WO2021145665A1 - Eco-friendly one-sided antioxidant adhesive tape for water tank sealing, method for manufacturing same, and water tank module using same - Google Patents

Abstract

Provided are an eco-friendly one-sided antioxidant adhesive tape for water tank sealing, a method for manufacturing same, and a water tank module using same. The one-sided adhesive tape comprises: a base film; a first adhesive layer disposed on the base film; a release film disposed on the first adhesive later; and a second adhesive layer disposed on the release film.

Description

One-sided bonding type eco-friendly anti-oxidation bonding tape for water tank sealing, manufacturing method thereof, and water tank module using same

The present invention relates to an eco-friendly anti-oxidation bonding tape for sealing a water tank, a manufacturing method thereof, and a water tank module using the same, and more particularly, to a bonding tape including a release film, a manufacturing method thereof, and a water tank module. More particularly, the present invention relates to a one-sided bonding type eco-friendly anti-oxidation bonding tape including a release film, a manufacturing method thereof, and a water tank module.

Bonding articles, such as bonding tapes, have been used to join members in various fields. The bonding tape is usually bonded to the skin adhesion by using the adhesive force or adhesive force of the bonding layer, including the bonding layer. In this case, the bonding layer may be protected by attaching a release film that is easy to peel in order to maintain the adhesion or adhesion activity of the bonding layer.

On the other hand, the bonding tape can be roughly divided into a double-sided bonding tape and a single-sided bonding tape. The double-sided bonding tape is configured such that, in a state in which the release film is removed, bonding layers are disposed on both sides of the base film to bond two skin complexes facing each other. On the other hand, the one-sided bonding tape is configured such that, in a state in which the release film is removed, the bonding layer is disposed only on one side of the base film to bond two adjacent skin complexes.

Patent Document 1 (Korean Patent Registration No. 10-1694182 (Jan. 3, 2017)) discloses a bonding tape having a microstructured surface. The bonding tape of patent document 1 contains a bonding member and a release liner. Patent Document 1 is mainly characterized in that the surface of the bonding member is microstructured, so that the bonding force between the skin complex and the bonding member is improved. Moreover, patent document 1 shows the state in which the bonding tape was rolled in the longitudinal direction and wound up.

However, when the bonding tape of Patent Document 1 is rolled and stored, there is a problem in that the roll is easily released. That is, since the bonding tape cannot completely maintain a wound state, it may cause inconvenience in storage and operation. In addition, since the bonding tape maintains a taut shape in a wound state, it may cause damage to the bonding tape.

On the other hand, adhesive tape can be used to seal the water tank. Since the adhesive tape for sealing a water tank is continuously exposed to moisture in contact with water, it should have low moisture permeability and substantially no solubility in water. If the adhesive tape is soluble in water, harmful substances can be ingested by humans.

Accordingly, the problem to be solved by the present invention is to provide a one-sided bonding type bonding tape that improves workability, is easy to store, and does not damage the structure of the bonding tape. Another object of the present invention is to provide a one-sided bonding type adhesive tape for sealing a water tank that has substantially no solubility in water, is environmentally friendly, and has excellent waterproof properties.

Another object to be solved by the present invention is to provide a one-sided bonding type bonding tape in a rolled state that improves workability, is easy to store, and does not damage the structure of the bonding tape.

In addition, another object to be solved by the present invention is to provide a method of manufacturing a one-sided bonding type bonding tape that improves workability, is easy to store, and does not damage the structure of the bonding tape.

Another object to be solved by the present invention is to provide a water tank module using a sealing adhesive tape that does not show any harm to the human body.

The problems of the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned will be clearly understood by those skilled in the art from the following description.

One-sided bonding type eco-friendly anti-oxidation bonding tape according to an embodiment of the present invention for solving the above problems, a base film; a first bonding layer disposed on the base film; a release film disposed on the first bonding layer; and a second bonding layer disposed on the release film.

The base film may include a polyethylene foam film or an ethylene vinyl acetate foam film.

The release film may include a polyvinyl chloride film or a polyethylene terephthalate film.

In addition, the second bonding layer may include an acrylic copolymer, toluene, and ethyl acetate.

The second bonding layer may include 25 wt% to 35 wt% of the acrylic copolymer.

The second bonding layer may include 14 wt% to 19 wt% of toluene.

In addition, the second bonding layer may include 47 wt% to 61 wt% of the ethyl acetate.

A modulus of the first bonding layer may be greater than a modulus of the second bonding layer.

In addition, a thickness of the first bonding layer may be greater than a thickness of the second bonding layer.

In addition, the release film has one surface in contact with the second bonding layer, and the other surface in contact with the first bonding layer, and the release film is coated only on the other side, and is coated with silicone, polyethylene, or polyolefin. state may be

The release film may have a plurality of through holes.

In addition, the second bonding layer may be at least partially inserted into the through hole, so that the second bonding layer may be in contact with the first bonding layer and inner walls of the through hole.

One-sided bonding adhesive tape according to an embodiment of the present invention for solving the other problem is rolled along the longitudinal direction.

Here, the bonding tape may include a base film; a first bonding layer disposed on the base film; a release film disposed on the first bonding layer; and a second bonding layer disposed on the release film, wherein the rolled bonding tape is rolled such that the second bonding layer faces outward and the base film faces inward, and the bonding tape is rolled In, it characterized in that the upper surface of the second bonding layer is attached in contact with the lower surface of the base film.

In a method for manufacturing a one-sided bonding type eco-friendly anti-oxidation bonding tape according to an embodiment of the present invention for solving the another problem, a first bonding layer composition is applied on one side of a base film, and the base film and the release film are attaching; applying a second bonding layer composition on the release film and winding the base film and the release film, winding the second bonding layer composition to contact the other surface of the base film to form a roll; and aging the wound roll at 35° C. to 50° C. for 48 hours or more.

Here, the composition of the first bonding layer composition and the composition of the second bonding layer composition may be different.

The second bonding layer composition is a step of mixing an acrylic copolymer, toluene and ethyl acetate, and 25 to 35% by weight of the acrylic copolymer, 14 to 19% by weight of the toluene, and 47% by weight of the ethyl acetate % to 61% by weight; And it may be prepared including the step of aging the mixture at 40 ℃ to 50 ℃ 48 hours or more.

According to an embodiment of the present invention, there is provided a water tank module, comprising: a plurality of water tank modules; and a bonding tape sealing between the plurality of water tank units.

Here, the bonding tape may be a bonding tape according to an embodiment of the present invention.

The details of other embodiments are included in the detailed description.

According to embodiments of the present invention, one-sided bonding type eco-friendly anti-oxidation bonding tape with improved workability and easy storage, one side bonding type eco-friendly anti-oxidation bonding tape in a rolled state, manufacturing method and seal of eco-friendly anti-oxidation bonding tape A ringed water tank module may be provided.

In addition, it is possible to provide a one-sided bonding adhesive tape having excellent eco-friendliness and waterproof properties without damaging the structure of the bonding tape, a one-sided bonding bonding tape in a rolled state, a manufacturing method of the bonding tape, and a sealed water tank module. there is.

Effects according to the embodiments of the present invention are not limited by the contents exemplified above, and more various effects are included in the present specification.

1 is a cross-sectional view of a one-sided bonding type eco-friendly anti-oxidation bonding tape according to an embodiment of the present invention.

2 is a cross-sectional view of a one-sided bonding type eco-friendly anti-oxidation bonding tape according to another embodiment of the present invention.

3 is a cross-sectional view of a one-sided bonding type eco-friendly anti-oxidation bonding tape according to another embodiment of the present invention.

4 is a cross-sectional view illustrating a rolled state of the bonding tape of FIG. 1 .

5 and 6 are cross-sectional views showing a bonding tape having a structure in contrast to the present invention.

7 and 8 are cross-sectional views showing a bonding tape having a structure in contrast to the present invention.

9 is a flowchart illustrating a method of manufacturing a one-sided bonding type eco-friendly anti-oxidation bonding tape according to an embodiment of the present invention.

FIG. 10 is a schematic diagram showing the manufacturing method of FIG. 9 .

11 is a photograph of an environmentally friendly anti-oxidation bonding tape prepared according to Example 7.

12 is a photograph of a water tank module using the eco-friendly anti-oxidation bonding tape prepared according to Example 7. FIG.

13 is a photograph of a bonding tape prepared according to Comparative Example 18;

14 is a photograph of a bonding tape prepared according to Comparative Example 19.

15 is a photograph of an environmentally friendly anti-oxidation bonding tape prepared according to Example 8.

16 is a photograph of a bonding tape prepared according to Comparative Example 20.

Advantages and features of the present invention and methods of achieving them will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in various different forms, and only the embodiments allow the disclosure of the present invention to be complete, and those of ordinary skill in the art to which the present invention pertains. It is provided to fully inform the person of the scope of the invention, and the present invention is only defined by the scope of the claims.

Spatially relative terms 'above', 'upper', 'on', 'below', 'beneath', 'lower', etc. As shown, it can be used to easily describe the correlation between one element or elements and another element or elements. Spatially relative terms should be understood as terms including different orientations of the device when used in addition to the orientations shown in the drawings. For example, when an element shown in the drawing is turned over, an element described as 'below or beneath' of another element may be placed 'above' of the other element. Accordingly, the exemplary term 'down' may include both the downward and upward directions.

The size, thickness, width, length, etc. of the components shown in the drawings may be exaggerated or reduced for convenience and clarity of description, so that the present invention is not limited to the illustrated form.

The terminology used herein is for the purpose of describing the embodiments and is not intended to limit the present invention. In this specification, 'and/or' includes each and every combination of one or more of the mentioned items. The singular also includes the plural, unless the phrase specifically states otherwise. As used herein, 'comprises' and/or 'comprising' does not exclude the presence or addition of one or more other elements in addition to the stated elements. Numerical ranges indicated using 'to' indicate numerical ranges including the values stated before and after them as lower and upper limits, respectively. 'About' or 'approximately' means a value or numerical range within 20% of the value or numerical range recited thereafter.

Unless otherwise defined, all terms (including technical and scientific terms) used herein may be used with the meaning commonly understood by those of ordinary skill in the art to which the present invention belongs. In addition, terms defined in a commonly used dictionary are not to be interpreted ideally or excessively unless clearly defined in particular.

As used herein, the term 'bonding' is a concept including 'adhesion' and 'adhesion'.

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

1 is a cross-sectional view of a one-sided bonding type bonding tape 10 according to an embodiment of the present invention.

Referring to FIG. 1 , an environmentally friendly anti-oxidation bonding tape 10 according to an embodiment of the present invention includes a base film 100 , a first bonding layer 310 and a release film 200 , and a second bonding layer. (320) may be further included. In the bonding tape 10 , when the release film 200 and the second bonding layer 320 are removed, only the base film 100 and the first bonding layer 310 may remain. Accordingly, the bonding tape 10 may function as a one-sided bonding type bonding tape. Although only a portion of the bonding tape 10 is shown in FIG. 1 , they may be in the form of a sheet extended in a plane or a strip shape extending in the longitudinal direction. In addition, although not represented in FIG. 1 , the bonding tape 10 may be in a rolled and wound state.

The base film 100 may maintain the overall shape of the bonding tape 10 and stably support an upper component, for example, the first bonding layer 310 . The base film 100 may have relatively high strength and low elasticity compared to the first bonding layer 310 . In addition, the base film 100 may have flexibility.

In an exemplary embodiment, the base film 100 may include a polyethylene (PE) form film or an ethylene vinyl acetate (EVA) form film, specifically polyethylene It may include a foam film. The polyethylene foam film has advantages of high waterproofness and low water vapor permeability and water absorption rate compared to other films, such as urethane foam, acrylic foam, polyvinyl chloride, and the like. Therefore, there is an effect that the bonding tape 10 according to the present embodiment can be used for sealing the water tank. In addition, when the base film 100 includes polyvinyl chloride or the like, when used for sealing the water tank, the chlorine component in the base film 100 is dissolved in water, which is undesirable in terms of hygiene. On the other hand, in the present invention, since the base film 100 does not contain chlorine, it is hygienic and has an environmentally friendly effect. In addition, the polyethylene foam film has an excellent effect in peeling from the second bonding layer 320 according to the present invention to be described later. This will be described later in detail.

The release film 200 may be disposed on the base film 100 . The release film 200 is at least partially spaced apart from the base film 100 , and the first bonding layer 310 may be interposed therebetween. That is, the base film 100 and the release film 200 may be coupled by the first bonding layer 310 . In some embodiments, the first bonding layer 310 may directly contact the base film 100 and the release film 200 .

The release film 200 may be a member for protecting the surface of the first bonding layer 310 . That is, when the first bonding layer 310 is a pressure-sensitive bonding layer, the first bonding layer 310 may maintain an appropriate adhesive strength or adhesive strength and durability at room temperature. In this case, the bonding force of the first bonding layer 310 may be affected by the degree of contamination of the surface, surface energy, elasticity of the surface, moisture content of the surface, and the like. Accordingly, the first bonding layer 310 may be protected by disposing the release film 200 on the first bonding layer 310 .

The release film 200 may include a base film such as paper or plastic. The release film 200 may have relatively high strength and low elasticity compared to the first bonding layer 310 . In addition, the release film 200 may have flexibility.

Examples of materials suitable for use in the release film 200 include polypropylene (PP), polybutene, polybutadiene, polymethylpentene, polyvinyl chloride, Polyethylene terephthalate (polyethylene terephtalate), polyurethane (polyurethane), etc. are mentioned. In some embodiments, polyvinyl chloride or polyethylene terephthalate material may be preferable in terms of adhesion with the second bonding layer 320 to be described later.

In some embodiments, the release film 200 may be in a surface-treated state or in a coated state to facilitate peeling from the first bonding layer 310 . For example, the release film 200 may be in a state in which the upper surface (based on FIG. 1) is surface-treated or uncoated, and only the lower surface (based on FIG. 1) is surface-treated or coated. Through this, peeling between the release film 200 and the first bonding layer 310 may be facilitated, while peeling between the release film 200 and the second bonding layer 320 may be difficult. That is, the bonding force between the release film 200 and the first bonding layer 310 may be smaller than the bonding force between the release film 200 and the second bonding layer 320 . The coating may include a silicone coating (or laminate), a polyethylene coating (or laminate), and/or a polyolefin coating (or laminate).

The thickness of the release film 200 may be greater than the thickness of the base film 100 .

The first bonding layer 310 may be disposed between the base film 100 and the release film 200 . The first bonding layer 310 may be bonded to the base film 100 and the release film 200 . The first bonding layer 310 may be a layer that substantially performs a bonding function in the bonding tape 10 after the release film 200 and the second bonding layer 320 are removed. That is, when the bonding tape 10 is used, it may be a layer that performs final bonding with the skin complex. Therefore, it may be preferable that the first bonding layer 310 is made of a material capable of exhibiting sufficient modulus and bonding strength. The bonding force between the first bonding layer 310 and the base film 100 may be greater than the bonding strength between the first bonding layer 310 and the release film 200 .

The first bonding layer 310 may be a pressure-sensitive adhesive layer or a pressure-sensitive adhesive layer, but the present invention is not limited thereto. The first bonding layer 310 may be made of a material that performs a well-known adhesion or adhesion function. For example, (meth) acrylate ((meth) acrylate) polymer, vinyl (vinyl) polymer, butyl (butyl) polymer, silicone (silicon) polymer, styrene (styrene) polymer, and/or combinations thereof. can

The second bonding layer 320 may be disposed on the release film 200 . Specifically, it may be disposed on the upper surface of the release film 200 with reference to FIG. 1 . The second bonding layer 320 may be directly disposed on the upper surface of the release film 200 . The upper surface of the second bonding layer 320 of the bonding tape 10 may remain exposed to the air. That is, a separate component may not be disposed on the second bonding layer 320 . In some embodiments, in a state in which the bonding tape 10 is rolled and wound, the second bonding layer 320 may be in contact with the base film 100 of the bonding tape 10 positioned outside in the circumferential direction. However, even in this case, when the bonding tape 10 is unwound in order to use the bonding tape 10 , the upper surface of the second bonding layer 320 is exposed as well. Those skilled in the art can clearly understand that There will be.

The second bonding layer 320 may be a temporary bonding layer or a temporary adhesive layer for maintaining the bonding tape 10 in a rolled state. Accordingly, the second bonding layer 320 preferably has a relatively small modulus and bonding strength, and the first bonding layer 310 and the second bonding layer 320 may have different compositions. For example, the modulus of the second bonding layer 320 may be smaller than the modulus of the first bonding layer 310 . The bonding force between the second bonding layer 320 and the release film 200 may be greater than the bonding strength between the second bonding layer 320 and the base film 100 . Also, the thickness of the second bonding layer 320 may be smaller than the thickness of the first bonding layer 310 . The thickness of the second bonding layer 320 is made relatively small to facilitate peeling between the second bonding layer 320 and the base film 100 , and the thickness of the first bonding layer 310 is made relatively large to allow the adhesion of the skin. It can provide excellent bonding properties with

In an exemplary embodiment, the second bonding layer 320 may include an acrylic copolymer, toluene, and ethyl acetate. The inventor of the present invention invented a novel bonding layer that did not exist in the conventional bonding tape, namely, the second bonding layer 320 . In addition, unlike the conventional bonding tape, the second bonding layer 320 maintains a firm bond with the release film 200 while the bonding tape 10 is rolled while the second bonding layer 320 is the base film 100 . ) and the composition of the second bonding layer 320 and the material of the base film 100 were researched and developed so as to be easily peeled off, resulting in the completion of the present invention.

In some embodiments, the second bonding layer 320 may include an acrylic copolymer, toluene, and ethyl acetate, and a weight ratio between them may have a specific relationship. For example, the second bonding layer 320 may include 25 wt% to 35 wt% of the acrylic copolymer, 14 wt% to 19 wt% of toluene, and 47 wt% to 61 wt% of ethyl acetate. .

If the weight of ethyl acetate exceeds 61% by weight, the second bonding layer 320 and the base film 100 according to this embodiment, in particular, the second bonding layer 320 when the base film 100 is a polyethylene foam film. The peeling of the rear surface of the polyethylene foam film and the polyethylene foam film is not easy, and the second bonding layer 320 may partially remain on the rear surface of the polyethylene foam film.

On the other hand, when the weight of ethyl acetate is less than 47% by weight, the second bonding layer 320 and the base film 100 according to this embodiment, in particular, the second bonding layer 320 when the base film 100 is a polyethylene foam film. The bonding force between the back surface of the polyethylene foam film and the polyethylene foam film may be too weak, which may not be sufficient to achieve the effect according to the present invention.

If the weight of toluene is less than 14% by weight, miscibility with ethyl acetate may be lowered and thus complete bonding strength may not be exhibited. On the other hand, when the weight of toluene exceeds 19% by weight, the second bonding layer 320 may not exhibit stable bonding strength. For example, a difference in bonding force of the second bonding layer 320 may occur depending on the temperature, and thus reliability may not be guaranteed.

Meanwhile, the weight ratio between the acrylic copolymer and toluene may be about 8:12 to 9:12, or about 8:11 to 9:11.

Meanwhile, the thickness of the second bonding layer 320 may be about 5 μm to 15 μm, or about 8 μm to 12 μm, or about 10 μm. When the thickness of the second bonding layer 320 is 15 μm or more, it may not be easy to separate the second bonding layer 320 from the base film 100 .

In some embodiments, the overall thickness of the bonding tape 10 may be between about 2 mm and 5 mm, or between about 3 mm and 4 mm.

Hereinafter, other embodiments of the present invention will be described. However, a description of the same configuration as that of the bonding tape 10 described above will be omitted, which will be clearly understood by those skilled in the art from the accompanying drawings.

2 is a cross-sectional view of the one-sided bonding type bonding tape 12 according to another embodiment of the present invention.

Referring to FIG. 2, the upper surface of the release film 200 of the environmentally friendly anti-oxidation bonding tape 12 according to this embodiment is different from the bonding tape 10 according to FIG. 1 in that it has grooves or grooves. .

The upper surface of the release film 200 facing the second bonding layer 322 may have a groove. In this case, the maximum thickness of the release film 200 may be greater than the thickness of the base film 100 . In some embodiments, the minimum thickness of the release film 200 may be smaller than the thickness of the base film 100 . The grooves may be plural in the longitudinal direction of the bonding tape 12 . In addition, the grooves may extend along the width direction of the bonding tape 12 or may be arranged in plurality.

The second bonding layer 322 is disposed on the release film 200 , and may at least partially fill the groove of the release film 200 . Accordingly, the second bonding layer 322 may contact the inner wall of the groove. Also, the minimum thickness of the second bonding layer 322 may be smaller than the thickness of the first bonding layer 310 .

The bonding tape 12 according to the present embodiment may further improve bonding strength between the release film 200 and the second bonding layer 322 . When the bonding tape 12 in a rolled state is unwound through this, the second bonding layer 322 is easily peeled off from the base film 100 and the second bonding layer 322 remains intact on the release film 200 . can make it easier to

3 is a cross-sectional view of the one-sided bonding type eco-friendly anti-oxidation bonding tape 14 according to another embodiment of the present invention.

Referring to FIG. 3 , the release film 200 of the environmentally friendly anti-oxidation bonding tape 14 according to the present embodiment is different from the bonding tape 10 according to FIG. 1 in that it has a through hole.

The release film 200 may have a through hole penetrating in the thickness direction. The through-holes may be plural in the longitudinal direction of the bonding tape 14 . In addition, the through-holes may be plural along the width direction of the bonding tape 14 .

The second bonding layer 324 is disposed on the release film 200 , and may at least partially fill the through hole of the release film 200 . Accordingly, the second bonding layer 324 may contact the inner wall of the through hole. In some embodiments, the second bonding layer 324 may be inserted into the through hole to contact the first bonding layer 310 . Through this, the bonding state between the first bonding layer 310 and the release film 200 in the initial state may be strengthened. Also, the minimum thickness of the second bonding layer 324 may be smaller than the thickness of the first bonding layer 310 .

The environmentally friendly anti-oxidation bonding tape 14 according to the present embodiment may further improve the bonding force between the release film 200 and the second bonding layer 324 . When the bonding tape 14 in the rolled state is unwound through this, the second bonding layer 324 is easily peeled off from the base film 100 and the second bonding layer 324 remains intact on the release film 200 . can make it easier to

Hereinafter, with further reference to FIGS. 4 to 8 , effects of the present invention will be described by taking the bonding tape 10 according to the embodiment of FIG. 1 as an example. However, those skilled in the art will clearly understand that the effect of the bonding tape 10 according to the present embodiment can be equally applied to the effects of the bonding tape according to FIGS. 2 and 3 .

4 is a cross-sectional view illustrating a rolled state of the bonding tape 10 of FIG. 1 . In addition, FIGS. 5 and 6 are cross-sectional views showing a bonding tape having a structure in contrast to the present invention. Specifically, FIG. 5 is a cross-sectional view of a bonding tape having a structure in contrast to the present invention, and FIG. 6 is the bonding tape of FIG. 5 rolling. It is a cross-sectional view showing the state. 7 and 8 are cross-sectional views showing a bonding tape having a structure in contrast to the present invention, specifically, FIG. 7 is a cross-sectional view of a bonding tape having a different structure in contrast to the present invention, and FIG. It is a cross-sectional view showing the state.

The structure of the bonding tape shown in FIGS. 5 to 8 does not mean the prior art or the background art, and the inventor of the present invention came up with an alternative structure in the process of completing the present invention to highlight the effect of the present invention. It should be noted that this is shown for That is, it should be understood that the structures of FIGS. 5 to 8 are also included in the technical spirit of the present invention.

First, further referring to FIG. 4 , the eco-friendly anti-oxidation bonding tape 10 according to the present embodiment may be in a rolled and wound state. 4 shows two layers of a wound roll. That is, the bonding tape 10 shown in FIG. 1 may be in a state of being laminated in the outer circumferential direction (upper side of FIG. 4 ). In other words, the second bonding layer 320 may be rolled toward the outer circumferential direction (upper side based on FIG. 4 ), and the base film 100 may be rolled toward the circumferential inner direction (lower side based on FIG. 4 ).

The upper surface of the second bonding layer 320 of the bonding tape 10 located on the lower side may be in contact with the lower surface of the base film 100 of the bonding tape 10 located on the upper side. In addition, the upper surface of the lower second bonding layer 320 may be rolled while maintaining a bonding state with the lower surface of the upper base film 100 . Accordingly, the bonding tape 10 may stably maintain a rolled state. Since the winding shape can be maintained even in a state in which a relatively small tension is applied to the bonding tape 10, the physical force applied to the bonding tape 10 can be reduced, thereby minimizing structural deformation. In addition, there is an effect that can provide work convenience to the worker performing the work with the wound roll bonding tape (10).

Next, referring further to FIGS. 5 and 6 , the film having the comparative structure is different from the environmentally friendly anti-oxidation bonding tape 10 according to the present embodiment in that it does not include the second bonding layer located on the uppermost side. 6 shows two layers of a wound roll. That is, the film shown in FIG. 5 may be in a state of being laminated in the outer circumferential direction (upper side based on FIG. 6 ).

The upper surface of the release film 201 of the film located on the lower side may be in contact with the lower surface of the base film 101 of the film located on the upper side. In this case, in order to maintain the rolled shape of the film, tension must be applied to the film by pulling it taut. Therefore, there is a problem in that the structure may be deformed due to excessive physical force applied to the film.

In addition, when the tension disappears, as shown in FIG. 6 , a problem in that the lower surface of the release film 201 of the lower film and the base film 101 of the upper film are spaced apart may occur. Accordingly, it may cause inconvenience to a worker performing an operation with the wound roll film.

Next, with further reference to FIGS. 7 and 8 , the film having this comparative structure does not include the second bonding layer located on the uppermost side, but the second bonding layer 351 disposed below the base film 101 . It is different from the environmentally friendly anti-oxidation bonding tape 10 according to the present embodiment in that it further includes. 8 shows two layers of a wound roll. That is, the film shown in FIG. 7 may be in a state of being stacked in the outer circumferential direction (upper side based on FIG. 8 ).

The upper surface of the release film 201 of the film located on the lower side may be in contact with the lower surface of the second bonding layer 351 of the film located on the upper side. In addition, the upper surface of the lower release film 201 may be rolled while maintaining a bonding state with the lower surface of the upper second bonding layer 351 . Accordingly, the tape film may stably maintain a rolled state.

However, when the release film 201 is removed to use the film having a comparative structure according to FIGS. 7 and 8, the first bonding layer 311 and the second bonding layer (311) on the upper side and the lower side of the base film 101, respectively ( 351), there is a problem that all of them remain. In the case where the first bonding layer 311 is used as a layer for bonding with the skin complex as an example, the second bonding layer 351 faces the opposite direction of the skin complexion, that is, toward the operator. Therefore, there is a problem that the second bonding layer 351 is attached to the operator's hand or work tool, and it is also difficult to remove the tape film.

Unlike the film structure shown in FIGS. 5 to 8 , the eco-friendly anti-oxidation bonding tape 10 according to this embodiment has a second bonding layer 320 on the release film 200, and the bonding tape 10 is By removing all of the second bonding layer 320 together with the release film 200 during use, there is an improved effect compared to the film having the comparative structure described above.

Hereinafter, the manufacturing method of the bonding tape which concerns on this invention is demonstrated.

9 is a flowchart illustrating a method of manufacturing an environmentally friendly anti-oxidation one-sided bonding adhesive tape according to an embodiment of the present invention. FIG. 10 is a schematic diagram showing the manufacturing method of FIG. 9 .

9 and 10 , the method for manufacturing an environmentally friendly anti-oxidation bonding tape according to this embodiment includes the steps of preparing a second bonding layer composition (S100), preparing a base film (S200), and a first bonding layer Forming a (S300), disposing a release film (S400), forming a second bonding layer using the second bonding layer composition (S500), winding the bonding tape film (S600) and bonding Aging of the tape film (S700) may be included.

First, a second bonding layer composition is prepared (S100). As described above, the second bonding layer according to the present invention was completed by the inventor of the present invention. Preparing the second bonding layer composition (S100) may include preparing a mixture by mixing an acrylic copolymer, toluene, and ethyl acetate (S110) and aging the mixture (S120).

Since the composition and mixing ratio of the acrylic copolymer, toluene, and ethyl acetate have been previously described, overlapping descriptions will be omitted. Aging of the mixture (S120) may be performed at 40° C. to 50° C. for 48 hours or more. If the mixture is not aged for a sufficient time, the peeling force between the second bonding layer and the base film (especially when the base film is a polyethylene film) decreases, and the second bonding on the lower surface of the base film in the process of unwinding the roll There may be a problem that the layer remains. In addition, when the aging temperature is less than 40 ℃ similarly, there may be a problem in that the peeling force between the second bonding layer and the base film is lowered. On the other hand, when the aging temperature exceeds 50° C., a decrease in bonding strength of the second bonding layer may be induced.

Next, the base film 100 is prepared (S200), and the first bonding layer composition 310a is applied on one surface of the base film 100 to form the first bonding layer 310 (S300) and at the same time as the base. The release film 200 is disposed on the base film 100 by attaching the film 100 and the release film 200 (S400).

In an exemplary embodiment, the base film 100 and the release film 200 may be wound on the first unwinding roll 910 and the second unwinding roll 930, respectively. The base film 100 and the release film 200 may be unwound from the first unwinding roll 910 and the second unwinding roll 930 and passed between the pair of transfer rolls 950 . In addition, a first bonding layer 310 interposed between the base film 100 and the release film 200 is formed by applying the first bonding layer composition 310a between the base film 100 and the release film 200 . can do.

Next, the prepared second bonding layer composition 320a is applied on the release film 200 (S500). In an exemplary embodiment, the second bonding layer composition 320a may be applied to the coating roll 970 , and the second bonding layer 320 may be formed on the release film 200 using the coating roll 970 . there is. 10 illustrates a case in which the second bonding layer composition 320a is roll-coated, but the present invention is not limited thereto.

Next, the bonding tape on which the second bonding layer 320 is formed is wound using a winding roll 990 (S600). In this case, the winding roll 990 may be configured such that the second bonding layer 320 faces the outer circumferential direction and the base film 100 faces the inner circumferential direction. In this step, at least a portion of the second bonding layer 320 may be bonded to the lower surface of the base film 100 , and at least a portion (outermost) of the second bonding layer 320 may remain exposed to the air.

If the second bonding layer 320 faces the inner circumferential direction and the base film 100 is wound to face the outer circumferential direction, the second bonding layer 320 located on the inner side has a relatively outer position. A greater bending tensile force may be applied as compared to the base film 100 . Accordingly, the second bonding layer 320 may be damaged. On the other hand, when the base film 100 is directed inward as in the present embodiment, a relatively large bending tensile force can be applied to the base film 100 . Since the base film 100 has a greater thickness than the second bonding layer 320 , it is easy to distribute the bending tensile force in the circumferential direction and has the advantage of minimizing damage to the film.

Next, the bonding tape film wound on the winding roll 990 is aged (S700). Aging of the adhesive tape film (S700) may be performed at 35° C. to 50° C. for 48 hours or more. When the bonding tape film is not aged for a sufficient period of time, the second bonding layer 320 and the base film 100 are not completely in close contact and a peeling or separation problem occurs, so that the effect according to the present invention cannot be sufficiently achieved. In addition, if the aging temperature is less than 35 ℃ similarly, there may be a problem in that the peel force between the second bonding layer 320 and the base film 100 is lowered. On the other hand, when the aging temperature exceeds 50° C., a decrease in bonding strength of the second bonding layer 320 may be induced.

Hereinafter, the present invention will be described in more detail with reference to experimental examples.

[Experimental Example 1: Second bonding layer composition]

As shown in Table 1 below, a composition for a bonding layer was prepared and a film was prepared. Specifically, a first substrate having a size of 50 mm × 100 mm was prepared, and a second bonding layer composition was applied to a thickness of approximately 10 μm by using a slit coating. And a second substrate having a size of 50 mm × 100 mm was attached on the second bonding layer composition.

	first substrate (Corresponding to release film)	second bonding layer composition			second base (corresponding to base film)
		acrylic copolymer (weight%)	toluene (weight%)	ethyl acetate (weight%)
Example 1	PVC	25	15	60	PE form
Example 2	PVC	28	15	57	PE form
Example 3	PVC	31	17	52	PE form
Example 4	PVC	34	19	47	PE form
Example 5	PET	25	15	60	PE form
Example 6	PET	35	18	47	PE form
Comparative Example 1	PVC	23	13	64	PE form
Comparative Example 2	PVC	20	11	69	PE form
Comparative Example 3	PVC	27	15	58	PA form
Comparative Example 4	PVC	29	16	55	PA form
Comparative Example 5	PVC	26	14	60	PU form
Comparative Example 6	PVC	32	18	50	PU form
Comparative Example 7	PVC	24	16	60	PVC form
Comparative Example 8	PVC	32	18	50	PVC form
Comparative Example 9	PET	22	13	65	PE form
Comparative Example 10	PET	25	15	60	PU form
Comparative Example 11	PET	25	15	60	PVC form

In Table 1, PVC means polyvinyl chloride, PET means polyethylene terephthalate, PA means polyacrylate, and PU means polyurethane.

Then, an experiment was conducted to examine the peeling state by peeling the first and second substrates of the films according to Examples 1 to 6 and Comparative Examples 1 to 11. For peeling, a 180 degree peel test was performed by pulling one end of the first substrate to one side and simultaneously pulling one end of the second substrate to the other side at room temperature. At this time, the peeling rate was 300 mm/min.

In the films according to Examples 1 to 6, the bonding layer (second bonding layer) remained on the upper surface of the first substrate and did not remain at all on the lower surface of the second substrate, so it was in a clean state.

On the other hand, in the case of the films according to Comparative Examples 1, 2 and 9, it was confirmed that the bonding layer remained on the lower surface of the second substrate, and the surface of the bonding layer on the first substrate was not smooth. This may be because the content of ethyl acetate in the second bonding layer composition is too high.

In the case of the films according to Comparative Examples 3 and 4, there was a problem in that the bonding between the second substrate and the bonding layer was too weak. When an external force was applied, the interface between the second substrate and the bonding layer was peeled off too easily.

In the case of the films according to Comparative Examples 5 to 8, Comparative Example 10, and Comparative Example 11, it was confirmed that the bonding layer remained on the lower surface of the second substrate, and the surface of the bonding layer on the first substrate was not smooth. This may be because the bonding force between the bonding layer composition according to the present invention and the polyurethane foam and polyvinyl chloride foam is too strong.

According to the results of Experimental Example 1, the second bonding layer composition according to this Example had excellent bonding strength with polyvinyl chloride and polyethylene terephthalate as the first substrate, while excellent peeling strength with the polyethylene foam film as the second substrate. Able to know.

[Experimental Example 2: Comparison with the existing bonding layer]

A film was prepared as shown in Table 2 below using polyvinyl chloride or polyethylene terephthalate as the first substrate and a polyethylene foam film as the second substrate, and using the second bonding layer as a conventionally known pressure-sensitive adhesive. As the adhesive, a solvent-based adhesive from Burim Chemical was used.

	first substrate (Corresponding to release film)	second bonding layer	second base (corresponding to base film)
Comparative Example 12	PVC	BA-810	PE form
Comparative Example 13	PVC	BA-1030	PE form
Comparative Example 14	PVC	BA-1960	PE form
Comparative Example 15	PET	BA-270	PE form

Then, an experiment was conducted to examine the peeling state by peeling the films according to Comparative Examples 12 to 15 in the same manner as in Experimental Example 1.

In the case of the films according to Comparative Example 12, Comparative Example 14, and Comparative Example 15, it was confirmed that the adhesive layer remained on the lower surface of the second substrate, and the surface of the adhesive layer on the first substrate was not smooth. In addition, in the case of the film according to Comparative Example 13, there was a problem in that the second substrate was damaged during the peeling process.

[Experimental Example 3: Confirmation of Effect of Second Bonding Layer Thickness]

Films were prepared by varying the thickness of the bonding layer as shown in Table 3 below. The second bonding layer composition used in Comparative Examples 16 and 17 was the same as in Example 1.

	second bonding layer thickness
Example 1	10㎛
Example 2	10㎛
Comparative Example 16	20㎛
Comparative Example 17	50㎛

Then, an experiment was conducted to examine the peeling state by peeling the films according to Comparative Examples 16 and 17 in the same manner as in Experimental Example 1.

In the case of the films according to Comparative Examples 16 and 17, it was confirmed that the bonding layer remained on the lower surface of the second substrate, and the surface of the bonding layer on the first substrate was not smooth.

[Experimental Example 4: Preparation of adhesive tape film]

<Example 7>

A bonding tape having the structure as shown in FIG. 1 was manufactured using the material according to Example 1. That is, a polyethylene foam film was used as a base film, and a polyvinyl chloride film was used as a release film. As the first bonding layer, BA-810 manufactured by Burim Chemical was used, and the second bonding layer was configured as shown in Table 1.

And the prepared bonding tape is shown in FIG. 11 .

In addition, a photograph of a water tank module using the manufactured bonding tape is shown in FIG. 12 . For the water tank module, a plurality of water tank units having a size of 10L were prepared and sealed with an adhesive tape therebetween.

<Comparative Example 18>

A bonding tape having a structure as shown in FIG. 5 was prepared. The same material as in Example 7 was used for the base film, the release film, and the first bonding layer. And the prepared bonding tape is shown in FIG. 13 .

<Comparative Example 19>

A bonding tape having a structure as shown in FIG. 7 was prepared. The same material as in Example 7 was used for the base film, the release film, the first bonding layer, and the second bonding layer. And the prepared bonding tape is shown in FIG. 14 .

Referring first to FIG. 13 , the bonding tape according to Comparative Example 18 was not bonded between the base film and the release film, so it was difficult to maintain the rolled state. That is, as shown in FIG. 13 , the winding roll does not maintain its shape and is loosened, causing inconvenience in operation.

Next, referring to FIG. 14 , in the bonding tape according to Comparative Example 19, the base film and the release film were bonded through the second bonding layer, so that the rolled state could be stably maintained. However, after removing the release film, the bonding layer remains on one side and the other side with respect to the base film, which is inconvenient when working with the bonding tape. In order to prevent this, there is an inconvenience in operation that a bonding force must be removed by applying a surfactant (detergent, etc.) to an unnecessary bonding layer.

Next, referring to FIG. 11 , in the bonding tape according to Example 7, the base film and the release film were bonded through the second bonding layer, so that the rolled state could be stably maintained. In addition, since the second bonding layer is removed together with the release film, it can be used as a single-sided bonding type bonding tape, so that work convenience can be clearly improved.

In addition, referring to FIG. 12 , it can be confirmed that the water tank module can be stably configured by using a bonding tape made of a component having low water vapor permeability and low solubility in water.

<Example 8>

An eco-friendly anti-oxidation bonding tape according to an embodiment of the present invention having a structure as shown in FIG. 1 was prepared. That is, an ethylene vinyl acetate foam film was used as a base film, and a polyvinyl chloride film was used as a release film. BA-810 of Burim Chemical was used as the first bonding layer, and the second bonding layer was composed of acrylic copolymer, toluene and ethyl acetate. And the prepared bonding tape is shown in FIG. 15 .

<Comparative Example 20>

A bonding tape having the same structure as in Example 8 was prepared, the release film, the first bonding layer, and the second bonding layer were made of the same material as in Example 8, and a conventional polyvinyl chloride (PVC) foam was used as the base film. did. And the prepared bonding tape is shown in FIG. 16 .

Referring to FIG. 16 , it can be confirmed that cracking is observed when the conventional PVC foam is applied as a base film.

In the above, the embodiment of the present invention has been mainly described, but this is only an example and does not limit the present invention, and those of ordinary skill in the art to which the present invention pertains within a range that does not depart from the essential characteristics of the embodiment It will be appreciated that various modifications and applications not exemplified above are possible. Therefore, it should be understood that the scope of the present invention includes changes, equivalents or substitutes of the technical ideas exemplified above. For example, each component specifically shown in the embodiment of the present invention may be implemented by modification. And differences related to such modifications and applications should be construed as being included in the scope of the present invention defined in the appended claims.

Claims (10)

1. base film;

   a first bonding layer disposed on the base film;

   a release film disposed on the first bonding layer; and

   A second bonding layer disposed on the release film,

   One-sided bonding type eco-friendly anti-oxidation bonding tape, characterized in that the upper surface of the second bonding layer is exposed to the air.
2. According to claim 1,

   The base film includes a polyethylene form film or an ethylene vinyl acetate form film,

   The release film includes a polyvinyl chloride film or a polyethylene terephthalate film,

   The second bonding layer is an environmentally friendly anti-oxidation bonding tape, characterized in that it comprises an acrylic copolymer, toluene and ethyl acetate (ethyl acetate).
3. 3. The method of claim 2,

   The second bonding layer,

   25% to 35% by weight of the acrylic copolymer;

   14% to 19% by weight of toluene, and

   Eco-friendly anti-oxidation bonding tape, characterized in that it comprises 47 wt% to 61 wt% of the ethyl acetate.
4. According to claim 1,

   The modulus of the first bonding layer is greater than the modulus of the second bonding layer,

   The thickness of the first bonding layer is environmentally friendly anti-oxidation bonding tape, characterized in that greater than the thickness of the second bonding layer.
5. 5. The method of claim 4,

   The release film has one surface in contact with the second bonding layer, and the other surface in contact with the first bonding layer,

   The release film is coated only on the other side, and is an eco-friendly anti-oxidation bonding tape, characterized in that it is coated with silicone, polyethylene or polyolefin.
6. 6. The method of claim 5,

   The release film has a plurality of through holes,

   The second bonding layer is at least partially inserted into the through hole, and the second bonding layer is in contact with the first bonding layer and the inner wall of the through hole.
7. A one-sided bonding type bonding tape rolled along the longitudinal direction, comprising:

   The bonding tape is

   base film;

   a first bonding layer disposed on the base film;

   a release film disposed on the first bonding layer; and

   A second bonding layer disposed on the release film,

   The rolled bonding tape is rolled so that the second bonding layer faces outward and the base film faces inward,

   In the rolling state of the bonding tape, characterized in that the upper surface of the second bonding layer is attached to the lower surface of the base film in contact with,

   Rolled one-sided bonding type eco-friendly antioxidant bonding tape
8. applying a first bonding layer composition on one surface of the base film and attaching the base film and the release film;

   applying a second bonding layer composition on the release film and winding the base film and the release film, winding the second bonding layer composition to contact the other surface of the base film to form a roll; and

   A method of manufacturing a one-sided bonding type eco-friendly anti-oxidation bonding tape, characterized in that it comprises the step of aging the wound roll at 35°C to 50°C for 48 hours or more.
9. 9. The method of claim 8,

   The composition of the first bonding layer composition and the composition of the second bonding layer composition are different,

   The second bonding layer composition,

   A step of mixing an acrylic copolymer, toluene and ethyl acetate, wherein 25 wt% to 35 wt% of the acrylic copolymer, 14 wt% to 19 wt% of the toluene, and 47 wt% to 61 wt% of the ethyl acetate are mixed step; and

   A method for producing a one-sided bonding type eco-friendly anti-oxidation bonding tape, characterized in that it is prepared including the step of aging the mixture at 40°C to 50°C for more than 48 hours.
10. a plurality of water tank units; and

    A water tank module comprising the bonding tape according to claim 1 as a bonding tape sealing between the plurality of water tank units.

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