JP2005320652A - Glove - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide gloves improved in wear resistance strength through stabilizing foam stability when dry-forming an air bubble-containing compound, and miniaturizing the particle diameter of the air bubble contained in a foamed layer. <P>SOLUTION: The glove is obtained by adding 15-50 pts.wt. of 2,2,4-trimethyl-1,3-pentanediol monoisobutyrate based on 100 pts.wt. of thermoplastic resin latex; mechanically adding air bubbles in the mixture; and subjecting the mixture to hot forming. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a glove used in a field where gripping properties are required in an operation in which a hand handling water or oil is slippery.

Conventionally, as disclosed in Patent Document 1, a processing method of a foam layer in a glove includes a thermoplastic resin latex, a vulcanizing agent or a crosslinking agent such as sulfur and zinc oxide, a vulcanization accelerator, an anti-aging agent, and a pigment. Add a thickener, add a foam stabilizer and foaming agent, and mechanically add bubbles to the thermoplastic resin layer or fibrous knitted gloves. The method of heat forming is employed. Gloves used in applications that require gripping force, especially when handling water and oil, are covered with a foam layer on the surface of the glove, and numerous fine holes are opened on the surface of the foam layer. In this way, water and oil intervening between the surface of the glove and the object are eliminated, and an anti-slip effect is produced.
JP 59-95135 A

  However, since the compound containing bubbles is poor in bubble stability at the time of dry molding, it is difficult to form a film because cracks and cracks are likely to occur. Further, if the bubble content in the thermoplastic resin latex is increased, the anti-slip effect can be improved, but the wear resistance is reduced. Therefore, a technique has been desired that has a structure in which many fine bubble holes are opened on the surface of the foam layer and that makes the average diameter of the bubbles as fine as possible to improve the wear resistance.

  The object of the present invention is to solve such problems, to further stabilize the foam stability at the time of dry molding of the foam-containing compound, and to make the foam particle size contained in the foam layer finer and more resistant. It is to provide a glove with increased wear strength.

  In the glove according to claim 1 of the present invention, thermoplastic resin latex: 15 to 50 parts by weight of 2,2,4-trimethyl-1,3-pentanediol monoisobutyrate is added to 100 parts by weight. It is characterized in that it is formed by heat-molding a material containing bubbles mechanically.

  The glove according to claim 2 is an average particle diameter of 15 to 50 parts by weight of 2,2,4-trimethyl-1,3-pentanediol monoisobutyrate with respect to 100 parts by weight of thermoplastic resin latex. : 2 to 80 parts by weight of an organic substance having a particle size of 200 to 800 μm added thereto, and mechanically containing bubbles are thermoformed.

The thermoplastic resin latex used in the present invention includes natural rubber, isoprene, chloroprene, acrylate rubber, styrene-butadiene copolymer, acrylonitrile-butadiene copolymer, polyurethane rubber, butyl rubber, polybutadiene rubber, ethylene- Homopolymer latex such as vinyl acetate copolymer, ethylene-propylene rubber, silicone rubber, chlorosulfonated polyethylene or copolymer latex, and copolymer latex having 10% by weight or less of carboxyl-modified groups. Two or more types are blended. The term natural rubber includes not only natural rubber alone but also natural rubber-methyl methacrylate copolymer, epoxidized modified natural rubber copolymer (latex), and the like. The term acrylate rubber 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. Or a copolymer containing acrylonitrile, methyl methacrylate, allyl methacrylate, N-methylolacrylamide, acrylic acid, methacrylic acid, or the like. A well-known crosslinking agent, vulcanization accelerator, anti-aging agent, thickener and the like are added to these, and a foaming agent and a foam stabilizer are added up to about 10% by weight with respect to 100 parts by weight of the thermoplastic resin latex. be able to. As foaming agents, alkyltrimethylammonium chloride, dilauryldimethylammonium chloride, alkylsulfate sodium, alkyl ether sulfate sodium, dialkylsulfosuccinate sodium, sulfosuccinic acid N-alkylmonoamide disodium, oleic acid potassium, castor oil potassium, dodecylbenzenesulfone Sodium acid can be used. N-lauroylamidopropyldimethylbetaine, alkylamidopropyldimethylamine oxide, sodium polyacrylate, methacrylic graft water-soluble polymer, ammonium stearate, peptide, sodium alkyldipropionate, mica, etc. are used as foam stabilizers it can. Alkyl means lauryl, octyl, stearyl. Add chemical foaming agents and microcapsules such as p-toluenesulfonyl hydrazide, pp '· oxybis (benzosulfonylhydrazide), dinitrosopentamethylenetetramine, azodicarbonamide, azobisisobutyronitrile, sodium bicarbonate, etc. Also good. In particular, p-toluenesulfonyl hydrazide is preferable as a foaming agent for thermoplastic resin latex. This compound is mechanically foamed to contain a certain amount of bubbles on a thermoplastic resin film or synthetic, coated on a natural fiber knitted glove by a coagulation method, a heat-sensitive method, at 50 ° C. under no wind, 30 minutes and wind speed 2-5 m / sec. When heated and molded at 130 ° C. for 40 minutes, the inner surface of the foamed layer contains a large number of air bubbles having an average diameter of 100 μm to 200 μm and 80 to 95 air bubbles opened on the surface per 1 cm ² . However, when it is dried, it is molded so that the bubbles are not broken under no wind, but the film formation is poor due to cracks. To this compound, 2,2,4-trimethyl-1,3-pentanediol monoisobutyrate is added to 15 parts by weight to 50 parts by weight with respect to 100 parts by weight of the thermoplastic resin latex, and the bubbles are mechanically made into a volume. On the other hand, 100% foaming was conducted at a wind speed of 2-5 m / sec. When heated and molded at 130 ° C. for 40 minutes, a foam layer having 80 to 95 bubbles / cm ² with an average bubble diameter of 80 μm to 100 μm and open bubbles on the surface can be formed. However, the number is proportional to the bubble content. Even when drying under high temperature conditions with high wind speed, cracks did not occur and the film-forming property was improved. However, when the amount is up to 15 parts by weight or exceeds 50 parts by weight, the film formability is poor, and when it exceeds 50 parts by weight, bleeding occurs. However, the abrasion resistance of the foam layer is almost the same as that before the addition of 2,2,4-trimethyl 1,3-pentanediol monoisobutyrate. Further, in order to make the contained bubble diameter fine, 2 to 80 parts by weight of an organic substance having an average particle diameter of 200 μm to 800 μm was added and mechanically foamed to obtain a wind speed of 2 to 5 m / sec. When heated and molded at 130 ° C. for 40 minutes, it has 90 to 130 fine holes per cm ² on the inner surface and surface of the foam layer, and the average bubble diameter is extremely reduced to 30 μm to 70 μm. The organic substances are acrylic acid ester rubber, polyurethane, natural rubber powder, EVA powder, wax, PVC, NBR, SBR, chloroprene rubber, butadiene rubber and the like as described above. Hydroxyl group, carboxyl group, silica, hydroxylated on the particle surface Those coated with aluminum can be used. When the average particle size is up to 200 μm and the number of added parts is up to 2 parts by weight, the wear resistance effect is somewhat small. On the other hand, if it is larger than 800 μm, the particles are liable to settle and the film formability is poor. If it exceeds 80 parts by weight, the compound will gel.

  As described above, the glove according to the present invention can improve the foam stability during drying by adding 2,2,4-trimethyl 1,3-pentanediol monoisobutyrate to the thermoplastic resin latex. It was. Further, even if the amount of bubbles contained is increased by adding organic particles, a foam layer having high wear resistance can be obtained, and the gripping property can be improved in an operation where a hand handling water or oil is slippery.

Hereinafter, embodiments of the present invention will be specifically described. However, the embodiments described below do not limit the present invention.

Embodiment 1

  20 parts by weight of 2,2,4-trimethyl 1,3-pentanediol monoisobutyrate (CS-12 manufactured by Chisso Corporation) was added to Lx550: 100 parts by weight of Formula 1 shown in Table 1, and NBR Prepare a compound by adding 2, 20, and 80 parts by weight of particles (NB # 20-B, manufactured by Toa Kasei Co., Ltd.) and adjusting the average particle size to 300, 500, and 700 μm. The amount of air bubbles contained was adjusted to 10%, 30%, and 100% using a home automatic hand mixer. Nylon knitting master is put on a dipping mold, dipped in a calcium nitrate coagulant solution, dipped in a prepared compound, dried at 70 ° C. for 1 hour, released, and then leaching: dried at 30 ° C. for 40 minutes. And then cured at 130 ° C. for 1 hour. A test piece was cut from the palm of the glove and evaluated for wear resistance according to EN388. Also, the anti-slip effect was confirmed by wearing a glove and actually holding a metal rod with a certain amount of cutting oil (Miyagawa 246). The evaluation results are shown in Table 2.

Embodiment 2

  20, 40, 50 parts by weight of 2,2,4-trimethyl 1,3-pentanediol monoisobutyrate (CS-12 manufactured by Chisso Corp.) with respect to 100 parts by weight of Lx550 of Formulation 1 shown in Table 1 A compound to which each of the added substances was added was prepared, and the amount of bubbles contained was adjusted to 10%, 30%, and 100% with a home automatic hand mixer. The glove prototype method and measurement were performed in the same manner as in the first embodiment.

Embodiment 3

  20 parts by weight of 2,2,4-trimethyl 1,3-pentanediol monoisobutyrate (CS-12 manufactured by Chisso Corporation) was added to Lx550: 100 parts by weight of Formulation 1 shown in Table 1 and averaged. Particle diameter: 700 μm polyurethane particles (Resamine P-1045, manufactured by Dainichi Seika Co., Ltd., polyester-based TPU) passed through a mesh to adjust the average particle diameter to 200, 400, 600 μm 2, 20, 80 parts by weight Each added compound was prepared, divided into small portions, and the amount of contained bubbles was adjusted to 10%, 30%, and 100% with a home automatic hand mixer. The glove prototype method and measurement were performed in the same manner as in the first embodiment.

Comparative Example 1

  10 parts by weight of 2,2,4-trimethyl 1,3-pentanediol monoisobutyrate (CS-12 manufactured by Chisso Corporation) is added to 100 parts by weight of Lx550 of Formulation 1 shown in Table 1, and NBR Particles (Toa Kasei Co., Ltd. NB # 20-B) passed through a mesh and the average particle size adjusted to 900 μm, or average particle size: 120 μm NBR particles (BAYMOD NXL38.20 manufactured by Bayer Co.), or PMMA particles having an average particle size of 100 μm (GM-100 manufactured by Ganz Kasei Co., Ltd.), or PMMA particles having an average particle size of 1000 μm (GM-1000 manufactured by Ganz Kasei Co., Ltd.), or silica having an average particle size of 14 μm ( Tokuyama Soda Co., Ltd. Toxeal U), or mica with an average particle size of 50 μm (Shiraishi Calcium Co., Ltd. Mica C) 3000) providing the added compound respectively 2,20,80 parts, aliquots of 10% the content amount of bubbles using a household automatic hand mixer, 30%, was adjusted to 100%. The glove prototype method and measurement were performed in the same manner as in the first embodiment.

Comparative Example 2

  10 parts by weight of 2,2,4-trimethyl 1,3-pentanediol monoisobutyrate (CS-12 manufactured by Chisso Corporation) is added to 100 parts by weight of Lx550 of Formulation 1 shown in Table 1, and NBR Prepare a compound to which 0.5 (1, 90, 100 parts by weight) of particles (NB # 20-B manufactured by Toa Kasei Co., Ltd.) were added, and subdivided into 10% of the amount of bubbles contained in an automatic home mixer for home use. , 30% and 100%. The glove prototype method and measurement were performed in the same manner as in the first embodiment.

Comparative Example 3

  10, 14, 51, 60 of 2,2,4-trimethyl 1,3-pentanediol monoisobutyrate (CS-12 manufactured by Chisso Corp.) with respect to 100 parts by weight of Lx550 of Formulation 1 shown in Table 1. The compound which added the weight part was prepared, 20 weight of NBR particle | grains (Toa Kasei Co., Ltd. NB # 20-B) was added to each, and the amount of air bubbles contained was 10%, 30%, 100 with the home automatic hand mixer. % Adjusted. The glove prototype method and measurement were performed in the same manner as in the first embodiment.

Comparative Example 4

  The amount of bubbles contained in Formulation 1 shown in Table 1 was adjusted to 10%, 30%, and 100% with a household automatic hand mixer. The glove prototype method and measurement were performed in the same manner as in the first embodiment.

Comparative Example 5

  Lx550 of Formulation 1 shown in Table 1: NBR particles (NB # 20-B manufactured by Toa Kasei Co., Ltd.) are added in an amount of 2, 20, and 80 weights per 100 parts by weight, and the amount of bubbles contained in an automatic home mixer for home use Was adjusted to 10%, 30%, and 100%. The glove prototype method and measurement were performed in the same manner as in the first embodiment.

表２および表３からも分かるように比較例４、比較例５は従来の配合でわずかな風速、高温度下での乾燥で発泡層にクラックが入る。しかしながら実施の形態２のように２，２，４−トリメチル１，３−ペンタンジオールモノイソブチレートを添加することによってクラックが改良される。また、耐摩耗性、グリップ力は、添加する前とほぼ同等である。実施の形態１、実施の形態３のように２，２，４−トリメチル１，３−ペンタンジオールモノイソブチレートを１５〜５０重量部と平均粒子径：２００〜８００μｍの有機物を２〜８０重量部添加すると気泡含有量を多くしても耐摩耗性が非常に強い。比較例１、比較例２、比較例３のように、この範囲が外れたところでは気泡含有量と共に耐摩耗性が弱くなる。 Table 2 and Table 2 show the test results of the gloves obtained from Embodiment 1, Embodiment 2, Embodiment 3, and Comparative Example 1, Comparative Example 2, Comparative Example 3, Comparative Example 4, and Comparative Example 5. It was shown in 3. In addition, each evaluation test method is shown below.
-Evaluation of film formability Wind speed: 2 to 5 m / sec. At 130 ° C. for 40 minutes, it was confirmed whether or not the foamed layer was cracked or cracked during heat molding.
×: There is a crack. Δ: There is a slight crack. However, there is no influence by the type of abrasive. The thickness of the foam layer was adjusted to be the same.
-Measuring method of abrasion resistance It carried out based on EN388 using Nu-Martindale measuring machine. However, the number of times until the foamed layer was worn and the fibrous hand was visible was measured.
-Evaluation of grip performance The effect was confirmed by wearing a prototype glove and actually holding a metal bar with a certain amount of cutting oil (Miyagawa 246).
×: Slip △: Slightly slide ○: Does not slip ◎: Does not slip at all

As can be seen from Tables 2 and 3, Comparative Example 4 and Comparative Example 5 are cracked in the foamed layer by drying at a low wind speed and high temperature with the conventional formulation. However, the cracks are improved by adding 2,2,4-trimethyl 1,3-pentanediol monoisobutyrate as in the second embodiment. In addition, the wear resistance and grip strength are almost the same as before addition. As in Embodiments 1 and 3, 15 to 50 parts by weight of 2,2,4-trimethyl 1,3-pentanediol monoisobutyrate and 2 to 80 parts by weight of an organic substance having an average particle size of 200 to 800 μm When part is added, the wear resistance is very strong even if the bubble content is increased. As in Comparative Example 1, Comparative Example 2, and Comparative Example 3, the wear resistance is weakened along with the bubble content when the range is out of this range.

Claims (2)

Thermoplastic resin latex: 15 to 50 parts by weight of 2,2,4-trimethyl-1,3-pentanediol monoisobutyrate is added to 100 parts by weight (solid content) to mechanically contain bubbles. A glove characterized by heat-molding a bowl. Thermoplastic resin latex: 15 parts by weight to 50 parts by weight of 2,2,4-trimethyl-1,3-pentanediol monoisobutyrate with respect to 100 parts by weight (solid content) and average particle size: 200 μm to 800 μm A glove obtained by thermoforming a material containing 2 to 80 parts by weight of an organic substance and mechanically containing bubbles.