Flexible tubular structures

Details Flexible tubular structures Flexible tubular structures

1994-06-10

1997-09-30

Clark, W. Robinson H.

Stock material or miscellaneous articles

Hollow or container type article

Polymer or resin containing

138137, 138141, 138145, 138153, 138174, 525240, 428 369, 428 3691, 428500, 428501, 428515, F16L 1104, F16L 1114, F16L 1108, F16L 1102

Patent

active

056723989

ABSTRACT:
A flexible tubular structure for use in the lining of passageways and methods relating thereto are described. The tubular structure is made of a laminate which comprises a film layer, made by melting and mixing ethylene-vinyl acetate copolymer (EVA) and polyethylene, and a felt layer. In a butt join region of the structure, a felt strip and polyethylene/EVA strip are heat welded for strength.

REFERENCES:
patent: 4397337 (1983-08-01), Porrmann et al.

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