Application of reactive polyurethane hot melt adhesives

Due to the excellent properties of reactive polyurethane hot-melt adhesives, it is possible to switch to moisture-curing reactive hot-melt adhesives for bonding where hot-melt adhesives or reactive adhesives were originally used for bonding. Operation. Just because it must be strictly isolated from moisture during manufacture, storage and sizing, its promotion is limited to a certain extent, and it has not been commercialized in large quantities. In recent years, these problems have been gradually overcome due to breakthroughs in technology and equipment, which have partially replaced ordinary hot melt adhesives. Its application will be more extensive in the future.

1.Polyurethane Adhesives for Woodworking

Curing polyurethane adhesives used in the woodworking industry are liquid and used at room temperature. Usually it has high bonding strength, good flexibility and water resistance, and can bond with many non-wood substrates (such as textile fibers, metals, plastics, rubber, etc.). The strength and durability of polyurethane adhesives can meet the most stringent testing requirements.

2.Polyurethane Adhesives for Textiles

The general requirements for hot melt adhesives in textile processing are colorless and odorless, soft texture, fast bonding, resistance to dry and wet cleaning, glue can not affect the fabric, light resistance, etc. Polyurethane adhesives are fully compatible with textile processing.

3.Polyurethane Adhesives for Packaging

Flexible packaging is light and convenient, long-term preservation period, hygienic, easy to store and transport, easy to disassemble, less garbage and good shelf effect. Due to its excellent performance, polyurethane adhesive can bond film materials of different properties. A composite film for flexible packaging with various properties such as cold resistance, oil resistance, chemical resistance, transparency and wear resistance can be obtained together.

4.Polyurethane Adhesive for Construction

In addition to the advantages of non-toxicity, non-polluting, and convenient use, polyurethane adhesives also have advantages that other adhesives cannot match, namely excellent low temperature resistance, solvent resistance, aging resistance, ozone resistance and bacteria resistance. plays an important role in the application of packaging materials.

5.Polyurethane Adhesives for Automobiles

The introduction of a large number of lightweight metals, composite materials and plastics into new automotive structures has resulted in the continuous growth of automotive adhesives and sealants. The most widely used polyurethane adhesives in automobiles are mainly single-component wet Curing polyurethane sealants; structural adhesives for bonding glass fiber reinforced plastics and sheet molding composite materials, two-component polyurethane adhesives for interior parts and water-based polyurethane adhesives, etc.

PurKing offers reactive hot melt adhesives for polyolefins and polyurethanes in various supply formats, including reactive hot melt adhesives for furniture, textiles, automotive interiors, building materials, plastic packaging, etc. - to provide the highest requirements for quality and appearance.