KR101478559B1 - Chalkboard for magnetic sticking manufacturing apparatus - Google Patents

Abstract

In the present invention, provided are a blackboard and a manufacturing method and a device thereof. The blackboard of the present invention comprises a sheet, which has fine particles of iron and is accordingly attached to a magnet, wherein the sheet is connected to the front surface of a back plate of the black board, and therefore, can be easily cut without using an extra cutting machine and be accordingly designed or processed in various characters like heart and star. In addition, the blackboard does not have magnet components, so the board can be easily manufactured by using a processing device made from iron. The blackboard comprises a back plate consisting of at least one among wood, paper and synthesis resin.

Description

{CHALKBOARD FOR MAGNETIC STICKING MANUFACTURING APPARATUS}

More particularly, the present invention relates to an apparatus for manufacturing a blackboard, and more particularly, to a method of manufacturing a blackboard for a magnet, which comprises a step of joining a magnet mounting sheet including iron fine particles to a front surface of a thick plate, Which can be easily manufactured and manufactured by using a machining apparatus of iron because no magnet component is included in the inside of the magnet.

Generally, chalkboard is a tool that draws or draws pictures using chalk or markers on the front.

Among the above blackboards, there is a black board for magnet mounting, which is equipped with a magnet on the front side to post a memo or to attach an accessory made of a magnet material. A conventional blackboard for magnet attachment is manufactured by preparing a steel plate on which a magnet can be attached and attaching a film to the entire surface of the steel plate or by coating the front surface of the steel plate with a paint as shown in Japanese Utility Model Publication No. 91-4194 Lt; / RTI >

However, in the conventional black board for magnet mounting, since the steel plate constituting the thick plate must have a separate cutter, it is not easy to work. Therefore, most of the steel plate is cut into a predetermined shape by using a separate cutter, It is difficult to design and process the board in a desired form.

In order to solve such a problem, some products using rubber magnets manufactured by mixing magnet particles with a rubber component have been disclosed. However, in the case of a product using the rubber magnet, the rubber magnet has a disadvantage in that the manufacturing process is complicated. Since the rubber magnet includes the magnet fine particles inside the magnet, the iron fine magnetic particles are different from the iron- So that it is difficult to manufacture such a steel by using such a machining apparatus.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and it is an object of the present invention to provide a blackboard manufacturing apparatus for mounting a magnet, which can be easily designed or machined in various forms, The main purpose is to provide.

A black board for a magnet mounting according to the present invention comprises: a thick plate made of one of wood, paper and synthetic resin; A magnet mounting sheet joined to the front surface of the thick plate; And a frame coupled to the thick plates and the magnet attachment sheet bonded to each other; Wherein the magnetic attachment sheet comprises a first sheet comprising 50 to 80% by weight of polyvinyl chloride (PVC) and 20 to 50% by weight of iron (Fe) fine particles; A second sheet made of colored PVC only and disposed on the front surface of the first sheet; A third sheet made of PET (polyethylene terephthalate) having a UV coating on its entire surface and disposed on the front surface of the second sheet; And an adhesive layer formed on the rear surface of the first sheet; And a control unit.

In an embodiment of the present invention, the blackboard for magnet attachment may be formed in a specific design.

According to the present invention, there is provided a method of manufacturing a black board for a magnet, comprising: mixing 50 to 80% by weight of PVC and 20 to 50% by weight of iron fine particles in a molten state at a high temperature and pressing them to prepare a first sheet; Adding a pigment to the PVC, dyeing it, and pressing it to prepare a second sheet; Providing a third sheet by UV coating the entire surface after pressing the PET; Arranging the first to third sheets in order from the back, thermally fusing and laminating them; Cooling the laminate; Providing an adhesive layer on the rear surface of the joint to provide a magnet attachment sheet; Joining the magnet mounting sheet to a front surface of a thick plate made of one of wood, paper, and synthetic resin; And joining a mold around the joined thick plate and the magnet attachment sheet; And a control unit.

A blackboard manufacturing apparatus for a magnet according to the present invention comprises a first sheet producing means for mixing a PVC and an iron fine particle at a high temperature and then pressing them to prepare a first sheet in the form of a roll, A third sheet producing means for forming a roll-shaped third sheet by UV-coating the surface of the PET after the PET is pressed; First to third sheet supply rollers for continuously supplying the first to third sheets, respectively; First to third preheating rollers disposed behind the first to third sheet feeding rollers and preheating the first to third sheets, respectively; A joining part for laminating the preheated first to third sheets in order from the back and thermally fusing them; A plurality of cooling rollers disposed at a rear side of the jam and arranged to have a gradually lower temperature progressively toward the rear of the jam, wherein the cooling rollers gradually cool the joining material through the plurality of cooling rollers; A heater for heating the applied adhesive to form a pressure-sensitive adhesive layer, and a blower for cooling the laminated sheet formed with the pressure-sensitive adhesive layer to provide a magnet mounting sheet, An adhesive layer forming unit comprising: Joining means for joining the magnet mounting sheet having the adhesive layer formed thereon to the entire surface of a thick plate made of one of an iron plate, wood, paper and synthetic resin; And frame engaging means for engaging the frame around the thick plates and the magnet attaching sheet bonded to each other; Wherein the joining portion comprises: a heating drum heated to a predetermined temperature; A heater disposed at a predetermined interval around the heating drum; A first rubber roller disposed adjacent to the heating drum to contact the third sheet at the start of jointing; A second rubber roller installed at the rear of the heating drum and arranged to contact the first sheet upon completion of the lamination; And a metal roller disposed adjacent to the second rubber roller so that the third sheet is in contact with the first rubber roller upon completion of lamination; Wherein the first to third sheets are put between the heating drum and the first rubber roller to be first squeezed, passed between the heating drum and the heater, heated and passed between the second rubber roller and the metal roller And then thermally fused with the laminate.

According to another preferred aspect of the present invention, the joining portion comprises: a first cylinder for pushing the first rubber roller toward the heating drum; And a second cylinder for pushing the metal roller toward the second rubber roller; As shown in FIG.

Since the magnet mounting sheet according to the embodiment of the present invention is formed by joining the magnet mounting sheet including the iron fine particles to the entire surface of the thick plate, it is easy to cut even without a separate cutter, And it can be easily manufactured by using an iron machining device such as a steel roller because the magnet component is not included in the inside.

1 is an exploded perspective view schematically showing a black board for a magnet mounting according to an embodiment of the present invention.
Fig. 2 is a cross-sectional view showing one embodiment of a magnet attachment sheet in the black board for magnet attachment shown in Fig. 1;
3 is a flowchart illustrating a method of manufacturing a blackboard for magnet attachment according to an embodiment of the present invention.
4 is a side view schematically showing an apparatus for manufacturing a blackboard for magnet mounting according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. However, the embodiments of the present invention can be modified into various other forms, and the scope of the present invention is not limited to the following embodiments.

In addition, to include an element throughout the specification does not exclude other elements unless specifically stated otherwise, but may include other elements.

1 is an exploded perspective view schematically showing a black board for a magnet mounting according to an embodiment of the present invention. Referring to FIG. 1, a blackboard 1 for magnet mounting according to the present embodiment includes a thick plate 200, a magnet mounting sheet 100 bonded to the entire surface of the thick plate 200, and a frame 300.

The thick plate 200 may be formed of one of materials such as iron plate, wood, paper and synthetic resin. Here, when the thick plate 200 is formed of a material such as wood, paper, or synthetic resin except for the steel plate, the blackboard 1 for magnet attachment of the present invention can be easily cut and processed so that a character such as a star or a heart "Pororo" Can be formed into a specific design.

The frame 300 is a component used as a finishing finish in the manufacture of a blackboard, and is formed in a shape corresponding to the thick plate 200, and is formed in a frame shape and includes a thick plate 200 and a magnet mounting sheet 100 Thereby preventing the thick plate 200 and the magnet mounting sheet 100 from being separated unexpectedly and preventing breakage from occurring when an impact is applied to the periphery of the product.

Fig. 2 is a cross-sectional view showing one embodiment of a magnet attachment sheet in the black board for magnet attachment shown in Fig. 1; Although the direction of the drawing is shown as being vertically stacked so as to easily show the laminated structure of each of the sheets and the adhesive layer in FIG. 2, in the following description, the upper direction of FIG. The front direction in the installation structure and the downward direction are described in parallel in the backward direction in the actual blackboard installation structure.

Referring to Fig. 2, the magnet mounting sheet 100 of the present embodiment includes first to third sheets 110, 120, and 130 stacked in order from rear to front.

The first sheet 110 includes 50 to 80% by weight of polyvinyl chloride (PVC) and 20 to 50% by weight of iron (Fe) fine particles. At this time, the PVC and the iron fine particles are melted at a high temperature to be mixed so that the fine iron particles are dispersed in the PVC in a certain form. In addition, the iron fine particles serve to attach magnets to the entire surface of the magnet attachment sheet 100. [ If the amount of the iron fine particles is less than 20% by weight, the magnet may not be adhered properly. If the content of the iron fine particles exceeds 80% by weight, it may be difficult to form the sheet. At this time, the thickness of the first sheet 110 may be 0.01 mm to 0.2 mm. If the thickness of the first sheet 110 is less than 0.01 mm, the magnet may not be adhered properly and may fall off. If the thickness of the first sheet 110 exceeds 0.2 mm, the weight of the product may increase and the manufacturing cost may increase.

The second sheet 120 is made of only colored PVC and is disposed on the front side of the first sheet 110. In the case of the first sheet 110, since the iron fine particles are included in the component, the surface becomes uneven and blackish. Since the present invention is directed to the blackboard, if the surface is uneven and the color is black, the product can not function properly as a blackboard.

The second sheet 120 is for solving such a problem. The second sheet 120 smoothes the entire surface of the magnet mounting sheet 100 and removes the black color due to the iron fine particle component of the first sheet 110, It is intended to change the actual color of the blackboard (the color seen from the outside) to a color with good readability. At this time, the hue of the second sheet 120 may be colored, for example, white or green, which is easily handwritten and excellent in readability after writing, and the present invention is not limited thereto.

At this time, the thickness of the second sheet 120 may be 0.06 mm to 0.3 mm. If the thickness of the second sheet 120 is less than 0.06 mm, the rough surface of the first sheet 110 may not be concealed and black of the first sheet 110 may be exposed. If the thickness of the second sheet 120 exceeds 0.3 mm, The weight of the product is increased and the manufacturing cost is increased.

The third sheet 130 is made of PET (polyethylene terephthalate) and has a UV coating layer 131 on its entire surface. The PET is an eco-friendly material, for example, also used as a beverage bottle. In addition, the PET has a higher temperature than that of the PVC component, so that the PET can work at a high temperature. That is, when the magnet mounting sheet 100 is manufactured, the temperature of the magnet mounting sheet 100 is maximized so that the lamination can be performed well.

Further, when the third sheet 130 made of PET having high strength is disposed on the entire surface of the magnet mounting sheet 100, scratches do not occur. In addition, PET has a characteristic that it is generally well bonded to the UV coating layer 131 as compared with a PVC material.

In addition, since the PET has a high strength, even when the third sheet 130 is formed to be thin, all of the above effects are realized. Therefore, the total weight and thickness of the magnet mounting sheet 100 can be reduced, It is expected that the effect can be saved.

On the other hand, the third sheet 130 has a primer so as to be easily coupled with the second sheet 120. At this time, for example, urethane system can be applied to the primer, but the present invention is not limited thereto.

In addition, the thickness of the third sheet 130 may be 0.019 mm to 0.19 mm. If the thickness of the third sheet 130 is less than 0.19 mm, the durability of the third sheet 130 may deteriorate, causing surface scratches and surface damage due to external impact. If the thickness of the third sheet 130 exceeds 0.19 mm, A manufacturing cost may be increased. In addition, the thickness of the UV coating layer 131 may be 0.002 to 0.015 mm. When the thickness of the UV coating layer 131 is less than 0.002 mm, surface scratches easily occur due to external action. When the thickness exceeds 0.015 mm, the coating layer may be broken.

An adhesive layer 140 is formed on the back surface of the first sheet 110. The adhesive layer 140 is preferably formed of an acrylic pressure-sensitive adhesive, and the present invention is not limited thereto. In addition, the thickness of the adhesive layer 140 is increased up to the critical thickness as the thickness increases, so that the adhesive strength can be increased by increasing the thickness as much as possible. Preferably, the thickness of the adhesive layer 140 may be 0.015 mm to 0.04 mm. If the thickness of the adhesive layer 140 is less than 0.015 mm, the adhesive force between the magnet mounting sheet 100 and the thick plate 200 may be unexpectedly separated after the bonding of the magnet mounting sheet 100 and the thick plate 200, The adhesive component may be exposed between the interface between the magnet mounting sheet 100 and the thick plate 200 in the bonding process.

On the other hand, a releasing paper 150 may be attached to the back surface of the adhesive layer 140 if necessary. The release paper 150 is for preventing impurities from adhering to the adhesive layer 140 when the finished magnet attachment sheet 100 is stored or transported or from being damaged by impact or the like.

For example, the release paper 150 may be a product in which a PE film is bonded to paper and a silicone is formed on the outer surface of the PE film, but the present invention is not limited thereto. Here, acrylic and silicon are not bonded to each other because they are opposite to each other, and thus silicone release products can be used in the case of acrylic pressure sensitive adhesive.

In addition, the release paper 150 may have a difference in releasing force and transfer ratio depending on the type of silicon used at that time. Generally, the release paper 150 has a transfer ratio of 90% or more. Here, the transfer ratio indicates the value of silicon being transferred to the acrylic side, and the lower the change of physical properties is, the lower the transfer rate is.

Hereinafter, a process for manufacturing the above-described blackboard for magnet mounting using a device for manufacturing a blackboard for mounting a magnet according to an embodiment of the present invention will be described in detail.

3 is a flowchart illustrating a method of manufacturing a blackboard for magnet attachment according to an embodiment of the present invention. Referring to FIG. 3, the first to third sheets 110, 120, and 130 are provided (S11, S12, and S13), respectively.

The first sheet 110 is prepared by mixing 50 to 80% by weight of PVC and 20 to 50% by weight of iron fine particles (S11). At this time, the iron fine particles may use fine powder of 50 to 2000 mesh, but the present invention is not limited thereto. The PVC and the fine iron particles are mixed in a molten state at a high temperature so that the fine iron particles are dispersed in the PVC in a certain form.

The PVC includes a homopolymer obtained by polymerizing only monomers, and a copolymer obtained by copolymerizing vinyl chloride monomer and another monomer. When choosing PVC, the most important things to consider are average degree of polymerization, grain size, workability and heat resistance. The higher the average degree of polymerization, the higher the processing temperature, but the superior physical properties can be obtained. A resin obtained by graft-polymerizing vinyl chloride on a copolymer resin of ethylene and vinyl acetate can provide a product that is smooth and excellent in transparency even when a plasticizer is not blended.

When the PVC is gelled, a very hard material can be obtained within a temperature range of use. By controlling the amount of the plasticizer, a soft material can be obtained. The purpose of plasticizers is softening. Therefore, the raw material in which the PVC and the iron fine particles are mixed is supplied to the calender in a gel state through the preheating process, and the calender is rolled to a desired thickness through several rolls to produce a sheet.

The second sheet 120 is made by putting pigment into a PVC, dyeing it, compressing it into a sheet shape (S12). The third sheet 130 is formed by UV-curing the front surface of the PET and primer-coating the rear surface thereof (S13).

The manufacturing process of the first to third sheets 110, 120, and 130 may be performed mainly through calendering, but the present invention is not limited thereto. The calender processing is a molding method in which raw materials are rolled between two or more rolls which are rotated in mutually opposite directions and whose intervals are adjustable, and are continuously produced in the form of a sheet.

Next, the first to third sheets 110, 120 and 130 are successively supplied while the first sheets 110 are arranged in order so as to be the rear surface, and then laminated. Then, the sheets are thermally fused continuously, (S20).

At this time, the first to third sheets 110, 120, and 130 may be preheated to a predetermined temperature before being laminated. The preheating process is preferably performed by heating the first to third sheets 110, 120, and 130 with respective preheating rollers 21, 22, and 23. This is because the components of the first to third sheets 110, 120, and 130 are different and the temperatures suitable for preheating are all different.

Next, the thus formed laminate 100 'is gradually cooled so that the temperature gradually decreases (S30). This is because rapid cooling to a too low temperature from the beginning may cause wrinkles on the surface of the joint.

Next, an adhesive layer 140 is formed on the rear surface of the laminate 100 ', that is, on the rear surface of the first sheet 110 to manufacture the magnet attachment sheet 100 (S40).

Next, the thus prepared magnet attachment sheet 100 is bonded to the entire surface of the thick plate 200 made of one of wood, paper and synthetic resin (S50). When the thick plate 200 is made of a material such as wood, paper and synthetic resin, it can be cut with a knife, scissors or the like, and can be processed very conveniently. Accordingly, the thick plate 200 may be cut into a desired shape in advance, and then the magnet attachment sheet 100 may be suitably cut off and bonded to the plate 100. The magnet attachment sheet 100 is first bonded onto the thick plate 200, And the magnetic attachment sheet 100 are simultaneously cut and processed, the order of bonding and cutting can be changed back and forth, and the present invention is not limited thereto.

Also, the thick plate 200 may be made of an iron plate. However, when the thick plate 200 is made of a steel plate, the magnet attachment force can be improved, but a separate cutting machine is required, so that cutting work may be difficult.

Next, the chalkboard 1 is completed by joining the frame 300 to the periphery of the thick plate 200 and the magnet attachment sheet 100 (S60).

In the case where the magnet attachment sheet 100 is not used as needed but is stored in a separate place or moved to another working place, the release sheet 150 may be attached to the adhesive layer 140, have.

When the magnet mounting sheet 100 is joined to the front surface of the thick plate 200, a part of the wound magnet mounting sheet 100 is cut to a predetermined size corresponding to the size of the thick plate 200, Peeled and separated, and then bonded to the thick plate 200 or the like using an adhesive layer 140.

4 is a side view schematically showing an apparatus for manufacturing a blackboard for magnet mounting according to an embodiment of the present invention. Referring to FIG. 4, an apparatus for manufacturing a black board for magnet mounting according to an embodiment of the present invention includes first to third sheet producing means; The first to third sheet feeding rollers 11 to 12 and the first to third preheating rollers 21 to 22 and the joint portion 40 to the cooling portion 50 and the adhesive layer forming portion 60, , Joining means and frame engaging means.

The first sheet producing means mixes PVC and iron fine particles at a high temperature and then presses them to prepare a roll-shaped first sheet. The second sheet producing means is made by adding colored pigment to PVC, dyeing it, and pressing it to provide a roll-shaped second sheet. The third sheet manufacturing means is provided with a third sheet in the form of a roll, with the UV coated on the front side of the PET and the primer attached on the rear side.

The first sheet feeding roller 11 continuously feeds back the first sheet in the form of a roll formed by mixing PVC and iron fine particles. The second sheet supply roller 12 continuously supplies the second sheet in the form of a roll made of colored tinted PVC successively backward. The third sheet feeding roller 13 continuously feeds backward a third sheet in the form of a roll made of UV-coated PET on the upper surface.

The first to third preheating rollers 21, 22 and 23 are disposed behind the first to third sheet feeding rollers 11, 12 and 13 and the first to third sheet feeding rollers 11, 12 and 13, The first to third sheets 110, 120, and 130, which are continuously supplied from the first and second sheets 110 and 120, respectively. At this time, the first preheating roller 21 is heated to 120 to 160 ° C, the second preheating roller 22 is heated to 100 to 140 ° C, and the third preheating roller 23 is heated to 80 to 160 ° C.

The reason why the temperatures of the first to third preheating rollers 21, 22 and 23 are all different is because the components of the first to third sheets 110, 120, and 130 are different and the temperatures suitable for preheating are all different. If each of the preheating temperatures is lower than the above temperature, there is a problem that the post-process thermal fusion is not properly performed, and thus the first to third sheets 110, 120, and 130 are unexpectedly separated after being laminated. If the preheating temperature is higher than the above-mentioned temperature, wrinkles may occur during the subsequent heat-sealing process.

The pre-heated first to third sheets 110, 120 and 130 are laminated in order on the rear side of the first sheet 110, followed by thermal fusion bonding. The ridge portion 40 includes a heating drum 41, a heater 44 disposed around the heating drum 41 at a predetermined interval, a first rubber roller 42, a second rubber roller 45, a metal roller 46, And first and second cylinders (43, 47).

The heating drum 41 and the heater 44 are heated to a predetermined temperature and function to thermally fuse the first compressed laminated sheet 100 '. If heating is performed only on one side of the sheet at the time of laminating, there is a problem that the sheet is collapsed due to laminating. The heating drum 41 and the heater 44 are disposed adjacent to and facing each other on the front and rear surfaces of the laminate 100 'so that the heating drum 41 and the heater 44 are disposed on both sides of the laminate 100' So that it is possible to prevent the occurrence of such shrinkage.

The heating drum 41 is heated to 130 to 160 캜 and the heater 44 contacts the third sheet 130 made of PET so that the first sheet 110 made of iron and PVC is in contact with the heating drum 41 to a high temperature of 200 to 250 캜 in consideration of the characteristics of the sheet. At this time, if the temperature of the heating drum 41 and the heater 44 is lower than the above temperature, the first to third sheets 110, 120, and 130 may not be fused properly, and the heating drum 41 and the heater 44 may exceed the above-mentioned temperature, the PVC component may stick to the heating drum 41.

 The first rubber roller 42 is disposed adjacent to and facing the heating drum 44 at the sheet introduction portion of the heating drum 44 and is disposed between the first rubber roller 42 and the heating drum 44, Three sheets 110, 120, and 130 are first pressed to form a laminate.

A first cylinder 43 is connected to the first rubber roller 42 so that the first rubber roller 42 is pushed toward the heating drum 41 by the operation of the first cylinder 43, 42 and the heating drum 44 can be brought into closer contact with each other. At this time, since the third sheet 130 made of PET is adhered to the first rubber roller 42, the first rubber roller 42 makes the surface of the third sheet 130 smoother and laminates.

The second rubber roller 45 and the metal roller 46 are disposed adjacent to each other on the rear side of the heating drum 41 so as to be adjacent to each other and to be disposed between the second rubber roller 45 and the metal roller 46, And secondarily presses them. At this time, the second cylinder 47 is connected to the metal roller 46, and the metal roller 46 is pushed toward the second rubber roller 45 by the operation of the second cylinder 47. At this time, the third sheet 130 made of PET is closely adhered to the metal roller 46, and the surface of the third sheet 130 is smoothly processed. On the second rubber roller 45, a first sheet made of iron + PVC 110 are in close contact with each other, the second rubber roller 45 is disposed so as to buffer the rugged portion by the iron component.

The cooling section 50 is provided at the rear of the joining section 40 and includes a plurality of cooling rollers 51a-51g disposed so as to have gradually lower temperatures toward the rear. The temperature of the cooling rollers 51a-51g is between about 12 and 25 占 폚. So that the lips 100 'are gradually cooled through the plurality of cooling rollers 51a-51g.

The adhesive layer forming unit 60 is provided behind the cooling unit 50 and forms an adhesive layer 140 on the rear surface of the laminate 100 'to complete the magnet mounting sheet 100. The adhesive layer forming portion 60 includes an adhesive applying portion 61 for applying an adhesive to the rear surface of the joint 100 ', a heater 62 for heating the applied adhesive to about 20 to 40 캜 to form the adhesive layer 140, And a cooler 63 for providing the magnet attachment sheet 100 by supplying cold wind to the laminated sheet 100 'on which the adhesive layer 140 is formed to cool the sheet. In FIG. 4, reference numeral 64 denotes a chamber 64 provided with a heater 62 and a cooler 63.

The bonding means serves to bond the magnet mounting sheet 100 on which the adhesive layer 140 is formed to the entire surface of the thick plate 200 made of one of iron plate, wood, paper and synthetic resin. The frame engaging means serves to engage the frame around the thick plate and the magnet attaching sheet bonded to each other.

On the other hand, in order to carry and store the magnet mounting sheet 100, it is possible to further include a release paper attaching portion and a winding roller. The release paper attaching portion supplies release paper to the back surface of the magnet attachment sheet 100, and the take-up roller serves to roll the magnet attachment sheet 100 with the release paper 150 in the form of a roll.

The present invention is not limited by the above-described embodiment and the accompanying drawings, but is intended to be limited by the appended claims.

It will be apparent to those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. something to do.

One ; Chalkboard 11; The first sheet-
12; A second sheet supply roller 13; The third sheet feeding roller
21-23; First to third preheating rollers 40; Joint part
41; A heating drum 42; The first rubber roller
43; A first cylinder 44; heater
45; A second rubber roller 46; Metal roller
47; A second cylinder 50; Cooling section
51a-51g; Cooling roller 60; The adhesive layer-
61; An adhesive applying section 62; heater
63; Cooler 64; chamber
100; Magnet attachment sheet
200; A thick plate 300; frame

Claims (5)

delete delete delete A first sheet producing means for mixing a PVC and an iron fine particle at a high temperature and then pressing them to prepare a first sheet in the form of a roll; a second sheet producing means for staining and coloring the colored pigment in PVC, A third sheet producing means for preparing a roll-shaped third sheet by applying UV coating on the front surface and primer coating on the back surface after the PET is squeezed;
First to third sheet supply rollers for continuously supplying the first to third sheets, respectively;
First to third preheating rollers disposed behind the first to third sheet feeding rollers and preheating the first to third sheets, respectively;
A joining part for laminating the preheated first to third sheets in order from the back and thermally fusing them;
A plurality of cooling rollers disposed at a rear side of the jam and arranged to have a gradually lower temperature progressively toward the rear of the jam, wherein the cooling rollers gradually cool the joining material through the plurality of cooling rollers;
A heater for heating the applied adhesive to form an adhesive layer and a cooler for cooling the laminated sheet formed with the adhesive layer to provide a magnet mounting sheet, An adhesive layer forming unit comprising:
Joining means for joining the magnet mounting sheet having the adhesive layer formed thereon to the entire surface of a thick plate made of one of an iron plate, wood, paper and synthetic resin; And
A frame engaging means for engaging a frame around the thick plates and the magnet attaching sheet bonded to each other; / RTI >
The joining portion includes a heating drum heated to a predetermined temperature; A heater disposed at a predetermined interval around the heating drum; A first rubber roller disposed adjacent to the heating drum to contact the third sheet at the start of jointing; A second rubber roller installed at the rear of the heating drum and arranged to contact the first sheet upon completion of the lamination; And a metal roller disposed adjacent to the second rubber roller so that the third sheet is in contact with the first rubber roller upon completion of lamination; / RTI >
The first to third sheets are put between the heating drum and the first rubber rollers to be first squeezed, passed between the heating drum and the heater, heated, passed between the second rubber rollers and the metal rollers, and secondarily squeezed Wherein the heat insulating member is thermally welded to the magnet. 5. The apparatus of claim 4, wherein the joining portion comprises: a first cylinder for pushing the first rubber roller toward the heating drum; And a second cylinder for pushing the metal roller toward the second rubber roller; Further comprising a magnetic circuit for magnetically mounting the magnetic circuit.

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