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Porous microfine denier polyamide 6 pre-oriented yarn, its preparation method and device

A technology of pre-oriented yarn and denier nylon, which is applied in the field of melt spinning of high molecular polymers. It can solve the problems of affecting wearing comfort, poor air permeability and dryness, and poor hand softness, so as to improve the uniformity of melt mixing and pressure stability. Sexuality, strong coloring, good product quality

Active Publication Date: 2012-06-27
WUJIANG YATAI CHEM TEXTILE
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  • Abstract
  • Description
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Problems solved by technology

[0003] At present, high-speed spinning technology is mainly used at home and abroad to prepare conventional varieties of nylon 6 pre-oriented yarns, and there are some shortcomings, such as coarse monofilament fineness, antistatic properties, dyeability, moisture absorption and moisture retention, and poor air permeability and dryness. The softness of the hand is also poor, which seriously affects its wearing comfort

Method used

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  • Porous microfine denier polyamide 6 pre-oriented yarn, its preparation method and device

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Embodiment 1

[0018] This embodiment provides a 75dtex / 144f porous micro-denier nylon 6 pre-oriented yarn. It is based on the production of conventional varieties of FDY equipment, including pre-crystallization, drying, screw melt extrusion devices, additive injectors are installed on the feed port of screw melt extrusion devices, spinning boxes, metering pumps, spinning components, spinning Plate spinning device, install a slow cooling heater under the spinneret, the height of the heating area is 100 ~ 120mm; install a ring blowing cooling device under the slow cooling heater; install the oiling cluster oil rack under the ring blowing cooling device , the distance away from the spinneret is 800 ± 50 mm; the winding forming device includes the first and second godet rolls, a pre-netting device and a winding machine, and the pre-netting device is placed on the first godet roll and Middle of the second godet.

[0019] The production process and conditions are as follows:

[0020] The relati...

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Abstract

The invention, relating to a melt spinning technique of a high-molecular polymer, provides a porous microfine denier polyamide 6 pre-oriented yarn, its preparation method and device. Random copolymer additive of methacrylate, maleic anhydride and styrene are added in the screw melt extrusion step, and the obtained pre-oriented yarn has the breaking tenacity of 3.20-3.70 cN / dex and the breaking elongation of 60-100 %. According to the invention, a routine FDY device and related production technology conditions are improved, the aggregation structure adjustment, high order orientation, and crystalline supramolecular structure in the stretch forming process of a spinneret are effectively controlled, the melt mixing uniformity and pressure stability are further increased, the winding tensile stress and unevenness of the yarn are effectively adjusted and controlled, and the after-stretching performance of the porous microfine denier polyamide 6 pre-oriented yarn is raised. According to the product provided by the invention, the maximum benefits of the enterprise can be achieved.

Description

technical field [0001] The invention relates to a high molecular polymer melt spinning technology, in particular to a process and equipment for preparing porous micro-denier nylon 6 pre-oriented yarns. Background technique [0002] Conventional nylon 6 pre-oriented yarns can be processed into fully drawn yarns, false twisted textured yarns and air-jet textured yarns. Divided into three major areas, namely clothing, industrial and decorative carpets. Clothing is mainly used as clothing material, and it occupies a stable market in sportswear, swimming suits, bodybuilding clothes, hosiery, etc., and is developing day by day; industrial use involves industry, agriculture, transportation, fishery and other fields; it is mainly used in carpets Household, hotel, car interior decoration and other fields. [0003] At present, high-speed spinning technology is mainly used at home and abroad to prepare conventional varieties of nylon 6 pre-oriented yarns, and there are some shortcomi...

Claims

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Application Information

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IPC IPC(8): D01F6/90D01F1/10C08F220/10C08F222/08D01D13/00
Inventor 管新海李海涛赵广兵
Owner WUJIANG YATAI CHEM TEXTILE
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