Method and die for forming triple extruded profiles

Details Method and die for forming triple extruded profiles Method and die for forming triple extruded profiles

1995-11-01

1998-08-18

Loney, Donald

Stock material or miscellaneous articles

Structurally defined web or sheet

Including aperture

428137, 428172, 425113, 4251311, 425382R, 425463, B32B 310, A23G 120

Patent

active

057956413

ABSTRACT:
A method is provided for triple extrusion of a foam material, a coating and one or more flexible flanges attached to the coating or foam material. All three materials are coextruded through a common die and are useful for forming window sashes.

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patent: 5267739 (1993-12-01), Vaughan
patent: 5267846 (1993-12-01), Miyama et al.
patent: 5403176 (1995-04-01), Bruckmann
"Dual and coextrusion: the happpy marriage of two unlike plastics," by Robert Stedfeld, Modern Extrusion, Feb. 1979, pp. 51-55.
"Combination of three plastics make one rigid structure for variety of markets," Product Engineering, Dec., 1976, p. 15.
Supplementary European Search Report, dated Oct. 22, 1996.
PCT International Preliminary Examination Report, dated Nov. 21, 1995.

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