Recycled plastic composite composition

Abstract

A composition for a recycled plastic composite composition, and a method of making the composite composition, is provided. The composite composition includes recycled EVA from 30% to 80% and a stone powder from 20% to 70%; percentages by weight.

1 .- 21 . (canceled) 
     
     
         22 . A method of preparing a recycled plastic composite, the method comprising:
 mixing together components to form a dry composition, the components comprising, based on the total composition:
 30 to 80 wt. % of recycled plastic; and 
 20 to 70 wt. % heavy calcium carbonate; 
 melting the dry composition to form a viscous liquid composite; 
   conveying the viscous liquid composite to a mold;   heat pressing the viscous liquid composite in the mold to form a molded composite;   recirculating cooling water to de-mold the molded composite to form a de-molded composite;   immersing the de-molded composite in water; and   completing the heat pressing to obtain the recycled plastic composite.   
     
     
         23 . The method of  claim 22 , wherein the dry composition is heated to about 160° C. to 240° C. 
     
     
         24 . The method of  claim 22 , further comprising feeding the dry composition to a screw melting machine with electric heating for melting of the dry composition. 
     
     
         25 . The method of  claim 22 , wherein recirculating further comprises circulating cooling water about the mold. 
     
     
         26 . The method of  claim 22 , wherein the recycled plastic comprises ethylene-vinyl acetate copolymer, chlorinated polypropylene, polyvinyl chloride, polyethylene, or a combination thereof. 
     
     
         27 . The method of  claim 22 , wherein the recycled plastic comprises ethylene-vinyl acetate copolymer. 
     
     
         28 . The method of  claim 22 , wherein the recycled plastic consists of ethylene-vinyl acetate copolymer. 
     
     
         29 . The method of  claim 22 , further comprising adding 1 to 15 wt. % talc to the composition. 
     
     
         30 . The method of  claim 29 , wherein a size of heavy calcium carbonate is from 600 mesh to 1200 mesh. 
     
     
         31 . A method of preparing a recycled plastic composite, the method comprising:
 mixing together components to form a dry composition, the components comprising, based on the total composition:
 30 to 80 wt. % of recycled plastic; 
 20 to 70 wt. % heavy calcium carbonate; and 
 1 to 15 wt. % talc; 
   melting the dry composition to form a viscous liquid composite;   conveying the viscous liquid composite to a mold of a hydraulic press;   heat pressing the viscous liquid composite in the mold to form a molded composite;   cooling the molded composite in the mold for 5 to 15 minutes;   recirculating cooling water to further cool the molded composite and to de-mold the molded composite to form a de-molded composite;   immersing the de-molded composite in water; and   completing the heat pressing to obtain the recycled plastic composite.   
     
     
         32 . The method of  claim 31 , wherein the dry composition is heated to about 160° C. to 240° C. 
     
     
         33 . The method of  claim 31 , further comprising feeding the dry composition to a screw melting machine with electric heating for melting of the dry composition. 
     
     
         34 . The method of  claim 31 , wherein the recycled plastic comprises ethylene-vinyl acetate copolymer, chlorinated polypropylene, polyvinyl chloride, polyethylene, or a combination thereof. 
     
     
         35 . The method of  claim 31 , wherein the recycled plastic comprises ethylene-vinyl acetate copolymer. 
     
     
         36 . The method of  claim 31 , wherein a size of heavy calcium carbonate is from 600 mesh to 1200 mesh. 
     
     
         37 . A method of forming a molded article, the method comprising:
 mixing together components to form a dry composition, the components comprising, based on the total composition:
 30 to 80 wt. % of recycled plastic; and 
 20 to 70 wt. % heavy calcium carbonate; 
   melting the dry composition to form a viscous liquid composite;   conveying the viscous liquid composite to a mold;   heat pressing the viscous liquid composite in the mold to form a molded composite;   recirculating cooling water to de-mold the molded composite to form a de-molded composite;   immersing the de-molded composite in water; and   completing the heat pressing to obtain the molded article.   
     
     
         38 . The method of  claim 37 , wherein the molded article is a flower pot. 
     
     
         39 . The method of  claim 37 , further comprising adding 1 to 15 wt. % talc to the composition. 
     
     
         40 . The method of  claim 37 , wherein the recycled plastic comprises ethylene-vinyl acetate copolymer, chlorinated polypropylene, polyvinyl chloride, polyethylene, or a combination thereof. 
     
     
         41 . The method of  claim 37 , wherein the molded article is heat resistant between −40° C. to −80° C.