Applicator for highly reactive materials

Details Applicator for highly reactive materials Applicator for highly reactive materials

1990-02-15

1991-05-21

Huppert, Michael S.

Dispensing

With discharge assistant

Container with follower

222327, 206384, 53471, B67D 542

Patent

active

050167847

ABSTRACT:
An applicator syringe for containing and dispensing moisture-sensitive or moisture-reactive adhesives comprises a generally sealed barrel containing a plunger having a non-stick polymeric seal and a hydrocarbon grease disposed between the seal and the adhesive contained in the barrel. As the plunger advances in the barrel, a sealing, thin film of the hydrocarbon grease is deposited on the interior walls of the syringe barrel to provide a moisture-impervious seal between the polymeric seal and barrel and to aid in smooth advancement of the plunger in the barrel.

REFERENCES:
patent: 3524537 (1970-08-01), Winter
patent: 4109833 (1978-08-01), Gross
patent: 4247023 (1981-01-01), Shew
patent: 4556156 (1985-12-01), Frutin

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