B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
B29C 70/08 (2006.01) B29C 70/52 (2006.01)
Patent
CA 2390468
A method for forming a pultruded part includes collating reinforcing fibers by providing a first layer of reinforcing rovings extending in the longitudinal pultrusion direction, applying onto the first layer an intermediate layer of reinforcing fibers at least some of which include at least portions thereof which extend in the transverse direction and covering the intermediate layer with a second layer of rovings extending in the longitudinal direction. To the collated fibers is applied a resin so as to permeate through the layers and the materials are passed through a die to set the resin. The first and second layers are arranged to form first and second opposed surfaces of the part with the intermediate layer therebetween. The resin is a two part urethane resin which has sufficient strength to prevent the fibers from the first and second layers at the first and second surfaces respectively from breaking through the surface on bending of the wall thus allowing the use of the rovings at the surfaces with the transverse fibers therebetween so that the transverse fibers can be formed from loose or chopped fiber material from rovings rather than more expensive mat.
Bamford Mark Robert
Davies Laurence W.
Isfeld Rodney Herbert
Battison Williams Dupuis
Omniglass (2010) Inc.
Omniglass Ltd.
LandOfFree
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