JP2007231428A - Working glove - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a working glove made of NBR as a raw material, excellent in oil resistance and solvent resistance, and having all of flexibility, gripping property and coating strength. <P>SOLUTION: The working glove is obtained by using an NBR compound prepared by blending NBR latex with a copolymer of acrylonitrile, (meta) acrylic acid and alkyl acrylate, and having 36-53 mass% of total acrylonitrile as a material to form a coating film. Addition of the copolymer results in increase of the total amount of the acrylonitrile, so as to maintain flexibility, ensure slip-preventive effect, prevent reduction in coating film strength and cause no elution of polymer having a low polymerization degree while reinforcing the oil resistance and the solvent resistance. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a work glove having oil resistance and solvent resistance.

As work gloves requiring oil resistance and solvent resistance, support gloves and unsupport gloves in which a film is formed of fluorine rubber, NBR (acrylonitrile butadiene rubber), urethane elastomer or the like have been used. Among these, NBR gloves are used in a wide range of fields because the raw materials are inexpensive (Patent Documents 1 and 2).
JP-A-5-59603 JP-A-4-333604

  An NBR latex having an acrylonitrile content of about 20% by mass to about 40% by mass is used for an NBR glove that is generally regarded as an oil-resistant glove. If a grade having a high acrylonitrile content is used, the oil resistance and solvent resistance are enhanced, but the flexibility is impaired and the use for working gloves is insufficient. On the other hand, when the acrylonitrile content exceeds about 37% by mass, the film formability is poor and the processability is difficult. It is said that polymerization of NBR exceeding about 45% by mass is difficult. Blends of high acrylonitrile-containing NBR and low acrylonitrile-containing NBR cause a decrease in tensile strength and are not practical.

  On the other hand, although NBR is oil-resistant and solvent-resistant, it is weak to an aromatic solvent frequently used for spray coating and easily swells. As a technique for improving the resistance to aromatic solvents, it is conceivable to use other materials such as fluorine-based or silicon-based polymers blended with NBR-based latex, but gloves containing such materials may be used. When attached and grabbed, residual monomers and polymers with a low degree of polymerization may be transferred, which is disliked in painting operations.

  In order to improve grip performance, a chemical foaming agent or the like may be added to NBR latex for foaming, or air may be mechanically taken in and foamed to form an anti-slip layer. However, such a non-slip layer has a porous structure like a sponge, so it is very easy to absorb and hold the solvent, swells in a few seconds, loses the anti-slip effect, and becomes slippery instead. Strength will fall.

  The present invention solves the above problems, and an object of the present invention is to provide a working glove that uses NBR as a raw material, has excellent oil resistance and solvent resistance, and has flexibility, grip properties, and film strength.

  In order to solve the above-mentioned problems, the work glove of the present invention has a total acrylonitrile amount of 36% by mass to 53% by blending an NBR latex with a copolymer of acrylonitrile, (meth) acrylic acid and alkyl acrylate. % NBR compound was used as a material to form a film.

  Since the total acrylonitrile amount is increased by the addition of the above-mentioned copolymer, it is possible to maintain flexibility while ensuring oil resistance and solvent resistance, to ensure a non-slip effect, and to suppress a decrease in film strength. There is no elution of low-grade polymers.

  The NBR latex used in the present invention is a dispersion of NBR molecules having 36% to 40% by weight of acrylonitrile, 55 to 59% by weight of butadiene, and 5% by weight or less of carboxyl-modified groups. . A preferred content of acrylonitrile in the NBR molecule is about 37% by weight.

  The acrylonitrile segment, which is the first component of the copolymer blended with the NBR latex, has good compatibility with the NBR molecule, and as the content increases, the properties of the formed film, particularly the abrasion resistance, Oil resistance and solvent resistance are improved. The content of acrylonitrile in the copolymer is preferably 37% by mass to 85% by mass. If it is less than 37% by mass, the effect of improving the solvent resistance is particularly low, and polymerization exceeding 85% by mass is currently difficult. The solvent resistance mentioned here is resistance to an aromatic solvent.

  The second component of the copolymer (meth) acrylic acid, that is, acrylic acid or methacrylic acid, is necessary for stabilizing the copolymer itself, and is co-crosslinked with the NBR molecule. It works to prevent dissolution of coalescence. The content of acrylic acid or methacrylic acid in the copolymer is preferably 1% by mass to 18% by mass. If the amount is less than 1% by mass, the stability of the copolymer (latex) tends to be inferior. If the amount exceeds 18% by mass, the copolymer tends to be enlarged when added to the NBR latex, and coagulation tends to occur. A more preferable content is 2% by mass to 12% by mass. When an ionic polymer in which a metal ion selected from Na, Li, K, Ca, Mg, Zn, Al or the like is bonded to a carboxyl group of acrylic acid or methacrylic acid is used, the tear strength is improved.

  The third component of the copolymer, alkyl acrylate, is n-butyl acrylate, n-butyl methacrylate, iso-butyl acrylate, iso-butyl methacrylate, ethyl acrylate, 2-ethylhexyl acrylate, 2-ethylhexyl methacrylate, iso -Propyl acrylate, iso-propyl methacrylate, lauryl acrylate, lauryl methacrylate and the like. The alkyl acrylate segment is effective in improving the flexibility and resilience of the film. In particular, n-butyl acrylate has a high effect.

  In order to obtain wear resistance and solvent resistance suitable for work gloves, the copolymer (solid content) with a high content of acrylonitrile described above is added to 1-100 parts by weight of NBR latex (solid content). Blend 100 parts by weight. Depending on the blend amount, the total acrylonitrile amount is 36 mass% to 63 mass%. More preferably, 10-40 parts by mass are blended. Depending on the blend amount, the total acrylonitrile amount is 36% by mass to 53% by mass. When acrylonitrile in NBR has a preferable content of 37% by mass, the total acrylonitrile amount is 38% by mass to 50% by mass, which is particularly preferable.

  NBR latex blends with natural rubber, isoprene rubber, chloroprene rubber, acrylic rubber, styrene-butadiene copolymer, acrylonitrile-butadiene copolymer, polyurethane, butyl rubber, polybutadiene rubber, etc. will not lose solvent resistance or strength. You may blend to the extent. The term natural rubber includes not only natural rubber alone but also natural rubber-methyl methacrylate copolymer, epoxidized modified natural rubber copolymer and the like. The term acrylic rubber includes copolymers containing acrylonitrile, methyl methacrylate, allyl methacrylate, N-methylol acrylamide, acrylic acid, methacrylic acid, and the like.

You may add a well-known crosslinking agent, a vulcanization accelerator, anti-aging agent, a thickener, etc. to NBR latex.
In order to enhance the anti-slip effect, at least the surface layer portion of the film may be a foam layer. Further, the surface of the foam layer may be uneven. If the film is made porous by foaming and its surface is made uneven, the liquid will be sucked into the recess and will not intervene between the object and high grip force even when handling water, oil, and even solvents. Can be obtained. As described above, since the total amount of acrylonitrile is high, swelling does not occur even when liquid is sucked into the recess. For foaming, a foaming agent, a foam stabilizer, a chemical foaming agent, a microcapsule enclosing a gas or the like can be added.

  As foaming agents, alkyl sulfate Na, alkyl ether sulfate Na, dialkyl sulfosuccinate Na, N-lauroylamidopropyldimethylbetaine, alkylamidopropyldimethylamine oxide, N-alkylmonoamide disodium sulfosuccinate, potassium oleate, castor oil Potash is available. As the foam stabilizer, polyoxyethylene alkylamino ether, polyacrylic acid soda, ammonium stearate, peptide, β-alanine, alkyl dipropionate soda and the like can be used. The distinction between a foaming agent and a foam stabilizer here is not strict. Each of these foaming agents and foam stabilizers is preferably added in an amount of 1-10 parts by mass with respect to 100 parts by mass of the NBR latex (solid content).

  Examples of the chemical foaming agent include toluenesulfonyl hydrazide, PP'oxybis (benzosulfonyl hydrazide), azodicarbonamide, azobisisobutyronitrile and the like. As the microcapsules, thermally expandable microspheres having an average particle diameter of 1 to 50 μm, in which low boiling point hydrocarbons are encapsulated in a shell wall made of a copolymer such as vinylidene chloride or acrylonitrile can be used. These chemical foaming agents and microcapsules are preferably added in an amount of 1-10 parts by mass with respect to 100 parts by mass of NBR latex (solid content).

  Since chemical foaming agents are likely to decompose and disperse when dispersed in water, in order to obtain the desired amount of air bubbles, air is mechanically taken into the compound using a foaming agent or foam stabilizer. Is convenient. In addition, when microcapsules are added, it is difficult to adjust the coefficient of thermal expansion when the film is thermoformed, and the NBR film is first thermally fused to form a skin layer on the surface. Since there is no escape route for gases such as boiling hydrocarbons and the surface of the film may be undulated, it is preferable to use a foaming agent or a foam stabilizer in combination to mechanically take air into the compound.

  In order to further enhance the anti-slip effect, various kinds of particles, for example, organic particles such as acrylic, urethane, natural rubber powder, EVA powder, PVC, NBR, and inorganic particles such as silica, calcium carbonate, mica may be added. Good.

The bubble content of the compound can be arbitrarily adjusted from 1% to 300% by a continuous mechanical foaming machine or a home mixer. Although the bubble content can be measured by specific gravity, the bubble content is almost the same as that in the compound state even after molding. On the surface and the layer within the film, the bubbles of an average diameter 10Myuemu～400myuemu (marks) is 10 to 130 per 1 cm ^2, preferably included. Rather than using only chemical foaming agents and microcapsules, using the method of mechanically taking in air as described above results in open cells, making it difficult to create a skin layer, and opening more air bubbles on the film surface. To do.

  In order to manufacture the gloves of the present invention, for example, a pottery mold is immersed in a coagulant solution (aqueous solution of calcium nitrate, cyclohexylamine, zinc chloride, methanol, etc.) and then foamed as described above (hereinafter referred to as foaming compound). And then heat set (about 75 ° C. for about 10 minutes), and then immersed in an acrylic resin or urethane resin emulsion (preferably a hard glass transition temperature Tg of 15 ° C. to 65 ° C.) A film is formed by curing at 110-130 ° C. for about 40-60 minutes. The reason for dipping in an emulsion of acrylic resin or urethane resin is to form a film (thickness 1-5 μm) for smooth wearing on the inside of the glove. Chlorination may be performed by dipping in hypochlorous acid and hydrochloric acid or acetic acid solution without performing this dipping. Reaching can be performed before curing or after mold release.

  After the earthenware mold is dipped in the coagulant solution, it is coated with a compound that forms a liquid-impermeable NBR film and semi-cured, and the film may be formed using a foaming compound in the same manner as described above. Here, the liquid-impermeable NBR film refers to an NBR film that does not allow water to penetrate when tested according to the Water Leak Test of EUROPEAN STANDARD EN374, and uses the above-mentioned NBR latex alone or the above-mentioned NBR film. It can be formed using defoamed foam compounds.

  A metal hand mold may be covered with a fiber glove base material (original hand), dipped in a coagulant solution, and a foamed film may be formed on the glove base material using a coating method or a dipping method. A liquid-impermeable NBR film and a foam film may be sequentially formed on the glove base material.

  Textile glove base material is knitted and woven using natural fiber or chemical fiber such as cotton, wool, polyester, nylon, aramid, polyethylene, or composite yarn containing metal, PVA, carbon, glass fiber, etc. Made of non-woven fabric and sewn into a glove shape.

  In order to give unevenness to the surface of the foam layer (foam coating) in order to improve the wear resistance and anti-slip effect, the foaming compound is squeegeeed, and the foaming compound is thermoformed with the unevenness by the screen method, There is a method in which after setting and semi-gelling (semi-crosslinking), it is solidified by hot pressing with an uneven plate.

Here, the heat press refers to pressing a semi-gelled foam compound at a press pressure of 1 to 100 kgf / cm ² and a temperature of about 60 to 300 ° C. using a metal or synthetic resin mold. Say. The air bubbles in the pressed portion are crushed and cause heat fusion, the air content is reduced, and the wear resistance strength is increased.

  However, if the press pressure is increased, the wear resistance strength is increased, but the number of bubble holes opened on the surface of the film is reduced. From the viewpoint of the anti-slip effect, it is preferable to lightly press or not press. In particular, partial pressing may be performed to reinforce only the fingertip or palm portion that is easily worn, or an uneven plate may be used instead of a flat plate for the press die.

  When hot pressing is performed on the uneven plate, the bubbles at the location where the convex portion hits are crushed to cause heat fusion, and the film is provided with an uneven pattern. When the heat-sealed state is confirmed by a microscope, the bubble content in the concave portion is compressed to 10% to 90% by volume of the bubble content in the convex portion. Since the bubble content can be adjusted by appropriately determining the height of the convex portion of the concavo-convex plate (the depth of digging of the concave portion), it is possible to ensure both wear resistance and anti-slip effect.

  A glove with irregularities is shown in FIGS. In the figure, reference numeral 1 is a master hand, 2 is a foamed film, 3 is a pressed portion, and 4 is a bubble (scratch). When forming a liquid-impermeable NBR film, it is disposed between the hand 1 and the foam film 2.

  The work glove of the present invention blends a copolymer of acrylonitrile, (meth) acrylic acid and alkyl acrylate with NBR latex to increase the total amount of acrylonitrile, so there is no film swelling against the solvent, Solvent resistance and anti-slip effect are improved, oil resistance, flexibility and film strength can be maintained, and there is no elution of a polymer having a low polymerization degree.

Hereinafter, the present invention will be specifically described with reference to examples. However, these examples do not limit the present invention.
Example 1
The compound (1) shown below has a ratio (A / B) of 95 NBR latex and a copolymer latex of acrylonitrile, alkyl acrylate, and (meth) acrylic acid (hereinafter referred to as an acrylic acid copolymer). / 5, 90/10, 80/20, 70/30, 60/40, 50/50.

  After immersing a plurality of earthenware molds in a calcium nitrate solution, they are immersed in one of the prepared compounds, heat-set at 75 ° C. for 10 minutes, and then 3% -acrylic resin emulsion (Gantz Kasei) 6 types of gloves were produced by dipping in a glass transition temperature (Tg) of about 20 ° C., and being cured at 130 ° C. for 40 minutes.

（実施例２）
以下の配合２に示すコンパウンドを家庭用ミキサーで攪拌して、それぞれ気泡含有率１５％、３０％、７０％の発泡コンパウンドを準備した（平均泡径：約４０μｍ）。

(Example 2)
The compound shown in the following formulation 2 was stirred with a household mixer to prepare foaming compounds having an air bubble content of 15%, 30%, and 70%, respectively (average foam diameter: about 40 μm).

  Nylon knitting masters are put on a plurality of metal hand molds, each immersed in a calcium nitrate solution, then immersed in any one of the prepared foamed compounds, at 75 ° C. for 10 minutes, and then at 130 ° C. Curing for 40 minutes produced three types of gloves with a foam coating.

（実施例３）
以下の配合３に示すコンパウンドを家庭用ミキサーで攪拌して、気泡含有率が１５％、３０％、７０％の３種類の発泡コンパウンドを準備した（平均泡径：約４０μｍ）。

(Example 3)
The compound shown in the following formulation 3 was stirred with a home mixer to prepare three types of foaming compounds having an air bubble content of 15%, 30%, and 70% (average foam diameter: about 40 μm).

  A plurality of metal hand molds were covered with nylon knitting hands, and each was dipped in a calcium nitrate solution, then dipped in a compound of the following formulation 4, heat set at 75 ° C. for 10 minutes, and then prepared It was immersed in any one of the foaming compounds of Formulation 3, and cured at 75 ° C. for 10 minutes and at 130 ° C. for 40 minutes to prepare nine types of gloves having a liquid-impermeable film and a foam film.

（実施例４）
以下の配合５および配合６に示すコンパウンドを家庭用ミキサーで攪拌して、それぞれ気泡含有率１５％の発泡コンパウンドを準備した。

Example 4
The compounds shown in the following Formulas 5 and 6 were stirred with a home mixer to prepare foamed compounds each having a bubble content of 15%.

  A plurality of metal hand molds are covered with nylon knitting masters, each is immersed in a calcium nitrate solution, then immersed in the prepared foaming compound of Formulation 5 or 6, and heat-set at 75 ° C. for 10 minutes, 130 Two types of gloves equipped with a foamed film were prepared by curing at 40 ° C. for 40 minutes.

（実施例５）
上記の配合５および配合６に示すコンパウンドを家庭用ミキサーで攪拌して、それぞれ気泡含有率１５％の発泡コンパウンドを準備した。

(Example 5)
The compounds shown in the above formulas 5 and 6 were stirred with a home mixer to prepare foamed compounds each having a bubble content of 15%.

A plurality of metal hand molds were covered with nylon knitting masters, each was immersed in a calcium nitrate solution, then immersed in the above compound 4 compound, heat set at 75 ° C. for 10 minutes, and then prepared. It was immersed in a foaming compound of Formulation 5 or Formulation 6, heat set at 75 ° C. for 10 minutes, and cured at 130 ° C. for 40 minutes to produce two types of gloves having a liquid-impermeable film and a foamed film.
(Example 6)
In the same manner as in Example 2, a foaming compound having an air content of 30% was prepared using the compound of Formula 2 and a film was formed on the nylon knitting raw material by the foaming compound of Formula 2 to provide a foamed film. Gloves were made.

  Further, in the same manner as in Example 3, a foaming compound having an air content of 30% was prepared using the compound of Formulation 2, and a film was formed on the nylon knitting raw hand by the compound of Formulation 4 and the foaming compound of Formulation 2. A glove with a liquid impermeable coating and a foam coating was formed.

However, each glove was attached to an uneven surface using an uneven plate between a heat set at 75 ° C. for 10 minutes and a cure at 130 ° C. for 40 minutes to form a foamed film (see FIG. 2). The concavo-convex plate is a 2 mm × 3 mm rectangle with a depth of 0.5 mm formed at a density of 10 pieces / cm ² , and the palm of the semi-gelled foam compound is hot pressed from the surface side (1 kgf / cm ² , 200 ° C., 5 seconds).
(Comparative Example 1)
Example 1 except that the compound shown in the following formulation 7 was used and the ratio (A / B) of NBR to acrylic acid copolymer was 100/0, 98/2, and 40/60. In the same manner, three types of gloves were produced.

（比較例２）
以下の配合８のコンパウンドを用いること以外は実施例２と同様にして、発泡皮膜を備えた３種類の手袋を作製した。

(Comparative Example 2)
Three types of gloves equipped with a foamed film were prepared in the same manner as in Example 2 except that the following compound 8 was used.

（比較例３）
上記の配合４のコンパウンドに次いで配合８のコンパウンドを用いること以外は実施例３と同様にして、液体不透過性皮膜と発泡皮膜とを備えた手袋を作製した。
（比較例４）
以下の配合９および配合１０のコンパウンドをそれぞれ用いること以外は実施例４と同様にして、発泡皮膜を備えた２種類の手袋を作製した。

(Comparative Example 3)
A glove provided with a liquid-impermeable film and a foamed film was prepared in the same manner as in Example 3 except that the compound of the composition 8 was used next to the compound of the composition 4 described above.
(Comparative Example 4)
Two types of gloves provided with a foamed film were prepared in the same manner as in Example 4 except that the following compounds of Formulation 9 and Formulation 10 were used.

（比較例５）
上記の配合４のコンパウンドに次いで配合９または配合１０のコンパウンドを用いること以外は実施例５と同様にして、液体不透過性皮膜と発泡皮膜とを備えた２種類の手袋を作製した。
（比較例６）
上記の配合８の発泡コンパウンドを配合２のコンパウンドに代えて用いること以外は実施例６と同様にして、発泡皮膜を備えた手袋と、液体不透過性皮膜と発泡皮膜とを備えた手袋とを、発泡皮膜の表面に凹凸を付型して作製した。

(Comparative Example 5)
Two types of gloves having a liquid-impermeable film and a foamed film were prepared in the same manner as in Example 5 except that the compound of Formula 9 or 10 was used after the compound of Formula 4 above.
(Comparative Example 6)
A glove provided with a foamed film and a glove provided with a liquid-impermeable film and a foamed film are the same as in Example 6 except that the foamed compound of the above composition 8 is used instead of the compound of the composition 2. The surface of the foamed film was made with irregularities.

The physical properties of the gloves prepared in Examples 1 to 6 and Comparative Examples 1 to 6 were evaluated as follows.
・ Evaluation of wear resistance
The measurement was performed according to EN388 using a Nu-Martindale measuring machine. For gloves in which the hands were covered with a foam film, the number of times until the hands were visible, and for gloves in which the hands were covered with a liquid-impermeable film and a foam film, the number of times until the foam film disappeared was examined. The higher the number of times, the stronger the wear resistance. There is no effect from the type of abrasive.
・ Evaluation of grip property Each glove was worn, and a metal bar to which toluene was attached was actually gripped to confirm the degree of sliding.

◎ No slipping ○ No slipping △ Slight slipping × Slipping / solvent resistance evaluation Cut out test pieces from each glove, measure each tensile strength (normal strength), then soak in toluene for 1 minute, lightly wipe the surface Thereafter, the tensile strength (residual tensile strength) was measured. The higher the ratio of the residual tensile strength to the normal strength, the stronger the solvent resistance. For gloves with foam coating (original hand + liquid impervious coating + foam coating), soak your thumb and forefinger in toluene and rub them at regular intervals. It was strong.
・ Bending evaluation
KES-FB2 bending tester (manufactured by Kato Tech Co., Ltd.) Mode: B value [gf · cm ² / cm] was determined in 3 cycles. B value is an index of bending hardness, meaning that the smaller the value, the softer. Normally, B values exceed 2.5 for support gloves (with a fibrous base material), and B values exceed 1.5 for unsupported gloves (without a fibrous base material). And the hardness is difficult to work.

  The test results of the gloves of Example 1 and Comparative Example 1 are shown in Table 11 below. Example 1 is an unsupported glove produced by blending an acrylic acid copolymer with NBR latex, and Comparative Example 1 is an unsupported glove not blended with the copolymer. In Table 11, the glove of Example 1 has improved normal strength compared to the glove of Comparative Example 1, there is little decrease in tensile strength after immersion in the solvent, and the solvent resistance (residual tensile strength / normal strength) is also 134 to 276. %, And it is sufficiently flexible even in a bending test. Gloves with an A / B of 98/2 are flexible in the bending test, but the solvent resistance is improved by 5% and the effect is small. A glove having an A / B of 40/60 is hard in a bending test and is very difficult to release.

実施例２、比較例２の手袋の試験結果を以下の表１２に示す。実施例２、比較例２はともに、滑り止めを目的として、機械的に気泡を含有させた発泡皮膜を備えたサポート（繊維製基材がついている）手袋である。実施例２は、アクリル酸系共重合体をブレンドしているが、比較例２は前記共重合体をブレンドしていない。表１２において、実施例２の手袋は比較例２の手袋に比べて、耐摩耗性が２８０〜４３３％向上している。滑り止め効果は同等である。曲げ試験については、実施例２の手袋の方がやや硬いが、硬いと感じるＢ値２．５に比べると小さい値であり、柔軟であると言える。

The test results of the gloves of Example 2 and Comparative Example 2 are shown in Table 12 below. Both Example 2 and Comparative Example 2 are support gloves (with a fiber base material) provided with a foam coating that mechanically contains bubbles for the purpose of preventing slipping. Example 2 blends an acrylic acid copolymer, but Comparative Example 2 does not blend the copolymer. In Table 12, the wear resistance of the glove of Example 2 is improved by 280-433% as compared with the glove of Comparative Example 2. Anti-slip effect is equivalent. Regarding the bending test, the glove of Example 2 is slightly harder, but has a smaller value than the B value of 2.5, which is felt to be hard, and can be said to be flexible.

実施例３、比較例３の手袋の試験結果を以下の表１３に示す。実施例３、比較例３はともに、繊維性基材上に液体不透過性皮膜を形成し、その上に機械的に気泡を含有させた発泡皮膜を形成した手袋であり、実施例３の発泡皮膜には、アクリル酸系共重合体をブレンドしているが、比較例３の発泡皮膜には前記共重合体をブレンドしていない。

The test results of the gloves of Example 3 and Comparative Example 3 are shown in Table 13 below. Both Example 3 and Comparative Example 3 are gloves in which a liquid-impermeable film is formed on a fibrous base material, and a foamed film in which bubbles are mechanically contained is formed thereon. The film is blended with an acrylic acid copolymer, but the copolymer is not blended with the foamed film of Comparative Example 3.

  In Table 13, the glove of Example 3 has improved solvent resistance by 4 to 180 times compared to the glove of Comparative Example 3, and the anti-slip effect against the solvent is also improved. Abrasion resistance is also improved 3 to 4 times. Regarding the flexibility, although the glove of Example 3 is slightly harder, it has a smaller value than the B value of 2.5, which is felt to be hard, and can be said to be flexible. Moreover, although it is harder than Example 2 without a liquid-impermeable layer, there is no difficulty in workability. Abrasion resistance is improved 3 to 4 times.

実施例４、比較例４の手袋の試験結果を以下の表１４に示す。実施例４（ａ）、比較例４（ａ）は化学発泡剤を添加して発泡皮膜を形成した手袋、実施例４（ｂ）、比較例４（ｂ）はマイクロカプセルを添加して発泡皮膜を形成した手袋であり、実施例４（ａ）（ｂ）の発泡皮膜には、アクリル酸系共重合体をブレンドしているが、比較例４（ａ）（ｂ）の発泡皮膜には前記共重合体をブレンドしていない。

The test results of the gloves of Example 4 and Comparative Example 4 are shown in Table 14 below. Example 4 (a) and Comparative Example 4 (a) are gloves in which a chemical foaming agent is added to form a foamed film, Example 4 (b) and Comparative Example 4 (b) are foamed films with the addition of microcapsules. The foamed film of Example 4 (a) (b) is blended with an acrylic acid copolymer, but the foamed film of Comparative Example 4 (a) (b) The copolymer is not blended.

  In Table 14, the wear resistance of the glove of Example 4 is improved about twice or more compared to the glove of Comparative Example 4. Regarding the flexibility, although the glove of Example 4 is slightly harder, the value is sufficiently smaller than the B value of 2.5 that is felt to be hard, and it can be said that it is flexible.

実施例５、比較例５の手袋の試験結果を以下の表１５に示す。実施例５（ａ）、比較例５（ａ）は、繊維性基材上に液体不透過性皮膜を形成し、その上に化学発泡剤を添加して発泡層を設けた手袋、実施例５（ｂ）、比較例５（ｂ）は、繊維性基材上に液体不透過性皮膜を形成し、その上にマイクロカプセルを添加して発泡層を設けた手袋であり、実施例５（ａ）（ｂ）の発泡皮膜には、アクリル酸系共重合体をブレンドしているが、比較例５（ａ）（ｂ）の発泡皮膜には前記共重合体をブレンドしていない。

The test results of the gloves of Example 5 and Comparative Example 5 are shown in Table 15 below. Example 5 (a) and Comparative Example 5 (a) are gloves in which a liquid-impermeable film is formed on a fibrous base material and a foaming layer is provided by adding a chemical foaming agent thereon, Example 5 (B), Comparative Example 5 (b) is a glove in which a liquid-impermeable film is formed on a fibrous base material, and a microcapsule is added thereon to provide a foamed layer. Example 5 (a ) The foamed film of (b) is blended with an acrylic acid copolymer, but the copolymer is not blended with the foamed film of Comparative Example 5 (a) and (b).

  In Table 15, the gloves of Example 5 (a) have 243% improvement in wear resistance and six times the solvent resistance compared to the gloves of Comparative Example 5 (a). The anti-slip effect on the solvent is also improved. The glove of Example 5 (b) has 267% higher wear resistance and six times the solvent resistance than the glove of Comparative Example 5 (b). The anti-slip effect is also improved. Regarding the flexibility, although the gloves of Examples 5 (a) and 5 (b) are slightly harder, they are smaller than the B value of 2.5 that is felt to be hard, and are not substantially different.

実施例６、比較例６の手袋の試験結果を以下の表１６に示す。実施例６（ａ）、比較例６（ａ）は、繊維性基材上に機械的に気泡を含有させた発泡皮膜を形成した手袋、実施例６（ｂ）、比較例６（ｂ）は、繊維性基材上に液体不透過性皮膜を形成し、その上に機械的に気泡を含有させた発泡皮膜を形成した手袋であり、全て、発泡皮膜を凹凸状に成型している。実施例６（ａ）（ｂ）の発泡皮膜には、アクリル酸系共重合体をブレンドしているが、比較例６（ａ）（ｂ）の発泡皮膜には前記共重合体をブレンドしていない。

The test results of the gloves of Example 6 and Comparative Example 6 are shown in Table 16 below. Example 6 (a) and Comparative Example 6 (a) are gloves in which a foamed film in which bubbles are mechanically contained on a fibrous base material is formed, Example 6 (b) and Comparative Example 6 (b) These are gloves in which a liquid-impermeable film is formed on a fibrous base material, and a foamed film in which bubbles are mechanically contained is formed on the fibrous base material. The foamed film of Example 6 (a) (b) is blended with an acrylic acid copolymer, but the copolymer is blended with the foamed film of Comparative Example 6 (a) (b). Absent.

  In Table 16, the gloves of Examples 6 (a) and (b) have a wear resistance of 166 to 193% and solvent resistance of 8 times that of the gloves of Comparative Examples 6 (a) and (b). . The anti-slip effect is also improved. Regarding the flexibility, the gloves of Examples 5 (a) and 5 (b) are slightly harder, but have a smaller value than the B value of 2.5, which is felt to be hard, and are substantially the same.

  The work gloves of the present invention are excellent in oil resistance and solvent resistance, and have flexibility, grip properties, and film strength, and thus are useful for a wide range of work such as painting work.

The external view and sectional drawing of the glove of one embodiment of the present invention The external view and sectional drawing of the glove of other embodiments of the present invention

Explanation of symbols

1 Hand 2 Foamed film 3 Pressed point 4 Bubble (scratches)

Claims (3)

  Work gloves formed by blending NBR latex with a copolymer of acrylonitrile, (meth) acrylic acid, and alkyl acrylate, and using NBR compound with a total acrylonitrile content of 36 mass% to 53 mass% as a material. .   The work glove according to claim 1, wherein at least a surface layer portion of the film is a foam layer.   The work glove according to claim 2, wherein the surface of the foam layer is uneven.

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