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PUR Hotmelt Adhesive
PUR (Polyurethane Reactive) hot melt adhesive is a strong, flexible, moisture-curing adhesive applied hot, but unlike traditional hot melts, it chemically cross-links with air moisture for a durable, permanent bond resistant to heat, water, and chemicals, making it ideal for high-performance bonding in woodworking, automotive, textiles, and electronics where strength and environmental resistance are needed.
Key Characteristics
| Dual Bonding Mechanism: | Initially solidifies upon cooling (physical bond) and then chemically cross-links by reacting with moisture in the air or substrate to form a final structural bond. |
| Superior Durability:Â | Offers excellent resistance to water, heat, chemicals, and solvents once fully cured. |
| Versatile Adhesion:Â Â | Bonds well to a wide range of materials, including wood, plastics, metals, glass, ceramics, and textiles. |
| lexibility:Â Â Â Â Â Â | The cured bond line remains elastic, providing good impact and vibration resistance. |
| Solvent-Free:Â Â Â Â Â | These are 100% solid content formulations, meaning no VOC emissions. |
Common Applications and Recommended Products
PUR hot melts are used across various industries, from high-volume manufacturing to DIY and home repair, such as.Â
| Woodworking: | Used for edge banding, profile wrapping, and general furniture assembly due to their strength and the ability to eliminate the need for mechanical fasteners. |
| Automotive and Electronics: | Used for interior trim, electronic component assembly, and other applications that require resistance to temperature fluctuations and vibration. |
| Bookbinding:Â Â | Provides a durable spine that resists cracking, offering superior performance compared to traditional EVA glues. |
| Sponge/Textiles:Â Â | Used for laminating fabrics and other composites due to increased durability and superior washability |
| Flexible packaging:Â | It can be used to bond between 2 surfaces to replace 2K adhesive, which is difficult to operate, like films and foils, ideal for high-barrier pouches, sachets, and laminations needing reliable seals and sustainable performance. |
