F - Mech Eng,Light,Heat,Weapons – 16 – L
Patent
F - Mech Eng,Light,Heat,Weapons
16
L
189/63
F16L 9/08 (2006.01)
Patent
CA 1095439
ABSTRACT OF THE DISCLOSURE There is described in reinforced plastic pipe a pipe wall construction comprising a relatively thin, sand-free, resin-rich, glass fiber reinforced thermosetting resin protective inner liner portion, a relatively thick intermediate structural wall portion constituting the load-bearing portion of the pipe wall construction as designed and including by weight from 30% to 60% thermosetting resin, from 1% to 45% sand, from 3% to 25% randomly disposed chopped glass fibers, and from 1% to 60% cir- cumferentially extending continuously wound glass filaments, the resin, sand, chopped glass fibers, and continuously wound glass filaments of the structural wall portion being distributed uniformly, whereby in across section of the pipe wall construction the structural wall portion appears to be a single homogeneous layer as distinct from plural layers of different compositions, and a relatively thin, resin-rich, glass fiber reinforced thermo- setting resin protective outer wall portion, the glass fiber reinforcement of the relatively thin, resin-rich, protective inner liner and outer wall portions affording corrosion resistance by preventing surface cracking otherwise likely to occur if the inner liner and outer wall portions were entirely resin.
327447
Gilbu Agnar
Greenwood Mark E.
Pearson Lee E.
Corporation Owens-Corning Fiberglas
G. Ronald Bell & Associates
LandOfFree
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