| 摘要 |
PURPOSE:To enhance mechanical properties of a resin composition by orienting or rolling a shape imparter of resin composition containing low melting point components in a temperature of more than the temperature of transition area or less than rubber-type area and then cooling down quickly and orienting or rolling in a temperature of less than that of transition area. CONSTITUTION:A resin composition containing at least one of low melting point components is primarily oriented as a shape imparter of film, fiber material, etc. This process is carried out in a temperature more than that of transfer area of resin composition containing low-melting component and less than that of rubber-type area. The temperature of transfer area means the temperature of a range in which a resin composition turns from a state of glass into a state of rubber. Next, the primary orienting substance is cooled down in a quickly lowered temperature down to less than transfer area, before relaxation of stress is completed, retaining the substance to be oriented. By said process, resin composition can be cool-oriented without phase separation of whiting. Next, the secondary orientation is carried out to get oriented resin body, film or fiber type, etc. This is a cold orientation in a temperature less than that of transfer area.
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