Oriented multi-layer polypropylene structure and a process...

Details Oriented multi-layer polypropylene structure and a process... Oriented multi-layer polypropylene structure and a process...

B - Operations, Transporting

29

C

18/1039, 18/783

B29C 47/06 (2006.01) B32B 27/32 (2006.01)

Patent

CA 1193411

AN ORIENTED MULTI-LAYER POLYPROPYLENE STRUCTURE AND A PROCESS OF PREPARING THE SAME ABSTRACT An oriented multi-layer polypropylene film structure having surface-modifying agents on the surface thereof and is produced by coextruding and orienting (a) a base layer comprising polypropylene of comparatively high stereoregularity, the precursor resin of which contains an amide of a water-insoluble monocarboxylic acid having from 8 to 24 carbon atoms, or a mixture of said amides; and (b) a skin layer comprising a polyolefin of comparatively low stereoregularity on at least one surface of (a), said skin layer containing a combination of finely divided silica and a silicone oil, whereby at least some of the amide of (a) migrates to the surface of (b).

442338

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