A production process of isotactic ordered polyester slub yarn

A production process and technology of slub yarn, applied in filament/thread forming, textile and papermaking, melt spinning, etc., can solve the problems affecting product quality and fabric style market development prospects, unstable product quality, difficult to master the process, etc. problems, to achieve good market prospects, social and economic benefits, obvious cost-effective advantages, and good wearing comfort.

Active Publication Date: 2017-09-05
ZHONGRUN SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The slubs of the polyester slub yarn prepared by this method are large or small, and basically distributed randomly. Embrittlement, resulting in wool and broken ends; it is easy to cause uneven thick and thin slubs or excessively concentrated distribution of thick slubs, weak concave-convex feeling, poor air permeability, and stuffy feeling; secondly, the process is complicated and the product quality is unstable, which affects the fabric style And its quality, it is difficult to make super linen-like, wool-like style and efficacy, which will ultimately affect product quality, fabric style and market development prospects
Therefore, in order to obtain a better size and distribution of thick and thin slubs, stretching must be carried out under a very narrow range of stretching conditions, but it is difficult to master the process; at the same time, the size of thick and thin slubs decreases with the increase of winding speed. Small, resulting in low output, high cost, unstable product quality

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • A production process of isotactic ordered polyester slub yarn
  • A production process of isotactic ordered polyester slub yarn

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] 1. Polyester chips are dried and pre-crystallized

[0031] The slice drying process needs to be heated to 160-170°C. The softening point of ordinary slices is very low, and it is easy to form lumps to block the drying device or feeding pipe. Pre-crystallization improves the crystallinity of slices, so that the softening point can reach above 200°C, which is beneficial Drying went on smoothly. When drying, it is transported from the bottom of the drying tower to the drying tower to contact with the slices in reverse to make the slices dehydrate quickly, and the dry air takes the moisture out from the top of the drying tower.

[0032] The pre-crystallization temperature is 145°C, the residence time is 15min; the drying temperature is 170°C, the drying time is 4h, and the ventilation rate is 170Nm 3 / h, the dry air inlet dew point is -100°C. The production capacity is 300KG / h, and the moisture content of dry slices is ≤0.003%. The main performance indicators of polyeste...

Embodiment 2

[0058] 1. Polyester chips are dried and pre-crystallized

[0059] The pre-crystallization temperature is 155°C, the residence time is 10min; the drying temperature is 160°C, the drying time is 6h, and the ventilation rate is 180Nm 3 / h, the dry air inlet dew point is -100°C. The production capacity is 400KG / h, and the moisture content of dry chips is 0.0025%.

[0060] 2. Melting and spinning

[0061] In this embodiment, the micropores of the spinneret are arranged in a rhombus or in an array, forming an angle of 25° with the direction of the side blowing wind; the spinning temperature is 288°C, the specification of the spinneret is Φ95, and the micropores of the spinneret It is 0.28*0.54*36, the component composition is 20 / 280+40 / 240 mesh / g, and the initial pressure of spinning is 170bar.

[0062] 3. Cooling and forming by side blowing, oiling

[0063] In this embodiment, the micropores of the spinneret are arranged in a rhombus or array distribution arrangement, the side ...

Embodiment 3

[0069] 1. Polyester chips are dried and pre-crystallized

[0070] The pre-crystallization temperature is 150°C, the residence time is 12min; the drying temperature is 165°C, the drying time is 5h, and the ventilation volume is 175Nm 3 / h, the dry air inlet dew point is -100°C. The production capacity is 360KG / h, and the moisture content of dry chips is 0.0025%.

[0071] 2. Melting and spinning

[0072] In this embodiment, the micropores of the spinneret are arranged in a rhombus or array distribution, forming an angle of 20° with the direction of the side blowing wind; the spinning temperature is 286°C, the specification of the spinneret is Φ95, and the micropores of the spinneret It is 0.28*0.54*36, the component composition is 20 / 280+40 / 240 mesh / g, and the initial pressure of spinning is 160bar.

[0073] 3. Cooling and forming by side blowing, oiling

[0074] In this embodiment, the micropores of the spinneret are arranged in a rhombus or array distribution arrangement, ...

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Abstract

The invention discloses a production technology for orderly dacron bamboo node yarns of identical specification. The production technology for the orderly dacron bamboo node yarns of identical specification is characterized in that the production technology comprises the following steps that (1) polyester raw materials are sliced and conveyed to a material wetting bin, and ventilation drying is carried out after pre-crystallization; (2) under the melting condition, slices enter a screw extrusion machine, and then enter a spinning box after filtration; (3) the slices enter a spinning assembly for filament production after being metered through a metering pump; (4) side air blasting cooling is carried out, and oil is applied; (5) traction, stretching and heat shaping are carried out; (6) winding and forming are carried out through a winding head, and products are formed. The identical-specification orderly dacron bamboo node yarns prepared through the production technology have super-linen-imitated and super-wool-imitated styles and effects of being moisture absorbable, breathable, dry and comfortable in hand feeling, full in touch sense and good in drapability and wearing comfortableness and the like, and have the advantages of having the super-linen-imitated and super-wool-imitated styles and effects and being good in function and performance, obvious in cost performance and the like.

Description

technical field [0001] The invention relates to a production process of slub yarn, in particular to a production process of isotactic and ordered slub yarn. Background technique [0002] At present, the R&D and production of polyester slub yarn mostly adopts uneven stretching with reduced spinning speed and lower draft ratio or two-step deformation processing from POY process to DTY process, as well as composite slub yarn and coated bamboo The preparation method of slub yarn is used to obtain polyester slub yarn. The slubs of the polyester slub yarn prepared by this method are large or small, and basically distributed randomly. Embrittlement, resulting in wool and broken ends; it is easy to cause uneven thick and thin slubs or excessively concentrated distribution of thick slubs, weak concave-convex feeling, poor air permeability, and stuffy feeling; secondly, the process is complicated and the product quality is unstable, which affects the fabric style And its quality, it...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01D5/20D01D5/08D01D5/088D01D5/12
CPCD01D5/20
Inventor 高忠林管新海李敏敏
Owner ZHONGRUN SCI & TECH
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