Suzhou Oushida Hot Melt Machinery Equipment Co., Ltd.

Precautions for PUR hot melt adhesive machine when changing glue

1. When cleaning the PUR polyurethane hot melt glue machine, the hot melt glue heating plate must be separated from the PUR hot melt glue barrel first. After the hot melt glue barrel of PUR polyurethane is separated from the heating plate of the PUR hot melt glue machine, all power supply shall be cut off under the condition of maintaining the pressure in the lifting cylinder.            

2. When the polyurethane hot melt adhesive machine is de barrel, the air pressure should be slowly pressurized from small to large. Under no circumstances, it is not allowed to use high-pressure gas directly to de barrel to avoid accidents.            

3. When the pressure plate of the heating plate of the PUR polyurethane hot melt adhesive machine is separated from the polyurethane hot melt barrel, the channel between the pressure plate and the pump body must be closed through the special mechanism on the pressure plate of the PUR hot melt adhesive machine before cleaning the residual glue of the PUR hot melt adhesive to prevent solidification.            

4. When cleaning the heating pressure plate of PUR hot melt adhesive machine, the staff must wear special high temperature resistant protective clothing and high temperature resistant gloves. Do not make the skin contact with the high temperature parts such as hot melt adhesive barrel, melting PUR hot melt adhesive and heating plate to avoid scalding.            

5. When the PUR hot melt glue machine is de barreled, the best way is to fill the 5 gallon hot melt glue barrel with dry nitrogen to avoid the direct use of dry compressed air. If the compressed air needs to be filled, the compressed air needs to be completely dried. And often check the use of desiccant.