Apparatus for stretching plastic webs
US4336638A · kind A · utility
15Cited by
12References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 17, 1978 |
| Grant date | Jun 29, 1982 |
| Priority date | — |
| Expiry date | Oct 17, 1998 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2028/00
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An apparatus is afforded for transversely stretching a continuously advancing flexible web between a pair of opposed banks of tranversely-spaced pressure elements, one of which banks is stationary and whose elements have slide surfaces, the margins of the web being restrained to prevent substantial inward movement of said margins.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.