Japan Polychem Corporation

Toshimitsu Hasegawa

Akihiko Egashira

Yoshinobu Nagaoka

Toru Tagawa

Tomokazu Hirose

Hiroshi Kuzui

Kazumasa Fujimura

Osamu Akaike

Asami Hirashima

Propylene resin sheet for thermoforming and process for preparing it

Disclosed is a olefin resin composition comprising a propylene resin (PP) and an ethylene resin (PE) at a PP:PE mixing ratio of 97 to 60:3 to 40 by weight, the propylene resin and the ethylene resin having such dynamic melt viscoelasticity that the PE to PP viscosity ratio, i.e., .eta.r=.eta.PE/.eta.PP, is more than or equal to 0.1 and less than 1 at 1 rad/sec and more than or equal to 0.70 at 100 rad/sec and that the difference of modulus of melt elasticity between PP and PE, i.e., .DELTA.G'=GPP-GPE, is 10000 Pa or more; an olefin sheet comprising the olefin resin composition; and an olefin resin laminated sheet having a surface layer and an intermediate layer in which the intermediate layer comprises the olefin resin composition.

Olefin resin composition and sheets

Disclosed is a composite olefin resin laminated sheet comprising a surface layer and an intermediate layer, wherein the surface layer comprises an olefin resin composite material having a melt flow rate of not higher than 20 g/10 min and a density of 1.00 to 1.90 g/cm.sup.3, and the intermediate layer comprising (1) a composite olefin resin composition comprising 100 parts by weight of an olefin resin composite material having a melt flow rate of not higher than 20 g/10 min and a density of 1.00 to 1.90 g/cm.sup.3 and 0.01 to 10 parts by weight of polytetrafluoroethylene or (2) an olefin resin composition comprising 100 parts by weight of an olefin resin having a melt flow rate of 0.3 to 20 g/10 min and a density of not less than 0.890 g/cm.sup.3 and 0.01 to 10 parts by weight of polytetrafluoroethylene.

Composite olefin resin laminated sheet

Growing community of inventors

Mie, Japan

Toshimitsu Hasegawa