JPS6065183A - Adhesion of water repellent or water and oil repellent cloth and adhesive core cloth - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a method for adhering a fabric to an adhesive interlining without impairing the water repellency or water-repellency and oil-repellency of the surface of the fabric when sewing using TA water or water- and oil-repellent fabric. It is related to.

The use of adhesive interlining in sewing clothing has recently become increasingly important as it streamlines the sewing process.

However, fabrics treated with RA water or water- and oil-repellent have poor adhesion to adhesive interlining, so there is a problem that they cannot be applied to sewing methods using adhesive interlining.

Water-repellent fabrics and water- and oil-repellent fabrics have low surface energy because they are treated with silicone-based processing agents such as alkyl polysiloxanes and fluorine-based processing agents such as perfluoroalkyl acrylic esters.

The adhesive strength is poor with any adhesive, and therefore, no matter what type of adhesive interlining is used, the adhesive strength is insufficient and the practicality is poor. The present invention was made in view of the above-mentioned circumstances, and provides a water-repellent or water-repellent and oil-repellent fabric and an adhesive interlining so that the adhesive interlining can be used when sewing water-repellent fabric or water-repellent and oil-repellent fabric. The purpose of this invention is to obtain an adhesion method that improves the adhesion force with.

The present invention that achieves this object has the following configuration.

That is, the present invention is characterized in that before bonding a TA water or water- and oil-repellent fabric and an adhesive interlining, only the adhesive surface of the fabric is subjected to low-temperature plasma treatment in advance, and then the fabric is bonded to the adhesive interlining. This is a method of adhering a water-repellent or water-repellent or oil-repellent fabric to an adhesive interlining. According to the method of the present invention, a fabric and an adhesive interlining can be bonded without impairing the water repellency or water/oil repellency of the surface of the fabric.

The present invention will be explained in detail below.

Water-repellent or water-repellent and oil-repellent fabric is a raincoat.

In order to be used for sportswear, diaper covers, etc., a water repellent or water/oil repellent finishing agent is applied to the fabric by a conventional pad dry-cure method or coating method.

Wax-based and zirconium-based water repellent agents are used.

There are various types such as palladium-based and silicon-based processing agents, but silicon-based processing agents such as methylhydrodiene polysiloxane and dimethylpolysiloxane are mainly used because of their excellent performance.

As the water- and oil-repellent finishing agent, a fluorine-based finishing agent based on polyacrylic acid perfluoroalkyl ester is used. Fabrics treated with such water-repellent or water-repellent and oil-repellent finishing agents naturally exhibit water-repellency or water- and oil-repellency2, because their surface energy is low and the surface wettability of the adhesive is also poor. It is difficult for the adhesive to develop adhesive strength. In particular, heat-sensitive adhesives are used for adhesive interlining, and because the bonding method involves a relatively short heat press process, the melt flow of the adhesive is often insufficient, and therefore water-repellent or water-repellent or oil-repellent treatment is required. Adhesion to fabric becomes difficult. Adhesive interlining is made by applying adhesives such as polyethylene, polyester, polyamide, ethylene-vinyl acetate copolymer resin, etc. to woven or nonwoven fabrics made of various fiber materials by spraying and heat setting, and is widely used. It is used for sewing.

In addition, the low-temperature plasma referred to in the present invention refers to plasma under low pressure.

NQ + 02 + CO + Non-equilibrium plasma in which gas particles generated by glow discharge in a gas such as air are ionized and excited and activated.

Treating a polymeric material with a low-temperature plastic material has the effect of modifying the surface of the material, and can improve adhesion, water absorption, etc.

To generate low-temperature plasma, a vacuum container containing a sample is evacuated and depressurized using a vacuum pump, and a predetermined gas is introduced.
．． 1-2. A method is used in which the degree of vacuum is adjusted to a certain degree within the range of OTorr, and then electrical energy is applied to cause glow discharge. The electrical energy source at this time may be either DC voltage application or AC voltage application;
Usually, a high frequency of IK11z~3000MHz is used, and a high frequency of 13.56MHz is used at a rate of 0.1~IW/at.
A typical method is to apply with the output of (.

When a water-repellent or water- and oil-repellent treated fabric is treated with the low-temperature plasma generated by the method described above, the adhesion of the fabric improves, but at the same time, the originally required properties of water-repellency and water- and oil-repellency are impaired. It gets lost. Therefore, in one method of the present invention, this low-temperature plasma treatment is performed only on one side of the water-repellent or water- and oil-repellent treated fabric, that is, the side to be bonded to the adhesive interlining. This is the most important point and the basis of the method of the present invention. As a method for subjecting one side of the water-repellent or water- and oil-repellent treated cloth, that is, only the side to be bonded to the adhesive interlining, to low-temperature plasma treatment, the following method can be employed.

(1) Gluing the processed fabric to be treated with its adhesive interlining 5
- Two sheets are placed one on top of the other with the sides facing outward and passed through a low temperature plasma atmosphere or left in it for a certain period of time.

(2) The processed fabric to be treated and the impermeable film (e.g. polyester film, nylon film, etc.) are stacked so that the surface to be bonded to the adhesive interlining faces outward, and subjected to low-temperature plasma treatment in the same manner as in (1) above. do.

(3) Among the electrodes that apply high frequency in the low-temperature plasma processing equipment, the earth side electrode is cylindrical.

The workpiece cloth to be treated is brought into close contact with this electrode and transferred while generating low temperature plasma to be treated.

When the fabric is subjected to low-temperature plasma treatment using the method described above,
The surface of the water-repellent or water- and oil-repellent fabric exposed to the low-temperature plasma atmosphere is effectively treated with the low-temperature plasma, and its adhesion to the adhesive interlining is greatly improved. On the other hand, the surface that is not exposed to the low temperature plasma atmosphere.

That is, the inner surface of the overlapping work cloths of (1) above, the surface in contact with the film of (2) above, or the surface of (2) above that is in contact with the film.
Since the surface in contact with the cylindrical electrode of 3) is not treated with low temperature plasma, the original water-repellent or water- and oil-repellent properties of 3 are preserved as they are. In this way, only one side of the water-repellent or water- and oil-repellent treated cloth can be subjected to low-temperature plasma treatment.

Next, in the method of the present invention, this water-repellent or water-repellent and oil-repellent cloth, which has been subjected to low-temperature plasma treatment on only one side, is bonded to an adhesive interlining.
In this case, the treatment may be carried out in a conventional manner at an appropriate temperature and pressure depending on the adhesive used in the adhesive interlining used for the first time.

The present invention has the above-mentioned configuration. 1. According to the method of the present invention, the low-temperature plasma-treated surface of the water-repellent or water-repellent and oil-repellent cloth can be firmly bonded to the adhesive interlining by a conventional method. Moreover, on the other hand, the water repellency and water/oil repellency are not impaired in any way, making it possible to greatly streamline the sewing process while maintaining extremely excellent performance.

Next, the method of the present invention will be explained in more detail with reference to Examples.

Example 1 The following three types of water-repellent fabrics treated with a silicone water-repellent finishing agent: A plain woven fabric using 100% cotton 40 count single yarn, B polyester/65% cotton/35% blend 45 count Plain woven fabric using single yarn, C polyester long fiber processed yarn 150d
Prepare a twill fabric using , divide each into 3 parts +,
With the symbols n and m, T and IT were each subjected to low-temperature plasma treatment under the following conditions, and ■ was used for comparison without undergoing low-temperature plasma treatment.

(2) Using a low-temperature plasma processing apparatus equipped with balanced plate type electrodes in a vacuum container, two pieces of fabric to be treated are brought into close contact with each other and run in the center between the electrodes.

The low temperature plasma generation conditions at this time are 5 high frequency frequencies 13.
56MHz, output 0.5 watt/electrode unit area cJ,
The treatment gas air was set to a vacuum of 3 Torr, and the two stacked fabrics were allowed to pass through the low-temperature plasma atmosphere for 1 minute.

(2) Using the same processing equipment as in I above, the low-temperature plasma generation conditions were also exactly the same, and only the fabric to be processed was processed in one piece as in normal processing.

Next, each sample and the adhesive interlining were bonded together using a true head press at 16° for 10 seconds. Of course, for sample I, the low temperature plasma treated surface and adhesive interlining were bonded together. The following three types of adhesive interlining were used: The base fabric for all of these is 100% polyester 30 count plain weave.

Samples using modified polyester resin (2), ethylene vinyl acetate (vinyl acetate) resin, and polyamide resin (3) Bonded samples are water-repellent using the JTS L 1089 method, and the adhesive strength between the fabric and the adhesive interlining is removed and strong. The water repellency of the surface of the TA water-treated cloth was measured by the JIS L-1096 spray method. The results of these measurements are shown in Table 1.

9- "-Water-repellent 1-worked fabric - A To B To - C As is clear from Table 1, in the case of any of the water-repellent fabrics A, B, and C, only the adhesive surface is treated as in the method of the present invention. The one treated with low-temperature plasma (I) has good adhesion with the adhesive interlining and the water repellency on the surface, and the one treated with 10-cent plasma (II) has improved adhesion with the adhesive interlining but has poor water repellency. Water and oil repellency decreased, and the original performance of the processed fabric was impaired.Furthermore, those without low-temperature plasma treatment had almost no adhesive strength with the adhesive interlining, making them unsuitable for practical use.

Patent applicant: Nitariki Co., Ltd. 13-

Claims (1)

[Claims] (11m Water repellent, characterized in that when adhering a water- or water- and oil-repellent fabric to an adhesive interlining, only the adhesion surface of the fabric is treated with low-temperature plasma in advance, and then the fabric is adhered to the adhesive interlining. Or a method of adhering a water- and oil-repellent fabric to an adhesive interlining.