Patent ID: 11904342
Assignee: AQUACAR GROUP SP. Z O.O.
Field: Chemical engineering (Chemistry)
Classification: CPC B  C  F | IPC B  C

Claim 13:
14. A method for spraying hot-melt adhesive onto glued surfaces using a system for spraying hot-melt adhesive onto glued surfaces comprising a melter (61) to heat hot melt adhesive, an air compressor (60), a power and control system (63), and a gun (10) connected to the melter (61) by a pipe (53) with screw connectors (54, 55) through which the heated hot melt adhesive flows, and connected to the air compressor (60) by an air pipe (56) with screw connectors (57, 58) through which the compressed air flows, and having a nozzle (20) with a hot melt adhesive outlet (21) and a compressed air outlet (23) directed towards surfaces to be bonded, wherein to an intake port of the gun through the pipe (53) through which the hot-melt adhesive flows fitted in a hose (50) inside its insulating layer with a throughput between 0.5 kg/h and 1.5 kg/h, is supplied under a pressure of 1200 kPa to 4200 kPa, a hot melt adhesive with a viscosity ranging from 2500 mPa·s to 2800 mPa·s and a density ranging from 0.8 kg/dcm3 to 1.4 kg/dcm3, heated to a temperature between 120° C. and 200° C., and through the air pipe (56) with a throughput of 0.1 m3/min. to 0.6 m3/min., placed in the hose (50) in its insulating layer in the area of the pipe through which the hot-melt adhesive flows, air is supplied at a pressure of 100 kPa to 1000 kPa to an air ferrule of the gun.