Textile Technology: Spinning Technology Of Milk Fiber

about Milk fiber The pretreatment of spinning is critical. Because of the smooth surface and poor cohesion of milk protein fiber, electrostatic phenomena will appear in spinning process. Shanghai Zheng Jia Milk Technology Co., Ltd. and Shanghai seventeen cotton mill have studied for many years that in order to improve their spinnability, pre processing, such as pre loosening, humidification and antistatic treatment of milk protein fiber before spinning, will make the next spinning process smoothly. The key points in every process of milk fiber spinning will be introduced one by one at this stage.

Opening and clearing process

Because the milk protein fiber has poor cohesion and a higher specific resistance, it is easy to produce static electricity in the process of winding, and the cotton roll is easy to adhere and fluffy. In order to make the cotton roll with high and uniform alignment, the following measures are taken: strictly control the temperature and relative humidity of the workshop, reduce the influence of static electricity; spray proper antistatic agents on the cotton rolls, but pay attention to the proper amount. Otherwise, it will cause the phenomenon of winding rollers in the future carding process; strictly control the quantity of the cotton rolls; otherwise, it will also bring adverse effects on the subsequent processes. It is suggested that the "two boxes and two knives" short process should be adopted to carry out the technological principles of "small beam grabbing, multiple combing, less beating, more collecting and less dropping, light weight, low speed and anti sticking", which can reduce the speed of the beater, enhance the carding and opening effect, and reduce fiber damage. The cotton roll is covered with plastic film and stored for 4-8 hours. The operation is strictly advanced.

　　 Carding working procedure

The difficulty in producing milk protein fiber during spinning is mainly concentrated in this process. The problems that are reflected in the process are concentrated on the cotton sliver falling or cotton net drift head caused by stripping cotton transfer, and the broken cotton sliver caused by poor binding force. Therefore, the main principles of carding machine are gentle combing, smooth transfer, light weight, low speed and middle distance. Raise the cotton plate properly and lower the speed of the roller, cylinder and cover plate. Increase line speed ratio between cylinder and roller. Properly enlarge the gap between the cover and the cylinder, fill the cover, and improve the quality and clarity of the web. Reduce doffer speed appropriately. The new type of chemical fibre special spinning clothing can be used to reduce fiber precipitation and facilitate fiber transfer. Non spinning spinning truck can consider temporarily closing the three suction device to reduce fiber loss. At the same time, it is recommended to install leather guiding device. It is better to control the total droppings.

Drawing process

Because of milk Protein fiber Good elasticity and good uniformity, but less dimensional curl and poor cohesion. Therefore, the drawing process should focus on improving fiber straightness and reducing weight unevenness, reducing the difference between the stations, so as to ensure the difference of color difference after yarn formation. It is beneficial to parallel stretching and improving evenness of the fibers, and the speed can be reduced properly, and the winding roller and cots can be reduced. The caliber of the bell mouth is small enough to restrain the bars and improve the drying of the strips. Proper stretching of tension draft can make the sliver roll tightly. Smooth surface, reduce weight unevenness, pressurize and enlarge properly, and treat resin coating or acid treatment on the surface of the cots.