JPH01118668A - Production of deodorizing cloths - Google Patents

Abstract

PURPOSE: To obtain a cloth having sure deodorizing function by spinning and weaving a raw material compounded with an oxide-based powdery deodorizing agent while exposing the raw material to an atmosphere containing active species during the above steps and/or after weaving. CONSTITUTION: A cloth is woven with a yarn produced by spinning a raw material compounded with an oxide-based powdery deodorizing agent composed mainly of a mixture of titanium dioxide and zinc oxide and containing a certain amount of water. The yarn or the cloth is exposed to an atmosphere containing one or plural irradiating or filled active species such as ion, radical, electron, atom, laser light, ionizing radiation, ozone during the period between the spinning process and the weaving process and/or after the weaving process. Sure deodorizing function can be attained since the powdery deodorizing agent is held in the cloth texture in a state supported on the yarn and partly exposed to the outer atmosphere.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to deodorizing fabrics, particularly woven fabrics, knitted fabrics, non-woven fabrics, leather-like sheet materials, etc., which contain a fine powder deodorizing agent and also have a deodorizing function. The present invention relates to a method for producing fabrics with structured fibers.

BACKGROUND TECHNOLOGY As our lives become more affluent, we are becoming increasingly aware of everything from so-called bad odors to body odor and the so-called everyday odors that are so familiar to us.
There is a growing demand to eliminate this.

For this reason, the development of deodorizers has been actively carried out, and substances that are far superior to conventional activated carbon have been created one after another. There is also a movement to include it in tissues.

Possible ways to do this include mixing the deodorizing agent into the spinning raw material and then spinning it, or impregnating it with a deodorizing solution after spinning, cutting, sewing, and other finishing touches have been completed.

Problems to be Solved by the Invention However, when mixed into the spinning raw material, the polymer that is the spinning raw material surrounds the deodorant, so the fine powder deodorizer is coated with it. It will exist. In this case, the contact with the odor component is not direct, and it cannot be said that the deodorizer itself is in a state where it can fully demonstrate its original power.

In addition, impregnating with a solution of a deodorizing agent requires subsequent drying, which tends to increase costs, and the fixation is insufficient, so that the deodorizing agent is expected to separate, which is not an excellent method.

Means for Solving the Problems Therefore, in order to solve the above problems, the method for producing deodorizing fabrics of the present invention includes a step of spinning from a raw material mixed with an oxide-based fine powder deodorizing agent, and a step of spinning the obtained raw material. Exposing the yarn or cloth to an atmosphere in which active species exist during the cloth-making process in which the yarn is organized into cloth, between the spinning process and the cloth-making process, or after the cloth-making process, either or both. It is characterized by having a process.

Action ions, radicals, electrons, atoms, laser light, radiation,
Among them, active species such as ionizing radiation or ozone can melt, evaporate, oxidize, erode. Moreover,
By controlling the power and scanning, it is possible to finely etch the entire surface of the object or create pores.

By exposing yarn containing a fine powder deodorizing agent or cloth woven or knitted from it to an atmosphere in which these active species exist, the fiber surface that has come into contact with the active species becomes moderately rough and the fabric becomes rough. The film on the deodorizer is destroyed before it loses its original function.

This exposes some of the fine powder deodorizer to the atmosphere,
The fine powder deodorizer has more opportunities to come into direct contact with odor components, allowing the fine powder deodorizer to exert its original deodorizing power.

Further, if the deodorizing agent is an oxide-based deodorizing agent, it can maintain stable deodorizing power by itself without changing even when exposed to an atmosphere in which active species are present.

Example Next, an example of the present invention will be described in which a fine powder deodorizing agent mainly composed of titanium dioxide and zinc oxide is mixed into the spinning raw material,
The following explanation assumes that a finished nylon fabric is surface etched by so-called ion processing.

A fine powder deodorizer whose main ingredients are titanium dioxide and zinc oxide is currently being released by Titan Kogyo Co., Ltd. and Nikko Rica Co., Ltd. as a TZ deodorizer. Ammonia, which contains some water component, is used as a guideline for comparative evaluation of deodorizing power.
It is a fine white powder that is particularly good at adsorbing hydrogen sulfide at low temperatures and at low concentrations.It deodorizes by reducing odor molecules to lower molecules through catalytic action, and zinc oxide chemically adsorbs acidic gases. , titanium dioxide is thought to physically adsorb alkaline gases. Also,
This is obtained by mixing an aqueous solution of a water-soluble titanium compound and a water-soluble zinc compound with an alkaline aqueous solution and drying the resulting precipitate. Examples include titanium sulfate and titanium chloride. , titanium nitrate, zinc sulfate, zinc chloride, zinc nitrate, etc., with a molar ratio of titanium compounds and zinc compounds of 7:3.
Aqueous alkali solutions such as sodium hydroxide, potassium hydroxide, barium hydroxide, ammonia, etc. are added to a mixed aqueous solution in the range of pH 7 to 3 at a reaction temperature of 40 to 60°C, and the final pH is 7. Preferably, the mixture is mixed in a range of 9 to 9 and the resulting precipitate is dried at 150 to 220°C.

On the other hand, as a spinning raw material, for example, the above-mentioned TZ deodorizing agent may be mixed into molten nylon after polymerization to form a part of nylon chips, or TZ deodorizing agent may be added to nylon chips melted during melt spinning. The agents may be mixed, and in any case, nylon-6.6, nylon-6,
In addition, any material may be used as long as the TZ deodorizer is mixed into a polymer substance containing an amide group -CONH- in the monomer and its fine powder is dispersed almost uniformly. If the dispersibility is poor, it is possible to have a group that binds to organic materials and a group that binds to inorganic materials in the same molecule, and chemically link the two, or improve the affinity through a chemical reaction. A fine powder deodorizing agent treated with a so-called coupling agent, for example, a silane coupling agent such as vinyl trichlorosilane, a titanium-based coupling agent such as isopropyl triisostearoyl titanate, etc., may be mixed.

After that, the molten nylon is ejected from the nozzle, cooled and solidified to become a thread, but at that time, due to its viscosity, it ejected while containing an appropriate amount of fine powder, which is the TZ deodorizer, so it cooled and solidified. The TZ deodorizer will exist dispersed in the system.

After that, it is rolled up after air cooling, heating, oiling, etc., and is further subjected to post-processing according to the purpose, such as low-temperature stretching, heat setting, twisting, woolening, etc. In addition, due to the nature of knitting, weaving, and twisting, sizing may be performed using starch or polyvinyl alcohol glue. Incidentally, there is no particular difference from the conventional spinning process except that a fine powder deodorizing agent is mixed into the spinning raw material.

Here, even if the spinning raw material is used as a spinning raw material, the fine powder deodorant is mixed into the liquid raw material and spun, so that the fine powder deodorant is coated with the fiber component polymer. In the example, each fine powder of the TZ deodorizer is coated with nylon, albeit an extremely thin layer. Further, when sizing is performed, there may be cases where the coating is further coated in multiple layers.

For this reason, no matter how good the deodorizer is,
The contact between the deodorizer and the odor components is only indirect through the film, so no matter how much this thread is woven or knitted, as long as this film is present, the fabric will not have much deodorizing power. There was no way it could have been finished as something it was.

In the present invention, after this, the fabric is made into a product in the form of thread, or in the form of organized cloth such as weaving or knitting, or in some cases, by cutting, sewing, etc. The deodorizing agent is exposed to an atmosphere containing active species, and its surface is finely etched to expose a portion of the fine powder deodorizing agent to the atmosphere.

This can be done at the yarn stage after spinning, but even after it has been structured into a woven fabric etc., resin processing, coating processing, etc.
Since it is often subjected to post-processing such as polishing, embossing, brushing, and grafting, and then re-coated, it is most efficient to carry out this process after it has been organized and finished into cloth. and reliable.

In addition, the a-cloth process, which involves weaving etc. to form a structure into cloth, is
There is no difference at all from the past, and conventional methods and methods will be used.

For example, if it is obtained as a woven fabric, a high frequency voltage is applied to the electrode in a low pressure gas such as argon gas to cause a glow discharge, and the ta cloth is placed on the cathode and bombarded with cations. We decided to perform ion etching, a type of ion processing, in which the surface components are sputtered and etched.

As a result, the surface of the woven fabric has no visible appearance with the naked eye.
The fiber surface is finely etched without being lffled, and the film that was coated with the TZ deodorizer is broken. On the other hand, since deodorants are originally oxides, they exist stably as they are.

As a result, the TZ deodorizer is exposed to the atmosphere, has many opportunities to come into direct contact with odor components, and is able to exhibit its original deodorizing ability. In this way, the TZ deodorizing agent is supported on the threads, and a cloth as a tissue body that can also have a deodorizing function is completed.

Therefore, if this is processed by cutting, sewing, etc. as appropriate, it can be made into, for example, masks, socks, bags, underwear, sheets, or
It can be finished as a filter for shoes, air purifiers, etc., and can be used as a material for products that require a deodorizing function.

The present invention has been described above as one that performs ion etching using a TZ deodorizer whose main components are titanium dioxide and zinc oxide, but the present invention is not limited to this TZ deodorizer. It goes without saying that other oxide-based deodorizers can be applied in the same way, and the spinning raw material is not limited to the nylon used in the examples, but also nylon molecules, acrylic,
Materials for synthetic fibers such as polyester, recycled fibers such as rayon, and semi-synthetic fibers such as acetate can be used, and various spinning methods such as melt spinning, dry spinning, and wet spinning can be used accordingly. In addition, exposure to an atmosphere containing active species is
In addition to the state of yarn, woven fabrics, knitted fabrics, so-called non-woven fabrics and leather-like sheets, etc., are structured using yarns spun from raw materials mixed with oxide-based fine powder deodorizing agents. If so, it goes without saying that it can be applied in the same way, and in this sense, the fabric-making process in the present invention is not limited to 111wI or knitted strings.
The concept also includes the process of finishing a leather-like sheet product such as non-woven fabric, fake leather, artificial leather, synthetic leather, etc. In this case, in particular, in order to organize it into a leather-like sheet product, a raised 11-knit fabric, a fiber-entangled non-woven fabric, etc. etc.! It is common for the It tissue to contain or be coated with an elastic polymer, so a fine powder deodorizer may also be mixed and dispersed on the elastic polymer side. , so-called stable,
Of course, it does not matter whether the tow or filament is used, and whether the bundle is twisted, false-twisted, or bonded.

In addition, an atmosphere in which active species exist includes ions, radicals, electrons, atoms, laser light, radiation, especially ionizing radiation,
Or, in an atmosphere where active species such as ozone exist as a beam, as a shower, or in a full state, the energy of these active species may be physically, chemically, or mutually affected. This acts secondarily to melt, evaporate, oxidize, erode, and finely etch the fiber components and biting resin.
Any deodorizer that exposes the deodorizer to the atmosphere and does not substantially damage the fabric as a fibrous tissue is sufficient; in this case,
It is advantageous to be able to select the active species and control its energy, etching only the very superficial layer of the surface, or scanning the entire surface to create microscopic holes. In order to process large quantities, ion etching, which is a type of ion processing mentioned above, corona discharge,
Processing techniques such as plasma discharge, electron beam processing, laser processing, etc. that have rapidly advanced in recent years can now be used as special processing in metal and plastic processing. Furthermore, it is possible to easily generate an ozone atmosphere by passing between high-voltage applied electrodes, one of which is a brush-like electrode and the other a flat plate electrode, to generate a discharge, or by applying ionizing radiation such as ultraviolet rays or an ozone atmosphere generated by an ozone generator. The effect can be confirmed by exposing the fabric to oxidation and cracking, for example, by applying the ozone extraction tube from an ozone generator to the fabric and moving it slowly over the fabric to completely penetrate the fabric. For example:
Just let it discharge for an hour or so. These active species may be selected based on their compatibility with the target material, such as cloth.

In addition to the effects of the invention, according to the present invention, the fine powder deodorizer that has been coated remains in the tissue while being supported on the threads without impairing its deodorizing power, and a part of it is exposed to the atmosphere. This increases the chance of direct contact with odor components, making it possible to provide fabrics that can reliably perform deodorizing functions.

Claims (3)

[Claims] (1) A process of spinning a raw material mixed with an oxide-based fine powder deodorizing agent, a cloth-making process of organizing the obtained yarn into cloth, and a process between the spinning process and the cloth-making process, or 1. A method for producing deodorized fabrics, which comprises the step of exposing threads or fabrics to an atmosphere containing active species in either or both of them after the fabric process. (2) The method for producing deodorizing cloths according to claim 1, wherein the deodorizing agent is mainly composed of a mixture of titanium dioxide and zinc oxide and contains some water component. (3) An atmosphere in which active species exist is one or more of ions, radicals, electrons, atoms, laser light, radiation, ionizing radiation, ozone, etc. that exist as irradiated, transmitted, or filled with the atmosphere. The method for producing deodorizing cloths according to claim 1, characterized in that the deodorizing cloths are produced under different atmospheres.