Preparation Of Low Melting Point Thermally Bonded Polyester (Polyester) Filament Yarn

At home and abroad, the lowest melting point of the product is 110~130 degree single component low melting point. Polyester Filaments, however, have not seen market demand for such products. Domestic research in this field started late, so far no industrial products have been found. Because the melting point of low melting point modified polyester is very low and basically does not crystallize, it is difficult for industrial production. Therefore, the development of single component low melting point polyester filament yarn has important practical significance and economic value for solving the market demand of the product.

　　 Necessity and advantages of project construction

High vacuum and low temperature heating technology were used to dry polyester chips with melting point of 110 degrees. The moisture content of the chips reached the requirement of spinning and avoid agglomeration when drying. FDY spinning The spinning one-step spinning machine has high speed spinning, eliminating the post processing process, reducing the wastage, improving the output of the machine, improving the quality of the products and reducing the production cost. The low melting point polyester filament made of low melting point polyester with a melting point of 110 degrees centigrade is produced at a melting point of less than 20dtex, and the product quality is: the strength is more than 2.7cN/dtex, and the elongation is 40-50%. Project technology has applied for national invention patent, patent No.: 201110133629.X. The technology level of the project is at the international advanced level. At present, the project has formed mass industrial production, and the output rate of raw material input has reached 80-90%. The single component hot melt adhesive fiber has different application fields with the core composite fiber. The single component low melting point polyester fiber is heated and melted and has the function of adhesion and solidification. The fiber can be reused and is non-toxic and harmless, which is beneficial to environmental protection. The application of low melting point polyester fiber in the field of fiber composites has also attracted more and more attention. Using low melting point fiber as matrix composite material has good fluidity, mixing evenly with the reinforcing fibers, and improving the toughness and strength of the products. Bi-Sn fibre It is widely used in the fields of bonding and fixing for cables and electronic wiring, the core yarn of textile yarn, fancy yarn, soft and environment-friendly non-woven fabrics, ironing and environment-friendly fabrics, medical textiles, automotive interior fabrics or building heat insulation and sound insulation materials. Because of its characteristics of simple bonding, high strength, no pollution and low energy consumption, the fiber type adhesive has been widely used as a substitute for chemical adhesives, so it is known as "green adhesive". Especially with the introduction of environmental regulations and decrees in various countries, the use of such low melting point fibers instead of chemical adhesives has become the only choice. The demand for these low melting point fibers at home and abroad has increased dramatically.

　　 Project market prospect

The prospect of popularization and application is very good. The products are already in the coastal areas of the country, and the users of Sumitomo cable company in Japan, the British coats wire and its Mexico branch, Vietnam, Brazil, Sri Lanka, Russia and China Taiwan are being used in bulk or on trial. Due to the stable quality of products, it has won the praise of users at home and abroad, and its production and sales volume is increasing. The prospect is very promising. At present, the situation of supply exceeds demand. The single component hot melt adhesive fiber has different application fields with low melting point skin core composite (LMPET/PET) fibers. One component, low melting point hot bonding polyester (LMPET) filament is an indispensable product in the international and domestic markets, which can not be replaced by low melting point sheath core composite fibers.

　　 Main contents of project construction

The project is to build 1 production lines of low melting point hot bonding polyester (polyester) filament yarn, with an annual production capacity of 200 tons. The planned land will be 100 mu and the construction period will be 2 years.

Project investment estimation

The total investment of the project is about 200 million yuan, including 150 million yuan in construction investment and 50 million yuan in the bottom. Project expected revenue

After the project is completed and put into operation, the annual sales revenue will be more than 100 million yuan, and the net profit of self conversion will be more than 2 million yuan.