KR101798414B1 - Apparatus and Method for removing bubble in adhesives - Google Patents

Abstract

An apparatus and method for removing bubbles from an adhesive are provided. The pressure-sensitive adhesive bubble removing device includes first and second holes, a mixer for receiving and agitating the pressure-sensitive adhesive, a first conveyance line connected to the first hole to allow the pressure-sensitive adhesive to escape from the mixer, A filter unit connected to the first transfer line and connected to the filter unit and the second hole to separate bubbles in the pressure sensitive adhesive from the pressure sensitive adhesive by the pressure, And a second conveyance line for recovering the scattering adhesive to the mixer.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a bubble removing device,

The present invention relates to an apparatus and a method for removing an adhesive bubble.

Unlike adhesives, adhesives are attached to the adhesive, but they do not damage the adhesive in the future even if the adhesive is removed. Such a pressure-sensitive adhesive may contain air bubbles in the process of being formed and stirred as a viscous liquid state. Accordingly, when the adhesive is coated on the tape in order to produce the adhesive tape, the bubbles may be mixed and the coating may not be completed properly.

Therefore, it is important to remove bubbles formed inside the pressure-sensitive adhesive. However, in order to remove air bubbles in the pressure sensitive adhesive, the cost increases when the bubble removing process is carried out, and the process time is greatly increased, resulting in a problem that productivity of the process is lowered.

Therefore, it is a time when an invention of an effective bubble removing method is required without increasing the increase of the process time and the cost.

Korea Patent Publication No. 2015-0123162

An object of the present invention is to provide a pressure-sensitive adhesive bubble removing device capable of removing bubbles in the pressure-sensitive adhesive while minimizing an increase in process time.

Another problem to be solved by the present invention is to provide a method of removing a bubble in a pressure-sensitive adhesive, which can remove bubbles in the pressure-sensitive adhesive while minimizing an increase in processing time.

The problems to be solved by the present invention are not limited to the above-mentioned problems, and other matters not mentioned can be clearly understood by those skilled in the art from the following description.

According to another aspect of the present invention, there is provided an apparatus for removing bubbles from a pressure sensitive adhesive, comprising: a mixer including first and second holes for receiving and agitating an adhesive; a first conveyance line connected to the first hole, A filter connected to the first transfer line and separating the bubbles in the pressure-sensitive adhesive from the pressure-sensitive adhesive by the pressure, and a filter unit connected to the filter unit and the second hole, And a second conveyance line for recovering the scattering adhesive, which is separated when the bubbles are separated, to the mixer.

Here, the filter unit may further include a coating unit for coating the pressure sensitive adhesive with the bubbles removed thereon.

Wherein the filter unit includes a tank in which the pressure-sensitive adhesive is partially filled, an inlet connected to the first transfer line and introducing the pressure-sensitive adhesive into the tank, and an inlet formed on the bottom surface of the tank, And a bubble outlet formed at an upper portion of the tank that is not in contact with the pressure-sensitive adhesive and connected to the second transfer line, and the bubble and the scattering adhesive are pushed out by the pressure, .

The separation of the bubbles can be performed while the adhesive is pushed out of the tank.

Wherein the filter portion includes first and second filters, wherein the first filter separates a first non-acidic pressure-sensitive adhesive which is separated as the first bubble and the first bubble are separated from the pressure-sensitive adhesive, The pressure-sensitive adhesive may be transferred from the first filter to separate the second non-acidic pressure-sensitive adhesive which is separated when the second bubble and the second bubble are separated from the pressure-sensitive adhesive.

Further comprising a first valve formed between the mixer and the pump on the first transfer line, the pump transferring the pressure-sensitive adhesive to the filter by the pressure when the first valve is opened, When one valve is locked, the filter may apply the pressure to the filter to separate the pressure sensitive adhesive and the bubble.

Here, the vacuum pump may further include a vacuum pump installed in the mixer and sucking bubbles in the pressure-sensitive adhesive.

According to another aspect of the present invention, there is provided a method for removing bubbles from a pressure sensitive adhesive, comprising: agitating a pressure sensitive adhesive contained in a mixer; transferring the pressure sensitive adhesive to a filter section; separating the pressure sensitive adhesive from bubbles in the pressure sensitive adhesive And recovering the scattering adhesive, which is separated when the bubbles are separated by the pressure, by the mixer.

Separating the bubbles from the adhesive may include separating the first bubbles from the adhesive in the first filter and separating the second bubbles from the separated adhesive in the second filter .

The method may further include separating the bubbles of the pressure-sensitive adhesive by a vacuum pump before transferring the pressure-sensitive adhesive to the filter unit.

The method may further include coating the pressure-sensitive adhesive on the tape after separating the bubbles in the pressure-sensitive adhesive.

Other specific details of the invention are included in the detailed description and drawings.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a conceptual diagram for explaining an adhesive bubble removing device according to some embodiments of the present invention. FIG.
FIG. 2 and FIG. 3 are conceptual diagrams for explaining the filter unit of the tackifier bubble removing device according to some embodiments of the present invention in detail.
4 is a conceptual diagram for explaining an adhesive bubble removing device according to some embodiments of the present invention.
5 is a conceptual diagram for explaining a mixer of a tackifier bubble removing device according to some embodiments of the present invention.
FIG. 6 is a flow chart for explaining a method of removing adhesive bubbles according to some embodiments of the present invention.
FIG. 7 is a flowchart for explaining the adhesive transfer step of the method of removing the adhesive bubbles according to some embodiments of the present invention in detail.
FIG. 8 is a flow chart for explaining the bubble separating step of the pressure-sensitive adhesive bubble removing method according to some embodiments of the present invention.
FIG. 9 is a flowchart for explaining a method of removing the adhesive bubbles according to some embodiments of the present invention.
10 is a flow chart for explaining a method of removing the adhesive bubbles according to some embodiments of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and the manner of achieving them will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Is provided to fully convey the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

One element is referred to as being "connected to " or" coupled to "another element, either directly connected or coupled to another element, One case. On the other hand, when one element is referred to as being "directly connected to" or "directly coupled to " another element, it does not intervene another element in the middle. Like reference numerals refer to like elements throughout the specification. "And / or" include each and every combination of one or more of the mentioned items.

Although the first, second, etc. are used to describe various elements, components and / or sections, it is needless to say that these elements, components and / or sections are not limited by these terms. These terms are only used to distinguish one element, element or section from another element, element or section. Therefore, it goes without saying that the first element, the first element or the first section mentioned below may be the second element, the second element or the second section within the technical spirit of the present invention.

The terminology used herein is for the purpose of illustrating embodiments and is not intended to be limiting of the present invention. In the present specification, the singular form includes plural forms unless otherwise specified in the specification. It is noted that the terms "comprises" and / or "comprising" used in the specification are intended to be inclusive in a manner similar to the components, steps, operations, and / Or additions.

Unless defined otherwise, all terms (including technical and scientific terms) used herein may be used in a sense commonly understood by one of ordinary skill in the art to which this invention belongs. Also, commonly used predefined terms are not ideally or excessively interpreted unless explicitly defined otherwise.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, referring to FIGS. 1 to 3, an apparatus for removing an adhesive bubbles according to some embodiments of the present invention will be described.

FIG. 1 is a conceptual view for explaining an adhesive bubble removing device according to some embodiments of the present invention, and FIGS. 2 and 3 are conceptual diagrams for explaining a filter portion of an adhesive bubble removing device according to some embodiments of the present invention .

Referring to FIGS. 1 to 3, an adhesive bubble removing device according to some embodiments of the present invention includes a mixer 10, a first conveyance line 20, a pump 30, a filter unit 40, (Coating portion 60 and coating portion 50).

The mixer 10 can receive the pressure-sensitive adhesive (A). The mixer 10 accommodates the pressure-sensitive adhesive (A) therein and can stir the same. The pressure-sensitive adhesive (A) is a liquid-type substance having high viscosity and can be agitated by stirring means inside the mixer (10). The mixer 10 includes an adhesive agent A therein, and the adhesive agent A can fill a part of the mixer 10.

The mixer 10 may include a first hole 11 and a second hole 12. The first hole 11 may be located below the mixer 10. The first hole 11 can serve as an outlet through which the pressure-sensitive adhesive A flows. The first hole 11 may be connected to the first transfer line 20.

The second hole 12 may be located at the top of the mixer 10. The second hole 12 may be located at a position where the adhesive A does not touch unlike the first hole 11. That is, since a portion of the mixer 10 can be filled with the adhesive agent A, the second hole can be formed at a position higher than the upper surface of the adhesive agent A filled in the mixer 10.

The bubbles B and the scattering adhesive S can be recovered to the mixer 10 through the second holes 12 at a later stage. This causes the bubbles B and the scattering adhesive S to flow in the second hole 12 located at a position higher than the upper surface of the adhesive agent A and the adhesive agent A and the scattering adhesive agent S naturally join together by gravity Can be mixed.

Although not shown in the figure, the mixer 10 may include an inflow hole into which the pressure-sensitive adhesive A is introduced. The pressure sensitive adhesive (A) can be introduced into the mixer (10) through the inlet holes. The inlet hole may be formed separately from the first hole 11 or the second hole 12 of the mixer 10, but is not limited thereto. That is, the first hole 11 or the second hole 12 may be an inflow hole of the pressure-sensitive adhesive (A).

The first transfer line 20 may be connected to the first hole 11. The first transfer line 20 may be a line connecting the first hole 11 and the filter unit 40, that is, a pipe through which the adhesive agent A is transferred. The first transfer line 20 may be provided with a pump 30, a first valve 21 and a second valve 22.

The pump 30 may be installed in the first transfer line 20 to apply pressure to the interior of the first transfer line 20. By the above pressure, the pump 30 can transfer the pressure-sensitive adhesive A in the first transfer line 20 to the filter portion 40. The pump 30 may also apply pressure to the air other than the pressure sensitive adhesive A within the first transfer line 20. This will be described later.

The pump 30 may apply pressure in the first transfer line 20 in a direction away from the first hole 11, i.e., the mixer 10. [ This pressure can be a driving force for transferring the pressure-sensitive adhesive (A) and the bubble B and the light-scattering adhesive (S) to be described later.

The first valve 21 may be a valve located between the pump 30 and the mixer 10. The first valve 21 can be opened when the pressure-sensitive adhesive A is conveyed. That is, when the first valve 21 is opened, the adhesive agent A in the mixer 10 exits the first conveyance line 20 through the first hole 11, (Not shown). At this time, of course, the second valve 22 may also be open.

When the first valve 21 is closed, the first transfer line 20 can be filled with air, not with the pressure-sensitive adhesive (A). At this time, the pump 30 can apply pressure to the air in the first conveyance line 20. Through this, the pump 30 can apply pressure to the filter unit 40. [ At this time, of course, the second valve 22 may also be open. Applying pressure to the filter portion 40 will be described later in detail.

Therefore, the role of the pump 30 can be changed according to the opening and closing of the first valve 21. [ That is, when the first valve 21 is opened, the transfer of the pressure sensitive adhesive A in the first transfer line 20 is performed by the pump 30, and when the first valve 21 is closed, Pressure can be applied to the filter portion 40 by the filter 30.

The second valve 22 may be a valve located between the pump 30 and the filter part 40. The second valve 22 may be in a substantially open state. However, the second valve 22 may be closed when the process of conveying the pressure-sensitive adhesive A is finished or when the pump 30 does not want to apply any further pressure to the filter portion 40. However, the present invention is not limited thereto.

The filter portion 40 can separate the pressure-sensitive adhesive A from the bubble B in the pressure-sensitive adhesive A. The pressure sensitive adhesive (A) in which the inner bubble (B) is separated can be conveyed through the third conveyance line (41). Further, the bubbles B separated from the pressure-sensitive adhesive (A) can be transferred to the second transfer line (60).

The filter portion 40 can also filter impurities in the pressure-sensitive adhesive (A). That is, it is possible to filter the solid impurities inadvertently introduced into or formed in the pressure-sensitive adhesive (A) during the inflow and outflow of the pressure-sensitive adhesive (A).

The second transfer line 60 can transfer the bubble B separated from the adhesive agent A in the filter section 40 to the mixer 10 again. At this time, the second transfer line 60 is formed not only of the bubbles B, that is, the gas formed in the pressure-sensitive adhesive A, but also the gas generated in the pressure-sensitive adhesive A separated from the pressure- It can be transferred to the mixer 10 again.

The third transfer line 41 can transfer the adhesive agent A to the coating section 50). The end of the third transfer line 41 may be connected to the coating portion 50). The end of the third transfer line 41 can discharge the adhesive agent A to the coating section 50).

Coating portion 50) can coat the adhesive agent A on at least one side of the tape T1 while the tape T1 is moving. The tape T1 may be a transparent or opaque adhesive tape, but is not limited thereto. In the pressure-sensitive adhesive bubble removing device according to some embodiments of the present invention, an adhesive such as a memo paper may be used in place of the tape. That is, it is also possible that the pressure-sensitive adhesive is coated with the pressure-sensitive adhesive (A).

2 and 3, the filter unit 40 includes a tank T, an inlet I, an adhesive outlet O1, and a bubble outlet O2.

The tank T can receive the pressure-sensitive adhesive (A). The tank T may be formed into a cylindrical shape as shown, but is not limited thereto. The bottom surface of the tank T may be convex outwardly so as to allow the pressure-sensitive adhesive A to escape to the pressure-sensitive adhesive outlet O1, but it is not limited thereto.

The tank T may be connected to the first conveyance line 20 through the inlet I. [ Further, the tank T may be connected to the third conveyance line 41 through the pressure-sensitive adhesive outlet O1. The tank T may be connected to the second conveyance line 60 through the bubble outlet O2. The pressure-sensitive adhesive (A) can be accommodated to fill a part of the tank (T). The upper surface of the pressure-sensitive adhesive (A) may be separated from the ceiling of the tank (T) by a predetermined distance (G).

The inlet (I) may be connected to the first transfer line (20). The inlet (I) may be formed on the side surface or the upper surface of the tank (T). That is, the inlet (I) can be formed at a position higher than the upper surface of the pressure-sensitive adhesive (A) accommodated in the tank (T). This is for the bubble separation operation to be described later. The inlet I may be an inlet through which the agitated adhesive A received in the mixer 10 and introduced into the tank T is introduced. Further, after the pressure-sensitive adhesive (A) has already been stored in the tank (T), it may be an inlet through which the pressure-applied air is introduced by the pump (30).

The pressure-sensitive adhesive outlet O1 may be formed on the bottom surface of the tank T. The pressure-sensitive adhesive outlet O1 may be an outlet through which the pressure-sensitive adhesive A introduced into the tank T flows out of the tank T by the gravity and the pressure applied by the pump 30. [ The pressure sensitive adhesive outlet O1 may be connected to the third conveying line 41. That is, the pressure sensitive adhesive (A) flowing out to the pressure sensitive adhesive outlet (O1) can be conveyed to the coating portion (50) through the third conveyance line (41).

The pressure sensitive adhesive outlet O1 may comprise a valve (V). The valve V may be connected to the pressure sensitive adhesive outlet O1. The valve V can be used as a path for removing the adhesive agent A remaining in the tank T. [ That is, the valve V may be opened to remove the pressure-sensitive adhesive (A) from the tank after the transferring process of the pressure-sensitive adhesive (A) is all finished or stopped. The valve V can be kept closed while the pressure-sensitive adhesive A is being conveyed.

The bubble outlet O2 may be formed in the ceiling of the tank T. [ The bubble outlet O2 may have a width W2 that is smaller than the width W1 of the pressure-sensitive adhesive outlet O1. The bubble outlet O2 can transfer bubbles B and scattering adhesive S separated from the pressure sensitive adhesive A received in the tank T to the mixer 10 again.

3, pressure can be applied to the air in the first conveyance line 20 by the pump 30. Accordingly, the air in the first transfer line 20 and the tank T can pressurize the upper surface of the pressure-sensitive adhesive A in a chain-like manner. Accordingly, the air bubble B, which is relatively lighter than the pressure-sensitive adhesive (A), may be urged in the upward direction in the pressure-sensitive adhesive (A).

Thus, the bubble B can be separated from the pressure-sensitive adhesive A and moved into the air of the tank T. [ At this time, since the upper surface of the pressure-sensitive adhesive (A) is highly viscous, a part of the pressure-sensitive adhesive (A) can be scattered and moved as the bubble (B) when the air bubble (B) rises. The scattered adhesive, that is, the scattering adhesive S can be recovered to the mixer 10 through the bubble outlet O2 and the second conveyance line 60. [ In this way, it is possible to separate the bubbles B and the pressure-sensitive adhesive (A) from each other and simultaneously recover the back-scattering pressure-sensitive adhesive (S) with the pressure-sensitive adhesive (A), thereby reducing the cost and improving the performance of the pressure- .

Further, the bubble separation operation may be performed in the middle of the transfer of the pressure-sensitive adhesive (A) by the pump (30). Therefore, since no separate process cost or process time is required for separating the bubbles B, not only the performance of the pressure-sensitive adhesive (A) but also the productivity of the pressure-sensitive adhesive (A) manufacturing process can be remarkably improved.

Hereinafter, with reference to FIG. 4, an apparatus for removing an adhesive agent according to some embodiments of the present invention will be described. The parts overlapping with the above-described embodiment are omitted or briefly described.

4 is a conceptual diagram for explaining an adhesive bubble removing device according to some embodiments of the present invention.

4, the filter unit 40 of the tackifier bubble removing apparatus according to some embodiments of the present invention includes a first filter 40c, a second filter 40b as a third filter 40a, The transfer line 60 includes a first bubble transfer line 60c, a second bubble transfer line 60b and a third bubble transfer line 60a.

The first filter 40c is connected to the first transfer line 20, separates the bubbles from the pressure-sensitive adhesive A, and discharges the bubbles to the first bubble transfer line 60c. Subsequently, the pressure-sensitive adhesive A is conveyed to the second filter 40b connected to the first filter 40c, the bubble is separated from the pressure-sensitive adhesive A in the second filter 40b, and is conveyed to the second bubble conveying line 60b . Subsequently, the pressure-sensitive adhesive A is conveyed to the third filter 40a connected to the second filter 40b, and the third filter 40a separates the air bubbles from the pressure-sensitive adhesive A to be conveyed to the third bubble conveying line 60a .

Finally, the third filter 40a is connected to the third transfer line 41, and the third transfer line 41 is capable of transferring the adhesive agent A to the coating part 50). The first bubble transfer line 60c, the second bubble transfer line 60b and the third bubble transfer line 60a are merged into the second transfer line 60 and the bubble B and the fog The pressure sensitive adhesive S can be transferred.

In other words, the apparatus for removing bubbles from the pressure-sensitive adhesive according to some embodiments of the present invention can improve the efficiency of removing bubbles by providing a plurality of filters in the filter unit 40. Since the plurality of filters are connected to each other in series, bubble separation and adhesive transfer can be performed automatically by the pump 30. In the figure, three filters are exemplarily shown, but this is only one example, and the number of filters is not limited.

Hereinafter, with reference to Figs. 1 and 5, an apparatus for removing an adhesive agent according to some embodiments of the present invention will be described. The parts overlapping with the above-described embodiment are omitted or briefly described.

5 is a conceptual diagram for explaining a mixer of a tackifier bubble removing device according to some embodiments of the present invention.

Referring to FIGS. 1 and 5, the pressure-sensitive adhesive bubble removing device according to some embodiments of the present invention may further include a vacuum pump 15.

The vacuum pump 15 may be formed in combination with the mixer 10. The vacuum pump 15 can suck the bubble B of the pressure-sensitive adhesive A contained in the mixer 10. Accordingly, the pressure-sensitive adhesive (A) can be separated from the inner bubble (B).

That is, in some embodiments of the present invention, some of the bubbles B in the pressure sensitive adhesive A are removed in the mixer 10 by the vacuum pump 15, and then the pressure sensitive adhesive The remaining bubbles B in the pressure-sensitive adhesive agent A can be removed from the filter unit 40 in a secondary process.

Hereinafter, with reference to Figs. 1 to 8, a description will be given of a method of removing adhesive bubbles according to some embodiments of the present invention. The overlapping portions of the above-mentioned pressure-sensitive adhesive bubble forming apparatus are omitted or simplified.

FIG. 6 is a flow chart for explaining the method of removing the adhesive bubbles according to some embodiments of the present invention, and FIG. 7 is a flowchart for explaining the adhesive conveying step of the adhesive bubble removing method according to some embodiments of the present invention in detail. FIG. 8 is a flow chart for explaining the bubble separating step of the pressure-sensitive adhesive bubble removing method according to some embodiments of the present invention.

1 and 6, the pressure-sensitive adhesive (A) is stirred (S100).

The mixer 10 can receive the pressure-sensitive adhesive (A). The mixer 10 accommodates the pressure-sensitive adhesive (A) therein and can stir the same. The pressure-sensitive adhesive (A) is a liquid-type substance having high viscosity and can be agitated by stirring means inside the mixer (10). The mixer 10 includes an adhesive agent A therein, and the adhesive agent A can fill a part of the mixer 10.

Then, the pressure-sensitive adhesive (A) is transferred to the filter unit 40 (S200).

The first transfer line 20 may be connected to the first hole 11. The first transfer line 20 may be a line connecting the first hole 11 and the filter unit 40, that is, a pipe through which the adhesive agent A is transferred. The first transfer line 20 may be provided with a pump 30, a first valve 21 and a second valve 22.

Referring to FIGS. 1 and 7, firstly, the first valve 21 is opened (S210).

Thus, the pressure-sensitive adhesive A in the mixer 10 can be passed through the pump 30 through the first conveyance line 20.

Subsequently, the pressure sensitive adhesive (A) is transferred to the filter unit 40 by the pump 30 (S220).

That is, the pump 30 may be installed in the first transfer line 20 and apply pressure to the first transfer line 20. By the above pressure, the pump 30 can transfer the pressure-sensitive adhesive A in the first transfer line 20 to the filter portion 40.

Subsequently, the first valve 21 is closed (S230).

The adhesive agent A in the mixer 10 is no longer introduced into the first conveyance line 20 and all the adhesive agent A in the first conveyance line 20 is conveyed to the filter section 40 The pump 30 can apply pressure to the air in the first transfer line 20. [

3 and 6, the bubble B in the pressure-sensitive adhesive A is separated from the pressure-sensitive adhesive A (S300).

Pressure can be applied to the air in the first transfer line 20 by the pump 30. Accordingly, the air in the first transfer line 20 and the tank T can pressurize the upper surface of the pressure-sensitive adhesive A in a chain-like manner. Accordingly, the air bubble B, which is relatively lighter than the pressure-sensitive adhesive (A), may be urged in the upward direction in the pressure-sensitive adhesive (A).

Thus, the bubble B can be separated from the pressure-sensitive adhesive A and moved into the air of the tank T. [ The bubble separation operation may be performed in the middle of the transfer of the pressure-sensitive adhesive (A) by the pump (30). That is, separation of the bubbles B and transfer of the pressure-sensitive adhesive A can proceed in parallel without stopping the process.

Referring to FIGS. 4 and 8, in some embodiments of the present invention, the bubble B and the pressure-sensitive adhesive A may be separated through a plurality of processes.

That is, in the first filter 40c, the pressure sensitive adhesive A and the bubble B are primarily separated (S310).

Subsequently, the pressure sensitive adhesive (A) and the bubble (B) are secondarily separated in the second filter (40b) (S320).

In other words, the apparatus for removing bubbles from the pressure-sensitive adhesive according to some embodiments of the present invention can improve the efficiency of removing bubbles by providing a plurality of filters in the filter unit 40.

Next, referring again to Figs. 1 and 6, the scattering-sticking agent (S) is recovered.

When the bubble B and the pressure-sensitive adhesive A are separated from each other, the upper surface of the pressure-sensitive adhesive A is highly viscous, so that a part of the pressure-sensitive adhesive A can be scattered and moved like the bubble B. The scattered adhesive, that is, the scattering adhesive S can be recovered to the mixer 10 through the bubble outlet O2 and the second conveyance line 60. [ In this way, it is possible to separate the bubbles B and the pressure-sensitive adhesive (A) from each other and simultaneously recover the back-scattering pressure-sensitive adhesive (S) with the pressure-sensitive adhesive (A), thereby reducing the cost and improving the performance of the pressure-

Hereinafter, with reference to Figs. 1, 5 and 9, a description will be given of a method of removing the adhesive bubbles according to some embodiments of the present invention. The overlapping portions of the above-mentioned pressure-sensitive adhesive bubble forming apparatus and method are omitted or simplified.

FIG. 9 is a flowchart for explaining a method of removing the adhesive bubbles according to some embodiments of the present invention.

Referring to FIGS. 1, 5 and 9, the method of removing adhesive bubbles according to some embodiments of the present invention further includes one step (S150).

That is, after the step (S100) of stirring the pressure-sensitive adhesive (A), the bubble (B) in the pressure-sensitive adhesive (A) is separated from the pressure-sensitive adhesive (A) by using the vacuum pump (1550).

The vacuum pump 15 may be formed in combination with the mixer 10. The vacuum pump 15 can suck the bubble B of the pressure-sensitive adhesive A contained in the mixer 10. Accordingly, the pressure-sensitive adhesive (A) can be separated from the inner bubble (B).

That is, in some embodiments of the present invention, some of the bubbles B in the pressure sensitive adhesive A are removed in the mixer 10 by the vacuum pump 15, and then the pressure sensitive adhesive The remaining bubbles B in the pressure-sensitive adhesive agent A can be removed from the filter unit 40 in a secondary process.

Accordingly, the method of removing the adhesive bubbles according to some embodiments of the present invention can more completely remove the bubbles B inside the adhesive agent A.

Hereinafter, with reference to Figs. 1 and 10, a description will be given of a method of removing the adhesive bubbles according to some embodiments of the present invention. The overlapping portions of the above-mentioned pressure-sensitive adhesive bubble forming apparatus and method are omitted or simplified.

10 is a flow chart for explaining a method of removing the adhesive bubbles according to some embodiments of the present invention.

Referring to FIGS. 1 and 10, the method of removing adhesive bubbles according to some embodiments of the present invention further includes one step (S500).

That is, after the step S400 of recovering the scattering adhesive S, the adhesive agent A is coated on the tape T1 (S500).

The coating portion 50 can coat the adhesive agent A on at least one surface of the tape T1 while the tape T1 is moving. The tape T1 may be a transparent or opaque adhesive tape, but is not limited thereto. In the pressure-sensitive adhesive bubble removing device according to some embodiments of the present invention, an adhesive such as a memo paper may be used in place of the tape. That is, it is also possible that the pressure-sensitive adhesive is coated with the pressure-sensitive adhesive (A).

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, You will understand. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive.

10: Mixer 20: 1st conveying line
30: pump 40: filter section
50: coating part 60: second conveying line

Claims (11)

A mixer including first and second holes, wherein the adhesive is received and stirred;
A first conveying line connected to the first hole to allow the adhesive to escape from the mixer;
A pump for applying pressure to the first transfer line;
A filter unit connected to the first transfer line and separating bubbles in the pressure-sensitive adhesive from the pressure-sensitive adhesive by the pressure; And
And a second conveyance line connected to the filter portion and the second hole, for collecting the scattering adhesive, which is separated when the bubbles are separated, into the mixer,
The filter unit includes a tank in which the pressure-sensitive adhesive is partially filled,
An inlet connected to the first transfer line for introducing the adhesive into the tank and formed higher than an upper surface of the adhesive,
A pressure-sensitive adhesive outlet formed on a bottom surface of the tank, the pressure-sensitive adhesive having the bubbles removed by the pressure,
And a bubble outlet formed at an upper portion of the tank not in contact with the pressure sensitive adhesive and connected to the second transfer line, wherein the bubble and the scattering adhesive are pushed out by the pressure. The method according to claim 1,
And a coating unit coating the pressure sensitive adhesive on which the air bubbles have been removed from the filter unit, on the tape. delete The method according to claim 1,
Wherein the separation of the bubbles is performed while the adhesive is pushed out of the tank. The method according to claim 1,
Wherein the filter portion includes first and second filters,
Wherein the first filter separates the first non-acidic pressure-sensitive adhesive which is separated when the first bubble and the first bubble are separated from the pressure-sensitive adhesive,
Wherein the second filter receives the pressure sensitive adhesive from the first filter and separates the second non-acidic pressure sensitive adhesive separated as the second air bubble and the second air bubble are separated from the pressure sensitive adhesive. The method according to claim 1,
Further comprising a first valve formed between the mixer and the pump on the first transfer line,
The pump transfers the pressure-sensitive adhesive to the filter when the first valve is opened, and when the first valve is locked, the filter applies the pressure to the filter to separate the pressure-sensitive adhesive and the bubble A pressure-sensitive adhesive bubble removing device. The method according to claim 1,
And a vacuum pump installed in the mixer for sucking air bubbles in the pressure sensitive adhesive. The pressure-sensitive adhesive contained in the mixer was stirred,
The pressure sensitive adhesive is transferred to the filter portion,
Separating the pressure-sensitive adhesive from bubbles in the pressure-sensitive adhesive by the pressure of the pump,
And recovering the scattering agent, which is separated when the bubbles are separated by the pressure, with the mixer,
Separating the pressure-sensitive adhesive from bubbles,
Wherein the adhesive is introduced into the tank through the inlet, wherein the inlet is formed higher than the upper surface of the adhesive,
Wherein the pressure sensitive adhesive is pushed to a pressure sensitive adhesive outlet formed on a bottom surface of the tank according to a pressure of the pump, and the bubbles and the scattering pressure sensitive adhesive are pushed out to a bubble outlet formed on an upper surface of the tank. 9. The method of claim 8,
Separating the bubbles from the pressure-
In the first filter, the first bubble is separated from the pressure-sensitive adhesive,
And separating the second bubble from the pressure-sensitive adhesive in which the first bubble is separated, in the second filter. 9. The method of claim 8,
Further comprising separating the bubbles of the pressure-sensitive adhesive by a vacuum pump before transferring the pressure-sensitive adhesive to the filter portion. 9. The method of claim 8,
Further comprising coating the pressure sensitive adhesive on a tape after separating the air bubbles inside the pressure sensitive adhesive.

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