JPH0229784B2 - NORIFUKAKOHO - Google Patents

Description

[Detailed description of the invention]

The present invention relates to a processing method for applying a sizing process to textiles that is durable against washing. Sizing of textiles has been a common practice for a long time, but in most cases water-soluble sizing agents are used, so the sizing agent falls off when washed. Therefore, sizing is applied at the consumer level, ie, at home or at a laundry shop, as necessary after each wash. The inventor of the present invention conducted intensive research to improve the washing durability of starch by improving the drawbacks of starching and found that if the sizing agent is made insoluble in water after gluing, the washing durability of starch can be improved. The present invention was achieved by discovering that the following can be obtained. That is, the present invention provides a fiber characterized by applying a water-soluble sizing agent to a textile product and then treating it with low-temperature plasma of a rare gas, oxygen, nitrogen, or a mixture of two or more of these gases at a reduced pressure of 0.1 to 5 Torr. This is a method of gluing products. The present invention will be explained in detail below. In the present invention, a water-soluble sizing agent is first applied to the textile product to be treated. The method of the present invention can be applied to all textile products such as knitted fabrics, woven fabrics, secondary products, and yarns, regardless of whether they are natural fibers or synthetic fibers, long fibers or short fibers. In the present invention, water-soluble sizing agents include starches (wheat starch, rice flour, corn starch, sago starch, potato starch, tapioca starch, etc.), modified starches (dextrin, British gum, apalatin, carboxymethyl starch, etc.), Cellulose derivatives (methylcellulose, ethylcellulose, hydroxyethylcellulose, carboxymethylcellulose, etc.),
Synthetic glues (polyvinyl alcohol, polyacrylic acid, etc.) are used, and these glues can be used alone or in combination. No special method is required to apply the adhesive, and it is best to use a very ordinary and common method. In the present invention, the fibers to which the sizing agent has been applied are
Process with low-temperature plasma of rare gas, oxygen, nitrogen, or a mixture of two or more of these gases at a reduced pressure of ~5 Torr. The low-temperature plasma used in the present invention is a high-frequency plasma (for example, 13.56M
Hz) can be generated by irradiation. Low-temperature plasma has a poor processing effect when the degree of gas depressurization is less than 0.1 Torr, and plasma generation becomes unstable when it is more than 5 Torr.
This must be done within the following range. The gas used for plasma generation must have the ability to cause a crosslinking reaction in the sizing agent, and gases that have this ability include rare gases, oxygen, nitrogen, and these two gases.
Examples include mixtures of more than one species of gas. When treated with low-temperature plasma of such a gas, the size agent adhering to the textile product is crosslinked, and even when the textile product is washed, the size agent does not fall off, and the initial starched texture can be maintained forever. What's more, products after this low-temperature plasma treatment have high hydrophilicity, so dirt can be easily removed and dirt is difficult to re-adhere during washing, that is, SR performance (Soil
It also has release properties and stain resistance). Since the plasma crosslinking properties of glues differ depending on each glue, it is advisable to change the treatment conditions during plasma treatment depending on the glue used. For example, starch is relatively easy to crosslink, but povinyl alcohol is somewhat difficult to crosslink, so when polyvinyl alcohol is used as a sizing agent, it is necessary to make the irradiation conditions stronger than for starch. The method of the present invention focuses on the fact that when a water-soluble sizing agent is irradiated with plasma, network crosslinks are generated between the sizing agent molecules, making the sizing agent insoluble in water, and this is applied as a permanent sizing process for textile products. The present invention has the above-described configuration, and according to the present invention, permanent sizing of textile products can be carried out extremely easily, and its industrial utility value is extremely large. In the following, the method of the present invention will be explained in more detail with reference to Examples. Water absorption is
For SR property, add one drop of B heavy oil, leave it overnight, and wash it using JIS-L-0217 103 method (home washing method). It was judged on a five-point scale from (bad) to grade 5 (good). Example 1 A blend of 65% polyester and 35% cotton after burning, desizing, scouring, bleaching, mercerization, and heat setting.
Poplin using No. 45 was prepared as a fabric to be processed. This was impregnated in a sizing treatment bath of the following formulation 1, squeezed with a mangle to a wet pick-up of 70%, and dried at 120°C for 1 minute. Prescription 1 Corn starch 1% Soluble starch 2% Oil-based softener 1% Silicone-based softener 0.5% Next, using a low-temperature plasma treatment device for fabric, the vacuum level is 2 Torr, the oxygen gas flow rate is 100 ml/min, and the high frequency output is 400 W (frequency 13.56 MHz). The above-mentioned starched fabric was treated for 2 minutes under the following treatment conditions to obtain a treated fabric according to the method of the present invention. The performance is shown in Table 1, and the treated fabric according to the present invention retained its initial texture well even after washing, and was also excellent in water absorption and SR properties.

[Table] Example 2 A 100% cotton 20 count sheeting after burning, desizing, scouring, bleaching, and mercerizing was prepared as a fabric to be processed. This was impregnated in a sizing treatment bath of the following formulation 2, squeezed with a mung mangle to a wet pick-up of 70%, and dried at 120°C for 1 minute. Formulation 2 Corn starch 0.8% Polyvinyl alcohol 1.0% Soluble starch 2.0% Oil-based softener 1.0% Fluorescent dye 0.5% Next, using a low-temperature plasma treatment device for fabric, the vacuum level is 1.5 Torr, nitrogen gas flow rate is 100 ml/min, and high frequency output is applied. The above-mentioned starched fabric was treated for 3 minutes under a treatment condition of 500 W (frequency 13.56 MHz) to obtain a treated fabric according to the method of the present invention. The performance is shown in Table 2, and it can be seen that the treated fabric according to the method of the present invention retains its initial texture well even after washing.

【table】

Claims (1)

[Claims] 1 After applying a water-soluble sizing agent to textiles, 0.1
A sizing method for textiles characterized by treatment with low-temperature plasma of a rare gas, oxygen, nitrogen, or a mixture of two or more of these gases at a reduced pressure of ~5 Torr.