JP2007063688A - Inner-surface-flocked glove and method for producing the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an inner-surface-flocked glove comprising a kitchen or laundry glove for home use or a glove for other use, having good wearing feeling, excellent in flexibility and also easy to put on or off. <P>SOLUTION: The inner-surface-flocked glove is obtained through the following process: making extremely fine fibers with <0.10 dtex adhere to the inner surface of a glove made of rubber, synthetic resin or the like so as to improve flyability of the fiber to enable flocking of the fibers on the base body surface without making them get flat, have extremely favorable wearing feeling, excellent in flexibility and easy to put on or off; and making the extremely short fibers each have a length of 0.05-0.4 mm to facilitate flocking of the short fibers on the base body surface perpendicularly or almost perpendicularly so as to improve wearing feeling and flexibility of the glove. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a glove suitable for cooking, washing, and other operations, and more particularly, to a glove that has been flocked on the inner surface of a substrate and a method for manufacturing the glove.

  Rubber gloves such as natural rubber (NR) and acrylonitrile-butadiene rubber (NBR) and soft vinyl chloride resin (PVC) gloves are widely used as household gloves for cooking, washing, etc. or as other work gloves. It has been. Many of these gloves are subjected to flocking treatment with short fibers on the inner surface in order to improve detachability, texture, and heat retention during water work (for example, Patent Document 1, Patent Document 2, And Patent Document 3).

  However, in these gloves, when short fibers are attached to the inner surface of the substrate through an adhesive layer by electrostatic flocking, the short fibers often lie on the surface of the substrate, particularly at the finger or the like. In such a case, there is a problem that the flocking density decreases or the short fibers are buried in the adhesive layer, resulting in poor comfort and touch. Furthermore, there was room for improvement in the flexibility of the short fibers planted on the inner surface.

Japanese Patent Laid-Open No. 5-305589 JP 2004-27449 A JP 2004-162249 A

  In view of the above situation, the present invention intends to solve the problem by implanting short fibers perpendicularly to or at an angle close to the base surface, thereby providing good comfort and high glove flexibility. The object is to provide gloves that are easy to wear off.

  As a result of intensive studies to solve the above problems, the present inventors have found that by attaching ultrafine short fibers to the inner surface of the glove base, it is possible to perform flocking processing in which the short fibers do not sleep, The present invention has been completed.

  That is, the present invention relates to an inner surface flocked glove characterized by coating ultrafine short fibers of less than 0.10 dtex on the inner surface of a rubber or synthetic resin glove base.

  Moreover, it is preferable that the length of the said ultrafine short fiber is 0.05 mm-0.4 mm.

  Further, in the present invention, a rubber or a resin liquid is attached to the surface of the hand mold, and an adhesive is further attached to a glove base obtained by semi-gelling or solidifying the rubber or resin liquid, and the above-mentioned ultrafine short fibers are deposited thereon. Then, it is related with the manufacturing method of the said inner surface flocking glove characterized by carrying out reverse mold release from the said hand type | mold.

  Moreover, it is preferable to adhere the ultrafine short fibers by electrostatic flocking.

  The inner surface flocking glove of the present invention improves the flying property of the fiber by attaching ultrafine fibers of less than 0.10 dtex to the inner surface of the glove formed of rubber or synthetic resin, and the fibers are in contact with the substrate surface. Therefore, it is possible to plant the hair without going to sleep, the comfort is very good, the flexibility of the glove is high, and it is easy to attach and detach. Further, by making the length of the ultrafine fibers as very short as 0.05 mm to 0.4 mm, it becomes easy to plant the short fibers at an angle close to or perpendicular to the base surface, and comfort and The flexibility of the gloves will be better. Furthermore, the glove manufacturing method of the present invention makes it possible to produce a glove in which ultra-short fibers stand in the vertical direction without lying on the inner surface of the glove base.

  Hereinafter, embodiments of the present invention will be described in detail.

  As described above, the inner surface flocked glove of the present invention is characterized in that ultrafine short fibers of less than 0.10 dtex are adhered to the inner surface of the glove base.

  The glove base is manufactured using rubber or synthetic resin, and more specifically, after dipping a hand mold of a known material such as ceramic or metal in a resin liquid such as latex or a synthetic resin dispersion. The resin liquid adhered to the hand mold is fixed.

  Examples of the latex used as the resin liquid include natural rubber (NR), acrylonitrile-butadiene rubber (NBR), chloroprene rubber (CR), styrene-butadiene rubber (SBR), isoprene rubber (IR), polyurethane (PU ) And other synthetic rubbers. These rubbers can be used as they are as resin liquids that are raw materials for glove bases. Good.

  Examples of the synthetic resin dispersion used as the resin liquid include a dispersion liquid in which a synthetic resin such as vinyl chloride (PVC) or acrylic is dispersed in a plasticizer or a solvent.

  The ultra-fine short fibers are short fibers having a fineness of less than 0.10 dtex, preferably 0.005 dtex or more and less than 0.10 dtex, more preferably 0.02 dtex or more and 0.095 dtex or less. When the fiber has a fineness of less than 0.10 dtex, the jumping property of the short fiber is improved, and the short fiber can be planted without sleeping on the surface of the substrate, the comfort is extremely good, and the flexibility of the glove And is easy to attach and detach. On the other hand, when the fiber has a fineness of 0.10 dtex or more, the comfort tends to be slightly worse. Moreover, the production of fibers having a fineness of 0.005 dtex or less tends to be difficult.

  The length of the ultrafine short fiber is preferably 0.05 mm to 0.4 mm, more preferably 0.10 to 0.3 mm. When the ultrafine short fiber is longer than 0.4 mm, the fiber tends to sleep on the glove base, and the touch and the comfort tend to be deteriorated. In addition, it is difficult to produce a fiber having an ultrafine short fiber shorter than 0.05 mm.

  The material of the ultrafine short fibers is not particularly limited, and any of natural fibers, synthetic fibers, and chemical fibers may be used. For example, natural fibers such as cotton, wool, and silk, and chemicals such as rayon, cupra, and acetate are used. Examples thereof include fibers and synthetic fibers such as polyethylene, polypropylene, polyester, and nylon. Among these, it is preferable to use chemical fibers or synthetic fibers because the fibers are not curled and easy to shorten.

  Various types of adhesives can be used for attaching the ultrafine short fibers to the inner surface of the glove base, but it is preferable to use a material similar to the glove base or a material having a similar polarity value. The adhesive may be the same component as the substrate. That is, it is possible to attach the ultrafine short fibers directly to the glove base material, and it is not necessary to use an adhesive having a component different from that of the substrate. An adhesive layer is formed by adhering such an adhesive to the inner surface of the glove base by a method described later. The average thickness of the adhesive layer is preferably 0.005 to 0.05 mm, more preferably 0.01 to 0.04 mm, and still more preferably 0.02 to 0.04 mm. Here, the “average thickness” means the average value of the thickness of the adhesive layer in the substantially flat part of the inner surface of the glove, for example, the thickness in a special part having a complicated shape such as a finger or a part. Is excluded. When the average thickness of the adhesive layer is 0.05 mm or more, the liquid surface around the fiber rises along the fiber due to surface tension due to capillary action, and the fiber is easily buried in the adhesive layer. In the present invention, the reason why the thickness of the adhesive layer can be reduced to 0.005 to 0.05 mm is that the fibers to be deposited are extremely fine and light, and the ordinary fibers having a fineness of 0.10 dtex or more are used. This is because the fibers can be supported even when the adhesive layer thickness is smaller than in the case of depositing.

  Next, the manufacturing method of the inner surface flocking glove of this invention is demonstrated in detail.

  As described above, the method for producing an internally flocked glove according to the present invention has a rubber or resin liquid attached to the surface of the hand mold, and an adhesive is further attached to the glove base obtained by semi-gelling or solidifying the rubber or resin liquid. After the ultrafine short fibers are attached to the mold, the mold is reversed and released from the hand mold.

  As a method for attaching the rubber or the resin liquid to the surface of the hand mold, a known technique can be adopted, and it is not particularly limited, but a technique of immersing the hand mold in the resin liquid is preferable. The time for immersing the hand mold in the resin liquid is preferably about 10 to 180 seconds.

  Next, the rubber or resin liquid adhering to the hand mold is semi-gelled or solidified by heat treatment or the like. In this state, an adhesive is attached, and ultrafine short fibers are deposited thereon. However, a resin solution such as a latex or a synthetic resin dispersion that constitutes the glove base is used as an adhesive and is once resinized. It is also possible to immerse the glove base member formed in this manner again in these solutions to attach the adhesive solution, and to adhere the ultrafine short fibers thereon.

  The adhesive solution preferably has a viscosity of 100 to 950 mPa · s, more preferably 200 to 750 mPa · s, and still more preferably 250 to 550 mPa · s. By using an adhesive solution having such a viscosity, it becomes easy to uniformly adhere the adhesive, and a relatively thin adhesive layer having an average thickness of 0.005 mm to 0.05 mm can be uniformly formed. It will be a thing. On the other hand, when the viscosity is less than 100 mPa · s, the adhesive solution tends to sag and it becomes difficult to uniformly adhere the adhesive, and the adhesive layer tends to be too thin, and the average thickness is 0.005 mm to 0 mm. It becomes difficult to form a 0.05 mm adhesive layer as set. Moreover, when the viscosity exceeds 1000 mPa · s, the amount of adhesive attached increases, the glove becomes hard, the feeling of tingling is apt to cause unevenness in the adhesive layer thickness, and the adhesive layer tends to be thick. It becomes difficult to form an adhesive layer having an average thickness of 0.005 mm to 0.05 mm as set.

  The solid content in the adhesive solution, that is, the solid content concentration is preferably 20 to 40% by weight. If the solid content concentration is less than 20% by weight, the amount of water increases, so that the adhesive tends to sag and cannot be uniformly adhered, and the adhesive layer tends to be too thin. On the other hand, when the solid content concentration exceeds 40% by weight, uniform drying is difficult, aggregates of the solid content are easily generated and handling becomes difficult, and the adhesive layer tends to be too thick.

  When the glove base is rubber, drying and vulcanization conditions vary depending on the type of latex, but it is generally preferable to heat at 100 to 140 ° C for about 20 to 40 minutes after sufficiently drying at 60 to 110 ° C. .

  When the glove base is a synthetic resin such as polyvinyl chloride, the gelling conditions vary depending on the components of the synthetic resin, but it is generally preferable to heat at 150 to 230 ° C. for about 5 to 10 minutes.

  In the present specification, “adhesion” means a state in which the above-mentioned ultrafine short fibers are naturally attached to the inner surface of the glove substrate, that is, the ultrafine short fibers are uniformly or randomly attached to the inner surface of the glove substrate. The state which is doing.

  As a method of attaching ultrafine short fibers to a glove base, a conventionally known method, for example, a method in which ultrafine short fibers are placed in a sieve and dropped while applying vibration to the glove base immersed in an adhesive. Or a blower with a tank filled with ultrafine fibers connected to the suction port of the blower, sucking the ultrafine fibers, and blowing the ultrafine fibers blown from the blower outlet onto the glove substrate with the adhesive immersed Examples include a method of spraying, a method of spraying ultrafine short fibers sucked by a blower on a glove base body on which an adhesive is immersed while escaping the wind with a cyclone, and if necessary, a flocking treatment, for example, It can be applied by a method such as combining with electrostatic flocking using an electrode. In the present invention, it is preferable that the electrostatic flocking treatment is performed in that the short fibers are charged and the flocking is performed at an angle perpendicular to or close to the glove base surface.

  It is desirable that the amount of the ultrafine short fiber be in the range of 0.1 g to 10 g for a pair of gloves (both left and right). When the amount is less than 0.1 g, the flocking density is reduced, and there is a problem in detachability.

  Further, in the inner surface flocking glove of the present invention, it is desirable that all of the short fibers to be applied to the inner surface of the glove base are made of ultrafine short fibers. You may mix and use the short fiber of 10 dtex or more. The mixing ratio of the ultrafine short fibers and the normal short fibers is not particularly limited, but is preferably in the range of 100: 0 to 20:80 by weight ratio. When the ratio of the ultrafine short fibers is less than 20% by weight, the flexibility and comfort of the obtained gloves are not sufficient.

  After the ultrafine short fibers are attached to the glove base and solidified, the inner face flocked glove with the inner face attached with the ultrafine short fibers can be obtained by reversing and releasing the glove base from the glove mold.

  The inner surface flocking glove of the present invention thus obtained is highly flexible, has a good comfort, and is easy to put off.

  EXAMPLES Next, although an Example and a manufacture example are given and this invention is demonstrated in more detail, this invention is not restrict | limited to these Examples at all.

Example 1
Manufacture of vinyl chloride gloves:
A ceramic hand mold was dipped in a vinyl chloride paste having the composition shown in Table 1, and pulled up at such a rate that the sol did not drip, thereby attaching the vinyl chloride sol to the surface of the hand mold. Next, the hand mold to which the sol was attached was heat-treated at 200 to 230 ° C. for 1 to 3 minutes to form a semi-gel state.

  The glove substrate in a semi-gel state is dipped in an acrylic adhesive solution having a viscosity of 400 mPa · s and a solid content concentration of 27% by weight for about 10 seconds, and then pulled up, using a blower while rotating the hand mold, from the blower outlet. An extra fine fiber having a fineness of 0.094 dtex and a length of 0.2 mm (PET 0.2 mm OW, polyester fiber manufactured by Nissen) was applied, and electrostatic flocking was performed by a conventional method. The amount of ultrafine short fibers deposited was 4 g per pair. Then, after heat-treating again at 200-230 ° C. for 5-8 minutes to completely gel the whole, it was cooled and released from the hand mold to obtain a vinyl chloride glove (Product 1 of the present invention). .

Adhesive layer average:
The average thickness of the adhesive layer of the glove thus manufactured (Product 1 of the present invention) was 0.025 mm. In this example, the “average thickness of the adhesive layer” is determined by measuring the thickness of the adhesive layer at each location of 4 cm, 10 cm, and 25 cm from the middle fingertip of the glove to the palm, and calculating the average value of the three points. Calculated.

(Example 2)
Manufacture of NBR gloves:
(A) Preparation of dispersion solution Dispersion was carried out by placing the liquid B adjusted according to the formulation of Table 2 into the liquid A adjusted according to the formulation of Table 2 in a ball mill at a mass ratio of 1: 1 and dispersed for about 24 to 48 hours. John solution was prepared.

(B) Preparation of NBR latex solution The NBR latex, the dispersant, the dispersion prepared in (a) and water were mixed in the proportions shown in Table 4 and sufficiently stirred to prepare an NBR latex solution.

(C) Manufacture of gloves A ceramic hand mold was dipped in an aqueous solution of 35% calcium nitrate and pulled up, and then dipped in the NBR latex liquid prepared in (b) above, and the latex solution was adhered. Next, in order to remove surplus components of calcium nitrate and rubber, extraction is performed with warm water at 30 to 70 ° C. for 5 to 10 minutes, and then in an acrylic adhesive solution having a viscosity of 400 mPa · s and a solid content concentration of 27% by weight. For about 10 seconds. After that, using a blower while rotating the hand mold, a fine fiber of 0.094 dtex and 0.2 mm length (PET 0.2 mm OW, polyester fiber manufactured by Nissen Co.) exiting from the blower outlet is deposited, and Electrostatic flocking was applied by the method. The amount of ultrafine short fibers deposited was 4 g per pair. Then, after drying at 60-110 ° C. for 70 minutes, drying and vulcanization at 100-140 ° C. for 25-35 minutes, cooling, reversing and releasing from the hand mold, the NBR gloves (present product 2) Obtained.

Average thickness of adhesive layer:
The average thickness of the adhesive layer of the glove thus manufactured (Product 2 of the present invention) was 0.026 mm.

(Comparative Example 1)
Manufacture of vinyl chloride gloves:
Instead of ultra-fine short fibers, normal short fibers, that is, short fibers with a fineness of 1.11 dtex and a length of 0.5 mm (D1d * 0.5 mm thick white, rayon fiber manufactured by Kyoto Pile Fiber Industries, Ltd.) and acrylic A vinyl chloride glove (Comparative Product 1) was obtained by the same production method as in Example 1 except that an adhesive solution having a viscosity of 1000 mPa · s and a solid concentration of 27% by weight was used.

Average thickness of adhesive layer:
The average thickness of the adhesive layer of the glove thus manufactured (Comparative Product 1) was 0.057 mm.

(Comparative Example 2)
Manufacture of NBR gloves:
Instead of ultra-fine short fibers, normal short fibers, that is, short fibers with a fineness of 1.11 dtex and a length of 0.5 mm (D1d * 0.5 mm thick white, rayon fiber manufactured by Kyoto Pile Fiber Industries, Ltd.) and acrylic An NBR glove (Comparative product 2) was obtained by the same production method as in Example 2 except that an adhesive solution having a viscosity of 1000 mPa · s and a solid concentration of 27% by weight was used.

Average thickness of adhesive layer:
The average thickness of the adhesive layer of the glove thus manufactured (Comparative Product 2) was 0.055 mm.

Glove rating:
<Measurement of dynamic friction coefficient>
The gloves of the inventive products 1 and 2 and the comparative products 1 and 2 were measured for the friction coefficient by the following method. The results are shown in Table 5.

(Measuring method)
The average friction coefficient was measured with a surface testing machine. Using a contactor in which 20 piano wires with a diameter of 0.5 mm are arranged, the contact surface is pressed against a sample having a width of 10 mm and a length of 20 mm by a weight of 50 gf. Next, the sample was placed on a smooth metal plane, the sample was moved horizontally by 20 mm at a constant speed of 1 mm / sec, and running resistance (average friction coefficient) caused by friction between the sample and the contact was measured.

(sample)
The average friction coefficient was measured using a sample in a dry state (DRY) and a sample in a wet state (WET). The wet sample was prepared by immersing the dry sample in water for 1 minute and then gently wiping the moisture with a cloth.

  From the results shown in Table 5, it was found that the product of the present invention has a smaller coefficient of friction in both the dry state and the wet state than the comparative product that is a conventional inner surface flocking glove. Also, the smaller the coefficient of friction, the lower the resistance and the better the detachability. From the test results in a wet state, it was found that the product of the present invention can maintain good detachability even when the inside of the glove is wet with sweat or the like.

<Cross-section comparison>
1 and 2 show enlarged cross-sectional photographs of the product 1 of the present invention and the comparative product 1. FIG. 1 shows the product 1 of the present invention, and FIG. It was found that the product 1 of the present invention stands on the substrate surface without being slanted as compared with the comparative product 1 which is a conventional inner surface flocking glove.

<Practical test>
The gloves of Invention Products 1 and 2 and Comparative Products 1 and 2 were each worn by 10 monitors, and the flexibility and comfort of the gloves were evaluated according to the following evaluation criteria. The results are shown in Table 6.

(Glove flexibility evaluation)
○: Soft △: Slightly hard ×: Hard

(Evaluation of comfort)
○: Good △: Slightly good ×: Bad

  From the results shown in Table 6, the product of the present invention has an ultra-thin short fiber of less than 0.10 dtex attached to the inner surface of the glove, and the fiber stands up against the substrate surface. Compared to a comparative product which is a glove, the comfort was very good, and the flexibility of the glove was high and it was easy to attach and detach.

Micrograph showing the cross section of the flocked portion of the product 1 of the present invention Micrograph showing the cross section of the flocked part of Comparative Product 1

Claims (4)

  An inner surface flocking glove comprising an inner surface of a glove base made of rubber or synthetic resin and an extra fine short fiber of less than 0.10 dtex adhered thereto.   The inner surface flocking glove according to claim 1 whose length of said ultra-fine short fiber is 0.05 mm-0.4 mm.   A rubber or resin solution is attached to the surface of the hand mold, and an adhesive is further attached to the glove base obtained by semi-gelling or solidifying the rubber. After the ultrashort fibers are deposited on the glove base, 3. The method for producing an internally flocked glove according to claim 1 or 2, wherein reverse mold release is performed. The manufacturing method of the inner surface flocking glove of Claim 3 which adheres the said ultra-fine short fiber by electrostatic flocking.