METHOD FOR PRODUCING CROSS-LINKED POLYETHYLENE- BASED RESIN EXPANDED BEADS
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United States of America Patent
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Jan 14, 2016
app pub date -
Jul 6, 2015
filing date -
Jul 9, 2014
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Abstract
A method for producing cross-linked polyethylene resin expanded beads, including dispersing polyethylene resin particles containing a halogen-containing flame retardant in a dispersing medium in an autoclave, impregnating the dispersed resin particles with an organic peroxide and cross-linking the polyethylene resin therewith at a specific temperature range determined by the melting point of the polyethylene resin and by melting point or glass transition temperature of the flame retardant, impregnating the dispersed resin particles with a blowing agent, and then foaming and expanding the resulting cross-linked polyethylene-based resin particles.
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