Method and apparatus for the production of a bead of organic mat

Details Method and apparatus for the production of a bead of organic mat Method and apparatus for the production of a bead of organic mat

1989-06-05

1990-09-18

Dawson, Robert A.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

118302, 118429, 137 13, 156292, 2221465, 417 61, 417707, 427287, 427422, B32B 3112

Patent

active

049575724

ABSTRACT:
In order to form a bead of organic material having a butyl rubber base and a viscosity greater than 35000 poises, the material in a drum is heated and pumped by a reciprocating pump and delivered to an output nozzle via a conduit. A lock chamber in the conduit is delimited by valves. A variable volume chamber connected to the lock chamber or upstream of the lock chamber is able to selectively take in or discharge organic material for maintaining a constant pressure at the nozzle.

REFERENCES:
patent: 3412903 (1968-11-01), Riper et al.
patent: 4024854 (1977-05-01), Park et al.
patent: 4073409 (1978-02-01), Gardner et al.
patent: 4696256 (1987-09-01), Lenhardt
patent: 4714425 (1987-12-01), Lenhardt
patent: 4790458 (1988-12-01), Moore

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