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Sizing agent for fiber

A sizing agent and fiber technology, which is applied in fiber treatment, textiles and papermaking, etc., can solve the problems of unsatisfactory fabric hand feeling and desizing performance, reduce yarn separation and desizing, etc., achieve excellent hand feeling, reduce desizing, The effect of less desizing

Active Publication Date: 2020-08-07
KURARAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, these fiber sizing agents are sizing agents that are satisfactory in terms of weavability, but they still cannot be practically satisfied in terms of reducing desizing during yarn separation, improving the feel and desizing of fabrics

Method used

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  • Sizing agent for fiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0086] Sizing was carried out under the following conditions using the slurries prepared in the formulations described below. Next, weaving was performed under the following conditions using the obtained sized yarn.

[0087] (1) Sizing formula

[0088] PVA [PVA-117: Manufactured by Kuraray Co., Ltd.] 70 parts

[0089] Processed starch [MS-3800: Nippon Food Chemical Co., Ltd.] 30 parts

[0090] Paraffin-based wax [melting point 75°C, JNC204: manufactured by Kanai Sangyo Co., Ltd.] 7 parts

[0091] In the order of PVA→modified starch→paraffin wax, each component was added and mixed three times to obtain a powder compound slurry in which each component was uniformly dispersed.

[0092] (2) Pulping conditions

[0093] Put the above-mentioned mixed slurry into a slurry tank containing water at 20°C, use 4 inclined paddle blades (45 degrees inclination), stir at a speed of 200rpm for 10 minutes, and then add water to reach a concentration of 10% by mass. % prepared in a manner....

Embodiment 2~6

[0115] [Examples 2~6, Comparative Examples 1~4]

[0116] As shown in Table 1, except for changing the type of PVA, the ratio of PVA / starch and the content of wax, etc., in the same manner as in Example 1, a compound size was obtained, the size was prepared, sizing was carried out, and supplied for weaving. For the obtained slurry, the average particle diameters (X) and (Y) of the wax were measured in the same manner as in Example 1. Furthermore, in the same manner as in Example 1, the obtained sized yarn and fabric were evaluated for desizing, weavability, hand feeling of fabric, and desizing property. The results are shown in Table 1.

Embodiment 7

[0118] In the pulping conditions, except that the rotational speed of the four inclined paddle blades was changed to 150 rpm, a slurry was prepared in the same manner as in Example 1, sizing was performed, and it was used for weaving. About the obtained slurry, the average particle diameter (X) and (Y) of wax were measured in the same manner as Example 1, and X / Y was calculated. Furthermore, in the same manner as in Example 1, the obtained sized yarn and fabric were evaluated for desizing, weavability, hand feeling of fabric, and desizing property. The results are shown in Table 1.

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Abstract

A pulp for fiber, which contains polyvinyl alcohol, starch and wax, is characterized in that the viscosity-average degree of polymerization of the polyvinyl alcohol is 200-5000, and the degree of saponification is 70-99.5 mol%, and the polyvinyl alcohol and the starch The mass ratio of the wax is 90 / 10 to 1 / 99, the content of the wax is 0.5 to 20% by mass relative to the total solid content, and the concentration of the solid content contained in the fiber slurry is 10% by mass. The average particle size (X) of the wax in the prepared aqueous dispersion is 0.1-50 μm. Thereby, it is possible to provide a sizing agent for fibers capable of reducing desizing at the time of yarn separation and having excellent weavability, texture of fabric, and desizing property.

Description

technical field [0001] The present invention relates to fiber size containing polyvinyl alcohol, starch and wax. Background technique [0002] Conventionally, polyvinyl alcohol (hereinafter sometimes abbreviated as "PVA"), starches, carboxymethyl cellulose, water-soluble acrylic sizing agents and the like have been used as sizing agents for reinforcing warp yarns of fabrics. Among these, starch is the oldest natural water-soluble polymer used in warp sizing agents. Due to its low price, it is now widely used mainly as warp sizing agents for textile yarns. However, the strength of the resulting size film is weak. , so for a size with a high starch ratio, it is necessary to increase the adhesion to the yarn. [0003] In this regard, PVA is good for long-term storage because it does not spoil as a water-soluble slurry, and the strength of the obtained coating is very strong, so it is gradually used as the main component of the slurry instead of starch. However, if the compoun...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M15/333D06M13/02D06M15/11
CPCD06M13/02D06M15/11D06M15/333
Inventor 大西幸治仲前昌人宫城昭人J.于瓦尼亚马
Owner KURARAY CO LTD
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