Method and apparatus for feeding reinforcing strand when making

Details Method and apparatus for feeding reinforcing strand when making Method and apparatus for feeding reinforcing strand when making

1976-12-23

1978-05-16

Klein, David

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

138172, 156172, 156173, 156174, 156426, 156429, 156431, 242 722, 428 36, B65H 8100

Patent

active

040897192

ABSTRACT:
In a method for feeding reinforcing strand when making a tubular product of plastic or other synthetic material, comprising supplying helically a supporting strand during rotation of a tube blank and applying a longitudinal reinforcing strand to the blank, the longitudinal reinforcement strand is in form of pieces cut off from a continuous strand after abutment thereof against the supporting strand. The continuous strand gradually displaces the cut off lengths of strand during the rotation of the tube blank. An apparatus for carrying out the method comprises means for feeding support helically around a rotating tube blank, means for feeding portions of additional reinforcing strand oriented in the direction of the tube blank to place the portions between the supporting strands and the tube blank, and means for cutting off said axially orientated reinforcing strands. The cutting is carried out when the strand portion is held by at least one supporting strand.

REFERENCES:
patent: 2797728 (1957-07-01), Slayter et al.
patent: 3444020 (1969-05-01), Kalwaites
patent: 3608164 (1971-09-01), Bolles
patent: 3700527 (1972-10-01), Grosh

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