Polymeric foam and method for making the same

Details Polymeric foam and method for making the same Polymeric foam and method for making the same

1975-08-11

1976-12-07

Foelak, Morton

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 336PQ, 264 53, 264DIG5, C08J 928

Patent

active

039961710

ABSTRACT:
A polyethylene or polypropylene foam and a method for its manufacture in which polyethylene or polypropylene powder, is mixed with a liquid component, e.g. mineral oil, to a substantially uniform blend and placed in a container such as a closed mold. The mixture is heated to a temperature at which the polymer flows and is in a substantially liquid state such that the intimately mixed polymer and mineral oil enter into a solution, the solution forming in situ in the container. Thereafter, upon further heating, the mineral oil is caused to undergo a phase change from a liquid to a vapor at its boiling temperature, whereupon the mineral oil acts to expand the polymer into a foam. The temperature to which the solution is heated is maintained to less than the temperature at which the polymer foam collapses due to lowering of its viscosity, thereby ensuring that the foam structure is maintained. The foam thus produced is cooled and removed from the mold.

REFERENCES:
patent: 2927904 (1960-03-01), Cooper
patent: 3856717 (1974-12-01), Theard et al.

Affiliated with

Also associated with

Rating

Polymeric foam and method for making the same does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Polymeric foam and method for making the same, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Polymeric foam and method for making the same will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-378368