Method of and apparatus for closing the end of a paillette

Details Method of and apparatus for closing the end of a paillette Method of and apparatus for closing the end of a paillette

1987-01-05

1989-04-18

Coan, James F.

Package making

Methods

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

53488, 215233, A61M 3702, A61D 702, B29C 5710, B65B 728

Patent

active

048214906

ABSTRACT:
This invention relates to closing an open end of a pailette containing a biological element. The invention includes heating a dose of thermo-plastic material to a flowable condition and injecting the dose into the cold open end of the paillettes so that the material adheres to the inner wall of the paillette and solidifies to form a stable plug closing the end. The thermo-plastic material is preferably in the form of solid sticks. A valve in closing apparatus opens and closes communication with a reservoir containing the thermo-plastic material under pressure and defines a pre-determined volume for the dose. The invention is especially applicable to the production of paillettes for use in artificial insemination.

REFERENCES:
patent: 2338102 (1944-01-01), Fields
patent: 3874430 (1975-04-01), Wieder
patent: 4576284 (1986-03-01), Wittwer et al.
French Search Report dated 01/10/86, 86 00273.

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