Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Patent
1985-03-11
1987-03-17
Simmons, David
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
29512, 156227, 156252, 156443, 156459, 156513, B31F 100
Patent
active
046505326
ABSTRACT:
A method of forming folded hems about the periphery of openings in a moving fabric web includes inserting a mandrel having radially expandable and contractible folding means into the openings to turn out of the web a peripheral portion of the fabric which is then folded back by radial expansion of the folding means. The folding means is radially contracted for entry and withdrawal of the mandrel. Apparatus for carrying out the method may comprise a rotating drum within which a plurality of mandrels is mounted to orbit with the drum. A continuous web of fabric having openings therein is carried by the drum and positioning means reciprocatingly insert and withdraw the mandrel through the fabric openings. Control means radially expand and contract the folding means synchronously with the positioning means.
REFERENCES:
patent: 3018518 (1962-01-01), Jefferys
patent: 3475249 (1969-10-01), Smith
patent: 3587501 (1971-06-01), Cruden
patent: 3694889 (1972-10-01), Pommier
patent: 3756878 (1973-09-01), Willot
patent: 4155798 (1979-05-01), Becker
Dolan Kevin G.
Kloehn Kurt J.
Chiatalas John L.
Kimberly-Clark Corporation
Simmons David
Traut Donald L.
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