Method for processing radiation cross-link thin film foam

Details Method for processing radiation cross-link thin film foam Method for processing radiation cross-link thin film foam

1990-07-12

1992-02-11

Lowe, James

Plastic and nonmetallic article shaping or treating: processes

Carbonizing to form article

Agglomeration or accretion

264 54, B29C 6720

Patent

active

050873954

ABSTRACT:
A foamed thermoplastic resin sheet is produced by a process comprising preheating in a chamber including a conveyor means for continuously conveying a radiation cross-linked thermoplastic resin sheet containing a blowing agent in a horizontally supported state and foaming said sheet in an expansion oven over a hot air blanket while continuously conveying said radiation cross-linked thermoplastic resin sheet in a horizontally supported state while applying a uniform tension across the width of the foamed sheet.

REFERENCES:
patent: 3471604 (1969-10-01), Butcher
patent: 3711584 (1973-01-01), Sagane
patent: 4124344 (1978-11-01), Kiyono et al.
patent: 4213925 (1980-07-01), Kiyono et al.
patent: 4486366 (1984-12-01), Reddy
patent: 4508669 (1985-04-01), Iwai et al.
patent: 4704238 (1987-11-01), Okuyama et al.

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