Process for producing an expansion-molded article

Details Process for producing an expansion-molded article Process for producing an expansion-molded article

1997-12-19

1999-10-19

Kuhns, Allan R.

Plastic and nonmetallic article shaping or treating: processes

Forming articles by uniting randomly associated particles

Autogenously or by activation of dry coated particles

264 51, 264101, 264321, B29C 4322

Patent

active

059684305

ABSTRACT:
Disclosed herein is a method for continuously producing an expansion-molded article, comprising feeding foamed particles between a belt continuously traveling along the upper surface within a passageway defined by structural members and having a rectangular form in section and a belt continuously traveling along the lower surface within the passageway, and then causing the foamed particles to successively pass through a super heated steam-feeding region and a cooling region within the passageway. The foamed particles used are foamed particles of a polyolefin resin, in which a recovery factor from compression defined by the equation (1):

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