KR101446630B1 - Adhesive Sheet Assembly - Google Patents

Abstract

A base sheet having a plurality of ruptures; And a plurality of sheet-shaped adhesive members adhered to the base sheet by self-adhesive force so as to cover at least a part of the rupture portion, wherein the rupture portion is formed corresponding to each of the adhesive members, Disclosed is an adhesive sheet assembly in which a gap is formed between the base sheet and the adhesive member by pressing a portion of the adhesive layer exposed outside the adhesive member.

Description

Adhesive Sheet Assembly

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pressure sensitive adhesive sheet assembly, and more particularly, to a pressure sensitive adhesive sheet assembly capable of easily separating a plurality of sheet-shaped pressure sensitive adhesive members having a self-adhesive force applied on a base sheet from a base sheet.

BACKGROUND ART An electronic device such as a smart phone includes an acoustic transducer such as a microphone and a speaker, and an electronic device is provided with a hole for connecting the inside and the outside. These holes are provided with filter assemblies of a certain size and thickness, which have air permeability and hydrophobicity, which are difficult to get in and out while passing air that protects the inside of the electronic device from external pollutants such as liquid or dust.

In order to adhere the filter member having a predetermined thickness and a thickness of about 0.02 mm to 0.2 mm, which is difficult to get in and out of the filter member, while the air passes through the filter assembly, Sensitive adhesive tape which is adhered along the longitudinal direction.

When manufacturing such a filter assembly, one side of the double-sided adhesive tape is adhered to the filter sheet, and the other side is adhered onto a base sheet of a flat surface which is a release film. Here, the base sheet is usually a release film or release paper.

However, according to the prior art, when the filter member is made of a nanofiber, an elastic member or a mesh having a very small hole, the filter assembly having a low tensile strength or hardness and a small thickness is adhered onto the double- It is difficult to separate it from the base sheet.

A number of patents relating to techniques for separating an adhesive tape from release or release films have been proposed.

For example, in Japanese Patent Laid-Open No. 2005-49855, in a transparent sheet for a seal cover in which a plurality of transparent cover sheets are attached on the top surface of a release sheet, a release sheet is formed in which a release sheet is separated by a cutting line at a portion where one side edge of the cover sheet is superimposed Wherein the separable release paper is separated from the release paper by a size smaller than that of the cover paper, and a part of the separated release paper is protruded outside the edge of the cover paper.

The cover applied to this technique has no problem because it has a large mechanical strength. However, if the mechanical strength of the cover paper is small and the adhesive strength is high, it is difficult to separate the cover paper from the release paper. In particular, It is more difficult to separate. Further, it is necessary to further separate the separated release liner from the cover paper. In this case, if the mechanical strength of the cover paper is low and the adhesive strength is strong, the separated release is difficult to separate, but the cover paper may be torn.

Also disclosed in Korean Utility Model Application No. 2011-2471 is a release paper, at least one transparent tape that is detachably adhered on the release paper and adhered to the stamped paint area to protect the paint, And a tape separating line for separating the transparent tape from the release paper so that the leading end of the transparent tape can be previously peeled off when the release paper is folded or spread to separate the transparent tape from the release paper. .

In this technique, even if the mechanical strength of the transparent tape is low and the adhesive strength is high, there is a fatal weak point that the transparent tape is not peeled off from the releasing paper but is folded in the state of being adhered to the releasing paper even if the cutting line for tape separation of the releasing paper is broken.

As described above, the above-described technique can be applied to a cover or a transparent tape having a relatively large mechanical strength, but in the case of a thin adhesive member having low mechanical strength such as tensile strength or elongation, It is crushed or scratched.

For example, there is a self-adhesive thermally conductive silicone rubber pad which is cut into a thin and constant size with a thickness of 0.2 mm to 1 mm with an adhesive member used inside the electronic device. The thermally conductive silicone rubber pad is provided by being adhered to a flat base film by the self-adhesive force of the thermally conductive silicone rubber, and the base film is a polyester film continuously provided when the thermally conductive silicone rubber in a roll is manufactured .

The tensile strength and elongation of the thermally conductive silicone rubber are very poor compared to the base film. In addition, in order to increase the thermal conductivity of the thermally conductive silicone rubber, a lot of powder having a good thermal conductivity is contained in the silicone rubber, so that the mechanical strength such as the tensile strength and elongation of the thermally conductive silicone rubber produced becomes low.

Thus, it is difficult to separate the thermally conductive silicone rubber adhered to the base film from the base film when the silicone rubber having a good thermal conductivity is low in tensile strength, poor in elongation, thin in thickness, and good in self-adhesive force. As a result, when separating the thermally conductive silicone pad from the base film, the thermally conductive silicone pad is prone to tearing, fraying, or damage.

Therefore, in order to separate an adhesive member having a low mechanical strength such as tensile strength or elongation and a thin self-adhesive force from the base film as described above, a technique different from the above technology is required.

Accordingly, an object of the present invention is to provide an adhesive sheet assembly which is easy to separate an adhesive member having a thin thickness and a low mechanical strength from a base sheet.

Another object of the present invention is to provide an adhesive sheet assembly which is easy to mass-produce.

Another object of the present invention is to provide an adhesive sheet assembly which is economical and easy to manufacture.

According to an aspect of the present invention, there is provided a base sheet comprising: a base sheet having a plurality of ridges; And a plurality of sheet-shaped adhesive members adhered to the base sheet by self-adhesive force so as to cover at least a part of the rupture portion, wherein the rupture portion is formed corresponding to each of the adhesive members, There is provided an adhesive sheet assembly in which a gap is formed between the base sheet and the adhesive member by pressing a portion of the adhesive layer exposed outside the adhesive member.

According to another aspect of the present invention, there is provided a base sheet comprising: a base sheet having a plurality of fracture slits; And a plurality of sheet-shaped adhesive members adhered to the base sheet by self-adhesive force so as to cover at least a part of the fracture slit, wherein the break slit is formed corresponding to each of the adhesive members, And the base sheet is connected to the base sheet, and a portion of the rupture region formed by the rupture portion is exposed to the outside of the adhesive member to press the base sheet, There is provided an adhesive sheet assembly in which a gap is formed between the adhesive members.

According to another aspect of the present invention, there is provided a base sheet comprising: a base sheet having a plurality of ruptures; And a plurality of sheet-shaped adhesive members having a self-adhesive force formed by casting and curing a liquid polymer on the base sheet at a position covering at least a part of the rupture portion, the rupture portion corresponding to each of the adhesive members And a gap is formed between the base sheet and the adhesive member by pressing a portion exposed to the outside of the adhesive member among the rupture regions formed by the rupture portion.

Preferably, the adhesive member has a self-adhesive force on both sides, and a sheet member adhered to the adhesive member by the self-adhesive force of the adhesive member is laminated.

Preferably, the breaking portion comprises a breaking slit passing through the base sheet, a breaking groove formed continuously from the back surface of the base sheet, or a plurality of breaking holes discontinuously passing through the base sheet, And is connected to the base sheet through a bridge formed between the grooves or the breaking holes.

Preferably, the rupture portion is formed by a laser beam or a blade from the front surface or back surface of the base sheet.

Preferably, adjacent adhesive members on the side of the adhesive member that do not cover the rupture portion are arranged to contact each other, and the rupture portion is formed so as to include, on the inner side, edges of the side surfaces of the adjacent adhesive members which contact each other.

Preferably, the adhesive member may be any one of a thermally conductive sheet, an electrically conductive sheet, an electromagnetic wave absorber sheet, a gasket, or a filter having air permeability.

Preferably, the sheet member may be any one of a thermally conductive sheet, an electrically conductive sheet, an electromagnetic wave absorber sheet, a gasket sheet, a mesh sheet, or a breathable filter sheet.

Preferably, the sheet member may be any one of an aluminum foil, a copper foil, a fiber, a mesh or a radio wave absorber sheet.

Preferably, the base sheet is one of a polymer film or paper having no releasability, or a polymer film or a polymer coated with a releasable polymer resin on paper.

Further, preferably, a protective film is adhered on the adhesive member, and the protective film comprises a releasable polymer film or paper or a pressure sensitive adhesive sheet having a weak adhesive force.

According to the above-described structure, since the clearance easily spreads between the base sheet and the adhesive member by a tool such as a tweezers or a forceps, the adhesive member or the laminate having a thin thickness and a low mechanical strength with a small mechanical strength can be reliably and easily The base sheet can be separated from the base sheet.

The base sheet is adhered to the bottom surface of the adhesive member on which the tweezers or the like are inserted or the bottom surface of the layered product, so that dust does not enter from outside and does not come into contact with air, so that the inherent physical properties and adhesiveness of the adhesive can be maintained.

It is possible to reduce the change in the inherent properties and adhesive force of the pressure-sensitive adhesive when the breaking groove of the breaking portion is formed on the surface of the base sheet on which the pressure-sensitive adhesive member or the pressure-sensitive adhesive double coated sheet is not formed.

In addition, since the breakable portion having the structure of the fracture slit, the broken groove, and the bridge can be manufactured by various manufacturing methods, the adhesive sheet assembly can be manufactured economically.

Further, it is easy to adjust the shape, arrangement, size or number of the rupture parts, so that the pressure sensitive adhesive sheet assembly can be produced economically.

1 is a perspective view illustrating an adhesive sheet assembly according to an embodiment of the present invention.
Fig. 2 (a) is a bottom view of the base sheet, and Fig. 2 (b) is a perspective view showing another example of the base sheet.
3 is a perspective view and a cross-sectional view taken along line BB in FIG.
3A and 3B are photographs showing a process of detaching the actual adhesive member from the base sheet.
Fig. 4 shows another shape of the rupture part.
5 shows another structure of the rupture part.
6 (a) to 6 (e) are process drawings showing a method of manufacturing an adhesive sheet assembly according to an embodiment of the present invention.
7 is a perspective view showing a part of an adhesive sheet assembly according to another embodiment of the present invention.

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

2 (a) is a bottom view of a base sheet, FIG. 2 (b) is a perspective view showing another example of a base sheet, and FIG. 3 3A and 3B are photographs showing a process of detaching the actual adhesive member from the base sheet. Fig. 4 shows another shape of the rupture part, and Fig. 5 shows a cross- And shows another structure of the rupture part.

The adhesive sheet assembly 100 is composed of a base sheet 110 on which a breaking portion 112 is formed and a sheet-like adhesive member 120 having a self-adhesive property adhered on the base sheet 110, Is adhered to the base sheet (110) by self-adhesive force so as to cover at least a part of the rupturable portion (112).

The rupture portion 112 refers to a portion formed on the base sheet 110 in a state where the rupture portion 112 is easily cut by an external force. For example, as described later, the rupture slit 112a or the rupture groove 112b or the rupture hole 112c ).

In the following description, an area separated from the base sheet 110 by the rupture part 112 is referred to as a rupture area 110a. When the rupture area 112a is downwardly moved or pivoted by a tweezer or the like as described later, To the base sheet 110 or completely separated from the base sheet 110.

The base sheet 110 may be a PET film having good heat resistance and excellent mechanical strength or may be paper. A releasable polymer resin may be coated on the polymer film or paper so as to be easily separated from the adhesive member. Alternatively, Can be used.

The thickness of the base sheet 110 may preferably be 0.03 mm to 0.15 mm in consideration of the specific structure of the rupture portion 112, that is, the formation of the rupture slit 112a, the rupture groove 112b or the rupture hole 112c .

Referring to FIG. 1, the size and shape of the adhesive member 120 and the breaking portion 112 are generally uniform, at least one breaking portion 112 is formed corresponding to each of the adhesive members 120, Is disposed so as to cover at least a part of the rupturing portion 112.

In this embodiment, all of the adhesive members 120 are arranged so as to be spaced apart from each other at the front, rear, left and right sides. However, as shown in Fig. 2, the adhesive member 120, which covers the rupturing portion 112, 122 and spaced apart from the adjacent adhesive member 123 on the side not covering the rupturing portion 112. [ In this case, there is an advantage that the number of the adhesive members 120 that can be adhered to the base sheet 110 is increased.

The distance between the adjacent adhesive member 120 and the adhesive member 122 may be a distance such that a part of the rupturable portion 112 can be exposed or a rupture formed by the rupturable portion 112 with a working tool such as a tweezers It may be a distance that the area 110a can be pressed.

Referring to FIG. 5, the rupture part 112 may have various sizes and shapes.

5 (a), the breaking slit 112a is connected to the base sheet 110 through a narrow cut line, passing through the base sheet 110, without departing from the base sheet 110 via the bridge 111 .

The length of the fracture slit 112a and the length of the bridge 111 is not particularly limited. However, by making the length of the fracture slit 112a longer than the length of the bridge 111, it is possible to secure a space of a sufficient size to be inserted with a tweezers or the like.

In addition, as shown in Fig. 5 (b), the fracture slit 112a can be replaced with the fracture groove 112b. That is, the fracture groove 112b is formed in the same shape as the fracture slit 112a. However, the base sheet 110 is not completely cut, but is cut only in the thickness direction up and down, do. Preferably, the breaking depth of the fracture groove 112b can be made to be 2/3 or more of the thickness of the base sheet 110 easily due to the external force.

Further, as shown in Fig. 5 (c), the fractured portion 112 can be formed by discontinuously forming the fracture hole 112c having a circular cross section with a small dimension. That is, the laser beam can be discontinuously irradiated along a predetermined path to form a broken hole 112c having a dot-like horizontal cross section. In this case, a portion between the adjacent fracture holes 112c becomes a bridge 111, and consequently, when a force is applied to the fracture region 110a formed by the fracture hole 112c by the holding tool, the bridge 111 is also broken Thereby providing a space for inserting the tweezers.

3, when the fracture slit 112a is formed, since the base sheet 110 has been completely cut except for the bridge 111, the base sheet 110 is completely cut except for the bridge 111, The region 110a is pushed downward and a gap is easily formed between the base sheet 110 and the adhesive member 120. [ On the other hand, when the fracture groove 112b is formed, force is applied to the tweezers to cut a plurality of bridges 111 in order to remove flesh remaining in the thickness direction and to form the fracture holes 112c. It needs to be added.

When the laser beam is irradiated to form the fracture slit 112a on the back surface of the base sheet 110 to which the adhesive member 120 is adhered, the inherent property of the adhesive member 120 is deteriorated due to the heat applied by the laser beam Or the adhesive strength may be lowered. However, since the grooves 112b are formed to have a constant thickness, there is an advantage that the influence of damaging the adhesive force due to the heat applied by the laser beam can be minimized.

Both ends of the rupture part 112 exposed to the outside of the adhesive member 120 form a bridge 111. The bridge 111 is not a separately made part but a base sheet 110 so that the rupture area 110a is connected to the base sheet 110.

The bridge 111 is not required to be processed and the thickness of the bridge 111 is equal to the thickness of the base sheet 110. However, The thickness of the bridge 111 can be reduced.

As shown in FIG. 3, when the break zone 110a is downwardly pressed by the tweezers to make a gap between the base sheet 110 and the adhesive member 120, the thickness of the bridge 111 The breaking region 110a is not separated from the base sheet 110 via the bridge 111 but remains connected to the base sheet 110 as shown in FIGS. 5 (b) and 5 (c) When the thickness of the base sheet 110 is thinner than the thickness of the base sheet 110 or has a very narrow length, the through hole formed by the rupture part 112 may be separated from the base sheet 110.

The shape of the rupturing portion 112 is not limited to the shape (C-cut) shown in FIG. 1, and may have various shapes as shown in FIG.

4 (a), a U-shaped rupture portion 113 (U-cut), a V-shaped rupture portion 114 (V-cut), or a rectangular rupture portion 115 is formed .

In this example, the bridge 111 is exposed to the outside of the adhesive member 120, which makes it easier to open the gap than the bridge 111 is located on the bottom surface of the adhesive member 120. It is also possible to prevent the underside of the adhesive member 120 from being broken by the break portions 113, 114 and 115 by rounding the bent portions of the break portions 113, 114 and 115.

By varying the shapes of the bridge 111 and the breakable portions 113, 114, and 115, manufacturing costs can be reduced and damage to the adhesive member 120 can be reduced.

4 (b), when the adhesive member 120 is in close contact with each other to increase the mounting density, a substantially V-shaped rupture portion 116 including the edge of the adhesive member 120 on the inner side is formed. Preferably, the breaking angle of the breaking portion 116 is about 30 degrees, the length of the portion covered by the adhesive member 120 is about 60% of the length of the adhesive member 120, and the end portion is rounded .

As described above, since the rupture portion 116 has a V-shape including corners, more edges of the adhesive member 120 can be secured and the gap can be more easily opened.

4 (c), the two ridges 112 are narrowly formed between the adjacent ridges 120 and 122 to reduce the area occupied by the ridges 112 as a whole, The mounting density can be increased.

As the size of the fracture slits 113, 114, 115, 116, 117, and 118 located at the bottom of the adhesive member 120 is smaller, the adhesive force of the adhesive member 120 is less damaged.

The adhesive member 120 is adhered onto the base sheet 110 by the self-adhesive force. Preferably, the adhesive member 120 is formed of a thermally conductive member having a thin thickness, a relatively low mechanical strength and self- An absorber, a gasket, or a filter having air permeability.

For example, the polymer material of the adhesive member 120 may be any one of silicone rubber, acrylate resin, and urethane resin having self-adhesive property. The adhesive material 120 may have a relatively low hardness and a self- Lt; / RTI >

The adhesive member 120 is integrally formed by casting and curing a liquid polymer resin on the base sheet 110. In order to improve the mechanical strength of the adhesive member 120 in the adhesive member 120, A sheet may be installed.

The adhesive member 120 may have an adhesive force on one side or both sides. If the adhesive force on both sides of the adhesive member 120 is different from that on the opposite side of the base sheet 110, Is stronger than the adhesion of the other side.

Preferably, the thickness of the adhesive member 120 may be 0.01 mm to 0.6 mm.

Although not shown, a protective film may be attached on the adhesive member 120. As the protective film, a releasable polymer film or paper or a pressure sensitive adhesive sheet having a weak adhesive force may be used. That is, in the case where the adhesive member 120 is a single-sided adhesive sheet, the adhesive sheet having weak adhesive force is used as a protective film since there is no adhesive function on the surface thereof, and in the case of a double-sided adhesive sheet, a releasable polymer film or paper is used.

The protective film may be attached individually to a slightly larger dimension with respect to each adhesive member 120 or may be adhered onto the adhesive member 120 with a single sheet of a size corresponding to the base sheet 110.

Such a protective film prevents foreign matter from adhering to the surface of the adhesive member 120 exposed to the outside.

As described above, according to the conventional technique, since the mechanical strength such as tensile strength, elongation and hardness of the adhesive member 120 is low and the thickness is as thin as about 0.3 mm, for example, The adhesive member 120 tends to be torn, broken, or damaged due to difficulty in easy separation on the sheet 110.

However, according to the present invention, when the operator pushes the end of the tweezers downward against the rupture area 110a formed by the rupture part 112, the rupture area 110a along the rupture slit 112a as shown in Fig. A gap is opened or the base sheet 110 is broken along the breaking groove 112b or the breaking hole 112c and the breaking region 110a is pushed downward to open a gap. One side of the tweezers can be inserted into the gap, and the adhesive member 120 having a low mechanical strength and a small thickness can be gripped and then separated from the base sheet 110.

Therefore, the working efficiency can be improved and the adhesive member 120 can be separated so as not to be damaged.

Since the adhesive member 120 always adheres to the base sheet 110 until the gripper 112 is gripped by a tweezers or the like from the outside, external dust is less likely to infiltrate into the bottom surface of the adhesive member 120, The adhesive force of the adhesive member 120 covering the adhesive layer 112 is not significantly damaged.

3A and 3B are photographs showing a process of detaching the actual adhesive member from the base sheet.

3A, one of the tweezers presses the rupture area 110a to form a gap between the base sheet 110 and the adhesive member 120, and the other of the tweezers touches the surface of the adhesive member 120 do. Therefore, in this state, the adhesive member 120 can be easily gripped by the tweezers, and the adhesive member 120 can be easily removed from the base sheet 110.

In the case of the narrow adhesive member 120 as shown in FIG. 3B, when the circular breaking region 110a formed by the C-cut is removed by the tweezers and a gap is opened, the adhesive member 120 is detached from the base sheet 110 You can.

3A and 3B are merely examples, and the adhesive member 120 can be efficiently detached by forming the break portion 112 having an appropriate size and shape with respect to the adhesive member 120 having various sizes and shapes.

Hereinafter, a method of manufacturing the adhesive sheet assembly 100 according to one embodiment will be described.

6 (a) to 6 (e) are process drawings showing a method of manufacturing an adhesive sheet assembly according to an embodiment of the present invention.

As shown in Fig. 6 (a), it is possible to provide a flat base sheet 110 on which nothing is formed, preferably in a roll shape continuously.

Subsequently, a liquid polymer resin having a self-adhesive force is continuously cast on the base sheet 110 and cured to form a polymer adhesive layer 1120 having a constant thickness (see FIG. 6 (b)).

6 (c)), the polymer adhesive member 121 to be removed is detached and removed (Fig. 6 (d)). Then, the polymer adhesive layer 1120 is cut off vertically by using the blade 10 , So that only the polymer adhesive member 120 to be used remains adhered to the base sheet 110.

6E, a laser beam is irradiated from the back surface of the base sheet 110, or a laser beam is applied from the back surface of the base sheet 110 to the edge of the polymer adhesive member 120 remaining on the surface of the base sheet 110, The rupturing portion 112a and the rupturing groove 112b or the rupture hole 112c and the bridge 111 are formed.

Here, the fracture slit 112a, the fracture groove 112b, or the fracture hole 112c can be selectively formed by adjusting the intensity of the laser beam or adjusting the depth of the blade, respectively. When the rupture portion 112 is formed of the fracture slit 112a or the rupture hole 112c to form the bridge 111 as described above, the base sheet 110 of the portion corresponding to the bridge 111, The breaking grooves 112b may be formed at the same depth in the base sheet 110 corresponding to the bridge 111 when the breaking portions 112 are formed by the breaking grooves 112b.

The adhesive sheet assembly 100 according to an embodiment of the present invention can be manufactured by the above-described method.

However, the manufacturing method of the present invention is not limited to this and is not limited thereto. For example, the base sheet 110 may be formed on the base sheet 110 in which the fracture slit 112a, the fracture groove 112b or the fracture hole 112c and the bridge 111 are formed in advance The polymer adhesive resin layer 1120 having a constant thickness can be formed by continuously casting and curing a liquid polymer resin having a self-adhesive force.

When the liquid polymer resin is cast on the surface of the base sheet 110 on which the break grooves 112b are not formed, the breaking grooves 112b are formed even if the viscosity of the liquid polymer resin is low, Is formed on the opposite surface so that the liquid polymer resin does not penetrate into the fracture groove 112b.

If the viscosity of the liquid polymer resin is relatively high even if the breakage section 112 is the fracture slit 112a or the fracture hole 112c, the polymer resin in the liquid phase may be slightly impregnated into the fracture slit 112a, There is no problem.

6 (c)), the polymer adhesive member 121 to be removed is detached and removed (FIG. 6 (d)). Then, the polymer adhesive layer 121 is cut off vertically with the blade 10, , Only the polymer adhesive member 120 to be used is left sticking to the base sheet 110. [

When a liquid polymer resin having a self-adhesive force is cast on the base sheet 110 on which the rupture portion 112 is previously formed, the mass production is easy and the price is advantageous.

As described above, according to the present invention, the breakable portion 112 can be formed variously by various manufacturing methods.

7 is a perspective view showing an adhesive sheet assembly according to another embodiment of the present invention.

The adhesive sheet assembly 200 according to this embodiment includes a base sheet 210 having a breaking portion 212, a double-sided adhesive sheet 220 and a double-sided adhesive sheet 220 which are adhered to the base sheet 210 by self- And a laminated body 240 composed of a sheet member 230 having a small thickness adhered by the self-adhesive force of the double-sided adhesive sheet 220. The laminated body 240 covers at least a part of the rupturable portion 212 .

Therefore, the sheet member 230 and the base sheet 210 are adhered to each other by the adhesive force between the upper surface and the lower surface of the double-sided adhesive sheet 220. [

The upper and lower areas of the double-sided adhesive sheet 220 are the same as the upper and lower areas of the sheet member 230.

The size and shape of the laminate 240 are uniform throughout and at least one rupture 212 is assigned to each of the laminate 240.

1, the rupture portion 212 is composed of a fracture slit, and is connected to the base sheet 210 through the bridge 211. As shown in Fig.

The bridge 211 and the fracture slit 212 have the same structure and shape as those described in Fig.

The adhesive strength between the front surface and back surface of the double-sided adhesive sheet 220 may be the same or different. In addition, a mesh or a film may be inserted into the interior of the double-sided adhesive sheet 220 for mechanical strength. In addition, the double-sided adhesive sheet 220 may be electrically conductive to form an electric path.

The sheet member 230 may have a thickness of 0.01 to 0.2 mm and may have a self-restoring force due to elasticity in order to improve sealing of confronting objects. However, the present invention is not limited thereto.

Preferably, the sheet member 230 may be functionally a thermally conductive sheet, an electrically conductive sheet, an electromagnetic wave absorber sheet, a gasket sheet, or a breathable filter sheet.

Further, the sheet member 230 may be any one of aluminum foil, copper foil, fiber, mesh, or radio wave absorber sheet. In this case, the layered product 240 may be an ordinary aluminum adhesive tape, a copper adhesive tape, a fiber adhesive tape, or a mesh adhesive tape. That is, the laminate 240 having a laminate structure of the sheet member 230 having no self-adhesive force and the double-sided adhesive sheet 220 having a self-adhesive force on both sides includes the sheet member 220 having a self- Of course.

In a practical application method, one side of the double-sided pressure-sensitive adhesive sheet 220 is adhered along the edge of one side of an air mesh filter 230 that passes through the air and prevents the infiltration of moisture, The other surface of the base 220 may be adhered to cover the rupturable portion 212 on the base sheet 210 on which the ruptured portion 212 is formed.

Also in this embodiment, as in the above embodiment, when the operator pushes the end portion of the tweezers downward by the breaking region 210a formed by the breaking slit 212, the breaking region 210a is pushed downward, Or the base sheet 210 is broken along the breaking groove or the breaking hole, so that the breaking region 210a is pushed downward to open a gap. One side of the tweezers can be inserted into the gap, and the stacked body 240 having a low mechanical strength and a small thickness can be gripped and then separated from the base sheet 210.

Therefore, the working efficiency is improved and the laminate 240 can be reliably separated so as not to be damaged.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. Accordingly, the scope of the present invention should not be construed as being limited to the embodiments described above, but should be construed in accordance with the following claims.

100, 200; Adhesive sheet assembly
110, 210; Base sheet
110a, 210a:
112, 113, 114, 115, 116:
111: Bridge
112a: Fracture slit
112b:
112c: breaking hole
120, 122: Adhesive member.
220; Double-sided adhesive sheet
230: sheet member
240:

Claims (16)

A base sheet having a plurality of ruptures; And
And a plurality of sheet-shaped adhesive members adhered to the base sheet by self-adhesive force so as to cover at least a part of the rupture portion,
Wherein the rupture portion is formed corresponding to each of the adhesive members,
Wherein both ends of the rupture part are exposed to the outside of the adhesive member and bridges are formed between both ends of the rupture part to be connected to the base sheet and after the breakage of the rupture part,
A portion of the rupture region formed by the rupture portion is pressed downward to expose the portion outside the adhesive member to form a gap between the rupture region and the adhesive member, a portion of the gripping tool is fitted in the gap, Wherein the adhesive sheet member contacts the adhesive member to grip the adhesive member. The method according to claim 1,
Wherein the adhesive member has a self-adhesive force on both sides, and a sheet member that is adhered to the adhesive member by the self-adhesive force of the adhesive member is laminated on the adhesive member. The method according to claim 1,
The break-
I) a fracture slit penetrating through the base sheet,
Ii) a fracture groove formed continuously from the back surface of the base sheet,
Iii) a plurality of discontinuous holes
Wherein the adhesive sheet assembly comprises: delete delete The method according to claim 1,
Wherein the rupture portion is formed by a laser beam or a blade from a front surface or a rear surface of the base sheet. The method according to claim 1,
Adhesive members adjacent to each other on the side of the adhesive member not covered with the rupture portion are arranged to contact each other,
Wherein the rupture portion is formed so as to include, on the inner side, the edge of the side surface of the adjacent adhesive member which is in contact with each other. delete The method of claim 2,
Wherein the sheet member is one of a thermally conductive sheet, an electrically conductive sheet, an electromagnetic wave absorber sheet, a gasket sheet, a mesh sheet, or a breathable filter sheet. The method of claim 2,
Wherein the sheet member is one of an aluminum foil, a copper foil, a fiber, a mesh, or a radio wave absorbent sheet. delete The method according to claim 1 or 2,
Wherein the adhesive member is formed by casting and curing a liquid polymer on the base sheet at a position covering at least a part of the rupture portion to have a self-adhesive force. delete The method according to claim 1,
Wherein the base sheet is one of a polymer film or a paper having no releasability, or a polymer film or a polymer coated with a releasable polymer resin on a paper. The method according to claim 1,
Wherein the protective film is adhered on the adhesive member, and the protective film comprises a releasable polymer film or paper or a pressure sensitive adhesive sheet having a weak adhesive force. A method of removing a sheet-shaped adhesive member that is adhered to a base sheet by a self-adhesive force from a base sheet,
Wherein the base sheet is provided with a breaking portion corresponding to the adhesive member, the adhesive member covering at least a part of the breaking portion,
Forming a gap by pressing a part of the rupture area formed by the rupture part exposed to the outside of the adhesive member downward by one of the gripping tools;
Placing a portion of the gripping tool in the gap and contacting the surface of the adhesive member to another portion; And
And gripping the adhesive member with the gripping tool and separating the adhesive member from the base sheet.

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