| 摘要 |
A vinyl chloride resin composition to be used for extrusion molding whereby the cross-sectional shape of a molded product is continuously changed, said composition comprising 100 parts by weight of a vinyl chloride homopolymer, from 20 to 200 parts by weight of a plasticizer, and from 5 to 30 parts by weight of an acrylic resin having a weight average molecular weight of at least 1,500,000 and having a maximum draft ratio (i.e. when the vinyl chloride resin composition is extruded from an orifice having a diameter of 1 mm and a length of 20 mm at a cylinder temperature of 170 DEG C. at a shear rate of 1.2x102s-1, and the extruded filamentous composition is taken off at an increasing speed, a ratio of the take-off speed to the extrusion speed immediately before breakage of the filamentous composition) of at least 7.
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