Abstract:
Fibrous glass strands are impregnated and coated with an elastomeric material by passing each strand through an immersion bath and between a pair of wheels rotating in circumferential contact. The wheel contact surfaces are elastomeric annuli capable of being deformed around each moving strand to envelop it and perform the functions of a die in removing excess impregnant therefrom. Pressure exerted by the wheel elastic surfaces is varied as a means of selectively controlling the impregnant weight and uniformity per unit length of strand.
Abstract:
Fibrous glass strands are impregnated and coated with an elastomeric material by passing each strand through an immersion bath and between a pair of wheels rotating in circumferential contact. The wheel contact surfaces are elastomeric annuli capable of being deformed around each moving strand to envelop it and perform the functions of a die in removing excess impregnant therefrom. Pressure exerted by the wheel elastic surfaces is varied as a means of selectively controlling the impregnant weight and uniformity per unit length of strand.