# US 10,661,962 B2 · Peel-openable package and opening structure for peel-openable package

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- Number: US 10,661,962 B2
- Document ID: US10661962B2
- Status: Granted
- Kind: B2
- Application number: 15/662,656
- Filed: 2017-07-28
- Published: 2017-11-09
- Granted: 2020-05-26
- Earliest claimed: 2015-01-30
- Assignees: Future Labo Co, Ltd.
- Applicants: Future Labo Co., Ltd.
- Inventors: Miku Hashimoto
- Web page: https://patentgrep.com/patent/US10661962B2

## CPC

- B65D 77/2024: {the cover being welded or adhered to the container}
- B32B 1/00: Layered products having a non-planar shape
- B32B 3/266: {characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12}
- B32B 7/02: Physical, chemical or physicochemical properties
- B32B 7/06: permitting easy separation
- B32B 7/12: using interposed adhesives or interposed materials with bonding properties
- B32B 15/085: comprising polyolefins
- B32B 15/09: comprising polyesters
- B32B 15/14: next to a fibrous or filamentary layer
- B32B 23/042: {of metal}
- B32B 23/06: of paper or cardboard
- B32B 23/08: of synthetic resin
- B32B 23/20: comprising esters
- B32B 27/06: as the main or only constituent of a layer, {which is} next to another layer of {the same or of} a {different material (next to a layer of a particular substance B32B9/045; next to a bituminous or tarry layer B32B11/046; next to a water setting substance layer B32B13/12; next to a metal layer B32B15/08; next to a glass layer B32B17/10; next to a layer formed of natural mineral fibres or particles B32B19/045; next to a wood layer B32B21/08; next to a cellulosic plastic layer B32B23/08; next to a natural or synthetic rubber layer B32B25/08)}
- B32B 27/08: of synthetic resin
- B32B 27/10: of paper or cardboard
- B32B 27/32: comprising polyolefins {(comprising vinyl (co)polymers or acrylic (co)polymers B32B27/30)}
- B32B 27/36: comprising polyesters
- B32B 27/365: {comprising polycarbonates}
- B32B 29/005: {next to another layer of paper or cardboard layer}
- B65D 75/585: {the tear-lines being broken by deformation or bending}
- B65D 77/2032: {by peeling or tearing the cover from the container}
- B65D 81/3294: {Thermoformed trays or the like with a plurality of recesses for different materials located in different recesses}
- B29D 22/00: Producing hollow articles (tubular articles B29D23/00; pneumatic tyres B29D30/00)
- B32B 27/00: Layered products comprising {a layer of} synthetic resin {(fibrous or filamentary layer made of a synthetic resin B32B5/02; particulate layer made of a synthetic resin B32B5/16; foamed layer made of a synthetic resin B32B5/18)}
- B32B 2307/518: bi-axially
- B32B 2307/7163: Biodegradable
- B32B 2307/732: Dimensional properties
- B32B 2307/748: Releasability
- B32B 2439/40: Closed containers
- B65D 2577/2066: Means on, or attached to, container flange facilitating opening, e.g. non-bonding region, cut-out
- B65D: CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B29D: PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE (making granules B29B9/00; making preforms B29B11/00)

## Abstract

A peel-openable package includes a lid. The led includes a sheet member located at a position corresponding to a container portion of a package main body, and a film member bonded to a surface of the sheet member. Cutouts running in a thickness direction of the members and are formed in a peel region defined in a foldable portion of the members. The cutouts and cross a longitudinal direction L and are away from each other by a predetermined interval extending in the longitudinal direction. Facing surfaces of the sheet member and the film member, which are in the peel region corresponding to an area between the cutouts, are bonded together so as to be peelable from each other by an adhesive layer.

## Claims

### Claim 1

A peel-openable package, comprising:
a package main body having a content enclosed therein, at least a part of the package main body including:
an inner member located at a position corresponding to an inner portion of the package main body; and
an outer member bonded to a surface of the inner member, the surface corresponding to an outer portion of the package main body;
wherein:
the inner member and the outer member have a foldable portion in an area thereof where the inner member and the outer member are folded to be bonded together;
the foldable portion includes a peel region where the inner member and the outer member are allowed to be peeled off from each other thereby forming a through-hole that passes through the inner member and the outer member when the inner member and the outer member are folded to be bonded together;
the foldable portion includes a cutout, in the peel region, in each of the inner member and the outer member, the cutouts extending so as to cross a direction corresponding to a folding direction in which the foldable portion is folded, and the cutouts each being formed into the through-hole passing in a thickness direction through the inner member and the outer member when the foldable portion is folded;
the cutout formed in the inner member and the cutout formed in the outer member are away from each other by a predetermined interval, the predetermined interval extends in the direction corresponding to the folding direction, and the cutouts formed in the inner member and the outer member comprise a stair-shaped inner wall of the through-hole;
facing surfaces of the inner member and the outer member facing each other are bonded together by an adhesive layer provided between the facing surfaces such that the facing surfaces are peelable from each other, the facing faces being defined in at least the peel region;
a sealing member is provided between the facing surfaces, of the inner member and the outer member, defined in the peel region, the sealing member being broken when the inner member is folded at a predetermined angle or greater; and
the sealing member is located on a surface of the inner member that is to be a peak-side surface when the inner member is folded, and covers the cutout formed in the inner member.

### Claim 2 (depends on 1)

The peel-openable package according to claim 1, wherein the inner member is thicker than the outer member.

### Claim 3 (depends on 1)

The peel-openable package according to claim 1, wherein the adhesive layer is provided between the facing surfaces in the peel region, in positional correspondence with an area between the cutouts formed in the inner member and the outer member.

### Claim 4 (depends on 1)

The peel-openable package according to claim 1, wherein the inner member and the outer member are not allowed to be peeled off from each other in a region other than the peel region.

### Claim 5 (depends on 1)

The peel-openable package according to claim 1, wherein the cutouts each have a width shorter than a width of the inner member.

### Claim 6 (depends on 1)

The peel-openable package according to claim 1, wherein the predetermined interval between the cutouts formed in the inner member and the outer member has a length that is about 0.5 times to about 100 times a thickness of the inner member.

### Claim 7 (depends on 1)

The peel-openable package according to claim 1, wherein one of the cutouts formed in the inner member and the outer member is longer than the other of the cutouts.

### Claim 8 (depends on 1)

The peel-openable package according to claim 1, wherein the cutouts formed in the inner member and the outer member have the same shape as each other, or different shapes from each other, as seen in the thickness direction.

### Claim 9 (depends on 1)

The peel-openable package according to claim 1, wherein the cutouts each include a plurality of holes running in the thickness direction, the plurality of holes being provided in a perforation extending so as to cross the direction corresponding to the folding direction.

### Claim 10 (depends on 1)

The peel-openable package according to claim 1, wherein a folding line assisting folding of the inner member is provided between two ends of the inner member in a width direction and two ends of the cutouts in the width direction.

### Claim 11 (depends on 1)

The peel-openable package according to claim 1, wherein the sealing member includes a sealing film or a coated sealing layer having a thickness smaller than a thickness of the outer member.