f, 60g, 60h, 60i, 60j Locking piece

Claims (5)

A lid for closing the opening of the container,
It is configured using a laminated structure having at least a base material layer and a sealant layer located at the lowest layer in order to adhere to the container,
At least a part of the peripheral edge protrudes from the flange of the container, and from the protruded part, a pair of first full cuts that are crank-shaped and the tip reaches the flange of the container are sandwiched between the first full cuts and The side protruding from the flange of the container is provided to be wide,
A lid member in which a front half cut is formed substantially in parallel with the opening direction from the tip of each first full cut.   A pair of second full cuts are formed so as not to be in contact with the first full cut at a portion sandwiched between the first full cuts and protruding from a flange of the container. The lid according to claim 1.   The lid material according to claim 1, wherein a third full cut is formed substantially parallel to the front half cut from the bent portion of each of the pair of first full cuts.   The lid material according to claim 1, wherein a fourth full cut is formed substantially perpendicular to the front half cut from between the bent portion and the tip of each of the pair of first full cuts. .   The said laminated structure is comprised without including aluminum foil, The lid | cover material of any one of Claim 1 to 4 characterized by the above-mentioned.

Images