Manufacture of bitumen pipes

Details Manufacture of bitumen pipes Manufacture of bitumen pipes

1981-02-06

1982-07-13

Ball, Michael W.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156 74, 156 82, 156278, 156289, 264131, 264257, 264270, 427204, 427224, 427231, 427240, 427417, B65H 8100, F16L 914

Patent

active

043392911

ABSTRACT:
A reinforced bitumen pipe has an inner, strength-providing, reinforced thermosetting resin layer which is coated on its inner and outer sides with a bitumen layer. The bitumen layer on the inner side, and preferably also the bitumen layer on the outer side, is separated from the strength-providing reinforced thermosetting resin layer with the aid of an insulating glass fiber layer into which the thermosetting resin and the bitumen partially penetrate without finding their way up to each other.

REFERENCES:
patent: 2047778 (1936-07-01), Hayden
patent: 2545030 (1951-03-01), Isenberg et al.
patent: 2546533 (1951-03-01), Williamson
patent: 2653887 (1953-09-01), Slayter
patent: 2872947 (1959-02-01), Isenberg
patent: 2919721 (1960-11-01), Isenberg
patent: 3039495 (1962-06-01), Drukker
patent: 3288171 (1966-11-01), Hicks
patent: 4081302 (1978-03-01), Drostholm

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