KR102141413B1 - Waterproof tape comprising micro air layer and manufacturing method thereof - Google Patents

Abstract

The present invention is a micro unit on at least one side of the pressure-sensitive adhesive layer through a physical method of passing a forming roll provided with a constant width gap of micro units so as to form a micro air layer on a thermoplastic resin surface that is deformable during compression. It relates to a waterproof tape comprising a micro-air layer having the air dam, and a method of manufacturing the air dam, which is formed at regular width intervals of the first adhesive layer; An air layer having air dams formed at regular width intervals in micro units on at least one side of the first adhesive layer; A base layer formed on one surface of the air layer; A second adhesive layer formed on one surface of the base layer; And a release paper formed on one surface of the second adhesive layer, wherein the gap is formed through a physical method of passing a forming roll composed of a regular width gap of micro units, and a waterproof tape comprising a micro air layer. And a method for manufacturing the same.

Description

WATERPROOF TAPE COMPRISING MICRO AIR LAYER AND MANUFACTURING METHOD THEREOF}

The present invention relates to a waterproof tape comprising a micro air layer and a method for manufacturing the same, in detail, a molding having a constant width interval in micro units so as to form a micro air layer on a surface of a thermoplastic resin that can be deformed during compression. It relates to a waterproof tape comprising a micro-air layer having the air dam, and a method for manufacturing the same, by forming an air dam having a constant width interval in micro units on at least one side of the pressure-sensitive adhesive layer through a physical method of passing the roll. .

Double-sided tape is mainly used to fix components of packaging of electronic devices such as LCDs, OLEDs, and PDPs, as well as mobile phones, cameras, and music players. However, due to the nature of the tape, the adhesive force is weakened by moisture, and as a result, it is difficult for parts to obtain complete adhesion to each position, so that the operation of the electronic device may not be properly performed. In addition, since there is a limit to increase the adhesion, a function capable of blocking moisture is required.

On the other hand, as a general waterproof tape technology, there are Korean Patent Registration No. 10-1625605 buffer tape with light leakage prevention and waterproof function, buffer tape with light leakage prevention function and Korean Patent Publication No. 10-2016-0058842 adhesive tape and electronic devices. Mainly as a waterproofing polymer, polyurethane or polyethylene terephthalate is used, or foams of olefin, urethane, and acrylic materials are used, but there may be a problem in that waterproof performance is deteriorated due to non-uniformity and distribution of foam.

In addition, there is a tape produced by mixing hollow particles in a resin layer for the purpose of improvement thereof, but the uniformity of the hollow layer due to the degree of mixing and dispersion in the resin layer and the manufacturing process variables when a structural layer for shock relief is formed It can be difficult to ensure fine uniformity because one dispersibility is difficult to achieve.

In addition, since there is a limit to the ratio in which the air layer can be secured to the entire volume of the resin layer inside the hollow body, it may be difficult to secure sufficient shock absorption properties.

Therefore, it is possible to secure a uniform shock absorption strength with an air layer including an air dam having a constant width interval in micro units by a physical method, and an air dam is configured at a constant width interval in micro units, so that even after a thin width punching process, The situation is that a tape having a stable waterproof function is required by the air dam.

KR 10-1625605 KR 10-2016-0058842

An object of the present invention is to form a physically formed air dam that can secure a uniform shock absorption strength, including an air dam made of regular width intervals in micro units, and a waterproof tape comprising a micro air layer containing the air dam and It is to provide a manufacturing method.

Another object of the present invention is that the air layer is provided with an air dam made of a predetermined width interval in micro units on at least one side of the pressure-sensitive adhesive layer, so that it can have a stable waterproof function by the air layer partition wall even after a thin-width punching process. It is to provide a waterproof tape comprising a micro-air layer formed by and a manufacturing method thereof.

A waterproof tape comprising a micro air layer according to the present invention for achieving this object includes a first adhesive layer; An air layer having air dams formed at regular width intervals in micro units on at least one side of the first adhesive layer; A base layer formed on one surface of the air layer; A second adhesive layer formed on one surface of the base layer; And a release paper formed on one surface of the second adhesive layer, and the gap may be formed through a physical method of passing a forming roll composed of a regular width gap in micro units.

In one preferred example of the present invention, the regular width interval of the micro-unit is 10um to 1,000um, and the air dam may have a height of 10um to 1,000um.

In one preferred example of the present invention, the air layer may include a space formed of at least one or more shapes selected from circular and polygonal shapes when cutting horizontally.

In one preferred example of the present invention, the air layer may include at least one or more selected from polyethylene, polypropylene, polyurethane, polyacrylic, polyethylene terephthalate, and rubber.

In one preferred example of the present invention, the air layer forms a first film layer on one surface, and the second adhesive layer may further include a second film layer on one surface.

On the other hand, the present invention provides a method for manufacturing a waterproof tape comprising a micro-air layer. Specifically, in one preferred example of the present invention, a method for manufacturing a waterproof tape comprising a micro-air layer according to the present invention includes: ) Forming a resin layer by applying a resin on the base layer; (b) applying heat and pressure to the resin layer to form an air dam by molding with a forming roll; (c) forming an adhesive layer by applying an adhesive to the upper portion of the air dam and the lower portion of the base layer; And (d) preparing a waterproof tape by attaching release paper to the surface of the pressure-sensitive adhesive layer applied to the lower portion of the base layer.

Here, the forming roll of step (b) is in a closed shape, and the width interval may be constant to 10um to 1,000um.

In one preferred example of the present invention, in the step (c), an air layer is formed by adhering a film on top of the air dam, and the air layer has a space formed of at least one shape selected from circular and polygonal shapes when horizontally cut. It can contain.

In one preferred example of the present invention, in step (c), after attaching separate film layers for strengthening the air space on the air dam, the adhesive layer is formed by applying adhesive to the upper and lower portions of the base layer. Step; may further include.

In one preferred example of the present invention, the base layer of step (a) may be a base layer to which a release-treated film is applied.

And in one preferred example of the present invention, the substrate layer to which the release-treated film is applied may further include a step of removing after step (b).

As described above, the waterproof tape including the micro-air layer according to the present invention is regularly provided with a micro unit width interval and a micro unit width interval of the air dam is regularly regular by a forming roll formed in a closed shape. It has the effect of being arranged.

In addition, the waterproof tape including the micro-air layer according to the present invention has an effect of having a uniform impact absorption strength, including a micro-air layer having an air dam in which the width spacing of micro units is constant.

In addition, the waterproof tape comprising the micro-air layer according to the present invention has an effect capable of securing sufficient absorption capacity even at a thin thickness, including a micro-air layer having an air dam in which the width spacing of micro units is constant.

In addition, the waterproof tape comprising the micro-air layer according to the present invention has the effect that the size and shape of the forming roll can be physically adjusted, thereby physically controlling the size and shape of the air dam.

In addition, the waterproof tape comprising the micro-air layer according to the present invention has the effect that the size and shape of the forming roll can be physically controlled, thereby increasing the waterproof performance and the impact mitigation effect.

In addition, the waterproof tape comprising the micro-air layer according to the present invention includes a micro-air layer having an air dam in which the width spacing of micro units is constant, and even after the thin-wall punching process according to the product shape, it is applied to each air layer partition wall. There is an effect capable of securing a stable waterproof performance.

In addition, the waterproof tape including the micro air layer according to the present invention has an effect that can be used for fixing the module.

1 is a schematic view schematically showing a waterproof tape including a micro air layer according to the present invention.
2 is a schematic view schematically showing a process of forming a micro air layer according to the present invention.
3 is a view showing a space constituting the micro-air layer according to the present invention and its diameter.
4 is a schematic view schematically showing a method of manufacturing a waterproof tape comprising a micro air layer according to the present invention.

The following description of the present invention refers to specific embodiments in which the present invention may be practiced. These examples are described in detail enough to enable those skilled in the art to practice the present invention. It should be understood that the various embodiments of the invention are different, but need not be mutually exclusive. For example, specific shapes, structures, and characteristics described herein may be implemented in other embodiments without departing from the technical spirit and scope of the invention in connection with one embodiment.

Therefore, the following detailed description is not intended to be taken in a limiting sense, and the scope of the present invention, if appropriately described, is limited only by the appended claims, along with all ranges equivalent to those claimed.

In addition, although the first and second are used to describe various components in the present invention, it goes without saying that these components are not limited by these terms. These terms are only used to distinguish one component from another component.

Hereinafter, preferred embodiments of the present invention will be described in detail in order to enable those skilled in the art to easily implement the present invention.

As described above, the conventional waterproof tape is difficult to secure uniformity due to the non-uniformity of mixing and dispersing the hollow particles in the resin layer due to the non-uniformity and distribution of foam using foam foam. there was. In addition, there is a limit to the ratio of securing the air layer to the total volume of the resin layer inside the hollow body, which makes it difficult to secure sufficient shock absorption properties.

Accordingly, in the present invention, the pressure-sensitive adhesive layer is passed through a molding roll having a constant width of micro-units that can form an air dam having a constant width of micro-units on a thermoplastic resin surface that can be deformed upon compression on a cross-section of the base layer. To form an air layer having an air dam made of a predetermined width interval in micro units on at least one side of the.

Specifically, hereinafter, a waterproof tape including a micro air layer according to the present invention will be described with reference to the drawings.

A waterproof tape is provided that includes a physically formed micro air layer according to an embodiment of the present invention. The waterproof tape of the present invention provides excellent waterproof performance including a micro air layer. The micro air layer is formed on the surface of the resin layer by applying at least one selected from a thermoplastic resin and a soft resin that can be deformed upon compression to the end face of the base layer.

Referring to FIG. 1, a waterproof tape including a micro air layer according to an embodiment of the present invention includes a first adhesive layer; An air layer having air dams formed at regular width intervals in micro units on at least one side of the first adhesive layer; A base layer formed on one surface of the air layer; A second adhesive layer formed on one surface of the base layer; And a release paper formed on one surface of the second adhesive layer.

The constant width interval of the micro unit according to an embodiment of the present invention may include 10um to 1,000um, preferably 10um to 500um, more preferably 10um to 200um for stable waterproof performance. If the width gap includes less than 10um or exceeds 1,000um, it is difficult to obtain stable waterproof or impact resistance performance.

3, the height of the air dam according to an embodiment of the present invention includes 10um to 1,000um, preferably 50um to 500um for the impact prevention performance of the air layer, and more preferably 50um to 300um for stable production can do. When the height of the air dam is less than 10um or exceeds 1,000um, it is difficult to obtain an impact prevention performance of the air layer, and stable manufacturing may not be achieved.

Referring to FIG. 3, the micro-air layer according to an embodiment of the present invention may include a space formed by at least one or more shapes selected from circular and polygonal shapes during horizontal cutting.

The air layer according to an embodiment of the present invention may include at least one or more selected from polyethylene, polypropylene, polyurethane, polyacrylic, polyethylene terephthalate, and rubber.

The micro air layer according to an embodiment of the present invention may form a first film layer on one surface, and the second adhesive layer may further include a second film layer on one surface.

In addition, the waterproof tape including the micro air layer according to an embodiment of the present invention may include forming a pressure-sensitive adhesive layer on one or both sides based on a film of a physically formed air layer.

In addition, referring to FIG. 1, a waterproof tape including a micro air layer according to an embodiment of the present invention may include a first film layer under the first adhesive layer. In addition, an air layer may be included under the film layer. In addition, a second film layer or a base layer may be included under the air layer. In addition, a second adhesive layer formed on the lower portion of the air layer or the base layer may be included. In addition, a release paper may be included under the second adhesive layer. In addition, the first film layer may be replaced with an adhesive.

In addition, the waterproof tape including the micro-air layer according to an embodiment of the present invention may apply a release-treated film to the base layer when soft characteristics are required due to the curved structure. The release-treated film may be removed after the air layer is formed, and soft performance may be imparted to the waterproof tape of the present invention.

In addition, referring to Figure 2, the air dam according to an embodiment of the present invention, the air dam made of a constant width gap in micro units by passing through a molding roll having a constant micro-width gap on the surface of the resin layer that can be deformed during compression. It can be physically formed.

The air layer according to an embodiment of the present invention is molded into a molding roll provided with a constant width in micro units by applying heat and pressure to the resin layer, and the resin constituting the resin layer is selected from a thermoplastic resin and a soft resin layer. It may include at least one or more.

In addition, the thermoplastic resin and the soft resin layer according to an embodiment of the present invention are polyethylene, polypropylene, polyethylene terephthalate, polycarbonate, polyvinyl chloride, acrylonitrile butadiene styrene, polyimide, polyurethane , Acrylic, silicone, epoxy, natural or synthetic rubber, and may include at least one or more of a single substance or a mixture of two or more selected from the group consisting of.

In addition, the micro air layer according to an embodiment of the present invention may be formed by bonding an adhesive layer or a film layer so as to act as a cover on the surface where the air dam is formed.

The base layer according to an embodiment of the present invention may include at least one or more selected from polyethylene terephthalate (PET), polypropylene (PP), polyethylene (PE), polyurethane (PU) and polyimide (PI). have.

In addition, the film layer according to an embodiment of the present invention may include at least one or more selected from polyethylene terephthalate (PET), polypropylene (PP), polyethylene (PE) and polyimide (PI), preferably May include polyethylene terephthalate (PET).

In addition, the pressure-sensitive adhesive layer according to an embodiment of the present invention may include at least one or more selected from acrylic, rubber, silicone and urethane.

In addition, the release paper according to an embodiment of the present invention is for the protection and peeling of the product, and the release agent is coated, and according to the present invention, it can be replaced with a film.

On the other hand, the present invention provides a method of manufacturing a waterproof tape comprising the above-described micro air layer.

Hereinafter, a method of manufacturing a waterproof tape including a micro air layer according to the present invention will be described in more detail with reference to the drawings.

4 is a view schematically showing a method of manufacturing a waterproof tape comprising a micro air layer according to the present invention.

Referring to Figure 4, the method of manufacturing a waterproof tape comprising a micro-air layer according to the present invention comprises the steps of forming a resin layer by applying a resin on top of the base layer (S100); Forming an air dam by applying heat and pressure to the resin layer to form a molding roll (S200); Forming an adhesive layer by applying an adhesive to the upper portion of the air dam and the lower portion of the base layer (S300); And preparing a waterproof tape by attaching release paper to the surface of the pressure-sensitive adhesive layer applied to the lower portion of the substrate layer (S400).

Referring to Figure 2, the forming roll of the step (S200) according to the present invention is a closed shape, the width interval can be configured to be constant to 10um to 1,000um.

Further, according to the present invention, the forming roll can physically adjust the size and shape. Therefore, the size and shape of the air dam can also be physically controlled by the forming roll. As a result, the waterproof performance and the impact mitigation effect may increase.

According to the present invention, in the step (S300), an air layer is formed by adhering a separate film to the upper portion of the air dam to strengthen the air space, and the air layer has at least one or more shapes selected from circular and polygonal shapes during horizontal cutting. It may include a space consisting of.

The base layer of the step (S100) according to the present invention may include a base layer to which the release-treated film is applied.

According to the present invention, the base layer to which the release-treated film is applied may further include a step of removing after step (b). When soft characteristics are required due to the structure of the curve, the release-treated film is applied to the base layer to remove the air layer after formation, thereby providing soft performance to increase the flexibility of the waterproof tape.

Hereinafter, the present invention will be described in more detail through the following examples, which are presented to help the understanding of the present invention, but the present invention is not limited thereto.

<Example 1>

A thermoplastic resin was applied on the base layer of PET to form a resin layer. By applying heat and pressure to the resin layer, it was physically molded into a molding roll formed in a shape of a closed shape at micro-unit intervals to form an air layer comprising an air dam having a constant width of 200 μm in micro units and a height of 100 μm. . Meanwhile, an adhesive was prepared by including an acrylic system, and an adhesive was applied to the air dam and the base layer to form an adhesive layer. A waterproof tape was prepared by attaching release paper to the surface of the pressure-sensitive adhesive layer applied to the lower portion of the base layer.

<Comparative Example 1>

A waterproof tape was prepared in the same manner as in Example 1, except that the width of the air dam was 1,000 μm.

<Comparative Example 2>

A waterproof tape was prepared in the same manner as in Example 1, except that the width of the air dam was 500 μm.

<Comparative Example 3>

A waterproof tape was prepared in the same manner as in Example 1, except that the width of the air dam was 100 μm.

<Comparative Example 4>

A waterproof tape was prepared in the same manner as in Example 1, except that the width of the air dam was 50 μm.

<Comparative Example 5>

A waterproof tape was prepared in the same manner as in Example 1, except that the width of the air dam was 20 μm.

<Comparative Example 6>

A waterproof tape was prepared in the same manner as in Example 1, except that the height of the air dam was 50 μm.

<Comparative Example 7>

A waterproof tape was prepared in the same manner as in Example 1, except that the height of the air dam was 200 μm.

<Comparative Example 8>

A waterproof tape was prepared in the same manner as in Example 1, except that the height of the air dam was 500 μm.

<Comparative Example 9>

A waterproof tape was prepared in the same manner as in Example 1, except that the height of the air dam was 1,000 μm.

<Comparative Example 10>

A waterproof tape was prepared in the same manner as in Example 1, except that the polyolefin-based foam (density 0.3 g/cm ³ ) was included.

<Comparative Example 11>

A waterproof tape was prepared in the same manner as in Example 1, except that the foam foam density (0.2 g/cm ³ ) of the urethane material was included.

<Comparative Example 12>

A waterproof tape was prepared in the same manner as in Example 1, except that the micro air layer was not included.

[Experimental Example 1]

Waterproofing test

The waterproofness was tested using the waterproof tapes of Examples 1, Comparative Examples 1 to 5 and Comparative Examples 10 to 12.

For the measurement method, a 48mm x 48mm width, 3mm thick glass plate and a 60mm x 60mm width, 6.5mm thick polycarbonate plate are prepared, and a water-immersion label that changes color when the water comes into contact with the center of the polycarbonate is 27mm x 27mm wide. Attached to, and cut the waterproof tape prepared in Examples and Comparative Examples in a rectangular shape having a size of 48mm x 48mm and a width of 0.5mm to prepare an attached specimen on the outside of the glass plate. The waterproof tapes prepared in Examples and Comparative Examples of the prepared glass specimens were pressed with 5kg pressure for 5 seconds with the polycarbonate immersion label in the center to fix the specimens. Subsequently, the sample was taken out for 30 minutes at a depth of 1 m in an immersion tank, and the color of the immersion label was measured.

In addition, if it is judged that the immersion label is discolored and becomes immersed, the GRADE is lowered to meet the conditions of waterproof IP (International Protection) for liquids according to the international protection class IEC529, and the color of the immersion label is measured according to the conditions. It is shown in Table 1 below.

Item Waterproof (IP GRADE) Example 1 8 Comparative Example 1 2 Comparative Example 2 4 Comparative Example 3 8 Comparative Example 4 8 Comparative Example 5 8 Comparative Example 10 6 Comparative Example 11 6 Comparative Example 12 8

In Table 1 above, IP GRADE 8 means that it can be protected from immersion even after being immersed for a long time and receiving water pressure, IP GRADE 6 is protected from water sprayed at high pressure in all directions, and IP GRADE 4 is protected from spray in all directions And IP GRADE 2 means that it is protected from falling water by about 15°.

When using the waterproof tape according to the present invention as in the results of Table 1, it can be seen that more waterproof properties can be realized compared to Comparative Examples 10 and 11 according to the width design of the air dam.

[Experimental Example 2]

Waterproofing test according to specimen width

The waterproofness was tested using the waterproof tapes of Examples 1, Comparative Examples 1 to 5 and Comparative Examples 10 to 12.

For the measurement method, a 48mm x 48mm wide, 3mm thick glass plate and a 60mm x 60mm wide, 6.5mm thick polycarbonate plate are prepared, and the water-immersed label, which becomes discolored when water comes into contact with the center of the polycarbonate, is 27mm x 27mm wide. Attached, the waterproof tapes prepared in Examples and Comparative Examples were cut into a rectangular shape having various widths of 48 mm x 48 mm to prepare adhesive specimens on the outside of the glass plate. The waterproof tapes prepared in Examples and Comparative Examples of the prepared glass specimens were placed with the immersion label of polycarbonate in the center, and then pressed with 5 kg of pressure for 5 seconds to fix the specimens. Subsequently, the sample was taken out for 30 minutes at a depth of 1 m in an immersion tank, and the color of the immersion label was measured.

In addition, if it is judged that the immersion label is discolored and becomes immersed, the GRADE is lowered to meet the conditions of waterproof IP (International Protection) for liquids according to the international protection class IEC529, and the color of the immersion label is measured according to the conditions. It is shown in Table 2 below.

IP GRADE 1.0mm 0.5mm 0.25mm 0.1mm 0.05mm Example 1 8 8 8 4 0 Comparative Example 1 2 One 0 0 0 Comparative Example 2 5 4 One 0 0 Comparative Example 3 8 8 8 5 2 Comparative Example 4 8 8 8 6 4 Comparative Example 5 8 8 8 7 7 Comparative Example 10 8 6 5 3 One Comparative Example 11 8 6 4 3 One Comparative Example 12 8 8 8 7 7

<IP GRADE>

When using the waterproof tape according to the present invention as shown in the results of Table 2, it can be confirmed that more waterproof properties can be realized compared to Comparative Examples 10 and 11 according to the width design of the air dam in accordance with the width reduction of the waterproof tape. In the case of Comparative Example 10 and Comparative Example 11, a sudden decrease in waterproof performance was observed when the width of the waterproof tape was reduced due to the irregular size of the foam air layer.

[Experimental Example 3]

Impact resistance evaluation experiment

The waterproof tapes of Examples 1 and 6 to 12 were evaluated using DuPont Type Impact Test equipment.

The evaluation method is to attach the tape processing sample (standard: 15.5mm x 15.5mm x 0.7mm wide rim type) of the standard specification to be tested to the adherend surface (PC or Mg), and then wash the glass to the test jig assembly jig. The test specimen assembled using a standard crimping machine is pressurized once with 5kgf for 5 seconds, and then the impact is applied in the vertical direction of the Tpae attachment direction to drop the weight (gram) and drop when the test specimen breaks (glass detachment or lifting). After checking the height (mm) and recording, the impact energy (mJ) was measured.

Impact energy (J) = mass (kg) * gravitational acceleration (9.8m/s ² ) * height (m)

The impact energy (mJ) of Examples and Comparative Examples was measured through the measured impact energy, and the results are shown in Table 3 below.

Item Impact resistance (mJ) Example 1 147 Comparative Example 6 123 Comparative Example 7 221 Comparative Example 8 343 Comparative Example 9 490 Comparative Example 10 245 Comparative Example 11 221 Comparative Example 12 49

Impact resistance within the scope of the present invention, as in the results of Example 1 and Comparative Examples 6 to 12 of Table 3 can be adjusted according to the height of the air dam.

In addition, as in Comparative Example 12, it was confirmed that it is not suitable as a waterproof tape because it has excellent waterproof performance but hardly absorbs shock when there is no air layer.

Therefore, in order to satisfy the performance including water resistance and impact resistance in the case of polyolefin, urethane and acrylic foams, the size and distribution of the particles to be foamed during manufacturing must be uniform, but in the foaming process by chemical foaming or heat, physical molding rolls are required. It is impossible to have a uniform particle size and distribution, such as a waterproof tape including a manufactured micro air layer, and there may be a problem in that waterproof performance deteriorates.

However, in the case of the micro-air layer of the present invention, regardless of the size and shape of the punch, by combining the examples of the above experimental examples, it is possible to manufacture a waterproof tape in any desired size and shape of the structure.

All of the embodiments described above are exemplary, and of course, the different embodiments can be applied in combination with each other.

610: first adhesive layer 611: first film layer
612: air layer 613: base layer
614: second adhesive layer 615: release paper
710: forming roll 810: micro unit width gap
910: Air dam

Claims (10)

A first adhesive layer;
A first film layer under the first adhesive layer;
An air layer having an air dam formed at a predetermined width interval in micro units under the first film layer;
A base layer formed under the air layer;
A second adhesive layer formed under the base layer; And
It includes a release paper formed under the second adhesive layer,
The gap is formed through a physical method of passing a forming roll composed of a regular width gap in micro units,
The micro-unit has a constant width interval of 10 um to 1,000 um, and the air dam has a height of 10 um to 1,000 um, which is a waterproof tape comprising a micro air layer.
delete According to claim 1,
The air layer is a waterproof tape comprising a micro-air layer, characterized in that it comprises a space consisting of at least one or more shapes selected from circular and polygonal when cutting horizontally.
According to claim 1,
The air layer is a waterproof tape comprising a micro air layer, characterized in that it comprises at least one or more selected from polyethylene, polypropylene, polyurethane, polyacrylic, polyethylene terephthalate and rubber.
delete (a) forming a resin layer by applying a resin on the base layer;
(b) applying heat and pressure to the resin layer to form an air dam by molding with a forming roll;
(c) forming an adhesive layer by applying an adhesive to the upper portion of the air dam and the lower portion of the base layer; And
(d) preparing a waterproof tape by attaching a release paper to the surface of the adhesive layer applied to the lower portion of the base layer;
The forming roll of step (b) is in a closed shape, and the width interval is constant from 10um to 1,000um,
A method of manufacturing a waterproof tape comprising a micro air layer, characterized in that an adhesive layer is formed after adhering a separate film layer on the air dam in step (c).
delete The method of claim 6,
In the step (c), an air layer is formed by adhering a film to the top of the air dam, and the air layer includes a space formed of at least one shape selected from circular and polygonal shapes when horizontally cut. Method of manufacturing a waterproof tape comprising a.
The method of claim 6,
The method of manufacturing a waterproof tape comprising a micro-air layer characterized in that the base layer of step (a) is a base layer to which a release-treated film is applied.
delete

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