Removable core for the production of tubular structures from fib

Details Removable core for the production of tubular structures from fib Removable core for the production of tubular structures from fib

1985-07-24

1986-11-25

Van Balen, William J.

Stock material or miscellaneous articles

Hollow or container type article

Polymer or resin containing

156 85, 264313, 428 71, 428 76, 428188, 428913, B32B 108, B32B 326, B32B 3300

Patent

active

046248749

ABSTRACT:
A removable core for use in the production of tubular structures from fibre einforced resin materials. The body of the core is composed of a foam material which softens or collapses under the action of heat sufficient to cure the resin material but is hard and cross-sectionally dimensionally stable under less heat than that. The core is provided on the outside with a heat shrunk plastic tube or hose which closely embraces the foam body and serves as a coating therefor, thereby enhancing the rigidity and stability of shape of the core and imparting thereto a smooth surface.

REFERENCES:
patent: 3113897 (1963-12-01), Honningstad et al.
patent: 3607602 (1971-09-01), Greskiewicz

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