Method of manufacturing foam beads

Details Method of manufacturing foam beads Method of manufacturing foam beads

1994-08-12

1996-01-02

Kuhns, Allan R.

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

By gas forming or expanding

264 51, 521 56, 521 60, C08J 9228

Patent

active

054805996

ABSTRACT:
A continuous process for manufacturing foam beads using a simple apparatus, wherein the expansion agent can be easily recycled. Polymer particles and a dispersing medium are fed continuously to an unstirred mass transfer column having a high length to diameter ratio which is operated under pressure. The polymer particles and dispersing medium are subjected to thermal processing under pressure in the mass transfer column, and the resulting dispersion is sprayed into a low pressure space causing the polymer particles to expand. Accordingly, foam beads of constant quality and a uniform cell diameter and a uniform degree of expansion are manufactured without costly process means.

REFERENCES:
patent: 2829177 (1958-04-01), Lindemann
patent: 2929106 (1960-03-01), Snow
patent: 3086885 (1963-04-01), John
patent: 3089857 (1963-05-01), Pottenger
patent: 3577360 (1971-05-01), Immel
patent: 3914360 (1975-10-01), Gunderman et al.
patent: 3953558 (1976-04-01), Hatano et al.
patent: 4379859 (1983-04-01), Hirosawa et al.
patent: 4448901 (1984-05-01), Senda et al.
patent: 4513106 (1985-04-01), Edgren et al.
patent: 4560705 (1985-12-01), Harrison
patent: 4602047 (1986-07-01), Endo et al.
patent: 4622346 (1986-11-01), DiGiulio
patent: 4627947 (1986-12-01), Voss
patent: 4810440 (1989-03-01), Yoshida et al.
patent: 5122545 (1992-06-01), Kuwabara et al.
Database WPIL, Derwent Publications Ltd., AN 85-253499, JP-A-60 168 610, Sep. 2, 1985.

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