Lownoise stretch wrapping process
US6070394A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 2, 1998 |
| Grant date | Jun 6, 2000 |
| Priority date | — |
| Expiry date | Sep 2, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2323/04
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Disclosed herein is a stretch wrapping process wherein a roll of film is unwound and stretched, at a speed up to about 70 meters per minute, and the film is wrapped about the girth of a unitized plurality of goods, with the overlapping layers of film being held together by cling force. The film used in the present process is produced from a composition comprising about 85 to about 99 weight percent of a polymeric ethylenic containing component having a density no greater than 0.94 g/cc, and about 1 to about 15 weight percent of a propylene polymer comprising 0 to about 40 weight percent olefin comonomer units having 2 to 10 carbon atoms, and from about 60 to about 100 weight percent propylene.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.