B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
18/783, 18/789
B29C 47/00 (2006.01) A61L 15/00 (2006.01) A61L 15/26 (2006.01) A61L 28/00 (2006.01) C08J 5/18 (2006.01)
Patent
CA 1288922
ABSTRACT Polymeric Products and their Manufacture HB polymers, such as copolymers of hydroxy butyric acid And hydroxy valeric acid, are provided as melt extruded films having A thickness of 5 to 200 µm. Sheet materials may consist of such a film or the film may be laminated with other films to increase strength or impermeability. The films are best made by co-extrusion with a thermoplastic that is substantially non-tacky upon solidification. The sheet materials are of particular value as diaper backsheets and ostomy bags. They may include a layer of non-woven material.
524744
Martini Francesco
Perazzo Luigi
Vietto Paolo
Smart & Biggar
W.r. Grace & Co.,-Conn.
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