Film manufacturing method, film manufacturing device, and jig
US9656410B2 · kind B2 · utility
0Cited by
15References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 28, 2013 |
| Grant date | May 23, 2017 |
| Priority date | — |
| Expiry date | Nov 28, 2033 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2007/008
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A film is formed by extruding a resin from a lip opening (3) of a multilayer extrusion die (1) in a state in which a rectifying jig (10) does not cover the lip opening (3) but covers a seal part (6) while being located adjacent to each end in a longer side direction of the lip opening (3).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.