JP2006044697A - Lid with hot water drip hole - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lid which includes no aluminum foil to allow use of a metal detector for product inspection, and shows a fine dead-hold property when peeled off despite of having no aluminum foil component, thereby preventing blocking of openings formed by peeling off the lid. <P>SOLUTION: The lid is peelably laminated with an outer lid having a paper layer and an inner lid composed of a plastic film layer and a thermally adhesive resin layer. A tab is formed on the outer peripheral edge of the lid. The inner lid is provided with an outer lid peeling starting cut, a plurality of hot water dripping cuts, and an opening cut. The inner surface of the outer lid is provided with a peeling layer, which is formed in the area that is inside the outer lid peeling starting cut and outside the hot water dripping cuts and the opening cut, and with a plurality of parallel cut lines, which are so formed in the area encircled with the opening cut as to be perpendicular to the line connecting the tab to the center of the lid. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention is a lid material used for the purpose of cutting off hot water after partially opening the lid material, injecting hot water into the container and steaming instant noodles etc. in the container and cooking, and does not include aluminum foil Since it is a lid material of the configuration, it becomes possible to use a metal detector for inspection of products packaged using this lid material, and it is possible to prevent the contamination of metal foreign matter into the product, The present invention relates to a lid material with a hot water hole that prevents the peeled outer lid from returning and closing the opening when the outer lid of the lid material is peeled about half from the inner lid to form an opening in the inner lid.

Conventionally, like lids of containers such as instant fried noodles, the lid is peeled off about half from the container to form an opening, hot water is poured into the container, steamed instant noodles, etc. The container lid is composed of an outer lid and an inner lid each having an opening knob projecting outward, and the inner lid has a hot water cut notch formed at a position facing the opening knob. Is a lid member having an outer lid cut portion that divides the outer lid into the opening knob part side in the vicinity of the hot water cut notch, and is located on the opposite side of the lid member from the opening knob part. An outwardly projecting hot water picking portion is formed, and an exfoliation incision that divides the inner lid between the hot water picking portion and the hot water cutting notch is formed, and at least an exfoliation incision Whether the outer lid and the inner lid are laminated via the release layer in the area surrounded by the outer lid cut line Become hot cutting perforated lid (e.g., see Patent Document 1) is known.
JP 2000-203654 A

  However, in the case of the lid material having the above configuration, since the inner lid includes an aluminum foil composed of a polyethylene layer, an aluminum foil layer, and a heat-adhesive resin layer, the lid is removed from the container by grasping the opening knob. In the state where it is peeled about half of the part and opened, the laminated aluminum foil gives plasticity to the lid material, so the dead hold property is good, and the peeled lid material returns by repulsive force to close the opening. However, since the aluminum laminate is included in the laminated body of the lid material, there is a drawback that the metal detector cannot be used for the inspection of the product to which the lid material is attached. Further, in the above lid material, when the inner lid is composed of a polyethylene layer not containing aluminum foil, a biaxially stretched film, and a heat-adhesive resin layer, the lid material has increased rigidity and the repulsive force of the lid material. The lid material loses its dead hold property and the peeled lid material returns and closes the opening, making it difficult to inject hot water into the container from the opening formed by peeling the lid material. There are drawbacks.

  The object of the present invention is to make it possible to use a metal detector for the inspection of a product using this lid material by making the laminated body constituting the lid material not including an aluminum foil. When it is possible to prevent the metal foreign matter from entering inside and to improve the dead hold property of the lid material, when the outer lid of the lid material is peeled about half from the inner lid and an opening is formed in the inner lid In addition, it is to provide a lid material with a hot water cut hole that facilitates the work of steaming and cooking instant noodles by pouring hot water into the container so that the peeled outer lid does not return and block the opening.

  A cover material having a structure in which a paper layer alone or an outer lid made of a plastic film layer and a paper layer, and an inner lid made of a plastic film layer and a heat-adhesive resin layer are detachably laminated, and is formed outwardly on the outer periphery. The inner lid is formed with an outer lid peeling start notch adjacent to the inside of the knob, and a plurality of hot water cuts are formed on the peripheral edge opposite to the knob. An opening notch is formed in a region between the hot water cutting notch and the outer lid peeling start notch, and a plurality of parallel lines in a direction orthogonal to a line connecting the knob and the center of the lid material are formed in the region inside the opening notch. A linear cut is formed, and on the inner surface of the outer lid, a release layer is formed in an area surrounded by the outer periphery of the lid material inside the outer lid peeling start cut and outside the hot water cut and the opening cut. This is a lid member with a hot water cut hole having the above-described configuration.

  The release layer is a second release layer having a high peel strength in a band shape having a predetermined width in a direction perpendicular to a line connecting the knob and the center of the lid material in a region between the hot water cut and the opening cut. The first release layer has a peel strength smaller than that of the second release layer except for the region where the second release layer is formed.

  In the outer lid, a broken line-like cut perpendicular to the line connecting the knob and the center of the lid is formed at a position near the opening cut.

  The plastic film layer constituting the inner lid is composed of a polylactic acid-based biodegradable biaxially stretched film and a biaxially stretched polystyrene film.

  By using the lid material with hot water cut holes according to the present invention, the laminate constituting the lid material does not contain aluminum foil, so inspection of the product attached by thermally bonding the lid material to a container containing instant fried noodles etc. It is possible to use a metal detector, and when the outer lid of the lid attached to the container is peeled about half from the container to form an opening in the inner lid, it is adhered and removed from the outer lid. Since a plurality of parallel linear cuts in the direction perpendicular to the peeling direction are formed in the inner lid of the region surrounded by the opening cut, the region surrounded by the opening cut by the plurality of parallel linear cuts It becomes possible to reduce the rigidity of the inner lid, and even if the lid material does not include an aluminum foil, the dead hold property of the lid material is improved, and the opening formed by the peeled outer lid is blocked. From the opening It becomes facilitate the task of cooking steaming the instant noodle by injecting hot water into the vessel.

  In the invention according to claim 2, the outer lid is peeled off from the inner lid, and when the peeling reaches the weak release layer formed on the outer lid, the peeling becomes heavy and difficult to peel off. Can be prevented from being completely peeled off, and peeling of the lid material can be stopped in a half-open state.

  In the invention according to claim 3, the outer lid is peeled off from the inner lid, and when the peeling reaches the broken line cut formed in the outer lid, the peeled outer lid is bent at the broken line cut portion. The peeled outer lid does not return and block the opening.

  In the invention according to claim 4, since the biodegradable biaxially stretched film and the biaxially stretched polystyrene film are easily plastically deformed, the dead hold property of the lid material when the outer lid is peeled can be improved. .

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 is a bottom view showing a first embodiment of the present invention, FIG. 2 is a cross-sectional view taken along the line II of FIG. 1, and FIG. 3 is a view showing a release layer formed on the inner surface of the outer lid of the first embodiment. 4 is a cross-sectional view corresponding to FIG. 2 showing the second embodiment of the present invention, FIG. 5 is a view showing a release layer formed on the inner surface of the outer lid of the second embodiment, and FIG. FIG. 7 is a cross-sectional view taken along the line II-II in FIG. 6, 2 is a knob, 3 is an outer lid peeling start cut, 4 is an opening cut, 4a is a protrusion, Reference numeral 5 is a cut for hot water cutting, 6 is a parallel linear cut, 7 is a first release layer, 8 is a second release layer, 9 is a broken line cut, 11 is an outer lid, and 12 is an inner lid.

  The first embodiment of the present invention is as shown in FIGS. The lid is made of a structure that does not include an aluminum foil, and the outer lid 11 and the inner lid 12 are detachably laminated. The outer lid 12 is formed with a knob 2 that protrudes outward, and the inner lid 12 The outer lid peeling start cut 3 is formed inside the knob 2, and a plurality of circular hot water cuts 5 are formed on the peripheral edge opposite to the knob 2. In the region between the outer lid peeling start cuts 3, an opening cut 4 having a substantially quadrangular shape and having a protruding portion 4 a protruding inward at a portion adjacent to the outer lid peeling start cut 3 is formed. In this configuration, a plurality of parallel linear cuts 6 having a predetermined interval in a direction orthogonal to the line connecting the knob 2 and the center of the lid member are formed in the region inside the opening cut 4.

  The laminated configuration of the first embodiment is as shown in FIG. 2, and the outer lid 11 and the inner lid 12 are laminated so as to be peelable through the first release layer 7 formed on the inner surface of the outer lid 11. Yes. The first release layer 7 of the outer lid 11 is formed in a region outside the hot water cutting notch 5 and the opening notch 4 inside the outer lid peeling start cut 3, and the inner lid 12 has an outer lid peeling. The starting cut 3, the hot water cut 5, the opening cut 4, and the parallel line cut 6 are formed so as to penetrate the inner lid 12.

  The shape of the 1st mold release layer 7 currently formed in the inner surface of the outer cover 11 in 1st Embodiment is an inner side from the outer cover peeling start notch 3, and the hot water cut notch 5 is shown in FIG. And formed in a region outside the opening cut 4. Accordingly, when the knob 2 is grasped and the lid material is peeled off, the outer lid 11 is peeled off from the inner lid 12 at the outer lid peeling start cut 3, and the region surrounded by the hot water cutting cut 5 of the inner lid 12 and A region surrounded by the opening cut 4 is extracted in a state of being bonded to the outer lid 11, and a hot water cutting hole and an opening are formed in the inner lid 12.

  In the second embodiment of the present invention, the sectional view corresponding to FIG. 2 is as shown in FIG. 4 and the release layer formed on the inner surface of the outer lid is shown in FIG. In contrast, the release layer formed on the inner surface of the outer lid 11 is in a direction perpendicular to the line connecting the knob 2 and the center of the lid member in the region between the hot water cut 5 and the opening cut 4. The configuration is basically the same as that of the first embodiment except that the second release layer 8 has a strip shape having a predetermined width and has a peel strength higher than that of the first release layer. In the second embodiment, the second release layer 8 is weaker than the first release layer 7, and the outer lid 11 and the inner lid 12 are peeled in the region where the second release layer 8 is formed. The force to be applied requires a stronger force than that in the region where the first release layer 7 is formed. Therefore, when the knob 2 is grasped and the lid material is peeled off, the outer lid 11 is peeled off from the inner lid 12 at the outer lid peeling start cut 3 and reaches the location of the second release layer 8 to reach the outer lid 11. Is difficult to peel off from the inner lid 12 and the outer lid 11 can be peeled off at the second release layer 8 to prevent the outer lid 11 from being completely peeled off from the inner lid 12 by mistake. can do.

  In the third embodiment of the present invention, a plan view is shown in FIG. 6 and a cross-sectional view is shown in FIG. 7, respectively. Compared with the second embodiment, the second release of the outer lid 11 is performed. A position near the opening notch 4 adjacent to the area where the layer 8 is formed is a position where a broken line-shaped notch 9 perpendicular to the line connecting the knob 2 and the center of the lid material is a predetermined distance inside the lid periphery. The second embodiment is basically the same as the second embodiment except that the second embodiment is different.

  The lid according to the first embodiment is attached to the mouth of a container containing instant fried noodles by heat bonding to form a package, and then the gripping part is grasped and the lid is peeled off from the container. When the outer lid is peeled off from the inner lid at the location of the outer lid and the portion surrounded by the opening cut of the inner lid is adhered to the outer lid and the opening is formed, the state adhered to the outer lid The inner lid in the area surrounded by the opening cuts that are extracted in (5) bends along a plurality of parallel linear cuts, reducing the rigidity of the outer lid at the location where the inner lid is adhered, and reducing the repulsive force Therefore, it is possible to prevent the peeled lid member from returning and closing the formed opening, and it becomes easy to inject hot water from the opening and cook instant noodles. After injecting hot water and cooking, the outer lid is completely peeled off from the inner lid to form a hot water cut hole in the inner lid, and after the hot water is cut off, the remaining inner lid adhered to the container mouth is removed. It is possible to eat cooked instant fried noodles and the like by grasping the protruding part on the outer lid peeling start cut side of the opening cut and peeling off from the container.

  In the case of the lid material of the second embodiment, the grip part is grasped and the lid material is peeled off from the container, and the outer lid is peeled off from the inner lid at the location of the outer lid peeling start cut point, and the location of the second release layer Since the peeling becomes heavy when it reaches the point, it becomes difficult to peel off, and the outer lid and the inner lid can be prevented from being completely peeled off. When the outer lid is peeled off from the inner lid and the opening of the inner lid is formed, the rigidity of the peeled lid material is reduced and the repulsive force is reduced, preventing the peeled lid material from returning and blocking the formed opening. The possible effects are the same as in the first embodiment. In the case of the third embodiment, the outer lid is peeled off from the inner lid at the position of the outer lid peeling start cut, and when the peeling reaches the broken line cut formed on the outer lid, the outer lid is broken. Since it bends outward along the cut line, the effect of preventing the peeled lid member from returning and closing the formed opening is further increased.

  In the first to third embodiments of the present invention, it is preferable that the interval between the plurality of parallel linear cuts 6 is 5 to 10 mm and is formed in the entire region surrounded by the opening cuts 4. When the interval between the parallel linear cuts 6 is 5 mm or less, the rigidity as the lid member is lowered, and conversely, when it is 10 mm or more, the dead halt property is lowered. By setting the interval between the parallel line-shaped cuts 6 within the above range, the lid 2 is grasped and peeled off, and the outer lid 11 is removed from the inner lid 12 and is removed while being adhered to the outer lid 11. The region surrounded by the opening cut 4 of the inner lid 12 is bent along the parallel line cut 6, so that the elasticity of the outer lid 11 is reduced and the dead hole property is improved. In the second and third embodiments, the width of the second release layer 8 in the direction orthogonal to the line connecting the knob 2 and the center of the lid member is preferably about 5 to 10 mm.

  As the releasable resin for forming the first release layer 7 and the second release layer 8, a simple substance or a mixture of nitrified cotton, polyamide resin, polyester resin, acrylic resin, butyral resin, or the like can be used. If necessary, a small amount of silicone or the like may be added. The release layer is formed by printing on the paper surface by gravure printing using the ink made of the above resin. The first release layer and the second release layer are formed using one type of printing plate by forming a halftone dot printing plate having a dot area ratio of 65 to 100%. It becomes possible to do. If the dot area ratio is less than 65%, the possibility of paper peeling increases, which is not preferable. The first release layer is formed using a halftone dot printing plate having a dot area ratio of 70 to 100%, and the second release layer is a halftone dot printing plate having a dot area ratio of 65 to 85%. Formed.

  As the laminated structure of the outer lid 11, a single paper or a laminated body of a biaxially stretched film and paper can be used. As the paper used for the outer lid 11, it is preferable to use a coated paper having a basis weight of 50 to 150 g. When the basis weight is 50 g or less, the outer lid peeling start cut, the opening cut, the hot water cut, the parallel line cut by half-cut from the inner surface of the laminated body for the lid material in which the outer lid and the inner lid are laminated. When forming so as to penetrate only the inner lid and reach the paper layer, it becomes difficult to stop half-cutting in the paper layer. As the inner lid 12, one having a configuration comprising a polyethylene layer, a biaxially stretched film, and a heat-adhesive resin layer can be used. As the biaxially stretched film, a polylactic acid-based biodegradable biaxially stretched film and a biaxially stretched polystyrene film (OPS) are particularly preferable. Return of the peeled lid material can be prevented.

  As a polylactic acid-based biodegradable film, for example, as described in JP-A-2001-122989, a polylactic acid-based polymer is a main component, and the temperature dependence of dynamic viscoelasticity based on JIS K7198 is concerned. A biodegradable biaxially stretched film having a storage elastic modulus E ′ of 100 to 230 MPa at 120 ° C. in the test method, having an area stretch ratio of 6.8 times or more, a longitudinal stretching temperature of 70 to 90 ° C., and lateral stretching. A biodegradable biaxially stretched film or the like that is biaxially stretched within a temperature range of 70 to 80 ° C. and heat-treated within a temperature range of 100 ° C. to a melting point (Tm) in a gripped state after biaxial stretching is used. be able to.

  As a laminated structure of the lid material, for example, PET / dry lamination (DL) / printing layer / single art paper / release layer / polyethylene (PE) / biodegradable biaxially stretched film / PE / thermal adhesive resin layer, PET / DL / printing layer / single art paper / release layer / PE / OPS / PE / thermal adhesive resin layer, PET / DL / printing layer / single art paper / release layer / PE / PET / PE / thermal bonding Resin layer, printing layer / single art paper / release layer / PE / biodegradable biaxially stretched film / PE / thermal adhesive resin layer, printing layer / single art paper / release layer / PE / OPS / PE / They are a heat-adhesive resin layer, a printing layer / one piece art paper / a release layer / PE / PET / PE / a heat-adhesive resin layer.

The bottom view which shows 1st Embodiment of this invention. II sectional view taken on the line of FIG. The figure which shows the mold release layer formed in the inner surface of the outer cover of 1st Embodiment. Sectional drawing corresponding to FIG. 2 which shows 2nd Embodiment of this invention. The figure which shows the mold release layer formed in the inner surface of the outer cover of 2nd Embodiment. The top view which shows 3rd Embodiment of this invention. II-II sectional view taken on the line of FIG.

Explanation of symbols

2 Picking part 3 Cut for starting peeling of outer lid 4 Cut for opening
4a Protruding part 5 Cut for hot water cut 6 Parallel cut line 7 First release layer 8 Second release layer 9 Broken line cut
11 outer lid
12 Inner lid

Claims (4)

A cover material having a structure in which a paper layer alone or an outer lid made of a plastic film layer and a paper layer, and an inner lid made of a plastic film layer and a heat-adhesive resin layer are detachably laminated, and is formed outwardly on the outer periphery. The inner lid is formed with an outer lid peeling start notch adjacent to the inside of the knob, and a plurality of hot water cuts are formed on the peripheral edge opposite to the knob. An opening notch is formed in a region between the hot water cutting notch and the outer lid peeling start notch, and a plurality of parallel lines in a direction orthogonal to a line connecting the knob and the center of the lid material are formed in the region inside the opening notch. A linear cut is formed, and on the inner surface of the outer lid, a release layer is formed in an area surrounded by the outer periphery of the lid material inside the outer lid peeling start cut and outside the hot water cut and the opening cut. The lid material with a hot water cut hole characterized by comprising the structure which was made. The release layer is a second release layer having a high peel strength in a band shape having a predetermined width in a direction perpendicular to a line connecting the knob and the center of the lid material in a region between the hot water cut and the opening cut. 2. With a hot water cut hole according to claim 1, wherein the first release layer has a peel strength smaller than that of the second release layer except for the region where the second release layer is formed. Lid material. The hot water according to claim 1 or 2, wherein the outer lid has a configuration in which a broken line-like cut perpendicular to a line connecting the knob and the center of the lid is formed at a position near the opening cut. Cover material with cut holes. The lid with a hot water hole according to any one of claims 1 to 3, wherein the plastic film layer constituting the inner lid is made of a polylactic acid-based biodegradable biaxially stretched film or a biaxially stretched polystyrene film. Wood.

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