JPS61289102A - Glove - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to gloves, particularly work or sports gloves made of elastic polyurethane sheet material.

<Prior Art> Conventionally, gloves for work or sports have been known that are made of cloth with a chamber coated with rubber latex, that is, so-called rubberized gloves. However, such rubberized gloves have low breathability and are thick, so
It is uncomfortable to wear, especially as it inhibits the sensation and touch of the fingers.
They were unsuitable for precision work or sports that relied on them. Waterproof gloves made of synthetic resin films or sheets fused and cut are also known, but because the base fabric has little stretch, these gloves are significantly larger than the size of the hand.
It has the same problems as above because it does not fit the hand and is easy to slip when worn. In addition, in order to improve these shortcomings,
Gloves formed from thin films of elastic synthetic resin or rubber are also well known. Although they fit the hand, such elastic films generally have a relatively high modulus, so the fingers feel tied up, and lack breathability, which causes sweat to accumulate inside the film, impairing the feeling of wearing it.

In order to provide good air permeability, woven or knitted fabrics, nonwoven fabrics, etc.
A sheet material made of fibers is optimal, but fiber sheet materials that are thin enough not to significantly impede the tactile sensation of the hands and fingers lack dimensional and structural stability, and tend to collapse with the slightest amount of friction, making them difficult to work with. It is unsuitable as a material for commercial or sports gloves. Furthermore, in order to impart dimensional and morphological stability to such sheet materials, many proposals have been made in the past to bond the intersection points of the constituent fibers through resin processing, etc.
This leads to rough hardening of the sheet material, and the elasticity is significantly reduced, which further impairs the wearing feeling and the tactile sensation of the fingers.

The inventors have filed a patent application No. 58-114485.
It was discovered that by applying the polyurethane elastic fiber nonwoven fabric proposed in No. 1, it is possible to solve all of the above-mentioned problems of existing gloves and to obtain gloves that are particularly suitable for use in work and sports. , the present invention has been achieved.

<Problems to be Solved by the Invention> An object of the present invention is to fit the hand well without causing an uncomfortable and excessively tight feeling when worn, and to not substantially inhibit the free movement of the fingers. It is an object of the present invention to provide a glove that can maintain a good feel on the hands and fingers.

A further object of the present invention is to provide gloves that are made of thin m-fiber sheet material, have appropriate elasticity, breathability, moisture permeability, and form stability, do not get stuffy, have an excellent feeling of wearing, and have good durability. There is something to do.

Another purpose is to provide gloves that have large surface frictional resistance and maintain good tactile sensation in the fingers, making them suitable for work, especially precision work, and sports that require delicate hand and finger movement control and reflex movements. It is in.

Yet another object is to provide work gloves suitable for work requiring dust-free properties, such as work in the electronic equipment industry, precision equipment industry, pharmaceutical/food industry, medical workplaces, and the like.

Another object is to manufacture such gloves in large quantities and inexpensively in a simple process. 1.Other purposes will become clear from the following description.)
:<1? ! ID; Tsuya 5 O 6. . 1□
・1 The above object is made of two elastic polyurethane sheet materials, at least one of which has breathable elastic polyurethane non-woven fabric as an essential component, and whose peripheral edges are fused leaving a wrist opening. This is achieved by a pair of gloves characterized by: '. 1゜＋M*uy lx
J4 # @c Hey, 12, Oh, 1□:.

The two sheet materials that make up the light gloves are both
j: Selected elastic polyurethane nonwoven fabric. 11
[,:・ In a preferred example of the present invention, the two sheets
::) UN's -kake, □8ゎEyu□. 9,7□,
), and the other can be a laminate of an elastic polyurethane nonwoven fabric and an elastic polyurethane film.

In a further preferred embodiment of the invention, both of the two sheet materials are laminates of an elastic polyurethane nonwoven fabric and an elastic polyurethane film. Moreover, it is preferable that at least one sheet material has an embossed pattern.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the structure of the present invention will be explained based on the embodiments shown in the accompanying drawings, together with its operation.

1 and 2 are plan views each showing an example of a glove according to the present invention, and FIG. 3 is an enlarged sectional view taken along the line ■-■ in FIG. 1.

The glove according to the present invention is constructed from two elastic polyurethane sheets, at least one of which is a non-woven fabric.
One sheet forms the main part 2, the other one forms the upper part 3,
As shown in FIG. 1, finger parts 1. Headquarters 2.
The contour of the hand, which is formed by fusing the peripheral edge 5 of the upper part 3 leaving the wrist opening 4, may include all four fingers other than the forearm finger, for example, as shown in Fig. 2. Further, an appropriate form can be adopted depending on the purpose and use, such as a form in which the toga finger and index finger or the middle finger are separated.

The elastic polyurethane nonwoven fabric most suitably applied to the present invention has been proposed by the present inventors in Japanese Patent Application No. 58-94485. That is, melt-spun polyurethane elastic filaments are laminated without being substantially bundled,
The contact points of the laminated filaments are joined by the filaments themselves, and the bending resistance (y) is expressed by the general formula: y < 0.2x + 20 (y is bending resistance (ms), x is basis weight ( It is a polyurethane elastic fiber nonwoven fabric with excellent flexibility, stretchability, and air permeability, and the diameter of the monofilament is usually 30 microns or less on average, preferably 25 microns on average. The thickness is preferably 20 microns or less, particularly preferably 20 microns or less. Although there may be variations in the diameter of monofilament, it is desirable that the diameter of monofilament is 50 microns or less even in the maximum case, and the sa! As the l diameter increases, the nonwoven fabric becomes rough and rigid.

One of the important characteristics of such a nonwoven fabric is that its breaking strength and elongation are extremely high, and its elastic properties are excellent. This is because it directly reflects the performance of the polyurethane elastic fibers that make up the nonwoven fabric, and it is not possible to achieve this with conventional nonwoven fabrics made of inelastic polymers or nonwoven fabrics made of polymers with poor elastic performance such as polyester ether elastics. The performance is unparalleled.

The elongation at break of this nonwoven fabric is usually 300 to 5 oots, preferably 50 oz or more. The breaking strength varies depending on the thickness of the nonwoven fabric, but is usually 0.4 to 1.2 kg/c+s, preferably 1.0 kg/am or more. Further, the recovery rate after 10 oz extension is usually 85% or more, preferably 90% or more, and the recovery rate after 5 oz extension is 8 oz or more. The strength, elongation, and elongation recovery rate of the nonwoven fabric are
It varies depending on the adhesive strength at the point of contact between the 1i fibers.
However, the fact that this nonwoven fabric exhibits the above-mentioned strength, elongation, and elongation recovery rate indicates that the bonding at the contact points is sufficiently performed.

In addition, the outstanding feature of this nonwoven fabric is that it exhibits excellent flexibility and stretchability even though virtually all of the fiber intersections are joined, and it is a thin sheet with an extremely small Fa fiber diameter and a small basis weight. However, it not only has good dimensional stability and shape stability, but also high durability.

Furthermore, the nonwoven fabric suitably used in the present invention has a
~150g/■2 basis weight and at least 10c
It has an air permeability of c/cm2/see.

Furthermore, the greatest feature of such nonwoven fabrics is that they are extremely flexible. Bending resistance of nonwoven fabric (JIS-L-10
96 (45 degree cantilever method) increases as the basis weight of the nonwoven fabric increases, but in the nonwoven fabric of the present invention, when the basis weight is x (g/+2) and the bending resistance is y (s+m), y < 0.2x + 20, preferably in the range y < 0.2x + 10.

This feature is achieved by a combination of the physical properties of the polyurethane elastomer, the structure of the nonwoven fabric, and the small diameter of the constituent fibers as described above. something that could not be done. Therefore, the bending resistance suitable for the present invention is in the range of 20 to 50 mm.

The above-mentioned nonwoven fabric is produced by laminating substantially continuous filaments obtained by melt-spinning a known thermoplastic polyurethane elastomer into a sheet shape by injecting a high-temperature gas flow to the spun yarn and thinning the resulting filament. The contact point of the filament is obtained by bonding the filament itself. That is, a thermoplastic polyurethane elastomer is melted and discharged from a spinneret using, for example, a spinning device described in Japanese Patent Publication No. 41-7883, and filaments are finely formed by, for example, a heated gas stream injected from both sides of the nozzle. turn into something. The attenuated filaments are separated from the gas stream and stacked on a collecting device, such as a moving conveyor net, without being substantially focused.

The stacked filaments are bonded at their contact points by the filaments themselves in the stacked state due to their own heat. Before or after cooling and solidifying the filaments after being laminated on the collection device, they may be bonded by heating and pressurizing them using a roller or the like. It is better not to have too long a distance between the layers to be stacked on top, at most 1.
m, preferably 50 cm or less.

The method for measuring each physical property value of the upper and lower woven fabrics is as follows.

[Breaking strength and elongation] A sample with a width of 2 cm is stretched according to utt, -toss with a grip interval of 5 cm and a pulling speed of 10 cm/win, and the strength and elongation per 1 cm width at break are measured. .

[100 (50)! Elongation recovery rate] A sample with a width of 2 cm was grasped at a gripping interval of 5 cm and a pulling speed of t.
Extend by 100 (50) $ as oes/win and immediately recover to depth at the same speed. The residual elongation rate L (%) was determined from the recorded load-elongation curve, and +00
(50)! Calculate the elongation recovery rate.

[Bending resistance] Based on the 45° cantilever method of J 15-L-1098.

[Breathability] A Frazier type tester of J 15-L-10118 is used.

The elastic polyurethane film used in the present invention can be easily obtained by melt extrusion (forming using a T-die), dry film forming method, or wet film forming method, but the resulting material has good elasticity, flexibility, and practical properties. In order to provide sufficient strength, the thickness of the film must be relatively thin.

Since the thickness is preferably 5 microns or more and 30 microns or less, a film produced by a dry film forming method or a wet film forming method is suitable.

Dry film using the dry film forming method is produced by applying a polyurethane elastomer dissolved in a solvent onto release paper using a knife doctor, etc., and then drying it, but the resulting material has good elasticity and flexibility. In order to achieve this, the 1oox modulus of the polyurethane elastic body used must be 40 kg/c+
A2 or more and 100kg/cm2 or less, and tensile strength of 45
A material with a weight of 0 kg/cm2 or more may be used.

Such polyurethane elastomers are sold in various types by polyurethane elastomer manufacturers, and the required quantity of elastomers can be easily obtained.

Wet film is made of nylon tack or polyester tack that has been treated with silicone for good releasability. □After applying a polyurethane elastomer on the lid in the same way as for dry film, it is immersed in water to form a film of polyurethane. Obtained by solidification (so-called wet regeneration). As mentioned above, the wet film has low mechanical strength due to its microporosity, but it is effective in imparting moisture permeability to the material of the present invention. Various types of polyurethane elastic bodies for wet film □' are commercially available, and it is preferable to use one having the same 100z modulus and tensile strength as in the case of dry film, and visible elastic bodies are easily available. The performance of such elastic polyurethane film is as follows:
For example, breaking strength: 1.0-20.0k
g/cm breaking elongation: 300-900%5
0% elongation recovery rate 290z or more Moisture permeability: 1500g/+52-24h
r, or more are preferred.

In particular, it is preferable that the moisture permeability is 2000g/+2/24hr or more.
According to 08, measurement m-humidity, 40°C, 90$I'1.
H. Moisture absorption time is 4 hours.

As a method for imparting moisture permeability to the polyurethane film used in the present invention, there are methods of using a dry film and a wet film as described above. The former method is as disclosed in Japanese Unexamined Patent Publication No. 513-53788.

That is, there is a method of adding and polymerizing N-carboxyamino acid anhydride such as glutamic acid-γ-methyl ester-N-carboxylic anhydride to polyurethane, and the amino acid modification rate is 2 to 2.
20% is preferred.

,V,t? Preferably, the urethane is used as a film with a thickness of 5 to 20 microns.

In the present invention, when two nonwoven fabrics are used as the elastic polyurethane sheet material, at least one of them may be laminated with the elastic polyurethane film as described above. In this case, the polyurethane nonwoven fabric and the polyurethane As the adhesive for integrating the film, it is preferable to use an adhesive for dry synthetic leather, especially a two-component type thermosetting urethane elastomer.There are many types of such adhesives on the market, but Stretchability of the material.

100 points to avoid losing flexibility! Relatively low modulus, usually 20kg/cm2 or more, 50kg
/cm2 or less.

Since the nonwoven fabric and film to be integrated are both polyurethane elastic bodies, integration with adhesive is extremely easy, and the amount of adhesive used is 5 g/+e2 or more, 40 g.
/intestine 2 or less, preferably 1081 layer 2 or more 125g/■2
If the following conditions are met, a material with sufficient adhesion strength and flexibility can be obtained.

In the present invention, one layer of elastic polyurethane sheet material can be used as a glove, but it is preferable that at least one sheet material is embossed to give the surface an embossed pattern. The formation of the pattern further enhances the anti-slip effect when the glove is used, and further improves the abrasion resistance and the ability to prevent the passage of dust.

Embossing can be performed, for example, by passing the sheet material between an embossing roller heated to 100 to 150° C. and an elastic roll such as a valve or cotton roll.

Examples of the embossed pattern formed on the surface of the sheet material include a dot pattern, a polka dot pattern, a dash pattern, a lattice pattern, a striped pattern, a checkered pattern, and an arabesque pattern.

There are wave patterns, matte patterns, leather wrinkle patterns, etc., and dot patterns are particularly preferred; patterns consisting of thin lines tend to reduce tear strength and are not preferred.

When the sheet material is an elastic polyurethane nonwoven fabric, the unevenness ratio of the embossed pattern is 1/9~! +/1 preferably 37
It is within the range of 7 to 7/3. When the unevenness ratio is within the above range, in the concave portions where the nonwoven fabric is compressed, the bond between the filaments becomes even stronger and the density increases, improving the wear resistance and dust collection properties. Since the convex portions, which have a relatively smaller density than the concave portions and have good air permeability, are distributed in an appropriate ratio, sufficient air permeability is guaranteed for practical use. but,
When the unevenness ratio is outside the above range, the effect of embossing cannot be obtained, and the breathability and wearing comfort are also poor.

To obtain the glove of the invention, two sheets of said sheet material are superimposed, for example by a high frequency welder equipped with a mold corresponding to the contour of the hand.

It is preferable to carry out melt cutting and fusion bonding at the same time.

In that case, at least one of the elastic sheet materials is stretched 70% or less, preferably 10 to 50% in the lateral direction, that is, in the direction perpendicular to the middle finger, in order to facilitate insertion of the hand and obtain a suitable fit. If the elongation rate exceeds 70%, it will be easier to insert the sheet with one hand, but the fit will be poor when worn, and heat-sealing and
Easy to tear when cutting.

<Effects of the Invention> As mentioned above, the gloves of the present invention are made of two elastic polyurethane sheet materials joined by heat fusion without using sewing threads, so they have great elasticity, fit well in the hand, and are flexible. Therefore, there is less discomfort when wearing it.

In addition, since the gloves of the present invention are made of a highly elastic polyurethane sheet material with a relatively small modulus and a high elongation recovery rate, the gloves of the present invention fit comfortably in the hand with a small sense of tightness, which prevents free movement of the fingers. Furthermore, since it has appropriate breathability and moisture permeability, the inside does not get stuffy and sweat does not accumulate, making it comfortable to wear.

Furthermore, gloves made from sheet materials that are thin enough not to substantially impede the feel of the hands and fingers are suitable for use in precision manual work that relies on the senses of the hands and for sports where delicate motor control and reflex NgJ are important. Although it is thin and breathable, it has good dimensional and morphological stability and has a long service life because virtually all of the male intersections of the nonwoven fabric are bonded together. It has a unique advantage.

Furthermore, since the surface frictional resistance is large, the object gripped by the glove does not easily slip.Furthermore, since the elastic polyurethane nonwoven fabric used in the gloves of the present invention is substantially composed of continuous filaments, it itself does not generate dust. In particular, the chamber is made of sheet material containing polyurethane film,
Alternatively, if it is made of an embossed elastic polyurethane non-woven fabric, even if sweat or grime comes out from the hands, it will not move and adhere to the object it is gripping, and it will have a sufficient ability to prevent the passage of dust.

Because of these features, the gloves of the present invention can be used for surgery, for working with glass bottles, for chemical experiments, for driving a car, for various sports such as golf, tennis, and baseball, for general household use, etc. Anti-slip gloves, electronic equipment such as semiconductor devices, precision equipment industry such as watches, pharmaceutical and food industries,
They are useful as gloves for use in environments where dust-free properties are required, such as in medical settings.

Further, since a high frequency welder or the like can be used, mass production can be carried out at low cost, making it extremely advantageous in terms of cost.

[Brief explanation of drawings]

1 and 2 are plan views showing an example of the glove according to the present invention, respectively, and FIG. 3 is an enlarged sectional view taken along the line ■-■ in FIG. 1. l... Finger part 2... Chamber part 3... Instep part 4...
・Wrist opening 5... Peripheral part Fig. 1 Fig. 2 [. ° l

Claims (1)

[Claims] 1. Consisting of two elastic polyurethane sheet materials, at least one of which has a breathable elastic polyurethane nonwoven fabric as an essential constituent material, the peripheral edges of which are fused leaving a wrist opening. Gloves that are characterized by: 2. The glove according to claim 1, wherein each of the two sheet materials is made of an elastic polyurethane nonwoven fabric. 3. The glove according to claim 1, wherein at least one of the two sheet materials is made of a laminate of an elastic polyurethane nonwoven fabric and an elastic polyurethane film. 4. The glove according to claim 1, wherein one of the two sheet materials is an elastic polyurethane nonwoven fabric and the other is an elastic polyurethane film. 5. The nonwoven fabric is made of filaments having an average fiber diameter of 50μ or less, has a basis weight of 50 to 150 g/m^2 and an air permeability of at least 10 cc/cm^2/sec, and has a contact point of the filaments. The glove according to any one of claims 1 to 4, wherein the filaments are substantially joined by the filaments themselves. 6. The nonwoven fabric has a breaking elongation of 300 to 800% and a
．． Breaking strength of 4 to 1.2 kg/cm and 85% or more of 1
Claim 5 has a 00% elongation recovery rate, a 50% elongation recovery rate of 90% or more, and a bending resistance of 20 to 50 mm.
Gloves as described in section. 7. Claim 5 in which the average fiber diameter is 30μ or less
Gloves as described in Section 6 or Section 6. 8. The film is 1500g/m^2・24hr. The glove according to claim 3 or 4, which has the above moisture permeability. 9. Moisture permeability is 2000g/m^2・24hr. The glove according to claim 8, which is the above. 10. The film has a breaking strength of 1.0 to 20.0 kg/cm, a breaking elongation of 300 to 900%, and a 50% elongation recovery rate of 90% or more, Gloves according to item 9. 11. The glove according to any one of claims 1 to 10, wherein at least one of the sheet materials has an embossed pattern.