KR100710464B1 - Adhesion sheet having emboss, and apparatus and process for manufacturing the same - Google Patents

Abstract

The present invention relates to an embossed pressure-sensitive adhesive sheet and a manufacturing apparatus and a manufacturing method thereof. According to the present invention, in the pressure-sensitive adhesive sheet 10 in which the emboss 5 is formed, the emboss 5 has a depth h of the intaglio 5b of 50 to 100% of the thickness of the pressure sensitive adhesive 2, An adhesive sheet is provided in which the area S1 of the relief 5a occupies 10 to 30% of the total area. In addition, the present invention provides a manufacturing apparatus and a manufacturing method of the pressure-sensitive adhesive sheet to inject the gas to form the emboss (5). The manufacturing apparatus is configured to spray the gas supply means 100 and the gas drawn from the gas supply means 100 to the surface of the adhesive sheet 10 to form the emboss 5 and at least one gas nozzle 210 Attached to the gas injector 200, the curing machine 300 to cure the pressure-sensitive adhesive sheet 10 in which the emboss 5 is formed by the gas injector 200, the adhesive to the gas injector 200 and the curing machine 300 It comprises a conveying means 400 for conveying the sheet (10). Accordingly, the pressure sensitive adhesive sheet 10 of the present invention has high adhesion and peelability. Further, according to the manufacturing apparatus and the manufacturing method of the present invention, it is easy to form the emboss 5 and can form the emboss 5 of the fine structure, in particular the number, shape, depth, width, etc. of the emboss 5 It has an effect that can be freely adjusted.

Adhesive Sheet, Emboss, Gas, Gas Nozzle, Curing Machine, Adhesiveness, Peelability

Description

Adhesive sheet formed with embossing and its manufacturing apparatus and manufacturing method {ADHESION SHEET HAVING EMBOSS, AND APPARATUS AND PROCESS FOR MANUFACTURING THE SAME}             

1 is a cross-sectional view showing a manufacturing apparatus of a pressure-sensitive adhesive sheet according to the prior art.

Figure 2 is a cross-sectional configuration of the adhesive sheet according to the present invention.

3A and 3B show an adhesive sheet according to the present invention, which is a plan view of an adhesive sheet having various types of embossing sheets.

4 is a perspective view showing an embodiment of an adhesive sheet according to the present invention, illustrating one embodiment of the device.

Figure 5 shows the manufacturing apparatus of the pressure-sensitive adhesive sheet according to the present invention, is a side configuration diagram of FIG.

Figure 6 is a perspective configuration showing an embodiment of the longitudinal movement means constituting the apparatus for producing a pressure sensitive adhesive sheet according to the present invention.

7 is an isometric view showing an embodiment of a gas injector constituting the apparatus for producing a pressure sensitive adhesive sheet according to the present invention and a cross-sectional enlarged view of a gas nozzle.

Figure 8 is an enlarged cross-sectional view showing another embodiment of the gas nozzle constituting the apparatus for manufacturing an adhesive sheet according to the present invention.

Explanation of symbols on the main parts of the drawings

1: base sheet 2: adhesive

5: emboss 5a: embossed emboss

5b: engraved emboss 10: adhesive sheet

100: gas supply means 200: gas injector

210 gas nozzle 215 Venturi throat

220: flow control valve 250: fastening structure

300: curing machine 400: transfer means

500: longitudinal movement means 510: moving bar

520: drive unit 521: vertically movable member

522: first piston rod 523: first hydraulic cylinder

524: second piston rod 525: second hydraulic cylinder

600: housing 610: guide plate

700: support

S1: area of relief S2: area of relief

H: thickness of adhesive h: depth of intaglio

The present invention relates to an embossed pressure-sensitive adhesive sheet and a manufacturing apparatus and a manufacturing method thereof. More specifically, the present invention relates to a pressure-sensitive adhesive sheet that provides high adhesion and peelability by optimizing the depth of the intaglio constituting the embossing in forming the embossed adhesive sheet. In addition, the present invention can freely adjust the parameters of the emboss, such as the number, shape, depth, width, etc. of the emboss by forming the emboss using a gas, thereby optimizing the parameters of the emboss and high adhesion to the adhesive sheet and The present invention relates to an apparatus for producing an adhesive sheet capable of imparting peelability, and a method of manufacturing the same.

Generally, an adhesive sheet consists of a base sheet and an adhesive coated on this base sheet. The adhesive sheet should have a high adhesiveness above all. At the same time, rework should be easy, and in consideration of environmental problems, it should have good peelability from the attached object to facilitate disposal. To this end, in recent years, emboss (emboss) is formed on the adhesive. Here, the emboss is composed of an embossed portion which is a protruding portion and an intaglio which is a recessed portion. Thus, the embossed portion becomes a portion attached to the object.

In the above, the adhesion may be divided into adhesion between the object and the adhesive sheet, and adhesion determined by the formation of embossing. Here, the adhesive force between the object and the adhesive sheet refers to the adhesive force determined by the adhesion area between the embossed portion and the object or the performance of the adhesive itself, and the adhesive force by the formation of the emboss is a space through which air can escape smoothly when attached. It secures a lot of engraved parts) so that it can be attached freely.

In addition, the peelability by the formation of the embossed means that a lot of air trapped inside the adhesive sheet (that is, the engraved portion of the embossed) to be easily separated from the attached object.

Therefore, the formation of embossing can have high adhesion and peelability, where the adhesion (easiness of attachment) and peelability are determined by the embossed area ratio (or negative area ratio) of the emboss. That is, the lower the ratio of the embossed area of the emboss or the higher the ratio of the negative area, the better the adhesive force (easiness of attachment) and the peelability.

However, the conventional adhesive sheet did not optimize the embossed area to be the adhesive area and did not have high adhesion and peelability. Usually, the relief area is set to 80% or more in the surface area of an adhesive sheet. Moreover, even if it has an embossed area of 80% or less, the area actually bonded is 80% or more. The reason for this is that the depth of the intaglio is low or uneven, and thus the area to be actually bonded by the press during attachment increases. Therefore, in order to give adhesion and peelability, especially high peelability by the formation of embossing, the depth of the intaglio should be optimized.

In addition, with respect to the process for manufacturing the pressure-sensitive adhesive sheet as described above, in particular with respect to the apparatus and method for forming an emboss on the surface of the pressure-sensitive adhesive sheet in the prior art, the formation process of the emboss is complicated, or has a micro (micro) size Could not form emboss. In particular, it was not possible to adjust the emboss's parameters such as the number, shape, depth and width of the emboss. Here, the adjustment means that the number, shape, depth, width, etc. of the emboss can be adjusted after replacing the accessory of the device after the initial setting.

The manufacturing process of the adhesive sheet according to the prior art, that is, the process for forming the embossing on the adhesive sheet is largely three.

First, there is a method of having the embossed while spraying the adhesive on the base sheet in a spray (spray) method. However, this method does not allow the formation of micro sized embosses as well as the number, shape, depth, width, etc. of the embosses. In addition, it is difficult to form a pressure-sensitive adhesive layer having a uniform thickness because the amount of pressure-sensitive adhesive sprayed on the surface is limited, and there is a limit to forming a macro structure, that is, a pressure-sensitive adhesive layer having a relatively thick thickness.

Second, there is a method of using embossed release paper. This is a method of forming an embossing on a release paper using an embo roll (embo roll) first, then coating an adhesive on the surface of the release paper on which the embossing is formed, then plywood the substrate sheet and finally remove the release paper. However, this method is not only complicated in the process itself, but also the thickness and physical properties of the release paper used can not achieve the desired emboss, which also can not form a micro-sized emboss, according to the original design By the process, the number, shape, depth, width and the like of the emboss could not be freely adjusted. At this time, the emboss is set in the same manner as the emboss roll. In order to have a different type of emboss, that is, to adjust the parameters (shape, number, depth, width, etc.) of the emboss, there was a need to replace the embo roll itself.

Third, the method is substantially the same as the second method, which will be described with reference to FIG. 1. The adhesive sheet is passed through the embossing roll 4 in a state in which the base sheet 1 and the pressure-sensitive adhesive 2 are laminated. It is possible to form the emboss 5 in the adhesive 2 by a continuous process, but it is also impossible to form an emboss having a micro size, and it is possible to form an emboss such as the number, shape, depth and width of the emboss. It is not possible to adjust the factor, there was a problem that the embossing roll (4) itself has to be replaced to adjust this.

Therefore, as described above, the apparatus and method for manufacturing a pressure-sensitive adhesive sheet according to the related art cannot freely adjust the factor of embossing, and thus the depth of the intaglio is low or unevenly manufactured, thereby lowering the embossed area. The adhesion did not have excellent adhesion (easiness of attachment) and peelability.

The present invention has been invented to solve the problems and problems of the prior art as described above, by forming an emboss having a high adhesion (easiness of attachment) and peelability by optimizing the emboss factor, in particular the depth of the intaglio and the area of the relief The purpose is to provide an adhesive sheet.

Another object of the present invention is to provide an apparatus for manufacturing a pressure sensitive adhesive sheet and a method thereof, by which embossing is easy by forming a gas to form an emboss, and an emboss of a micro structure can be formed.

Another object of the present invention is to be able to freely adjust the parameters of the emboss, such as the number, shape, depth, width of the emboss, it is possible to easily form a variety of emboss by a simple operation, and to have a high adhesion and peelability It is to provide an apparatus for producing an adhesive sheet and a method thereof.

In order to achieve the above object, the present invention provides an embossed adhesive sheet,

The embossed adhesive sheet is characterized in that the intaglio depth has 50 to 100% of the adhesive thickness. In addition, it is preferable that the embossed area occupies 10-30% of the total area. Here, the total area is the sum of the relief area and the relief area. In the present invention, it is preferable that the emboss is formed by a gas injection that can be easily formed and can freely adjust the depth of the intaglio and the area of the relief.

In addition, the present invention, in the manufacturing apparatus of the pressure-sensitive adhesive sheet formed embossed,

Gas supply means for supplying gas; A gas injector equipped with at least one gas nozzle to form an emboss by injecting the gas drawn from the gas supply means onto the surface of the adhesive sheet; A curing device for curing the pressure-sensitive adhesive sheet on which emboss is formed by the gas injector; It provides a pressure-sensitive adhesive sheet manufacturing apparatus comprising; conveying means for transferring the pressure-sensitive adhesive sheet to the gas injector and the curing machine.

The pressure-sensitive adhesive sheet is supplied to the gas injector by the transfer means while the pressure-sensitive adhesive is uncured. At this time, the pressure-sensitive adhesive is broken by the pressure of the gas injected from the gas injector to form embossing. The apparatus of the present invention as described above may further include a longitudinal movement means connected to the gas injector to move the gas injector freely up, down, left and right, and a control unit for controlling the longitudinal movement means.

In addition, the present invention provides a method for manufacturing an embossed pressure-sensitive adhesive sheet, the method comprising the steps of continuously or discontinuously transporting the pressure-sensitive adhesive sheet coated with the uncured pressure-sensitive adhesive on the base sheet; Forming an emboss by spraying a gas on a surface of the pressure sensitive adhesive sheet; It provides a method for producing a pressure-sensitive adhesive sheet comprising a; step of curing while transferring the pressure-sensitive adhesive sheet formed embossed continuously or discontinuously.

In addition, the manufacturing method of the pressure-sensitive adhesive sheet according to the present invention may further comprise the step of adjusting the factor of the embossing, the apparatus according to the present invention in the manufacturing process is preferably used.

The adhesive sheet according to the present invention is used to fix an object or to fix an object, or to be fixed to an object, for example, an industrial adhesive sheet (normal tape) that can be used to fix an object. , Medical tape and the like. Here, the medical tape includes a surgical tape and a band-aid (emergency band-aid) used for fixing to the skin, such as medical equipment, gauze. In addition, as an object to be used for the purpose of fixing, a wall-mounted adhesive board board on which a note paper can be attached, an album on which a photograph is attached and stored, and the like. In addition, as used for the purpose of being fixed to the object includes sticky notes, stickers and the like.

Hereinafter, with reference to the accompanying drawings will be described in detail the present invention.

First, the adhesive sheet according to the present invention will be described with reference to Fig. 2, the adhesive sheet 10 of the present invention is a base sheet (1), and any one side (top surface in the figure) of the base sheet (2) or It comprises a pressure-sensitive adhesive (2) coated on both sides (upper and lower surface in the drawing). In addition, according to the purpose and use of the adhesive sheet 10, a release paper (not shown) such as a vinyl film may be laminated on the surface coated with the adhesive 2. 2 is an exemplary cross-sectional configuration diagram of the pressure-sensitive adhesive sheet 10 according to the present invention and shows a state composed of a base sheet 1 and a pressure-sensitive adhesive 2 coated on the upper surface of the base sheet 1.

The base sheet 1 has a supporting force that is commonly used, for example, woven fabric, nonwoven fabric, paper, flexible or inflexible synthetic resin sheet (or film), and cork, depending on the purpose and purpose of use. Wood boards such as board boards and combinations thereof. In addition, the adhesive 2 is a resin adhesive that is commonly used, and may be selected from, for example, urethane-based and acrylic adhesives.

As shown in FIG. 2, the embossing 5 is formed in the adhesive 2. At this time, the emboss 5 is composed of an embossed portion 5a that is a protruding portion and an indented portion 5b that is a recessed portion, and the embossed portion 5a is a portion directly attached to an object.

According to the present invention, the emboss 5 has a depth h of the intaglio 5b of 50 to 100% of the thickness H of the adhesive 2. That is, the intaglio 5b is a portion in which the pressure-sensitive adhesive 2 is recessed so that the depth of the recess h occupies 50% or more of the thickness H of the pressure-sensitive adhesive 2. 100% from the above means that the thickness H of the pressure-sensitive adhesive 2 is "0 (zero)" at the portion where the intaglio 5b is formed. This is to prevent the area that is actually bonded by pressure when the adhesive sheet 10 is attached to an object. When the depth h of the intaglio 5b has less than 50%, the pressure-sensitive adhesive 2 of the intaglio 5b portion may also be attached to the object by pressure during attachment, thereby degrading peelability.

Moreover, in the emboss 5, the area S1 of the relief 5a occupies 10 to 30% of the total area. Here, the total area is the total surface area of the adhesive sheet 10, and the non-adhesive area that does not contact the adhesive area that is in contact with the object when the adhesive sheet 10 is attached to the object is added. That is, the area S1 of the relief 5a shown in FIG. 2 and the area S2 of the intaglio 5b are added.

According to the present invention, if the area S1 of the relief 5a occupies 10 to 30% of the total area S1 + S2 of the adhesive sheet 10, the air may be smoothly escaped while being attached while having sufficient adhesive force with the object. It is possible to secure enough space (engraving of embossing), so that it is easy to attach and has particularly excellent peelability. If the area (S1) of the relief (5a) occupies less than 10%, the adhesive strength with the object falls depending on the pressure-sensitive adhesive (2) used, if it exceeds 30% according to the embossing (5) It is hard to have adhesive force (namely, the ease of attachment at the time of attachment) and peelability.

According to the present invention, the intaglio 5b of the emboss 5 has a depth h of 50 to 100% of the thickness H of the adhesive 2 as described above. Depth (h) is 50-100% of the thickness (H) of the adhesive (2) and the area (S1) of the embossed (5a) is the area that is actually bonded to the object when occupying 10-30% of the surface area (S1 + S2) Is the area S1 of the relief 5a. Accordingly, while having sufficient adhesion to the object while securing a lot of space (embossed intaglio) in which air can escape smoothly when attached, it is easy to attach, especially in the interior (embossed intaglio) of the adhesive sheet 10 Is trapped a lot and is easily separated from the object, resulting in high peelability.

The emboss 5 may have various shapes. 3A and 3B are plan views of the adhesive sheet 10 according to the present invention, and show various forms of the emboss 5. The portion shown in black in FIGS. 3A and 3B is the intaglio 5b of the emboss 5. As shown, the intaglio 5b of the emboss 5 may be continuously or discontinuously formed on the adhesive 2, and the shape of the intaglio 5b itself may also have various shapes.

In addition, the emboss 5 is preferably formed by the manufacturing apparatus and manufacturing method of the adhesive sheet 10 according to the present invention described below. According to the apparatus and method of the present invention described below, it is possible to form the emboss 5 of micro size while the formation of the emboss 5 is easy. In particular, the depth h of the intaglio 5b and the area S1 of the relief 5a can be easily optimized as desired in the present invention, and the number, shape, depth, width, etc. of the emboss 5 can be adjusted. In addition, various types of embosses 5 shown in FIGS. 3A and 3B can be easily obtained.

Hereinafter, the number, shape, depth, width and the like of the emboss 5 will be referred to as "embossing factor 5", and the manufacturing apparatus and method of the adhesive sheet 10 according to the present invention will be described.

4 is a perspective view showing an embodiment of an apparatus for manufacturing an adhesive sheet 10 according to the present invention. 5 is a side configuration diagram of FIG. 4 as an apparatus for manufacturing an adhesive sheet 10 according to the present invention.

4 and 5, the manufacturing apparatus of the pressure-sensitive adhesive sheet 10 according to the present invention is a gas supply means 100 for supplying gas, and the gas drawn from the gas supply means 100 to the pressure-sensitive adhesive sheet ( A gas injector 200 for spraying the surface of 10) to form the emboss 5, a curing machine 300 for curing the adhesive sheet 10 in which the emboss 5 is formed by the gas injector 200, and It comprises at least a conveying means 400 for transferring the pressure-sensitive adhesive sheet 10 to the gas injector 200 and the curing machine 300. In addition, the gas injector 200 is equipped with at least one gas nozzle 210.

The pressure sensitive adhesive sheet 10 is continuously supplied to the lower part of the gas injector 200 by the transfer means 400 in a state where the pressure sensitive adhesive 2 is plywood (coated) on the base sheet 1. At this time, the adhesive 2 is in an uncured state. Therefore, the adhesive 2 is formed by the gas injected from the gas nozzle 210, and the emboss 5 is formed, and the adhesive sheet 10 on which the emboss 5 is formed is continuously cured by the transfer means 400. The uncured pressure sensitive adhesive 2 is transferred to 300 to cure. Then, the cured adhesive sheet 10 is supplied to a subsequent process such as a winding process, a cutting process, a release paper plywood process, etc. by the transfer means 400. In the above process, the plywood (coating) process of the base sheet 1 and the pressure-sensitive adhesive 2 is preceded.

Thus, the device according to the invention is characterized in the process for forming the emboss 5 and is optionally associated with the preceding devices and the following devices such as pressure-sensitive adhesive coating machines, winding machines, cutting machines, release paper plywood devices and the like.

The gas supply means 100 is to supply gas to the gas injector 200 continuously or discontinuously, for example, a pressure vessel filled with a high pressure gas, a suction pump for forcibly introducing and discharging external air. This can be The gas supply means 100 and the gas injector 200 may be connected by a flexible tube or a metal pipe, and include an integrated structure. The figure shows a communication with the flexible tube 150. In addition, the gas includes a hydrocarbon-based gas, an inert gas such as nitrogen and a halogen gas, and air. Preferably air is used which is advantageous in terms of cost and stability.

The gas injector 200 forms an emboss 5 by spraying the gas drawn from the gas supply means 100 onto the surface of the pressure-sensitive adhesive 2, and includes at least one gas nozzle 210. The gas injector 200 is installed at least one or more, preferably several arranged in the apparatus of the present invention, one gas injector 200 is equipped with a gas nozzle 210 in the form of one or two or more bundles. In FIG. 4, a plurality of gas injectors 200 are arranged in a straight line, and one gas nozzle 210 is mounted at a lower portion thereof.

The curing machine 300 is to cure the pressure-sensitive adhesive sheet 10 in which the emboss 5 is formed by the gas injector 200, the curing machine 300 is an ultraviolet (UV) curing machine, a thermosetting machine, an electron beam (Electro beam) A curing machine, a dry warmer, and the like. Preferably it is selected from an ultraviolet (UV) curing machine, a thermosetting machine and an electron beam curing machine.

The conveying means 400 is to continuously transfer the adhesive sheet 10 to the gas injector 200 and the curing machine 300, for example, a conveyor belt (conveyer belt) and the like. Preferably, a feed rate adjustment is used. In the drawings, a conveyor belt moved by a plurality of interlocking rollers 450 is illustrated. Such a conveyor belt may be provided with a driving roller (not shown) and a motor (not shown) for rotating the driving roller at its tip or end.

Therefore, the apparatus of the present invention as described above is arranged in the arrangement of the number of gas injectors 200 (ie, the number of gas nozzles 210) and the arrangement intervals of gas injectors 200 (ie, the spacing of gas nozzles 210). Accordingly, the number and shape of the emboss 5 can be set among the parameters of the emboss 5, and in particular, the depth of the intaglio 5a can be set by setting the diameter (D, see FIG. 7) and the injection speed of the gas nozzle 210. h, see FIG. 2) and its width can be from several nanometers (nm) to several micrometers (µm), thereby making it possible to manufacture an emboss 5 having a precise macro and micro structure.

The device of the present invention as described above is preferably designed as follows so that the operation of the emboss 5 can be freely adjusted by automatically controlling its operation.

That is, the apparatus of the present invention is connected to the gas injector 200, the vertical movement means (500, Fig. 5) for freely moving the position of the gas injector 200 up, down, left and right, and the longitudinal movement means 500 It may be configured to further include a control unit (not shown) for controlling the movement direction of the. This vertical and horizontal movement means 500 allows to adjust the factors (shape, number, depth, width, etc.) of the emboss 5 by automatic control without variation of the initially installed device. That is, when the gas nozzle 210 is moved up and down by the control of the longitudinal movement means 500, the velocity of the gas injected at a constant speed is changed by the distance difference between the adhesive sheet 10 and the gas nozzle 210. Among the parameters of the emboss 5, in particular, the depth, width (engraved area) of the intaglio 5b can be adjusted. In addition, when the gas nozzle 210 is moved left and right under the control of the longitudinal movement means 500, the shape of the emboss 5 may be adjusted among the factors of the emboss 5.

The longitudinal movement means 500 may include a moving bar 510 connected to an upper end of the gas injector 200 and a driving part 520 for moving the moving bar 510 up, down, left, and right. For example, as shown in FIG. 6, the driving unit 520 moves a vertical movable member 521 to which a plurality of moving bars 510 are connected, and moves the vertical movable member 521 up and down (vertical direction). The first hydraulic cylinder 523 connected by the first piston rod 522 and the second hydraulic cylinder 231 moved to the left and right (lateral direction) and connected by the second piston rod 524. 525). And the control unit for controlling the longitudinal movement means 500 is in accordance with the conventional electrical, electronic structure.

In addition, according to the present invention, the number and shape of the emboss 5 can be determined in particular among the factors of the emboss 5 according to the number of the gas injectors 200 and the arrangement intervals of the gas injectors 200 as described above. In addition, the gas injector 200 may be provided with a flow control valve 220 to adjust the flow rate of the gas. That is, the flow rate control valve 220 is to finely control the diameter of the gas nozzle 210, even if a plurality of gas nozzles 210 in the form of a bundle in the gas injector 200 gas as possible It is good to provide for every nozzle 210. In the present invention, the flow regulating valve 220 includes a manual flow regulating valve and an electronic flow regulating valve (such as a solenoid valve). And, in the case of using the electronic flow control valve may be installed to control the control unit (not shown). At this time, the control unit for controlling the flow control valve 220 is preferably configured to control each of the gas nozzle (210). That is, one gas injector 200 is equipped with a plurality of gas nozzles 210, even if a plurality of gas injector 200 is installed in the device is configured to control each of the gas nozzles 210 as much as possible separately do. Such a control unit follows a conventional electrical and electronic structure.

In the case of adjusting the pressure and velocity of the gas injected from the gas nozzle 210 by adjusting the flow control valve 220 as described above, among the factors of the emboss 5, in particular, the number, depth, width, etc. of the emboss 5 may be adjusted. I can regulate it. That is, the number of embosses 5 can be adjusted by timely opening and closing according to the complete shutoff of the flow control valve 220 or the electronic control, and the depth and width of the embossing 5 can be changed by changing the velocity of the injected gas. I can regulate it.

In addition, the printing of the emboss 5 may be adjusted by the speed of the conveying means (400). That is, by installing a control unit (not shown) for controlling the speed of the conveying means 400, the depth and width of the emboss 5 can be adjusted according to the injection time of the gas. At this time, for example, the conveying means 400 is driven by a motor, the motor may be connected to the control unit using a conveyor belt capable of controlling the rotational speed.

According to the present invention, the gas nozzle 210 may have an integrated structure with the gas injector 200, but may be mounted to the gas injector 200 by a fastening structure 250 that is freely detachable. . At this time, the fastening structure 250 should be kept sealed. 7 illustrates a state in which the gas nozzle 210 is mounted by a screw structure as the fastening structure 250. That is, FIG. 7 shows a state in which threads are formed on the inner circumference of the main body 230 of the gas injector 200 and the outer circumference of the gas nozzle 210, respectively.                     

When the gas nozzle 210 is mounted as a fastening structure 250 that can be freely detached as described above, the gas nozzle 210 can be replaced so that the parameters of the emboss 5 can be adjusted. That is, the gas nozzle 210 is not particularly limited, but the diameter D of the distal end portion may be set from several nm to several tens of micrometers, and at this time, the diameter D is different depending on the setting of the target emboss 5. Since the gas nozzle 210 can be replaced at any time, the speed of the gas according to the change of the diameter (D) can be adjusted, so that the depth and width of the emboss 5 can be adjusted among the factors of the emboss 5.

In addition, the shape of the intaglio 5b formed corresponding to the cross-sectional shape of the gas nozzle 210 may be variously changed by replacing the gas nozzle 210 having various cross sections.

In particular, when the fastening structure 250 is a screw structure, the gas nozzle 210 can be freely replaced as well as the gas nozzle 210 can be moved up and down by screw rotation. It is possible to adjust the depth, width, etc. of the emboss 5 according to the change in distance between the gas nozzle 210 and.

In addition, the gas nozzle 210 includes a flat tube, a venturi tube and a streamlined tube. That is, as shown in the partial enlarged view of FIG. 7, the longitudinal section (vertical) internal structure is a flat tube having a constant diameter D in its longitudinal direction, or the Venturi neck 215 reduced at a predetermined point as shown in FIG. 8. A venturi tube having a shape may be used, and a streamlined tube (not shown) in which the end portion of the gas nozzle 210 is reduced in a straight line or a round shape may be used.

In particular, when the venturi tube as shown in FIG. 8 is used, supersonic speed is generated inside the nozzle to increase the embossing treatment efficiency even at a small gas pressure.                     

In addition, the gas nozzle 210 may have various shapes such as a cross section (horizontal direction) of the distal end of a circular shape, an oval shape, a polygonal shape (such as a rectangle including a triangle), and a star shape. The cross section of the distal end of the gas nozzle 210 affects the shape of the intaglio 5b formed corresponding thereto, and as described above, the intaglio 5b is replaced by the replacement of the gas nozzle 210 having various cross sections. The shape can be changed in various ways. In particular, when the pressure-sensitive adhesive (2) itself has a color, and the cross-sectional shape of the end of the gas nozzle 210 has a cross-section that can express a star shape or any aesthetic pattern, the emboss (5) beautiful on the pressure-sensitive adhesive sheet (10) Can be formed.

In addition, the apparatus of the present invention as described above may further comprise a housing (600). That is, it may include a housing 600 that supports the components of the device and may contain some components for external monotony of the device.

4 and 5, the adhesive sheet 10 is provided at both sides of the housing 600 with guide plates 610 through which the adhesive sheet 10 is introduced and discharged, and the gas sprayer is provided at the side at which the adhesive sheet 10 is introduced. 200 is positioned but the gas injector 200 is supported by the longitudinal movement means 500 mounted on the housing 600. At this time, the upper end of the water spraying machine 200 is connected to the moving bar 510, and the driving unit 520 for moving the moving bar 510 up, down, left and right is installed inside or outside the housing 600. 4 and 5 illustrate the driving unit 520 mounted inside the housing 600. In addition, the transfer means 400 to pass through the lower end of the housing 600, the curing unit 300 is positioned on the upper portion of the transfer means 400, the curing machine 300 is in the interior of the housing 600 Built in. In addition, the gas supply means 100 is installed above the housing 600 or embedded in the housing 600. 4 and 5 illustrate the gas supply means 100 is installed in the form exposed to the upper portion of the housing 600. In this case, the gas supply means 100 may be connected to the gas injector 200 by the flexible tube 150 to supply gas. In addition, the housing 600 is spaced apart from the ground by the support 700.

As described above, according to the apparatus of the present invention, the parameters of the emboss 5 can be automatically adjusted by the control unit. In this case, it is preferable that the control unit is more easily controlled through a computer program in connection with a computer. That is, the control unit for controlling the movement direction of the vertical and horizontal movement means 500, the control unit for controlling the flow rate control valve 220, and the control unit for controlling the feed rate of the transfer means 400 in one case each control unit Command control is possible through a computer program.

On the other hand, the manufacturing method of the adhesive sheet according to the present invention includes the following steps.

1) A step of continuously or discontinuously conveying the adhesive sheet 10 coated with the uncured adhesive 2 on the base sheet 1.

2) forming an emboss (5) by spraying a gas on the surface of the adhesive sheet (10).

3) hardening the adhesive sheet 10 having the emboss 5 formed thereon continuously or discontinuously.

In addition, the manufacturing method of the adhesive sheet according to the present invention preferably further comprises the step of adjusting the factors of the emboss 5 in addition to the above steps (1 to 3). Here, adjusting the factor of the emboss 5 is preceded by forming the emboss 5.

The manufacturing method of the present invention is characterized by a process of forming an emboss 5 by injecting a gas, and preferably using the apparatus of the present invention described above. Specifically, in the step of transferring the adhesive sheet 10 coated with the uncured adhesive 2 on the base sheet 1, the adhesive sheet 10 is continuously transferred using a conveying means 400 such as a conveyor belt. In the step of injecting the gas to form the emboss 5, the gas is injected by the gas nozzle 210 of the gas injector 200 in communication with the gas supply means 100 so that the emboss 5 is formed. In the curing of the pressure sensitive adhesive sheet 10, the pressure sensitive adhesive sheet 10 having the emboss 5 is continuously transferred to the hardener 300 by the transfer means 400, such as an ultraviolet curing machine, a thermosetting machine, an electron beam curing machine, and the like. It is to be cured by the curing machine (300).

In addition, in the step of adjusting the factors of the emboss 5 such as the number, shape, depth, width, etc. of the emboss 5, the following method may proceed.

In the manual adjustment of the parameters of the emboss 5, the factors of the emboss 5 can be adjusted by replacing the gas nozzles 210 having different diameters D or rearranging the number of gas injectors 200 and their arrangement intervals. have. In addition, by installing the flow control valve 220 in the gas nozzle 210, the flow control valve 220 may be manually controlled or the speed of the transfer means 400 may be adjusted to adjust the parameters of the embossing 5.

In automatically controlling the printing of the emboss 5, first, the longitudinal movement means 500 is connected to the gas injector 200, and the printing of the emboss 5 is controlled through a control unit for controlling the longitudinal movement means 500. It can be adjusted automatically, the second flow rate control valve 220 is installed on the gas nozzle 210 of the gas injector 200, and the parameters of the emboss (5) through the control unit for controlling the flow control valve 220 automatically It can be adjusted to, and through the control unit for controlling the speed of the third conveying means 400 can automatically adjust the parameters of the emboss (5). Preferably, each control unit is connected to a computer program so that it can be adjusted more easily and precisely.

According to the manufacturing method of the present invention as described above, the depth and width of the intaglio (5b) from several nanometers (nm) to several micrometers (㎛) by setting the diameter (D) and the injection speed of the gas nozzle 210 used It is possible to manufacture the pressure-sensitive adhesive sheet 10 in which the embossing 5 of the fine structure is formed.

In addition, as described above, it is possible to freely adjust the printing factor of the embossing 5, thereby optimizing the printing factor of the embossing 5, thereby producing an adhesive sheet 10 having excellent adhesion and peeling properties due to embossing. That is, the intaglio 5b depth h of the emboss 5 has 50-100% of the thickness H of the adhesive 2, and the area S1 of the relief 5a occupies 10-30% of the surface area. As such, the adhesive sheet 10 having high adhesion and peelability can be easily manufactured. In addition, the adhesive sheet 10 having the emboss 5 in various forms as shown in Figures 3a and 3b can be easily manufactured.

As described above, in the present invention, in forming the emboss 5, the gas is sprayed so that the depth h of the intaglio 5b is 50 to 100% of the thickness H of the pressure sensitive adhesive 2, and the relief is embossed. The area (S1) of (5a) is optimized to occupy 10-30% of the total area, thereby ensuring sufficient space for the air to escape smoothly while having sufficient adhesion to the object, thereby ensuring adhesion. This excellent, in particular, the trapping of a lot of air (trap) in the interior of the adhesive sheet 10 to be easily separated from the object to provide a pressure-sensitive adhesive sheet 10 excellent.

In addition, the manufacturing apparatus and method of the present invention is easy to form the emboss 5 by spraying the gas to form the emboss (5) by setting the diameter (D) and the injection speed of the gas nozzle 210 to be used There is an effect that the pressure-sensitive adhesive sheet 10 in which the emboss 5 having a microstructure of several micrometers (μm) is formed at nanometers (nm).

In addition, the manufacturing apparatus and method of the present invention can freely adjust the parameters of the emboss 5 such as the number, shape, depth, width, etc. of the emboss 5 by a simple operation, thereby adjusting the parameters of the emboss 5. Since it can be optimized, there is an effect capable of manufacturing the adhesive sheet 10 having high adhesion and peelability.

Claims (21)

delete In the adhesive sheet 10 in which the emboss 5 is formed, The emboss 5 is formed by gas injection, the depth h of the intaglio 5b is 50 to 100% of the thickness H of the pressure sensitive adhesive 2, and the area S1 of the relief 5a is Adhesive sheet with embossed, characterized in that occupies 10-30% of the total area. In the manufacturing apparatus of the adhesive sheet 10 in which the emboss 5 is formed, A gas supply means 100 for supplying a gas; A gas injector 200 in which the gas drawn from the gas supply means 100 is sprayed on the surface of the adhesive sheet 10 to form the emboss 5, and at least one gas nozzle 210 is mounted; A curing machine 300 for curing the pressure-sensitive adhesive sheet 10 in which the emboss 5 is formed by the gas injector 200; And a conveying means (400) for transferring the pressure-sensitive adhesive sheet (10) to the gas injector (200) and the curing machine (300). According to claim 3, wherein the manufacturing apparatus is connected to the gas injector 200, vertical and horizontal movement means for freely moving the position of the gas injector 200 up, down, left and right; The control unit for controlling the movement direction of the longitudinal movement means 500; Apparatus for producing a pressure-sensitive adhesive sheet characterized in that it further comprises. The method of claim 4, wherein the longitudinal movement means 500 comprises a moving bar 510 connected to the upper end of the gas injector 200, and the driving part 520 for moving the moving bar 510 up, down, left and right Apparatus for producing an adhesive sheet characterized in that. 6. The driving unit 520 is a vertically movable member 521 to which the moving bar 510 is connected, and the vertically movable member 521 is moved up and down (vertical direction), and the first piston rod 522 is moved. And a second hydraulic cylinder 523 connected by the first hydraulic cylinder 523 and the vertical movable member 521 to the left and right (lateral direction) and connected by the second piston rod 524. Apparatus for producing an adhesive sheet, characterized in that. According to claim 3, wherein the gas injector 200 is a manufacturing apparatus of the pressure-sensitive adhesive sheet, characterized in that the flow control valve 220 is installed to adjust the flow rate of the gas. The apparatus of claim 7, wherein the flow control valve is electronic and a control unit for controlling the flow control valve is installed. According to claim 3, wherein the conveying means 400 is an apparatus for manufacturing a pressure-sensitive adhesive sheet, characterized in that the conveyor belt capable of adjusting the speed. The apparatus of claim 3, wherein the curing machine is an ultraviolet curing machine, a thermosetting machine, or an electron beam curing machine. The apparatus of claim 3, wherein the gas nozzle 210 is mounted to the gas injector 200 by a fastening structure 250 that is freely detachable. The apparatus of claim 11, wherein the fastening structure (250) is a screw structure. The apparatus of claim 4, wherein the manufacturing apparatus further includes a housing 600, and the housing 600 includes guide plates 610 on which both sides of the adhesive sheet 10 flow in and out. The gas injector 200 is positioned on the side into which the sheet 10 is introduced, but the gas injector 200 is supported by the longitudinal movement means 500 installed in the housing 600, and the conveying means 400. Is allowed to pass through the lower end of the housing 600, the curing means 300 is placed on top of the conveying means 400, the curing machine 300 is embedded in the housing 600, the gas Supply means 100 is a manufacturing apparatus of the pressure-sensitive adhesive sheet, characterized in that installed in the form exposed to the upper portion of the housing 600. The apparatus of claim 3, wherein the gas nozzle 210 is a flat tube, a venturi tube, or a streamlined tube. The apparatus of claim 3, wherein the gas nozzle 210 has a circular, oval or polygonal cross section at its distal end. In the manufacturing method of the adhesive sheet in which the emboss 5 was formed, Transferring the pressure-sensitive adhesive sheet 10 coated with the uncured pressure-sensitive adhesive 2 to the base sheet 1 continuously or discontinuously; Forming an emboss (5) by spraying gas onto the surface of the adhesive sheet (10); And curing the adhesive sheet (10) on which the emboss (5) is formed while continuously or discontinuously transferring the adhesive sheet (10). The method of manufacturing a pressure sensitive adhesive sheet according to claim 16, further comprising adjusting a factor of the emboss (5). 18. The method of manufacturing a pressure-sensitive adhesive sheet according to claim 16 or 17, wherein the gas uses air. 18. The method of claim 17, wherein in the step of injecting the gas to form the emboss 5, the gas is injected by the gas nozzle 210 so that the emboss 5 is formed, and the factor of the emboss 5 is adjusted. In the step of manufacturing a pressure-sensitive adhesive sheet, characterized in that for controlling the printing of the emboss (5) by replacing the gas nozzle (210). 18. The method of claim 17, wherein the step of adjusting the factor of the emboss (5) is characterized in that the factor of the emboss (5) is adjusted by using the apparatus of any one of claims 4-9. Method of producing an adhesive sheet. 18. The method of claim 17, wherein in the step of adjusting the print factor of the emboss (5), the intaglio (5b) depth (h) of the emboss (5) to have 50 to 100% of the adhesive (2) thickness (H) Embossing (5a) of the area (5) (S1) is a manufacturing method of the pressure-sensitive adhesive sheet, characterized in that the manufacturing to adjust to occupy 10-30% of the total area.

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