Bottom pressure pad for gable carton forming apparatus

Details Bottom pressure pad for gable carton forming apparatus Bottom pressure pad for gable carton forming apparatus

1991-03-11

1992-08-04

Kisliuk, Bruce M.

Manufacturing container or tube from paper; or other manufacturi

Container making

Rigid container

493143, 493218, 493936, B31B 128

Patent

active

051354632

ABSTRACT:
A pressure pad is provided for bottom sealing of a gable carton. The pressure pad cooperates with a mandrel which is urged into an opened-top gable carton for sealing the carton bottom. The pressure pad is provided with a sealing bar matrix which is disposed thereon to register with at least selected raw edges of paperboard material on the carton bottom. Each sealing bar functions to compress the fibrous paperboard material from which the carton is formed to render the raw edges less likely to absorb liquids that may be wicked from the raw edges to other locations in the carton. The carton formed by the pressure pad is characterized by reduced thickness raw edges adjacent the bottom.

REFERENCES:
patent: 3120335 (1964-02-01), Egleston et al.
patent: 3252386 (1966-05-01), Reimers
patent: 3422730 (1969-01-01), Mitzelfelt et al.
patent: 3971300 (1976-07-01), Bachner
patent: 4011800 (1977-03-01), Walke
patent: 4761156 (1988-08-01), Bachner et al.
patent: 4838847 (1989-06-01), Kume et al.
patent: 5021040 (1991-06-01), Phillips

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