Plastic bag making method and apparatus
US8715148B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 25, 2009 |
| Grant date | May 6, 2014 |
| Priority date | — |
| Expiry date | Nov 17, 2030 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB31B2160/10
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Problems concerning adhesion strength and aging time are eliminated in plastic-bag production in which a strip sheet is bonded with an adhesive and a handle is formed from the strip sheet on an outer surface of a plastic bag. Provided is a bag-making machine in which a strip sheet (17) and a web material are disposed so as to face each other and are pressed, with a high-adhesion adhesive (21) and another adhesive (25) interposed therebetween. The strip sheet (17) is provisionally fixed to the web material with the latter adhesive (25). This web material after the provisional fixing is wound on a roll, and a plastic bag is produced after lapse of an aging time for the high-adhesion adhesive (21). In this machine, the web material is supplied from the roll, and a plastic bag is produced from the web material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.