KR100757522B1 - Working shoes having the antistatic function - Google Patents

Abstract

The present invention relates to a work shoes having an antistatic function, in the work shoes having an antistatic function for releasing the static electricity caused by the human body of the worker, the work shoes are a hard conductive outsole 50 which is a molded body of a relatively high hardness, The soft conductive outsole 60, which is a molded article having a relatively low hardness compared to the hard conductive outsole 50, is molded and manufactured, and the constant hard conductive outsole 50 and the soft conductive sole 60 are each made of a conductive adhesive 70. The hard conductive outsole 50 has a hardness in the range of 55 to 70, the soft conductive sole 60 has a hardness of 35 to 50, and the conductive adhesive 70 has a conductive carbon and a conductive polymer. It can be an acrylic adhesive or a polyurethane (PU) adhesive containing a conductive material such as a conductive surfactant, weight 2 to 10% by weight, and constitutes an insole and an outsole having a separated hardness As a result, it is possible to use a high-insole with a cushion, so that the operator can feel comfortable and work efficiency is increased, and since it is joined along the entire outsole-insole, the conductivity is very high, and any worker's worker posture is connected to the conductive mat. Continuous work is possible without fear of loss of properties.

Festival, work shoes

Description

Working shoes having the antistatic function

1 is an exemplary perspective view of a work shoe having a conventional antistatic function.

FIG. 2 is a perspective view of the bottom and part of a broken state of the shoe of FIG. 1; FIG.

3 is an exemplary perspective view of a work shoe having another conventional antistatic function.

4 is an exemplary perspective view of the work shoes having an antistatic function manufactured according to an embodiment of the present invention.

* Explanation of symbols for the main parts of the drawings *

S; Work shoes

50; Hard conductive outsole

60; Flexible conductive window

70; Conductive Adhesive

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to work shoes having an antistatic function, and more particularly, to various workplaces, particularly electronic components such as integrated circuits in which an end discharge of static electricity has a harmful effect on a product. The present invention relates to a configuration for imparting an antistatic function to work shoes for use in a manufacturing workshop of various products.

In semiconductor manufacturing sites such as integrated circuits, assembly sites of ultra-precision devices, and manufacturing sites for active and passive devices, static electricity causes serious problems that lower the yield of products.

Therefore, various wears having a function of excluding static electricity induced or accumulated in the body of the worker in the workplace are required, among which work shoes are formed on a conductive mat or conductive tile that connects the accumulated static electricity of the body with the earth ground. It has become an effective means of discharging.

Although work shoes having antistatic functions developed in view of the above point of view have been proposed in the related art, the proposed configuration had respective problems.

The work shoes S1 having the conventional antistatic function shown in FIGS. 1 and 2 are provided with a plurality of conductive pins 2 such as conductive metal materials extending downward from the inner sole portion 1 made of conventional resin or the like. The pin 2 extends to the relatively expensive conductive resin plates 10 and 11 attached to the surface of the outsole 5 integral with the insole 1 as shown in FIG. It is supposed to constitute.

This configuration is configured to conduct the electrical conduction between the soles of the body and the ground to the human body-conductive pins (2) -conductive resin plates (10,11) -ground (ground, conductive tiles, conductive mats). The constitution is provided with the conductive pins 2 so that the head 2 ′ of the conductive pins 2 protrudes away from the insole portion 1, which is an elastic cushion material, when used for a long time, so that the operator feels pain in the sole of the foot.

In addition, the more important problem is that when the worker is sitting in a chair or the like, the conductive resin plates 10 and 11 do not always sit so as to connect with the ground, and only the heel of the work shoes S1 is connected to the ground according to the posture of the worker. In some cases, there is a concern that a defect may occur, and problems such as fracture due to wear and bending of the conductive resin plates 10 and 11 occur.

FIG. 3 shows a work shoe S2 having a conventional antistatic function having a different configuration, in which both the outsole 20 and the insole 21 including the bottom portion of the work shoe S2 are integrally formed of a conductive resin or the like. Due to the nature of the resin of high hardness to maintain the, the weight is heavy and the cushion has a problem that the worker easily feels tired.

The work shoes having the antistatic function of the present invention eliminate the problems of the conventional configuration, and have a uniform thickness and high hardness to provide excellent abrasion resistance, as well as good cushioning, and provide a light work shoes without fatigue even when standing for a long time. .

In other words, by constructing the insole and the outsole of the hardness is separated, it is possible to use the insole with a high cushion, so that the operator can feel comfortable, the work efficiency is increased, and because it is joined along the entire outsole-insole, the conductivity is very high and any worker Even if the worker's position is connected to the conductive mat, it is possible to work continuously without losing the conductive property.

It is an object of the present invention to provide work shoes having a static elimination function that can be produced at a low price.

Work shoes having the antistatic function of the present invention for achieving the above object;

In the work shoes having an antistatic function for releasing the static electricity caused to the human body of the worker,

The work shoes are manufactured by separating the hard conductive outsole 50, which is a relatively high hardness molded body, and the soft conductive insole 60, which is a relatively low hardness molded body compared to the hard conductive outsole 50,

The hard conductive outsole 50 and the soft conductive sole 60 are basically formed by adhering with the conductive adhesive 70 along the connection surface and the connection boundary to form an adhesive line 75.

In addition, the hard conductive outsole 50 has a hardness in the range of 55 to 70, the soft conductive sole 60 is a hardness of 35 to 50,

The conductive adhesive 70 applied along the connection surface of the hard conductive outsole 50 and the soft conductive sole 60 and the adhesive line 75 may include a conductive material such as a conductive carbon, a conductive polymer, and a conductive surfactant. 10%, more preferably 4-8%, acrylic adhesive or polyurethane (PU) adhesive,

The hard conductive outsole 50 may include at least one of fibrous (PVC), ethylene vinyl acetate (EVA), and polyurethane (PU) containing 2-10% by weight of a conductive material such as conductive carbon, conductive polymer, and conductive surfactant. Is selected,

The soft conductive glazing 60 may include at least one of fibrous (PVC), ethylene vinyl acetate (EVA), and polyurethane (PU) containing 2-10% by weight of conductive materials such as conductive carbon, conductive polymer, and conductive surfactant. Selected as an additional constitutional feature.

The work shoes having the antistatic function of the present invention together with the accompanying drawings will be described in more detail.

4 is an exemplary perspective view of the work shoes having an antistatic function manufactured according to an embodiment of the present invention.

Work shoes (S) having the antistatic function of the present invention,

The outsole of the bottom of the work shoe is manufactured with a conductive material, and the inner sole of the work image surface part attached thereto is also manufactured by separating and manufacturing the conductive material having different properties, and bonding each of them with a conductive adhesive.

By doing so, the insole and the outsole have the desired physical properties and also ensure the conductivity between the insole and the outsole.

In more detail, the hard conductive outsole 50 and the soft conductive sole 60 of the work shoe S are molded and manufactured, and the hard conductive outsole 50 forms the soft conductive sole 60 by the conductive adhesive 70. It is made by bonding as.

Here, the term "hard and ductile" means a difference in the relative hardness of the materials constituting each of the hard conductive outsole 50 and the soft conductive flux window 60, and has the following effects.

Hereinafter, the configuration of the work shoes S having the antistatic function of the present invention together with a plurality of embodiments will be described in more detail.

Example 1

The hard conductive outsole 50 is injection molded by mixing 70% of the PVC resin, 25% of the plasticizer, and 5% of the conductive carbon to set the hardness to around 65.

In addition, the soft conductive glazing 60 is made of PVC resin 60%, plasticizer 25%, foaming agent 10%, conductive carbon 5% to increase the specific gravity of the foaming agent to give a cushion to the injection molding by setting the hardness to around 50 In preparation,

The hard conductive outsole 50 and the soft conductive sole 60 are made of a conductive adhesive 70 composed of a mixture of 95% acrylic adhesive and 5% conductive carbon.

By constructing in this way, the conductive conductive window 60-the conductive adhesive 70-the hard conductive outsole 50-which is in contact with the sole of the worker is configured to form a conductive path connected to the ground to continuously ground the static electricity accumulated by the worker's body. will be.

The conduction resistance of the manufactured work shoes (S) was 10E6Ω.

Example 2

The hard conductive outsole 50 is injection molded by mixing 90% ethylene vinyl acetate (EVA), 4% foaming agent, and 6% conductive polymer, and molded to hardness 60, and the soft conductive sole 60 is ethylene vinyl acetate (EVA) 85 %, A blowing agent 9%, and a conductive polymer 6% were mixed by injection molding to set a hardness of 40.

The hard conductive outsole 50 and the soft conductive sole 60 are mixed with 95% of a polyurethane (PU) adhesive and 5% of a conductive polymer to form a conductive adhesive (70).

The energization resistance value was 10E7Ω.

Example 3

The hard conductive outsole 50 is injection molded with 91% polyurethane (PU), 5% blowing agent, and 4% conductive polymer, and set to a hardness of 70,

The soft conductive glazing 60 is formed by injection molding with 90% of polyurethane (PU) and 10% of blowing agent, and then applying a surface treatment agent of 92% of polyurethane (PU) enamel resin and 8% of a conductive surfactant to form a coating layer. Could have done. The hardness was set to 45.

The hard conductive outsole 50 and the soft conductive sole 60 were adhered with a conductive adhesive 70 which is a mixture of 95% polyurethane (PU) adhesive and 5% conductive surfactant.

The energization resistance at this time was 10E7Ω.

Work shoes having the antistatic function of the present invention as described above can be used in the insole with a high cushion by configuring the insole and the outsole of the hardness compared to the conventional configuration and thus the operator can feel comfortable to increase the work efficiency.

In addition, since it is bonded along the entire outsole-insole, the conductivity is very high, and any worker's worker posture is connected to the conductive mat, so that the continuous work can be performed without fear of losing the conductive property.

Furthermore, by increasing the hardness of the outsole and separating it, it has advantages such as high wear resistance, high conductivity, and low cost production.

Claims (7)

In the work shoes having an antistatic function for releasing the static electricity caused to the human body of the worker, The working shoe is a hard conductive outsole 50, which is a molded body of a relatively high hardness, The flexible conductive sole 60, which is a molded article having a relatively low hardness as compared with the hard conductive outsole 50, is separated and manufactured. The hard conductive outsole 50 and the soft conductive sole 60 are bonded by a conductive adhesive 70 along the connection surface and the connection boundary, Work shoes having an antistatic function, characterized in that the current carrying resistance value during the energization test of the human body and the conductive bottom by wearing the work shoes is configured to a value of 10E6Ω-10E8Ω. delete The method of claim 1, The conductive adhesive 70 has an antistatic function, which may be an acrylic adhesive or a polyurethane (PU) adhesive containing 2-10% by weight of a conductive material consisting of a conductive carbon, a conductive polymer, and a conductive surfactant. Work shoes . The method of claim 1, The hard conductive outsole 50 includes one of fibrous (PVC), ethylene vinyl acetate (EVA), and polyurethane (PU) containing 2-10% by weight of a conductive material composed of a conductive carbon, a conductive polymer, and a conductive surfactant. Work shoes having a static eliminator, characterized in that selected above . The method of claim 1, The soft conductive glazing 60 includes a conductive material composed of conductive carbon, conductive polymer, and conductive surfactant in a weight of 2 to 10% by weight of PVC, ethylene vinyl acetate (EVA), and polyurethane (PU). Work shoes having an antistatic function, characterized in that one or more selected. The method according to claim 1 or 5, The flexible conductive insulator 60 is a conductive carbon and conductive polymer in a polyurethane enamel resin in a pure insole formed of fibrous (PVC), ethylene vinyl acetate (EVA), and polyurethane (PU) that do not contain a conductive material. , Work shoes having an antistatic function, characterized in that the surface may be coated and dried with a surface treatment agent containing a conductive material consisting of a conductive surfactant weight 2 to 10% by weight. delete

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