KR102207657B1 - Safety rubber gloves containing thermochromatic pigment - Google Patents

Abstract

The present invention relates to a safety rubber glove comprising a Zion pigment capable of rapidly detecting a temperature change by forming a color change layer containing a Zion pigment on the surface of the rubber glove. The present invention is a rubber glove having an opening formed in the wrist portion and molded into a hand shape, wherein the rubber glove comprises: (a) an outer layer comprising a Zion pigment; (b) a thermally conductive layer containing a carbon material; And (c) it provides a safety rubber glove comprising an inner layer having heat retention.

Description

Safety rubber gloves containing thermochromatic pigment

The present invention relates to a safety rubber glove containing a zion pigment, and more particularly, a safety rubber containing a zion pigment capable of rapidly detecting a temperature change by forming a color change layer containing a zion pigment on the surface of the rubber glove It's about gloves.

Zion pigment is a collective term for a pigment that changes color according to heat, and refers to a pigment that shows a certain color below the reference temperature, but changes color to a transparent color when the temperature rises. These Zion pigments are classified into reversible Zion pigments and irreversible Zion pigments depending on whether or not they return to their original color by a decrease in temperature, and in general, reversible Zion pigments are widely used. As the Zion pigment rises to a higher temperature, the more transparent it is, the color of the background is exposed to the entire surface, and the color changes. When a mixture of 2 or 3 types is used, it is possible to display a different color for each temperature section.

On the other hand, rubber gloves used to mean only gloves made of rubber, but nowadays they are used as a generic term for gloves made of polymer resin.

In general, rubber gloves are used for the purpose of preventing damage to the skin of the hand by blocking contact between the hand and the object, and are widely used to protect the hand in kitchens, laboratories, hospitals, and industrial sites. In the past, rubber gloves using natural latex were mainly used, but they have a characteristic odor, and because of the property that discoloration easily occurs, rubber gloves using nitrile (nitrile butadiene latex) are mainly used. However, most of the rubber gloves are merely protecting the hands, and some rubber gloves with thermal insulation properties are on the market. However, since they are only rubber gloves for insulation, their use in the field with high temperature or heat change is limited.

(0001) Korean Patent Registration No. 10-0769017 (0002) Korean Patent Registration No. 10-0655725

In order to solve the above-described problem, the present invention is to provide a safety rubber glove including a Zion pigment capable of rapidly detecting a temperature change by forming a color change layer including a Zion pigment on the surface of the rubber glove.

In order to solve the above-described problem, the present invention is a rubber glove having an opening formed in the wrist and molded into a hand shape, wherein the rubber glove comprises: (a) an outer layer including a Zion pigment; (b) a thermally conductive layer containing a carbon material; And (c) it provides a safety rubber glove comprising an inner layer having heat retention.

The inner surface of the outer layer is irradiated with plasma using a glow plasma device in an oxygen condition, and an epoxy resin-based adhesive may be applied.

The heat conductive layer may include a carbon nanotube and an adhesive material as a carbon material.

The Zion pigment may be composed of a first pigment having a color change range of 25 to 28 ℃, a second pigment having a color change range of 40 to 42 ℃, and a third pigment having a color change range of 65 to 67 ℃.

The outer layer and the inner layer may include natural latex, silicone resin, nitrile butadiene latex, or butyl rubber.

The present invention also provides a method for manufacturing the safety rubber gloves comprising the following steps.

(i) forming an outer layer by immersing a heated hand-shaped mold in a raw material containing Zion pigment; (ii) performing a surface treatment on the surface of the outer layer using a glow plasma device under oxygen conditions, and then applying an epoxy resin-based adhesive; (iii) forming a thermally conductive layer by spraying a composite material including carbon nanotubes on the surface of the surface-treated outer layer; (iv) attaching the outer layer, the heat conductive layer and the inner layer to each other by covering the surface of the heat conductive layer with an inner layer having heat retention, followed by curing and heat treatment with infrared rays; And (v) peeling off the rubber gloves after adhesion is completed, and completing the inner and outer sides by turning them over:

The safety rubber gloves according to the present invention can prevent heat damage due to temperature changes as the outer layer containing the Zion pigment changes color according to each temperature, and the entire rubber gloves are not only in contact with high temperatures but also by the heat conductive layer. Because the color of the product changes, it is possible to provide safety rubber gloves that can prevent damage to the hand due to heat as much as possible.

1 is a schematic view of a method of manufacturing a safety rubber glove according to an embodiment of the present invention.

Hereinafter, a preferred embodiment of the present invention will be described in detail. In describing the present invention, when it is determined that a detailed description of a related known technology may obscure the subject matter of the present invention, a detailed description thereof will be omitted. Throughout the specification, when a part "includes" a certain component, it means that other components may be further included rather than excluding other components, unless otherwise stated.

The present invention is intended to illustrate specific embodiments and to be described in detail in the detailed description, since various transformations can be applied and various embodiments can be provided. However, this is not intended to limit the present invention to a specific embodiment, it should be understood to include all conversions, equivalents, or substitutes included in the spirit and scope of the present invention.

The terms used in the present invention are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In the present invention, terms such as include or have are intended to designate the presence of features, numbers, steps, actions, components, parts, or a combination of them described in the specification, and one or more other features, numbers, and steps. It is to be understood that it does not preclude the possibility of the presence or addition of, operations, components, parts, or combinations thereof.

The present invention is a rubber glove having an opening formed in the wrist portion and molded into a hand shape, wherein the rubber glove comprises: (a) an outer layer comprising a Zion pigment; (b) a thermally conductive layer containing a carbon material; And (c) it relates to a safety rubber glove comprising an inner layer having heat retention.

The rubber gloves used in the present invention may have the shape of a general glove. That is, an opening is formed in the wrist so that the user's hand can be inserted, and a space in which five fingers and a palm can be inserted are arranged similar to the shape of the hand, so that the hand can be inserted and moved. In addition, the rubber gloves of the present invention can be manufactured for the left hand and the right hand respectively, but it is also possible to properly wear the left and right hands after being manufactured in the same shape due to the characteristics of the rubber gloves having high elasticity.

The outer layer may be made of natural latex, silicone resin, nitrile butadiene latex or butyl rubber as a layer containing a Zion pigment, and preferably may contain 1 to 5% by weight of a Zion pigment. In addition, since the Zion pigment becomes transparent at high temperatures, it is preferable to mix 1 to 5% by weight of a red pigment to have a red background color, which is often used as a high temperature warning color.

The Zion pigment used may be composed of a first pigment having a discoloration range of 25 to 28°C, a second pigment having a discoloration range of 40 to 42°C, and a third pigment having a discoloration range of 65 to 67°C. Zion pigments are generally discolored within a temperature range of 2 to 3°C, and pigments according to each temperature range and color are produced. In the present invention, a first pigment having a discoloration range of 25 to 28°C, which is a safe temperature for the human body, and a second pigment having a discoloration range of 40 to 42°C, which is a temperature that should be noted, may be burned. Phosphorus is preferably manufactured to give attention to each temperature by combining a third pigment having a discoloration range of 65 ~ 67 ℃. In addition, since the first to third pigments each have black, blue, and yellow colors, it is preferable to change to black at low temperature, green at 25°C or higher, orange at 40°C or higher, and red color at 65°C or higher. Although preferred, it is also possible to use a combination of different colors depending on the usage and use.

The inner surface of the outer layer is irradiated with plasma using a glow plasma device in an oxygen condition, and an epoxy resin-based adhesive may be applied.

Since the rubber used for the outer layer has a smooth surface, it is preferable to improve the adhesion between the surface and the adhesive by performing a certain surface treatment. Any process capable of improving the adhesion of the inner surface of the outer layer may be used without limitation, but a surface treatment process using plasma may be preferably used. It is preferable that the surface treatment process by plasma is performed using a glow plasma device under oxygen conditions. The plasma can be surface-treated using various gases, but it is preferable to perform the plasma in an oxygen condition having excellent surface etching power. In addition, it is more preferable to use a glow plasma device among plasma devices that are commercially available for the plasma device.

The epoxy resin-based adhesive is a material that primarily fixes the inner surface of the surface-treated outer layer and the thermally conductive layer, and it is preferable to use an epoxy resin-based adhesive that does not lose or separate adhesive strength due to elastic deformation of the rubber gloves after curing.

The thermally conductive layer may include a carbon nanotube and an infrared curable adhesive material as a carbon material. The carbon nanotube refers to a nano-thick tube made of carbon, and has very excellent properties of electrical conductivity and thermal conductivity in the longitudinal direction. By containing these carbon nanotubes in the heat conductive layer, discoloration proceeds not only to the area in contact with the heat source, but also to the periphery, so the contact with the heat source can be quickly detected and the temperature can be easily measured to minimize damage caused by heat. I can.

In addition, the carbon nanotubes may be mixed with an adhesive material to be used. When the adhesive material includes carbon nanotubes and irradiated with infrared rays, the carbon nanotubes may generate heat to be cured. Since carbon nanotubes have a fibrous structure, they have higher conductivity than existing carbon particles, and have high thermal conductivity due to their thinness and low thermal resistance compared to carbon fibers. In addition, when irradiating infrared rays, it is preferable to mix and use carbon nanofibers with an adhesive material, since it can easily generate heat and exhibit high efficiency. In addition, as the carbon nanofibers, carbon nanofibers having various shapes may be used depending on the manufacturing method and purpose, and the carbon nanofibers are single-walled carbon nanofibers, double-walled carbon nanofibers, multi-walled carbon nanofibers, carbon nanohorns, or It may be a mixture of these.

In addition, the adhesive material is preferably a thermosetting adhesive material so that it can be cured by the heat generated by the carbon nanotubes, and more preferably acrylic resin, urea resin, melamine resin, phenol resin, epoxy resin, unsaturated poly It may include ester resin, alkyd resin or urethane resin. In addition, in the case of the thermosetting material, it is preferable not to impair the elasticity of the rubber glove by using a material having a certain elasticity while being manufactured as a thin layer.

The infrared rays are irradiated to the carbon nanotubes and serve to thermally cure the adhesive material. The infrared ray can be used without limitation as long as it is a wavelength capable of generating heat from the carbon nanotubes, and can be freely selected and used according to the user's condition among far infrared rays, mid infrared rays, or near infrared rays. In addition, in the case of irradiation using a certain template or photomask during the infrared irradiation, since the adhesive material in the portion where the infrared ray is blocked is not cured, it is possible to form a heat conductive layer having a certain pattern inside the rubber glove.

The inner layer refers to the innermost layer that is in contact with a person's hand, and is manufactured to have a certain level of heat retention, so that damage due to heat can be minimized. That is, the safety rubber gloves of the present invention can protect hands due to the heat retention of the inner layer while the Zion pigment is discolored by external heat, so that hands can be kept away from the heat source without thermal damage.

The inner layer may include natural latex, silicone resin, nitrile butadiene latex, or butyl rubber. In the case of the inner layer, it is preferable to use a fabric having low thermal conductivity to have warmth, but the natural latex, silicone resin, nitrile butadiene latex or butyl rubber used for the outer layer also has low thermal conductivity, so the same component as the outer layer It has, and can be manufactured by increasing the thickness to increase heat retention.

The present invention also relates to a method of manufacturing the safety rubber gloves comprising the following steps (see Fig. 1).

(i) forming an outer layer by immersing a heated hand-shaped mold in a raw material containing Zion pigment; (ii) performing a surface treatment on the surface of the outer layer using a glow plasma device under oxygen conditions, and then applying an epoxy resin-based adhesive; (iii) forming a thermally conductive layer by spraying a composite material including carbon nanotubes on the surface of the surface-treated outer layer; (iv) covering the surface of the heat conductive layer with an inner layer having heat retention, followed by UV curing and heat treatment to bond the outer layer, the heat conductive layer, and the inner layer to each other; And (v) peeling off the rubber gloves after adhesion is completed, and completing the inner and outer sides by turning them over:

The step (i) is a step of forming an outer layer by immersing a heated hand-shaped mold in a raw material containing Zion pigment to form an outer layer on the innermost side, and then inverting it in the final step to complete the glove.

In the step (ii), the surface of the outer layer is subjected to surface treatment using a glow plasma device under oxygen conditions, and then an epoxy resin-based adhesive is applied. Plasma etching treatment on the surface of the outer layer is performed to achieve adhesion between the thermally conductive layer and the inner layer. It is a step to improve. The plasma device and surface treatment are as described above.

The step (iii) is a step of forming a thermal conductive layer by spraying a composite material containing carbon nanotubes on the surface of the surface-treated outer layer.The composite material containing carbon nanotubes can be attached to the surface of the outer layer through spray spraying. have. At this time, as described above, the outer layer surface treatment is performed to increase adhesion.

The step (iv) is a step of covering the inner layer having heat retention on the surface of the heat conductive layer, followed by UV curing and heat treatment to bond the outer layer, the heat conductive layer, and the inner layer to each other. Details are as described above.

The step (v) is a step of peeling off the rubber gloves after bonding is completed and turning the inner and outer sides over. In the present invention, since the outer layer is first formed on the mold, it is turned over to complete the gloves. In the case of the existing method, the inner layer is first formed on the mold and then simply stripped. However, in the present invention, the heat conductive layer must be adhered to the outer layer more closely than the inner layer, so the outer layer is formed and then the heat conductive layer is adhered to the outer layer. And, it is desirable to cover the inner layer at the end and make it upside down. Finally, the finished gloves can be turned over and made so that the outer layer is exposed to the outside to complete the safety rubber gloves.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings so that those of ordinary skill in the art can easily implement them. In addition, in describing the present invention, when it is determined that a detailed description of a related known function or a known configuration may unnecessarily obscure the subject matter of the present invention, a detailed description thereof will be omitted. In addition, certain features presented in the drawings are enlarged or reduced or simplified for ease of description, and the drawings and their components are not necessarily drawn to scale. However, those skilled in the art will readily understand these details.

Example 1

The outer layer was cured on the surface of the mold by immersing a hand-shaped mold heated at 80° C. for 1 minute in a first bath filled with a nitrile butadiene latex solution. At this time, the nitrile butadiene latex solution of the first bath contains 3% by weight of a red pigment, and the first pigment (black) having a color change range of 25 to 28°C, a material having a color change range of 40 to 42°C. 2 pigment (blue) and a third pigment (yellow) having a discoloration range of 65 to 67°C were mixed in the same amount, 5% by weight of Zion pigment was mixed and used.

The surface of the outer layer was surface-treated using the PLA-SMART Miniplasma, which is an atmospheric pressure glow plasma generator. At this time, the oxygen gas inflow rate was set to 100ml/min as the surface treatment condition, the treatment time was set to 60 seconds, and the plasma power was set to 60W.

After applying an epoxy resin to the surface of the surface-treated outer layer, the epoxy resin mixed with carbon nanotubes was spray-sprayed to attach carbon nanotubes to the surface of the outer layer to form a heat conductive layer.

Finally, the mold on which the thermally conductive layer was formed was immersed for 3 minutes in a second bath filled with nitrile butadiene latex solution to form an inner layer. After the outer layer was formed, infrared rays were irradiated for 10 minutes and heated at 80° C. for 10 minutes to finally cure and Adhesion was performed.

Thereafter, the rubber gloves were removed from the mold and then turned over so that the outer layer came out to the outside to complete the safety rubber gloves.

Example 2

Except that the carbon nanotubes were not used in Example 1, the same was carried out.

Example 3

It was carried out in the same manner as in Example 1 except that the inner layer was not formed.

Example 4

In Example 1, the Zion pigment was carried out in the same manner, except that 5% by weight of only the third pigment was used.

Example 5

It was carried out in the same manner as in Example 1 except that the plasma surface treatment of the outer layer was not performed.

Example 6

It was carried out in the same manner as in Example 1 except that the epoxy resin was not applied to the outer layer surface.

Experimental Example 1

After wearing the safety rubber gloves prepared in Examples 1 to 6, immerse the finger part for 10 seconds in water heated to 30°C, 45°C and 70°C, and the degree of discoloration and the discoloration width of the non-soaked part (additional discoloration Width) was confirmed and shown in Table 1 below.

30℃ 45℃ 70℃ Immersion part color Additional discoloration width Immersion part color Additional discoloration width Immersion part color Additional discoloration width Example 1 green 10 cm Orange 12 cm Red color 15 cm Example 2 green 1 cm Orange 1 cm Red color 2 cm Example 3 green 8 cm Orange 8 cm - - Example 4 Orange 11 cm Orange 12 cm Red color 14 cm Example 5 green 3 cm Orange 3 cm Red color 5 cm Example 6 green 4 cm Orange 5 cm Red color 5 cm

As shown in Table 1, in the case of Example 2 in which the carbon nanotube was not used, the additional discoloration width was very small, and it was confirmed that only the submerged part was discolored.

In the case of Example 3, as the inner layer was not formed, it was confirmed that the additional color change width was reduced, and the experiment was not conducted in order to protect the wearer's hand as the wearer felt hot in water at 70°C. That is, when the inner layer was not formed, it could be confirmed that the ability to protect the hands of the user was poor. In addition, when the rubber gloves were removed after use, the carbon nanotubes were smeared on the hand, and it could be confirmed that it looked black.

In the case of Example 4 using only the third pigment, the same discoloration as in Example 1 was shown in water at 70°C, but as the temperature of the water increased, the portion that was sequentially discolored did not appear, so that only the temperature of 65°C or higher was observed. Was manufactured.

In the case of Example 5 without plasma surface treatment and Example 5 without using an epoxy resin, it was confirmed that the discoloration width was reduced due to incomplete adhesion, and uniform discoloration was not performed and the amount of discoloration was different depending on the point. I could confirm that. In addition, it was confirmed that there was a problem in the use of the glove due to the occurrence of poor adhesion at the finger part and the separation of the inner layer and the outer layer when the glove was removed.

As described above, specific parts of the present invention have been described in detail, and it will be apparent to those of ordinary skill in the art that these specific techniques are only preferred embodiments, and the scope of the present invention is not limited thereby. will be. Therefore, it will be said that the substantial scope of the present invention is defined by the appended claims and their equivalents.

Claims (6)

In the rubber glove that has an opening formed in the wrist and is molded into a hand shape,
The rubber gloves are
(a) an outer layer containing Zion pigment;
(b) a thermally conductive layer containing a carbon material; And
(c) an inner layer having warmth;
Including,
The inner surface of the outer layer is irradiated with plasma using a glow plasma device under oxygen conditions, and an epoxy resin-based adhesive is applied,
The thermally conductive layer includes carbon nanotubes and adhesive materials as a carbon material,
The Zion pigment is a safety rubber, characterized in that it is composed of a first pigment having a color change range of 25 to 28 ℃, a second pigment having a color change range of 40 to 42 ℃, and a third pigment having a color change range of 65 to 67 ℃ Gloves.
delete delete delete The method of claim 1,
Safety rubber gloves, characterized in that the outer layer and the inner layer contain natural latex, silicone resin, nitrile butadiene latex or butyl rubber.
The manufacturing method of the safety rubber gloves of claim 1 comprising the following steps:
(i) forming an outer layer by immersing a heated hand-shaped mold in a raw material containing Zion pigment;
(ii) performing a surface treatment on the surface of the outer layer using a glow plasma device under oxygen conditions, and then applying an epoxy resin-based adhesive;
(iii) spraying a composite material including carbon nanotubes on the surface of the surface-treated outer layer to form a thermally conductive layer;
(iv) covering the surface of the thermally conductive layer with an inner layer having heat retention, followed by infrared curing and heat treatment to bond the outer layer, the thermally conductive layer and the inner layer to each other; And
(v) After bonding is completed, the rubber gloves are removed and the inside and outside are turned over to complete.

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