Polymer bonding grains of sand using styrofoam fluff as an adhes

Plastic and nonmetallic article shaping or treating: processes – Forming articles by uniting randomly associated particles – With liberating or forming of particles

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264 37, 264122, 264DIG69, B29C 4302

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active

050412507

ABSTRACT:
A method of making useful objects by coating grains of sand with a thin film of styrene. The styrene coating is made by making styrofoam into styrofoam fluff by providing a plurality of tearing members around a cylinder. Rotating the cylinder and tearing members and subjecting the surface of the styrofoam to the rotating tearing members. The moving tearing members rupture the styrofoam surface and tear away pieces of the styrofoam, forming styrofoam fluff. The fluff has a sectional density less than the styrofoam from which the styrofoam fluff was made. The styrofoam fluff is mixed with sand, the mixture heated, the styrofoam fluff melts and forms a coating on the sand particles.

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