Method for production of centrifugal release bag

Details Method for production of centrifugal release bag Method for production of centrifugal release bag

1977-07-05

1978-11-14

Spruill, Robert Louis

Package making

Methods

Forming a cover adjunct or application of a cover adjunct to...

53452, B65B 302, B65B 6102

Patent

active

041249658

ABSTRACT:
A method for making fluid release bags having a particular use to disperse reagents into a reaction chamber during centrifugation and as burst bags for manually dispersing reagents. The bags are made by scoring a flexible film material with a laser to form a uniform and predetermined linear depression along approximately the entire length of the film. The film is folded along the linear depression such that there are two sides of approximately equal dimensions and such that the bottom edge of the folded film is the laser scored linear depression. Portions of the two sides of the film are sealed together at predetermined intervals to form a continuous film of attached bags having one open end. A substance is injected into each bag through the open end. The open end edges are sealed together, and the bags are separated from one another into individual bags or groups of bags by suitable cutting means. These bags can then be used individually or in centrifuges and will suddenly and fully rupture at a predetermined level of pressure or centrifugal force which depends on the depth of the linear depression scored by the laser.

REFERENCES:
patent: 3186628 (1965-06-01), Rohde
patent: 3335540 (1967-08-01), Reil et al.
patent: 3456867 (1969-07-01), Repko
patent: 3626143 (1971-12-01), Fry
patent: 3636678 (1972-01-01), Maros et al.
patent: 3713775 (1973-01-01), Schmitz
patent: 3821873 (1974-07-01), Benner et al.
patent: 3909582 (1975-09-01), Bowen

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