Methods and apparatus for producing foamed thermoplastics...

Details Methods and apparatus for producing foamed thermoplastics... Methods and apparatus for producing foamed thermoplastics...

B - Operations, Transporting

32

B

18/668

B32B 27/28 (2006.01) B29B 11/10 (2006.01) B29B 11/12 (2006.01) B29B 11/16 (2006.01) C08J 9/14 (2006.01)

Patent

CA 1173613

ABSTRACT TITLE: METHODS AND APPARATUS FOR PRODUCING FOAMED THERMOPLASTICS MATERIALS AND ARTICLES The invention concerns a production of foamed thermoplastics materials in which the thermoplastics material to be foamed is mixed with a solvent. The resultant gel is compressed to form a pre-form or pre- cursor which is heated. The use of polyethersulphone (P,E.S.), with acetone and/or butanone is described, In addition to the description of methods of producing foamed thermoplastics materials a description is also made of methods of forming composite, laminated, structures using foamed thermoplastics materials with other laminae.

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