Process for molding foamed plastics from reaction mixtures invol

Details Process for molding foamed plastics from reaction mixtures invol Process for molding foamed plastics from reaction mixtures invol

1974-09-16

1976-11-09

Anderson, Philip

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

By gas forming or expanding

260 25AZ, 264 455, 264 54, 264328, 264331, 264DIG14, 264DIG83, B29D 2700

Patent

active

039911470

ABSTRACT:
A process for molding foam products substantially free from flaws caused by air bubbles in the foamable reaction mixture wherein a foamable reaction mixture having a viscosity .eta. in cP between 100 cP and 2500 cP is introduced into a mold cavity through an opening in the mold wall and against the wall of the cavity opposite the opening of a mold in which the thickness of the cavity and the thickness s of the resulting molded product adjacent to the opening at the time the mixture is introduced into the cavity is maintained at 0.5 mm to 15 mm under conditions whereby the radial distribution rate w.sub.radial in m/sec., .eta. in cP and s combine to satisfy the relation ##EQU1##

REFERENCES:
patent: 3660548 (1972-05-01), Komada et al.
patent: 3745203 (1973-07-01), Harper
patent: 3846524 (1924-11-01), Elmore et al.
mobay Bulletins, "The Rolling Showcase for Engineering Plastics," Pittsburgh, Pa., Mobay Chemical Co., (1968), pp. 1-8.

Affiliated with

Also associated with

Rating

Process for molding foamed plastics from reaction mixtures invol does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for molding foamed plastics from reaction mixtures invol, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for molding foamed plastics from reaction mixtures invol will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1725717