JP6696828B2 - Adhesive tape structure - Google Patents

Description

  The present technology relates to an elongated adhesive tape structure in which adhesive films are connected.

  Conventionally, ACF (Anisotropic Conductive Film), NCF (Non Conductive Film), etc. are known as an adhesive film for adhering various electronic components. Such an adhesive film is, for example, sandwiched between a base film and a cover film, and wound on a reel in the state of a narrow and long adhesive tape, and stored, stored, transported, or the like.

  In recent years, there has been a demand for so-called "longer lengthening" in which the length of an adhesive tape that can be wound around one reel is made as long as possible. For example, in Patent Document 1, an adhesive tape is connected via a connecting tape to increase the length, and the peeling cover film of the adhesive tape and the peeling film of the connecting tape are configured to be integrally peelable and attached. An adhesive tape has been proposed which allows an adhesive film to be continuously attached to an adherend using a device.

JP, 2005-086325, A

  However, in the conventional lengthening, the adhesive may squeeze out at the connecting portion between the connecting tape and the adhesive tape, which has a larger thickness than other portions, due to the load of the winding pressure due to the increase in the number of windings. Further, when the adhesive squeezes out, the transport speed may change temporarily during the peeling of the cover film, and blocking may occur.

  The present technology solves the above-mentioned problems, and provides an adhesive tape structure capable of suppressing the occurrence of blocking when the cover film is peeled off.

In order to solve the above-mentioned problem, an adhesive tape structure according to an embodiment of the present technology is provided with a plurality of adhesive tapes provided with an adhesive film, a cover film, an adhesive film, and a release film. And a connecting tape for connecting between the plurality of adhesive tapes, wherein the connecting tape has an end portion of the release film on the starting end side in the cover film releasing direction extended on the cover film of the adhesive tape. film is aligned with an end portion of the adhesive film and Ri name is configured to be peeled off together, the end of the cover film.

Further, the method for manufacturing an adhesive tape structure according to the present technology includes a removing step of removing an end portion of one adhesive film of the original fabric connecting tape provided with an adhesive film and a release film in this order, and the removing step. the release film of the adhesive film portion was, adhesive film and a cover film is provided, overlapping the end portion and the adhesive film ends and are aligned with and raw adhesive tape cover film on the cover film connected Then, a connecting step in which cover films of a plurality of original fabric adhesive tapes are integrally peeled off, and a cutting step of cutting the connected original fabric adhesive tapes and original fabric connecting tapes to a predetermined width, And a winding step of winding the cut adhesive tape and the connecting tape on a reel so that an end portion of the partially removed adhesive film is a starting end side in a cover film peeling direction.

  According to the present technology, since the end of the release film on the start side in the cover film peeling direction is extended onto the cover film of the adhesive tape, the protrusion on the end of the adhesive tape on the end side in the cover film peeling direction does not stick out. Even if it occurs, the cover film can be strongly peeled off when the cover film is peeled off, and the occurrence of blocking can be suppressed.

FIG. 1 is a diagram schematically showing a sticking device for sticking an adhesive film to a connecting member. FIG. 2 is a cross-sectional view schematically showing the connecting portion of the adhesive tape structure of the present embodiment. FIG. 3 is a cross-sectional view schematically showing the terminal side connecting portion of the adhesive tape of Example 1. FIG. 4 is a cross-sectional view schematically showing the terminal-side connecting portion of the adhesive tape of Example 2. FIG. 5: is sectional drawing which shows typically the terminal end side connection part of the adhesive tape of the specific example 3. As shown in FIG. FIG. 6 is a cross-sectional view schematically showing the terminal side connecting portion of the adhesive tape of Example 4. FIG. 7 is a cross-sectional view schematically showing the connecting portion on the starting end side of the adhesive tape of Example 5. FIG. 8 is a cross-sectional view schematically showing the starting end side connecting portion of the adhesive tape of Example 6. FIG. 9 is a cross-sectional view schematically showing the starting end side connecting portion of the adhesive tape of Example 7. FIG. 10 is a cross-sectional view schematically showing the connecting portion on the starting end side of the adhesive tape of Example 8. FIG. 11 is a cross-sectional view schematically showing the connecting portion on the starting end side of the adhesive tape of Example 9. FIG. 12 is a cross-sectional view schematically showing the connecting portion on the starting end side of the adhesive tape of Example 10. FIG. 13 is a cross-sectional view schematically showing the connecting portion on the starting end side of the adhesive tape of Example 11. FIG. 14 is a cross-sectional view schematically showing the connecting portion on the starting end side of the adhesive tape of Example 12. FIG. 15 is a cross-sectional view schematically showing the connecting portion on the starting end side of the adhesive tape of Example 13. FIG. 16 is a cross-sectional view schematically showing the connecting portion on the starting end side of the adhesive tape of Example 14.

Hereinafter, embodiments of the present technology will be described in detail in the following order.
1. Adhesive device for adhesive tape structure 2. Adhesive tape structure 3. Concrete example

<1. Adhesive tape structure attachment device>
FIG. 1 is a diagram schematically showing a sticking device for sticking an adhesive film to a connecting member. As shown in FIG. 1, the sticking device includes a winding shaft 3 for mounting a reel 2 wound with an adhesive tape structure having an adhesive tape 1, rollers 4a to 4e for winding the adhesive tape structure, and a cover film. A peeling roller 5 for peeling, a cutter portion 6 for cutting the adhesive film into a predetermined length, and a sticking portion 7 for sticking the adhesive film.

  As will be described later, in the adhesive tape structure, a plurality of adhesive tapes 1 in which a base film 1a, an adhesive film 1b, and a cover film 1c are provided in this order are connected via a connecting tape. The length of the adhesive tape structure is not particularly limited, but a length of 50 to 5000 m can be preferably used from the viewpoint of preventing frequent replacement of the reel.

  The adhesive tape structure drawn out from the reel 2 is drawn around by the rollers 4a to 4e, first, the cover film 1c is peeled off by the peeling roller 5, and the cover film 1c is wound up. Next, the cutter 6 cuts only the adhesive film 1b into a predetermined length without cutting the base film 1a. Then, the thermocompression bonding head of the sticking portion 7 presses the adhesive tape 1 from the side of the base film 1a, whereby the adhesive film 1b having a predetermined length is transferred to the sticking target 9 on the stage 8. The adhesive tape 1 to which the adhesive film 1b is transferred is wound only as the base film 1a.

  Further, the sticking device controls the connecting tape so that it is not pressed by the thermocompression bonding head. For example, by making the connecting tape non-transparent and detecting the connecting tape by the optical sensor of the cutter unit 6, the connecting tape is prevented from being half-cut and the adhesive tape structure is conveyed so as not to be pressed by the thermocompression bonding head. To control.

<2. Adhesive tape structure>
FIG. 2 is a cross-sectional view schematically showing the connecting portion of the adhesive tape structure of the present embodiment. As shown in FIG. 2, the adhesive tape structure includes a first adhesive tape 10, a second adhesive tape 20, and a connecting tape 30 that connects the first adhesive tape 10 and the second adhesive tape 20. Equipped with.

  The first adhesive tape 10 and the second adhesive tape 20 are respectively provided with base films 11 and 21, adhesive films 12 and 22, and cover films 13 and 23 in this order. The connecting tape 30 is provided with a connecting base material 31, an adhesive film 32, and a release film 33 in this order.

  Further, the end portion of the base film 11 of the first adhesive tape 10 and the end portion of the connecting base material 31 of the connecting tape 30 are adhered by the first base side adhesive member 41, and the base of the second adhesive tape 20. The end portion of the film 21 and the end portion of the connection base material 31 of the connection tape 30 are adhered by the second base side adhesive member 42. As a result, the base films 11 and 21 and the connection base material 31 are configured to be integrally separated.

  Further, the end portion of the cover film 13 of the first adhesive tape 10 and the end portion of the release film 33 of the connection tape 30 are adhered by the first cover-side adhesive member 51, and the cover film of the second adhesive tape 20. The end of 23 and the end of the release film 33 of the connecting tape 30 are adhered by the second cover-side adhesive member 52. Thereby, the cover films 13 and 23 and the release film 33 are configured to be integrally released.

  The base-side adhesive members 41 and 42 and the cover-side adhesive members 51 and 52 are those in which an acrylic or silicone adhesive layer is provided on a base material. Further, the length thereof is not particularly limited, but it has an adhesive force for surely connecting the adhesive tapes 10 and 20 and the connecting tape 30, and makes workability at the time of bonding as easy as possible. From the viewpoint, it is more preferably set to 10 to 100 mm.

[Adhesive tape]
The adhesive tapes 10 and 20 have the same structure, and have a three-layer structure in which the adhesive films 12 and 22 and the cover films 13 and 23 are sequentially provided on the base films 11 and 21. The adhesive tapes 10 and 20 are configured to be longer than the length of the connecting tape 30, and the lengths of the adhesive tapes 10 and 20 may be the same or different. The lengths of the adhesive tapes 10 and 20 are not particularly limited, but the number of skips of the connecting tape 30 when the adhesive tape structure is used is reduced, and the maximum length of the application equipment for the adhesive tapes 10 and 20. Considering the coating length, a coating having a length of 10 to 1000 m can be preferably used.

  The base films 11 and 21 are support films formed in a tape shape and supporting the adhesive films 12 and 22. Examples of the base material used for the base films 11 and 21 include PET (Poly Ethylene Terephthalate), OPP (Oriented Polypropylene), PMP (Poly-4-methylpentene-1), and PTFE (Polytetrafluoroethylene). Further, as the base films 11 and 21, those in which at least the surfaces on the adhesive films 12 and 22 side are subjected to a release treatment with, for example, a silicone resin can be preferably used.

  The thickness of the base films 11 and 21 is not particularly limited, but from the viewpoint of securing the material strength and not increasing the winding diameter, the thickness of 10 to 100 μm can be preferably used. The widths of the base films 11 and 21 are not particularly limited, but from the viewpoint of surely covering various electronic components, those having a width of 20 to 2000 μm can be preferably used.

  The adhesive films 12 and 22 are anisotropic conductive films (ACF: Anisortropic) used for COG (Chip On Glass) mounting for mounting electronic components on a circuit board or FOG (Film On Glass) mounting for connecting substrates to each other. Conductive Film), an adhesive film (NCF: Non Conductive Film), a conductive adhesive film which connects the electrode of a solar cell, and a tab wire, etc. are illustrated. As the binder of the adhesive films 12 and 22, a resin used for an adhesive of a usual adhesive tape, for example, an epoxy resin, a phenoxy resin, a urethane resin, or the like can be used.

  The thickness of the adhesive films 12 and 22 is not particularly limited, but it is more preferably set to 10 to 100 μm from the viewpoint of surely connecting terminals having various height variations of various electronic components.

  The cover films 13 and 23 protect the adhesive films 12 and 22, and are peeled off during use. As the base material used for the cover films 13 and 23, the same base materials as the base films 11 and 21 can be used. Further, as the cover films 13 and 23, those in which at least the surfaces on the adhesive films 12 and 22 side are subjected to a release treatment with, for example, a silicone resin can be preferably used.

  The thickness of the cover films 13 and 23 is not particularly limited, but it is more preferably set to 10 to 100 μm from the viewpoint of ensuring the material strength and not increasing the winding diameter.

[Connecting tape]
The connecting tape 30 has a three-layer structure in which an adhesive film 32 and a release film 33 are sequentially provided on a connecting base material 31. The connecting tape 30 is configured to be shorter than the adhesive tapes 10 and 20, and the connecting tapes 30 may have the same length or different lengths. The length of the connecting tape 30 is not particularly limited, but it is more preferably set to 50 to 1000 mm from the viewpoint that it can be sensed by an optical sensor and the transport speed of the line is not lowered as much as possible.

  The connection base material 31 is a support film that is formed into a tape shape and supports the adhesive film 32. As the base material used for the connection base material 31, the same base materials as the base films 11 and 21 can be used. Further, as the connecting base material 31, a material made of a non-translucent material that can be detected by an optical sensor can be used. For example, a material in which a black filler is dispersed in a resin made of PET can be used. .. Thereby, the connecting tape 30 can be detected by the optical sensor, the connecting tape 30 can be prevented from being half-cut, and the conveyance of the adhesive tape structure can be controlled so as not to be pressed by the thermocompression bonding head.

  The thickness and width of the connection base material 31 are not particularly limited, but from the viewpoint of smoothly winding, drawing out and running the adhesive tape structure, the base films 11 and 21 of the adhesive tapes 10 and 20 can be used. It is preferable that they are equivalent.

  The pressure-sensitive adhesive film 32 is for smoothly peeling off the release film 33, and is a portion that is not originally transferred to the adherend and is skipped. As the base material used for the adhesive film 32, any resin having the same composition as or a different composition from the adhesive films 12 and 22 of the adhesive tapes 10 and 20 can be used. Further, in order to improve storage stability, a non-cured resin or a cured resin can be used.

  The peeling force between the adhesive film 32 and the peeling film 33 is preferably equal to the peeling force between the adhesive films 12 and 22 and the cover films 13 and 23. Thereby, when peeling the release film 33, it is possible to prevent the transport speed from temporarily changing and causing a shift in the transport speed of the manufacturing line. Further, the thickness of the adhesive film 32 is not particularly limited, but it is preferable that it is equal to that of the adhesive films 12 and 22.

  The peeling film 33 protects the adhesive film 32 and is peeled together with the cover films 13 and 23 when used. As the base material used for the release film 33, the same materials as those for the cover films 13 and 23 can be used.

  The thickness of the release film 33 is not particularly limited, but is the same as the cover films 13 and 23 of the adhesive tapes 10 and 20 from the viewpoint of smoothly winding, drawing and running the adhesive tape structure. Preferably.

<3. Specific example>
The adhesive tape structure shown as a specific example has a plurality of adhesive tapes in which a base film, an adhesive film, and a cover film are provided in this order, a connecting base material, an adhesive film, and a release film are provided in this order. , A connecting tape for connecting between the adhesive tapes, the connecting tape, the end of the release film on the starting end side of the cover film peeling direction is extended on the cover film of the adhesive tape, The cover film is configured to be integrally peeled off.

  That is, the adhesive tape structure is configured by bonding the end portion of the release film 33 to the cover film 10 of the adhesive tape 10 in the connecting tape 30 shown in FIG. As a result, even when the end portion of the adhesive tape 10 on the terminal side in the cover film peeling direction has a protrusion, the cover film 13 can be strongly peeled off when the cover film 13 is peeled off, and the occurrence of blocking is suppressed. be able to.

  Further, a method for manufacturing an adhesive tape structure shown as a specific example is a removing step of removing one end of one adhesive film of a raw fabric connecting tape in which a connecting base material, an adhesive film, and a release film are provided in this order. And the peeling film at the end of the removed adhesive film are overlapped and connected on the cover film of the original fabric adhesive tape, and the cover films of the plurality of original fabric adhesive tapes are integrally separated. A step, a cutting step of cutting the connected original fabric adhesive tape and the original fabric connecting tape to a predetermined width, and the cut adhesive tape and the connecting tape are covered by the end of the partially removed adhesive film. And a winding step of winding the film on a reel so as to be the starting end side in the film peeling direction.

  Hereinafter, a specific configuration of the connecting portion of the adhesive tape on the terminal side in the cover film peeling direction, that is, the terminal side connecting portion of the adhesive tape in which the first adhesive tape 10 is connected to the connecting tape 30 will be described. Similarly, a specific structure of the connecting portion of the adhesive tape on the starting end side in the cover film peeling direction, that is, the starting end side connecting portion of the adhesive tape in which the second adhesive tape 20 is connected to the connecting tape 30 will be described. The same components as those of the adhesive tape structure shown in FIG. 2 are designated by the same reference numerals and the description thereof will be omitted.

[Specific Example 1]
FIG. 3 is a cross-sectional view schematically showing the terminal side connecting portion of the adhesive tape of Example 1. The adhesive tape structure shown as a specific example 1 is an adhesive tape 10 in which a base film 11, an adhesive film 12, and a cover film 13 are provided in this order, a connecting base material 31, an adhesive film 32, and a release film 33. And the connecting tape 30 that is connected to the adhesive tape 10.

  The end portion of the peeling film 33 on the starting end side in the cover film peeling direction of the connecting tape 30 is extended onto the cover film 13 of the adhesive tape 10, so that the cover film 13 of the adhesive tape 10 is peeled integrally. It is composed of. Specifically, the first cover-side adhesive member 51 is attached from the extended end of the release film 32 to the cover film 13. The extension length of the end portion of the release film 33 is preferably 2 mm to 20 mm because the effect of easy release cannot be obtained if it is too short or too long.

  According to the adhesive tape structure shown as the specific example 1, since the end portion of the release film 33 on the start end side in the cover film release direction is extended on the cover film 13 of the adhesive tape 10, the end portion of the adhesive tape is Even if the edge portion is protruded, the cover film 13 can be strongly peeled off and the occurrence of blocking can be suppressed.

  In the adhesive tape structure shown as the specific example 1, one end of one adhesive film of the original fabric connecting tape is removed in the above-mentioned removing step, and the release film at the end of the removed adhesive film is removed in the connecting step. It can be obtained by stacking and connecting the cover film of the anti-adhesive tape.

  In addition, in the specific example 1, the end side connecting portion of the adhesive tape is shown and described, but the start end side connecting portion of the adhesive tape may be configured in the same manner. That is, in the adhesive tape, the end portion of the cover film on the starting end side in the cover film peeling direction is extended on the peeling film of the connecting tape, and the cover film of the adhesive tape is configured to be integrally peeled. May be. This can prevent the occurrence of blocking at the connecting portion of the adhesive tape on the starting end side in the cover film peeling direction.

[Specific example 2]
FIG. 4 is a cross-sectional view schematically showing the terminal-side connecting portion of the adhesive tape of Example 2. The adhesive tape structure shown as the second specific example includes the adhesive tape 10 and the connecting tape 30 as in the first specific example.

  The connecting tape 30 is formed by extending the end of the release film 33 on the starting end side in the cover film release direction onto the cover film 13 of the adhesive tape 10, and the end of the release film 33 is the first cover-side adhesive member 51a. It is fixed on the cover film 13. The first cover-side adhesive member 51a is attached from the end portion of the release film 32 to the cover film 13, and the end portion of the first cover-side adhesive member 51a on the terminal side in the cover film peeling direction is the release film. It is on the overlapping portion of 33 and the cover film 13.

  According to the adhesive tape structure shown as the second specific example, since the end portion of the release film 33 on the start end side in the cover film release direction is extended onto the cover film 13 of the adhesive tape 10, the end portion of the adhesive tape is removed. Even if the edge portion is protruded, the cover film 13 can be strongly peeled off, and blocking can be suppressed. Further, since the end portion of the first cover-side adhesive member 51a on the terminal side in the cover film peeling direction is located on the overlapping portion of the peeling film 33 and the cover film 13, the end portion of the adhesive tape 10 on the terminal side is protruded. Can be suppressed.

  In the adhesive tape structure shown as the specific example 2, one end of one adhesive film of the original fabric connecting tape is removed in the above-described removing step, and the release film at the end of the removed adhesive film is removed in the connecting step. It can be obtained by stacking the anti-adhesive tape on the cover film and fixing it with the first cover-side adhesive member of the original fabric.

  In addition, in the specific example 2, the end side connecting portion of the adhesive tape has been described, but the starting end side connecting portion of the adhesive tape may be configured in the same manner. That is, in the adhesive tape, the end portion of the cover film on the starting end side in the peeling direction of the cover film is extended on the release film of the connecting tape, and the end portion of the cover film is on the release film with the first cover-side adhesive member. It may be fixed to. This can prevent the occurrence of blocking at the connecting portion of the adhesive tape on the starting end side in the cover film peeling direction.

[Specific example 3]
FIG. 5: is sectional drawing which shows typically the terminal end side connection part of the adhesive tape of the specific example 3. As shown in FIG. The adhesive tape structure shown as the specific example 3 includes the adhesive tape 10 and the connecting tape 30 as in the specific example 1.

  The end portion of the peeling film 33 on the starting end side in the cover film peeling direction of the connecting tape 30 is extended onto the cover film 13 of the adhesive tape 10, so that the cover film 13 of the adhesive tape 10 is peeled integrally. It is composed of. Specifically, the overlapping portion of the release film 33 and the cover film 13 is attached with the double-sided adhesive tape 33a, and the first cover-side adhesive member 51 is attached from the end of the release film 33 to the cover film 13. ing.

  According to the adhesive tape structure shown as the specific example 3, since the end portion of the peeling film 33 on the starting end side in the cover film peeling direction is extended onto the cover film 13 of the adhesive tape 10, the end portion of the adhesive tape is Even if the edge portion is protruded, the cover film 13 can be strongly peeled off and the occurrence of blocking can be suppressed. Further, since the overlapping portion of the peeling film 32 and the cover film 13 is bonded with the double-sided adhesive tape 33a, the overlapping portion of the peeling film 32 and the cover film 13 when the adhesive tape structure is bent by the roller of the sticking device. Thus, it is possible to prevent the release film 32 from floating from the cover film 13.

  In the adhesive tape structure shown as the specific example 3, one end of one adhesive film of the original fabric connecting tape is removed in the above-mentioned removing step, and the peeling film at the end of the removed adhesive film is removed in the connecting step. It can be obtained by stacking the anti-adhesive tape on the cover film and sticking it with the original double-sided adhesive tape.

  In addition, in the specific example 3, the terminal end side connecting portion of the adhesive tape is shown and described, but the starting end side connecting portion of the adhesive tape may be similarly configured. That is, in the adhesive tape, the end portion of the cover film on the starting end side in the cover film peeling direction is extended on the peeling film of the connecting tape, and the overlapping portion of the cover film and the peeling film is pasted with the double-sided adhesive tape, You may make it stick a 2nd cover side adhesive member over the edge part of a cover film, and a peeling film. This can prevent the occurrence of blocking at the connecting portion of the adhesive tape on the starting end side in the cover film peeling direction.

[Specific Example 4]
FIG. 6 is a cross-sectional view schematically showing the terminal side connecting portion of the adhesive tape of Example 4. The adhesive tape structure shown as the specific example 4 includes the adhesive tape 10 and the connecting tape 30 as in the specific example 1.

  The end portion of the peeling film 33 on the starting end side in the cover film peeling direction of the connecting tape 30 is extended onto the cover film 13 of the adhesive tape 10, so that the cover film 13 of the adhesive tape 10 is peeled integrally. It is composed of. Specifically, the overlapping portion of the release film 32 and the cover film 13 is attached with the double-sided adhesive tape 33b.

  According to the adhesive tape structure shown as the specific example 4, since the end portion of the release film 33 on the start end side in the cover film release direction is extended onto the cover film 13 of the adhesive tape 10, the end portion of the adhesive tape is removed. Even if the edge portion is protruded, the cover film 13 can be strongly peeled off and the occurrence of blocking can be suppressed. Further, it is possible to prevent the release film 32 from floating from the cover film 13 at the overlapping portion of the release film 32 and the cover film 13 when the adhesive tape structure is bent by the roller of the application device. Furthermore, by using the double-sided adhesive tape 33b having high adhesive strength, the first cover-side adhesive member that is attached from the end of the release film 32 to the cover film 13 can be omitted.

  Similar to Example 3, the adhesive tape structure shown as Example 4 has one end of the adhesive film of the original connection tape removed in the removal step described above, and the edge of the adhesive film removed in the connection step. Part of the release film can be obtained by stacking the release film on the cover film of the original fabric adhesive tape and bonding the original fabric double-sided adhesive tape.

  In addition, in the specific example 4, the end side connecting portion of the adhesive tape has been described, but the start end side connecting portion of the adhesive tape may be configured similarly. That is, in the adhesive tape, the end portion of the cover film on the starting end side in the cover film peeling direction is formed to extend on the peeling film of the connecting tape, and the overlapping portion of the cover film and the peeling film is bonded with the double-sided adhesive tape. You may do it. This can prevent the occurrence of blocking at the connecting portion of the adhesive tape on the starting end side in the cover film peeling direction.

[Specific Example 5]
FIG. 7 is a cross-sectional view schematically showing the connecting portion on the starting end side of the adhesive tape of Example 5. The adhesive tape structure shown as the specific example 5 is connected to the adhesive tape 20 in which the base film 21, the adhesive film 22 and the cover film 23 are provided in this order, and the adhesive tape 20, and the cover film 23 of the adhesive tape 20. And a connecting tape 30 configured to be integrally peeled.

  The adhesive tape 20 is formed by completely removing the end portion of the adhesive film 22 on the starting end side in the peeling direction of the cover film from the tip of the cover film 23 by a predetermined length in the peeling direction, and forming the void portion 22a at the end portion of the adhesive film 22. Have. That is, in the adhesive tape 20, the end of the adhesive film 22 on the starting end side in the cover film peeling direction is removed from the tip of the cover film 23 by a predetermined length in the peeling direction. If the removal length of the end portion of the adhesive film 22, that is, the length of the void portion is too short, the effect of suppressing the protrusion cannot be obtained, and if it is too long, the usable amount of the adhesive film 22 decreases, so that it is 1 mm to 10 mm. Preferably.

  According to the adhesive tape structure shown as the specific example 5, the end portion of the adhesive film 22 on the starting end side in the cover film peeling direction is completely removed, so that the connecting portion of the adhesive tape on the starting end side in the cover film peeling direction is removed. It is possible to prevent the adhesive from protruding. Further, it is possible to prevent the adhesive film 22 from being peeled off from the base film 21 when the cover film 23 is peeled off.

  The adhesive tape structure shown as Specific Example 5 is obtained by completely removing one end of one adhesive film in the longitudinal direction of the original fabric adhesive tape from the tip of the cover film by a predetermined length, and removing the adhesive removed in the connecting step described above. It can be obtained by aligning the directions of the edges of the film and connecting the original fabric adhesive tapes with the original fabric connecting tape.

  In addition, in the specific example 5, the starting end side connecting portion of the adhesive tape is shown and described, but the terminal end side connecting portion of the adhesive tape may be similarly configured. That is, in specific examples 1 to 4, the end portion of the adhesive film on the terminal side in the cover film peeling direction may be removed from the tip of the cover film by a predetermined length in the direction opposite to the peeling direction. As a result, it is possible to prevent the adhesive from squeezing out at the connecting portion of the adhesive tape on the terminal side in the cover film peeling direction.

[Specific Example 6]
FIG. 8 is a cross-sectional view schematically showing the starting end side connecting portion of the adhesive tape of Example 6. The adhesive tape structure shown as the specific example 6 includes the adhesive tape 20 and the connecting tape 30 as in the specific example 5.

  The adhesive tape 20 is formed by partially removing an end portion of the adhesive film 22 on the starting end side in the cover film peeling direction, and has a void portion 22b in a part of the end portion of the adhesive film 22. That is, in the adhesive tape 20, after the end portion of the adhesive film 22 on the starting end side in the peeling direction of the cover film has the adhesive portion 22c of the predetermined length in the peeling direction from the tip of the cover film 23, the void portion 22b of the predetermined length is formed. Have. If the length of the void 22b is too short, the effect of suppressing blocking cannot be obtained, and if it is too long, the usable amount of the adhesive film 22 decreases, so that the length is preferably 1 mm to 10 mm.

  According to the adhesive tape structure shown as the specific example 6, since the end portion of the adhesive film 22 on the starting side in the peeling direction of the cover film 23 is partially removed, the connecting portion of the adhesive tape on the starting side in the peeling direction of the cover film. It is possible to suppress the occurrence of the protrusion of the adhesive in. Even if the adhesive portion 22c has a protrusion, since it has the void 22b, only the adhesive 22c is peeled off from the base film 21 when the cover film 23 is peeled off. It is possible to prevent the film 22 from being separated from the base film 21.

  The adhesive tape structure shown as Specific Example 6 is obtained by removing one end of the adhesive film in the longitudinal direction of the original adhesive tape, leaving a predetermined length from the tip, and removing the adhesive film removed in the connecting step described above. It can be obtained by aligning the directions of the ends and connecting the original fabric adhesive tapes with the original fabric connecting tape.

  In addition, in the specific example 6, the starting end side connecting portion of the adhesive tape is shown and described, but the terminal end side connecting portion of the adhesive tape may be similarly configured. That is, in specific examples 1 to 4, after the end portion of the adhesive film on the terminal side in the peeling direction of the cover film has a predetermined length of the adhesive portion in the direction opposite to the peeling direction from the tip of the cover film, a gap of a predetermined length is formed. You may have a part. As a result, it is possible to prevent the adhesive from squeezing out at the connecting portion of the adhesive tape on the terminal side in the cover film peeling direction.

[Specific Example 7]
FIG. 9 is a cross-sectional view schematically showing the starting end side connecting portion of the adhesive tape of Example 7. The adhesive tape structure shown as the specific example 7 includes the adhesive tape 20 and the connecting tape 30 as in the specific example 1.

  The adhesive tape 20 is formed by completely removing the end portion of the adhesive film 22 on the starting end side of the cover film 23 in the peeling direction, and the end portion of the adhesive film 22 is fixed to the base film by the single-sided adhesive tape 22d.

  According to the adhesive tape structure shown as the specific example 7, since the end portion of the adhesive film 22 on the starting side in the peeling direction of the cover film 23 is removed and further fixed to the base film with the single-sided adhesive tape 22d, the cover film peels. It is possible to suppress the protrusion of the adhesive at the connecting portion of the adhesive tape on the starting end side in the direction. Furthermore, it is possible to reliably prevent the adhesive film 22 from being peeled off from the base film 21 when the cover film 23 is peeled off.

  An adhesive tape structure shown as a specific example 7 is one in which one end of the adhesive film in the longitudinal direction of the original adhesive tape is completely removed from the tip of the cover film by a predetermined length, and the end of the adhesive film is a single-sided adhesive tape. It can be obtained by fixing to the base film, aligning the direction of the ends of the removed adhesive film in the above-mentioned connecting step, and connecting the original fabric adhesive tapes with the original fabric connecting tape.

  In addition, in the specific example 7, the starting end side connecting portion of the adhesive tape is shown and described, but the terminal end side connecting portion of the adhesive tape may be similarly configured. That is, in specific examples 1 to 4, the end portion of the adhesive film on the terminal side in the cover film peeling direction may be completely removed, and the end portion of the adhesive film may be fixed to the base film with the single-sided adhesive tape. As a result, it is possible to prevent the adhesive from squeezing out at the connecting portion of the adhesive tape on the terminal side in the cover film peeling direction.

[Specific Example 8]
FIG. 10 is a cross-sectional view schematically showing the connecting portion on the starting end side of the adhesive tape of Example 8. The adhesive tape structure shown as Specific Example 8 is an adhesive tape 20 in which a base film 21, an adhesive film 22, and a cover film 23 are provided in this order, a connecting base material 31, an adhesive film 32, and a release film 33. And the connecting tape 30 that is connected to the adhesive tape 20.

  In addition, the adhesive tape structure includes a second base-side adhesive member 42 that connects an end portion of the base film 21 of the second adhesive tape 20 and an end portion of the connection base material 31 of the connection tape 30, and a second base side adhesive member 42. A second cover-side adhesive member 52b that connects the end of the cover film 23 of the adhesive tape 20 and the end of the release film 33 of the connecting tape 30 is provided.

  The thickness of the second cover-side adhesive member 52b is smaller than the thickness of the second base-side adhesive member 42. The specific thickness of the second cover-side adhesive member 52b is preferably 5 mm to 20 mm.

  According to the adhesive tape structure shown as the specific example 8, since the second cover-side adhesive member 52b is thin, it is possible to reduce the stress received when the adhesive tape structure is bent by the roller of the application device, and thus the cover film. It is possible to suppress the peeling of 23 from the adhesive film 22.

  The adhesive tape structure shown as Example 8 is a raw fabric adhesive tape using the second cover-side adhesive member of the original fabric having a thickness smaller than the thickness of the second base-side adhesive member in the aforementioned connecting step. It can be obtained by connecting the end of the cover film and the end of the release film of the original fabric connecting tape.

  In addition, in the specific example 8, the starting end side connecting portion of the adhesive tape is shown and described, but the terminal end side connecting portion of the adhesive tape may be similarly configured. That is, in the specific examples 1 and 3, it is possible to use one in which the thickness of the first cover-side adhesive member 51 is smaller than the thickness of the first base-side adhesive member 41. As a result, it is possible to reduce the stress applied when the adhesive tape structure is bent by the rollers of the application device, and it is possible to prevent the cover film 13 from peeling off from the adhesive film 12. Further, in the specific example 8, at least a part of the end portion of the adhesive film on the terminal side in the cover film peeling direction may be removed. As a result, it is possible to prevent the adhesive from squeezing out at the connecting portion of the adhesive tape on the terminal side in the cover film peeling direction.

[Specific Example 9]
FIG. 11 is a cross-sectional view schematically showing the connecting portion on the starting end side of the adhesive tape of Example 9. An adhesive tape structure shown as a specific example 9 is an adhesive tape 20 in which a base film 21, an adhesive film 22, and a cover film 23 are provided in this order, a connecting base material 31, an adhesive film 32, and a release film 33. And the connecting tape 30 that is connected to the adhesive tape 10.

  In addition, the adhesive tape structure is provided between the adhesive film 22 and the cover film 23 at the end of the adhesive tape 20 on the start side in the cover film peeling direction, and between the end of the connecting tape 30 on the end side in the cover film peeling direction. A double-sided adhesive tape 61 inserted between the adhesive film 32 and the release film 33 is provided.

  The double-sided adhesive tape 61 connects the end portion of the adhesive film 22 on the start side in the cover film peeling direction and the end portion of the adhesive film 32 on the end side in the cover film peeling direction with the first adhesive surface 61a to peel off the cover film. The end of the cover film 23 on the start side in the direction and the end of the release film 33 on the end in the cover film peeling direction are connected by the second adhesive surface 61b.

  According to the adhesive tape structure shown as the specific example 9, between the adhesive film 22 and the cover film 23 at the end of the adhesive tape 20 on the starting end side in the cover film peeling direction, and the connecting tape on the terminal end side in the cover film peeling direction. Since the double-sided adhesive tape 61 adheres between the adhesive film 32 and the release film 33 at the end portion of the cover film 30, even if stress is applied when the adhesive tape structure is bent by the roller of the application device, the cover film The peeling of 23 from the adhesive film 22 can be suppressed.

  An adhesive tape structure shown as a specific example 9 is formed between the adhesive film at the end portion of the raw adhesive tape and the cover film and between the adhesive film and the release film at the end portion of the original fabric connecting tape in the connecting step described above. It can be obtained by inserting a double-sided adhesive tape between them and connecting them.

[Specific Example 10]
FIG. 12 is a cross-sectional view schematically showing the connecting portion on the starting end side of the adhesive tape of Example 10. The adhesive tape structure shown as the specific example 10 includes the adhesive tape 20 and the connecting tape 30 as in the specific example 9.

  The adhesive tape 20 includes a double-sided adhesive tape 62 that is inserted between the adhesive film 22 and the release film 23 at the end of the cover film in the peeling direction. The double-sided adhesive tape 62 bonds the adhesive film 22 and the cover film 23 at the end on the starting end side in the cover film peeling direction.

  According to the adhesive tape structure shown as the specific example 10, since the adhesive film 22 and the cover film 23 at the end of the adhesive tape 20 on the starting side in the cover film peeling direction are adhered by the double-sided adhesive tape 62. Even if stress is applied when the adhesive tape structure is bent by the roller of the sticking device, it is possible to prevent the cover film 13 from peeling off from the adhesive film 12.

  The adhesive tape structure shown as Specific Example 10 was obtained by inserting the double-sided adhesive tape between the adhesive film and the peeling film at the end of the original fabric connecting tape in the above-mentioned connecting step, and then removing the space between the original fabric adhesive tapes. It can be obtained by connecting with an anti-connecting tape.

[Specific Example 11]
FIG. 13 is a cross-sectional view schematically showing the connecting portion on the starting end side of the adhesive tape of Example 11. An adhesive tape structure shown as a specific example 11 is an adhesive tape 20 in which a base film 21, an adhesive film 22, and a cover film 23 are provided in this order, a connection base material 31, an adhesive film 32, and a release film 33. And the connecting tape 30 that is connected to the adhesive tape 20.

  In addition, the adhesive tape structure includes a second base-side adhesive member 42 that connects an end portion of the base film 21 of the second adhesive tape 20 and an end portion of the connection base material 31 of the connection tape 30, and a second base side adhesive member 42. A second cover-side adhesive member 52c that connects the end of the cover film 23 of the adhesive tape 20 and the end of the release film 33 of the connecting tape 30 is provided. Here, the length of the second cover side adhesive member 52c is larger than the length of the second base side adhesive member 42.

  According to the adhesive tape structure shown as the specific example 11, since the length of the second cover-side adhesive member 52c is larger than the length of the second base-side adhesive member 42, the adhesive tape structure is applied by the roller of the sticking device. It is possible to reduce the stress received when the is bent, and it is possible to prevent the cover film 23 from peeling from the adhesive film 22.

  The adhesive tape structure shown as the specific example 11 is formed by using the second cover-side adhesive member of the original fabric having a length larger than the length of the second base-side adhesive member in the connecting step described above. It can be obtained by connecting the end portion of the cover film of the tape and the end portion of the release film of the original fabric connecting tape.

  In addition, in the specific example 11, the starting end side connecting portion of the adhesive tape is shown and described, but the terminal end side connecting portion of the adhesive tape may be similarly configured. That is, in the specific examples 1 and 3, it is possible to use one in which the thickness of the first cover-side adhesive member 51 is smaller than the thickness of the first base-side adhesive member 41. As a result, it is possible to reduce the stress applied when the adhesive tape structure is bent by the rollers of the application device, and it is possible to prevent the cover film 13 from peeling off from the adhesive film 12. Further, in Specific Example 11, at least a part of the end portion of the adhesive film on the terminal side in the cover film peeling direction may be removed. As a result, it is possible to prevent the adhesive from squeezing out at the connecting portion of the adhesive tape on the terminal side in the cover film peeling direction.

[Specific Example 12]
FIG. 14 is a cross-sectional view schematically showing the connecting portion on the starting end side of the adhesive tape of Example 12. The adhesive tape structure shown as the specific example 12 is an adhesive tape 20 in which a base film 21, an adhesive film 22, and a cover film 23 are provided in this order, a connecting base material 31, an adhesive film 32, and a release film 33. And the connecting tape 30 that is connected to the adhesive tape 20.

  In addition, the adhesive tape structure is provided between the adhesive film 22 and the cover film 23 at the end of the adhesive tape 20 on the start side in the cover film peeling direction, and between the end of the connecting tape 30 on the end side in the cover film peeling direction. A single-sided adhesive tape 63 inserted between the adhesive film 32 and the release film 33 is provided.

  The one-sided adhesive tape 63 connects the end of the adhesive film 22 on the start side in the cover film peeling direction and the end of the adhesive film 32 on the end side in the cover film peeling direction with the adhesive surface 63a. Further, it is preferable that the opposite surface of the adhesive surface 63a is subjected to a peeling treatment.

  According to the adhesive tape structure shown as the specific example 12, the peeling between the one-sided adhesive tape 63 and the cover film 23 becomes easy, so that the adhesive film is formed at the end of the adhesive tape 20 on the starting end side in the cover film peeling direction. It is possible to prevent the blocking of the adhesive 22 due to the protrusion of the adhesive.

  The adhesive tape structure shown as a specific example 12 is formed between the adhesive film and the cover film at the end portion of the original fabric adhesive tape and between the adhesive film and the release film at the end portion of the original fabric connection tape in the connecting step described above. It can be obtained by inserting and connecting a single-sided adhesive tape between them.

[Specific Example 13]
FIG. 15 is a cross-sectional view schematically showing the connecting portion on the starting end side of the adhesive tape of Example 13. The adhesive tape structure shown as the specific example 12 includes the adhesive tape 20 and the connecting tape 30 as in the specific example 12.

  In addition, the adhesive tape structure is provided between the adhesive film 22 and the cover film 23 at the end of the adhesive tape 20 on the start side in the cover film peeling direction, and between the end of the connecting tape 30 on the end side in the cover film peeling direction. A single-sided adhesive tape 64 inserted between the adhesive film 32 and the release film 33 is provided.

  The one-sided adhesive tape 64 connects the end portion of the cover film 23 on the starting end side in the cover film peeling direction and the end portion of the peeling film 33 on the terminal end side in the cover film peeling direction with the adhesive surface 64a. Further, it is preferable that the opposite surface of the adhesive surface 64a is subjected to a peeling treatment.

  According to the adhesive tape structure shown as the specific example 13, since the peeling between the one-sided adhesive tape 64 and the adhesive film 22 becomes easy, the adhesive film is formed at the end of the adhesive tape 20 on the terminal side in the cover film peeling direction. It is possible to prevent the blocking of the adhesive 22 due to the protrusion of the adhesive.

  An adhesive tape structure shown as a specific example 13 is formed between the adhesive film at the end portion of the original fabric adhesive tape and the cover film and between the adhesive film and the release film at the end portion of the original fabric adhesive tape in the connecting step described above. It can be obtained by inserting and connecting a single-sided adhesive tape between them.

[Specific Example 14]
FIG. 16 is a cross-sectional view schematically showing the connecting portion on the starting end side of the adhesive tape of Example 14. The adhesive tape structure shown as the specific example 14 includes the adhesive tape 20 and the connecting tape 30 as in the specific example 12.

  In addition, the adhesive tape structure is formed between the adhesive film 22 and the cover film 23 at the end of the adhesive tape 20 on the start side in the cover film peeling direction, and between the end of the connecting tape 30 on the end side in the cover film peeling direction. A double-sided peeling tape 65 that is inserted between the adhesive film 32 and the peeling film 33 and is subjected to double-sided peeling processing is provided.

  According to the adhesive tape structure shown as the specific example 14, peeling between the double-sided peeling tape 65 and the adhesive film 22 and between the double-sided peeling tape 65 and the cover film 23 is facilitated. At the end portion of the adhesive tape 20 on the terminal end side, it is possible to suppress blocking due to the adhesive protruding from the adhesive film 22.

  The adhesive tape structure shown as Specific Example 14 has a structure in which the adhesive film at the end of the raw fabric adhesive tape and the cover film, and the adhesive film and the release film at the end of the raw fabric connecting tape are used in the joining process. It can be obtained by inserting a double-sided peeling tape between them and connecting them.

DESCRIPTION OF SYMBOLS 1 Adhesive tape, 2 reel, 3 unwinding shaft, 4a-4e roller, 5 peeling roller, 6 cutter part, 7 sticking part, 8 stage, 10 1st adhesive tape, 11 base film, 12 adhesive film, 13 cover film , 20 second adhesive tape, 21, base film, 22 adhesive film, 22a void, 22b void, 22c adhesive, 22d single-sided adhesive tape, 23 cover film, 30 connecting tape, 31 connecting base material, 32 adhesive film , 33 release film, 33a double-sided adhesive tape, 41 first base side adhesive member, 42 second base side adhesive member, 51 first cover side adhesive member, 52, 52a, 52b second cover side adhesive member, 61 double-sided adhesive tape, 62 double-sided adhesive tape, 63 single-sided adhesive tape, 64 single-sided adhesive tape, 65 double-sided peeling tape

Claims (5)

A plurality of adhesive tapes provided with an adhesive film and a cover film,
An adhesive film and a release film are provided, and a connecting tape for connecting the adhesive tapes is provided,
The connection tape is formed by extending an end portion of the release film on the starting side in the cover film release direction on the cover film of the adhesive tape, so that the cover films of the plurality of adhesive tapes are integrally released. Ri name is configured,
An adhesive tape structure in which the edge of the cover film and the edge of the adhesive film are aligned .   The adhesive tape structure according to claim 1, further comprising a cover-side adhesive member attached from the end of the release film to the cover film.   The adhesive tape structure according to claim 1 or 2, further comprising a double-sided tape that bonds the overlapping portion of the release film and the cover film together. A cover-side adhesive member attached from the end of the release film over the cover film,
The adhesive tape structure according to claim 1, wherein an end portion of the cover-side adhesive member on the terminal side in the cover film peeling direction is on a portion where the peeling film and the cover film overlap each other. Adhesive film, a peeling film and a removal step of removing one end of the adhesive film of the original fabric connecting tape provided in this order,
The peeling film of the removed adhesive film portion , an adhesive film, and a cover film are provided, on the cover film of the raw adhesive tape where the end portion of the cover film and the end portion of the adhesive film are aligned. A connecting step in which the cover films of a plurality of original fabric adhesive tapes are overlapped and connected to each other and are integrally peeled off,
A cutting step of cutting the connected original fabric adhesive tape and original fabric connecting tape to a predetermined width,
A winding step of winding the cut adhesive tape and the connecting tape on a reel so that the end of the partially removed adhesive film is the starting end side in the cover film peeling direction. Production method.

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