Easy-open container, manufacturing method thereof and manufacturing device thereof
US8608895B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 30, 2006 |
| Grant date | Dec 17, 2013 |
| Priority date | — |
| Expiry date | Jan 14, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/1352
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
In manufacturing an easy-open container (1), a flange (25) of a container body (2) and a lid (3) are heat-sealed, where a circular sealing board (7) having a curved surface on an inner circumferential edge and an inclined surface on an outer circumferential edge side is pressed onto an upper side of the flange (25) to form a swelling gathered resin part (6) formed of respective resin components of a surface layer (21) of the container body (2), a subsurface layer (22) adjacent to the surface layer (21) and a seal layer (31) of the lid (3), while heat-sealing the surface layer (21) of the container body (2) and the seal layer (31) of the lid (3). With the arrangement, the easy-open container (1) having both a high sealing performance and an easy-open performance can be provided with low cost.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.