JP2011126589A - Sealing lid having ring tab - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sealing lid having a ring tab, the lid being configured so that the yield of a sheet as a material is high and the ability to be conveyed is satisfactory even when the separate ring tab is kept attached to the sealing lid. <P>SOLUTION: In the sealing lid 1 comprising a ring tab 3, a sealing lid body 2 formed of a thin film sheet material has a panel 21 covering the opening of the container to seal it and a projecting piece 22 projecting from the peripheral portion of the panel 21. Also, in the sealing lid, the ring tab 3 formed separately from the sealing lid body 2 has a base 31 firmly fixed to the projecting piece 22 of the sealing lid body 2 and a finger hooking portion 32 around which a finger may be hooked. The sealing lid 1 is configured such that the finger hooking portion 32 of the ring tab 3 is partially fitted to the panel 21 of the sealing lid body 2 so as to be detachable (by means a groove 23 formed for fitting). <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a thin film-like seal lid for covering and sealing an opening of a container, and in particular, a seal lid provided with a ring-shaped tab, which has a good yield of a sheet material as a material, and The present invention relates to a thin film-like seal lid that has good transportability even with a ring-shaped tab attached to the body.

  For food containers such as solid foods and powdered foods, in order to make it easier to place fingers when opening the container by peeling off the seal cover, for the thin film seal cover to cover and seal the opening of the container, Various types of seal lids with ring-shaped tabs have been proposed.

  As for the sealing lid provided with such a ring-shaped tab, for example, in Patent Document 1 below, the canopy with a sealing lid covers the opening hole of the canopy with respect to the canopy that is fastened to the can body. It is disclosed that a seal lid that is thermally welded to the canopy is provided, and an opening tab having a ring-shaped finger-hanging portion is provided in the periphery of the seal lid. .

  In addition, in Patent Document 2 below, a container with an edge cover is provided with a cover plate that is tightly wound and secured to a can body, and a seal cover that is bonded to the upper surface of the cover plate. It is disclosed that the sealing lid that closes the opening is provided with a tab that is not bonded to the lid plate at its end, and a pull ring that is molded separately is attached to this tab.

JP 2003-81318 A Japanese Utility Model Publication No. 6-44724

  By the way, with respect to the seal lid provided with the conventionally known ring-shaped tab as described above, since the tab described in Patent Document 1 is formed integrally with the peripheral portion of the seal lid, When forming a seal lid by punching a thin sheet material into a predetermined shape, the portion that will be a tab with a ring-shaped finger hook must be punched out so as to protrude greatly from the disc-shaped panel portion of the seal lid. Therefore, there is a problem in that the number of seal lids per unit area that can be punched out from the sheet material is reduced, and the yield of the sheet material that is the material is deteriorated.

  On the other hand, in what is described in the above-mentioned Patent Document 2, when the sheet material is punched and a seal lid is formed, only the tab that becomes the pull ring attachment portion protrudes small from the disk-like panel portion. However, since the yield of the sheet material that is the material is improved, a separate pull ring is attached to the thin tab integrally formed on the seal lid, so the lid provided with the seal lid When transporting a body or container upside down, there is a problem that the separately formed pull ring cannot be supported by the strength of the thin-walled tab, and the pull ring hangs down by its own weight and interferes with the transport.

  An object of the present invention is to solve the above-described problems. Specifically, with respect to a seal lid provided with a ring-shaped tab, the yield of a sheet material as a material is good and a separate body. Thus, it is an object of the present invention to improve the transportability even when the ring-shaped tab is attached.

  In order to solve the above-described problems, the present invention provides a panel portion in which a sealing lid body made of a thin-film sheet material covers and seals an opening of a container, and a protruding piece protruding from a peripheral portion of the panel portion And a ring-shaped tab formed separately from the seal lid main body has a base portion fixed to the protruding piece of the seal lid main body and a finger hook portion for hanging a finger. The seal lid provided with a tab is characterized in that a finger hooking portion of the tab is partially fitted to the panel portion of the seal lid main body in a detachable state.

  According to the seal lid provided with the ring-shaped tab of the present invention as described above, since the ring-shaped tab is formed separately from the seal lid body, when punching the seal lid from the sheet material, Since only the protruding piece needs to protrude small from the disk-shaped panel portion, the yield of the sheet material that is the material can be improved, and the ring-shaped tab finger-hanging portion with respect to the panel portion of the seal lid body Therefore, even if the protruding piece that secures the base of the tab is a thin film, the tab's finger hook can be securely fixed to the panel of the seal lid, and the seal lid can be placed upside down. Even when transporting, it is possible to prevent the tab from hanging down and causing a transport failure.

  When peeling off the seal lid from the opening of the container, by hooking the finger on the portion of the tab that is not fitted to the panel portion of the seal lid body and lifting the tab finger-hanging portion, The tab finger rest can be removed from the fitting part of the panel part of the seal lid body, and then the tab is pulled up by placing the finger on the tab finger rest and integrated with the protruding piece to which the base of the tab is fixed In particular, the panel portion of the seal lid body can be easily peeled off from the opening of the container.

It is a top view which shows the whole seal lid | cover provided with the ring-shaped tab about one Example of this invention. It is a top view which shows the seal | sticker lid main body punched out from the sheet | seat material, and a ring-shaped tab separate from it, respectively. It is upper surface explanatory drawing which shows each step (A), (B), (C) for attaching a ring-shaped tab with respect to a seal lid main body. It is a top view which shows the state which sealed the opening part of the lid frame with the seal lid. It is sectional explanatory drawing along the AA of FIG. 4 which shows the state before the opening part of a lid frame body is sealed by a seal lid.

  Examples of the sealing lid provided with a ring-shaped tab are as follows in order to improve the yield of the sheet material as a material and to improve the transportability even when the ring-shaped tab is attached separately. As shown in detail, the seal lid body made of a thin sheet material has a panel portion that covers and seals the opening of the container, and a protruding piece that projects from the peripheral portion of the panel portion. In a seal lid provided with a ring-shaped tab in which a ring-shaped tab formed separately from the main body has a base portion fixed to the protruding piece of the seal lid main body and a finger hook portion for hanging a finger. This is realized by partially fitting the finger hooking portion of the tab to the panel portion of the seal lid main body in a detachable state.

  The seal lid of the present embodiment is used for sealing an opening for taking out contents in, for example, a can container for storing food, and as shown in FIG. The ring-shaped tab 3 formed separately is attached to the seal lid body 2 made of a thin-film sheet material. As shown in FIG. 2, each structure of the seal lid body 2 and the ring-shaped tab 3 is formed on the seal lid body 2 on the disk-shaped panel portion 21 and the peripheral portion of the panel portion 21. The projecting piece 22 is integrally formed. The ring-shaped tab 3 has a linear base 31 fixed to the projecting piece 21 of the seal lid body 2 and an arcuate shape for hooking a finger when opening. The finger hook portion 32 is integrally formed.

  The thin film sheet material used as the material of the seal lid body 2 is not particularly limited, but in this embodiment, the thin film base material mainly composed of an aluminum foil or a gas barrier synthetic resin film is used. An adhesive resin layer for bonding to the periphery of the container opening is formed on the inner surface side (the inner side of the container), and a resin coating is applied to the outer surface side of the base material (the outer side of the container). A thin sheet material in which a resin layer is formed by laminating resin films is used, and the thickness of this sheet material is preferably in the range of 20 to 150 μm (preferably 40 to 100 μm). .

  The ring-shaped tab 3 is thicker and more rigid than the seal lid body 2, and the material thereof is not particularly limited, but in this embodiment, a polyester-based resin such as polyethylene terephthalate. Or a thermoplastic resin material such as an olefin resin such as polyethylene or polypropylene, which is molded by injection molding or stamping, and the thickness of this tab is preferably 0.5 to 3 mm (preferably The thing of the range of 1-2 mm can be used conveniently.

  The method of attaching the ring-shaped tab to the seal lid body is not particularly limited, but as shown in FIG. 3, in the seal lid of this embodiment, as shown in FIG. 3B, the projecting piece 22 of the seal lid body 2 is moved from its base to the outer surface side of the panel section 21. As shown in FIG. Then, as shown in FIG. 3C, the base portion 31 of the tab 3 is placed on the approximate center of the folded protruding piece 21. Then, from this state, the distal end side 22a of the protruding piece 22 is folded in the reverse direction so as to wind up the base 31 of the tab 3, and the inner surface of the protruding piece 21 (the adhesive resin layer of the adhesive resin layer) The side) is bonded to each other by a known heat sealing method, ultrasonic sealing method, or the like, thereby forming a seal lid 1 having a ring-shaped tab 3 as shown in FIG.

  In the present embodiment, the seal lid 1 formed as described above is centered with respect to the metal lid frame 4 that is wound and fixed to the end portion of the metal can body, as shown in FIG. It is used so as to seal the circular opening 41 that is open to the top. That is, from the state in which the seal lid 1 is placed so as to cover the circular opening 41 opened at the center of the metal lid frame 4, the seal lid is formed by a known heat sealing method, ultrasonic sealing method, or the like. The outer peripheral portion of the disk-shaped panel portion 21 of the main body 2 is bonded and fixed to the peripheral portion of the opening 41 of the lid frame 4. In addition, the lid frame body 4 in which the opening 41 is sealed as described above is wound and fixed to the upper end side of the can body.

  By the way, in the seal lid 1 in which the ring-shaped tab 3 is attached to the seal lid main body 2 as described above, in this embodiment, the panel portion 21 of the seal lid main body 2 has a panel near the protruding piece 22. An arc-shaped groove portion 23 is formed so as to be recessed from the flat upper surface of the portion 21, and a finger insertion recess 24 is formed in a state continuous with the arc-shaped groove portion 23. The arc-shaped groove portion 23 is for fitting the finger-hook portion 32 of the ring-shaped tab 3 and is set so that the groove depth gradually increases from both ends of the arc toward the center portion. In the vicinity of the center of the deepest arc, it is continuous with the recess 24 for finger insertion.

  In a state in which the ring-shaped tab 3 is attached to such a seal lid main body 2, as shown in FIG. With respect to the base portion 31 of the tab 3 located in the vicinity of the end portion of the groove portion 23, the finger hook portion 32 of the tab 3 extends along the groove bottom of the fitting groove portion 23 that gradually becomes deeper in the direction away from the base portion 31 of the tab 3. The tip of the finger hooking portion 32 of the tab 3 (the place farthest from the base 31 of the tab 3) is opposed to the finger insertion recess 24. ing.

  In the present embodiment, in the arc-shaped groove portion 23, the region extending from the portion continuous with the finger insertion concave portion 24 to the left and right along the circumferential direction of the groove portion 23 is fitted with the finger hook portion 32 of the tab 3. A fitting groove 23 is detachably fitted. As for the fitting position between the finger hooking portion 32 of the tab 3 and the panel portion 21 of the seal lid main body 2, it is easy to apply a tensile force to the seal lid 1 when putting the finger on the finger hook portion 32 and peeling off the seal lid 1. It is preferable to fit so as to exclude the place. Specifically, in the finger hook portion 32, the center portion of the tab base portion 31 (intermediate portion in the length direction of the base portion 31) is orthogonal to the center portion. It is preferable to fit at a location that excludes the portion facing the central portion in the direction to be performed.

  The width of the groove 23 for fitting is set to be the same as or slightly narrower than the width of the finger hook 32 of the tab 3 so that the finger hook 32 of the tab 3 can be securely attached and detached. In this embodiment, the finger hook 32 is fitted into the groove 23 by pressing the groove 23 for fitting from above the finger hook 32 of the tab 3. Further, the depth of the groove 23 is preferably set to 50 to 150% of the thickness of the tab 3 at the deepest portion thereof, so that the tab 3 can be reliably fitted and the seal is sealed. The stackability and moldability of the lid 1 can also be ensured. Further, the depth of the finger insertion recess 24 is preferably set to 50 to 200% of the thickness of the tab 3, thereby making it easier to put a finger on the finger hooking portion 32 of the tab 3. The stackability and formability of the seal lid 1 can be ensured.

  According to the seal lid 1 of the present embodiment in which the finger hooking portion 32 of the tab 3 is detachably fitted to the panel portion 21 (the groove portion 23) of the seal lid main body 2 as described above, the thin film sheet When the base 31 of the tab 3 is only fixed by the protruding piece 22 of the seal lid body 2 made of a material, the seal lid 1 adhered to the metal lid frame 4 is transported upside down. In addition, there is a possibility that the tab 3 hangs down and causes a conveyance failure, whereas the finger hooking portion 32 of the tab 3 is fitted into the panel portion 21 (the groove portion 23) of the seal lid main body 2, It is possible to prevent the tab 3 from drooping and to prevent a conveyance failure.

  Then, when opening the can container to which the metal lid frame 4 to which the seal lid 1 is attached is wound and fixed, put a finger into the recess 24 formed in the panel portion 21 of the seal lid body 2, The finger hooking portion 32 of the tab 3 hangs the finger on the tip (the portion farthest from the base 31 of the tab 3) that is not fitted to the panel portion 21 of the seal lid body 2, and the finger hooking portion 32 of the tab 3 is lifted. Thus, after removing the finger hooking portion 32 of the tab 3 from the groove portion 23 of the panel portion 21 of the seal lid main body 2, the finger 3 is further put into the ring of the tab 3 and the tab 3 is pulled up, whereby the base portion 31 of the tab 3. The panel portion 21 of the seal lid main body 2 can be peeled off from the metal lid frame body 4 integrally with the protruding piece 22 to which the metal lid frame body 4 is attached, and is opened at the center portion of the metal lid frame body 4 The part 41 can be opened.

  Further, since the finger hooking portion 32 of the tab 3 is accommodated in the fitting groove portion 23 recessed in the panel portion 21 of the seal lid main body 2, the seal lid 1 bonded to the metal lid frame body 4 is conveyed. Even when an inadvertent force is applied from the lateral direction to the vicinity of the base 31 of the tab 3 protruding from the upper surface of the panel portion 21, the lateral displacement of the tab 3 is suppressed by the fitting groove 23. Therefore, it is possible to prevent the fitting between the panel portion 21 of the seal lid main body 2 and the finger hooking portion 32 of the tab 3 from being inadvertently released.

  As mentioned above, although the sealing lid provided with the ring-shaped tab of the present invention has been described with reference to one embodiment, the present invention is not limited to the specific examples shown in the above-described embodiments. In the embodiment, the seal lid is used so as to be bonded to the metal lid frame that is tightly fixed to the can body. However, it may be used so as to be directly bonded.

  Further, in the above embodiment, the adhesive resin layer provided on the inner surface side of the seal lid body is provided on the entire inner surface of the seal lid body, but the adhesive surface between the inner surface of the seal lid body and the periphery of the container opening. It may be provided only at the location. Further, in the above embodiment, the method as shown in FIG. 3 is adopted for fixing the tab to the projecting piece of the seal lid body. However, the method is not limited to such a method, and the tab is fixed by an appropriate method. It is good.

  In addition, as for the fitting portion of the panel portion of the seal lid main body, in the above embodiment, the groove portion for fitting is formed in an arc shape and the finger hook portion of the tab is fitted, but not limited to such a groove portion. For example, a pair of projecting portions are projected on the panel portion of the seal lid body so as to sandwich the tab finger rest portion at a position away from the tip of the tab finger rest portion, and the tab finger rest portion is located above the projecting portion. Needless to say, it is possible to change the design as appropriate, such as by pressing from above.

DESCRIPTION OF SYMBOLS 1 Seal lid | cover provided with the ring-shaped tab 2 Seal lid main body 3 Tab 4 Lid frame body 21 (Seal lid main body) Panel part 22 (Seal lid main body) Projection piece 23 (Panel part) fitting groove part 24 ( Recess for finger insertion (of panel) 31 Base of (tab) 32 Finger hook (of tab)

Claims (3)

  A seal lid body made of a thin-film sheet material has a panel portion that covers and seals the opening of the container, and a protruding piece that projects from the peripheral portion of the panel portion, and is formed separately from the seal lid body. In the sealing lid in which the ring-shaped tab has a base fixed to the protruding piece of the sealing lid main body and a finger hooking portion for hooking the finger, the tab fingering portion of the tab with respect to the panel portion of the sealing lid main body Is a seal lid provided with a ring-shaped tab that is partially fitted in a detachable state.   The tab base is disposed on the upper surface of the panel portion, whereas the finger hooking portion of the tab is partially fitted by a fitting groove recessed from the upper surface of the panel portion. A seal lid provided with the ring-shaped tab according to claim 1.   The finger insertion recess is provided in the panel portion of the seal lid main body so as to be continuous with a fitting groove for fitting the finger hooking portion of the tab. Seal lid with a ring-shaped tab.

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