| 摘要 |
<p>PURPOSE:To increase the impact resistance in a low temperature range by blending an anti-impact modifier (a mixture of chlorinated polyethylene and acrylate-group elastomer) with a mixture of post-chlorinated polyvinyl chloride and polyvinyl chloride by a specified ratio. CONSTITUTION:A spiral tube is composed of a resin formation wherein 14-17 pts.wt. of a mixture of 35-45wt.% of chlorinated polyethylene and 65-55wt.% of acrylate-group elastomer is blended as an anti-impact modifier, with 100 pts.wt. of a mixture of 80-90wt.% of post-chlorinated polyvinyl chloride and 20-10wt.% of polyvinyl chloride. Besides, the spiral tube has a forked shape and an inserting section 1, at one side edge, which has drawing-out-preventing sections 11 provided in a pair facing each other at the inner edges of an opening. A sashlike profile (MP) 5 having a hook section 2 which is hooked and checked by inserting into the inserting section 1 in a slidable state is made out of synthetic resin by profile extrusion. And, the MP 3 is wound into a spiral shape, and the inserting section 1 and hook section 2 adjoining each other are joined to form a tube.</p> |
