JPS59106569A - Fiber product having different functions at front and back surfaces thereof - 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 fiber product with different functions on both sides (secondly, one side maintains the original hydrophobicity of the fiber, and only the other side changes in external shape and air permeability). The present invention relates to a textile product with different functions on the front and back sides that is hydrophilic (water-absorbent, sweat-absorbent) without having any such properties.

Recently, clothing, especially outwear such as sportswear, is required to have various functions, and many of them are becoming multi-functional and complex. For example, a typical example of this is processing that has different functions on the front and back sides of fabrics used in clothing, making one side water-repellent and the other side hydrophilic (water-absorbent, sweat-absorbent).

The processing method for imparting different functions on the front and back sides of textile products is generally to attach or coat processing chemicals to the fiber surface depending on the purpose, and the quickest method is to use a coating method.

Other methods include a roller touch method and a foam processing method using a foaming medium.

However, methods that use such processing chemicals inherently change physical properties such as the outer shape, structure, and air permeability of the fiber surface; for example, in the coating method, the appearance differs from the uncoated surface. Not only that, but there is also the extremely disadvantageous situation of obstructing the breathability of textiles, etc. In addition, with the roller touch method, there is a problem that the chemicals seep into the back side of the fabric, and furthermore, in any case, the chemicals Depending on the type of fabric, there is a problem that the texture and various fastness properties of the processed fabric may deteriorate.

In view of these technical issues, the present inventors developed a multifunctional composite type textile product in which one side maintains the water repellency inherent to the fiber and the other side is hydrophilic (water absorbent). The present invention was arrived at as a result of extensive research with the aim of developing a textile product with different functional properties on the front and back surfaces (e.g., sweat absorbency).

That is, the present invention provides a gas pressure of 0.0 on one side of a textile product containing at least 50% by weight of synthetic fibers or semi-synthetic fibers.
Low-temperature plasma treatment with an inorganic gas of 1 to 10 torr (2) relates to a textile product with different functions on the front and back surfaces that is imparted with hydrophilic properties, according to which the low-temperature plasma treated surface of the inorganic gas is hydrophilic. (water absorbency, sweat absorption), while the non-treated side retains the original water repellency (non-water absorption) of the fiber, and the low temperature plasma treatment changes the external shape and physical properties such as breathability. It has various advantages such as no change at all, extremely high durability in both functions, and no reduction in fastness to dyeing, etc.

Next, the present invention will be explained in detail.

The textile products to which the present invention is directed include all woven, knitted, or nonwoven fabrics made of polyester fibers, nylon fibers, acrylic fibers, polypropylene fibers, acetate fibers, or blended fibers containing at least 50% by weight of these fibers. be.

In the present invention, one side of such textile products is subjected to low-temperature plasma treatment, and a specific method for carrying out this treatment is as follows:
An internal electrode type low-temperature plasma generator having a counter-discharge electrode with one side grounded is used in a device that can reduce pressure, and the target textile product is set in the device on the ground side's uppermost side C2, and the pressure is reduced. This is carried out by a method in which one side of the textile product is treated with low-temperature plasma generated by applying a discharge voltage of, for example, 400 pol between both electrodes while flowing an inorganic gas underneath to cause glow discharge.

Inorganic gases used here include helium, neon, argon, nitrogen, oxygen, air, nitrous oxide, nitrogen oxide, nitrogen dioxide, carbon oxide, carbon dioxide, bromine cyanide, sulfur dioxide gas, and hydrogen sulfide. These are exemplified, and these may be used alone or in combination of two or more. In the present invention, it is preferable to use oxygen gas or a gas containing at least 10% by volume of oxygen gas as the inorganic gas.

The pressure of the gas atmosphere inside the low temperature plasma generator is 0.
．． The range of 0.01 to 10 Torr is desirable, and under such gas pressure between the counter discharge electrode (three frequencies 10kHz to 100kHz)
Stable glow discharge can be caused by applying power of 10 W to 100 kW at a high frequency such as MHz. Note that as the discharge frequency band, the above-mentioned high frequency, low frequency, microwave, direct current, etc. can be used.

In addition to the internal electrode type described above, the low temperature plasma generator may be an external electrode type depending on the case.
Further, either capacitive coupling such as a coil type or inductive coupling may be used. There is no particular restriction on the shape of the electrodes; the input side electrode and the ground side electrode may have the same shape or different shapes, and they can be in various shapes such as a flat plate, ring shape, rod shape, cylinder shape, etc. may be of the type in which the metal inner wall of the device is grounded as one electrode.

In the sense of imparting efficient treatment effects with short-time low-temperature plasma treatment, an internal electrode type device is preferable, and in this case, the distance between the electrodes is 1 to 30 cm, preferably 2 to 30 cm.
It is preferable to set it to 10 cm. Note that metals such as copper, iron, stainless steel, and aluminum are used for the electrode materials, but for the input side electrodes, resistant materials such as enamel coat, glass coat, and ceramic coat are used to maintain stable discharge. It is preferable to provide an insulating coating with a voltage, and the withstand voltage when applying direct current is 10
00 volts/Wm or more is desirable.

By performing low-temperature plasma treatment using the method described above, one side of the textile product is modified to be hydrophilic (water-absorbing, sweat-absorbing). It imparts hydrophilic properties while remaining the original textile product in appearance, without the disadvantages of coating, such as impairing breathability or deteriorating strength. By adding these functions to the back of the garment, comfort is greatly improved. However, conventionally, a textile product with different functions on both sides has not been provided.

Next, specific examples will be given, but the present invention is not limited thereto.

In the examples listed below, the low-temperature plasma generator shown in the drawings was used.

The processing tank 1 in the figure is made of stainless steel, and is designed to be able to reduce the pressure to 0.01) liters or less using a vacuum pump 2. A gas introduction pipe 8 is attached to the processing tank 1, and various processing gases are divided as necessary and introduced into the tank.

A rotating stainless steel cylindrical cathode 4 is installed in the processing tank 1, and the rotational speed of this cylindrical cathode can be continuously adjusted by a drive device 5C2.

This cylindrical cathode 4 is electrically grounded to the earth through the processing tank 1. Further, this rotary cylindrical cathode 4 has a structure in which the temperature can be adjusted by passing hot or cold water inside. Furthermore, a rod-shaped electrode 6 is provided in the processing tank 1 and is electrically insulated from the tank, and is spaced from the cylindrical cathode 4 at equal intervals. In addition, a Villany vacuum gauge 7 for measuring the pressure inside the processing tank 1 and a high frequency power source 8 for applying high frequency power between the electrodes are provided.

Example 1 100% polyester textured yarn fabric 30cm x 30cm
A test cloth cut into a size of m was pasted on the cylindrical cathode of the above-described low-temperature plasma processing apparatus, and the inside of the processing tank was evacuated to g2. After the internal pressure becomes 0.03), oxygen gas is
The internal pressure was adjusted and maintained at 0.1 Torr since it was introduced and circulated at a rate of 0.1 Torr.

Next, a power of 110 kHz and 2 kW was applied between the electrodes, and low-temperature plasma treatment was performed for 300 seconds. For convenience, we will refer to the side that underwent this plasma treatment as the "back side" and the opposite side as the "front side."We investigated the water repellency and water absorption of both sides, and the results are shown in Table 1. It was as shown.

Water repellency: JIS L 1092 (spray tester method) Water absorption: JIS L 1096A method (dropping method) Table 1 Example 2 30 cm x 30 pieces of 100% Nycon textured yarn fabric
A test cloth cut into cm-sized pieces was subjected to low-temperature plasma treatment in the same manner as in the previous example (this side will be referred to as the back side). When this was tested for water repellency and water absorption in the same manner as in the previous example, the results were almost the same as in Table 1 of the previous example.

[Brief explanation of drawings]

The drawing is a schematic configuration diagram showing an example of an internal electrode type low temperature plasma generation device. 1... Stainless steel processing tank 2... Vacuum pump, 3... Gas introduction pipe 4...
Cylindrical cathode, 5... Drive device 6... Rod-shaped electrode,
7...Pirani vacuum gauge 8...High frequency power supply

Claims (1)

[Claims] 1. Front and back surfaces made by imparting hydrophilicity to one side of a textile product containing at least 50% by weight of synthetic fibers or semi-synthetic fibers by low-temperature plasma treatment with an inorganic gas at a gas pressure of 0.01 to 10 Torr. Different functional fiber product 2, the fiber product contains polyester fiber, nylon fiber, acrylic fiber, polypropylene fiber, acetate fiber, or at least 50% of these fibers.
% by weight, a textile product 3 with different functions on the front and back surfaces according to claim 1, which is a woven, knitted or non-woven fabric made of blended fibers containing % by weight, and a patent in which the inorganic gas contains oxygen gas or at least 10% by volume of oxygen gas. A textile product with different functions on both sides as claimed in claim 1