Process and device to fold strips of swabs

Details Process and device to fold strips of swabs Process and device to fold strips of swabs

1989-11-29

1991-10-15

Terrell, William E.

Manufacturing container or tube from paper; or other manufacturi

Bending

493405, 493426, 493435, 493445, 493456, 493463, B31B 4516, B31B 4518, B31B 4530

Patent

active

050570692

ABSTRACT:
A method and apparatus for folding a length of material includes forming first and second transverse folds at opposite ends of the material whereby the material defines first and second end parts and a central part. Longitudinal corrugations are formed in the first and second end parts in order to reduce a transverse dimension of the first and second end parts. A third transverse fold is formed in the central part in order to bring the first and second end parts into superposition. In the resulting folded material, edges of the first and second end parts are recessed inward from edges of the central part.

REFERENCES:
patent: 1501774 (1924-07-01), Heeter et al.
patent: 1693147 (1928-11-01), King
patent: 1980532 (1934-11-01), Kahn
patent: 2954974 (1960-10-01), Kellett
patent: 3901501 (1975-08-01), Kistner
patent: 4083552 (1978-04-01), Sioman
patent: 4487598 (1984-12-01), McDonald
patent: 4569672 (1986-02-01), Marion et al.
patent: 4601695 (1986-07-01), Pazzi
patent: 4699031 (1987-10-01), D'Angelo et al.

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