Uniform dispensing multichamber tubular containers

Details Uniform dispensing multichamber tubular containers Uniform dispensing multichamber tubular containers

1998-02-12

1999-09-21

Shaver, Kevin P.

Dispensing

Collapsible wall-type container

Plural container and/or compartment

B65D 3522

Patent

active

059542349

ABSTRACT:
A multichamber container must have certain characteristics in order to uniformly dispense the contents of each chamber from the container. The outer wall of the container and the inner divider web walls must have certain characteristics. The inner divider web walls must be highly flexible while the outer container wall must be less flexible. The Deflective Force for the outer wall must be greater than the Deflective Force for the web walls. In addition, to alleviate the problem of suckback of air into the container chambers, the outer wall should exhibit a specific Retention Index. This is a measure of the outer wall to remain deflected after the removal of the deflecting force. The inner divider web wall will have a lower Retention Index than the outer wall. By the proper selection of outer wall and web walls, there can be uniform dispensing from the dispenser. The Stiffness of the outer wall also should be less than the Stiffness for the inner web divider walls. This can be accomplished by the choice of films and the thickness of the outer wall film and the inner divider wall film.

REFERENCES:
patent: 1894115 (1933-01-01), Murphy
patent: 2517027 (1950-08-01), Rado
patent: 3506157 (1970-04-01), Dukess
patent: 3788520 (1974-01-01), Dukess
patent: 4089437 (1978-05-01), Chutter et al.
patent: 4687663 (1987-08-01), Schaeffer
patent: 4964539 (1990-10-01), Mueller
patent: 5076464 (1991-12-01), Simon
patent: 5244120 (1993-09-01), O'Meara
patent: 5269441 (1993-12-01), O'Meara

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