Wrapping of pipes or tubes

Details Wrapping of pipes or tubes Wrapping of pipes or tubes

1975-02-03

1976-08-03

Drummond, Douglas J.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156192, 156195, 156229, 156244, 156361, 264173, 264 407, B65H 8102

Patent

active

039727610

ABSTRACT:
A steel pipe with longitudinal welding seam is wrapped helically by means of a polyethylene ribbon which is normally stretched, but temporary stretch relief provides for a thicker envelope above and adjacent to the seam. A ribbon deflector roll and a pressure roll provide the stretching through a speed differential which is changed as stretch relief.

REFERENCES:
patent: 2398876 (1946-04-01), Bailey
patent: 3271064 (1966-09-01), Hall
patent: 3616006 (1971-10-01), Landgraf et al.
patent: 3706624 (1972-12-01), Rinker
patent: 3802908 (1974-04-01), Emmons
patent: 3814646 (1974-06-01), Meyer et al.
patent: 3823045 (1974-07-01), Hielema

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