Bag folding machine

Details Bag folding machine Bag folding machine

1989-08-28

1991-03-19

Terrell, William E.

Manufacturing container or tube from paper; or other manufacturi

With cutting, breaking, tearing, or abrading

And with bending

493418, 493433, B65H 4516, B65H 45101, B31B 2326

Patent

active

050007297

ABSTRACT:
A bag folding machine for folding thin plastic bags, such as polyethylene bags, comprises two bag folding arrangements which substantially are made of a pair of folding drums provided respectively with longitudinal grooves, swing grippers and thrusting and cutting blades. The phase difference between the folding drums is determined so that the longitudinal grooves and the thrusting and cutting blades of one folding drum of the two folding drums coincide with the thrusting and cutting blades and longitudinal grooves of the other folding drum, respectively, at the point of tangency of the folding drums. Due to such construction, the machine is capable of alternately folding thin plastic bags in two so that the trailing half of the preceding folded bag folded by one of the bag folding arrangements and the leading half of the succeeding folded bag folded by the other bag folding arrangement overlap each other.

REFERENCES:
patent: 843781 (1907-02-01), Wheeler
patent: 940933 (1909-11-01), Klein
patent: 2092952 (1937-09-01), Campbell
patent: 2165786 (1939-07-01), Christman
patent: 2872186 (1959-02-01), Raybuck
patent: 4770402 (1988-09-01), Couturier

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