Apparatus of shrinking volumes of waste foamed plastics
First Claim
1. Apparatus for treating materials comprising foamed thermoplastic synthetic resins, said apparatus comprisinga main body frame having a crushing room inwardly tapered towards its lower part;
- a hopper in communication with said crushing room and into which said materials are charged;
a crushing shaft rotatably traversing said crushing room, said crushing shaft comprising a plurality of crushing vanes for crushing said materials and having a radius of gyration sufficient to extend into said hopper so as to destroy the lower layer of said materials within said hopper;
a sending cylinder disposed in said main body frame outside of said crushing room, said sending cylinder having receipt opening means in communication with said crushing room for receiving said materials from said crushing room;
said sending cylinder housing a rotatable shaft having a screw vane for moving said materials along its axial length;
a compressing cylinder through which said rotatable shaft is partially disposed, said compression cylinder having an inlet and an outlet, said inlet being in communication with and connected in series to said sending cylinder;
the diameter of said inlet being larger than the diameter of said outlet so that said compressing cylinder is tapered;
a heating cylinder for heating said materials to a temperature lower than the temperature at which said materials completely melt, so as to soften and fuse said materials one to another, said heating cylinder having an inlet and an outlet, said inlet being in communication with said outlet of said compressing cylinder;
extruding nozzle means in communication with said outlet of said heating cylinder for extruding said materials in an elastic state;
rotating cutting means disposed about said extruding nozzle means for cutting said extruded materials; and
exhausting means comprising receiving means for receiving the cut materials and gas flow means for exhausting said materials out of said apparatus.
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Accused Products
Abstract
The present invention relates to an apparatus for shrinking volumes of waste foamed plastics which have been used as packing materials. The waste plastic materials are thrown into a hopper provided on a crushing room having an opening in an upper part and tapering towards its lower part. A plurality of crushing vanes having a radius of gyration of length reaching within said hopper rotate in said crushing room, to break the foamed plastics into shreds. The broken plastics flow into a sending cylinder through a receipt opening toward the side wall of the crushing room, and are sent forward by screw vanes within the sending cylinder. Subsequently, the waste plastics are compressed in a compression cylinder connected in series to the sending cylinder and further softened and de-foamed by a heating cylinder and exhausted through a nozzle provided at the end of the housing cylinder. Extruded bar like shrinked resins are cut into chips by a rotating cutter and exhausted from the apparatus by air flow.
54 Citations
12 Claims
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1. Apparatus for treating materials comprising foamed thermoplastic synthetic resins, said apparatus comprising
a main body frame having a crushing room inwardly tapered towards its lower part; -
a hopper in communication with said crushing room and into which said materials are charged; a crushing shaft rotatably traversing said crushing room, said crushing shaft comprising a plurality of crushing vanes for crushing said materials and having a radius of gyration sufficient to extend into said hopper so as to destroy the lower layer of said materials within said hopper; a sending cylinder disposed in said main body frame outside of said crushing room, said sending cylinder having receipt opening means in communication with said crushing room for receiving said materials from said crushing room;
said sending cylinder housing a rotatable shaft having a screw vane for moving said materials along its axial length;a compressing cylinder through which said rotatable shaft is partially disposed, said compression cylinder having an inlet and an outlet, said inlet being in communication with and connected in series to said sending cylinder;
the diameter of said inlet being larger than the diameter of said outlet so that said compressing cylinder is tapered;a heating cylinder for heating said materials to a temperature lower than the temperature at which said materials completely melt, so as to soften and fuse said materials one to another, said heating cylinder having an inlet and an outlet, said inlet being in communication with said outlet of said compressing cylinder; extruding nozzle means in communication with said outlet of said heating cylinder for extruding said materials in an elastic state; rotating cutting means disposed about said extruding nozzle means for cutting said extruded materials; and exhausting means comprising receiving means for receiving the cut materials and gas flow means for exhausting said materials out of said apparatus. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification