A kind of textile size used for sizing pure cotton fabric warp yarn without pva and low sizing rate

A technology of textile size and size, which is applied in the field of textile size, can solve the difficulty of increasing the COD value of desizing wastewater, the difficulty of desizing wastewater treatment and the cost of wastewater treatment, affecting the performance of dyeing and finishing processing and product quality, and increasing the desizing treatment To solve problems such as difficulty and cost, achieve the effects of improving wear resistance and hairiness, easy handling, and low COD content

Active Publication Date: 2020-02-07
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although PVA size has excellent adhesion to cotton, the size film is flexible and wear-resistant, but the desizing performance is poor, and it is not easy to completely remove it during desizing, which will affect the subsequent dyeing and finishing performance and product quality, especially PVA size is difficult It is biodegraded, and the desizing wastewater is difficult to treat, which will cause serious pollution to the environment
The 12%-13% sizing rate can ensure the weaving efficiency of the loom, but on the one hand, it increases the sizing cost and wastes precious resources; on the other hand, the high sizing rate also increases the difficulty and cost of desizing treatment , especially increasing the COD value of desizing wastewater, the difficulty of desizing wastewater treatment and the cost of wastewater treatment

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 kind of textile size used for sizing pure cotton fabric warp yarn without pva and low sizing rate
  • A kind of textile size used for sizing pure cotton fabric warp yarn without pva and low sizing rate
  • A kind of textile size used for sizing pure cotton fabric warp yarn without pva and low sizing rate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Two kinds of slurries were prepared, and the formulas were as shown in Table 1 (wherein the starch in the formula ① was starch acetate, and in the formula ② was cornstarch), according to the formulas ① and ② in Table 1, a 6% concentration slurry was prepared at 95° C. Cook the slurry for 1 hour, cool it to 80°C, cast a size film on the polyester film adjusted to the level, dry it under constant temperature and humidity conditions, and measure its performance. The serous film thickness is tested by a thickness gauge, the elongation is tested by an electronic strength tester, the buckling fatigue resistance is tested by a reciprocating buckling fatigue tester, and the adhesion is tested by a roving method.

[0036] It can be seen that the re-break elongation and cotton adhesion of the size film prepared by the two kinds of formulas of the present invention are significantly improved, especially the buckling fatigue resistance, which is 4-5 times higher than that of the tra...

Embodiment 2

[0040] Fabric type: width 99cm, pure cotton compact spinning 40×40, gray fabric density: 547×283 (root / 10cm), plain weave.

[0041] Firstly, according to the formulas in Table 1 and Table 2 below, the new size ① size and the original size size are prepared respectively; secondly, the size is put into the sizing tank of the sizing machine, and the warp yarn is sized by double dipping and double pressing. Yarn, using amylase and 80 ℃ hot water desizing. The equipment and conditions are shown in Table 2 below.

[0042] Experimental parameters and results involved in table 2 embodiment 2

[0043]

[0044] As can be seen from the above, the original formula has used 25Kg PVA (accounting for 23.8% of the whole size), the sizing rate reaches 12.36%, and the weaving efficiency is 91.4%, and the size is not easy to desizing, and the desizing grade has only 6-7 grades.

[0045] The new formula does not use PVA size at all, the amount of size used is only 38Kg, far less than the 128...

Embodiment 3

[0047] Variety: width 96.5cm, pure cotton warp yarn count 50×50, gray fabric density: 566.5×275.5 (threads / 10cm), plain weave.

[0048] Sizing step is identical with embodiment 2, and concrete condition setting sees the following table 3:

[0049] Experimental parameters and results involved in table 3 embodiment 3

[0050]

[0051]

[0052] The finer the yarn count, the more difficult it is to weave, and the higher the requirements for sizing.

[0053] As can be seen from above, the original formula has used 35Kg PVA (accounting for 35% of the whole size), the sizing rate reaches 12.11%, and the weaving efficiency is 89.4%.

[0054] The new formula does not use PVA size at all, the amount of size used is only 65Kg, and the amount of size used is only about half of the original formula. The sizing rate of the present invention is only 7.12%, the weaving efficiency reaches 91.5%, and the size desizing performance is good. It is easy to retreat, the desizing grade reache...

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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Abstract

The invention discloses a textile sizing agent for PVA-free and low-sizing rate sizing of pure cotton fabric warps, and belongs to the field of textiles. Through combination of microbial polysaccharide xanthan gum, gellan gum and curdlan which are biotechnologically developed and starch, the pure cotton warps are sized. 5-20wt% of starch and 80-95wt% of an auxiliary agent, comprising 30-50wt% of xanthan gum, 20-30wt% of gellan gum, 20-40wt% of curdlan and 3-10wt% of emulsified oil, are proportionally mixed for sizing 40-60-count pure cotton warps, so that PVA-free and low-sizing rate sizing can be achieved, the sizing rate can be reduced from the conventional 12-14% to 6-7%, and the sizing agent resource can be significantly saved; in addition, when the textile sizing agent is used for sizing, few cotton and few sizing agent drop, opening is clear, the weaving efficiency can reach 91% or above, and the desizing grade is up to 9.

Description

technical field [0001] The invention relates to a textile size used for sizing pure cotton fabric warp yarns without PVA and low sizing rate, and belongs to the field of textiles. Background technique [0002] Warp sizing is a key process in textile production, and the sizing effect directly determines weaving efficiency and product quality. In order to ensure the sizing effect and the weaving efficiency of the loom, in the actual sizing production, on the one hand, a certain proportion of PVA size should be used. For 40-60 cotton fabric warp yarns, the general proportion of PVA is 20%. -30%, on the other hand, will guarantee certain sizing rate (the percentage ratio of the warp yarn dry weight of the dry weight of the sizing on warp thread), for the pure cotton fabric warp yarn of 40-60, sizing rate needs to reach 12 %-13%, so that a certain proportion of the slurry penetrates into the warp yarn to bond the fibers inside the yarn. At the same time, a certain amount of slur...

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): D06M15/03D06M15/11D06M101/06
CPCD06M15/03D06M15/11D06M2101/06D06M2200/40
Inventor 范雪荣高卫东王强徐进傅佳佳吴燕
Owner JIANGNAN UNIV
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