Formed thermal insulator and process for preparation of same

Details Formed thermal insulator and process for preparation of same Formed thermal insulator and process for preparation of same

1992-09-02

1993-09-07

Robinson, Ellis P.

Stock material or miscellaneous articles

Hollow or container type article

Polymer or resin containing

428 369, 428 3691, 428408, 428282, 428920, 428284, 428902, 428285, 428218, 138177, 138141, B32B 904, B32B 108, B32B 702

Patent

active

052427234

ABSTRACT:
The present invention provides: (1) a formed tubular thermal insulator comprising a felt piece of carbon fibers spirally wound to form a laminate of felt layers integrally bonded to each other with the carbonized substance present between the felt layers with substantially no wavy deformation of spiral winding form, and (2) a process for preparing a formed thermal insulator, the process comprising spirally winding a felt piece of carbon fibers and a film and/or net with a carbonizable resin inserted therebetween while applying a tensile force on the film and/or net to form a laminate, followed by curing and carbonization.

REFERENCES:
patent: 3844877 (1974-10-01), Wessendorf et al.
patent: 4104783 (1978-08-01), Schultz et al.
patent: 4777086 (1988-10-01), Madden et al.

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