US 2025/0326554 A1Published application

Easy-open packaging body

AssigneeToyo Seikan Group Holdings, Ltd.

InventorsToshifusa AZUMA, Mizuki TAKEDA

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Abstract

The disclosure relates to a packaging body including a container including a flange portion including a surface seal layer formed on a top surface, and a lid member that is joinable to the flange portion. In the flange portion, a side wall portion extending in a container axial direction is formed on an outer side of an outer peripheral edge of a joining position with the lid member. A resin accumulation composed of the surface seal layer and protruding outward from the outer peripheral edge of the joining position, and the surface seal layer having a small thickness serving as an opening start portion provided on the lower or inner side of the resin accumulation are provided. Thus, an easy-open packaging body that can be easily opened with a small opening force is achieved.

Claims16

Dependent claims

An easy-open packaging body comprising:

a container including a flange portion at a periphery of an opening, and a surface seal layer formed at least on a top surface of the flange portion, the surface seal layer being joinable to the lid member and easy to peel off from a base material of the container;
and
a lid member configured to seal the container by joining to the surface seal layer of the flange portion, wherein
in the flange portion, a side wall portion extending in a container axial direction is formed on an outer side of an outer peripheral edge of a joining position with the lid member, and
the surface seal layer includes a resin accumulation protruding outward from the outer peripheral edge of the joining position, and a surface seal layer having a small thickness serving as an opening start portion on a lower or inner side of the resin accumulation.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 19/254,445Filed 30 Jun 2025
Priority: JP 2023-0006215 Jan 2023
Published: 23 Oct 2025
Term ends: Not estimatedThe source records don’t support an estimate.

Classification6 codes

B65D 77/2024
By applying separate lids or covers , i.e. flexible membrane or foil-like covers: the cover being welded or adhered to the container
B65D 77/2032
Means for opening the cover other than, or in addition to, a pull tab: by peeling or tearing the cover from the container
B65D 77/20
Container closures formed after filling: by applying separate lids or covers , i.e. flexible membrane or foil-like covers
B65D 77/2044
By peeling or tearing the cover from the container: whereby a layer of the container or cover fails, e.g. cohesive failure