Method of and apparatus for producing hollow-cylindrically shape

Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor

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210494R, 210508, 428 36, 428296, B65H 8100

Patent

active

041000099

ABSTRACT:
A method for producing a hollow-cylindrically shaped fibrous article stabilized by hot adhesion and an apparatus suitable to produce the same are provided. Said method comprises passing a web of gathered fiber layer carried on a conveyor belt through a heating zone, heating said web in such a way that a lower-melting component of composite fiber contained in the lower part of said web contacting the conveyor belt is not in the molten state and a lower-melting component contained in the upper part of said web is in the molten state, while separating said web from the conveyor belt, winding up said web on a take-up rod or tube in such a way that the upper surface thereof occupies the inner side of the winding, while heating the web further, cooling the wound up article and drawing out the take-up rod or tube from the shaped product.
The production method of the present invention is simple and does not require complicated apparatus and the resultant product is useful for filtration.

REFERENCES:
patent: 2500282 (1950-03-01), Francis
patent: 3479239 (1969-11-01), Hullhorst
patent: 3904798 (1975-09-01), Vogt et al.
patent: 3952121 (1976-04-01), Dilo

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