Rigid-foam plastic mold and method of preparation

Details Rigid-foam plastic mold and method of preparation Rigid-foam plastic mold and method of preparation

1983-04-25

1985-09-03

Anderson, Philip

Static molds

Including removable or movable liner

156245, 1563082, 1563096, 249115, 249117, 249134, 249160, 264 455, 264219, 264321, 264337, 264338, 264DIG83, 264DIG66, 425 89, 425543, 425817R, B29D 2700

Patent

active

045387877

ABSTRACT:
An inexpensive, cellular plastic mold and method of preparation, wherein the plastic mold comprises male and female mold elements which define a mold cavity therebetween, each of the elements comprising a rigid thermoplastic foam or cellular board material having a smooth, integral, solid layer of a plastic material forming the facing surface of the mold cavity and a relatively thick, solid, supporting layer of a plastic material forming the back surface of the mold elements.

REFERENCES:
patent: 2722719 (1955-11-01), Altstadter
patent: 3423488 (1969-01-01), Bowser
patent: 3490577 (1970-01-01), Grikscheit
patent: 3515779 (1970-06-01), Jones
patent: 3525783 (1970-08-01), Prikkel, III
patent: 3544675 (1970-12-01), Belle Isle
patent: 3723584 (1973-03-01), Nussbaum
patent: 3723585 (1973-03-01), Nussbaum
patent: 3789100 (1974-01-01), Kropscott et al.
patent: 4055613 (1977-10-01), Kapral
patent: 4125351 (1978-11-01), Alfter et al.
patent: 4265850 (1981-05-01), Coulon et al.
patent: 4419307 (1983-12-01), Kohara et al.

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