JP2021046242A - Container with lid - Google Patents

Abstract

To provide a container having a new resealing structure.SOLUTION: A container 1 with a lid, includes a bottomed cylindrical container 10, and a lid material 20A closing an upper end opening of the container 10. A grip portion 21 extending outward is provided at a part of a peripheral edge portion of the lid material 20A, and a heat-sensitive adhesive 30 is applied on an outer surface of the container 10 within a range in which the grip portion 21 overlaps. The heat-sensitive adhesive 30 generates viscosity by being heated, and generates the viscosity by heat transmitted when hot water is poured into the cylindrical container 10. The grip portion 21 of the lid material 20A peeled off by approximately half from the upper end opening edge of the container 10 is overlapped on the outer surface of the container 10 on which the heat-sensitive adhesive 30 is applied, thereby resealing a container opening by the lid material 20A.SELECTED DRAWING: Figure 1

Description

The present invention relates to a container with a lid, and more specifically, the upper end opening of the container is closed by the lid material, the lid material is peeled off halfway to open the container, and then the opening is closed again to open the state. Regarding containers that can be kept for a while (easily resealed).

There is a container whose upper end opening is closed by a lid material. In some such containers, it is desired that the lid material, which has been partially peeled off, be returned to its original state, typically temporarily (the opening is resealed with the lid material). For example, in instant noodles in a cup, the lid material is peeled off halfway, and hot water is poured into the cup through the cup opening that is about half open. The lid material that has been peeled off by about half is used to easily reseal the cup opening, and is completely peeled off after a predetermined time.

Patent Document 1 provides a tab in which notches are formed at two opposite positions on the peripheral edge of the lid material, and the cup is resealed with the lid material by sandwiching the flange portion of the cup in the notch notches of the tab. Describe.

Japanese Unexamined Patent Publication No. 2001-180737

In the cup described in Patent Document 1, the tab formed on the periphery of the lid material is also used as a knob when the lid material is peeled off. Since the tab has a notch notch as described above, the tab may be torn off from the lid material along the notch when the lid material is peeled off.

An object of the present invention is to provide a container with a lid having a novel resealing structure.

The container with a lid according to the first invention includes a bottomed container and a lid material that is detachably adhered to the upper end opening edge of the bottomed container and closes the upper end opening of the container. A knob portion extending outward is provided on a part of the peripheral portion of the material, and the heat-sensitive adhesive is applied to the outer surface range of the container on which the knob portion is overlapped.

The upper end of the bottomed container is open, and after the contents are stored in the container from the upper end opening, a lid material is adhered to the upper end opening edge, thereby closing the upper end opening of the container containing the contents. A curl portion is preferably formed at the upper end opening edge of the container, and the lid material can be firmly adhered to the curl portion. The bottomed container generally has a cylindrical body having a diameter slightly larger than that of the lower part, but may have a constant diameter in the vertical direction, and has a polygonal square cylinder in cross section. May be good. A resin film or the like is provided on the inner surface of the container as needed.

A knob that extends outward is provided on a part of the peripheral edge of the lid material, and the lid material is peeled off from the upper end opening edge of the container by pinching the knob with fingers and pulling (pulling up) the lid material. be able to. The knob is preferably formed integrally with the lid material.

The knob extending outward from the peripheral edge of the lid material that closes the opening at the top of the container can be overlapped with the outer surface of the container by folding it downward. A heat-sensitive adhesive is applied to the outer surface of the container within the range where the knobs are overlapped when the knobs are bent downward. A heat-sensitive adhesive is an adhesive that develops adhesiveness in response to heat, and does not have adhesiveness at a temperature of less than 40 ° C. at room temperature. Once the lid material adhered to the upper end opening edge of the container is peeled off halfway and hot water is poured into the container, the heat from the hot water is transferred to the lid material and the container. The heat transferred from the boiling water poured into the container causes the heat-sensitive adhesive applied to the knob to develop adhesiveness.

According to the first invention, since the heat-sensitive adhesive is applied to the outer surface area of the container where the knobs are overlapped by being folded downward, the overlapped knobs are adhered to the outer surface of the container, thereby adhering to the outer surface of the container. The lid material partially peeled off from the upper end opening edge of the container can be refastened to the opening edge and resealed.

According to the first invention, it is not necessary to reseal the container opening with the lid material by using another member, for example, a separate adhesive tape. In addition, since it is only necessary to apply a thermal adhesive to the outer surface of the container where the knobs can overlap, no special processing is required. The container can be resealed at low cost.

The lid material according to the second invention includes a bottomed container and a lid material that is detachably adhered to the upper end opening edge of the bottomed container and closes the upper end opening of the container. Is composed of an upper layer sheet and a lower layer sheet laminated on the back surface side of the upper layer sheet, and a half-cut piece extending toward the center of the lid material is partitioned with a joint portion left near the peripheral edge portion of the lid material. The half-cut line is formed on the upper-layer sheet, the upper-layer sheet and the lower-layer sheet are fixed in a range excluding the half-cut piece, and the half-cut pieces turned over from the lid material are overlapped with each other. A heat-sensitive adhesive is applied to the outer surface range of the container.

The lid material constituting the container with a lid according to the second invention includes an upper layer sheet and a lower layer sheet laminated on the back surface side of the upper layer sheet. The underlayer sheet detachably adheres the lid material to the upper end opening edge of the container. One or more functional layers, such as an aluminum layer for shape retention, may be laminated between the upper sheet and the lower sheet. In any case, the lid material constituting the container with a lid of the second invention has a laminated structure in which a plurality of types of materials (sheets) are laminated.

On the upper layer sheet, a half-cut line for partitioning the half-cut pieces extending in the central direction of the lid material is formed with a joint portion left near the peripheral edge portion of the lid material. The half-cut line is formed on the upper sheet, not on the lower sheet below it.

The upper layer sheet and the lower layer sheet are fixed (typically bonded) in a range excluding the half-cut pieces separated by the half-cut lines. That is, in the region of the half-cut piece, the upper layer sheet and the lower layer sheet are not fixed (bonded). Needless to say, it is acceptable if the adhesive can be peeled off with the lightest force. In one embodiment, an easy-release agent is applied to the interface between the upper layer sheet and the lower layer sheet in the range of the half cut piece, whereby the upper layer sheet and the lower layer sheet (in the case of a two-layer structure) in the range of the half cut piece. Can be easily (with a light force) separation at these interfaces.

According to the second invention, the lid material itself (a part thereof) is used to fix the lid material, which has been peeled off halfway, to the container again, instead of the knob portion provided on the lid material. The half-cut line for partitioning the above-mentioned half-cut pieces is formed so that the half-cut pieces can be turned up in a state where the half-cut pieces are tied to the lid material in the vicinity of the peripheral edge of the lid material. (Part of) can be turned over from the lid material while it is still attached to the lid material and the lower layer sheet is left as it is. Since the heat-sensitive adhesive is applied to the outer surface area of the container on which the half-cut pieces turned over from the lid material are overlapped, when the upper sheet of the turned-up half-cut pieces is overlapped on the outer surface of the container body, the upper end of the container is overlapped. The lid material partially peeled off from the opening edge can be refastened to the opening edge of the container. Even if the half-cut piece (upper layer sheet) is turned over, the lower layer sheet remains, so there is no hole in the lid material.

The container with a lid according to the third invention includes a bottomed container and a lid material that is detachably adhered to the upper end opening edge of the bottomed container and closes the upper end opening of the container. The body of the container is composed of an upper layer sheet and a lower layer sheet laminated on the back surface side of the upper layer sheet, and a half cut extending below the body part with a connecting portion left near the upper end opening edge of the body portion of the container. A half-cut line for partitioning the pieces is formed on the upper-layer sheet, and the upper-layer sheet and the lower-layer sheet are fixed in a range excluding the half-cut pieces. A heat-sensitive adhesive is applied to the surface area of the half-cut piece that is hung between the surface of the lid material and overlapped with the surface of the lid material.

A heat-sensitive adhesive is applied to the surface of the half-cut piece that is turned over from the body. The half-cut piece turned over from the body portion is hung between the body portion and the surface of the lid material. Since the heat-sensitive adhesive is applied to the area of the surface of the half-cut piece so as to be overlapped with the surface of the lid material, the adhesiveness developed in the heat-sensitive adhesive by the heat transferred from the boiling water poured into the container once causes it. The lid material that has been peeled off halfway can be easily kept in a closed state.

An easy-release agent may also be applied to the interface between the upper layer sheet and the lower layer sheet in the range of the half-cut pieces formed on the body of the container.

It is a perspective view of the container with a lid of 1st Example which the lid material was peeled off about half. It is a perspective view of the container with a lid of 1st Example in a resealed state. It is an upper enlarged perspective view of the container with a lid of 2nd Example before resealing. It is an upper enlarged perspective view of the container with a lid of 2nd Example after resealing. It is an enlarged sectional view of the lid material along the VV line of FIG. It is a perspective view of the container with a lid of 3rd Example before resealing. It is a perspective view of the container with a lid of 3rd Example after resealing. FIG. 6 is an enlarged cross-sectional view of the body of the container along the line VIII-VIII of FIG.

1 and 2 show the container with a lid of the first embodiment. FIG. 1 is a perspective view of a container with the lid material peeled off by about half, and FIG. 2 is a perspective view of a container with a lid in a resealed state.

The container 1 with a lid includes a bottomed cylindrical container 10 and a lid material 20A that closes the upper end opening of the container 10.

The cylindrical container 10 is formed by laminating the side portions of the arc-shaped blank material to form a cylindrical shape, then curling the upper end peripheral portion outward and bending the lower end portion inward. .. The body of the container 10 has a cylindrical shape with a large diameter at the top and a small diameter at the bottom, and the upper surface to be opened is closed by the lid material 20A. The upper end peripheral portion of the container 10 is curled outward as described above, and a so-called curl portion 11 is formed. The open lower surface of the container 10 is closed by a circular bottom (not shown).

As the lid material 20A, a sealant layer for adhering the lid material 20A and a paper layer for printing characters, figures, etc. are laminated on the upper surface of the curl portion 11 of the container 10. An aluminum layer for maintaining the shape may be laminated between the sealant layer and the paper layer, or a protective layer for protecting the paper layer may be laminated on the surface of the paper layer. For the container (the body and the bottom thereof), for example, a paper base material and a laminated structure such as a polyethylene film laminated on the inner surface thereof are used. The lid material 20A is detachably adhered to the upper end opening edge (curl portion 11) of the container 10.

A part of the peripheral edge portion of the lid material 20A is formed so as to project outward, and the portion projecting outward is hereinafter referred to as "picking portion 21". The knob portion 21 has the same layer structure as the lid material 20A, but is located outside the upper end opening (curl portion 11) of the container 10 and is not used for closing the upper end opening of the container 10. As described below, the picking portion 21 is used for picking the lid material 20A with a finger when peeling it from the container 10 (curl portion 11), and temporarily returns the lid material 20A that has been peeled off halfway. It is used to easily fix the lid material 20A when (resealing the opening with the lid material 20A).

The heat-sensitive adhesive 30 is applied thinly, for example, to a thickness of 1 to 30 μm on the outer surface (surface) near the upper end of the container 10. The heat-sensitive adhesive 30 is a type that does not have adhesiveness at room temperature (less than 40 ° C.) and develops adhesiveness when heat of 40 ° C. to 90 ° C. is applied. For example, water, dicyclohexyl phthalate, Synthetic resin (for example, vinyl chloride (vinyl chloride / vinegar copolymer), acrylic, polyurethane, polystyrene, polyester, epoxy, nitrocellulose (nitrated cotton), ethyl cellulose, polyamide, reduced rubber, chlorinated polyolefin, photocurable resin, etc.) A sticky-sustaining type can be used in which the main component is an auxiliary agent (for example, an antioxidant, a lubricant, an antifoaming agent, etc.), ammonia water, and mineral oil. In FIG. 1, the area where the thermal adhesive 30 is applied is shown by a hatching pattern. This also applies to the other examples described below.

As described above, since the knob portion 21 protrudes outward from the peripheral edge of the lid material 20A, the lid material 20A is peeled off halfway to open the upper end of the container 10, and hot water is poured into the container through the opening. When the lid material 20A that has been peeled off is returned to its original position and the opening is closed (resealed) again, it can be bent downward and stacked along the outer surface of the container 10 (FIG. 2). The above-mentioned thermal adhesive 30 is applied to the outer surface range of the container 10 where the knob portion 21 overlaps the outer surface of the container 10 when the knob portion 21 protruding outward from the lid material 20A is bent downward. .. Since the lid material 20A and the container 10 are generally warmed to 40 ° C. or higher by the boiling water poured into the container 10, the heat-sensitive adhesive 30 applied to the outer surface of the container 10 develops adhesiveness, which causes the knob 21 to become sticky. It is adhered to the outer surface of the container 10 and easily fixed (held). Since the force of the lid material 20A to open upward is suppressed by the knob portion 21, the opening of the container 10 is easily resealed by the lid material 20A.

It is not necessary to prepare a separate member (adhesive film, tape, etc.) in order to return the lid material 20A that has been peeled off halfway to the original place and reseal the opening of the container 10. A knob portion 21 having a size (length) that can be overlapped with the outer surface of the container 10 is provided integrally with the lid material 20A, and the heat-sensitive adhesive 30 is applied to the outer surface range of the container 10 where the knob portion 21 overlaps. Since it only needs to be applied, the resealing function of the container 10 can be realized at low cost.

3 to 5 show a second embodiment, FIG. 3 is an enlarged perspective view of the upper part of the container with a lid before resealing the lid material, and FIG. 4 is an upper part of the container with a lid when the lid material is resealed. Enlarged perspective views are shown respectively. FIG. 5 is a partially enlarged cross-sectional view of the lid material provided in the container with a lid according to the second embodiment along the VV line.

The second embodiment is different from the first embodiment in that the knob provided on the lid material is not used for resealing (fixing) the lid material.

An inward arc-shaped (arc-shaped projecting in the direction opposite to the outer edge of the lid 20B) half-cut line 22 near the peripheral edge of the lid 20B, preferably near the peripheral edge of the portion where the knob 21 is provided. Is formed, and a region (half-cut region) extending toward the center of the lid material 20B is partitioned by the half-cut line 22. The half-cut area roughly surrounded by the half-cut line 22 is partially connected to the lid material 20B in the vicinity of the peripheral edge of the lid material 20B (that is, the half-cut area is not a closed area and a joint portion is left). ..

With reference to FIG. 5, the lid material 20B is composed of a paper layer 41 on the front surface side (upper layer) and a sealant layer (for example, PE (polyethylene) layer) 42 on the back surface side (lower layer), and a half formed on the lid material 20B. The cut line 22 is formed only on the paper layer 41 and has a depth that does not reach the sealant layer (PE layer) 42. Further, a release varnish (easy release agent) 43 is applied to the interface (boundary surface) between the paper layer 41 and the sealant layer 42 in the half-cut region roughly surrounded by the half-cut line 22, and the paper layer 41 is applied in the half-cut region. And the sealant layer 42 are not adhered to each other (non-adhesive) or remain temporary adhesive. Therefore, in the half-cut region roughly surrounded by the half-cut line 22, only the paper layer 41 (upper layer sheet) can be turned over while leaving the sealant layer 42 (lower layer sheet) as it is. In the region other than the half-cut region, the paper layer 41 and the sealant layer 42 are adhered to each other and fixed.

With reference to FIG. 4, the paper layer 41 (hereinafter, referred to as “half-cut piece 22A”) in the half-cut region roughly surrounded by the half-cut line 22 is formed while a part of the lid material 20B is connected to the vicinity of the peripheral edge. It is turned over from the lid material 20B and overlapped with the outer surface of the container 10. The heat-sensitive adhesive 30 is applied to the outer surface range of the container 10 on which the half-cut pieces 22A are to be overlapped. When the half-cut piece 22A is turned over from the lid material 20B, hung from the lid material 20B to the container 10, and superposed on the outer surface of the container 10, the adhesiveness developed on the heat-sensitive adhesive 30 by the heat transferred from the container 10 causes. The half-cut piece 22A is adhered to the outer surface of the container 10. The lid 20B allows the opening of the container 10 to be closed again. Since the sealant layer 42 remains even if the half-cut piece 22A is turned over from the lid material 20B, the lid material 20B will not be punctured when the half-cut piece 22A is turned over.

6 to 8 show a third embodiment, FIG. 6 is a perspective view of the container with a lid before resealing the lid material, and FIG. 7 is a perspective view of the container with a lid when the lid material is resealed. ， Each is shown. FIG. 8 is a partially enlarged cross-sectional view of a container (body) 10A constituting the container with a lid of the third embodiment along the line VII-VII of FIG.

With reference to FIG. 6, a substantially rectangular region 25 is partitioned on the outer surface of the container 10A constituting the container 2 with a lid of the third embodiment, and the thermal adhesive 30 is applied in the region 25.

On the outer surface of the container 10A, a fold ruled line 23 located near the upper end opening edge of the container 10A, which defines the upper side of the area 25, and a half-cut line 24, which defines the left and right sides and the lower side of the area 25, are formed. The area 25 is defined on the outer surface of the container 10A by the fold ruled line 23 and the half-cut line 24. As shown in FIG. 6, the half-cut line 24 may be a plurality of short half-cut lines connected by a short connecting portion, or may be a continuous line.

With reference to FIG. 8, the container 10A has a gravure printing layer (for example, urethane, salt and vinegar) 51, a skin layer (for example, LLDPE (linear low density polyethylene)) 52, and a foam layer (for example) from the outer layer to the inner layer. Foamed LLDPE) 53, paper layer 54, water vapor blocking layer (eg MDPE (medium density polyethylene)) 55, barrier layer (eg PET (potylene terephthalate)) 56, and sealant layer (eg MDPE) 57 laminated It consists of a sheet with a structure. This laminated sheet has high heat retention and high physical strength.

The half-cut line 24 is formed from, for example, the gravure printing layer 51 to the foam layer 53, and has a depth that does not reach the paper layer 54. However, the half-cut line 24 may be formed from the gravure printing layer 51 to the paper layer 54 and have a depth that does not reach the water vapor blocking layer 55. A release varnish (release agent) 43 is applied to the interface (boundary surface) between the foam layer 53 and the paper layer 54 in the region 25 surrounded by the fold ruled line 23 and the half-cut line 24. The paper layer 54 is not adhered to each other (not adhered) or is only temporarily adhered. In the regions other than the region 25, the foam layer 53 and the paper layer 54 are adhered to each other and fixed.

With reference to FIG. 7, the upper layer range of the area 25 (from the gravure printing layer 51 to the foam layer 53) (from the gravure printing layer 51 to the foam layer 53) while being connected to the container 10A at the folding ruled line 23 (connecting portion) located near the upper end opening edge of the container 10A. Hereinafter referred to as "half-cut piece 25A") is turned over from the container 10A and superposed on the outer surface (surface) of the lid material 20C. The half-cut piece 25A is hung between the body of the container 10A and the lid material 20C, and the tip portion of the half-cut piece 25A is adhered to the lid material 20C by the heat-sensitive adhesive 30. Since the lid material 20C is pressed by the half-cut piece 25A, the state in which the upper opening of the container 10A is easily resealed by the lid material 20C is maintained. Even if the half-cut piece 25A is turned over from the container 10A, the lower layer (paper layer 54 to the sealant layer 57) of the container 10A remains as it is, so that the container 10A does not have a hole.

In the above-described embodiment, the cylindrical container has been described, but the container is not limited to the cylindrical one, and may be a polygonal cylindrical container, for example, a container having a hexagonal or octagonal cross section.

1, 2, container with lid
10, 10A container
11 Curl part
20A, 20B, 20C Lid material
21 Picking part
22, 24 half-cut line
23 Folded ruled line
22A, 25A half-cut piece
30 Thermal adhesive
43 Peeling varnish

Claims (5)

In a container with a lid provided with a bottomed container and a lid material that is detachably adhered to the upper end opening edge of the bottomed container and closes the upper end opening of the container.
A knob that extends outward is provided on a part of the peripheral edge of the lid material.
A thermal adhesive is applied to the outer surface area of the container on which the knobs are overlapped.
Container with lid. In a container with a lid provided with a bottomed container and a lid material that is detachably adhered to the upper end opening edge of the bottomed container and closes the upper end opening of the container.
The lid material is composed of an upper layer sheet and a lower layer sheet laminated on the back surface side of the upper layer sheet.
A half-cut line for partitioning the half-cut pieces extending in the central direction of the lid material is formed on the upper layer sheet with the joint portion left near the peripheral edge of the lid material.
The upper layer sheet and the lower layer sheet are fixed in the range excluding the above half-cut piece.
A heat-sensitive adhesive is applied to the outer surface area of the container on which the half-cut pieces turned over from the lid material are overlapped.
Container with lid. An easy-release agent is applied to the interface between the upper layer sheet and the lower layer sheet in the range of the half-cut pieces.
The container with a lid according to claim 2. In a container with a lid provided with a bottomed container and a lid material that is detachably adhered to the upper end opening edge of the bottomed container and closes the upper end opening of the container.
The body of the container is composed of an upper layer sheet and a lower layer sheet laminated on the back surface side of the upper layer sheet.
A half-cut line for partitioning the half-cut pieces extending below the body is formed on the upper-layer sheet, leaving a joint near the upper end opening edge of the body of the container.
The upper layer sheet and the lower layer sheet are fixed in the range excluding the half cut piece.
A heat-sensitive adhesive is applied to the surface area of the half-cut piece that is turned over from the body and hung between the body and the surface of the lid material and overlapped with the surface of the lid material.
Container with lid. An easy-release agent is applied to the interface between the upper layer sheet and the lower layer sheet in the range of the half-cut pieces.
The container with a lid according to claim 4.

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