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                           Precautions when changing glue for PUR hot melt adhesive machine

1. When cleaning the PUR polyurethane hot melt machine, the hot melt adhesive heating plate must be separated from the PUR hot melt adhesive barrel. After the PUR polyurethane hot melt adhesive barrel is separated from the PUR hot melt machine heating plate, it should be kept in the lifting cylinder. In case of stress, cut off all power sources.

2. When the polyurethane hot melt adhesive machine is taking off the barrel, the air pressure should be gradually increased from small to large. In any case, it is not allowed to use high-pressure gas directly to take off the 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, before cleaning the remaining glue of the PUR hot-melt adhesive, the special mechanism on the pressure plate of the PUR hot-melt machine must be used to close the connection between the pressure plate and the pump body between channels to prevent curing.

4. When cleaning the heating pressure plate of the PUR hot-melt adhesive machine, the staff must wear special high-temperature resistant protective clothing and wear high-temperature-resistant gloves, and do not allow the skin to touch the hot-melt adhesive barrel, molten PUR hot-melt adhesive and heating plate and other high-temperature parts , to avoid burns.

5. When the PUR hot melt adhesive machine is taking off the barrel, the best way is to fill the 5 gallon hot melt adhesive barrel with dried nitrogen, avoid using undried compressed air directly, if you need to fill the compressed air, Thorough drying of compressed air is required. And check the usage of the desiccant frequently.

6. After the PUR polyurethane hot-melt adhesive machine is separated from the hot-melt adhesive barrel, the residual PUR hot-melt adhesive on the hot-melt adhesive pressure plate must be cleaned immediately and thoroughly. When cleaning the hot-melt adhesive plate of the PUR hot-melt adhesive machine, no Hard tools to prevent scratching the pressure plate Teflon coating.

7. When cleaning the pressure plate of the PUR hot-melt adhesive machine with special structure, the residual PUR polyurethane hot-melt adhesive cannot be completely cleaned in a short time because of the special structure of the PUR hot-melt adhesive machine heating plate, and the residual PUR polyurethane hot-melt adhesive must be cleaned Use dry nitrogen protection, and the time to clean up the residual glue should not exceed 10 minutes. Do not use any hard tools to clean the heating plate of the PUR hot melt machine.

8. After cleaning the pressure plate of the PUR hot melt adhesive machine, immediately press the pressure plate into a new PUR hot melt adhesive barrel to avoid exposing the pressure plate to the air for a long time. When pressing the heating plate into the rubber barrel, the air pressure of the lifting cylinder should be from small to large. Do not use high-pressure gas directly to prevent accidents and pay attention to the safety of operators.