Apparatus for folding a band into accordion pleats including thr

Details Apparatus for folding a band into accordion pleats including thr Apparatus for folding a band into accordion pleats including thr

1987-07-27

1989-07-25

Schmidt, Frederick R.

Manufacturing container or tube from paper; or other manufacturi

Bending

Folding

493233, 493244, 493450, B31F 100

Patent

active

048509493

ABSTRACT:
A method and apparatus for transferring a band at a predetermined speed V to a station for pre-marking two folding lines which define a central panel of each pleat and then subjecting the band over a short distance to abrupt deceleration to a speed V' such that V'/V=1/L, where L is the length of each pleat in the fully extended state and 1 is the length of the pleat after folding so as to form a pocket, the last two panels of each pleat being inserted beneath the first panel prior to folding-back and maintaining the pocket in a flat position on the band.

REFERENCES:
patent: 2729445 (1956-01-01), Webster
patent: 4095695 (1978-06-01), Steidinger
patent: 4279611 (1981-07-01), Labombarde et al.
patent: 4455809 (1984-06-01), Dallaserra
patent: 4524557 (1985-06-01), Silverman et al.
patent: 4586703 (1986-05-01), McAnelly
patent: 4708332 (1987-11-01), Besemann

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