Process for impregnating spools of textile with a liquid composi

Details Process for impregnating spools of textile with a liquid composi Process for impregnating spools of textile with a liquid composi

1979-08-08

1981-09-01

Lawrence, Evan K.

Coating processes

Interior of hollow article coating

Vacuum or pressure utilized

81551, 68189, 118214, B05D 722

Patent

active

042872375

ABSTRACT:
In a process for impregnating a reel of thread in the form of a spool with a liquid resin composition, the thread is arranged on a perforated rigid mandrel so as to form a uniform reel in which the volume of open space approximately corresponds to the desired volume of resin to be impregnated, each spool is then gripped and completely sealed against resin leakage from its ends and, finally, the composition is injected under pressure into the interior of the perforated mandrel whereby there is a homogeneous loss of pressure from the mandrel to the spool's entire exterior curved surface and the resin diffuses uniformly to fill all voids through the spool.

REFERENCES:
patent: 1850047 (1932-03-01), Bachmann et al.
patent: 2437987 (1948-03-01), Wolfenden

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