SU718513A1 - Size composition - Google Patents

Description

one

The invention relates to the field of the textile industry, namely to compositions for sizing cotton yarn before weaving.

Known dressing for cotton yarn composition, wt. %:

Corn starch5,13

Sodium silicate 0.50

Glycerol 0.22

Caustic 0.12

Cottonseed oil0.02

Antistatic OP-20 (ethoxylated alkylphenol) 0.01

Water94.0

This dressing contains foodstuffs - starch and vegetable oil, which leads to an increase in its cost. During the hydrolysis of sodium silicate, polysilicic acids are formed, decomposing into water and silica. The last product of decomposition reduces true glue, violates the uniformity of the sizing film. The consequence of this is an increase in thread breakage. At the same time silicon dioxide is a harmful impurity, it settles on the bottom and breaks the uniform discharge of dressing into the dressing pipe.

The purpose of the invention is to create low cost, improved quality dressing with reduced use of food products.

This is achieved by adding polyvinyl alcohol, sodium carbonate crystalline hydrate and liquid paraffin to the dressing based on corn starch, glycerin, antistatic - ethoxylated alkylphenol and water in the following ratio of initial components, wt. %:

Corn starch1.40-2.00

Polyvinyl alcohol 0,86-1,40

Carbonate Crystal Hydrate

sodium 0,48-0,72

Vaseline oil0,05-0,07

Glycerin 0.14-0.26

Antistatic 0,01--0,02

WaterEverything

Polyvinyl alcohol is included as a viscous material, liquid petrolatum as a softener, sodium carbonate crystalline hydrate contributes to a more complete hydrolysis of starch and the exclusion of the formation of impurities. Combined stitching material (corn starch and polyvinyl alcohol) provides increased glue, increases the viscosity of the dressing, reduces the breakage of the thread and increases its breaking load. In addition, the combination of starch with a synthetic polymer creates the most favorable conditions for optimal moisture content of the thread.

Example. Prepare dressing for three recipes.

The compositions of the proposed dressing are given in table. one.

Table I

The technological process of preparation of the dressing includes the following operations.

After heating 800 liters of water to 30-40 ° C, starch and sodium carbonate hydrate are added with the agitators switched on. Polyvinyl alcohol is dissolved in the resulting mixture. Water is then added to 1750 L and the whole solution is continued to be heated until

90-95 ° С with constantly working bashchalka. Next, glycerol, antistatic agent, liquid paraffin are added.

Comparative tests of the proposed cotton yarn dressing and the prototype dressing are carried out for various yarn articles and are presented in Table 2.

table 2

Indicators

Claims (1)

Claim Dressing for cotton yarn based on corn starch, glycerin, antistatic - ethoxylated alkyl phenol and water, characterized in that, in order to reduce the cost and improve the quality of the dressing, the latter additionally contains polyvinyl alcohol, crystalline sodium carbonate and petroleum jelly NGO "Search" Order 132/19 oil in the following ratio of starting components, weight. %: Corn starch Polyvinyl alcohol Sodium carbonate crystalline hydrate Petrolatum Glycerin Antistatic Water 1.4-2.0 0.86-1.40