Method of and means for making reclosable bag material, and mate

Details Method of and means for making reclosable bag material, and mate Method of and means for making reclosable bag material, and mate

1985-11-14

1987-05-19

Dawson, Robert A.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

24576, 24587, 156 66, 156191, 156202, 156204, 156378, 156459, 156465, 156499, 383 63, 428 36, 428 57, 428 99, 428223, 493214, B65C 0000

Patent

active

046665366

ABSTRACT:
A method of and apparatus for making, and the resulting material for fabricating reclosable bags and in which a length of web of predetermined width of bag material as wound on a mandrel has fastener strip sections joined to and across the width of the web. The web is adapted to travel continuously spirally about the mandrel. The fastener carrying web may be folded longitudinally and resiliently flexible profiles of the folded fastener strip sections separably joined. Ends of the fastener strips before, and after, folding may be flow melted and fusedly flattened. Ends of the fastener strips may be aligned with a fold juncture of an underturned flange of the web and the margin then unfolded to extend beyond the strip ends.

REFERENCES:
patent: Re29043 (1976-11-01), Naito
patent: 3789888 (1974-02-01), James et al.
patent: 3948705 (1976-04-01), Ausnit
patent: 4046408 (1977-09-01), Ausnit
patent: 4354541 (1982-10-01), Tilman
patent: 4355494 (1982-10-01), Tilman
patent: 4372793 (1983-02-01), Herz
patent: 4617683 (1986-10-01), Christoff

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