Hart dacron thread and its production technique

Abstract

The invention designs hart polyester yarns, wherein, specification parameters thereof are: the dezitex of a single tow is 308DTEX; the joint stock number is 16; the single fiber number is 19.25DTEX; the strength is 5.3CN/DTEX; the elongation is 13 percent; and the boiling water shrinkage is 3.5 percent. The technique for manufacturing the hart polyester yarns designed by the invention mainly comprises the procedures of slice transportation, drying, screw spinning box spinning, stretching, and convolution, and the like; the spinning viscosity loss is controlled to be less than or equal to 0.01dl/g; the screw pressure of the screw spinning box is controlled at 12 plus or minus 0.5MPA; the spinning speed is 4200m/min; spinneret orifices of a spinneret plate are arranged in U shape; high temperature resistant oil is adopted for the oiling technology and the oil tanker speed is 15r/min; a totally enclosed air duct is adopted for a lateral blow cooling device which is cooled by an additional cooling device; the drafting multiple during all-drafting involution is controlled to be more than 3.8 times; the temperature of a first hot roller is set to be 100 DEG C; the temperature of a second hot roller is set to be 175 DEG C; an involution forming central angle is controlled to be 4.7 degrees; and the molding tension for controlling a spinning cake is controlled to be below 35CN. The hart polyester yarns obtained in the invention is terylene filament between industry yarn and apparel screen. The hart polyester manufacturing technique of the invention conquers former technical difficulty that the hart polyester yarns with the specification can only be manufactured by using industry yarn equipment or by two-step textile.

Description

technical field [0001] The invention relates to a chemical fiber polyester yarn and the production technology of the chemical fiber polyester yarn. Background technique [0002] Now the competition in the chemical fiber market is becoming increasingly fierce, the types of products are constantly being updated, and the quality is also constantly improving. However, the scope of use of existing products is relatively small, and they are all oriented to industrial materials or clothing materials, covering both. The products in the scope of application are still blank, which is mainly due to the high difficulty of production of this type of products and the low production rate. Contents of the invention [0003] The purpose of this utility model is to provide a Hart polyester yarn with large monofilament fineness, high strength, small expansion and good toughness, which is between industrial materials and clothing materials, and its production technology in order to solve the ...

AI Technical Summary

Problems solved by technology

[0002] Now the competition in the chemical fiber market is becoming increasingly fierce, the types of products are constantly being updated, and the quality is also constantly improving. However, the scope of use of existing products is relatively small, and they are all oriented to industrial materials or clothing materials, covering both. The products in the scope of application are still blank, which is mainly due to the high difficulty in production of such products and the low production rate.

Images