KR101933703B1 - Coil winding device - Google Patents

Abstract

The present invention relates to a coil winding device comprising: a coil supply unit for supplying coil; a roller unit for moving a coil supplied from the coil supply unit; a coil penetrating unit for setting a moving direction of the coil passed through the roller unit; an adjusting unit for adjusting a tension applied to the coil; and a rotating unit coupled with a voice coil-mounted jig and rotatably controlled, and having an end of the coil passing through the coil penetrating unit fixedly coupled to the jig.

Description

[Technical Field] The present invention relates to a coil winding device,

The present invention relates to a coil winding device capable of easily winding a coil.

As market demand grows, electronic devices such as portable audio, handheld computers, tablet computers, and cell phones are becoming increasingly thinner. Also, as the level of consumers increases, a high sound quality is required. That is, speakers of electronic devices such as portable audio, handheld computers, tablet computers, and mobile phones are required to evolve in a small, thin, high-quality direction, and their demands for acoustic performance are also increasing.

Voice coil is one of the important components of loudspeakers. When the alternating voice frequency current passes through the voice coil, the voice coil generates an alternating current according to the change of the voice frequency and cuts the magnetic line to generate mechanical vibration. It makes a sound by oscillating.

Conventionally, when manufacturing such a voice coil, the coil may be manually wound around the voice coil or wound through a machine. However, there is a problem that the coil is uniformly and tightly wound and the speaker performance is finally deteriorated.

On the other hand, Korean Patent Laid-open No. 10-2018-0042147 discloses related arts.

In order to solve the above problems, an embodiment of the present invention is to provide a coil winding device capable of preventing twisting of a coil and smoothly winding the coil to the voice coil.

It is another object of the present invention to provide a coil winding device capable of reducing a defective rate.

In order to solve the above-mentioned problems, one embodiment of the present invention is a coil supplying apparatus comprising: a coil supply unit for supplying a coil; A roller unit for moving a coil supplied from the coil supply unit; A coil penetrating portion for setting a moving direction of the coil passing through the roller portion; An adjusting unit for adjusting a tension applied to the coil; And a rotating portion to which a voice coil mounted jig is coupled and rotatably controlled, wherein an end of the coil passed through the coil penetrating portion is fixedly coupled to the jig, Can be smoothly wound on the voice coil.

According to an embodiment of the present invention, the jig includes: a cylindrical jig body; And a jig projection protruding from the inside of the jig body and having a diameter smaller than a diameter of the jig body, wherein the voice coil is inserted between the jig body and the jig projection, A protruding portion having an elastic material is formed, and the regulating portion includes a contact roller contacting the coil and applying tension to the coil; And an adjustment ring having a ring shape including the cavity such that the contact roller is rotatably mounted and the adjustable rotation axis is insertable, the adjustment ring further comprising a guide groove for guiding movement of the adjustment rotation axis , Wherein the adjustment ring linearly moves or rotates with respect to the adjustment rotation axis and the adjustment ring moves along the adjustment rotation axis direction in proportion to the angle of rotation of the rotation section, Can be smoothly wound on the voice coil.

One embodiment of the present invention has the effect of preventing the coil from twisting and allowing the coil to be wound smoothly on the voice coil.

Also, the embodiment of the present invention has an effect of reducing the defect rate.

1 is a schematic view of a coil winding apparatus according to an embodiment of the present invention.
FIG. 2 is a coupling diagram showing a coupling relationship between a jig and a rotation unit according to an embodiment of the present invention.
3 is a perspective view illustrating an adjusting unit according to an embodiment of the present invention.
FIG. 4 illustrates a support device capable of adjusting the position and angle of a coil supply unit according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the meantime, the structure of the apparatus described below is only for explaining the embodiment of the present invention, and is not intended to limit the scope of the present invention, and the same reference numerals used throughout the specification denote like elements.

A structure of a coil winding apparatus 100 according to an embodiment of the present invention will be described with reference to FIG.

The coil winding apparatus 100 includes a coil supply unit 110 for supplying a coil 111, a roller unit 120 for extending or moving the coil 111 supplied from the coil supply unit 110, a roller unit 120 A coil penetration portion 130 for setting a movement direction of one coil 111 and a control portion 152 for applying tension to the coil 111 passing through the coil penetration portion 130 and a coil 111 And a rotating device 150 including a rotating part 151 rotatably installed.

The coil supply unit 110 corresponds to a coil in which a coil 111 is wound a plurality of times on the body of the coil supply unit and a coil 111 is stacked to store a large amount of the coil 111.

The roller unit 120 is composed of a plurality of rollers. The roller portion 120 according to an embodiment of the present invention includes, but is not limited to, five rollers. The roller portion 120 is composed of two large rollers 123 and 125 and three small rollers 121, 122 and 124.

The plurality of rollers serve to increase the path of movement of the coil 111 so that the coil 111 is unfolded as long as possible in a narrow space. The small rollers 121, 122 and 124 are arranged so that the contact surface between the two large rollers 123 and 125 and the coil 111 is maximized.

As the coil 111 passes through the plurality of rollers, the curved portion is largely unfolded. Since the coil supply unit 110 has a structure in which the coil 111 is stacked on the narrow cylindrical body for storing a large amount of the coils 111, the coil 111 supplied from the coil supply unit 110 is directly supplied to the voice There is a high possibility that defects will occur when the coil is wound.

That is, the roller unit 120 including a plurality of rollers serves to unfold the bending coil 111 as much as possible and to reduce the defective rate of the coil 111 wound on the voice coil.

The coil 111 passing through the roller portion 120 is inserted into the coil penetration portion 130. The coil penetration part 130 includes an elongated tube, and the coil 111 is supplied to the rotating device 150 after passing through the elongated tube.

The coil penetration part 130 adjusts the direction of the outlet part of the elongated tube to adjust the direction in which the coil 111 is fed. When the operation of the rotating device 150 is stopped, the supply of the coil 111 is temporarily .

The operation of the rotating device 150 is performed through the control unit 154. The control unit 154 includes an input unit capable of controlling the operation of the rotating device 150 and information on the operation of the rotating device 150 may be displayed on the display 153. [

(Not shown) that moves in a direction perpendicular to the direction in which the coil 111 passes and applies a pressure to the coil 111 is provided inside the elongated tube. The pressure applying unit (not shown) is made of an elastic material and is a device for temporarily stopping the movement of the coil 111.

In order to prevent the coil 111 from being damaged, it is preferable that one surface of the pressure applying portion that contacts the coil 111 has a round continuous surface.

The coil 111 passing through the coil penetration part 130 is supplied to the rotation part 151 after passing through the adjustment part 152 of the rotation device 150.

The adjusting unit 152 adjusts the tension applied to the coil 111 and adjusts the position of the coil 111 supplied to the rotating unit 151. The adjusting unit 152 will be described later in detail .

The rotating part 151 will be described in detail with reference to FIG.

The rotary unit 151 has a structure in which the jig 160 to which the voice coil 170 is mounted is coupled and the jig 160 is rotated.

Specifically, the rotary unit 151 includes a rotary body 151a rotatably coupled to the rotary device 150, a jig insertion space 151c provided in the rotary body 151a and providing a space into which the jig 160 is inserted, And a rib 151b for preventing the jig 160 from sliding in the jig inserting space 151c when the rotation part 151 rotates.

The jig 160 includes a jig body 161 forming a body and having a cylindrical shape and a jig body 161 formed to protrude outward from the jig body 161 inside the jig body 161 and to have a diameter smaller than the diameter of the jig body 161 A groove 163 provided at an end of the jig projecting portion 162 and coupled with the rib 151b and a space formed between the jig body 161 and the jig projecting portion 162 and the voice coil 170 And a voice coil insertion port 164 for providing a space for inserting the voice coil.

The voice coil 170 has a cylindrical shape that can be inserted into the voice coil insertion port 164 and is formed on the inner circumferential surface of the voice coil 170 to prevent the voice coil 170 from slipping in the voice coil insertion port 164 when the jig 160 is inserted. And includes a plurality of protrusions 171.

The width of the voice coil 170 obtained by subtracting the height of the protrusion 171 is preferably smaller than the diameter of the jig projection 162 by a predetermined distance. This is because the voice coil 170 can be engaged with the jig 160.

At this time, the protrusion 170 should be made of a material or device having an elastic force.

The jig 160 is engaged with the rotation part 151 in a state where the voice coil 170 is inserted into the jig 160. [ Even when the voice coil 170 is inserted into the jig 160, the end of the jig protrusion 162 protrudes a predetermined distance from the end of the inserted jig 160. [ A protruding portion of the jig projection 162 at a predetermined distance is inserted into the jig insertion space 151c of the rotary part 151 and the rib 151b and the groove 163 are engaged with each other.

A plurality of ribs 151b and grooves 163 are provided in a paired state to prevent the jig 160 from slipping when the rotary part 151 is rotated and the coil 111 is fixed to the voice coil 170 In the case of FIG.

The end of the coil 111 passing through the coil penetration part 130 is fixedly coupled to the jig 160. Specifically, an end of the coil 111 is coupled to a coil fixing portion 165 provided on an outer circumferential surface of the jig body 161.

The rotating portion 151 is rotated in a state where the coil 111 is coupled to the coil fixing portion 165 so that the coil 111 is wound on the voice coil 170.

In an embodiment of the present invention, the coil fixing portion 165 corresponds to a protruded screw shape, and a method of binding the coil 111 to the coil fixing portion 165 is used. However, the coil fixing portion 165 may be a clamping type so as to pick up the end of the coil 111. Alternatively, the coil may be fixed by a method of screwing the coil 111 and pressing the end of the coil 111.

FIG. 3 shows an embodiment of the present invention for the regulator 152. FIG.

The adjustment portion 152 is provided with a contact roller 152a which directly contacts the coil 111 and applies tension to the coil 111 and a contact roller 152b which is rotatably mounted on the contact roller 152a and in which the adjustment rotation axis 152c can be inserted And includes a ring-shaped adjustment ring 152b including a cavity.

The center axis of the contact roller 152a is movably inserted into the cavity of the adjustment ring 152b, and specifically inserted in the longitudinal direction of the adjustment ring 152b.

The adjustment rotary shaft 152c is also movably inserted into the cavity of the adjustment ring 152b, and specifically inserted in the longitudinal direction of the adjustment ring 152b.

The inner surface of the cavity of the adjustment ring 152b is further provided with a guide groove 152d and the contact roller 152a and the adjustment rotation axis 152c are provided movably along the guide groove 152d.

The adjustment rotary shaft 152c is adjustable in the axial direction. Specifically, the rotation shaft 152c may be configured to be pulled out or inserted into a body part (not shown) of the rotating device 150 connected to the adjustment rotation shaft 152c, and the adjustment rotation axis 152c itself may be adjustable in length.

In another embodiment, the adjustment ring 152b may be movably provided along the longitudinal direction of the adjustment rotation shaft 152c.

The feature that the adjustment rotary shaft 152c is provided to be able to be drawn out or inserted into the body portion (not shown) or the adjustment ring 152b is movably provided along the longitudinal direction of the adjustment rotary shaft 152c is a feature that the voice coil 170 The coil 111 is stacked to prevent the voice coil 170 from winding when the coil 111 is wound. That is, the adjustment rotary shaft 152c or the adjustment ring 152b moves in proportion to the rotation time of the rotary part 151. [

On the other hand, the adjustment ring 152b is rotatably provided with respect to the adjustment rotary shaft 152c. The amount of tension applied to the coil 111 by the contact roller 152a varies as the adjustment ring 152b is rotated or linearly moved relative to the adjustment rotation shaft 152c.

The coil 111 is tensioned by applying the tension to the coil 111 by the contact roller 152a and finally the coil 111 can be wound smoothly on the voice coil 170. [

In an embodiment of the present invention, the coil 111 is described by way of example, but the present invention is not limited thereto, and any configuration may be employed as long as it has a shape that is long in the longitudinal direction, such as a thread or a string.

4 is a perspective view of the coil supply unit 110 or the supply unit 110 'which supports the lower end of the supply unit 110' in which the coil supply unit 110 or the yarn, electric wire or string is wound and adjusts the height and direction of the coil supply unit 110 or the supply unit 110 ' The support device 200 is shown.

4, the coil supply unit 110 or the supply unit 110 'has a columnar shape through which a central portion can pass.

The support device 200 according to FIG. 4 includes a support 210 for supporting the center of the coil supply part 110 or the supply part 110 ', a hinge part 220 connected to the lower end of the support 210, A rotation plate 230 connected to the lower end of the rotation plate 220 and a height adjustment unit 240 provided at the lower end of the rotation plate 230.

The support base 210 includes a support base body 211 constituting the body, a button portion 212 provided to be inserted into and withdrawn from the upper end of the support base body 211, A plurality of ball bearings 213 contacting the ball bearings 212 and an inclined surface 215 provided inside the support body 211 and supporting the lower ends of the plurality of ball bearings 213 and having an inclined angle, 212 for guiding the insertion and withdrawal of the guidewire 214.

The support body 211 is composed of a ground body parallel to the ground and a height body protruding in the height direction from the ground body. The support body 211 includes a button portion 212, a plurality of ball bearings 213, a slope 215, (214) is provided on the height body.

One end of the button portion 212 is inserted and withdrawn into the support body 211 and the other end of the button portion 212 is provided so as to be able to apply pressure in the one end direction. Therefore, the other end of the button portion is wider than the one end of the button portion. The side surface of the button portion 212 forms a continuous surface from one end to the other end. For example, the button portion 212 may have a conical shape.

The other end of the button portion 212 may be made of an elastic material so that a user can easily apply pressure.

The plurality of ball bearings 213 maintain contact with the peripheral portion of one end of the button portion 212. This is because the plurality of ball bearings 213 are placed on the inclined surfaces 215, respectively. The inclined surface 215 has the lowest height of the central portion of the support body 211 and a higher height toward the outer peripheral surface of the support body 211 at the central portion. Accordingly, the plurality of ball bearings 213 are subjected to the force of gravity toward the center of the support body 211.

Meanwhile, when pressure is applied to the other end of the button portion 212, the button portion 212 is inserted into the support body 211 in the one end direction. The sectional area increases from the one end of the button portion 212 toward the other end of the button portion 212 so that the ball bearing 213 which has been in contact with the button portion 212 is gradually pushed to the outer peripheral surface of the support body 211.

Therefore, the ball bearing 213 protrudes from the outer circumferential surface of the support body 211 by a predetermined amount. The protruded ball bearings 213 may be in contact with the inner circumferential surface of the center of the coil supply part 110 or the supply part 110 '.

The coil supply part 110 or the supply part 110 'can be prevented from moving in a direction parallel to the ground due to the contact between the protruded ball bearing 213 and the central part of the coil supply part 110 or the supply part 110' have. Further, since the protruded ball bearings 213 are rotatable, the coil supply unit 110 or the supply unit 110 'can rotate without vibration in a direction parallel to the ground. Therefore, there is an effect that the wire wound around the coil supply part 110 or the coil 110 or the supply part 110 'can be loosened smoothly.

If the button portion 212 is further pressed toward one end in order to prevent the rotation of the coil supplying portion 110 or the supplying portion 110 'as necessary, the rotation of the coil supplying portion 110 or the supplying portion 110' Can be prevented.

The hinge part 220 includes a rotating hinge connecting two plates and two plates, and can adjust a direction in which the coil supplying part 110 or the upper part of the supplying part 110 'is directed. The support base 210 connected to any one of the plates according to the rotation of the rotation hinge may have an angle with respect to the ground.

A rotation plate 230 is provided at the lower end of the hinge unit 220. The rotation plate 230 has a plate shape that is rotatable on the driving unit 231 and has an effect of rotating the hinge unit 220 by 360 degrees.

The driving unit 231 may be manual or electronic.

A height adjustment unit 240 is provided at a lower end of the rotation plate 230. The height adjuster 240 according to an embodiment of the present invention uses a hydraulic cylinder, but is not limited thereto.

On the other hand, the coil winding apparatus 100 can be used together with the winding roller support apparatus 200. [ Further, only the coil winding apparatus 100 may be used alone, and only the winding roller supporting apparatus 200 may be used alone.

Further, the coil winding apparatus 100 may include a winding roller support apparatus 200. [

Meanwhile, the roller unit 120, the coil penetration unit 130, the contact roller 152a, the adjustment rotation shaft 152c, the guide groove 152d, the rotation unit 151, the jig 160, the button unit 212, 214, and the surface of the inclined surface 215 can be damaged by friction or impact. Therefore, in the case of the surfaces of the structures, the plastic composition may be formed as follows.

The plastic composition according to one embodiment of the present invention includes polypropylene resin, high density polyethylene resin (HDPE), talc and germanium powder. The present invention relates to a plastic sheet capable of improving mechanical properties such as heat resistance and durability and capable of improving the twisting phenomenon and promoting metabolism by radiating far infrared rays and improving the storage stability of foods stored in the manufactured plastic container, (Product) can be produced.

Polypropylene resin is a thermoplastic resin which is obtained by polymerization of propylene and is known as an environmentally friendly material which is inexpensive in performance and does not have a risk of being in contact with the contents of foods or cosmetics. The polypropylene resin is excellent in chemical resistance, mechanical properties , And excellent in thermal properties. The polypropylene may use at least one selected from a propylene homopolymer, a random copolymer and a block copolymer, but a homopolymer and a random copolymer are mixed in a weight ratio of 3: 2 to improve mechanical properties .

High-density polyethylene (HDPE) resin is a synthetic resin produced by polymerizing ethylene, and has excellent flowability, rigidity, impact resistance, electrical insulation, moldability, and cold resistance. The high-density polyethylene resin may be mixed with the above-mentioned polypropylene resin to improve the moldability by reinforcing the tensile force in the production of the plastic sheet or the product, and a variety of known products may be used.

The talc improves the mechanical properties such as the strength and heat resistance of the plastic composition, and it is preferable to use a talc powder having a particle size of 150 to 200 mesh for mixing with polypropylene resin or the like. The talc may be used in admixture with other filler components, and may preferably be mixed with the dolomite powder at a weight ratio of 1: 1 to contribute to improvement of the durability of the plastic composition.

Germanium is a silvery white metal, which has the effect of promoting metabolism by emitting a large amount of far infrared rays and anions which are beneficial to the human body. Also, due to its semiconducting nature, germanium has a function of increasing the vitality of germanium ions (outer electrons) when they come into contact with the skin. When entering the body, it is released out of the body within 20 ~ 30 hours with various harmful substances, so there is no poisoning or side effects at all. Particularly, when the particles of inorganic germanium come into contact with human skin, semiconductor properties are introduced into the skin tissue by the osmotic action of the outer electron. It has been found that germanium, which penetrates into capillaries in subcutaneous tissues, moves electrons in the blood vessels through the blood vessel walls, performs blood purification, normalizes blood, and discharges excess electron flow to relieve pain. The germanium can be used in the form of powder. It is preferable that the germanium ore is finely cut to 3 cm or less and then the cut germanium ore is pulverized to a particle size of 80 to 100 mesh.

In one embodiment, the plastic composition preferably comprises 110 to 130 parts by weight of high density polyethylene resin, 170 to 190 parts by weight of talc, and 1 to 10 parts by weight of germanium powder per 100 parts by weight of the polypropylene resin. When the plastic sheet is produced by using the plastic composition, it is important to control the specific gravity of the plastic composition in order to eliminate the twisting phenomenon. The specific gravity is preferably 1.02 to 1.10, more preferably 1.03 to 1.05. That is, when the content of the high-density polyethylene resin is less than 110 parts by weight or the talc is less than 170 parts by weight based on 100 parts by weight of the polypropylene resin, mechanical properties such as durability and the like are limited. Is more than 130 parts by weight or the talc is more than 190 parts by weight, there is a possibility that the specific gravity of the plastic composition is increased and the moldability may be deteriorated. If the amount of the germanium powder is less than 1 part by weight with respect to 100 parts by weight of the polypropylene resin, far infrared rays emission effect due to germanium is difficult to manifest. If the amount is more than 10 parts by weight, .

In one embodiment, the plastic composition described above may comprise glass fiber reinforced plastic to enhance impact resistance. Fiberglass Reinforced Plastic (FRP) is a material made mainly of glass-based minerals and a combination of glass-based minerals with aromatic nylon fibers and thermosetting resins. The glass-based mineral may be at least one selected from the group consisting of silica sand, limestone, feldspar, and soda ash, but is not limited thereto. As the thermosetting resin, various known thermosetting resins can be used, and preferably, a polyester or an epoxy resin can be used. Glass fiber reinforced plastics can be produced by mixing materials such as glass-based minerals and putting them in a melting furnace. Each air layer sealed between the glass fibers functions as a heat insulating layer, so that it is excellent in nonflammability, sound absorption properties and workability. It is also stronger than iron, lighter than aluminum, and does not rust. Also, it is excellent in nonflammability and is not deformed by heat and is easy to be processed. At this time, it is preferable to add glue to improve the mixing property with glass fiber reinforced plastic (pellet type) and PVC. Glue is a substance that solidifies the liquid of organs such as animal's skin, intestines, bones, etc., and can solve the problems such as the release of environmental hormones while improving the binding force of each component. The glass fiber reinforced plastic and the glue are preferably contained in an amount of 15 to 25 parts by weight and 2 to 7 parts by weight based on 100 parts by weight of the polypropylene resin. If the amount is less than the above range, the impact resistance strengthening and embossing may be deteriorated, and if it exceeds the above range, a cracking phenomenon may occur during production of the product, which is uneconomical.

In one embodiment, a plastic composition may be used to contain cork powder to improve the elasticity of the product during its production. The cork powder can be prepared by removing the shell of oak oak and then crushing it. For the cork powder to be mixed with polypropylene resin or the like, it is preferable to use fine pulverized particles which are sieved through a mesh of 400 mesh or more. The cork powder is preferably contained in an amount of 5 to 10 parts by weight based on 100 parts by weight of the polypropylene resin. When the cork powder is less than 5 parts by weight, the degree of improvement of the elasticity is insignificant. When the cork powder is more than 10 parts by weight, voids formed in the inside of the product during manufacture may be increased and durability may be weakened.

In order to improve the mixing property of the cork powder and the other ingredients, sucrose (C ₁₂ H ₂₂ O ₁₁ ) powder may be further added. The sucrose not only smoothes the pores formed between the cork powder, but also tends to become viscous during the mixing process with the PVC, so that it can catch the molecules that cause the problem of bad odor, which can contribute to solving the problem of bad odor. The sucrose is preferably a powder that has been passed through a 500-mesh net, and is preferably contained in an amount of 1 to 4 parts by weight based on 100 parts by weight of the polypropylene resin. When sucrose is less than 1 part by weight, the effect expressed by sucrose is insignificant. When the amount of sucrose is more than 4 parts by weight, it is not only economical but also may weaken the mechanical properties of the product.

In one embodiment, the plastic composition may comprise a white powder. Potassium alum (potassium aluminum sulfate, AlK (SO ₄ ) ₂ .12H ₂ O) can be used as the alum, and can be obtained from natural alum. Concretely, it can be produced by dissolving alunculus in water and filtering it, then breaking it, and cooling it if irregularly shaped crystals are formed. It is preferable that the alum is contained in an amount of 2 to 5 parts by weight based on 100 parts by weight of the polypropylene resin. When the content of alum is less than 2 parts by weight, the effect by alum is insignificant, and when it is more than 5 parts by weight, it is uneconomical.

In one embodiment, the present invention may include Boehmite (AlO (OH) 2) to improve antibacterial properties. Boehmite can be any of γ-boehmite, α-boehmite and pseudo-boehmite. Of these, γ-boehmite excellent in crystallinity and excellent in thermal stability and chemical stability, structurally neutral, and excellent in antibacterial property is preferably used. The γ-boehmite can be prepared by supercritical synthesis of only water (pure water) and aluminum (Al). The boehmite is preferably contained in an amount of 3 to 8 parts by weight based on 100 parts by weight of the polypropylene resin. If the content of boehmite is less than 3 parts by weight, it is difficult to exhibit an antimicrobial effect to be achieved. If the content is more than 8 parts by weight, there is a fear that mixing property with other components is impaired.

Hereinafter, the structure and effects of the present invention will be described in more detail with reference to specific examples and comparative examples. However, this embodiment is intended to explain the present invention more specifically, and the scope of the present invention is not limited to these embodiments.

[Example 1]

180 kg of polypropylene resin, 200 kg of high density polyethylene resin (HDPE), 310 kg of talc and 15 kg of germanium powder were mixed to prepare a plastic composition.

[Example 2]

And 36 kg of glass fiber reinforced plastic and 9 kg of glue were further mixed to prepare a plastic composition.

[Example 3]

9 kg of cork powder, 5 kg of sucrose powder, 5 kg of white powder, and 9 kg of gamma-boehmite were further mixed to prepare a plastic composition.

[Comparative Example]

Was prepared in the same manner as in Example 1, except for talc, and this was used as a comparative example.

[Experimental Example 1: Evaluation of impact resistance]

Specimens (20 cm * 30 cm, thickness 20 mm) were prepared using the plastic compositions of the examples and comparative examples, and 3 kg of weight was dropped at a height of 2 m, and the degree of breakage of each specimen was measured. .

[Table 1]

As can be seen from the above Table 2, it was found that the embodiments including talc are superior in impact resistance to the comparative examples that do not include talc. In particular, in Examples 2 and 3 containing glass fiber reinforced plastics, the best results were obtained.

[Experimental Example 2: Evaluation of heat resistance]

The specimen of Experimental Example 1 was heated for 3 hours in a hot air circulating heating furnace maintained at 80 캜, and yellowing degree was visually observed. The results are shown in Table 3 below.

[Table 3]

As can be seen from the above Table 3, in the Examples, yellowing portions were hardly observed unlike the Comparative Examples. As a result, it was found that the heat resistance of the example was very excellent as compared with the comparative example.

[Experimental Example 3: Evaluation of antimicrobial activity]

The antibacterial activity test (JIS Z 2801) was carried out for Example 1, Example 3 and Comparative Example. Aspergillus niger ATCC 9642 (fungus) was used as the test strain, and the antibacterial activity (antibacterial activity value) was evaluated and shown in Table 4 below.

[Table 4]

The antimicrobial activity value refers to a value obtained by evaluating the degree of antimicrobial activity by comparing the number of strains cultured for a certain period of time. When the value is 1 or more, 90% or more of the strains are present, 2 or more are 99% , More than 99.99% of the strain is over 4, and more than 5 is more than 99.999% of the strain is killed.

As can be seen from the above Table 4, it was predicted that the antibacterial activity of Example 3 containing γ-boehmite was much better than those of other cases.

The hinge portion 220 is disposed between the coil fixing portion 165 and the jig body 161, between the support body 211 and the hinge portion 220, between the adjusting rotation shaft 152c and the body portion of the rotating device 150, And the rotation plate 230 and between the rotation plate 230 and the height adjuster 250 may be adhered with an adhesive composition. The adhesive composition will be described as follows.

The adhesive composition according to one embodiment of the present invention is an adhesive composition comprising a base and a curing agent, wherein the base is composed of 30 to 90 parts by weight of an ethylene vinyl acetate (EVA) resin, 1 to 30 parts by weight of polyvinyl alcohol (PVA) 10 to 30 parts by weight of water, 5 to 30 parts by weight of calcium carbonate, 0.1 to 1 part by weight of a surfactant and 1 to 20 parts by weight of a thixotropic agent, and the curing agent includes an isocyanate compound. The present invention relates to a water-soluble two-component adhesive composition comprising a subject and a curing agent, which can be applied and cured to produce an adhesive sheet or an adhesive, and is excellent in physical properties such as adhesiveness and heat resistance, Inorganic board such as wood board or magnesium board, and PVC sheet.

The subject basically comprises an ethylene vinyl acetate (EVA) resin, polyvinyl alcohol (PVA), water, calcium carbonate, a surfactant and a thixotropic agent, the ethylene vinyl acetate resin being the main component of the subject, The strength of the adhesive sheet or the adhesive can be kept constant. Conventionally, an epoxy resin is used as a main component of an adhesive sheet or an adhesive. However, in the case of an adhesive sheet or an adhesive using an epoxy resin, volatile organic compounds such as benzene toluene are released to adversely affect the environment and human body. However, the present invention has solved the problems such as environmental problems by excluding the epoxy resin.

Polyvinyl alcohol (PVA) plays a role in improving the heat resistance, water resistance and adhesiveness of an adhesive sheet or adhesive to be produced. The polyvinyl alcohol is preferably contained in an amount of 1 to 30 parts by weight based on 30 to 90 parts by weight of the ethylene vinyl acetate resin. When the amount of the polyvinyl alcohol is less than 1 part by weight, it is difficult to improve the heat resistance or the like, and when it exceeds 30 parts by weight, the relative content of ethylene vinyl acetate is decreased, so that the cohesive force of the adhesive sheet or the adhesive may be weakened. In addition, when the present invention is used in an ondol floor or the like, antimony oxide and zirconium oxide may be used together with polyvinyl alcohol in order to supplement the functionality of polyvinyl alcohol. Antimony oxide and zirconium oxide may enhance the heat resistance of the adhesive sheet or adhesive to be produced, and they are preferably contained in an amount of 5 to 10 parts by weight based on 30 to 90 parts by weight of the ethylene vinyl acetate resin. Below this range, the effect of improving the heat resistance is insignificant, and when it exceeds the above range, it is not economical.

Water is used as the solvent of the subject. Unlike conventional adhesive sheets or adhesives, the present invention has the effect of solving environmental pollution problems because volatile organic solvents are not used. The water is preferably contained in an amount of 10 to 30 parts by weight based on 30 to 90 parts by weight of the ethylene vinyl acetate resin. If the amount of water is less than 10 parts by weight, the ethylene vinyl acetate resin or the like can not be effectively dissolved, and if it exceeds 30 parts by weight, the water may become too thin to lower the strength of the adhesive sheet or the adhesive.

Calcium carbonate controls the viscosity of the adhesive composition and reduces shrinkage during curing. The calcium carbonate is preferably contained in an amount of 5 to 30 parts by weight based on 30 to 90 parts by weight of the ethylene vinyl acetate (EVA) resin. When the amount of calcium carbonate is less than 5 parts by weight, sufficient shrinkage does not occur during curing, and the hardness of the adhesive sheet or adhesive may become poor. When the amount exceeds 30 parts by weight, the viscosity may become too tight and productivity may be deteriorated. In addition, the present invention may use various materials such as wormwoods and clays to replace calcium carbonate. For example, dolomite and / or talc may be used. At this time, it is preferable to mix dolomite and talc in a weight ratio of 1: 1 in order to improve mechanical properties. It is also preferable that the powder has a particle size of 150 to 200 mesh. When the powder is used to have a particle size of 150 to 200 mesh, it is mixed with other components such as ethylene vinyl acetate resin Can be improved.

The surfactant is used to reduce the surface tension when mixing the adhesive composition and to improve the application property. The surfactant is preferably contained in an amount of 0.1 to 1 part by weight based on 30 to 90 parts by weight of the ethylene vinyl acetate resin. As the surfactant, known nonionic surfactants and anionic surfactants can be used, but in order to effectively reduce the surface tension, it is preferable to use a gemini type sulfonic acid type surfactant containing an alkyl chain of 8 to 14 carbon atoms.

The thixotropic agent is to prevent the adhesive composition from flowing down by suppressing the separation phenomenon between the subject and the curing agent when the adhesive composition is applied to the adhesive sheet or the adhesive, and various known various substances such as silica, acryl copolymer and the like But it is preferable to use a clay. Clay is an aggregate of fine hydrated silicate minerals. It refers to a material that is mixed with water in an appropriate amount to produce plasticity when kneaded, rigidity when dried, and sintered when baked at high temperature. Specifically, at least one powder selected from the group consisting of kaolinite, fumed silica and bentonite may be used, but in order to obtain the best effect, it is preferable to use a mixture of fumed silica and bentonite in a weight ratio of 1: 1. The thixotropic agent is preferably contained in an amount of 1 to 20 parts by weight based on 30 to 90 parts by weight of the ethylene vinyl acetate resin. If the thixotropic imparting agent is less than 1 part by weight, the flowability can not be controlled sufficiently, and if the thixotropic imparting agent is more than 20 parts by weight, the flowability is excessively vanished and the productivity may be lowered.

In addition, the subject may further include sodium silicate to improve the adhesive strength of the adhesive sheet or adhesive to be produced. Unlike conventional adhesives, sodium silicate does not cause pollution and is environmentally friendly and has excellent adhesion. The sodium silicate is preferably contained in an amount of 3 to 7 parts by weight based on 30 to 90 parts by weight of the ethylene vinyl acetate resin based on the solid content. When the amount of sodium silicate is less than 3 parts by weight, the degree of improvement of the adhesion performance is insignificant. When the amount is more than 7 parts by weight, miscibility with other components may be deteriorated.

The subject may further include molybdenum disulfide to improve the abrasion resistance of the adhesive sheet or adhesive to be produced. Molybdenum disulfide (MoS ₂ ) is found in thin veins in minerals and is mined and used as a lubricant. Molybdenum disulfide (MoS ₂ ) has inherent properties of a hexagonal crystal structure in which shear is likely to occur, such as graphite, but the lubricating action is superior to that of graphite. The molybdenum disulfide is preferably contained in an amount of 1 to 5 parts by weight based on 30 to 90 parts by weight of the ethylene vinyl acetate resin based on the solid content. When the amount of the molybdenum disulfide is less than 1 part by weight, the abrasion resistance can not be improved effectively, and when it exceeds 5 parts by weight, the adhesion strength may be deteriorated. At this time, copper powder may be mixed with molybdenum disulfide.

The subject may further include a flame retardant agent to improve the flame retardancy of the adhesive sheet or adhesive to be produced. The flame retardant is preferably contained in an amount of 1 to 5 parts by weight based on 100 parts by weight of the ethylene vinyl acetate resin. When the amount of the flame retardant is less than 1 part by weight, the degree of improvement of the flame retardancy is insignificant. When the amount is more than 5 parts by weight, the flame retardant agent is not only economical but also has poor compatibility with other components. The flame retardant may be a white powder. Potassium alum (potassium aluminum sulfate, AlK (SO ₄ ) ₂ .12H ₂ O) can be used as the alum, and can be obtained from natural alum. Concretely, it can be produced by dissolving alunculus in water and filtering it, then breaking it, and cooling it if irregularly shaped crystals are formed.

In addition, the subject may further include aluminum hydroxide to improve the antimicrobial properties of the adhesive sheet or adhesive to be produced. It is preferable to use boehmite (AlOH (OH)) as the aluminum hydroxide. Boehmite can be any of γ-boehmite, α-boehmite and pseudo-boehmite. Of these, γ-boehmite excellent in crystallinity and excellent in thermal stability and chemical stability, structurally neutral, and excellent in antibacterial property is preferably used. The γ-boehmite can be prepared by supercritical synthesis of only water (pure water) and aluminum (Al). The aluminum hydroxide is preferably contained in an amount of 5 to 10 parts by weight based on 30 to 90 parts by weight of ethylene vinyl acetate. If the content of aluminum hydroxide is less than 5 parts by weight, it is difficult to exhibit the antimicrobial effect to be achieved. If the content is more than 10 parts by weight, the compatibility with other components may be impaired.

As the curing agent, those containing an isocyanate compound can be used. The isocyanate compound has excellent solubility in water, and the curing agent can be uniformly mixed on the subject to maintain proper viscosity and hardness, thereby shortening the curing time and prolonging the pot life when mixing the curing agent and the curing agent, . The isocyanate compound is preferably a compound containing two or more isocyanate groups in one molecule, and is preferably a compound containing at least two isocyanate groups in a molecule, such as toluene-diisocyanate (TDI), hydrogenated TDI, trimethyl propane- Triisocyanate (TTI), diphenylmethane-4,4-diisocyanoate (MDI), hydrogenated MDI, or hexamethylene-diisocyanate (HDI) Is preferably used. The curing agent is preferably contained in an amount of 1 to 20 parts by weight based on 100 parts by weight of the subject.

The above-mentioned adhesive sheet or adhesive is prepared by preparing a water-soluble two-component adhesive composition by mixing a subject and a curing agent, and then applying and curing the adhesive composition to a work site. If necessary, And may further include a dispersant, an antifoaming agent, an antiseptic agent, a thickener, and the like within the range not impairing the object of the present invention, and may further include a coloring component to realize various colors of the adhesive sheet or adhesive to be produced have.

Hereinafter, the structure and effects of the present invention will be described in more detail with reference to specific examples and comparative examples. However, this embodiment is intended to explain the present invention more specifically, and the scope of the present invention is not limited to these embodiments.

[Example 1]

80 parts by weight of ethylene vinyl acetate, 20 parts by weight of polyvinyl alcohol, 25 parts by weight of water, 10 parts by weight of calcium carbonate, 1 part by weight of a surfactant and 5 parts by weight of a thixotropic agent were mixed to prepare a subject. Toluene-diisocyanate and 25 parts by weight of a curing agent containing toluene-diisocyanate (TDI) were mixed and cured to prepare an adhesive sheet or an adhesive.

At this time, a gemini surfactant having 8 carbon atoms was used as a surfactant. The overall process of synthesis of the surfactant started with the reaction of diamine with 1-bromoalkane. 0.1 mole of N, N, N ', N'-tetramethyl-1,3-diaminopropane (N, N', N'- -bromooctane) was added to 300 g of acetonitrile and stirred for 30 minutes. The solution was refluxed at 353 K for 12 hours, and then the acetonitrile solvent was removed using a rotary evaporator. 500 g of diethylether was added to the resulting product to recrystallize the product. After filtering, it was washed with 500 g of diethyl ether and unreacted impurities were removed. The product thus obtained was treated in a 323 K vacuum oven for 12 hours to remove residual solvent to prepare a gemini surfactant.

[Example 2]

Except that 5 parts by weight of atomium oxide and 5 parts by weight of zirconium oxide were further added in the form of powder in the same manner as in Example 1,

[Example 3]

Except that 5 parts by weight of sodium silicate, 3 parts by weight of molybdenum disulfide, 3 parts by weight of alumina and 8 parts by weight of? -Behohexite were further added in powder form to the subject, and this was prepared in the same manner as in Example 3 Respectively.

[Comparative Example]

A comparative epoxy epoxy flooring adhesive (SEP-4300, manufactured by Samchang Chemical Co., Ltd.) was used as a comparative example.

[Experimental Example 1: Adhesion Test]

An adhesive strength test (KS F 4715) was carried out for Examples and Comparative Examples, and the results are summarized in Table 1 below.

[Table 1]

The adhesion strength of LH construction was 0.8 N / mm < 2 > or more, and both the examples and the comparative examples satisfied the acceptance criteria. However, it was found that the bonding strengths of the examples were superior to those of the comparative examples.

[Experimental Example 2: Evaluation of heat resistance]

The adhesive sheets or adhesives of Examples and Comparative Examples were heated for 8 hours in a hot-air circulating heating furnace maintained at 80 캜, and yellowing degree was visually observed. The results are shown in Table 2 below.

[Table 2]

As can be seen from the above Table 2, in the Examples, yellowing portions were hardly observed unlike the Comparative Examples. As a result, it was found that the heat resistance of the example was very excellent as compared with the comparative example.

[Experimental Example 3: Evaluation of antimicrobial activity]

The adhesive compositions of Example 3 and Comparative Examples were subjected to an antibacterial activity test (JIS Z 2801). Aspergillus niger ATCC 9642 (fungus) was used as the test strain and the antibacterial activity (antibacterial activity value) was evaluated and shown in Table 3 below.

[Table 3]

The antimicrobial activity value refers to a value obtained by evaluating the degree of antimicrobial activity by comparing the number of strains cultured for a certain period of time. When the value is 1 or more, 90% or more of the strains are present, 2 or more are 99% , More than 99.99% of the strain is over 4, and more than 5 is more than 99.999% of the strain is killed.

As can be seen from the above Table 3, it was found that the antibacterial activity of Example 3 containing gamma-boehmite was superior to that of Comparative Example.

The adhesive sheet comprises an adhesive composition. Then, a plastic sheet is placed on the adhesive sheet according to the present invention, and the plastic sheet includes a plastic composition.

The plastic composition includes polypropylene resin, high density polyethylene resin (HDPE), talc and germanium powder. INDUSTRIAL APPLICABILITY The present invention can improve mechanical properties such as heat resistance and durability, can improve the twisting phenomenon, and can minimize the harmfulness to an operator who promotes metabolism and handles hooks by emitting far infrared ray. Referring to FIG. 1, since the second extending portion can come into contact with the upper portion of the heavy object, it is required to have a high durability, a high heat resistance to withstand heat due to friction which may occur during loading of the heavy object, And should not be harmful to workers working near the hook.

Polypropylene resin is a thermoplastic resin which is obtained by polymerization of propylene and is known as an environmentally friendly material which is inexpensive in performance and does not have a risk of being in contact with the contents of foods or cosmetics. The polypropylene resin is excellent in chemical resistance, mechanical properties , And excellent in thermal properties. The polypropylene may use at least one selected from a propylene homopolymer, a random copolymer and a block copolymer, but a homopolymer and a random copolymer are mixed in a weight ratio of 3: 2 to improve mechanical properties .

High-density polyethylene (HDPE) resin is a synthetic resin produced by polymerizing ethylene, and has excellent flowability, rigidity, impact resistance, electrical insulation, moldability, and cold resistance. The high-density polyethylene resin may have the effect of improving the formability by mixing with the above-mentioned polypropylene resin to strengthen the tensile force in the housing portion 15 or the manufacture of the product, and a variety of known products may be used.

The talc improves the mechanical properties such as the strength and heat resistance of the plastic composition, and it is preferable to use a talc powder having a particle size of 150 to 200 mesh for mixing with polypropylene resin or the like. The talc may be used in admixture with other filler components, and may preferably be mixed with the dolomite powder at a weight ratio of 1: 1 to contribute to improvement of the durability of the plastic composition.

Germanium is a silvery white metal, which has the effect of promoting metabolism by emitting a large amount of far infrared rays and anions which are beneficial to the human body. Also, due to its semiconducting nature, germanium has a function of increasing the vitality of germanium ions (outer electrons) when they come into contact with the skin. When entering the body, it is released out of the body within 20 ~ 30 hours with various harmful substances, so there is no poisoning or side effects at all. Particularly, when the particles of inorganic germanium come into contact with human skin, semiconductor properties are introduced into the skin tissue by the osmotic action of the outer electron. It has been found that germanium, which penetrates into capillaries in subcutaneous tissues, moves electrons in the blood vessels through the blood vessel walls, performs blood purification, normalizes blood, and discharges excess electron flow to relieve pain. The germanium can be used in the form of powder. It is preferable that the germanium ore is finely cut to 3 cm or less and then the cut germanium ore is pulverized to a particle size of 80 to 100 mesh.

The plastic composition preferably contains 110 to 130 parts by weight of high-density polyethylene resin, 170 to 190 parts by weight of talc, and 1 to 10 parts by weight of germanium powder per 100 parts by weight of the polypropylene resin. When the receiving portion 15 is manufactured using the plastic composition, it is important to control the specific gravity of the plastic composition in order to eliminate the twisting phenomenon. The specific gravity is preferably 1.02 to 1.10, more preferably 1.03 to 1.05 . That is, when the content of the high-density polyethylene resin is less than 110 parts by weight or the talc is less than 170 parts by weight based on 100 parts by weight of the polypropylene resin, mechanical properties such as durability and the like are limited. Is more than 130 parts by weight or the talc is more than 190 parts by weight, there is a possibility that the specific gravity of the plastic composition is increased and the moldability may be deteriorated. If the amount of the germanium powder is less than 1 part by weight with respect to 100 parts by weight of the polypropylene resin, far infrared rays emission effect due to germanium is difficult to manifest. If the amount is more than 10 parts by weight, .

On the other hand, the plastic composition may further contain various additives in order to improve mechanical properties, mixing properties, moldability, antibacterial properties and the like.

In one embodiment, the plastic composition may further comprise a garlic extract. The garlic extract is a natural adhesive component and functions as a binder for improving the mixing property with other constituents such as a polypropylene resin and a high-density polyethylene resin. The garlic extract is peeled and crushed, and 2 to 3 parts by weight of water is added per 1 part by weight of garlic. After heating at 80 to 100 캜 for 5 hours or more, the liquid component is extracted and filtered, The liquid component can be prepared by concentrating at 55 to 60 占 폚. The garlic extract is preferably contained in an amount of 10 to 20 parts by weight based on 100 parts by weight of the polypropylene resin. When the content of the garlic extract is less than 10 parts by weight, the polypropylene resin and talc can not be properly entangled so that the surface of the container 15 may not be evenly formed. When the content of the garlic extract is more than 20 parts by weight, There is a possibility that the dispersibility and the mixing property may be lowered.

At this time, sucrose (C ₁₂ H ₂₂ O ₁₁ ) powder may be mixed and used to supplement the function of the garlic extract. Sucrose improves the mixing property of the entire composition to enable extrusion in the form of a thin film during the stretching process for producing a plastic composition and makes it possible to catch molecules which cause viscosity problems during mixing with a polypropylene resin or the like, It can also contribute to problem solving. The sucrose is preferably a powder having a particle size of from 1 to 120 탆 in an amount of 95 wt% or more, which is filtered through a 120-mesh net, and is preferably contained in an amount of 1 to 5 parts by weight based on 100 parts by weight of the polypropylene resin. When the content of sucrose is less than 1 part by weight, the effect expressed by sucrose is insignificant. When the amount of the sucrose is more than 5 parts by weight, the viscosity of the plastic composition is excessively increased, and it is difficult to form a uniform sheet.

In one embodiment, the plastic composition may further comprise a clay powder. Kaolin is white clay based on kaolinite and halloysite, and has excellent resistance to abrasion and thermal shock. The clay is preferably contained in an amount of 5 to 10 parts by weight based on 100 parts by weight of the polypropylene. If the amount of the clay is less than 5 parts by weight, there is a problem that the resistance to the external environment is weak. If the amount is more than 10 parts by weight, a synergistic effect of mechanical properties such as a decrease in compressive strength may not be exhibited.

Plastic composition may further include a titanium dioxide (TiO _2). The titanium dioxide can serve as a filler capable of improving the heat resistance of the plastic composition. The titanium dioxide is preferably contained in an amount of 5 to 15 parts by weight based on 100 parts by weight of the polypropylene resin. If the titanium dioxide is less than 5 parts by weight, the abrasion resistance of the receiving portion 15 formed by the plastic composition can not be effectively improved. If the amount is more than 15 parts by weight, workability may be deteriorated, This may not be good.

The plastic composition may further comprise aluminum hydroxide. Aluminum hydroxide functions as an antimicrobial agent capable of improving the antimicrobial properties of the plastic composition. It is preferable to use boehmite (AlOH (OH)) as the aluminum hydroxide. Boehmite can be any of γ-boehmite, α-boehmite and pseudo-boehmite. Of these, γ-boehmite excellent in crystallinity and excellent in thermal stability and chemical stability, structurally neutral, and excellent in antibacterial property is preferably used. The γ-boehmite can be prepared by supercritical synthesis of only water (pure water) and aluminum (Al). The aluminum hydroxide may be contained in an amount of 2 to 7 parts by weight based on 100 parts by weight of the polypropylene resin. If the content of aluminum hydroxide is less than 2 parts by weight, it is difficult to exhibit the antimicrobial effect to be achieved. If the content is more than 7 parts by weight, the compatibility with other components may be impaired.

Further, the plastic composition may further contain a dispersant, an antifoaming agent and the like within the range not hindering the object of the present invention, and may further include a coloring component to realize various colors of the plastic composition.

Hereinafter, the structure and effects of the present invention will be described in more detail with reference to specific examples and comparative examples. However, this embodiment is intended to explain the present invention more specifically, and the scope of the present invention is not limited to these embodiments.

[Example]

A plastic composition was prepared according to the composition shown in Table 1 below. Each material was made of commercially available material. In the case of garlic extract, it was prepared as described in the description of the invention, and the aluminum hydroxide used was gamma-boehmite.

[Table 1]

[Experimental Example 1]

The compositions of Examples 1 to 5 were heated and then stretched to prepare a plastic sheet having a thickness of 10 mm. The uniformity of the sheet surface was confirmed, and it is shown in Table 2 below. The uniformity was measured using a laser sensor (N ₂ laser, oscillation wavelength 337.1 nm, UDHO Laser., Japan), and 30 points were randomly selected to measure their surface roughness , And less than ± 0.3 was uniform, and more than ± 0.3 was evaluated as non-uniform. Here, Examples 1 and 5 were subjected to a third elongation in the longitudinal direction, and Examples 2 to 4 were subjected to a third elongation in the longitudinal direction, the width direction and the longitudinal direction.

[Table 2]

As shown in Table 2, in the case of Examples 1 to 5, the uniformity of the produced sheet was all good. Among them, it was found that the uniformity of Example 3 was the most excellent.

[Experimental Example 2: Torsion Test]

The compositions of Examples 1 to 5 were heated and then stretched to prepare a plastic sheet having a thickness of 2 mm and then molded to produce 100 plastic articles. At this time, the finished product was evaluated for completeness, . Here, Examples 1 and 5 were subjected to a third elongation in the longitudinal direction, and Examples 2 to 4 were subjected to a third elongation in the longitudinal direction, the width direction and the longitudinal direction. 2 is a diagram showing a state in a good state, and Fig. 3 is a diagram showing a state in which it is in a bad state (twist phenomenon).

[Table 3]

As shown in Table 3, in Examples 2 to 4, more than 90% of normal products could be made. Particularly, in Example 3, the defective rate was very small.

[Experimental Example 3: Odor test]

An odor test was carried out for Examples 1 and 3 using ammonia gas. After the initial concentration measurement, the concentration after 5 minutes was measured and the deodorization rate was evaluated. The results are shown in Table 4 below.

[Table 4]

As shown in Table 4, it was found that Example 1 had little deodorizing effect, but Example 3 showed some deodorizing effect.

[Experimental Example 4: Antimicrobial Test]

The compositions of Examples 1 and 3 were tested for antibacterial activity (JIS Z 2801). Staphylococcus aureus ATCC 6538 (Staphylococcus aureus) and Escherichia coli ATCC 25922 (Escherichia coli) were used as the test strains, and the antibacterial activity (antibacterial activity value) was evaluated.

[Table 5]

The antimicrobial activity value refers to a value obtained by evaluating the degree of antimicrobial activity by comparing the number of strains cultured for a certain period of time. When the value is 1 or more, 90% or more of the strains are present, 2 or more are 99% , More than 99.99% of the strain is over 4, and more than 5 is more than 99.999% of the strain is killed. In the case of Example 3, it was confirmed that the antibacterial effect by γ-boehmite was exhibited.

The present invention may be embodied in various forms without departing from the scope of the invention. Accordingly, it is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.

100: coil winding device
110: coil supply part 111: coil 120: roller part
130: coil penetrating part 150: rotating device 151: rotating part
152: control unit 153: display 154: control unit
160: jig 161: jig body 162: jig projection
163: groove 164: voice coil insertion portion 165: coil fixing portion
170: Voice coil 171: Projection part 200: Retraction roller supporting device
210: support base 211: support body 212: button portion
213: ball bearing 214: guider 215: inclined surface
230: rotating plate 231: driving part 240: height adjusting part

Claims (2)

A coil supply part for supplying a coil;
A roller unit for moving a coil supplied from the coil supply unit;
A coil penetrating portion for setting a moving direction of the coil passing through the roller portion;
An adjusting unit for adjusting a tension applied to the coil passing through the roller unit; And
And a rotary part to which a voice coil mounted jig is coupled and is rotatably controlled,
And an end of a coil passing through the coil penetration portion is fixedly coupled to the jig,
The jig,
A cylindrical jig body; And
And a jig projection protruding from the inside of the jig body and having a diameter smaller than that of the jig body,
Wherein the voice coil is inserted between the jig body and the jig projecting portion, the inner circumferential surface of the voice coil is formed with a protrusion having an elastic material,
The control unit includes:
A contact roller contacting the coil and applying tension to the coil,
Wherein the contact roller is rotatably and movably mounted and has a ring shape including a cavity to allow insertion of an adjustment rotation axis,
Wherein the adjustment ring further comprises a guide groove for guiding movement of the adjustment rotary shaft, the adjustment ring being linearly or rotationally moving relative to the adjustment rotary shaft, And moves in the direction of the rotation axis.

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