| 摘要 |
PURPOSE:To prepare a stretched polyethylene article having high modulus of elasticity and high strength, by stretching a film comprising a composition, which is prepared by compounding an aliphatic hydrocarbon derivative having specific values with polyethylene having specific values, in a stretching ratio of at least 20 times or more. CONSTITUTION:A mixture consisting of 15-97wt% of polyethylene with intrinsic viscosity [eta] of 1.5-5.0dl/g and 85-3wt% of an aliphatic hydrocarbon derivative (capric acid, lauric acid or stearic acid) with a m.p. of 130 deg.C or more is melted and kneaded by a screw extruder and extruded from the die of said extruder to form a non-stretched extrudate which is, in turn, subsequently stretched in a stretching ratio of 20 times. Because the obtained stretched polyethylene article has high tensile strength and high modulus of elasticity, it is utilized in the field of a fiber and in various reinforcing material requiring a light wt. |
