Hot melt adhesive (PUR) in woodworking & furniture industry applications and advantages

1.Advantages of PUR products: high efficiency, energy saving, environmental protection

Due to the outstanding physical and chemical properties of polyurethane and a wide range of applicability, it will replace traditional adhesives to a certain extent, such as most industrial solvent-based adhesives, part of the EVA hot melt adhesive, part of the VAE water-based adhesives, part of the tri-formaldehyde adhesive, part of the water-based polyurethane adhesive PUD, 2K PU, etc..

Because PUR products can be efficient, energy saving and environmental friendly. In the flat paste market, PUR has a unique advantage over water glue, and in the edge sealing market, PUR can provide high quality furniture products, which is beyond the reach of EVA and will develop rapidly.

2.PUR wrapping, PUR flat paste, PUR sealing application introduction

What are the essential differences between PUR adhesives and ordinary hot melt adhesives? The difference mainly lies in the fact that ordinary hot melt adhesive will fall off when heated, but PUR will not. PUR polyurethane adhesive curing process requires two necessary conditions, namely humidity and temperature, the higher the temperature, the faster the curing; the higher the humidity, the faster the curing.

At present, the application of PUR in the international woodworking and furniture field includes three aspects: PUR wrapping, PUR flat paste, PUR sealing, among which, the application of PUR wrapping has been very mature.

PUR flat paste application is emerging on a large scale, flat paste application is emerging on a large scale reflected in these aspects. The upgrade of the end consumer: consumers turn more to light luxury clean and simple, personalized custom style; flat paste material complexity: flat paste material diversification, diversification of the combination of substrates lead to flat paste material complexity; consumer requirements for aesthetics, environmental protection is higher, the requirements of the adhesive is also very high, the need for adaptability, environmental protection.

PUR sealing in polyurethane PUR and ordinary hot melt adhesive performance comparison, PUR in bonding, cold resistance, heat resistance, solvent resistance, aging resistance and other aspects of obvious advantages.

Due to the special nature of PUR's sealing, it needs regular cleaning of the equipment, and the cost is slightly higher than EVA. However, good process and good products need the joint efforts of customers, equipment manufacturers and material suppliers.

PUR flat lamination substrate combination is very complex, the PUR adhesive adaptability requirements are very high, the requirements of the adhesive requirements such as transparent, which is much more complicated than the overlay, but Purking has been focusing on the research of PUR flat lamination adhesive, and is committed to meet the diversified needs of customers.