WOOD-PLASTIC COMPOSITE MATERIAL

摘要

The present document describes a composite material comprising plastic, rock dust and sawdust in predetermined proportions. In embodiments the material comprises recycled plastic, limestone and hemlock or cedar sawdust. There are also disclosed methods for making the composition and shingles made using the composition.

主权项

1. A composite material comprising:
a) between about 2% to about 5% w/w low density plastic; b) between about 30% to about 38% w/w high density plastic; c) between about 0% to about 40% w/w rock dust; d) between about 20% to about 50% w/w sawdust; and e) a coupling agent.