Textiles: cloth finishing – Shrinking – Thread compacting
Patent
1990-09-24
1992-06-02
Schroeder, Werner H.
Textiles: cloth finishing
Shrinking
Thread compacting
D06C 2100
Patent
active
051175401
ABSTRACT:
Machines and methods for longitudinal compressive treatment of a web are shown. A retarder blade disposed adjacent a roll provides a web-contacting slide surface to which the longitudinally compressed web transfers and upon which it slides as it leaves the roll. This retarder blade has two spaced-apart roll-contacting regions disposed toward the roll, one of the roll-contacting regions being at the forward tip of the blade near the drive region and the second roll-contacting region being at a heel region spaced downstream. A pair of drive rolls defines a nip for driving the web forward, the surface of each of the rolls comprising a series of principle web-gripping grooves extending in only one direction helically about the roll axis. At the nip line of the rolls the angle of the grooves of one roll is inclined positively relative to the direction of travel of the web, and the angle of the grooves of the other roll is inclined negatively relative to the direction of travel of the web. Special roll contours and special forms of the blade construction, and other features of the driving and retarding passages are described.
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Munchbach George E.
Walton Richard C.
Walton Richard R.
Calvert John J.
Schroeder Werner H.
Walton Richard R.
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