Process for reducing surface melt fracture during extrusion of ethylene polymers
US4552712A · kind A · utility
14Cited by
19References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 3, 1984 |
| Grant date | Nov 12, 1985 |
| Priority date | — |
| Expiry date | Jul 3, 2004 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29K2023/00
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Melt fracture of films made from LLDPE resins is reduced by using a die having a die land region fabricated from stainless steel and wherein the length of the die land to the width of the die gap is about 35:1 to about 60:1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.