Hybrid pultruded products and method for their manufacture

Details Hybrid pultruded products and method for their manufacture Hybrid pultruded products and method for their manufacture

1990-01-02

1991-01-08

Lesmes, George F.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Noninterengaged fiber-containing paper-free web or sheet...

428284, 428285, 156179, 1563073, 1563077, B32B 528, B32B 2902

Patent

active

049834533

ABSTRACT:
The present invention is a composite pultruded product and the method for its manufacture. The product is made with a plurality of longitudinal glass roving strands. In addition, a cellulosic mat is used in association with the roving. The mat serves as a filler, or reinforcing filler, to ensure uniform resin distribution within the product even when the glass content is significantly reduced. The method can be carried out on convention pultrusion equipment with little or no modification. The cellulose fiber mats may be either air laid or wet laid and should have an ultimate moisture of 3% or less before being incorporated into the pultruded product.

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"Designing Thermostat Shapes for Pultrusion," Machine Design, vol. 43, No. 31, 12-23-71, J. Comey.
Martin, J. D. 1986, Pultrusion and Pulforming, Modern Plastics Encyclopedia, pp. 317-318, McGraw14 Hill, New York.

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