Method for impregnating reinforcing fiber materials with a resin

Details Method for impregnating reinforcing fiber materials with a resin Method for impregnating reinforcing fiber materials with a resin

1982-04-19

1984-06-26

Page, Thurman K.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156169, 156173, 156433, B65H 8100

Patent

active

044564953

ABSTRACT:
Reinforcing fiber materials such as rovings, webbings, and other fiber materials are impregnated with a resinous binder material in such a manner that gaseous inclusions are avoided whereby a surprising increase in the strength of the fiber compound material is achieved. For this purpose the liquid resinous binder material is applied substantially only to one side of the reinforcing material which is then moved through an absorbing zone in which the liquid resinous binder material penetrates the reinforcing material substantially completely as a result of a predetermined residence time and temperature in the absorbing zone. Gas inclusions are removed by adsorption and/or by expulsion. The gas adsorbing and expulsion zone is a chamber in which a plurality of guide rollers are arranged so as to cause the impregnated material to repeatedly reverse its moving direction, whereby the sequential and repeated penetration of the reinforcing material by the resinous material and the removal of gas inclusions are enhanced. Further, the precise weight ratio adjustment of resin to fiber material is enhanced by moving the impregnated material in a substantially vertical orientation through a fulling station. The vertical orientation facilitates the flow off of excess resin.

REFERENCES:
patent: 3762364 (1973-10-01), Funsch et al.
patent: 3796624 (1974-03-01), Avis et al.
patent: 3973068 (1976-08-01), Weber
patent: 4052521 (1977-10-01), Ferrari

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