Environmentally friendly pinch bottom bag assembly and method of making
US5529396A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 10, 1993 |
| Grant date | Jun 25, 1996 |
| Priority date | — |
| Expiry date | Nov 10, 2013 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D2565/385
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method of making a factory end for a bag assembly, in which a removable plastic bag will be contained within a protective outer bag, includes steps of providing a tube assembly having a plastic inner tube within an outer tube; sealing one end of the plastic inner tube so as to be closed at said one end; and closing the outer tube about the closed one end of the inner tube in such a manner that no plastic material from said inner tube is permanently affixed to the outer tube, whereby the outer tube may be efficiently recycled or incinerated after it is separated from the inner tube by a consumer. The bag assembly itself is disclosed as a separate aspect of the invention. Methods for making the tube assemblies are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.