Plastic bag making apparatus
US9662852B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 11, 2014 |
| Grant date | May 30, 2017 |
| Priority date | — |
| Expiry date | Feb 9, 2036 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB31B2160/20
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A first body of fastener material is joined to a first web of panel material while a second body of fastener material is joined to a second web of panel material. The first and second bodies of fastener material are interposed between the first and second webs of panel material and aligned with each other after the first and second webs of panel material are superposed with each other. A third body of fastener material is joined to a web of side gusset material to be interposed between the first and second bodies of fastener material after the first and second webs of panel material are superposed with each other, the first and second bodies of fastener material being aligned with the third body of fastener material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.