JP2018123202A - Cushion tape - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cushion tape capable of reducing a step caused in the winding start part of a film by cushioning properties and also applicable to pasting using a pasting roll of an automatic winding change device.SOLUTION: Provided is a cushion tape 1 comprising: a long-length base material 2 having cushioning properties; a first adhesive layer 3 provided on the whole face of either side of the base material 2; and a second adhesive layer 4, in the other side of the base material 2, provided at a belt-like region 5 asymmetrical to a central line elongating parallel to both edges in the longitudinal direction of the base material 2 and dividing the base material 2 in a short length. According to this constitution, by the cushioning properties of the base material 2 itself and the relaxation of the rapid change of a step by non-adhesive regions 6a and 6b, the step is reduced. Further, since a film 11 can be pasted on the second adhesive layer 4 in a state where the whole of the second adhesive layer 4 is covered with the film 11, it is suitable for an automatic winding change device provided with a pasting roll 12.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a cushion tape used for fixing one end of a film to a core when the film is wound around a core (core).

  Films such as antireflection films and hard coat films are often manufactured roll-to-roll. Under the present circumstances, in order to wind a film in roll shape, the end of a film is stuck on the winding core called a core using an adhesive tape.

  FIG. 8 is a schematic view showing a state of use of a conventional double-sided tape, and is a view showing a state of starting film winding. FIG. 8 corresponds to a cross-sectional view along a plane orthogonal to the central axis of the core.

  As shown in FIG. 8, one end, which is the beginning of winding of the long film 82, is attached to the surface of the cylindrical core 80 via a strip-shaped double-sided tape 81 having a constant width. The core 80 is made of, for example, paper or resin. The double-sided tape 81 is configured, for example, by applying an acrylic pressure-sensitive adhesive to both surfaces of a polyethylene terephthalate base material, and a release sheet for protecting the pressure-sensitive adhesive surface is bonded to at least one of the pressure-sensitive adhesive surfaces. .

  When the film 82 is attached to the core 80, first, one adhesive surface of the double-sided tape 81 is attached to the surface of the core 80 so that the central axis of the core 80 and the longitudinal edge of the double-sided tape 81 are parallel to each other. wear. Next, the release sheet is peeled to expose the other adhesive surface of the double-sided tape 81, and as shown in FIG. 8, the entire exposed adhesive surface of the double-sided tape 81 is covered with the film 82, and the film 82 The film 82 is bonded to the double-sided tape 81 so that the edge 83 at one end and the one edge of the double-sided tape 81 substantially coincide. After fixing one end of the film 82 to the core 80 in this way, the film 82 is wound around the core 80 by rotating the core 80.

  As shown in FIG. 8, when the film 82 is fixed to the core 80 in a state where the edge 83 of one end of the film 82 and one end edge of the double-sided tape 81 are substantially matched, the edge of the fixed film 82 is fixed. In the vicinity of 83, a step corresponding to the total thickness of the film 82 and the double-sided tape 81 occurs. When the film 82 is wound in this state, a step is also generated in the wound film 82, and a step mark remains when the film 82 is unwound. The step marks on the film gradually disappear as the number of windings increases. However, in the winding method shown in FIG. 8, the step marks generated in a part of a certain length from the beginning of winding cannot be avoided. The quality is lowered and the yield of the film 82 is lowered.

  Thus, various types of double-sided tapes that can reduce the step marks on the film have been studied. For example, Patent Document 1 describes a configuration in which adhesive layers are provided on both sides of a cushion layer as a double-sided tape for fixing a web to a core. In patent document 1, generation | occurrence | production of the level | step difference trace accompanying winding of a film is reduced by making the cushion layer provided in the double-sided tape absorb the level | step difference of the film winding start part.

JP 2014-151985 A

  When a certain length of film is wound on the core, it is necessary to replace the core and fix one end of the film to a new core. Here, as a method of fixing one end of the film to the core, an operator manually attaches one end of the film to the double-sided tape attached to the core, and a mechanism for mechanically using the automatic winding switching device. There is a method of attaching one end to a double-sided tape. Here, the automatic winding switching device is a device that, when winding is completed, sequentially replaces the core, cuts the film, and attaches the film to the core. The automatic winding switching device is provided with an affixing roll used for adhering the film to the core, and by pressing the film superimposed on the double-sided tape on the outer peripheral surface of the core with the affixing roll. Affix the film.

  In Patent Document 1 described above, a double-sided tape having cushioning properties is applied over a predetermined length in the circumferential direction of the core, and one end of the web is fixed so as to cover a part of the adhesive layer on the surface of the double-sided tape. doing. In this case, when the vicinity of one end of the web is pressed by the affixing roll of the automatic winding switching device, the affixing roll comes into contact with the adhesive layer exposed at a location adjacent to one end of the web, and the adhesive is applied to the affixing roll. There may be a problem that the roll surface adheres and the roll surface is contaminated, or the double-sided tape is taken off by the affixing roll and peeled off.

  Therefore, the present invention provides a cushion tape that can reduce the level difference at the winding start portion of the film due to cushioning properties, and is also suitable for application using an application roll of an automatic winding switching device. For the purpose.

  The cushion tape according to the present invention is used to fix the end of the film to the core when the film is wound around the core. The first adhesive layer provided on the entire surface and the other side of the base material extending in parallel to both longitudinal edges of the base material, and a center line that bisects the base material in the lateral direction And a second pressure-sensitive adhesive layer provided in an asymmetric band-like region.

  According to the present invention, it is possible to provide a cushion tape that can reduce the level difference that occurs at the winding start portion of the film due to cushioning properties and that is also suitable for application using an application roll of an automatic winding switching device. With the goal.

The top view which shows typically the cushion tape which concerns on embodiment of this invention Sectional view along the II-II line shown in FIG. Schematic diagram showing how to apply the cushion tape shown in FIG. The schematic diagram which shows the winding method of the film using the cushion tape shown in FIG. Sectional drawing which shows the cushion tape which concerns on a comparative example typically Schematic diagram showing how to apply the cushion tape shown in FIG. The schematic diagram which shows the winding method of the film using the cushion tape shown in FIG. Schematic showing the fixed state of the film using conventional double-sided tape

  FIG. 1 is a plan view schematically showing a cushion tape according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view taken along line II-II shown in FIG.

  The cushion tape 1 includes a base material 2 and a first pressure-sensitive adhesive layer 3 and a second pressure-sensitive adhesive layer 4 provided on one surface and the other surface of the base material 2, respectively. Hereinafter, in this specification, the surface on which the first pressure-sensitive adhesive layer 3 is provided among both surfaces of the base material 2 is referred to as a “lower surface (lower surface in FIG. 2)”, and the second pressure-sensitive adhesive layer 4 is provided. This surface is referred to as “upper surface (upper surface in FIG. 2)”.

  The base material 2 is a long strip-shaped member made of a material having cushioning properties (shrinkability). As the base material 2, for example, a flexible material such as butyl rubber, soft rubber, or urethane can be used. In addition, it is more preferable to use a foam obtained by foaming these materials as the base material in order to ensure shrinkage. The hardness of the 6 mm-thick base material 2 measured with a durometer type A (Shore A) in accordance with JIS K 6253 is preferably 50 A or less. By setting the hardness of the base material 2 to 50 or less, it is possible to cause the base material 2 to have an appropriate cushioning property and to effectively reduce the level difference generated at the winding start portion of the film.

  The first pressure-sensitive adhesive layer 3 and the second pressure-sensitive adhesive layer 4 are formed by applying a pressure-sensitive adhesive to the substrate 2. Although the kind of adhesive is not specifically limited, An acrylic adhesive, a urethane type adhesive, etc. can be utilized suitably.

  The first pressure-sensitive adhesive layer 3 is provided on the entire surface of one surface (the lower surface in FIG. 2) of the substrate 2. On the other hand, the 2nd adhesive layer 4 is provided only in a part of other side (upper surface in FIG. 2) of the base material 2. FIG. More specifically, the second pressure-sensitive adhesive layer 4 extends in parallel with both longitudinal edges of the base material 2 on the other surface of the base material 2 and divides the base material 2 into two short sides. It is formed in a belt-like region 5 that is asymmetric with respect to the one-dot chain line in FIG. In the present embodiment, the other surface of the substrate 2 is not coated with an adhesive so as to sandwich the second adhesive layer 4 from both sides in the short direction (width direction) of the substrate 2. Adhesive areas 6a and 6b are provided.

  Next, the usage method of the cushion tape 1 which concerns on this embodiment is demonstrated.

  FIG. 3 is a schematic diagram showing a method of attaching the cushion tape shown in FIG. 1, and FIG. 4 is a schematic diagram showing a film winding method using the cushion tape shown in FIG. In addition, in FIG. 3, the sticking method of the film 11 using the sticking roll 12 of an automatic winding switching device is demonstrated.

  When fixing one end of the film 11 to the core 10, first, as shown in FIG. 3, the surface of the core 10 is arranged so that the central axis of the core 10 and the edge 13 in the longitudinal direction of the cushion tape 1 are parallel to each other. Cushion tape 1st adhesive layer 3 is stuck. Next, after peeling the release sheet (not shown) to expose the second adhesive layer 4 of the cushion tape 1, the entire second adhesive layer 4 is covered with the film 11, and The film 11 is aligned so that a portion having a predetermined width from the edge 13 of the film 11 overlaps the non-adhesive region 6 a, the film 11 is pressed by the attaching roll 12, and the film 11 is moved to the second adhesive layer 4. Paste to. At this time, the affixing roll 12 presses the film 11 while rotating from the non-adhesive region 6b side to the non-adhesive region 6a side, but the vicinity of the edge 13 of the film 11 is superimposed on the non-adhesive region 6a, Since the entire pressure-sensitive adhesive layer 4 is covered with the film 11, the adhesive roll 12 does not contact the pressure-sensitive adhesive even if it moves over the cushion tape 1 beyond the edge 13. Therefore, it is possible to prevent problems that the attaching roll 12 is contaminated by the adhesive or the cushion tape 1 is attached to the attaching roll 12 and peels off from the core 10.

  Thereafter, by rotating the core 10, the film 11 is wound around the core 10 as shown in FIG. At the time of winding the film 11, since a certain tension is applied to the film 11, the base material 2 of the cushion tape 11 is submerged with the winding of the film 11. Due to the sinking (shrinkage) of the base material 2, the step at the winding start portion of the film 11 is absorbed.

  As described above, in the cushion tape 1 according to this embodiment, the pair of non-adhesive regions 6 a and 6 b are provided so as to sandwich the second adhesive layer 4 in the short direction of the base material 2. Without matching both edges of the substrate 2 and both edges of the second pressure-sensitive adhesive layer 4, and without matching the edge of the substrate 2 and the edge 13 of the film 11, respectively. 4 is stepped from the surface of the core 10 to the upper surface of the film 11 fixed to the second pressure-sensitive adhesive layer 4 in steps V to X indicated by arrows in FIG. At the same time, the step is gradually reduced at Y and Z indicated by arrows. In the conventional example shown in FIG. 8, since the edge of the double-sided tape and the edge of the film are matched, the height change from the surface of the core to the upper surface of the fixed film becomes abrupt. The occurrence of step marks on the wound film was remarkable.

  On the other hand, when the cushion tape 1 according to the present embodiment is used, the height change at the locations V to Z shown in FIG. 4 becomes gentler than the conventional example of FIG. The level difference is also reduced by the contraction of the substrate 2 having the property. Therefore, it becomes possible to reduce the level | step difference mark which arises on the film 11 rather than the case where the conventional double-sided tape is used.

  Here, a comparative example will be described in order to help understanding of the effect of the cushion tape according to the present invention.

  FIG. 5 is a cross-sectional view schematically showing a cushion tape according to a comparative example.

  A cushion tape 85 shown in FIG. 5 includes a base material 86 having cushioning properties, an adhesive layer 87 provided on the entire surface of one surface of the base material 86, and an adhesive provided on the entire surface of the other surface of the base material 86. Layer 88. The cushion tape 85 according to this comparative example has the same configuration as the double-sided tape according to the conventional example shown in FIG. 8 and the adhesive layer, but differs in that the base material has cushioning properties.

  6 is a schematic diagram showing a film winding method using the cushion tape shown in FIG. 5, and FIG. 7 is a schematic diagram showing a method for attaching the cushion tape shown in FIG.

  The use method of the cushion tape 85 shown in FIG. 6 is basically the same as that of the present embodiment, and the end edge 83 of one end of the film 82 is shifted from the end edge of the cushion tape 85, and the end edge 83 of the film 82 is predetermined. The film 82 is bonded to the pressure-sensitive adhesive layer 88 so as to cover almost half of the pressure-sensitive adhesive layer 88 in the area. In this way, bonding without aligning the edge of the cushion tape 85 and the edge of the film 82 increases the height from the surface of the core 80 to the surface of the film 82 fixed to the adhesive layer 88 step by step. This is because the level difference in the vicinity of the edge 83 of the film 82 is reduced by changing. Thereafter, by rotating the core 80, the film 82 is wound around the core 80 as shown in FIG.

  Since the base material 86 used for the cushion tape 85 has cushioning properties as in the present embodiment, the base material 86 contracts as the film 82 is wound, and the vicinity of both ends of the cushion tape (FIG. 7). The step at the point indicated by the arrow in FIG. As a result, step marks generated on the film 82 can be reduced.

  However, in the cushion tape 85 according to the comparative example, the pressure-sensitive adhesive layer 88 is provided on the entire surface of the base material 86, so that the pressure-sensitive adhesive is in a state where the edge 83 of the film 82 is shifted from the edge of the cushion tape 85. When bonded to the layer 88, a part of the adhesive layer 88 is exposed when the film 82 is fixed, as shown in FIG. When the automatic winding switching device is used, when the film 82 is pressed while rotating the attaching roll 89 in this state, the attaching roll 89 comes into contact with the exposed adhesive layer after exceeding the edge 83 of the film 82. As a result, the cushion tape 85 according to the comparative example has a problem that the attaching roll 89 is contaminated with the adhesive or the cushion tape 85 attached to the attaching roll 89 is peeled off. Therefore, the cushion tape 85 according to the comparative example is not suitable for use in the automatic winding switching device.

  On the other hand, the cushion tape 1 according to the present embodiment, as described with reference to FIG. 2, is because the entire second adhesive layer 4 is covered with the film 11 when pressed by the attaching roll 12. There is no problem as in the comparative example, and it can be suitably used for an automatic winding switching device.

  Here, with reference to FIG. 1 and 2 again, the preferable dimension of the cushion tape which concerns on this embodiment is demonstrated.

  The thickness A of the base material 2 is selected within the range of 50 to 1000 μm depending on the thickness of the film to be wound and the shrinkability of the material used as the base material 2. When the thickness of the base material 2 is less than 50 μm, the contraction amount (sink margin) of the base material at the time of winding the film is insufficient, and the step generated at the winding start portion cannot be sufficiently reduced. On the other hand, when the thickness of the base material 2 exceeds 1000 μm, the level difference increases due to the thickness of the base material 2 itself. It is preferable that the thickness of the base material 2 is 1 to 5 times the thickness of the film so that the sinking amount of the base material 2 can be sufficiently secured when the film is wound.

  The width W in the short direction of the substrate 2 is preferably 30 to 60 mm. Since it is necessary to provide at least the second pressure-sensitive adhesive layer 4 and the non-stick region 6a on the surface of the base material 2, if the width W of the base material 2 is too small, the width b of the second pressure-sensitive adhesive layer 4 And the width a of the non-adhesive region 6a also needs to be reduced. Although the width b of the second pressure-sensitive adhesive layer 4 and the width a of the non-adhesive region 6a will be described later, in order to secure these dimensions and improve workability when fixing the film 11, The width W is preferably 30 mm or more. In addition, if the width W of the base material 2 is too large, the work of attaching the cushion tape 1 to the core 10 becomes difficult, so the width W of the base material 2 is 60 mm or less in order to improve the workability of the attachment. It is preferable that However, the width W of the base material 2 is not necessarily 30 to 60 mm, and can be appropriately selected according to the diameter and use of the core 10.

  The thickness B of the first pressure-sensitive adhesive layer 3 and the thickness C of the second pressure-sensitive adhesive layer 4 are preferably 5 to 30 μm. By setting the thickness B of the first pressure-sensitive adhesive layer 3 and the thickness C of the second pressure-sensitive adhesive layer 4 within this range, it is possible to suppress the entire cushion tape 1 from becoming thicker due to the thickness of the pressure-sensitive adhesive layer itself. Generation can be reduced.

  The width b of the second pressure-sensitive adhesive layer 4 is preferably 8 to 20 mm. By setting the width b of the second pressure-sensitive adhesive layer 4 within this range, it is possible to ensure the adhesive force necessary for fixing the film 11. In addition, if the adhesive force of the 1st adhesive layer 3 and the 2nd adhesive layer 4 is 4 N / 20mm width or more, the adhesive force required for fixation of the film 12 is securable.

  The width a of the non-adhesive region 6a is preferably 15 to 20 mm, and the width c of the non-adhesive region 6b is preferably 1 to 20 mm. When the film 11 is fixed, it is bonded to the second pressure-sensitive adhesive layer 4 in a state where a part of the film 11 is overlapped with the non-adhesive region 6a, so that the width of the non-adhesive region is taken into consideration for ease of alignment. a is preferably 15 to 20 mm. In this case, not only the alignment of the film 11 by the automatic winding switching device but also the alignment of the film 11 by the operator by hand is facilitated, and the workability of the fixing operation of the film 11 by the operator is improved. . On the other hand, since the non-adhesive region 6b is provided for the purpose of reducing the level difference of the edge portion of the cushion tape 1, the width c of the non-adhesive region 6b is such that the edge portion of the substrate 2 is exposed. It may be a dimension and is preferably 1 to 20 mm.

  Moreover, in this embodiment, the 2nd adhesive layer 4 is provided in the strip | belt-shaped area | region 5 which becomes asymmetrical with respect to the centerline (dot-dash line of FIG. 1) which bisects the base material 2 in a transversal direction, The width a of the non-adhesive region 6a is larger than the width c of the non-adhesive region 6b. In the vicinity of the non-adhesive region 6b, a level difference from the second adhesive region 4 to the surface of the core 10 is generated on the film 11, whereas in the vicinity of the non-adhesive region 6a, one turn from the surface of the core 10 is performed. A level difference up to the surface of the eye film 11 is generated in the second film 11. That is, the step on the non-adhesive region 6a side becomes larger than the non-adhesive region 6b side by the amount of the thickness of the first roll film 11 added to the thickness of the cushion tape 1. Therefore, the width a of the non-adhesive region 6a is made large, and the ratio of the level difference (step height) from the surface of the core 10 to the surface of the first roll film 11 with respect to the length of the film 11 in the circumferential direction of the core 10 is It is preferable to reduce the level of the film 11 in the radial direction of the core 10 from the viewpoint of reducing step marks on the film 11. Therefore, in the present embodiment, the width a of the non-adhesive region 6a is made larger than the width c of the non-adhesive region 6b, and the second adhesive layer 4 is formed asymmetrically.

  As described above, according to the cushion tape 1 according to the present embodiment, the base material 2 contracts and the step near the edge 13 of the film 11 attached to the core 10 can be absorbed. Step traces generated in the film 11 wound up by 10 can be reduced. In particular, in the present embodiment, the non-adhesive areas 6a and 6b to which the adhesive is not applied are provided on both sides of the second adhesive layer 4 in the short direction of the base material 2, so that the cushion tape 1 is the core. 10, the height from the surface of the core 10 to the surface of the second pressure-sensitive adhesive layer 4 changes stepwise. Therefore, in addition to the step reduction due to the cushioning property of the base material 2 itself, the step difference is reduced also by the fact that the sudden change in the step is alleviated by the non-adhesive regions 6a and 6b, and the step mark of the film 11 is more effective. Can be suppressed. Moreover, in this embodiment, the step reduction effect can be exhibited not only on the non-adhesive region 6a side where the step is relatively large but also on the non-adhesive region 6b side.

In the cushion tape 1 according to the present embodiment, the edge 13 of the film 11 is formed on the base 2.
Since the film 11 can be bonded to the second pressure-sensitive adhesive layer 4 in a state where the entire second pressure-sensitive adhesive layer 4 is covered with the film 11, the film 11 is bonded. When pressure bonding with the roll 12, the adhesive does not adhere to the affixing roll 12, which is suitable for use in an automatic winding switching device.

  Examples in which the present invention is specifically implemented will be described below.

  An acrylic adhesive was applied as an adhesive to the entire surface of one side of the base material made of acrylic and the belt-like region on the other side, and cushion tapes according to Examples 1 to 14 and Comparative Examples 1 to 4 were produced. Table 1 shows the thicknesses of the base material, the first adhesive layer and the second adhesive layer, and the widths of the second adhesive layer and the non-adhesive region.

  Further, as Comparative Example 5, the conventional double-sided tape shown in FIG. 8 (the base material has no cushioning property) was used. The double-sided tape used in Comparative Example 5 has a thickness of 25 μm and a width of 40 mm.

  Using the cushion tape (double-sided tape) of each embodiment and each comparative example, after fixing one end of an acrylic film having a thickness of 65 μm to a glass fiber reinforced plastic core (outer diameter 167 mm), the film is wound around the core. It was. The film was bonded to the core using an automatic winding switching device.

  The suitability for the automatic take-up switching device and the effect of reducing the step marks on the film were evaluated as follows.

  As for the suitability for the automatic winding switching device, when the film is bonded to the core, the adhesive is not attached to the affixing roll, and the position is shifted so that the edge of one end of the film overlaps the non-adhesive region. The case where the films were bonded together was designated as “◯”, and the case where the adhesive was adhered to the affixing roll, or the case where the edges of one end of the film were detached from the non-adhesive area was designated as “x”.

  Regarding the film step marks, the film wound around the core is unwound again, and the presence or absence of the step marks at the part 50 m from the one end fixed to the core is visually confirmed. “O”, and “x” when a step mark was observed.

  In Table 1, the dimension of the cushion tape which concerns on Examples 1-14 and Comparative Examples 1-5 and an evaluation result are shown collectively. In addition, "-" in evaluation of Table 1 shows that it is not evaluated.

  First, when the double-sided tape according to Comparative Example 5 was used, when the film wound around the core was unwound, a step mark was observed at a portion 150 m from one end fixed to the core.

  Moreover, when the cushion tape which concerns on the comparative examples 1 and 3 was used, since the non-adhesion area | region was not provided on the base material, the adhesive adhered to the sticking roll. When the cushion tapes according to Comparative Examples 2 and 4 were used, the film was not bonded so that the edge of one end of the film overlapped with the non-adhesive region, and a part of the second adhesive region was exposed, so that the adhesive was applied to the application roll. Attached. Therefore, none of the cushion tapes according to Comparative Examples 1 to 4 is suitable for use in the automatic winding switching device.

  On the other hand, the cushion tapes according to Examples 1 to 14 are provided with a second adhesive layer that is asymmetric and strip-shaped with respect to the center line in the short direction of the base material on the base material having cushioning properties. Therefore, as shown in Table 1, there is no particular problem even if one end of the film is fixed by the automatic winding switching device, and the step marks are significantly reduced as compared with the conventional double-sided tape according to Comparative Example 5. It was.

  INDUSTRIAL APPLICABILITY The present invention can be used as a double-sided tape for fixing a functional film such as a barrier film, other resin films, sheets, web materials, and the like to optical cores such as hard coat films and antireflection films.

DESCRIPTION OF SYMBOLS 1 Cushion tape 2 Base material 3 1st adhesive layer 4 2nd adhesive layer 5 Band-like area | region 6a, 6b Non-adhesion area | region 10 Core 11 Film 13 Edge

Claims (9)

When winding the film around the core, a cushion tape used to fix the edge of the film to the core,
A long base material having cushioning properties;
A first pressure-sensitive adhesive layer provided on the entire surface of one side of the substrate;
Of the other surface of the base material, a second one provided in a belt-like region that extends in parallel with both longitudinal edges of the base material and is asymmetric with respect to a center line that bisects the base material in the lateral direction. A cushion tape comprising a pressure-sensitive adhesive layer.   The cushion tape according to claim 1, wherein a pair of non-adhesive regions having no adhesiveness are provided so as to sandwich the second adhesive layer from both sides in the short direction of the substrate.   The cushion tape according to claim 2, wherein a width of each of the pair of non-adhesive regions in a short direction of the base material is 1 to 20 mm.   The cushion tape in any one of Claims 1-3 whose width of the transversal direction of the said base material is 30-60 mm. The thickness of the base material is 50 to 1000 μm,
The thickness of the first pressure-sensitive adhesive layer is 5 to 30 μm,
The cushion tape in any one of Claims 1-4 whose thickness of a said 2nd adhesive layer is 5-30 micrometers.   The cushion tape according to any one of claims 1 to 5, wherein the substrate is made of a butyl rubber-based or urethane-based material.   The cushion tape according to any one of claims 1 to 6, wherein the substrate is made of a porous foam.   The cushion tape in any one of Claims 1-7 in which the said base material consists of soft rubber.   The cushion tape in any one of Claims 1-8 whose hardness of the said base material measured based on JISK6253 is 50 A or less.

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