Improved thermoplastic grid melter.

摘要

Apparatus for melting and dispensing thermoplastic material including a hopper (11) for receiving solid thermoplastic material, a flow-through grid melter (12) secured to the bottom of the hopper and a reservoir (13) mounted beneath the grid melter. The grid melter includes multiple parallel ribs (39) extending across the width of the bottom of the grid melter. A single sinuous electrical resistance heater (50) is cast in situ into the ribs of the grid melter. The underside of the grid melter is provided with recesses (45) which function as accumulators to prevent the buildup of pressure on the underside of the grid melter upon remelt of solid thermoplastic material located above the level of the top of the grid melter.