JP2561490B2 - Deodorant sheet material - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a breathable sheet material having a deodorizing function, which exhibits excellent deodorizing power particularly when used for a filter material.

2. Description of the Related Art As life has become richer, there is an increasing demand to eliminate odors that are so-called odors and even familiar odors such as cigarette odors.

For this reason, deodorants are being actively developed, and substances far superior to conventional activated carbons are being produced one after another.By simply packing them in a breathable bag etc. and putting them in a refrigerator etc., they can be used. Instead, it has been rapidly increasing in usage by including it in tissue such as paper cloth foam to remove dust as well as dust as a filter material.

Therefore, heretofore, a method in which a deodorant is mixed and contained at the time of raw materials, such as paper materials, spinning raw materials, foaming raw materials,
A method of impregnating a paper, a cloth, a sponge, etc. after the organization is completed, a method of carrying the material by sandwiching it with a breathable covering material such as a thin non-woven fabric or a sponge, and the like have been used.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention However, in the method of mixing at the time of raw material and containing it, the raw material polymer surrounds the deodorant, and the fine powder deodorant can be finished only in a state coated on it. ,Also,
The yarn may be further coated with a coating for subsequent texturing. In this case, it cannot be said that the fine powder deodorant is not in direct contact with the odorous component, and the original power of the deodorant itself is sufficiently exerted.

Also, the impregnation method requires subsequent drying,
The cost is likely to be high, and the deodorant itself is not fixed sufficiently.

Further, in the method of carrying by sandwiching it with a breathable covering material, the degree of ventilation of the covering material on the front and back sides affects the pressure loss as a filter material, and on the other hand, it also affects the particle size of the fine powder deodorant that can be carried. Limited, and for this reason,
It was difficult to finish a sheet material with little pressure loss and deodorizing power.

Therefore, in order to solve the above problems, the deodorant sheet product of the present invention contains an oxide-based fine powder deodorant and is exposed to an atmosphere in which active species are present, so that the surface is The layer of yarn that is finely etched, the film on the fine powder deodorant is destroyed, and a portion of the fine powder deodorant is exposed is carried by sandwiching the sheet-like breathable covering material on the front and back sides. It is characterized by

Action Ions, radicals, electrons, atoms, laser light, radiation, especially ionizing radiation, or active species such as ozone are used to physically and chemically treat an object in an atmosphere such as under irradiation by the energy of the active species. , Or their interaction, melts, evaporates, oxidizes and erodes. In addition, by controlling or scanning the power at that time, it is possible to finely etch the entire surface of the target object or to make fine holes.

By exposing a yarn containing a fine powder deodorant as an object to an atmosphere in which these active species are present, the surface in contact with the active species is moderately roughened, and it does not change to contain the differential deodorant as a yarn. Destruction of the coating on the deodorant takes place.

As a result, a part of the fine powder deodorant is exposed to the atmosphere and has many opportunities for direct contact with odorous components, and the fine powder deodorant itself is also exposed by the treatment in the presence of active species. Stable deodorizing power can be maintained without change, and as a result, the fine powder deodorizing agent can exert its original deodorizing power.

In addition, the yarn in which a part of the fine powder deodorant is exposed in this manner is directly sandwiched as a layer in the sheet-like breathable covering material without being further stacked with the binders, and the yarn is exactly removed. The deodorant is put in a state where its original power is exerted. Since the yarn has a length and is not fine particles like a deodorant, it is possible to select a so-called coarse breathable covering material, and the pressure loss can be adjusted quite freely by the filling condition of this covering material and the inside thread. it can.

Example Next, one example of the present invention was prepared by adding a fine powder deodorant containing titanium dioxide and zinc oxide as main components to a nylon thread, and layering this into a thin sponge made of vinyl chloride from both sides. It is assumed that a sheet material which is sandwiched between sheets and whose periphery and places are joined by enclosing the front and back sides of the sheet is then exposed to an atmosphere in which ozone is present and the surface of the yarn inside is finely etched.

In the drawings, 1 is a layer containing a fine nylon powder deodorant containing titanium dioxide and zinc oxide as main components, and a part of the nylon thread is exposed, and 2 and 3 are made of vinyl chloride. Is a thin sponge sheet, and when the layered yarns are sandwiched and carried, the periphery and places thereof are joined 4 by a high frequency welding machine.

Such a fine powder deodorant 1 containing titanium dioxide and zinc oxide as main components is currently provided as a TZ deodorant by Titanium Industry Co., Ltd. and Nikko Rica Co., Ltd. It is mainly composed of zinc, contains some water components, and is a white fine powder that is particularly excellent in low-temperature, low-concentration adsorption of ammonia and hydrogen sulfide as a standard for comparative evaluation of deodorizing power. Deodorizing by reducing the malodorous molecule by the action,
Furthermore, it is considered that zinc oxide chemically adsorbs an acidic gas and titanium dioxide physically adsorbs an alkaline gas. Further, 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, for example, titanium sulfate, Titanium chloride, titanium nitrate, zinc sulfate,
An aqueous alkali solution such as sodium hydroxide, potassium hydroxide, barium hydroxide, or ammonia is added to a mixed aqueous solution in which a titanium compound and a zinc compound are in a molar ratio of 7: 3 to 3: 7, such as zinc chloride and zinc nitrate. Partially or completely, at 40-60 ° C
At the reaction temperature of, the pH is finally mixed in the range of 7 to 9, and the resulting precipitate is dried at 150 to 220 ° C.

On the other hand, as the spinning raw material, for example, a nylon tip obtained by mixing the TZ deodorant in molten nylon after polymerization may be used, or a TZ deodorant may be added to the molten nylon tip during melt spinning. In any case, Nylon-6,6, Nylon-6, and the like, a TZ deodorant is mixed with a polymer substance containing an amide group -CONH- in the monomer simple substance, Any fine powder can be used as long as it is almost uniformly dispersed. If the dispersibility is poor, a group that binds to an organic material and a group that binds to an inorganic material are provided in the same molecule to chemically combine the two or improve the affinity with a chemical reaction Do
A so-called coupling agent, for example, a fine powder deodorant treated with a silane coupling agent such as vinyltrichlorosilane or the like, or a titanium-based coupling agent such as isopropyltriisostearoyltitanate may be mixed.

The melted nylon, which is the raw material for spinning, is ejected from a die and cooled and solidified to form a yarn.
The TZ deodorant is dispersed in the cooled and solidified yarn because the TZ deodorant, which is a fine powder, is ejected while containing it in an appropriate amount. Then, although it is then subjected to treatments such as air cooling and moisture absorption, in any case, it is produced without any particular difference from the conventional spinning process except that the fine powder deodorant is mixed with the spinning raw material.

Then, this yarn is cut to an appropriate length, further, the fiber bundle is unwound, made into a fluffy cotton shape, and blown to a cylinder to form a web.

By the way, regardless of the 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 polymer as the raw material.
In the example, although a very thin layer is formed around each fine powder of the TZ deodorant, the state is coated with nylon, so that conventionally, even when any excellent deodorant is contained, the deodorant is used. The contact between the agent and the odorous component was only indirect through the coating.

For this reason, in this embodiment, after enclosing the thread by sandwiching it between the front and back sponge sheets 2 and 3, the sheet is exposed to an atmosphere in which ozone, which is an active species, is present to finely etch the surface of the thread. Then, a part of the fine powder deodorant in the yarn is exposed to the atmosphere.

In addition, weaving, weaving, or
When finishing into a non-woven fabric, it may be subjected to sizing processing and adhesion processing with a binder, and this may cause film formation again, so sandwich it between the front and back sheet-like breathable covering materials as it is as it is. To do.

Therefore, for example, an ozone extraction tube from an ozone generator is applied to this sheet material, and it is moved slowly over it to allow air to permeate through it, or this sheet material is used as a filter to allow ozone to pass through, If left in a container communicating with the ozone extraction pipe for a while, for example, for 1 hour, the strong oxidizing action of ozone may cause some discoloration in the coating material depending on the material of the coating material such as urethane. Although there was no visible damage, the surface of the thread through which the Osson penetrated was slightly roughened,
The coating on the TZ deodorant of the yarn is broken. On the other hand, since the deodorant is originally an oxide, it exists stably as it is.

As a result, the TZ deodorant is exposed to the atmosphere, has many opportunities for direct contact with odor components, and can exhibit its original deodorizing power.

Even in this state, since the deodorant is fixed in the yarn, it does not separate as a dust medium, and a breathable sheet material that can also have an excellent deodorizing function. Is completed.

Therefore, by changing various conditions such as the ozone concentration and the time of exposure to the presence thereof, and thereafter, as it is, or by cutting or molding,
It can be used as a filter material for an air conditioner, an air purifier, or a max, a part of a cushion material such as a seat or a headrest, or an insole of shoes.

When used as a filter material, the yarn carrying the fine powder deodorant has a length, is not fine particles like the deodorant, is much larger, is not dense, and intersects three-dimensionally as a layer. Since it exists, its ventilation resistance is low,
Moreover, since a so-called coarse mesh can be selected as the breathable covering material, as a result, the pressure loss as a sheet material can be adjusted quite freely by selecting the breathable covering material and the filling condition of the yarn inside.

That is, according to the present invention, the degree of ventilation of the front and back covering materials can be freely changed, so that it is finished as a sheet material capable of reducing pressure loss, and is particularly useful as a filter material.

Although the present invention has been described above using the TZ deodorant containing titanium dioxide and zinc oxide as the main components, the present invention is not limited to this TZ deodorant, and metal oxides and other oxides can be used. Needless to say, a deodorant of the same type can be applied in the same manner, and the spinning raw material is not limited to the nylon of the examples, and other polymers, synthetic fibers such as acrylic, polyester and polypropylene, and recycled fibers such as rayon. , Semi-synthetic fibers such as acetate.

Further, the exposure to the atmosphere in which the active species are present does not occur even after finishing the sheet material as in the above-mentioned example, even if the web is kept in the state of the yarn, the state of the cotton is opened, and the state of the web is oxidized. It suffices that the yarn spun from the raw material in which the fine powder deodorant of the physical type is mixed is in a filamentous or so-called cotton state without being joined as a texture with a binder or the like. In this sense, the yarn may be so-called staple, tow, or filament, whether it is bundled, twisted or false twisted, but unwound in a cotton shape is particularly desirable.

In addition, exposure to an atmosphere in which active species are present means that active species such as ions, radicals, electrons, atoms, laser light, radiation, and ionizing radiation, among others, are used as a beam, as a shower, or exposed to the ozone presence tool. In an atmosphere that is to be present in a filled state, the energy possessed by these active species acts physically, chemically, or mutually, primarily and secondarily, to form a film. After the polymer is melted, evaporated, oxidatively eroded, finely etched, the deodorant is exposed to the atmosphere, and after being made into a sheet, the breathable coating material on the front and back is essentially large. Anything that does not get damaged will do. In this case, it is advantageous that the active species can be selected and the energy thereof can be controlled so that the surface can be scanned, and in the state of the thread, for example, in a low pressure gas such as argon gas. A high-frequency voltage is applied to the electrodes to cause glow discharge, the woven cloth is placed on the cathode, the surface components are sputtered by bombarding with cations, and etching is performed. Corona discharge in the air, plasma discharge, electron beam processing, laser processing, etc.
It is possible to use the processing technology that has been rapidly advancing in recent years as a special processing in metal and plastic processing.

Furthermore, in the above-mentioned examples, as the sheet-like breathable covering material, a sponge sheet made of vinyl chloride was used, but it is not limited to this, and sponge materials of various materials and nonwoven fabrics of various fibers, woven fabrics, and knitted fabrics are used. A cloth, a porous body made of a metal such as aluminum, or a sintered porous body can be used, and a covering material made of different materials may be used. In addition, when carrying it by sandwiching it, in addition to the fact that the yarn is welded by high frequency welding as in the above embodiment, various means such as ultrasonic welding, heat welding, sewing, welding, and adhesion are used as the material of the covering material. It is possible to select it in relation to the above, and there is no need to make the joining in a sectioned manner, and the point is that the joining is performed so that the inner thread is not easily separated.

EFFECTS OF THE INVENTION As described above, according to the present invention, the fine powder deodorizing agent in the coated state can be used as the sheet-like breathable coating material on the front and back sides while being carried on the yarn without impairing its deodorizing power. Since it is sandwiched, the chance of direct contact with odorous components increases and the deodorizing function can be surely achieved, and the degree of ventilation of the front and back covering materials can be freely changed,
It is finished as a sheet material that can reduce pressure loss, and it is expected to have various applications.

[Brief description of drawings]

The drawings are perspective views showing, as a cross section, a part of an embodiment of the deodorizing sheet material of the present invention. 1 ... Thread, 2, 3 ... Covering material, 4 ... Joining

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code Agency reference number FI Technical display location B01D 53/81

Claims (2)

(57) [Claims] 1. A fine powder deodorant containing an oxide type fine powder deodorant, which is exposed to an atmosphere in which active species are present to finely etch the surface and destroy the coating on the fine powder deodorant. A deodorizing sheet material, in which a layer of thread, a part of which is exposed, is carried by sandwiching a sheet-like breathable covering material on the front and back sides. 2. The deodorant sheet according to claim 1, wherein the deodorant is mainly composed of a composite of titanium dioxide and zinc oxide and contains some water component.