JPH033531Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to gloves made of polyurethane nonwoven fabric, and particularly to dust-free gloves used in clean rooms.

(Prior Art) Gloves used in clean rooms are required to have the ability to prevent the passage of dust, as well as breathability and dust-free properties.

However, most of the gloves that have been used so far have been made of synthetic resin films or sheets, which have poor workability because they are not breathable and tend to get stuffy. In addition, gloves made of tricots, textiles, etc. are breathable but generate dust, making them unsuitable for use in clean rooms. on the other hand,
Japanese Utility Model Application No. 60-52910 proposes anti-slip gloves made of polyurethane non-woven fabric fused and bonded, which are breathable and dust-free and suitable for use in clean rooms. . However, when polyurethane nonwoven fabric produced by the melt blow method is used as is, the bonding between the polyurethane filaments is not always sufficient, and when worn for a long time, the filaments tend to float due to friction, become fluffy, and eventually fall off. There is. Further, since the gap between the filaments was large, the ability to prevent dust from passing was insufficient.

(Problems to be Solved by the Invention) The object of the present invention is to provide gloves suitable for clean room work that are breathable, non-dust-producing, have excellent dust-blocking properties, and have high abrasion resistance.

(Means for Solving the Problems) The glove of the present invention is a glove formed by overlapping and fusion bonding two polyurethane nonwoven fabrics, in which at least one of the nonwoven fabrics is embossed, and the embossed The pattern is characterized in that the area ratio of the concave portions to the convex portions is in the range of 1/9 to 9/1.

In order to obtain the gloves of the present invention, for example, two sheets of polyurethane nonwoven fabric are overlapped, the mold section of a high-frequency welder equipped with a glove-shaped mold is heated, and the cutting process is performed by melting and the joining process is performed by fusing. It is preferable to perform the cutting at the same time and then cut out the opening.

In this case, at least one of the nonwoven fabrics may be embossed in advance.

The breathable and stretchable polyurethane nonwoven fabric applied to the present invention is formed from polyurethane elastic fibers, and polyurethane elastic fibers produced by melt blowing are particularly suitable.

Next, an example of a polyurethane nonwoven fabric produced by the Melblowing method will be explained. Melting a thermoplastic polyurethane elastic body that can be melt-spun, for example,
The filament is discharged from a spinning nozzle using the spinning apparatus described in the publication, and the filament is thinned by a heated gas flow ejected from both sides of the nozzle, for example.

The attenuated filaments are separated from the gas stream and deposited on an auxiliary device, such as a moving conveyor net, without being substantially focused. The contact points of the laminated filaments are joined by the filaments themselves in the laminated state due to their own heat.
They may be bonded by heating and pressing using a roller or the like before or after cooling and solidifying after being laminated on the collection device.

The glove of the present invention uses the polyurethane nonwoven fabric obtained in this way, which has been embossed to provide a pattern of concave and convex portions on at least one side thereof. Embossing can be carried out by passing the polyurethane nonwoven fabric between an embossing roll heated to, for example, 100 to 150°C and an elastic roll made of pulp, cotton, or the like. The unevenness imparted by embossing may be single-sided embossing or double-sided male and female embossing, but double-sided male and female embossing, in which a pattern is previously applied to an elastic roll and then processed, is preferred.

The pattern imparted by embossing is not particularly limited, but for example, dot-like,
There are polka dots, lattice, darts, cotton, checkered patterns, arabesque patterns, corrugated patterns, satin textures, leather grains, etc.

Particularly suitable are fine dot-like patterns such as circles, ellipses, crosses, rectangles, squares, and parallelograms with a pitch of 5 mm or less and a major axis of 3 mm or less.

The area ratio of the concave and convex parts of the pattern is 1/9 to 9/
1 is preferred, and 3/7 to 7/3 is particularly preferred.
The recesses referred to here correspond to the protrusions of the embossing roller, and the processed polyurethane nonwoven fabric is compressed, increasing its density, which improves the ability to prevent dust from passing through, and further strengthens the bond between the filaments, which improves wear resistance. Describe the areas where you have improved. If the area ratio of the concave portions to the convex portions is too large, the breathability will decrease, resulting in poor wearing comfort. Also, if the recess is too small,
The effects of embossing, such as improvement in abrasion resistance and improvement in dust passage prevention properties, are insufficient.

Furthermore, a pattern in which the depth of the engraving of the embossing roller is graded and the density of the embossed nonwoven fabric is distributed is also suitably used. In this case, the concave portion corresponds to the area of the highest part of the embossing roller, and the convex portion refers to the other portions.

It is important that the embossing pattern and processing conditions are appropriately selected to strike a balance between breathability and dust passage prevention performance, depending on the intended use of the gloves.

As for the performance of the embossed polyurethane nonwoven fabric thus obtained, the following are suitable, for example.

Fabric weight 50-150g/ ^m2 Strength 0.5-1.5Kg/cm Cutting elongation 200-800% 50% elongation recovery rate 90% or more Air permeability ^5-200cm3 / ^cm2 /sec 1-2μm Dust passage prevention efficiency 50% or more (Effects of the invention) The gloves of the invention are made of the embossed polyurethane nonwoven fabric as described above, and are joined by fusion without using sewing thread. As a result,
It has great elasticity and fits well in the hand even though it has a flat structure.It is flexible, so there is little discomfort when wearing it, and because it is breathable, sweat does not accumulate when worn, and it has a high resistance to slipping. It has features such as preventing objects from slipping. Furthermore, it has high abrasion resistance and is excellent in preventing dust from passing through.

Because of these features, the gloves of the present invention are useful as gloves for clean rooms in electronic industries, precision machinery industries, pharmaceutical factories, food factories, and the like.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of the glove of the present invention, FIG. 2 is a sectional view of an embossed polyurethane nonwoven fabric showing one example of implementation, and FIG. 3 is an example of an embossed pattern. 1: Finger part, 2: Palm part, 3: Back part, 4: Opening part,
5: fused peripheral part, 6: concave part, 7: convex part, 8:
Square dot, 9: circular dot.

Claims (1)

[Claims for Utility Model Registration] (1) In a glove formed by overlapping and fusion bonding two polyurethane nonwoven fabrics, at least one of the nonwoven fabrics is embossed,
The glove is characterized in that the area ratio of the concave portions to the convex portions of the embossed pattern is in the range of 1/9 to 9/1. (2) The glove according to claim 1, wherein the pattern imparted to the polyurethane nonwoven fabric by embossing is dot-shaped.