Reclosable bags, apparatus and method

Details Reclosable bags, apparatus and method Reclosable bags, apparatus and method

1980-07-30

1982-10-26

Culver, Horace M.

Package making

Methods

Forming a cover adjunct or application of a cover adjunct to...

53451, 53128, 53551, 493194, 493214, B65B 6100, B65B 912

Patent

active

043554946

ABSTRACT:
A method and apparatus are provided by which bag forming material is obtained by feeding sheet material (2) together with male and female closure elements (5, 6) to a nip between guide roller (3) and pressure rollers (9, 10) at which adhesive is applied from nozzles (11, 12). The resulting material assembly is fed by drive roller means (14, 15)to an accumulator (16) on a continuous basis and then intermittently over a forming shoulder (21) into a tubular form (22) while maintaining the closure elements (5, 6) at a predetermined distance apart before the forming shoulder (21) by means such as grooves (19) in guide roller (18) and locating the closure elements (5, 6) in predetermined positions facing each other downstream of the shaping shoulder by suitable means (23) which may include rotatable guide elements. The tubular form (22) is drawn through the apparatus by transverse reciprocating sealing bars (26) and a pilfer proof closure can be provided by vertical sealing bars (25).

REFERENCES:
patent: 3198228 (1965-08-01), Naito
patent: 3219084 (1923-11-01), Ausnit et al.
patent: 3381592 (1968-05-01), Ravel
patent: 3473589 (1969-10-01), Gotz
patent: 3807118 (1974-04-01), Pike
patent: 3815317 (1974-06-01), Toss
patent: 3948705 (1976-04-01), Ausnit
patent: 4101355 (1978-07-01), Ausnit

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