发明名称 Laminates on the basis of polypropylene and process for preparing such laminates.
摘要 <p>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 temperature at atmospheric pressure which is at most equal to and not more than 30 K lower then 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 temperature of the one of the substantially crystalline propylene polymers used having the highest melting temperature and to a process for preparing such a laminate.</p>
申请公布号 EP0142183(A1) 申请公布日期 1985.05.22
申请号 EP19840201370 申请日期 1984.09.26
申请人 STAMICARBON B.V. 发明人 LEMSTRA, PIETER JAN;MEYER, HENRICUS EDUARD HUBERTUS;BURLET, RUDOLF JOHANNES HUBERTUS
分类号 B32B27/28;B29C55/10;B29K23/00;B32B27/08;B32B27/32;(IPC1-7):B32B27/08 主分类号 B32B27/28
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