B - Operations – Transporting – 29 – B
Patent
B - Operations, Transporting
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B29B 15/08 (2006.01) B29C 70/02 (2006.01) B29C 70/20 (2006.01) B29C 70/66 (2006.01) D04H 1/00 (2006.01) D06M 23/00 (2006.01) D06M 23/18 (2006.01)
Patent
CA 1279986
A B S T R A C T O F T H E I N V E N T I O N REINFORCING MATERIAL The invention relates to a reinforcing material for duroplastics and a process of preparing the same by embedding hollow body fillers (microspheres) in the interspaces of the fibers of a web, knitted fabric or stitch bonded products of fibers having a high modulus of elasticity. By virtue of the incorporation of the hollow body fillers,the particle diameter of which amounts to between 20 and 300 µm, the absorbing capacity for liquid curable resins can be adjusted to the desired value. The process, of the subject invention teaches to incorporate the unexpanded preform of a hollow body filler into the interspaces of the fibers and to subject the so-obtained material for a sufficient period of time to the temperature necessary for the blowing process of the preform. The reinforcing material can be used for preparing light laminates duroplastic materials (Figure 1).
523025
Johnson Douglas S. Q.c.
Kolzer Klaus Kurt
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