Method and apparatus for extruding a thermoplastic plastics...

Details Method and apparatus for extruding a thermoplastic plastics... Method and apparatus for extruding a thermoplastic plastics...

C - Chemistry, Metallurgy

08

J

18/666

C08J 9/04 (2006.01) B29C 44/34 (2006.01) B29C 47/36 (2006.01) C08J 9/00 (2006.01) C08J 9/12 (2006.01)

Patent

CA 2024814

A method of producing a foamed thermoplastic plastics material wherein the plastics material is mixed with a pulverulent nucleating agent and is then fused in an extrusion device. A gaseous nucleating agent, generally nitrogen, is then injected into the fused mixture in an amount of from about 0.1% to 0.5% by weight. Thereafter, a liquid propellant is injected into the fused mixture in an amount of from 0.5% to 6.0%, preferably 0.5% to 5.0%, by weight. The mixture is then conveyed to an extrusion head and extruder whereupon foaming occurs. An apparatus suitable for carrying out such a method is also disclosed.

Affiliated with

Also associated with

Rating

Method and apparatus for extruding a thermoplastic plastics... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for extruding a thermoplastic plastics..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for extruding a thermoplastic plastics... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1751661