Waterproof, durable products made from recycled rubber products
OwnerGerald Edsoninventor
Life of this patent
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Abstract
Synthetic roofing products such as simulated slate and clay tile shingles, and other products, such as flower pots, floor coverings, plastic pallets and the like are compression molded from a mixture of ultra low density polyethylene binder and a filler which may comprise recycled rubber products such as E.D.P.M (ethylene propylene diene monomer) and S.B.R. (styrene butadiene rubber). Colorants may be added to the mixture prior to final molding. Many of the products, especially synthetic shingles, are less expensive, easier to handle, and more durable than the slate or clay tile shingle product simulated.
Claims9
A synthetic, compression molded product comprising:
- ultra low density polyethylene binder, and a filler selected from the group consisting of recycled rubber products, ethylene propylene diene monomer, styrene butadiene rubber, and combinations thereof, which have been blended together at a temperature in the range of 280-350 deg. F. to form an homogeneous blend having the consistency of fresh-mixed putty, and extruded at a temperature below 350 deg. F., then molded in a compression mold of the desired configuration at a temperature in the range of 160-350 deg. F.
Spanish and Italian replica tiles compression molded from a mixture comprising:
- about 20-50% by weight ethylene propylene diamine monomer scrap from rubber seals and car parts and styrene butadiene rubber;
- about 10-30% by weight elastomeric binders selected from the group consisting of ethylene vinyl acetate and ultra low density polyethylene;
- about 20-40% by weight fire retardant;
- and
- about 10-30% by weight high density polyethylene.
A slate replica roofing shingle compression molded from a mixture of:
- about 20-40% by weight ethylene propylene diene monomer scrap from rubber seals and car parts and vulcanized styrene butadiene rubber;
- about 10-30% by weight elastomeric binders comprising a mixture of ethylene vinyl acetate and ultra low density polyethylene;
- about 20-40% by weight fire retardant;
- and
- about 10-30% by weight high density polyethylene;
- to obtain a flexible slate replica shingle which is waterproof, weather resistant, hail resistant, simple to install, and is substantially impervious.
Dependencies are inferred from the claim text.