Gating for production of rigid polyurethane foam

Details Gating for production of rigid polyurethane foam Gating for production of rigid polyurethane foam

1996-05-08

1998-05-19

Kuhns, Allan R.

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

Composite article making

264 466, 26432812, B29C 4406, B29C 4412

Patent

active

057531552

ABSTRACT:
The present invention is directed to an improved method for preparing a product by introducing a rigid polyurethane foam formulation into a cavity defined by two spaced apart formed sheets and allowing the formulation to foam. In one embodiment, the improvement resides in providing at least one of the sheets with a portion having the shape of a gate of the type used in polyurethane reaction injection molding and introducing the formulation through that gate so that the formulation enters the cavity as a laminar stream.

REFERENCES:
patent: 3991147 (1976-11-01), Knipp et al.
patent: 4204612 (1980-05-01), Schrader et al.
patent: 4303728 (1981-12-01), Houdek et al.
patent: 4379103 (1983-04-01), Doerfling
patent: 4419307 (1983-12-01), Kohara et al.

Affiliated with

Also associated with

Rating

Gating for production of rigid polyurethane foam does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Gating for production of rigid polyurethane foam, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Gating for production of rigid polyurethane foam will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1849852