Packaging container

Patent metadata

Field	Value
Publication number	US-10759577-B2
Application number	US-201715853589-A
Country	US
Kind code	B2
Filing date	Dec 22, 2017
Priority date	Jul 13, 2015
Publication date	Sep 1, 2020
Grant date	Sep 1, 2020

Abstract

A packaging container that can be easily disassembled is provided at low cost. The packaging container is formed by a laminate including a base layer being folded into a box shape and each end thereof being overlapped to be sealed with each other, the laminate having a fragile part formed thereon. The laminate further has, for example, a film layer, and includes, as a fragile part, a first scored part formed on a base layer and a second scored part formed on a film in a 2.0-mm-wide band area with the first scored part being a widthwise center.

First claim

What is claimed is:

1. A packaging container formed by folding a laminate including a base layer into a box shape and overlapping to seal end parts thereof, wherein a fragile part is formed in the laminate, wherein a first scored part is formed on the base layer as the fragile part, wherein the laminate has a film layer on an inner side of the packaging container relative to the base layer, and a second scored part is further formed as the fragile part on the film layer in a 2.0-mm-wide band area with the first scored part being a widthwise center in a plan view of the laminate, wherein an unscored length is below 2.0 mm and a scoring ratio is below 60% when: a scored length is defined as a length of the second scored part along an extending direction of a line on which a plurality of scorings are intermittently arranged; the unscored length is defined as a distance between two scorings; and the scoring ratio is defined as the scored length×100/(the scored length+the unscored length).

2. The packaging container of claim 1 , wherein the base layer is paper, and a moisture percentage of the paper is below 9%.

3. The packaging container of claim 1 , wherein the first scored part is formed by a laser beam machining process or a semi-punching process and full-punching process by use of a blade die.

4. The packaging container of claim 1 , wherein the film layer has a gas barrier layer formed by provision of an inorganic compound layer on a plastic film.

5. The packaging container of claim 1 , wherein the film layer has a gas barrier layer made of a metal foil.

6. The packaging container of claim 1 , wherein the second scored part is formed by a laser beam machining process or a semi-punching process or full-punching process by use of a blade die.

7. The packaging container of claim 1 , wherein an extending direction of each scoring of the second scored parts is formed vertically to an extending direction of the line.

Assignees

• Toppan Printing Co Ltd

Inventors

• Sasaki Noriyuki
• Matsumoto Tomoko

Classifications

• B32B7/12 Primary

  using interposed adhesives or interposed materials with bonding properties · CPC title

• B32B2439/62

  Boxes, cartons, cases · CPC title

• B32B27/10

  of paper or cardboard · CPC title

• B32B2307/31

  Heat sealable · CPC title

• B32B3/266

  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 · CPC title