Process for producing a rush-like structure

Details Process for producing a rush-like structure Process for producing a rush-like structure

1978-06-30

1981-02-03

Woo, Jay H.

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

By gas forming or expanding

260 296AN, 264 53, 264206, 264211, 264234, 428376, B29H 720

Patent

active

042488125

ABSTRACT:
A process for producing a synthetic rush-like structure which comprises causing an acrylonitrile polymer composition in a substantially melted state (Polymer A or B or C) to flow down towards a spinning orifice; adjusting the pressure of the system in which the melt just before the orifice is present to within a specific range; extruding the melt to form a foamed product; and subjecting the foamed extrudate to heat treatment, thereby obtaining a synthetic rush-like structure resembling the natural rush plant in outer skin structure and internal structure and having excellent sensory and practical properties.

REFERENCES:
patent: 3774387 (1973-11-01), Woodell
patent: 3873508 (1975-03-01), Turner
patent: 3896204 (1975-07-01), Goodman et al.
patent: 3984601 (1976-10-01), Blickenstaff
patent: 3991153 (1976-11-01), Klausner et al.
patent: 4049605 (1977-09-01), Kobashi et al.
patent: 4062857 (1977-12-01), Kobashi et al.
patent: 4108818 (1978-08-01), Odawaua et al.

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