Construction material, composition and process for producing the same
OwnerPaul Bracegirdleinventor
Life of this patent
Estimating the term…
Abstract
A construction product made from an extrudable composition formed into various shapes for use in deck-building systems and other applications is disclosed. The extrudable composition prepared from polyethylene polymeric compounds, such as HDPE, and mixed with a mineral such as fiberglass, mineral wool or sand, along with a pigment, has sufficient strength and other advantageous properties to be useful for those construction applications.
Claims20
A process for manufacturing a composite structural product having an established exterior dimensional profile and made from thermoplastic and other materials, the process comprising the steps of:
- introducing into an extruder at an effective temperature and extruding therefrom a blended homogeneous mixture having about 90 to 95 percent, based on the total weight of said mixture, of a thermoplastic polyethylene-type polymeric compound, and having about 5 to 10 percent, based on the total weight of said mixture, of a mineral;
- introducing said extruded homogeneous mixture into a die having an established dimensional profile;
- and
- forming from said die a structural product.
A process for manufacturing a composite structural product having an established exterior dimensional profile and made from thermoplastic and other materials, the process comprising the steps of:
- introducing into an extruder at an effective temperature and extruding therefrom a blended homogeneous mixture having about 90 to 95 percent, based on the total weight of said mixture, of a thermoplastic polyethylene-type polymeric compound, and having about 5 to 10 percent, based on the total weight of said mixture, of a mineral selected from the group consisting of fiberglass minerals, mineral wool, and sand minerals;
- introducing said extruded homogeneous mixture into a die having an established dimensional profile;
- forming from said die a structural product;
- and
- adding a layer on at least a portion of said structural product in such a way that the material or materials forming said layer fuse to said product and cause said portion to become roughened by the presence of said material or materials and wherein said material is selected from the group consisting of a polymeric compound, polymeric polyethylene compound, sand minerals, metal particles, and metal oxide particles.
An extrudable composition for making a structural product, comprising a blended mixture of:
- about 90 to 95 percent, based on the total weight of said mixture, of a thermoplastic polyethylene-type polymeric compound;
- and
- about 5 to 10 percent, based on the total weight of said mixture, of a mineral selected from the group consisting of fiberglass minerals, mineral wool, and sand minerals,
- wherein said extrudable composition formed into a cured structural product has coefficient of thermal expansion of no greater than about 3×10−5 to 5×10−5 inches/inch-° F.
Dependencies are inferred from the claim text.