B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
18/1041, 154/140
B29C 55/10 (2006.01) B32B 27/08 (2006.01) B32B 27/32 (2006.01)
Patent
CA 1225809
ABSTRACT AE 3504 The invention accords to a laminate at least consisting of a first layer from a mixture of at least a propylene polymer and an ethylene- vinylalcohol copolymer and a second layer from at least one propylene polymer, the first layer at least consisting of a mixture of 60-99 parts by weight of a substantially crystalline propylene polymer and 1-40 parts by weight of an ethylene-vinylalcohol copolymer, the second layer at least consisting of a substantially crystalline propylene polymer, the said ethylene-vinylalcohol copolymer having a melting tem- perature at atmospheric pressure which is at most equal to and not more than 30 K lower than the melting temperature at atmospheric pressure of the one of the substantially crystalline propylene polymers used having the highest melting temperature, and the laminate having been subjected to multi-axial stretching to a degree of at least twice in at least 2 directions at a temperature which at most equals the melting tem- perature of the one of the substantially crystalline propylene polymers used having the highest melting temperature and to a process for pre- paring such a laminate.
464247
Burlet Rudolf J.h.
Lemstra Pieter J.
Meyer Henricus E.h.
Fetherstonhaugh & Co.
Stamicarbon B.v. (licensing Subsidiary Of Dsm)
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