JP5254757B2 - Cloth - Google Patents

Description

  The present invention relates to a fabric excellent in deodorizing property, antistatic property and antifouling property.

  Conventionally, various attempts have been made to impart properties such as deodorizing properties, antistatic properties, and antifouling properties to fabrics.

For example, Patent Document 1 discloses a fiber structure in which deodorant fine particles are provided via a hydrophilic cross-linked silicone resin, and can exhibit a deodorant excellent in washing durability with a soft texture. Have been described. Patent Document 2 discloses a fiber structure comprising vinyl sulfonic acid and a quaternary ammonium salt on its surface, and exhibits effects such as hygroscopicity, deodorant properties, antibacterial properties, and antistatic properties. It is stated that it can be done. Furthermore, in Cited Document 3, the end group of the carboxylic acid polymer introduced by graft polymerization is alkali metal chlorinated to give a specific amount of ammonia deodorizing property, SR antifouling property, antistatic property, etc. Techniques for improving are disclosed.
JP 2005-273068 A JP-A-9-188970 JP 2000-226765 A

  However, both technologies are common in that they employ a means of adhering a resin composition having certain characteristics to the fibers, which leaves issues for washing durability and application development, Such improvement is desired.

  The present invention eliminates the drawbacks of the prior art as described above, has deodorant properties, antistatic properties, and antifouling properties, is also excellent in washing durability, and is widely applied to uniform clothing in general. It is an object of the present invention to provide a fabric that is applicable to uniform garments used in the food manufacturing field, medical field, precision machine manufacturing field, and the like.

  The inventors of the present invention have arrived at the present invention as a result of intensive studies in order to solve such problems.

That is, the gist of the present invention is as follows.
(1) A cloth comprising a vinyl polymer containing a hydrophilic polyester and a deodorant on the surface, and after 30 washings according to JIS L0217 103 method, the ammonia deodorization rate is 70% or more. A fabric having a friction voltage of 800 V or less and a recontamination prevention grade of 4 or more.
(2) The vinyl polymer contains a bifunctional vinyl monomer as a structural unit, and is at least one polymer selected from the group consisting of acrylate resins, methacrylate resins, epoxy acrylate resins, and epoxy methacrylate resins. The fabric according to (1) above.
(3) The fabric according to (1) or (2), wherein the deodorant is a metal oxide having an average particle size of 0.01 to 10.00 μm.

  The fabrics of the present invention have deodorant properties, antistatic properties, and antifouling properties, and are excellent in washing durability. Therefore, the fabric of the present invention can be widely applied to uniform clothing in general, and is particularly suitable for uniform clothing used in the food manufacturing field, medical field, precision machine manufacturing field, and the like.

  The fabric of the present invention is intended for fabrics, knitted fabrics, nonwoven fabrics and the like formed from fibers.

  Examples of fibers that can constitute the fabric of the present invention include polyester fibers such as polyethylene terephthalate, polybutylene terephthalate, polypropylene terephthalate, and polylactic acid, polyamide fibers such as nylon 6 and nylon 66, acrylic fibers, and polyurethane fibers. Natural fibers such as cotton, wool, silk, hemp and bamboo, recycled fibers such as viscose rayon, copper ammonia rayon, solvent-spun cellulose fiber, semi-synthetic fibers such as acetate, etc. , Mixed spinning, mixed fiber, union, knitting, and the like.

  The form of the fiber may be either a long fiber or a short fiber, and the cross-sectional shape is not particularly limited. Further, the fiber may contain titanium dioxide, silicon dioxide, pigment, etc. depending on the purpose.

  In the present invention, a vinyl polymer is used. The use of a vinyl polymer greatly contributes to the improvement of washing durability, which will be described later, such as deodorizing properties, antistatic properties and antifouling properties.

  As the vinyl polymer in the present invention, any polymer can be used as long as it is a polymer mainly composed of a vinyl monomer as a structural unit. Examples of the vinyl monomer include acrylic acid, methacrylic acid, maleic acid, itaconic acid, butenetricarboxylic acid, fumaric acid, ctronic acid, vinylpropionic acid, methylvinylsulfonic acid, styrenesulfonic acid, α-methylstyrenesulfonic acid, sulfone. Propyl acrylate, sulfopropyl methacrylate, 2-hydroxy-3-acryloyloxypropane sulfonic acid, 2-hydroxy-3-methacryloyloxypropane sulfonic acid, 2-acryloyloxyethane sulfonic acid, 2-methacryloyloxyethane sulfonic acid Allylsulfonic acid, methallylsulfonic acid, 2-acrylamido-2-methylpropanesulfonic acid, 2-methacrylamide-2-methylpropanesulfonic acid, 3-acrylamido-2-hydroxypropanesulfonic acid, 3 Methacrylamide-2-hydroxypropane sulfonic acid, t- butyl acrylamide sulfonic acid, such as allyl sulfosuccinic acid, or derivatives thereof. In the present invention, vinyl monomers are used alone or in combination.

  In the present invention, as the vinyl polymer, a bifunctional vinyl monomer is preferably used from the viewpoint of antistatic properties and antifouling properties. As the bifunctional vinyl monomer, diacrylate is preferable, and specifically, polyethylene glycol diacrylate, polypropylene glycol diacrylate, polyethylene glycol dimethacrylate, polypropylene glycol dimethacrylate, polyethylene glycol epoxy diacrylate, polypropylene glycol epoxy diacrylate, Examples include polyethylene glycol epoxy dimethacrylate and polypropylene glycol epoxy dimethacrylate. And when using the acrylate mentioned here, as a repeating number of the polyethylene glycol or polypropylene glycol which are repeating units arranged in the molecule, 1 to 23 are preferable, and this is 100 to 100 when converted to the molecular weight of only the repeating unit. Equivalent to 1000.

  Here, as a structural formula of diacrylate, the following formula (1) represents an acrylate-based general formula, and formula (2) represents an epoxy acrylate-based general formula.

  As the vinyl monomer in the present invention, it is preferable to use a bifunctional vinyl monomer as described above. When this is included as a constituent unit in the molecule, the vinyl polymer is an acrylate resin, a methacrylate resin, an epoxy acrylate resin, or an epoxy. It becomes at least one polymer selected from the group consisting of methacrylate resins.

  In the present invention, the vinyl polymer as described above is used, but in the present invention, this is not used alone, but from the viewpoint of deodorizing property, antistatic property and antifouling property, hydrophilic polyester, deodorant and Is used.

  Examples of the hydrophilic polyester include condensation polymers of polyalkylene glycols such as polyethylene glycol and polypropylene glycol and dicarboxylic acid compounds such as terephthalic acid and sulfoisophthalic acid. The molecular weight of the hydrophilic polyester is preferably 100 to 10,000.

  The amount of the hydrophilic polyester used is 1 to 100 parts by mass with respect to 100 parts by mass of the vinyl polymer alone (hereinafter, the vinyl polymer alone refers to a vinyl polymer in a state not containing the hydrophilic polyester and the deodorant described below). It is preferable to set it as 100 mass parts, and 5-50 mass parts is more preferable. If the amount of the hydrophilic polyester used is less than 1 part by mass, the antistatic property and antifouling property tend not to be improved, which is not preferable. On the other hand, if it exceeds 100 parts by mass, the dyeing fastness tends to decrease, which is not preferable.

  In addition, the deodorant may be either inorganic or organic, and is not particularly limited. However, from the viewpoint of exerting excellent deodorant properties in any environment, Zn, Si, Ti, Fe, Al Alternatively, a metal oxide containing any element of Zr or a mixture thereof is preferable. Note that the deodorant may have a photocatalytic function.

  The average particle size (primary particle size) of the deodorant is not particularly limited, but is preferably 0.01 to 10.00 μm. If the average particle size is less than 0.01 μm, the production cost for making the deodorant fine powder becomes very high, which is not preferable. On the other hand, if it exceeds 10.00 μm, the deodorant tends to fall off from the fabric surface and the washing durability is lowered, which is not preferable.

  As a usage-amount of a deodorizer, it is preferable to set it as 0.1-50.0 mass parts with respect to 100 mass parts of vinyl polymer single, and 1.0-30.0 mass parts is more preferable. If the amount of the deodorant used is less than 0.1 parts by mass, the desired deodorant tends to be difficult to obtain. On the other hand, if it exceeds 50.0 parts by mass, not only the improvement in deodorant can be expected, Manufacturing costs tend to increase, both of which are not preferred.

  In the present invention, a vinyl polymer containing the hydrophilic polyester and the deodorant as described above is used and used as provided on the surface of the fabric. At this time, the vinyl polymer is preferably attached in an amount of 1 to 30% by mass, more preferably 1 to 20% by mass with respect to the mass of the fiber fabric (fabric before processing). When the adhesion amount of the vinyl polymer is less than 1% by mass, desired antistatic properties and antifouling properties tend to be difficult to obtain. On the other hand, when it exceeds 30% by mass, the texture tends to be hard, both of which are preferable. Absent.

  The fabrics of the present invention have deodorant properties, antistatic properties, and antifouling properties, and are excellent in washing durability. “Excellent washing durability” means “JAFET standard detergent” (polyoxyethylene alkyl ether) specified in the deodorant processed fiber product certification standard (JED301) issued by the Japan Fiber Evaluation Technology Council. It means that the effect can be maintained even after using and washing 30 times according to JIS L0217 103 method.

  In the present invention, the ammonia deodorization rate after washing 30 times according to the JIS L0217 103 method is required to be 70% or more as a deodorant index. By setting the ammonia deodorization rate within this range, it is possible to suppress the odor from being attached to the fabric, so that the effect of improving the wearing comfort of the garment can be expected.

  The ammonia deodorization rate shall be measured according to the instrumental analysis test method defined in the deodorant processed fiber product certification standard (JED301) of the Japan Fiber Evaluation Technology Council. Specifically, prepare a 3L Tedlar bag with an initial ammonia concentration adjusted to 100ppm (usually using a Tedlar bag with a maximum volume of 5L), and place a 10cm square humidity-controlled sample in this for 2 hours. The residual ammonia concentration in the Tedlar bag is measured with a detector tube. On the other hand, the ammonia concentration when the sample is not placed is also measured. After the measurement, the reduction rate (%) is calculated based on the following formula, and this is used as the ammonia deodorization rate.

  Setting the ammonia deodorization rate within the above range can be achieved by including a predetermined amount of a deodorant in the vinyl polymer and adhering the polymer to the surface of the fiber fabric in a predetermined amount.

  Further, as an index of antistatic property, the frictional voltage after washing 30 times according to JIS L0217 103 method needs to be 800 V or less. If it exceeds 800V, it will become charged during wearing and adsorb dirt particles in the air, making it easy to get dirty, making it impossible to apply to uniform clothing used in the food manufacturing field.

  The frictional voltage is measured according to JIS L1094B method.

  Setting the frictional voltage within the above range can be achieved by including a predetermined amount of hydrophilic polyester in the vinyl polymer and then attaching a predetermined amount of polymer to the surface of the fiber fabric.

  Further, as an index of antifouling property, the recontamination preventing property grade after washing 30 times according to JIS L0217 103 method is required to be 4th grade or higher. If the recontamination prevention grade is less than the fourth grade, dirt remains even after washing. The re-contamination prevention grade refers to 0.2 ml of B heavy oil dropped on the fabric, left for 30 minutes, washed once according to JIS L0217 103 method, dried, and judged according to JIS L0805 contamination gray scale. Refers to the residual contamination level. This re-contamination prevention grade is rated at grade 5, with grade 1 being the worst and grade 5 being the best. The B heavy oil corresponds to the second type heavy oil described in JIS K2205.

  Setting the re-contamination prevention grade within the above range can be achieved by including a predetermined amount of hydrophilic polyester in the vinyl polymer and adhering a predetermined amount of polymer to the fiber fabric surface.

  Next, a method for producing the fabric of the present invention will be described.

  In the fabric of the present invention, after first preparing a fiber fabric composed of the above-mentioned fibers, an aqueous solution containing a vinyl monomer, a hydrophilic polyester and a deodorant is applied to the fiber fabric, and then the monomer is polymerized. Can be obtained. The fiber fabric may be scoured, alkali reduced, or dyed in advance.

  Moreover, it does not specifically limit as a method of providing aqueous solution to a fiber fabric, Well-known methods, such as a padding method, a spray method, a kiss roll coater method, and a slit coater method, can be employ | adopted suitably.

  Arbitrary means can be adopted as means for polymerizing the vinyl monomer, and after application of the aqueous solution, it is first air-dried or pre-dried by heating, and then subjected to low-temperature plasma treatment, dry heat treatment, steam heat treatment, cold batch treatment or ultraviolet treatment. Means can be adopted. Of these, low temperature plasma treatment and steam heat treatment are preferred from the viewpoint of polymerization efficiency and stability.

  Similarly, from the viewpoint of polymerization efficiency and stability, the aqueous solution preferably contains a polymerization initiator. Examples of the polymerization initiator include ammonium persulfate, potassium persulfate, cerium ammonium nitrate, hydrogen peroxide. Inorganic polymerization initiators such as 2,2′-azobis (2-amidinopropane) dihydrochloride, 2,2′-azobis (N, N′-dimethyleneisobutyramide) dihydrochloride, 2- A radical initiator such as an organic radical initiator such as (carbamoylazo) isobutyronitrile is generally used, but a so-called redox initiator using a peroxide and a reducing substance in combination can also be used. Examples of the redox initiator include peroxides such as ammonium persulfate and potassium persulfate, and examples of the reducing substance include a reaction product of sodium sulfoxylate and formalin, hydrosulfite, and the like.

  The amount of the polymerization initiator used is preferably 0.1 to 15.0 parts by mass with respect to the mass of the vinyl monomer alone.

  Furthermore, the aqueous solution may contain a polymerization inhibitor. By using a polymerization inhibitor in combination, polymerization in a low temperature range can be suppressed, and this is advantageous in obtaining a vinyl polymer having a desired degree of polymerization. Polymerization inhibitors include quinones such as benzoquinone, hydroquinone and methoxyphenol, polyoxy compounds such as tert-butylcatechol, organic sulfur compounds such as sodium dimethyldithiocarbamate and diethylhydroxylamine, nitro compounds, diethylhydroxylamine and isopropylhydroxyl. And amino compounds such as amines.

  As a usage-amount of a polymerization inhibitor, 0.01-2.00 mass% is preferable with respect to the mass of a vinyl-type monomer independent.

  As described above, low temperature plasma treatment and steam heat treatment are preferable as means for polymerizing the vinyl monomer after applying the above aqueous solution to the fiber fabric. Specifically, when the low temperature plasma treatment is employed, the vinyl monomer can be polymerized by placing the fiber fabric in the plasma atmosphere for a certain period of time. Low-temperature plasma is generated as a result of excitation of oxygen molecules by applying high-frequency energy to oxygen or a mixed gas containing oxygen in a reduced pressure state.

Oxygen or a mixed gas containing oxygen is a gas obtained by mixing 100% oxygen or oxygen and another gas. Examples of other gases include inert gases such as helium and argon, nitrogen, water vapor, and carbon dioxide. Further, the frequency of the high frequency energy is not particularly limited as long as it is a frequency that can generate low temperature plasma, and can be used in the range of 1 to 3000 MHz. However, in practical use, it is preferable to use any of 13.56 MHz, 27.12 MHz, 40.68 MHz, 915 MHz, and 2450 MHz according to regulations such as the Radio Law. The power of the high frequency energy (high frequency power) is preferably 0.1 to 10.0 W / cm ² . Further, the degree of vacuum at the time of processing is not particularly limited as long as low temperature plasma is generated, but in practice, 13 to 2670 Pa is preferable, and 40 to 1330 Pa is more preferable. The processing time is not particularly limited, but is preferably in the range of 1 to 240 seconds.

  Further, when the steam heat treatment is employed, either the treatment based on the normal pressure steam method or the treatment based on the high pressure steam method can be adopted, but it is preferable to use the normal pressure steam method from the viewpoint of cost. As temperature of a steam heat processing, 80-180 degreeC is preferable and 98-150 degreeC is more preferable. Further, the time for the steam heat treatment is preferably 1 to 20 minutes.

  After the vinyl monomer is polymerized into a vinyl polymer, the fabric may be subjected to a softening treatment, a water repellent treatment, a flame retardant treatment, or the like, if necessary.

  Next, the present invention will be specifically described with reference to examples.

Example 1
Polyester multifilament processed yarn 167dtex48f is used as the warp and polyester multifilament processed yarn 334dtex96f is used as the weft. A twill weave with a warp density of 128 / 2.54cm and a weft density of 58 / 2.54cm is woven and scoured in the usual manner did.

  Next, this twill fabric was impregnated with an aqueous solution having the composition shown in Formula 1 below, then drawn with a mangle at a drawing rate of 80% by mass, and preliminarily dried at 130 ° C. for 60 seconds.

<< Prescription 1 >>
Vinyl monomer (polyethylene glycol 400 epoxy dimethacrylate) 60g / L
Hydrophilic polyester (“SR6200 (trade name)” manufactured by Takamatsu Yushi Co., Ltd.) 30 g / L
Zinc oxide-containing deodorant (“Denasis Y-UMN (trade name)” manufactured by Nagase Color Chemical Co., Ltd., average particle size: 0.10 μm) 30 g / L

Thereafter, the twill fabric was subjected to low-temperature plasma treatment under the conditions of air as the gas species, 133 Pa as the degree of vacuum, 13.56 MHz as the frequency, 1.0 W / cm ² as the high frequency power, and 60 seconds as the treatment time, to obtain the fabric of the present invention. It was.

  At this time, the adhesion amount of the vinyl polymer containing the hydrophilic polyester and the deodorant to the fiber fabric (fabric before processing) was 5.5% by mass. Moreover, the usage-amount of hydrophilic polyester and a deodorizer was 10 mass parts and 10 mass parts, respectively with respect to 100 mass parts of vinyl polymer single.

(Example 2)
A fabric of the present invention was obtained in the same manner as in Example 1 except that an aqueous solution having the composition shown in Formula 2 below was used instead of Formulation 1.

  In the obtained fabric, the adhesion amount of the vinyl polymer containing the hydrophilic polyester and the deodorant to the fiber fabric is 8.7% by mass, and the use amount of the hydrophilic polyester and the deodorant is vinyl. The amount was 6 parts by mass and 6 parts by mass, respectively, based on 100 parts by mass of the single polymer.

<< Prescription 2 >>
Vinyl monomer (polypropylene glycol 200 epoxy dimethacrylate) 100g / L
Hydrophilic polyester (“Nice Pole PR-99 (trade name)” manufactured by Nikka Chemical Co., Ltd.) 30 g / L
Titanium oxide deodorant having a photocatalytic function (“Zaobaset Nano Ti-2000 (trade name)” manufactured by Daiwa Chemical Industry Co., Ltd., average particle size 0.06 μm) 30 g / L

( Reference Example 1 )
Weaving a plain fabric with a warp density of 66 / 2.54 cm and a weft density of 56 / 2.54 cm using polyester multifilament processed yarn 334dtex96f as warp and polyester cotton blended yarn 45-number double yarn as weft. Scouring, bleaching and mercerizing.

  Next, this plain woven fabric was impregnated with an aqueous solution having the composition shown in Formula 3 below, then squeezed with a mangle at a squeezing rate of 80% by mass, and preliminarily dried at 130 ° C. for 60 seconds.

<< Prescription 3 >>
Vinyl monomer (polyethylene glycol 1000 dimethacrylate) 100g / L
Hydrophilic polyester (“Nice Pole PR-99 (trade name)” manufactured by Nikka Chemical Co., Ltd.) 30 g / L
Zinc oxide composite deodorant ("KD211GF (trade name)" manufactured by Lhasa Industries Co., Ltd., average particle size 10.00 μm) 30 g / L
Polymerization initiator (ammonium persulfate) 10 g / L

Thereafter, this plain fabric was steam-heated at 99 ° C. for 5 minutes based on the atmospheric steam method to obtain a fabric of Reference Example .

  At this time, the adhesion amount with respect to the fiber fabric of the vinyl-type polymer containing hydrophilic polyester and a deodorizer was 8.7 mass%. Moreover, the usage-amount of hydrophilic polyester and a deodorizer was 6 mass parts and 6 mass parts with respect to 100 mass parts of vinyl-type polymer single, respectively.

(Comparative Example 1)
The twill fabric after scouring used in Example 1 was exhausted at 130 ° C. for 30 minutes using an aqueous solution having the composition shown in the following formulation 4 and dried, and then the composition shown in the following formulation 5 was dried. After being impregnated in an aqueous solution, the film was squeezed with a mangle at a squeezing rate of 80% by mass and pre-dried at 130 ° C. for 60 seconds.

<< Prescription 4 >>
Hydrophilic polyester (“Parasolve PET-2 (trade name)” manufactured by Ohara Palladium Co., Ltd.) 3% owf

<< Prescription 5 >>
Acrylic polymer binder (“Denasys Y-AE (trade name)” manufactured by Nagase Color Chemical Co., Ltd.) 30 g / L
Zinc oxide-containing deodorant (“Denasis Y-UMN (trade name)” manufactured by Nagase Color Chemical Co., Ltd., average particle size: 0.10 μm) 30 g / L

  Thereafter, the twill fabric was dry heat treated at 170 ° C. for 1 minute to obtain a comparative fabric.

(Comparative Example 2)
The mercerized plain woven fabric used in Reference Example 1 was impregnated with an aqueous solution having the composition shown in Formula 6 below, then squeezed with a mangle at a squeeze rate of 80% by mass, and pre-dried at 130 ° C. for 60 seconds.

<< Prescription 6 >>
Hydrophilic polyester (“SR6200 (trade name)” manufactured by Takamatsu Yushi Co., Ltd.) 30 g / L
Catalyst for hydrophilic polyester (“SR-CA-1 (trade name)” manufactured by Takamatsu Yushi Co., Ltd.) 10 g / L
Metal oxide composite deodorant (“New The Oberset NH-S12 (trade name)” manufactured by Daiwa Chemical Industry Co., Ltd.) 50 g / L

  Thereafter, this plain woven fabric was dry heat-treated at 170 ° C. for 1 minute to obtain a comparative fabric.

The ammonia deodorization rate, the frictional voltage, and the re-contamination prevention grade before and after washing of the fabrics according to Examples 1 and 2, Reference Example 1 and Comparative Examples 1 and 2 obtained as described above were determined. Shown in Table 1 below.

As is apparent from Table 1, the fabrics according to Examples 1 and 2 were excellent in deodorizing property, antistatic property and antifouling property even after 30 washings. Therefore, the obtained fabric is suitable for various uniform garments, particularly uniform garments used in the food manufacturing field, the medical field, the precision machine manufacturing field, and the like. On the other hand, the fabrics according to Comparative Examples 1 and 2 differed from the Examples in that no vinyl polymer was used, resulting in poor deodorant, antistatic and antifouling washing durability. Therefore, although it can be used for uniform clothing, its application range is limited.

Claims (2)

A fabric comprising a vinyl polymer containing a hydrophilic polyester and a deodorant on the surface and satisfying the following (1) to (4), and after washing 30 times according to JIS L0217 103 method, ammonia A fabric having a deodorization rate of 85% or more , a frictional voltage of 300 V or less , and a recontamination prevention grade of 4 or more.
(1) The vinyl polymer contains a bifunctional vinyl monomer as a structural unit, and at least one selected from the group consisting of epoxy acrylate resins and epoxy methacrylate resins.
(2) The content of the hydrophilic polyester is 6 to 10 parts by mass with respect to 100 parts by mass of the vinyl polymer.
(3) The content of the deodorant is 6 to 10 parts by mass with respect to 100 parts by mass of the vinyl polymer.
(4) The adhesion amount of the vinyl polymer is 5.5 to 30% by mass. The fabric according to claim 1, wherein the deodorant is a metal oxide having an average particle size of 0.01 to 10.00 µm.