JP3163428U - Adhesive processing sheet - Google Patents

Abstract

The present invention provides an adhesive processed sheet that can prevent blistering and can be in contact with a surface to be adhered as a surface and can exhibit stable adhesive strength over the entire surface. In an adhesive processed sheet in which a sheet substrate 1, an adhesive layer 2 and a release sheet 3 are sequentially laminated, a large number of zigzag ridges 4 are formed in parallel to each other on the release sheet 3. In addition, zigzag grooves 5 are formed on one surface 6 of the pressure-sensitive adhesive layer 2 in close contact with the release sheet 3 so as to correspond to the zigzag ridges 4. [Selection] Figure 1

Description

  The present invention relates to an adhesive processed sheet.

  In the conventional pressure-sensitive adhesive sheet, in order to prevent the occurrence of blistering in which air is trapped between the pressure-sensitive adhesive layer and the window glass or the like, small convex portions (independent) are arranged on the pressure-sensitive adhesive layer in the form of dots (independent) ( For example, see Patent Document 1).

However, as shown in FIG. 6B, for example, on the straight line L ₀ -L ₀ that is the gap between the small convex part a and the small convex part a, the adherend such as the adhesive layer and the window glass is formed over the entire straight line. When the adhesive processed sheet is cut and used along this straight line L ₀ -L ₀ , there is a defect that it is easily peeled off from the cut edge (easy to start peeling). . In other words, there is a drawback that there is a position where it is easy to start turning. Further, since the adhesive layer and the adherend are in contact with each other as a point, there is a drawback that the adhesive layer is easily peeled off.

Utility Model Registration No. 2503717

  The problem to be solved is that since the adhesive layer contacts with the adherend surface as a point, the adhesive strength is partially weakened and the adhesive strength as a whole becomes unstable. In addition, the strength is inferior. Further, there is a specific cutting line position at which the start of peeling starts from the adherend surface.

Therefore, the pressure-sensitive adhesive sheet according to the present invention is a pressure-sensitive adhesive sheet in which a sheet base material, a pressure-sensitive adhesive layer, and a release sheet are sequentially laminated. A large number of zigzag ridges are formed in parallel to each other on the release sheet. And on one surface of the pressure-sensitive adhesive layer in close contact with the release sheet, zigzag grooves are formed corresponding to the zigzag ridges.
In addition, when the release sheet is peeled and removed, the zigzag groove has a depth of 3 μm or more and 50 μm or less and a groove width of 50 μm or more and 400 μm in a state where the adhesive layer is in a horizontal plane and one surface faces upward. The following is set.
Further, the distance between the horizontal lines and the distance between the vertical lines of two adjacent zigzag grooves are set to 1000 μm or more and 3000 μm or less.

  According to the pressure-sensitive adhesive processed sheet of the present invention, blistering can be prevented and the surface can be in contact with the adherend surface, and stable adhesive strength can be exhibited over the entire surface. In addition, the strength is improved. In addition, when the sheet is cut, there is no specific cutting line position at which it is easy to start peeling from the adherend surface, regardless of where the cutting edge is cut. That is, even when an external force acts to turn over, since the adhesive layer is always in contact with the adherend surface, it is difficult to turn over, and the adhesive state is maintained stably.

It is sectional drawing which shows one Embodiment of this invention. It is an expanded sectional view. It is an expanded sectional view which shows the state which peeled and removed the peeling sheet. It is a top view which shows the state which peeled and removed the peeling sheet. It is a principal part enlarged view of FIG. It is explanatory drawing which shows the state which peeled and removed the peeling sheet, Comprising: (A) is a plane explanatory drawing of this invention, (B) shows the plane explanatory drawing of a prior art example.

  FIG. 1 shows a first embodiment of the present invention. This adhesive processed sheet is an adhesive processed sheet in which a sheet substrate 1, an adhesive layer 2, and a release sheet 3 are sequentially laminated. A zigzag protruding line 4 is formed on the release sheet 3 and a zigzag is formed on the adhesive layer 2. A concave groove 5 is formed. The sheet substrate 1 is made of, for example, paper, a plastic film, or the like. The pressure-sensitive adhesive layer 2 only needs to have a viscosity enough to form the zigzag concave groove 5, and various pressure-sensitive adhesives can be used. The material of the release sheet 3 is made of, for example, paper or a plastic film. When the adhesive layer 2 is used while being adhered to an adherend (not shown) such as a window glass, the adhesive layer 2 and the sheet substrate 1 are transparent. In this case, it can be prevented from being obstructive.

  Specifically, as shown in FIGS. 1 and 4, the release sheet 3 has a large number of zigzag ridges 4 formed in parallel to each other, and one surface 6 of the adhesive layer 2 in close contact with the release sheet 3. The zigzag groove 5 is formed corresponding to the zigzag ridge 4.

  As shown in FIG. 2 and FIG. 3, the depth dimension D of the zigzag groove 5 is 3 μm when the release sheet 3 is peeled and removed and the one surface 6 of the adhesive layer 2 faces upward in a horizontal plane state. It is set to 50 μm or less. More preferably, it is set to 10 μm to 30 μm. When the depth dimension D is less than 3 μm, air cannot be properly released to the outside. When the depth dimension D exceeds 50 μm, the thickness dimension of the adhesive layer 2 becomes larger than necessary.

As shown in FIG. 5, the groove width dimension W ₁ (groove width dimension of the horizontal portion) and W ₂ (groove width dimension of the vertical portion) of the zigzag concave groove 5 are set to 50 μm or more and 400 μm or less. When the groove width dimensions W ₁ and W ₂ are less than 50 μm, air cannot be properly released to the outside. When the groove width dimensions W ₁ and W ₂ exceed 400 μm, the adhesive strength decreases.

Horizontal minutes distance H ₁ · vertical line minutes distance of H ₂ two adjacent zigzag grooves 5,5 is set to 1000μm or more 3000μm or less. When the horizontal line distance H ₁ and the vertical line distance H ₂ are less than 1000 μm, the adhesive strength decreases. Horizontal minutes distance H ₁ · vertical line minutes distance H ₂ is, if more than 3000 .mu.m, can not adequately escape of air to the outside.

  In the present invention, a large number of zigzag ridges are "parallel to each other" when the zigzag shape of each zigzag ridge is ignored and regarded as one (average) straight line To be parallel to each other.

The present invention provides a possible design changes, for example, the groove width W ₁ of the transverse portion, the groove width W ₂ of the longitudinal portion may be different even in the same. Further, the horizontal line minutes distance H ₁ and the vertical line minutes distance H ₂ may be different even in the same.

As described above, the present invention is a pressure-sensitive adhesive sheet in which the sheet substrate 1, the pressure-sensitive adhesive layer 2, and the release sheet 3 are sequentially laminated. And the zigzag groove 5 corresponding to the zigzag convex line 4 is formed on the one surface 6 of the pressure-sensitive adhesive layer 2 that is in close contact with the release sheet 3, and can prevent blistering, It can be in contact with the adherend surface as a surface and can exhibit stable adhesive strength over the entire surface. In addition, the strength is improved. Further, there is no specific cutting line position at which the beginning of peeling starts from the adherend surface. That is, even when an external force is applied to be turned over, the adhesive layer 2 is always in contact with the adherend surface, so that it is difficult to turn over and can be stably bonded. For example, the straight line _L 1 -L ₁ shown in FIG. 6 (A), the straight line _L 2 -L _2, even when cut at any linear position of the straight line _L 3 -L _3, hardly peeled off.

In addition, the release sheet 3 is peeled and removed, and the depth dimension D of the zigzag concave groove 5 is set to 3 μm or more and 50 μm or less and the groove width in the developed state where the adhesive layer 2 is in a horizontal plane and the one surface 6 faces upward. Since the dimensions W ₁ and W ₂ are set to 50 μm or more and 400 μm or less, excess air can be appropriately released to the outside, and the adhesive layer 2 does not become unnecessarily thick.

Moreover, the two horizontal minutes distance H ₁ · vertical line minutes distance of H ₂ zigzag grooves 5, 5 adjacent, since the set 1000μm or 3000μm or less, it is possible to release the proper excess air to the outside , Have sufficient adhesive strength.

DESCRIPTION OF SYMBOLS 1 Sheet base material 2 Adhesive layer 3 Release sheet 4 Zigzag convex line 5 Zigzag ditch 6 One side D Depth dimension H ₁ Horizontal line distance H ₂ Vertical line distance W ₁ Groove width dimension W ₂ Groove width dimension

Claims (3)

In an adhesive processed sheet in which a sheet substrate (1), an adhesive layer (2), and a release sheet (3) are sequentially laminated,
A large number of zigzag ridges (4) are formed in parallel to each other on the release sheet (3), and on one surface (6) of the adhesive layer (2) in close contact with the release sheet (3). A zigzag groove (5) is formed corresponding to the zigzag ridge (4). The release sheet (3) is peeled and removed, and the zigzag groove (5) has a depth dimension (5) in a developed state in which the adhesive layer (2) is in a horizontal plane and the one surface (6) is directed upward. The pressure-sensitive adhesive sheet according to claim 1, wherein D) is set to 3 µm or more and 50 µm or less and the groove width dimension (W ₁ ) (W ₂ ) is set to 50 µm or more and 400 µm or less. The pressure-sensitive adhesive processed sheet according to claim 2, wherein a distance (H ₁ ) and a distance (H ₂ ) between two adjacent zigzag grooves (5) and (5) are set to 1000 μm or more and 3000 μm or less.

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