Polyester hot melt adhesive has a wide range of applications. Functional and modified hot melt adhesives are research hot spots.

Polyester refers to a polymer containing ester groups in the main chain. It is made of dimethyl terephthalate, isophthalic acid, hexylene glycol and butylene glycol and other polyacids and polyols as raw materials. Through esterification reaction, ester It is produced through exchange reaction and polycondensation reaction, and can be divided into two categories: thermoplastic polyester and unsaturated polyester according to their chemical properties. Polyester hot melt adhesive is a kind of hot melt adhesive formulated with polyester resin as a binder. It is one of the main categories of hot melt adhesive and can be made into powder, granular, ribbon and other forms.

Polyester hot melt adhesive can be divided into three categories based on different chemical structures: copolyester hot melt adhesive, polyamide polyester hot melt adhesive, and polyether polyester hot melt adhesive. Polyester hot melt adhesive has the advantages of good bonding strength, good resistance to dry and wet cleaning, high heat resistance/cold resistance, and excellent electrical properties. It is widely used in electrical appliances, carpet backing, clothing processing, fabric processing, and manufacturing. The shoe industry, heat sealing, packaging services, composite films, automobile parts assembly, reinforcement materials and other fields generally require the use of specialized coating equipment for construction.

In recent years, in order to vigorously develop my country’s polymer material subdivision industry, encourage the development of the hot melt adhesive industry, and promote environmentally friendly and energy-saving hot melt adhesive products, the Chinese government has successively issued the “Thirteenth Five-Year Plan for the Adhesive and Adhesive Tape Industry” , “Industrial Structure Adjustment Guidance Catalog (2019 Edition)”, “New Materials Industry Development Guide”, “14th Five-Year Plan” and other policies. Against this background, my country’s polyester hot melt adhesive has broad development prospects.

According to the “Polyester Hot Melt Adhesive Industry In-depth Market Research and Investment Strategy Suggestions Report 2023-2027” released by the Industrial Research Center , polyester hot melt adhesive has excellent performance and is widely used. Polyester hot melt adhesive has strong adhesion, oil resistance, water resistance, heat resistance, cold resistance and flexion resistance. It is a hot melt adhesive for shoes with excellent performance. Because polyester hot melt adhesive contains -C-O- chemical bonds, it has excellent flexibility, is resistant to cleaning, antioxidant, colorless and odorless, and cures quickly. It can bond well to natural fibers such as cotton, linen, and wool, as well as polyester, nylon, etc. Synthetic fibers are widely used in carpet backing, clothing processing, fabric processing and other industries. Among them, polyester hot-melt adhesive has the largest demand for clothing hot-melt linings. Polyester hot melt adhesive has excellent electrical properties and is commonly used in the electrical industry for fixing transformer joints and deflection coils.

Industry analysts said that at present, the development trend of polyester hot melt adhesive in my country is good. On the one hand, my country’s polyester hot melt adhesive products are gradually developing toward functionalization. Flame-retardant polyester hot melt adhesives, color-developing polyester hot melt adhesives, polyester hot melt adhesives for 3D printing, and reactive polyester hot melt adhesives have been developed. Melt glue and other products.

On the other hand, the modification of polyester hot melt adhesives has been a hot research topic in recent years. For example, with the help of flow accelerators, the fluidity of polyester hot melt adhesives can be improved without changing the molecular weight; through copolymerization modification, high performance can be prepared Polyester hot melt adhesive; using PET as depolymerization-comonomer, high-adhesion polyester hot melt adhesive is prepared through macromolecular chain exchange reaction.