JPH0619525Y2 - Work gloves - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a work glove particularly suitable for use in manufacturing or handling of electronic equipment, precision equipment, food, medical equipment, and the like. TECHNICAL FIELD The present invention relates to a work glove which is made of a shrinkable sheet material as a main material and which fits the shape of a hand very well and has an excellent wearing feeling.

(Prior Art) In recent years, in manufacturing sites such as IC production factories, in many cases, it is obligatory to wear gloves in order to prevent dust and various secretions from hands from adhering to IC products and the like.

However, work gloves made of polyethylene or soft polyvinyl chloride, which are widely used in these fields at present, have low strength, and also have flexibility, elasticity, wear resistance,
In addition to material problems such as poor tearability and poor wearing comfort due to poor moisture permeability, as well as easy secretion of sweat and other secretory liquid inside the gloves, the size of gloves should be smaller than the size of fingers. Since it is standardized to a large size, it does not have a good fit and is unsuitable for work that requires fine movements of the hands, etc. The current situation is that there is an inconvenient problem that is not satisfactory in terms of workability and workability.

(Problems to be Solved by the Invention) The present invention has been made in view of the above circumstances, and an object thereof is to be extremely soft to the touch and capable of following any shape of a finger. It is to provide work gloves that have excellent fit and durability and that are particularly effective in improving work efficiency.

(Means for Solving the Problems) The inventors of the present invention have earnestly studied working gloves made of a combination of various sheet materials in order to achieve the above-mentioned object, and as a result, two sheets having a specific heat shrinkability have been obtained. A glove made of a thermoplastic polyurethane resin film (hereinafter referred to as a polyurethane resin film) that has one of the materials with high strength and excellent properties such as flexibility, elasticity, abrasion resistance, and moisture permeability is soft. The present invention has been completed based on the finding that it has excellent durability, and when it is shrunk by an appropriate heating means after being worn, it fits the fingers very well with an appropriate feeling of tight binding.

That is, the present invention provides a work glove in which two sheet materials, one of which is a thermoplastic polyurethane resin film, is cut and welded into a glove shape, and the thermoplastic polyurethane resin film is 0.1 to 3.0 cal. It is mainly composed of a crystalline polyurethane resin having a heat of crystal fusion of / g, and the sum of the boiling water shrinkages of the two sheet materials is 30 to 140% in the lateral direction of the glove. Related to working gloves.

Hereinafter, the working gloves of the present invention will be described in detail with reference to the drawings.

1 and 2 are plan views showing an example of work gloves of the present invention. In the drawings, reference numeral 1 is a sheet material made of a polyurethane resin film, 2 is another sheet material, and 3 is a peripheral edge of the glove. The welded portions 4 are wrist openings, respectively.
FIG. 3 is an enlarged sectional view taken along the line I-I in FIG. Here, the glove lateral direction in the present invention means a direction substantially orthogonal to the vertical direction when the direction pointed by the middle finger is the vertical direction, that is, the direction of line I-I in FIG.

In the present invention, the polyurethane resin is a generic term for rubber-like elastic polymers having a urethane group in the molecular structure mainly composed of difunctional polyol, diisocyanate and glycol, and having thermoplasticity. One or two of adipate ester-based, polyether-based, caprolactone ester-based, polycarbonate-based polyurethane resins and modified polyurethane resins obtained by further modifying these with amino acids and the like, which are distinguished by the type of the above-mentioned polyol or the like used. Examples of such materials include those of more than one kind, but in the present invention, those having a heat of crystal fusion of 0.1 to 3.0 cal / g are used in view of the characteristics for use in gloves. Here, the heat of crystal fusion is 0.1 ca
When it is less than 1 / g, the adhesiveness is strong and soft touch cannot be obtained, whereas when the heat of crystal fusion is more than 3.0 cal / g, the flexibility and elasticity are deteriorated and the fit and wear on the fingers are worn. Sex is impaired. The polyurethane resin film used in the present invention should be blended with a thermoplastic resin or elastomer such as polyvinyl chloride, polyolefin, polyester, polyamide, acrylic, etc. within a range that does not significantly change the properties. It is also possible to appropriately adjust the shrinkage temperature, speed, etc.

On the other hand, sheet materials other than the polyurethane resin film used in the present invention are films made of polyvinyl chloride-based, polyolefin-based, polyester-based, polystyrene-based, acrylic-based thermoplastic resins or elastomers.
Although a sheet is generally used, other materials such as woven cloth, non-woven cloth, foam sheet, and synthetic leather may be used, and a combination of two or more kinds of these may be used.

Here, woven and non-woven fabrics include natural fibers such as cotton and silk, glass fibers, inorganic fibers such as asbestos, recycled fibers such as viscose rayon and cupra, semi-synthetic fibers such as triacetate, nylon fibers, and polyester fibers. fiber,
Woven fabrics, knitted fabrics and non-woven fabrics made of at least one fiber material selected from synthetic fibers such as acrylic fibers, polyvinyl chloride fibers, polyolefin fibers, polyvinyl alcohol fibers, polyurethane fibers, etc. Examples include polyolefin-based, polyvinyl chloride-based, polystyrene-based foamed sheets, and synthetic leathers such as vinyl-based leather, nylon-based leather, and urethane-based leather.

The sheet materials such as the polyurethane resin film used in the present invention include ultraviolet absorbers, antioxidants, antistatic agents, antibacterial agents, colorants, lubricants, and inorganic fillers such as zeolite and calcium carbonate. By adding the various additives described above, durability, designability, moisture permeability and the like can be further improved.

The work glove of the present invention is formed by cutting and welding the two sheet materials into a glove shape. In this case, the two sheet materials of the front and back have a sum of both boiling water shrinkage ratios in the glove lateral direction. It is important to satisfy the characteristic value of 30 to 140%, and the range of 50 to 120% is preferable.

In the present invention, the reason why the heat shrinkage rate of the sheet material is expressed as the value in boiling water is that the heat conduction to the sheet material is more uniform and the heat conduction is more uniform than that of hot air or steam that is usually used as a heat medium for shrinkage. This is because the shrinkage rate can be accurately evaluated quantitatively, and when the sum of the boiling water shrinkage rates of the two sheet materials on the front and back sides measured by such a method is less than 30% in the lateral direction of the glove, the shrinkage is insufficient and the fit is poor and the fingers. However, the sum of boiling water shrinkage is 14
When it is more than 0%, the contraction stress increases, the feeling of tight binding to the fingers is strong, and it cannot be used for a long time.

As for the two sheet materials used for the work gloves of the present invention, either one of the sheet materials may be non-shrinkable as long as it satisfies the above heat shrinkage property, and the sheet material is longitudinally aligned. Even if it shrinks somewhat in boiling water, it does not matter as long as it does not cause significant deformation.

Further, the thickness of the sheet material used in the present invention cannot be unequivocally limited because characteristic values such as strength required depending on the use of the glove vary, but normally, the thickness of about 10 to 500 μ is the strength, It is preferable in terms of moisture permeability, fitability to fingers and tightness. Furthermore, the above sheet material can be subjected to embossing or punching such as a satin finish, if necessary, and when the sheet material is a thermoplastic resin film / sheet, the gloves can be easily reinforced and detached. For this purpose, various porous films or woven fabrics, non-woven fabrics, tarpaulins and the like may be laminated on the side corresponding to the inner surface of the glove within a range that does not significantly impair the heat shrinkability and elasticity.

(Example) In order to make it easier to understand the excellent effect of the working glove of the present invention, a detailed description will be given with reference to an example.
The measuring method and the evaluating method of the physical properties performed in the present invention are as follows.

(1) Heat of fusion of crystal (unit: cal / g) A 15 mg sample was placed in a differential scanning calorimeter (DSC), and this was heated at a heating rate of 15 ° C./min, and the area of an exothermic peak appeared during melting. The calorific value was calculated from the above, and the calorific value was calculated per 1 g of the sample.

(2) Boiling water shrinkage (unit:%) The sheet material was immersed in boiling water for 10 seconds, and the shrinkage during that time was measured.

(3) Fitability After wearing gloves made of sheet materials having various shrinkage rates of boiling water on the hands, the gloves were shrunk using a dryer. At that time, a glove that fits well with the shape of the hand and fits well (○), and a glove in which looseness was recognized was (x).

(4) Tight binding property Tightness was evaluated by the number of people who complained about the tightness of fingers and fingers when 10 people tried on gloves in the same manner as the above-mentioned fit property. . When even one in 10 people complained of tightness as a criterion, it was judged to be unsuitable as work gloves.

(5) Comprehensive evaluation Comprehensive evaluation is based on the results of fit, bondage, etc.
The suitability as a work glove that requires a fine movement of the hand was evaluated, and the suitable one was (○) and the unsuitable one was (x).

Examples 1 to 4, Comparative Examples 1 to 3 Adipate ester-based polyurethane resin films (heat of crystal fusion 1.6 cal / g) and soft polyvinyl chloride films each having a thickness of 40 μm and different in boiling water shrinkage in the width direction were prepared. A work glove was produced by cutting two sheets of front and back sheet materials, which were variously combined so that the film width direction corresponds to the glove lateral direction, into a glove shape and welding.

The results of evaluation of fit and tightness of these gloves are shown in Table 1. Table 1 shows that the heat shrinkage rate of the sheet material is within the range of the present invention, and it is extremely tight to the fingers due to its proper tightness. It has been confirmed that it fits well and is excellent as a work glove that requires fine movement of the hands.

(Effect of the Invention) The work gloves of the present invention as described above have a polyurethane resin film having a specific crystallinity on one of the front and back surfaces, and therefore have excellent strength and flexibility peculiar to the polyurethane resin, With its elasticity, wear resistance, and moisture permeability, it is a work glove that is soft, stuffy, and tough, and has many excellent characteristics.

Further, since the work gloves of the present invention are made of a sheet material having a specific heat shrinkability, it is possible to obtain any shape by shrinking the sheet material by applying an appropriate heating means such as hot air after wearing it. Since it has a remarkable effect that it can be fitted to the fingers with a moderate tightness, work in various food manufacturing factories, IC manufacturing factories, precision equipment manufacturing factories, etc. that require fine movements of the fingers. It is particularly suitable for gloves for operation or gloves for surgery at medical sites, and can greatly contribute to the improvement of work efficiency.

[Brief description of drawings]

1 and 2 are plan views showing an example of work gloves according to the present invention, and FIG. 3 is an enlarged sectional view taken along line I-I in FIG. 1 ... Front side sheet material (polyurethane resin film), 2 ... Back side sheet material, 3 ... Edge welded part, 4
...... Wrist opening

Claims (1)

[Scope of utility model registration request] 1. A work glove, which comprises cutting and welding two sheet materials, one of which is a thermoplastic polyurethane resin film, into a glove shape, wherein the thermoplastic polyurethane resin film is 0.1 to 3.0 cal. It is mainly composed of a crystalline polyurethane resin having a heat of crystal fusion of / g, and the sum of the boiling water shrinkages of the two sheet materials is 30 to 140% in the lateral direction of the glove. Working gloves.