Method for transversely cutting and hemming a web of fabric

Details Method for transversely cutting and hemming a web of fabric Method for transversely cutting and hemming a web of fabric

1977-10-27

1980-02-05

Weston, Caleb

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

26 514, 26 515, 83209, 156250, 156350, 156353, 156523, 226 10, 226 45, B32B 3118, D03D 4750

Patent

active

041871324

ABSTRACT:
A web of towel material having pile sections separated by narrow transverse strips of unpiled or plain cloth is fed onto an input table 4 of a cutting and hemming machine beneath a row of individually controlled drive rollers 5. When a plain transverse strip arrives in the area of a hinged table section 6 beneath a transverse bridge 2, its reduced thickness is detected by sensors 21 which individually disengage and brake an associated drive roller 5, to thereby stop the web with the strip accurately transversely aligned in the machine. The sensors and hinged table section are then swung out of the way, and a carriage 3 travel mounted on the bridge 2 is moved across the table. As it goes across it lays a weld strip 33 over the plain towel strip, heat softens the weld strip at 36, 37, cuts the towel and weld strip longitudinally with scissors 38, turns and folds the cut edges of the towel up and back over each other with the weld strip half inbetween with V-shaped ramp 41 and fold rods 42, 43, and seals the hem together with ultrasonic welder 46 and pressure roller 47.Tension is maintained on the web by a brush withdrawal roller 9 driven faster than drive rollers 5, and by clamping strips 61, 62.

REFERENCES:
patent: 2716266 (1955-08-01), MacIssac et al.
patent: 3755033 (1973-08-01), Femus
patent: 3797348 (1974-03-01), Moore
patent: 3856599 (1974-12-01), Bylund
patent: 4120740 (1978-10-01), Morgan et al.

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