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For second-year textile engineering students, the department arranged this five-day internship. Students are required to have a basic understanding of the major they are studying. Through internship, we will: ① Understand the types of chemical fibers, take the production processes of polyester and nylon as examples, and master the basic processes of chemical fiber production. ② Master the spinning process and understand the main equipment in the cotton spinning process, that is, the main equipment used in the cleaning, carding, doubling, coarse and fine processes in the spinning production process; understand the concept of cotton spinning blowing and carding. ③ Understand the weaving process, the main structure of the loom and the five four major movements of the loom: shedding, weft insertion, beating up, let-off, and take-up. Understand the principles of weft insertion on shuttle looms and shuttleless looms. ④Understand the process of dyeing and finishing, the main processes of dyeing and finishing, and the main methods of dyeing and finishing. ⑤ Understand the knitting process and master the types and applications of knitted products; ⑥ Understand the clothing production process and the main types of clothing machinery. From June 23rd to 27th, we visited textile factories such as Guangdong United Chemical Fiber Dyeing and Weaving Co., Ltd., Guangdong Chunyan Textile Co., Ltd., Xinhui Defa Garment Co., Ltd., Kaiping Qifan Ribbon Factory, and Kaiping Benda Textile Co., Ltd.

1. Guangdong United Chemical Fiber Dyeing and Weaving Co., Ltd.

Instructors: Wang Xiaomei, Zhang Yanming

Under the leadership of Teacher Zhang and Teacher Wang, we came to the internship The first stop - United Chemical Fiber Dyeing and Weaving Co., Ltd. United Chemical Fiber Dyeing and Weaving Co., Ltd. has introduced the most advanced sizing machines, Japanese shuttleless spinning machines, high and low temperature dyeing machines, setting machines, gluing machines, calenders and other equipment to realize production from warping, sizing, weaving, One-stop service of bleaching, dyeing, gluing and styling. Clothing fabrics and industrial polyester cloth, nylon cloth; Oxford cloth, taffeta cloth, high-roots cloth, Shishi cloth, Taslon cloth; PA, PU tape, silver tape, gold tape, pearl tape and colored tape, breathable tape Air cloth; UV resistant cloth, fire retardant cloth. Under the leadership of the workshop supervisor in the factory, we entered the first workshop, and we first visited the first process: sizing. The purpose of sizing the raw yarn is to improve the evenness of the yarn and prepare it for the next process - doubling the warp. I regret that the sizing machine was not started because I did not really see how the sizing machine works. Next, the sized yarn is sent to the doubling machine for doubling. According to the workshop supervisor, the number of combined warps is to combine a certain number of warp yarns together according to the customer's requirements, and the weft yarns are used directly. After the yarn doubling is completed, the next process is carried out: drawing on the heald and drawing on the reed. First, a special hook is used to thread the heald, and then the yarn is threaded on the steel reed. This process seems very tedious, but it is a necessary process for weaving.

We then went to the weaving workshop, which was a very noisy workshop. The noise from dozens of shuttleless looms was unbearable. There are two shuttleless water-jet looms in this workshop: shedding machine and dobby machine. Here you can have a rough understanding of the weaving process, the main structure of the loom, and the five four major movements of the loom: shedding, weft insertion, beat-up, let-off, and take-up. After the woven cloth is inspected, it is sent to the dyeing and finishing workshop.

The first feeling when entering this workshop is the heat. A row of high-temperature and high-pressure dyeing machines are working continuously. Before the cloth is dyed, it has to go through a process of desizing. Desizing is for better dyeing. After the cloth is fed into the machine, the dye is sucked into the machine through a small steel barrel next to the dyeing machine. After high temperature and high pressure, the dye is firmly combined with the cloth. Going in again are two rows of low-temperature dyeing machines. High temperature and low temperature are relative terms, and low temperature is also a higher temperature. Generally speaking, depending on the color fastness requirements of different fabrics, as long as the fabric is dyed with a high-temperature dyeing machine, the lining will be dyed with a low-temperature dyeing machine. The dyed cloth is then spread out by the spreading machine and sent to the dryer for drying. The final product is shaped by the setting machine. Some cloths are also sent to the gluing machine for gluing. Gluing is only used for waterproofing, UV protection, etc. need.