Method and apparatus for producing draw tape bags

Details Method and apparatus for producing draw tape bags Method and apparatus for producing draw tape bags

1987-05-08

1989-05-23

Schmidt, Frederick R.

Manufacturing container or tube from paper; or other manufacturi

With cutting, breaking, tearing, or abrading

Of moving work

493196, 493197, 493232, 493237, 493225, 493928, 83424, 83435, 83671, 83917, B05B 114

Patent

active

048326771

ABSTRACT:
A method and apparatus for forming draw tape bags wherein the bag material moves continuously during the manufacture, except for the last step. The apparatus may be used with an in-line system wherein a tube is extruded and a side gusset is formed to create a hem; or the apparatus may be used with an off-line system wherein folded bag material is used, and a continuous hemmer is provided to turn the loose edges. In the off-line system a constant tension dancer precedes the hemmer to maintain constant tension on the web regardless of the size of the supply roll. The web continues to move, and a cutter is actuated to move through a circle and engage the web to punch finger holes in the hem. A reel of a strip of material is continuously fed, the strip being slit longitudinally to provide the draw tapes which are inserted into the hems. A tape guide tensions the tape and assures that the tape is well within the hem, the hems are sealed, and the bags are side welded.

REFERENCES:
patent: 1946457 (1934-02-01), Donnelley et al.
patent: 2519201 (1950-08-01), Seidman
patent: 2859814 (1958-11-01), Berney
patent: 3623387 (1971-11-01), Mehnert
patent: 3782233 (1974-01-01), Helm
patent: 4125044 (1978-11-01), Carrigan et al.
patent: 4130039 (1978-12-01), Heyden et al.
patent: 4688455 (1987-08-01), Takehara

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