Process for production of expansion-molded articles in a mold of

Details Process for production of expansion-molded articles in a mold of Process for production of expansion-molded articles in a mold of

1988-02-16

1989-08-29

Anderson, Philip

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

By mechanically introducing gas into material

264 53, 264DIG9, 264DIG13, 264DIG15, 521 60, C08J 922, C08J 914, C08J 918

Patent

active

048615315

ABSTRACT:
The present invention provides a process for production of expansion-molded articles in a mold of a linear low density polyethylene resin which comprises compressing pre-expanded linear low density polyethylene resin beads having two melting points when measured by differential scanning calorimetry and, when the melting point at a low temperature side and the melting point at a high temperature side are designated T.sub.ML and T.sub.MH respectively, between said two melting points and the peak fusion area at said T.sub.ML is designated A.sub.L and the peak fusion area at said T.sub.MH is designated A.sub.H satisfying:

REFERENCES:
patent: 3953558 (1926-04-01), Hatano et al.
patent: 4631159 (1986-12-01), Maeda et al.
patent: 4676939 (1987-06-01), Kuwabara
patent: 4695593 (1987-09-01), Kuwabara et al.
patent: 4704239 (1987-11-01), Yoshimura et al.

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