Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Including a second component containing structurally defined...
Patent
1993-10-15
1995-09-19
Nakarani, D. S.
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Including a second component containing structurally defined...
428331, 428336, 428516, 428910, B32B 2732, B32B 3128, B32B 3130
Patent
active
054514550
ABSTRACT:
A multilayered, highly transparent, biaxially oriented, polypropylene film having excellent twist properties, which is particularly suited for twist wrapping comprising a base layer which contains about 70 to about 95% by weight polypropylene and about 5 to about 30% by weight based on the layer of a low-molecular hydrocarbon resin having a softening point of about 130 to about 180.degree. C., and at least one additional layer which optionally comprises an anti-blocking agent having an average particle size of about 2 to about 5 .mu.m and optionally further comprises a polydimethylsiloxane. The films have high mechanical strength values, which are about the same both in the longitudinal and in the transverse directions, and a balanced orientation. A process for producing the film is also provided.
REFERENCES:
patent: 4595625 (1986-06-01), Crass et al.
patent: 4786533 (1988-11-01), Crass et al.
patent: 4921749 (1990-05-01), Bossaert et al.
Murschall Ursula
Peiffer Herbert
Schloegl Gunter
Hoechst Aktiengesellschaft
Nakarani D. S.
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