B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
18/783
B29C 47/06 (2006.01) B29C 47/56 (2006.01) B32B 25/08 (2006.01) B32B 27/28 (2006.01) B32B 27/30 (2006.01) B32B 27/36 (2006.01) B32B 27/40 (2006.01) B29C 43/24 (2006.01)
Patent
CA 1292349
MN.3450 MULTILAYER POLYMERIC COEXTRUDED SLABS AND STRUCTURAL SHAPES AND PROCESS FOR OBTAINING THEM ABSTRACT OF DISCLOSURE Multilayer polymeric coextruded slabs and structural shapes obtained by contemporaneous extrusion of different polymers in a single extrusion head wherein at least one of the different layers consists of a lamina of a vinyl-aromatic polymer containing up to 20% by weight of an ethylenically unsaturated nitrile. The present invention relates to multilayer polymeric coextruded slabs and structural shapes and to the process for obtaining them. More particularly, the present invention relates to multilayer polymeric coextruded slabs and structural shapes wherein the adhesion is performed by coupling to the polymeric layers a sheet of a vinyl-aromatic polymer containing an ethylenically unsaturated nitrile.
519896
Biglione Gianfranco
Fasulo Gian Claudio
Macrae & Co.
Montedipe S.p.a.
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