JP2004353133A - Bamboo charcoal yarn, twist yarn produced by using the bamboo charcoal yarn and woven or knit fabric made of the twist yarn - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bamboo charcoal yarn for a twist yarn for the production of a woven or knit fabric having the property of bamboo charcoal, and the twist yarn and woven or knit fabric made of the bamboo charcoal yarn and especially provide a bamboo charcoal yarn produced by using a bamboo charcoal plastic film produced simply by applying bamboo charcoal to the surface of a plastic film. <P>SOLUTION: The bamboo charcoal yarn is produced by the micro-slitting of a bamboo charcoal coated film produced by coating both surfaces of a plastic film substrate with a bamboo charcoal coating layer composed of a bamboo charcoal coating agent obtained by mixing at least a bamboo charcoal obtained by baking bamboo at a high temperature with a binder resin. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a yarn using bamboo charcoal, a twisted yarn using the bamboo charcoal yarn, and a woven or knitted material using the twisted yarn as a raw material, specifically, a bamboo charcoal yarn obtained by microslitting a plastic film coated with bamboo charcoal. And woven and knitted fabrics using the same.
[0002]
[Prior art]
In recent years, with the increasing awareness of hygiene in the general society, clothing and textiles have not only a simple effect of "wearing on" or "using them in daily life", but also have a secondary effect. It has become desired. For example, for underwear and socks, besides the simple conventional purpose of simply protecting the skin, it also has various effects such as deodorizing effect, antibacterial effect, etc. Is becoming desirable.
[0003]
On the other hand, in the general society where IT is progressing, various electromagnetic waves emitted from various electronic devices are starting to become a social problem. For example, electromagnetic waves emitted from a mobile phone may cause a pacemaker to move or stop moving.
[0004]
In the course of various studies on such deodorizing effects, antibacterial effects, or prevention of electromagnetic waves, it has been found that using a vapor-deposited film in which silver is vapor-deposited on a plastic film or the like is effective in preventing electromagnetic waves. On the other hand, other research results have revealed that silver has a deodorant effect and an antibacterial effect, so the use of silver in clothing and textiles not only has a deodorant effect and an antibacterial effect. In addition, clothing and textiles that are useful for preventing electromagnetic waves have become available.
[0005]
A brief description of this silver-containing clothing and textile will be given.
First, silver is vapor-deposited on the surface of a plastic film, for example, a polyester film (hereinafter, referred to as “PET film” or simply “PET”) to prepare a silver-deposited film, and then microslit. Then, the obtained silver-deposited slit yarn is twisted with another fiber, for example, a polyester fiber to make one twisted yarn, and woven with this as a raw material or with this twisted yarn and other cotton or silk yarns, for example. We make clothes such as underwear and fabrics such as tablecloths.
[0006]
The woven fabric obtained in this way contains silver, so that the woven fabric has the deodorizing and antibacterial effects of silver. Tablecloths and so on.
[0007]
However, since silver itself is not an inexpensive substance, the price of a product using silver as described above is not inexpensive but is a problem. Also, when silver deposition was performed, cracks in the silver deposition layer often became a problem. Therefore, as a result of various studies on substances that replace silver, it was found that using bamboo charcoal instead of silver can achieve the same effect as using silver alone, and that using bamboo charcoal and silver together can use silver alone. Shielding materials using bamboo charcoal and silver have been developed in view of the fact that the amount of silver used is smaller than in the case where it is used, and that production costs can be reduced (for example, see Patent Document 1). This is an invention in which a composition containing powdered charcoal, metal powder, and a binder is applied to cloth or paper, and pressed by a certain pressure to obtain an electromagnetic wave shielding material. The effect that a desired shape can be obtained by cutting or bending by applying to paper is obtained.
[0008]
[Patent Document 1] Japanese Patent Application Laid-Open No. 2002-26573
[Problems to be solved by the invention]
However, in the case of the invention described in Patent Document 1, as a pretreatment for applying bamboo charcoal to a base material, a metal powder and a binder must be prepared in addition to bamboo charcoal, and these must be further mixed and obtained. After applying the composition, it must be pressed with a constant pressure by a roller, so that not only an extra step is required, but also it is difficult to develop this on clothes and fabrics as described above. is there. That is, compared with the case where only simple application is sufficient, equipment for mixing and a pressing device using a roller are further required, that is, equipment for manufacturing the shielding material according to Patent Document 1 becomes complicated. It is not preferable. Further, when the slitting material obtained by the patent document 1 is micro-slit, the composition applied to the substrate is easily peeled off, that is, there is no layer exhibiting an effect such as deodorization or antibacterial. Cannot be used as it is, and is still not preferable.
[0010]
The present invention has been made in view of such a problem, and an object thereof is to provide a bamboo charcoal yarn used as a twist yarn for producing a woven or knitted fabric having the properties of bamboo charcoal, and a twist yarn using the bamboo charcoal yarn, It is an object of the present invention to provide a bamboo charcoal yarn obtained by using a bamboo charcoal plastic film obtained by simply applying bamboo charcoal on the surface thereof.
[0011]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, the invention according to claim 1 of the present invention is to mix at least one side or both sides of a plastic film base material, a bamboo charcoal obtained by baking a bamboo material at a high temperature, and a binder resin. It is obtained by microslitting a bamboo charcoal coating film obtained by laminating a bamboo charcoal coating layer formed by the obtained bamboo charcoal coating agent.
[0012]
The invention according to claim 2 of the present invention is formed on at least one surface of a plastic film substrate with a bamboo charcoal coating agent obtained by mixing a bamboo charcoal obtained by baking a bamboo material at a high temperature and a binder resin. A bamboo charcoal coating layer is laminated, and on the surface opposite to the surface on which the bamboo charcoal coating layer is laminated, at least a metal deposition layer formed by vapor deposition of a metal or a metal oxide, and the bamboo charcoal coating layer, The bamboo charcoal coating film, which is sequentially laminated, is obtained by microslitting.
[0013]
The invention according to claim 3 of the present invention relates to the bamboo charcoal yarn according to claim 2, wherein the anchor coat layer provided between the plastic film substrate and the metal vapor-deposited layer, the metal vapor-deposited layer and the bamboo charcoal-coated material. A top coat layer provided between the two layers, and one or both of the top coat layers.
[0014]
The invention according to claim 4 of the present invention is the bamboo charcoal yarn according to any one of claims 2 to 3, wherein the metal deposition layer is formed of silver, aluminum, titanium, nickel, titanium oxide, or aluminum oxide. It is characterized by being formed of any one or a plurality.
[0015]
The invention according to claim 5 of the present invention is the bamboo charcoal yarn according to any one of claims 1 to 4, wherein the binder resin is a polyester resin, an acrylic resin, a urethane resin, an epoxy resin, or a melamine resin. , A polyamide resin, or a polyvinyl alcohol resin.
[0016]
The invention according to claim 6 of the present invention is obtained by twisting the bamboo charcoal yarn according to any one of claims 1 to 5 and one or both of a natural fiber and a chemical fiber, It is characterized by.
[0017]
The invention according to claim 7 of the present invention is characterized in that a twisted yarn using the bamboo charcoal yarn according to claim 6 is used as a raw material.
[0018]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described. Note that the embodiment shown here is merely an example, and the present invention is not necessarily limited to this embodiment.
[0019]
(Embodiment 1)
A bamboo charcoal yarn according to the present invention will be described as a first embodiment.
This bamboo charcoal yarn is formed by laminating a bamboo charcoal coating layer formed by a bamboo charcoal coating agent obtained by mixing at least bamboo charcoal obtained by baking a bamboo material at a high temperature and a binder resin on both surfaces of a plastic film base material. The bamboo charcoal coating film is micro-slit. In the present embodiment, the bamboo charcoal coating layer is assumed to be laminated on both sides of the plastic film, but for example, it is conceivable that the bamboo charcoal coating layer is laminated on only one side, but here it is assumed that the coating is performed on both sides. I do.
[0020]
Hereinafter, each member will be briefly described.
As the plastic film substrate, various known films may be used. However, from the viewpoint of the degree of spread, ease of use, and cost, it is preferable to use a PET film. In the embodiment, a PET film is used. The thickness of the plastic film may be appropriately selected as appropriate. However, in consideration of manufacturing the bamboo charcoal yarn according to the present embodiment, a plastic film having a thickness of 6.0 μm to 25.0 μm should be used. Is preferred. If the thickness is less than 6.0 μm, it will be difficult to perform coating workability and micro-slit as described below, and if it exceeds 25.0 μm, the texture of bamboo charcoal yarn will be poor. In the present embodiment, a substrate having a thickness of 12.0 μm is used.
[0021]
As described above, bamboo charcoal is obtained by baking bamboo at a high temperature, but the variety of bamboo used is not specified, and various bamboos may be used. The reason for using bamboo charcoal will be described later. In the present embodiment, Moso bamboo is used.
[0022]
To explain the bamboo charcoal itself, it is better to use bamboo charcoal baked at as high a temperature as possible, and if the particle size distribution of the crushed bamboo charcoal is as uniform as possible, the effect obtained by bamboo charcoal described later, that is, the electromagnetic wave shielding effect and deodorization Such a bamboo charcoal can be excellent in various functions such as effects, and the appearance when coated as a bamboo charcoal coating agent becomes better as described later. Further, the shape and size of the ground bamboo charcoal are not particularly limited, but in the present embodiment, the average particle size is 10.0 μm, and the particle size distribution is 8.0 μm to 12.0 μm and 90%. The above was used.
[0023]
The binder resin to be mixed with the bamboo charcoal is not particularly limited in the present embodiment, and may be oily or water-based, but more effectively deodorizes bamboo charcoal. In order to make it easy, it is preferably aqueous. In the present embodiment, the binder resin is, for example, a polyester resin, an acrylic resin, a urethane resin, an epoxy resin, a melamine resin, a polyamide resin, or a polyvinyl alcohol resin. If they are present, they can be suitably mixed, so that these are preferably used.
[0024]
This is because when bamboo charcoal is applied alone to a PET film to form a bamboo charcoal layer, the bamboo charcoal is hardly fixed on the PET film, that is, the bamboo charcoal layer is easily peeled off, and the effect of using bamboo charcoal is obtained. Although it is difficult, by mixing the binder resin and bamboo charcoal, the bamboo charcoal is easily fixed on the PET film, and even if bamboo charcoal yarn is manufactured by micro-slitting the bamboo charcoal, the bamboo charcoal peels off or falls off One of the reasons is that there will be no more. In this embodiment mode, an acrylic resin is used.
[0025]
Next, the bamboo charcoal coating agent will be described.
The method of mixing the bamboo charcoal and the binder resin is not particularly limited, but may be, for example, stirring with a ball mill or a disper machine. The mixing ratio of bamboo charcoal and the binder resin is preferably such that the amount of bamboo charcoal added (% by weight) is 5.0% to 60.0% based on the weight of the binder resin. When the mixing ratio is out of this range, the effect of using bamboo charcoal is reduced because the amount of bamboo charcoal is reduced, or the amount of binder resin is reduced, and the fixation rate of the bamboo charcoal coating layer is deteriorated, that is, easily. The bamboo charcoal coating layer is likely to peel off, making it difficult to obtain the effect of bamboo charcoal. Therefore, it is preferable that the mixing ratio be as described above.
[0026]
The thus-obtained bamboo charcoal coating agent is applied to a plastic film, and the method may be a known one, for example, gravure coating, reverse coating, kiss coating and the like. In the present embodiment, a bamboo charcoal coating agent is applied to a PET film by gravure coating. As described above, the bamboo charcoal coating agent may be applied to both sides of the plastic film, or may be applied to one side, but here, it is assumed that the bamboo charcoal coating agent is applied to both sides of the PET film.
[0027]
Further, the thickness of the bamboo charcoal coating layer formed by the bamboo charcoal coating agent is preferably 1.0 μm to 10.0 μm. If it is less than 1.0 μm, the effect of bamboo charcoal cannot be exerted, and if it exceeds 10.0 μm, the texture of bamboo charcoal yarn is poor and yarn breakage occurs when it is woven or knitted. .
Thus, the bamboo charcoal coating film in the present embodiment is obtained.
[0028]
Next, a bamboo charcoal yarn is produced using the obtained bamboo charcoal coating film, which may be microslit by a known method. For example, 80 cuts, 120 cuts, 150 cuts, and 200 cuts can be set. By the way, "80 cut" means that the bamboo charcoal coating film is divided into 80 with respect to one width. The shape of the bamboo charcoal yarn thus obtained is a flat yarn, but this does not necessarily mean that the bamboo charcoal yarn must be formed to have this shape.
Thus, the bamboo charcoal yarn according to the present embodiment is obtained.
[0029]
Since the obtained bamboo charcoal yarn has a configuration using bamboo charcoal, it has the properties possessed by bamboo charcoal, such as adsorbing harmful substances such as formalin and ammonia, or smelling from these or perspiration generated from the human body. Fabrics and clothing having the effect of eliminating blemishes can be manufactured. Furthermore, the effect of bamboo charcoal, for example, the heat retention effect by emitting far infrared rays, the healing effect by generating negative ions, the moisture retention effect by absorbing and releasing moisture, the electromagnetic wave shielding effect by blocking electromagnetic waves, and by keeping germs away The bamboo charcoal yarn according to the present embodiment has antibacterial properties and the like.
[0030]
Next, a twisted yarn is manufactured using the obtained bamboo charcoal yarn, which is obtained by twisting a bamboo charcoal yarn and a normal yarn by a known method. The ordinary yarn may be, for example, all natural fibers such as silk, cotton, and wool, and may be all chemical fibers such as rayon, cupra, ester, nylon, gold, and silver. In the present embodiment, bamboo charcoal yarn and ester yarn are cross-twisted.
[0031]
Furthermore, the obtained twisted yarn using the bamboo charcoal yarn can be used for woven or knitted fabrics, for example, clothing such as underwear and woven fabrics such as tablecloths. By using the bamboo charcoal yarn, the twisted yarn or woven / knitted material thus obtained can be a twisted yarn, woven / knitted material having the same effect.
[0032]
(Embodiment 2)
Next, in the bamboo charcoal yarn described in the first embodiment, a bamboo charcoal yarn further containing a metal will be described as a second embodiment.
The bamboo charcoal yarn according to the second embodiment is formed on at least one surface of a plastic film base material by a bamboo charcoal coating agent obtained by mixing at least a bamboo charcoal obtained by baking a bamboo material at a high temperature and a binder resin. A bamboo charcoal coating layer, and a metal vapor-deposited layer formed by vapor-depositing a metal or a metal oxide on the surface opposite to the surface on which the bamboo charcoal coating layer is laminated; and the bamboo charcoal coating layer. The bamboo charcoal coating film laminated in this order is micro-slit.
[0033]
In the above configuration, the same components as those in the first embodiment will not be described, and different members will be briefly described.
In this embodiment, a metal deposition layer is newly provided as compared with the bamboo charcoal yarn according to the first embodiment. That is, a micro-slit bamboo charcoal coating film having at least the structure of bamboo charcoal coating layer / plastic film substrate / metal deposition layer / bamboo charcoal coating layer is used in the present embodiment. In this embodiment, the metal deposition layer is deposited on only one side of the plastic film substrate, and the following description will be made in this case, but the metal deposition layer may be deposited on both sides.
[0034]
First, the metal vapor deposition layer will be described. This is obtained by vapor deposition on the surface of a plastic film substrate by a known method using a metal or metal oxide as a target. The method of vapor deposition may be a method such as sputtering, vacuum vapor deposition, or ion plating. The thickness of the obtained metal deposition layer is preferably from 200 to 1200 °. If it is less than 200 °, sufficient electromagnetic wave shielding properties cannot be obtained, and if it exceeds 1200 °, thermal damage is increased during metal deposition, so that thermal wrinkles are likely to occur and the economic efficiency is poor. It is assumed that the metal deposition layer in the present embodiment is a silver deposition layer having a thickness of 600 °.
[0035]
As the metal or metal oxide used as the target, any one or more of silver, aluminum, titanium, nickel, titanium oxide, and aluminum oxide is preferable, and silver is used in this embodiment mode. However, other substances may be used. Silver is used because the silver itself has an electromagnetic wave shielding property and an antibacterial property, thereby further improving the electromagnetic wave shielding property and the antibacterial property as compared with the case of using the bamboo charcoal yarn according to the first embodiment. This is because it becomes possible.
[0036]
When there is a problem in the adhesion between the plastic film substrate and the metal deposition layer, an anchor coat layer may be provided between the plastic film substrate and the metal deposition layer. For example, an anchor coat layer made of, for example, an acrylic resin or an epoxy melamine resin is provided on the surface of a plastic film substrate, and a metal vapor deposition layer is further provided on the surface of the anchor coat layer. Further, when there is a problem in adhesion between the metal vapor deposition layer and the bamboo charcoal coating layer provided on the surface thereof, a top coat layer may be provided between the metal vapor deposition layer and the bamboo charcoal coating layer. For example, a top coat layer made of a urethane resin or a melamine resin is provided on the surface of the metal deposition layer, and a bamboo charcoal coating layer is further provided on the surface of the top coat layer. Note that the anchor coat layer and the top coat layer are provided by a known method such as gravure coating, kiss coating, and the like. In the present embodiment, the gravure coating is used.
[0037]
As described above, the bamboo charcoal yarn according to the present embodiment uses silver in addition to bamboo charcoal, so that among the characteristics described in the first embodiment, those having particularly excellent electromagnetic wave shielding properties and antibacterial properties. can get.
[0038]
In the same manner as in the first embodiment, by manufacturing a twisted yarn and a woven / knitted fabric using the bamboo charcoal yarn according to the present embodiment, a twisted yarn / woven / knitted fabric having particularly excellent electromagnetic wave shielding properties and antibacterial properties can be obtained. is there.
[0039]
【The invention's effect】
As described above, according to the bamboo charcoal yarn according to the present invention, adsorption of harmful substances, deodorizing effect, heat retaining effect, healing effect, moisturizing effect, electromagnetic wave shielding property, antibacterial property, by using bamboo charcoal excellent in, Bamboo charcoal yarns, twisted yarns and woven / knitted fabrics having these properties can be obtained. In addition, since it can be obtained without using a particularly complicated manufacturing apparatus or manufacturing method, it can be very suitable in terms of production efficiency, cost, and the like. By using a metal or metal oxide together with bamboo charcoal, bamboo charcoal yarn, twisted yarn, and woven / knitted fabric having particularly excellent electromagnetic wave shielding properties and antibacterial properties can be obtained simply.

Claims (7)

On one or both sides of plastic film substrate,
At least, a bamboo charcoal coating film obtained by laminating a bamboo charcoal coating layer formed by a bamboo charcoal coating agent obtained by mixing bamboo charcoal obtained by baking bamboo material at a high temperature and a binder resin,
Can be obtained by micro slitting,
Characterized by bamboo charcoal yarn. On one side of the plastic film base,
At least, bamboo charcoal obtained by baking bamboo material at high temperature, and a binder resin, a bamboo charcoal coating layer formed by mixing bamboo charcoal coating agent obtained by mixing,
On the surface opposite to the surface on which the bamboo charcoal coating layer is laminated, at least,
A metal deposited layer formed by depositing a metal or metal oxide,
The bamboo charcoal coating layer,
A bamboo charcoal coating film laminated in this order,
Can be obtained by micro slitting,
Characterized by bamboo charcoal yarn. The bamboo charcoal yarn according to claim 2,
Anchor coat layer provided between the plastic film substrate and the metal deposition layer,
A top coat layer provided between the metal deposition layer and the bamboo charcoal coating layer,
One or both layers are provided,
Characterized by bamboo charcoal yarn. In the bamboo charcoal yarn according to any one of claims 2 to 3,
The metal deposited layer is formed of any one or a plurality of silver, aluminum, titanium, nickel, titanium oxide, aluminum oxide,
Characterized by bamboo charcoal yarn. The bamboo charcoal yarn according to any one of claims 1 to 4,
The binder resin,
Polyester resin, acrylic resin, urethane resin, epoxy resin, melamine resin, polyamide resin, polyvinyl alcohol resin, which is one or more,
Characterized by bamboo charcoal yarn. A bamboo charcoal yarn according to any one of claims 1 to 5, and
Either natural fibers or synthetic fibers or both,
And twisting,
A twisted yarn using bamboo charcoal yarn. A twisted yarn using the bamboo charcoal yarn according to claim 6, as a raw material,
A woven or knitted fabric.