Method for forming a container blank including a seal
US7731645B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 3, 2005 |
| Grant date | Jun 8, 2010 |
| Priority date | — |
| Expiry date | Jul 11, 2025 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB31B2160/20
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The preset invention relates to a method, use of the method and a device for making a seal in a portion of a material web. The material web includes a first elongate section with a first number of layers of material and a second elongate section with a second number of layers of material, at least one of the layers of material being included in both the first and the second section, the portion having an extent that intersects a transition from the first section to the second section of the material web, the method including connecting, in the portion, opposite surfaces of the layers of material of the material web to each other. The method including forming ridges and valleys in the portion, and orienting the ridges and valleys in such a manner that they have an extent intersecting the transition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.