Patent ID: 7205358
Filing Date: 2007-04-17
Classification: B29C,B29K,B29L

Abstract:
1. An extruded ethylene copolymer obtained by a method comprising extruding an ethylene copolymer of ethylene and an α-olefin having 4 to 20 carbon atoms under conditions satisfying the following condition 4, and obtaining the extrudate, wherein an ethylene copolymer of ethylene and an α-olefin having 4 to 20 carbon atoms is an ethylene copolymer having a melt flow rate (MFR) and melt tension (MT) that satisfy the following conditions 1 to 3 when the ethylene copolymer is kneaded by using twin roll mill: (a) Condition 1 the melt flow rate (MFR, unit: g/10 min.) is from 0.01 to 200; (b) Condition 2 the melt flow rate (MFR) and melt tension (MT, unit: cN) at 190° C. satisfy the following (1): (c) Condition 3 the melt flow rate (MFR) and intrinsic viscosity ([η], unit: dl/g) satisfy the following (2): (d) Condition 4 the melt flow rate (MFR) of the copolymer and specific energy for extruding ethylene copolymer(W, unit: kw·hr/kg) satisfy the following (3):