Envelope folding system

Details Envelope folding system Envelope folding system

1984-04-13

1986-08-26

Larson, Lowell A.

Manufacturing container or tube from paper; or other manufacturi

Container making

Rigid container

493247, 493252, 493946, 156443, 156227, 264339, B31B 128

Patent

active

046080392

ABSTRACT:
An apparatus for folding envelope blanks comprises a plurality of platform assemblies which are rotatably mounted on a base. The platform assemblies are incrementally advanced around the base, and separate mechanisms located around the periphery of the base perform the individual folding operations. Particular advantages are achieved by including the side flap folding mechanism on the platform assemblies so that the folded flaps are held firmly in place until the envelope is removed from the machine.

REFERENCES:
patent: 3574294 (1971-04-01), Egli
patent: 3905280 (1975-09-01), Egleston et al.
patent: 4304621 (1981-12-01), Appoldt et al.
patent: 4347091 (1982-08-01), Hauck et al.
patent: 4367117 (1983-01-01), Seaborn
patent: 4415325 (1983-11-01), Fuchs et al.
patent: 4454743 (1984-06-01), Bulso, Jr. et al.

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