Method and apparatus for producing drawstring bags

Details Method and apparatus for producing drawstring bags Method and apparatus for producing drawstring bags

1986-02-14

1987-05-12

Schmidt, Frederick R.

Manufacturing container or tube from paper; or other manufacturi

Container making

Pliable container

83917, 156497, 156499, 493202, 493208, 493209, 493225, 493232, 493248, F16H 720

Patent

active

046646493

ABSTRACT:
A method and apparatus for forming draw tape bags wherein the bag material moves continuously during the manufacture, except for the last step. A roll of folded web is provided, and the loose edges are turned inwardly to form upper hems for the bags. 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. The web is further carried to a tandem sealer, the web passing over a roll where heated air is directed at the area of the hem. A "Teflon" strip is placed between the hems to prevent sealing them together. The web continues to a second sealing roll where the opposite side is sealed in the same way. The final step utilizes a stop-start apparatus with a side sealing blade. The side sealing blade has one radius for the body of the bag, and a larger radius for the hemmed area.

REFERENCES:
patent: 2519201 (1950-08-01), Seidman
patent: 2698046 (1954-12-01), Finke
patent: 4125044 (1978-11-01), Carrigan et al.
patent: 4130039 (1978-12-01), Heyden et al.
patent: 4304615 (1981-12-01), Siegel
patent: 4308087 (1981-12-01), Johnson
patent: 4318768 (1982-03-01), Johnson
patent: 4397204 (1983-08-01), Colombo
patent: 4498939 (1985-02-01), Johnson
patent: 4597750 (1986-07-01), Boyd et al.

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