Polystyrene foam sheet useful for forming deep drawn articles, a

Details Polystyrene foam sheet useful for forming deep drawn articles, a Polystyrene foam sheet useful for forming deep drawn articles, a

1994-03-18

1994-11-15

Foelak, Morton

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Composite having voids in a component

264321, 264553, 4283179, 4283197, 4283199, 521139, 521146, B32B 326

Patent

active

053646967

ABSTRACT:
A polystyrene foam sheet comprising a polystyrene resin which contains 1 to 15 wt. % of a rubber component having a majority of particle sizes less than about 0.45 microns has been found to be superior for forming deep drawn articles. Optionally one or two films may be extrusion coated or laminated to the foam sheet prior to thermoforming. Also disclosed is a method for thermoforming the foam sheet. Preheat the sheet, clamp the sheet between the matched male and female mold members, move the members into final position while applying a vacuum through both members to both sides of the foamed sheet and then chill formed foam to set a final shape.

REFERENCES:
patent: 3260781 (1966-07-01), Lux et al.
patent: 3338997 (1967-09-01), Tigner
patent: 3531555 (1970-09-01), Tiffin et al.
patent: 4096224 (1978-06-01), Simon et al.
patent: 4214056 (1980-07-01), Lavengood
patent: 4239727 (1980-12-01), Myers et al.
patent: 4359160 (1982-11-01), Myers et al.
patent: 4493922 (1985-01-01), Echte et al.
patent: 4528221 (1985-07-01), Komatsuzaki et al.
patent: 5039714 (1991-08-01), Kasahara et al.

Affiliated with

Also associated with

Rating

Polystyrene foam sheet useful for forming deep drawn articles, a does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Polystyrene foam sheet useful for forming deep drawn articles, a, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Polystyrene foam sheet useful for forming deep drawn articles, a will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1096270