JPS628780A - Heat insulating material - 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] Field of use〉 Regarding insulation materials.

<・Prior art> In recent years, as the standard of living has improved, household goods have become more diversified or more sophisticated, and bedding, which is a typical household item that uses heat insulating materials, is no exception. In the case of insulation materials, various materials have been used, such as those using cotton as a heat insulating material, which have been used for a long time, and those using synthetic fiber cotton and high-quality materials using wool. On the other hand, not only have materials become more diverse, but their functions have also improved, not only in terms of heat retention, but also in terms of lightness, texture, and more!
It is becoming increasingly necessary to satisfy performance such as deodorization, antibacterial, and piping prevention, and moreover, it is required that these functions be satisfied in combination. A heat insulating material that satisfies these requirements has not yet been obtained, and its development is strongly desired.

<Purpose and Structure of the Invention> As a result of intensive research aimed at obtaining a heat insulating material that satisfies such social needs, the present invention has developed a heat insulating fiber aggregate having specific anti-swee and/or anti-mildew features. The present invention was completed based on the discovery that the material used for the material retains heat retention and texture while exhibiting excellent overall antibacterial and/or antifungal effects as well as deodorizing effects.

That is, the present invention provides a heat insulating material whose main component is an aggregate of fibrous materials, and a portion of the aggregate that has been treated with an anti-MU and/or antifungal agent and a portion that has not been treated with the anti-MU agent and/or a fungicide. The present invention provides a heat insulating material characterized in that the treated portion and the untreated portion are substantially uniformly mixed.

The present invention will be explained in more detail below.

A feature of the present invention is that the aggregate of fibrous materials constituting the heat insulating material consists of a portion treated with an antibacterial agent and/or antifungal agent and a portion not treated with the antibacterial agent, and these are substantially uniform. It is characterized by a mixture of. To describe this characteristic more specifically, when looking at the fibrous material at the single fiber level, there are parts where one single fiber has been treated with an antibacterial agent and/or antifungal agent, and a part where the treatment has not been performed. If the fibers have both parts and they constitute an aggregate, if the treated single fibers and the untreated single fibers constitute the aggregate, or if both are mixed. An example of this is when an aggregate is formed.

In the present invention, "substantially upwardly mixed" means that the area consisting only of parts not treated with the antibacterial agent and/or antifungal agent is too large for the antibacterial effect and/or antifungal effect to reach. This means that the treated parts are uniformly distributed throughout the aggregate with substantially no free parts. In other words, the portions treated with the antibacterial agent and/or the antifungal agent may be distributed more or less uniformly as long as the antibacterial effect and/or antifungal effect is maintained. As described above, it is important that the heat insulating material of the present invention is composed of an aggregate in which a portion treated with an anti-fungal agent and/or a fungicide and a portion not treated are substantially uniformly mixed. It has been found that this makes it possible to obtain overall antibacterial and/or antifungal effects, as well as deodorizing effects, while preventing deterioration in texture. In order to fully demonstrate this effect, 90% of the entire area must be treated with antibacterial and/or antifungal treatment.
Hereinafter, it is appropriate that K be preferably 80% or less and occupy 20% or more, preferably 30% or more.

The fibrous material and the aggregate thereof in the present invention are:

There are no particular limitations on its material or shape,
Any conventionally known material may be used.Specific examples of the fibrous material include natural fibers such as cotton, wool, 1g of wool, feathers, polyester, nylon, cellulose acetate, polyolefin, acrylic, and polyvinyl chloride! Aramid, rayon, penpelg, boreru. In addition, the shapes of the aggregates include aggregates of short fibers, aggregates of long fibers, and aggregates that combine both, or simply aggregates of fibrous substances at random, and in some cases, they are entwined with each other. Examples include those formed into knitted fabrics, woven fabrics, etc., and nonwoven fabrics.

In addition, the heat insulating material of the present invention includes bedding such as a kakefuton, a shikifuton, a zafuton, a kotatsu futon, a blanket, bedding, pillows, daily necessities such as a zafuton, a cushion, and cold-weather clothing such as anoraks and coats.

Specific examples include flooring materials such as carpets and carpets, and home insulation materials used as surface members for walls and ceilings.

The antibacterial agent (also referred to as an antibacterial agent) in the present invention is not particularly limited as long as it has an antibacterial effect, but it is preferably a substance that has a large antibacterial effect and is safe for the human body during use, and the following: Things are exemplified.

Namely, halogenated phenol compounds, isosialic acid compounds, quaternary ammonium compounds (including silicone quaternary ammonium salt compounds), and other organic-logan compounds are preferred, among which Special K Hegyogenated phenolic compound, No. 4
Grade ammonium compounds and the like are preferred.

Further, the antifungal agent in the present invention may be any substance as long as it has an antifungal effect, but it is preferably one that has a strong effect and is safe for the human body during use. Specific examples of such antifungal agents include benzimidazole compounds and thiocarbamate compounds.

Examples include thiabendazole compounds, specific organic halogen compounds, and among them, 4IK pentimimezoyl compounds, thiocarbamate compounds, and the like are preferred.

In the present invention, such antibacterial agents or antibacterial agents may be used alone or in combination, or a combination of two or more of them may be used.

Such halogenated phenolic compounds include, for example, hexadi+20 phene, 2.4.4'-tric chloride 2.
'-Hydroxydiphenyl ether, biotinol, a/byl and the like. Examples of thiocarbamate compounds include 2-naphthyl-N-methyl-N-
1(1-naphthyl)thiocarbamate, 2-naphthyl-
Examples include N-methyl-N-(3-tolyl)thiocarbamate. Furthermore, examples of benzimidazole compounds include 1-dodecyl-2-methylimitazole,
2-usodecylimidazole, l-dodecyl-2-methyl-3-benzylimidazolium coulide.

Specific examples of the hagnized isocyanuric acid compound include dichloroin cyanuric acid and its sodium 17ium salt. Examples of quaternary ammonium compounds include pesozethonium chloride and penzalphnium chloride.

Examples include silicone compounds having a quaternary ammonium group. A typical example of a VC@specific organic compound is α-p-Mocinnamfulde.

It should be noted that some of these compounds, even if they are antibacterial agents, have some antifungal effect, and conversely, even if they are antifungal agents, they also have some incidental antibacterial activity. can be classified according to their main efficacy and used as antibacterial agents or antifungal agents.

According to the present invention, the type of antibacterial agent and/or antifungal agent and the amount of each can be appropriately selected depending on the degree of need for antibacterial and antifungal performance, and especially if both are used together, the overall effect can be improved. There are advantages such as making it possible to reduce the amount of these drugs used.

The total usage amount of the antibacterial agent and antifungal agent of the present invention is preferably from 0.005 to 5% by weight based on the total weight of the fiber aggregate before treatment, and more preferably from o to 1% by weight. ,%KO
, O1 to 0.5% by weight is preferred.

It is preferable to use more than this in terms of performance if economics permit, but it is necessary to pay attention to safety for humans and animals, the texture of the product, etc. -The effect that can be obtained is less than 10,000 yen.

It is necessary to fully consider the required amount in terms of durability. ・Redundant agent 1 There is no problem in using it in combination with additives such as colorants. and/or a fiber assembly in which anti-mildew-treated portions and untreated portions are substantially evenly mixed.

Although the main component is a body, the present invention is not limited to a specific method for obtaining a heat insulating material having such a complicated structure. A simple method for this treatment is, for example, applying or spraying one or more antibacterial treatment agents and/or antifungal treatment agents to the wool at any step from the raw wool stage to the card saturation step. .

For example, single fibers that are treated and untreated single fibers are treated by continuously introducing an antibacterial treatment agent and/or an antifungal treatment agent from above on a conveyor that conveys raw wool to a dehairing machine in order to adapt to the above-mentioned treatment range. It is divided into two layers.

The raw wool that has been treated in two layers is made uniform to a certain degree by a dehairing machine, and is further conveyed to a card for the next process, where it is further homogenized and becomes a completely mixed wool futon filling.

This wool futon filling is further processed into a thin sliver shape, and several sheets are stacked together to form the final futon filling and are dried and set to form the final futon filling.

Wool that has been treated with antibacterial and/or anti-piping treatments can be processed into various shapes to exhibit its characteristics.

Such treatment can be similarly carried out in the case of cotton or synthetic fiber cotton at any step prior to making curd food.

<Examples> The present invention will be further explained below with reference to Examples, but the present invention is not limited to these Examples in any way.

In the examples, "parts" means "parts by weight."

Examples 1 to 4 As an antibacterial agent, 10 parts of 2.4.4'-Tocro I: + Rho 2'-hydroxydiphenyl ether, 90 parts of polyoxyethylene glycol (average molecular fi of about 600) and a trace amount of surfactant were uniformly mixed. After dissolving it in water, it was dispersed in water and the total volume was increased 1000 times.

# this adjustment liquid! A planar aggregate of fibers (
It was sprayed on one side with a thickness of about 5α and a basis weight r5o1/l), and after drying in a hot air dryer at 60°C for about 2 hours,
Once the waste was removed, the aggregate was substantially homogenized.

Twenty single fiber samples were extracted from this aggregate and their antibacterial properties were evaluated using a halo test.

The bar test uses Staphylococcus aureus (S,
Aureus)', AATCC (Techn.
ical manual of th@ Am@
rlcanJ Association of TsxtiTe Ch
The total length of sample fibers in which a halo was observed was divided by the total length of the sample fibers, and the ratio was expressed as a percentage.

In addition, as a texture evaluation, when the waste fiber aggregate 501 was dug up and removed with bare hands, the size of the texture was visually confirmed and expressed on the following 10 scale. In other words, if it completely returns to its original state, it will be grade 10, if the state it has been completely restored will be grade 1, and if it is divided into nine equal parts, it will be graded 2.
Expressed in grades 9 to 9. The results obtained are shown in Table 1.

Comparative Examples 1 to 5 In Comparative Example 2, a homogeneous solution of anti-stimulant polyoxyethylene glycol and surfactant (each used in the same amounts as in Example 1) was dispersed in water to make a total of 500 parts. In Comparative Examples 1s3 to 1s3 to 5, the same conditioner as in Example 1 was used, and the fibers shown in Table 1 were sprayed, dried, and dried in the same proportions as in Example 1. A waste cotton operation was performed. Using the obtained fiber aggregate, the same test No. 1-1 as in Example 1 was carried out to evaluate the texture and texture, and the results are shown in Table 1.

Comparative Example 6 Spray treatment and drying were performed in the same manner as in Example 1 to obtain a planar wool aggregate. Twenty single fiber samples were extracted from the surface opposite to the spray-treated surface of this planar aggregate and subjected to a halo test in the same manner as in Example 1.

Further, the same texture evaluation as in Example 1 was carried out using a wool aggregate 5°I obtained by scraping this planar aggregate at 5°C. The results obtained are also shown in Table 1.

<Effects of the Invention> The heat insulating material made of the fiber aggregate of the present invention has excellent antibacterial and/or antifungal effects as a whole, and some also have excellent deodorizing effects. Furthermore, the heat insulating material of the present invention is excellent in retaining the texture and bulk of the fiber aggregate and has properties equivalent to those before treatment with an antibacterial agent or the like.

Claims (3)

[Claims] (1) In a heat insulating material whose main component is an aggregate of fibrous materials, the aggregate has a part treated with an antibacterial agent and/or a fungicide and a part not treated with the antibacterial agent. , A heat insulating material characterized in that a portion subjected to the treatment and a portion not subjected to the treatment are substantially uniformly mixed. (2) The heat insulating material according to claim 1, wherein the fibrous material has a portion subjected to the treatment and a portion not subjected to the treatment. (3) The heat insulating material according to claim 1, wherein the aggregate is composed of a fibrous material subjected to the treatment and a fibrous material not subjected to the treatment.