Application of PUR Hot Melt Adhesive: Textile

With the application of hot melt adhesives and their bonding technology in the textile industry, the classic sewing technology for textiles and fabrics has been replaced by bonding technology, thus saving fabric and sewing thread and increasing production efficiency. In recent years, PUR hot melt adhesives have also been used in large quantities in the manufacture of non-woven fabrics. PUR hot melt adhesives are widely used as garment linings, medical materials, filter materials, polishing sheets, dinner cloths, blankets, synthetic leather, insulating cloths, etc.

The main adhesive for textile applications is PUR hot melt adhesive. The use of PUR hot melt adhesives must first take full account of the properties and characteristics of the fiber fabric. In addition to the bonding properties of PUR hot melt adhesives themselves, it is more important to consider the washability and handedness of the fibers. Commonly used PUR hot melt adhesive for polyamide fiber, polyester fiber, wool and other fabrics are not good enough bonding performance. In order to make it modified and suitable for the requirements of the fabric, often use tetrachloroethylene, trichloroethylene and other chlorinated hydrocarbon solvents and turpentine as the solvents, and also to improve its agglutination force can also use good dry cleaning resistant polymers, such as copolymer nylon, polyurethane and other adhesives for the base material.

Especially for synthetic fibers, due to their own shortcomings such as easy discoloration, melting, shrinkage and hardening of hand feel when heated, the adhesive is required to have certain water resistance, high temperature resistance, and no resistance to heat and light. Yellowing and non-discoloring, this type of adhesive also requires less dosage, high adhesion, good operability and processing performance, etc. PUR hot melt adhesive has the above characteristics. In order to achieve a satisfactory bonding effect, different measures are taken for different bonding media. For example, the heat resistance of acrylonitrile fiber and acetate fiber is 80~120℃, the heat resistance temperature of PP fiber, nylon and polyester fiber is 160~180℃, and the heat resistance temperature of cotton and linen medium is generally 180~200℃. When using hot melt adhesive, it is necessary to maintain its fluidity at a similar temperature. Although the temperature is too low, although there is fluidity, it is easy to reduce the adhesive force and heat resistance of the adhesive. The copolymer nylon (nylon 12) can reduce the softening point, but also can improve the adhesion, it has good adhesion to almost all materials.

The hot-melt adhesive technology that has been used in fiber fabric products is generally a solid adhesive made of thermoplastic polymer as the base material and melt-mixed with tackifier, plasticizer and antioxidant. , free of solvents and moisture. Therefore, there is no need for drying equipment and drying time, just apply the adhesive with a coating machine and pressurize it to complete the bonding.

If you encounter hot melt adhesive permeability does not work, then the quality of hot melt adhesive on the question mark. We recommend that you must give priority to good qualifications, time and experience of hot melt adhesive manufacturers hot melt adhesive research and development, quality inspection team is also very important, and we Purking in China, the hot melt adhesive we know better and give answers. Contact us now to know our hot melt adhesive story and learn about hot melt adhesive application, Customize the best and most applicable and preferable adhesive for you!