Shirred elastic sheet material
US7946765B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 28, 2007 |
| Grant date | May 24, 2011 |
| Priority date | — |
| Expiry date | Mar 15, 2030 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65F1/0006
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A retaining element for use with elastic sheet material is disclosed. In one form, the sheet material can be provided as a bag (100) having first and second sidewalls (102,104). The retaining element can be in the form of an elastic strip attached to one of the sidewalls. The retaining strip (120) can comprise a heat-unstable activatable material such that it can be applied to the bag in a deadened condition wherein the strip is set and subsequently heated to transition to an activated condition wherein the retaining element is elasticized to provide an elasticized article which can have a shirred appearance. The retaining element can have various configurations and can be activated by various methods.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.