JP2008163534A - Glove - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a working glove having excellent heat resistance, flame resistance and cut resistance, and excellent in heat insulation. <P>SOLUTION: The glove is formed of woven knit using heat resistant fiber, and is provided with a heat-insulation layer having a thickness of 1-5 mm and having numerous minute air bubbles therein at either one or both of the palm part or/and the palm-side finger part of the glove. Such a structure results in extremely suppressing rise in temperature inside the glove when the wearer touches a heated plate or the like so as to enable long-time work. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a glove suitable for an operation for handling a high-temperature material or the like.

  Gloves made of aramid fibers have excellent heat resistance and flame resistance, and there is no risk of the gloves melting even when touched by high-temperature articles or flames. Also, they have cut resistance against blades, glass pieces, metal pieces, etc. Because of its superiority, it is useful as a work glove for use in factories and workplaces. However, since it is not suitable for work for handling a material having a surface temperature exceeding 200 ° C. for a long time, heat insulation is required in addition to heat resistance, flame resistance and cut resistance. There is a method of forming a pile knitted fabric in order to enhance the heat insulation, but there is a problem that if the thickness of the glove is increased, the glove is stiff and the fit property is inferior and workability is lowered.

Further, as a technique for producing a heat insulating glove, a method of improving the air permeability by roughening the eyes of the woven or knitted fabric has been proposed, but there is a problem that cutting resistance and the like are lowered by making the eyes rough. There is also a method of providing a heat insulating layer on a glove. For example, in Patent Document 1, the inner surface of a glove formed of a woven or knitted fabric using a blended yarn of 50% flame-resistant fiber and 50% para-aramid fiber is produced by the blended yarn. A work glove provided with a felt-like pad is disclosed. However, according to the disclosed data, when a work glove is pressed against the surface of a hot plate having a surface temperature of 220 ° C., the internal temperature of a conventional aramid fiber glove (Kevlar glove) is 97 after 150 seconds. On the other hand, the internal temperature of the work gloves provided with felt-like pads is 84 ° C. after 150 seconds, and it is difficult to say that the effect of improving the heat insulation is sufficient.
JP-A-10-292213 (Claims 1, 2, 4, 5, paragraph number 0017, etc.)

  In order to solve the above-described problems, an object of the present invention is to provide a glove having excellent heat resistance, flame resistance and cut resistance and excellent heat insulation.

  As a result of intensive studies to solve the above-mentioned problems, the present inventors have provided a heat insulating layer containing a myriad of fine bubbles in a glove formed of a woven or knitted fabric using heat resistant fibers. The present inventors have found that a glove having excellent workability and excellent creativity and heat insulation can be obtained, and the present invention has been achieved.

  That is, the present invention is a glove composed of a woven or knitted fabric using a heat-resistant fiber, and includes a heat insulating layer containing innumerable fine bubbles in one or both of the palm part and the palm side finger part of the glove. A glove is provided.

  In the glove of the present invention, the heat insulating layer is preferably provided on the surface, inner surface or intermediate layer of the glove, and is composed of at least one material selected from synthetic resin foam and bark or a processed product thereof. And the thickness is preferably 1 to 5 mm.

  In addition, there are conduction, convection, and radiation (radiation) as a heat transfer mechanism, and there are many techniques for radiant heat therein, and such a technique may be used in the glove of the present invention. For example, a metal foil layer (such as an aluminum foil layer) may be provided on the surface, the inner surface or the intermediate layer of the glove.

  According to the present invention, it is possible to provide a glove that is light in weight, excellent in durability, heat resistance, flame resistance, cut resistance, and heat insulation, oil resistant, non-slip, and good in workability. Thereby, the temperature rise inside a glove at the time of contacting with a hot plate etc. can be suppressed extremely, and work for a long time is attained. In addition, since the cork layer and the like are impermeable to liquids, there is an effect of preventing chemicals, oil, and the like from directly touching the hand. And a heat insulation layer can be simply provided only by sticking or laminating | stacking a cork sheet etc. on a palm part and a finger | toe part.

  In addition, in the aramid fiber gloves, in addition to the effects of conventional aramid fiber gloves, such as durability, cut resistance, heat resistance, and flame resistance, heat insulation is imparted, so that the surface temperature exceeds 200 ° C. It is suitable for the work which handles etc. over a long time.

  The glove of the present invention is a glove composed of a woven or knitted fabric using heat-resistant fibers, and includes a heat insulating layer containing innumerable fine bubbles in one or both of the palm part and the palm side finger part of the glove. Is provided. The woven or knitted fabric is not particularly limited as long as it is produced according to a conventionally known method. The woven fabric may be any of plain weave, twill weave, satin weave and the like. The knitted fabric may be either weft knitting or warp knitting.

  As the heat-resistant fiber, using a high-performance fiber having a high tensile strength and a high tensile elastic modulus can impart excellent durability and cut resistance to the glove, and for applications involving dangerous work. This is preferable because it can be a suitable glove. The high-performance fiber has a high strength of 10 cN / dtex or more, preferably 15 cN / dtex or more, measured based on JIS L 1013: 1999 (chemical fiber filament yarn test method), and based on the test method. It is preferable that the fiber satisfies the high tensile modulus of 400 cN / decitex or higher as measured.

  Examples of materials constituting such high-performance fibers include aramid fibers, wholly aromatic polyester fibers (for example, Kuraray Co., Ltd., trade name “Vectran”), polyparaphenylene benzobisoxazole fibers (for example, Toyobo Co., Ltd., trade name “ Zylon ”), ultra high molecular weight polyethylene fiber (for example, trade name“ Dyneema ”manufactured by Toyobo Co., Ltd.), LCP (liquid crystal polymer) fiber, and the like. The work glove of the present invention may be composed of one kind of the high-performance fiber, or may be composed of any two or more kinds.

  Among the above high-performance fibers, an aramid fiber is preferable because it is excellent in heat resistance and cut resistance. Examples of the aramid fiber include a meta-aramid fiber and a para-aramid fiber, and examples of the meta-aramid fiber include meta-type total aroma such as polymetaphenylene isophthalamide fiber (manufactured by DuPont, trade name “NOMEX”). Group polyamide fiber. Examples of the para-aramid fiber include polyparaphenylene terephthalamide fiber (trade name “Kevlar” manufactured by Toray DuPont Co., Ltd.) and copolyparaphenylene-3,4′-diphenyl ether terephthalamide fiber (manufactured by Teijin Limited). Para-type wholly aromatic polyamide fibers such as “Technola”). Among these aramid fibers, a polyparaphenylene terephthalamide fiber having excellent flame resistance that does not melt by heat while having high strength and high elastic modulus is particularly preferable. The aramid fiber can be produced by a known method or a method equivalent thereto, and a commercially available product as described above may be used.

  In the present invention, as the yarn constituting the woven or knitted fabric, long fiber filament yarn, spun yarn and the like can be used. However, when the spun yarn is used, high cut resistance can be exhibited even if the yarn is thinned. It is preferable because the entire glove can be formed thin to be flexible and have good fit, and further, an initial temperature rise when brought into contact with a high temperature hot plate can be suppressed. As the spun yarn, a spun yarn produced from a high-function fiber staple according to a known spinning method may be used. Specific examples of the spinning method include a cotton spinning method, a woolen method, a spinning method, a hemp spinning method, a silk spinning method, and a tow spinning method, and these methods may be appropriately combined. In the production of spun yarn, recycled high-performance fiber staples can be mixed with unused high-performance fiber staples. In addition, the total fineness of the thread | yarn which forms a glove has the preferable range of 194-3300 dtex. The single yarn fineness is preferably in the range of 0.1 to 10 dtex, more preferably in the range of 0.4 to 5 dtex.

  In the present invention, in the case of providing a heat insulating layer containing innumerable fine bubbles in a glove, a method of sticking or laminating a material enclosing innumerable fine bubbles or a processed product thereof to a woven or knitted glove can be mentioned. Specifically, a sheet having the above-described material, or a sheet having a squeezed or broken binder of the above-described material or a binder, a desired thickness or size, After cutting into a shape, the cut product is attached to a glove and laminated. Alternatively, a method may be used in which scraps and broken materials of the above materials are dispersed in an appropriate binder to prepare a coating solution, and the coating solution is applied to a glove.

  Although the thickness of a heat insulation layer is not specifically limited, Usually, total thickness is 1-5 mm. When the total thickness is less than 1 mm, it is difficult to expect a heat insulating effect, and when the total thickness exceeds 5 mm, the feeling of firmness increases and workability deteriorates. The heat insulating layer may be formed by laminating one or two or more of the same or different layers.

  Examples of materials enclosing countless fine bubbles include synthetic resin foam (polyurethane foam, polystyrene foam, etc.), natural fibers, synthetic fibers, inorganic fibers, natural wood fibers (wood chips, sawdust, etc.), and the like. At least one material selected from bark (cork or the like) is preferred. The synthetic resin and fiber may be subjected to a flame retardant treatment. Among these materials, natural products are preferable in view of lightness, safety, heat insulation and the like. In particular, a cork sheet is a preferable material, and a natural cork sheet or a synthetic cork sheet obtained by binding natural cork scraps and broken materials with a binder can be used.

  In the present invention, the heat insulating layer is preferably provided on the surface, the inner surface or the intermediate layer of a glove formed of a woven or knitted fabric using heat resistant fibers. When pasted on the surface, there is an advantage that the surface is difficult to slip, the workability is good, and even if the heat insulating layer deteriorates, it can be replaced immediately. When put in the intermediate layer, there are advantages such as extending the life of the heat insulating layer, preventing the pieces of the heat insulating layer from falling off, and not requiring an adhesive. Specifically, it may be provided on one or both of the palm part and the palm side finger part of the glove, and a cork sheet is attached to the part of the surface or inner surface of the glove or double knitted. The method etc. which provide a cork sheet in the intermediate | middle layer between gloves are mentioned.

  In the case of sticking the sheet, it is preferable to use an appropriate adhesive selected from acrylic, urethane, synthetic rubber, and the like, with good heat resistance.

  Moreover, when laminating | stacking a sheet | seat, a sheet | seat can also be put into the pocket attached to the glove, or a sheet | seat can be pinched | interposed between the gloves knit | double-knitted, The form is not specifically limited.

  Hereinafter, the present invention will be described more specifically with reference to Examples and Comparative Examples, but the present invention is not limited to only the following Examples. In the following examples and the like, each characteristic was evaluated as follows.

(Evaluation of thermal insulation)
Attach a thermocouple to the sample (or the inner palm of the glove), place the sample on a hot plate set at 300 ° C (surface temperature 285 ° C, ambient temperature 32 ° C), and load from the top of the sample (weight 8.89N (907gf)) ) Was measured for 5 minutes at the top of the sample (or inside the glove). The time required for the temperature to reach the second kind burn temperature (170 ° C.) was evaluated as ○ for 60 seconds or more, ◎ for 120 seconds or more, and x for less than 60 seconds.

(Example 1)
Polyparaphenylene terephthalamide fiber (manufactured by Toray DuPont Co., Ltd., trade name “KEVLAR (registered trademark) 29”, tensile strength 20.3 cN / dtex, tensile elastic modulus 490 cN / dtex, single yarn fineness 1.65 dtex) Using a spun yarn No. 20 single yarn (cotton count) obtained from (fiber length 51 mm), a smooth structure with a well of 30 pieces / inch, a course of 22 pieces / inch, and a basis weight of 245 g / m ² was knitted by a circular knitting machine. A commercially available cork sheet having a thickness of 2 mm was laminated on one knitted fabric, and the cork sheet was used as a hot plate to evaluate heat insulation.

(Example 2)
A knitted fabric was knitted in the same manner as in Example 1, and a cork sheet having a thickness of 2 mm was laminated between the two knitted fabrics.

(Example 3)
A knitted fabric was knitted in the same manner as in Example 1, and two cork sheets with a thickness of 2 mm were laminated between the two knitted fabrics.

(Comparative Example 1)
The knitted fabric (smooth structure) made of spun yarn of polyparaphenylene terephthalamide fiber knitted in Example 1 was used.

(Comparative Example 2)
Using two spun yarns No. 20 twin yarn (cotton count) obtained from the cut staple of the polyparaphenylene terephthalamide fiber of Example 1, it was cylindrical with a 10 gauge glove knitting machine manufactured by Shima Seiki Seisakusho Co., Ltd. Knitted fabric (horizontal knitting organization).

(Comparative Example 3)
Using 5 spun yarns (cotton counts) obtained from the cut staple of the polyparaphenylene terephthalamide fiber of Example 1, it was formed into a cylindrical shape with a 7 gauge glove knitting machine manufactured by Shima Seiki Seisakusho. Knitted fabric (horizontal knitting organization).

(Comparative Example 4)
Two spun yarn No. 20 double yarn (cotton count) obtained from the cut staple of the polyparaphenylene terephthalamide fiber of Example 1 was used as the base yarn, and one spun yarn No. 20 double yarn (cotton count) and the spun yarn were used. A cylindrical pile knitted fabric (horizontal knitting structure) was knitted with a 10 gauge pile glove knitting machine manufactured by Shima Seiki Seisakusho using three 30th single yarns (cotton counts) as pile yarns. The heat insulation was evaluated with the pile surface facing the hot plate.

  Tables 1 and 2 collectively show the relationship between the elapsed time and the temperature change in the above Examples and Comparative Examples.

  From the results of Tables 1 and 2, it was found that by providing a cork sheet, the temperature rise is extremely slow compared to the case where it is not provided, and heat insulation can be imparted. The knitted fabric has a slower temperature rise as the gauge number is smaller, but generally has a tendency to be inferior in cut resistance or the like. The glove of the present invention has heat insulating properties even when the number of gauges of the knitted fabric is increased, and has excellent cut resistance. On the other hand, the pile knitted fabric made of aramid fiber spun yarn had good heat insulation in the knitted fabric made of aramid fiber, but was stiff.

  FIG. 1 is a schematic view and a partial cross-sectional view (in a circle) showing an example in which a sheet is attached to the palm part and palm-side finger part of the surface of a glove equipped with five fingers. As shown in FIG. 1, workability is not impaired if the sheet is attached so that the sheet does not come into contact with the joints of the finger parts or the bent parts of the palm parts. FIG. 1 shows one embodiment according to the present invention, and the present invention is not limited to this embodiment, and various modifications are possible within the scope of the invention described in the claims. Needless to say, these are also included in the scope of the present invention.

  The gloves according to the present invention have high heat insulating properties, and are excellent in durability and cut resistance, and are not stiff, so that they can be suitably used for working with high-temperature materials. It can be suitably used.

It is the schematic and partial sectional view which show an example of the glove concerning the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Sheet sticking (lamination) glove 2 Glove knitted fabric 3 Heat insulation layer which has innumerable fine bubbles inside

Claims (5)

  A glove composed of a woven or knitted fabric using a heat-resistant fiber, and a heat insulating layer containing innumerable fine bubbles is provided in one or both of the palm part and palm side finger part of the glove. Gloves characterized by.   The glove according to claim 1, wherein the heat insulating layer is provided on a surface, an inner surface or an intermediate layer of the glove.   The glove according to claim 1 or 2, wherein the heat insulating layer is composed of at least one material selected from synthetic resin foam and bark or a processed product thereof, and has a thickness of 1 to 5 mm.   The glove in any one of Claims 1-3 by which the metal foil layer is provided in the surface, inner surface, or intermediate | middle layer of the said glove.   The glove in any one of Claims 1-4 whose said heat resistant fiber is an aramid fiber.

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