Laminated structural member and method of making same
AssigneeCapital Wire and Cable, Division of U.S. Industries
InventorJohn Philip Pringle
Life of this patent
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Abstract
A laminated structural member is fabricated with one layer of sheet material such as plywood or fiberboard and an adjacent layer bonded thereto and formed from a mixture of scrap particles of thermoplastic wire and cable insulation, wood particles, comminuted paper, sawdust, and a suitable resin binder. The fabrication procedure is carried out by initially forming a mixture of reclaimed thermoplastic wire or cable insulation, a thermosetting binder, and one or more wood like fillers, such as wood chips, comminuted paper and sawdust and mold release agent. The mixture is then placed in a mold with the sheet material and is subjected to heat and pressure to form a structural member.
Claims7
A flexible laminated structural member which comprises in combination:
- (a) a first layer comprising:
- 1. from about 30 to about 60 weight percent of a scrap particulate thermoplastic material wherein at least 50 percent of the particles have a particle dimension of from about 1/16 inch to about 1/4 inch;
- 2. from about 70 to about 40 weight percent of a particulate wood filler material;
- 3. from about 11 to about 18 weight percent of a thermosetting binder, said weight percent based upon the total weight of the particulate thermoplastic material and particulate wood filler material;
- and
- (b) a second layer comprising a sheet material of plywood, fiberboard or the like.
Dependencies are inferred from the claim text.