Plastic and nonmetallic article shaping or treating: processes – Forming articles by uniting randomly associated particles – Autogenously or by activation of dry coated particles
Patent
1982-02-08
1984-05-08
Anderson, Philip E.
Plastic and nonmetallic article shaping or treating: processes
Forming articles by uniting randomly associated particles
Autogenously or by activation of dry coated particles
56377, 141266, 141280, 198526, 198616, 209241, 209245, 209257, 209261, 264109, 264DIG7, 264DIG69, 425 831, 425371, 425817R, B29D 2700, B32B 516, B32B 518, B32B 2740
Patent
active
044473826
ABSTRACT:
An apparatus for making a foam pad for carpets has features to improve the quality of the pad. The apparatus has a hopper section for receiving foam particles coated with heat activated bonding agent. An extruder section compresses the particles as they are moved continuously along a conveyor belt. A heat section heats the particles after being compressed. A raking device in the hopper section rakes the top of the body of particles prior to entering the extruder section. The raking device rakes in a direction opposite to the movement of the body of particles. The raking device can be raised and lowered to change the level of the particles, and thus the density. The raking device also forms the top of the body of particles with upwardly tapered corners. A plate located below the hopper and extruder sections supports the lower conveyor belt. The heat section uses steam chambers with a perforated top, which also serves to support the conveyor belt.
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Foster Larry W.
Spurlock Robert C.
Anderson Philip E.
Bradley James E.
MPI, Inc.
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