Production technology for orderly dacron bamboo node yarns of identical specification

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

Active Publication Date: 2015-03-25
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-

Method used

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  • Production technology for orderly dacron bamboo node yarns of identical specification
  • Production technology for orderly dacron bamboo node yarns of identical specification

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0029] Example 1

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

[0031] The slice drying process needs to be heated to 160-170℃. The softening point of ordinary slices is very low, and it is easy to form agglomerates and block the drying device or the feeding pipe. Pre-crystallization improves the crystallinity of the slices, so that the softening point can reach above 200℃, which is beneficial The drying went smoothly. When drying, it is transported from the bottom of the drying tower to the drying tower to contact with the slices in the reverse direction to quickly dehydrate the slices, and the dry air will take the moisture out of 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 volume 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 chips is ≤0.003%. The ...

Example Embodiment

[0057] Example 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 volume 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 micro-holes of the spinneret are arranged in a rhombus or array, and form an angle of 25° with the side blowing wind direction; the spinning temperature is 288°C, the spinneret specification is Φ95, and the spinneret micropores It is 0.28*0.54*36, the component composition is 20 / 280+40 / 240 mesh / g, and the initial spinning pressure is 170 bar.

[0062] 3. Side blowing, cooling and forming, oiling

[0063] In this embodiment, the micro-holes of the spinneret are arranged in a rhombus or array, the side blowing speed is 0.65M / s, the side blowing te...

Example Embodiment

[0068] Example 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 micro-holes of the spinneret are arranged in a rhombus or array, forming an angle of 20° with the side blowing wind direction; the spinning temperature is 286°C, the spinneret specification is Φ95, and the spinneret micropores It is 0.28*0.54*36, the component composition is 20 / 280+40 / 240 mesh / g, and the initial pressure of spinning is 160 bar.

[0073] 3. Side blowing, cooling and forming, oiling

[0074] In this embodiment, the micro-holes of the spinneret are arranged in a rhombus or array distribution, the side blowing speed is 0.55M / s, the ...

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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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IPC IPC(8): D01D5/20D01D5/08D01D5/088D01D5/12
CPCD01D5/20
Inventor 高忠林兰寿梅
Owner ZHONGRUN SCI & TECH
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