Recovery of recycled plastics in granular form

Details Recovery of recycled plastics in granular form Recovery of recycled plastics in granular form

1998-01-14

1999-08-10

Thornton, Krisanne

Chemical apparatus and process disinfecting, deodorizing, preser

Physical type apparatus

Means separating or dissolving a material constituent

422281, 422284, 422286, 422901, 241DIG38, 521 40, 264920, 425 74, 425 75, 425223, B01D 1102

Patent

active

059355360

ABSTRACT:
Apparatus and method for reclaiming expanded synthetic resin wastes in a form suitable for subsequent injection molding. The apparatus includes a tank containing a solvent having a pump for pumping dissolved resin wastes to an evaporator. The evaporator comprises an endless belt on which dissolved resin waste is deposited and precipitates in the form of a thin film. A heater is disposed below the belt to expedite separation of solute and solvent by evaporation. A blower disposed within a housing enclosing the endless belt establishes air circulation over the belt, further promoting evaporation. The thin film is wound on a roller and subjected to a heated roller to fuse the many thin film strata into a solid, generally cylindrical mass. The solid mass is then comminuted by a granulator. Evaporated solvent is recovered in a condenser and is reused.

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