TW201919872A - Adhesive tape, reel of adhesive tape, and production method for adhesive tape - Google Patents

Abstract

An adhesive tape 11 comprising a separator 12 and an adhesive layer 13 disposed on one surface 12a thereof, the adhesive tape 11 including a leading portion L, in which a pick-up tape 21 ending at the same position as the leading portion L and having a thickness of 10-30 [mu]m has been disposed so that at least the end of the adhesive layer 13 is not exposed.

Description

Adhesive tape, adhesive tape winding reel, and method for producing adhesive tape

The present invention relates to a method for manufacturing an adhesive tape, an adhesive tape winding reel, and an adhesive tape.

Conventionally, an adhesive tape is used to connect connected members having a plurality of electrodes. Examples of such an adhesive tape include an anisotropic conductive tape. If an anisotropic conductive tape is used, for example, a semiconductor element such as an integrated circuit (IC) or a large scale integration (LSI) is connected to a printed wiring board or a liquid crystal display (Liquid Crystal Display). , LCD) When using a substrate such as a glass substrate or a flexible printed substrate, the opposite electrodes can be conducted and the insulation state between adjacent electrodes can be maintained.

The adhesive tape is formed, for example, on a substrate such as polyethylene terephthalate (PET) by forming an adhesive layer including an adhesive component containing a thermosetting resin and conductive particles prepared as necessary. to make. Next, the tape is produced by cutting a sheet-like raw material into strips with a width suitable for the application, and storing / transporting / using it in a state of being wound around a reel wound body (for example, See Patent Document 1). [Prior Art Literature] [Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open No. 2003-34468

[Problems to be Solved by the Invention]

Previously, a lead tape protruding from an end of the adhesive tape was attached to a lead-out portion (pulled-out portion) of the adhesive tape wound around the reel, and the lead tape was attached to the reel, thereby achieving the fixed. However, in recent years, the demand for a narrower width adhesive tape is increasing. Therefore, the thickness of the lead tape is relatively larger than the width of the adhesive tape, and it is difficult to cut the lead tape portion of the adhesive tape in a state where the lead tape is attached. The current situation is that after the lead tape attached to the lead tape portion is temporarily peeled off and subjected to cutting processing, the lead tape is attached to each of the adhesive tapes having a narrow width. Therefore, there is a problem that the manufacturing steps of the adhesive tape become complicated.

This invention is made in order to solve the said subject, and an object is to provide the manufacturing method of the narrow-width adhesive tape which can simplify a manufacturing process, an adhesive tape winding reel, and an adhesive tape. [Means for solving problems]

According to an aspect of the present invention, a first adhesive layer is provided on a side surface of a first separator, and a first adhesive layer is not exposed at least on a front end side of the adhesive tape at a leading portion of the adhesive tape. In the method, a pickup tape having a thickness of 10 μm or more and 30 μm or less is terminated at the same position as the lead-in part.

In this adhesive tape, a pick-up tape having a thickness of 10 μm or more and 30 μm or less is provided on the lead-in portion. By setting the thickness of the pickup tape to the range, the thickness of the pickup tape relative to the width of the adhesive tape can be relatively reduced. Therefore, the adhesive tape can be cut to a narrow width by a cutting process while the pickup tape is attached, thereby simplifying the manufacturing steps. In addition, since the first adhesive layer is not exposed at the front end side of the lead-in portion, even when the lead-in portion is fixed to a roll or the like, it is possible to prevent the lead-in portion from being removed from the roll or the like during use. The 1-adhesive layer is peeled from the first release member.

In addition, the pick-up tape may have a second adhesive layer on one side of the second release member, and may be fixed to the tape guide portion so that the second adhesive layer faces the first adhesive layer on the adhesive tape side. This makes it possible to firmly fix the pickup tape to the adhesive tape.

In addition, the pick-up tape may have a third adhesive layer on the other surface side of the second release member, and an exposed area where the second release member is exposed from the third adhesive layer may be provided on the termination side of the lead-in portion. At this time, the lead-in portion can be fixed to the reel or the like by a third adhesive layer without using another seal. Furthermore, since the exposed area is provided on the termination side of the lead-in portion, the lead-in portion can be easily removed from the reel or the like during use.

In addition, the pick-up tape may have a fourth adhesive layer on the other side of the second release member, and may be fixed to the lead-out portion by attaching the second release member to the first adhesive layer on the adhesive tape side. An exposed area where the second release member is exposed from the fourth adhesive layer is provided on the termination side of the lead-in portion. In this case, the lead-in portion may be fixed to the roll or the like by a fourth adhesive layer without using another seal. Moreover, since the exposed area is provided on the termination side of the tape guide portion, the tape guide portion can be easily removed from the reel or the like when the tape is used. Furthermore, since the adhesive layer is provided on one surface side of the second release member, the entire thickness of the lead tape portion including the pickup tape can be suppressed. Therefore, the cutting process can be performed more reliably in a state where the pickup tape is attached.

Furthermore, the pick-up tape may include only the second release member, and may be fixed to the lead-out portion by attaching the second release member to the first adhesive layer on the adhesive tape side. In this case, it is possible to further suppress the entire thickness of the lead tape portion including the pickup tape. Therefore, the cutting process can be performed more reliably in a state where the pickup tape is attached.

Furthermore, the adhesive layer on the pickup belt side may be colored with a different color from the first adhesive layer. Thereby, the visibility and recognizability of a pickup belt can be improved. Therefore, workability, such as a case where the lead-in part is cut when using the adhesive tape, can be improved.

The width of the adhesive tape orthogonal to the longitudinal direction may be 0.8 mm or less. When the width of the adhesive tape is 0.8 mm or less, it is difficult to cut the lead portion of the adhesive tape with the conventional lead tape attached. Therefore, when the width of the adhesive tape is 0.8 mm or less, the application of the pickup tape is particularly useful.

Further, the adhesive tape winding reel according to an aspect of the present invention includes: a winding core on which the adhesive tape is wound; and a pair of side plates, which face each other with the winding core in between, and lead the adhesive tape from the winding core. The part is fixed to the outer surface side of the side plate.

In this adhesive tape winding reel, a pickup tape having a thickness of 10 μm or more and 30 μm or less is provided on the lead-in part of the adhesive tape. By setting the thickness of the pickup tape to the range, the thickness of the pickup tape relative to the width of the adhesive tape can be relatively reduced. Therefore, the adhesive tape can be cut to a narrow width by a cutting process while the pickup tape is attached, thereby simplifying the manufacturing steps. In addition, since the first adhesive layer is not exposed on the front end side of the lead-in portion, it is possible to prevent the first adhesive layer from peeling off from the first release member when the lead-in portion is removed from the roll during use.

Furthermore, the method for producing an adhesive tape according to one aspect of the present invention is a method for producing an adhesive tape in which a first adhesive layer is provided on one side of a first release member, and the method includes extracting the adhesive tape from a raw material so that the first The next layer is no longer exposed, and a pick-up tape with a thickness equal to or greater than the width of the raw material, with a thickness of 10 μm or more and 30 μm or less, is attached to the first adhesive layer at regular intervals; The adhesive tape is cut into a plurality of adhesive tapes by a cutting process along the longitudinal direction; and the plurality of adhesive tapes are cut in the width direction together with the pickup tape to terminate the lead-in tape portion, and then the multiple adhesive tapes are rolled to reel.

In this adhesive tape manufacturing method, a pickup tape having a thickness of 10 μm or more and 30 μm or less is applied to the lead-in portion. By setting the thickness of the pickup tape to the range, the thickness of the pickup tape relative to the width of the adhesive tape can be relatively reduced. Therefore, the adhesive tape can be cut to a narrow width by a cutting process while the pickup tape is attached, thereby simplifying the manufacturing steps. In addition, in the produced adhesive tape, the first adhesive layer is not exposed on the front end side of the lead-in portion, so even when the lead-in portion is fixed to a roll or the like, the lead-in portion can be prevented from being used during use. When removed from a roll or the like, the first adhesive layer is peeled from the first release member. [Effect of the invention]

According to the present invention, the manufacturing steps of a narrow-width adhesive tape can be simplified.

Hereinafter, referring to the drawings, preferred embodiments of the method for manufacturing the adhesive tape, the adhesive tape winding roll, and the adhesive tape according to one aspect of the present invention will be described in detail.

FIG. 1 is a side view showing an embodiment of a continuous tape winding reel. As shown in the figure, the adhesive tape winding reel 1 includes a core 2 for winding the adhesive tape 11 and a pair of side plates 3 and 3 facing each other with the core 2 interposed therebetween. The next tape winding reel 1 is a reel used for manufacturing, supplying, and storing the next tape 11 and has a function of preventing the roll of the second tape 11 wound around the core 2 from collapsing by a pair of side plates 3 and 3.

The core 2 is a portion wound around the tape 11. The core 2 includes, for example, plastic, and has a ring shape having the same thickness as the width of the adhesive tape 11. In this embodiment, the adhesive tape 11 is wound on the core 2 such that the adhesive layer 13 (see FIG. 2) of the adhesive tape 11 faces inward (the core 2 side). To the hollow portion 2 a of the core 2, for example, a winding shaft for winding the tape 11 onto the tape winding roll 1 or a rotary shaft for withdrawing the tape 11 from the tape winding roll 1 can be installed. Shaft hole (not shown). Since the rotating shaft is driven while the rotating shaft of the winding device or the extraction device is inserted into the shaft hole, the tape winding reel 1 is then rotated without idling.

The side plate 3 includes, for example, the same plastic as the core 2 and has a circular plate shape. The thickness of the side plate 3 is, for example, 0.5 mm to 5.0 mm, preferably 0.9 mm to 3.0 mm, and more preferably 1.0 mm to 2.0 mm. The diameter of the side plate 3 is appropriately set so as to be a sufficiently large diameter with respect to the diameter of the core 2 according to the length of the adhesive tape T wound around the core 2. The central portion of the side plate 3 is provided with a circular opening that communicates with the hollow portion 2 a of the winding core 2 so as to enable the arrangement of the shaft hole.

A plurality of ribs 4 are provided on the inner surface of the side plate 3 and extend radially from the center side toward the peripheral edge side of the tape winding roll 1. In the example of FIG. 1, 16 linear ribs 4 are provided at a phase angle of 22.5 °. The rib 4 has, for example, an arc-shaped cross-sectional shape, and protrudes from the inner surface of the side plate 3 in a range of, for example, about 0.05 mm to 1.00 mm. The arrangement of such ribs 4 has the effects of suppressing the roll collapse of the adhesive tape 11 wound around the core 2 and the adhesive layer 13 of the adhesive tape 11 caused by the collision with the side plate 3 (see FIG. 2). Inhibition of spalling (blocking phenomenon).

Next, the adhesive tape 11 will be described in detail.

FIG. 2 is a schematic cross-sectional view showing an embodiment of the adhesive tape. As shown in the figure, the adhesive tape 11 has a double-layered structure including a release member (first release member) 12 and an adhesive layer (first adhesive layer) 13 formed on one surface 12 a side of the release member 12. In this embodiment, the adhesive tape 11 is exemplified by an anisotropic conductive tape for connection between the members to be connected. The anisotropic conductive tape is, for example, an adhesive tape used when connecting semiconductor elements such as ICs and LSIs to various substrates such as printed wiring boards, glass substrates for LCDs, and flexible printed boards. The anisotropic conductive tape can conduct conduction between the opposite electrodes and maintain the insulation state between adjacent electrodes.

The length of the subsequent belt 11 is, for example, 10 m or more and 1000 m or less. In this embodiment, it is 300 m, for example. The subsequent tape 11 is wound and stored in the state of a wound body by winding the reel 1 with the aforementioned adhesive tape. The width of the adhesive tape 11 is, for example, 0.8 mm or less, and preferably 0.6 mm or less. The thickness of the adhesive tape 11 (total thickness of the release member 12 and the adhesive layer 13) is, for example, 5 μm or more and 100 μm or less, preferably 10 μm or more and 40 μm or less, and more preferably 10 μm or more and 20 μm or less.

As the material of the release member 12, from the viewpoint of the strength of the adhesive tape 11 and the peelability of the adhesive layer 13, for example, oriented polypropylene (OPP), polyethylene terephthalate (Polyethylene terephthalate) can be used. , PET), polyethylene naphthalate, polyethylene isophthalate, polybutylene terephthalate, polyolefin, polyacetate, polycarbonate, polyphenylene sulfide, polyamide , Ethylene-vinyl acetate copolymer, polyvinyl chloride, polyvinylidene chloride, synthetic rubber, liquid crystal polymer, etc.

A mold release process may be performed on the other surface 12b side of the release member 12. Examples of the release agent for release treatment include low-melting-point waxes such as olefin-based release agents, ethylene glycol montanic acid ester, carnauba wax, and petroleum-based waxes, and low molecular weight. Silicone resins such as fluororesins, silicone-based or fluorine-based surfactants, oils, waxes, resins, polyester modified silicone resins, etc. Generally, a silicone resin is used.

As the material of the adhesive layer 13, for example, an adhesive containing a resin such as a thermoplastic resin, a thermosetting resin, or a mixed system (mixed resin) of a thermoplastic resin and a thermosetting resin can be used. Typical examples of the thermoplastic resin include a styrene resin system and a polyester resin system. Examples of typical thermosetting resins include epoxy resins, acrylic resins, and silicone resins.

When the adhesive tape 11 is an anisotropic conductive tape, the adhesive tape 13 includes an adhesive agent component and conductive particles contained as necessary. As the adhesive component, for example, a crosslinkable material is preferably used from the viewpoint that a material exhibiting hardenability by heat or light can be widely used and excellent in heat resistance or moisture resistance after joining. An epoxy-based adhesive containing an epoxy resin as a thermosetting resin as a main component can be cured in a short period of time, has good connection workability, and has good molecular structure adhesiveness. As the epoxy-based adhesive, for example, a high-molecular-weight epoxy, solid epoxy, or liquid epoxy can be used, or a urethane, polyester, acrylic rubber, or nitrile rubber ( Nitrile Rubber (NBR), synthetic linear polyamide and other modified epoxy. The epoxy-based adhesive is usually one obtained by adding a hardener, a catalyst, a coupling agent, a filler, and the like to the epoxy constituting the main component.

Examples of the conductive particles include gold (Au), silver (Ag), platinum (Pt), nickel (Ni), copper (Cu), tungsten (W), antimony (Sb), tin (Sn), solder, and the like. Metal or carbon particles. In addition, it is also possible to use a coating particle formed by using non-conductive glass, ceramic, plastic, or the like as a core and coating the core with the metal or carbon. From the viewpoint of dispersibility and conductivity, the average particle diameter of the conductive particles is preferably 1 μm or more and 18 μm or less, for example. Moreover, you may use the insulating coating particle which coated the conductive particle with the insulating layer, and you may use a conductive particle and an insulating particle together from a viewpoint of improving the insulation between adjacent electrodes.

A pickup belt 21 is provided on the lead-out portion L (the lead-out portion of the self-adhesive tape winding roll 1) of the adhesive tape 11. As shown in FIG. 1, the pickup belt 21 is drawn out from the side plate 3 and the side plate 3 in a state where the adhesive tape 11 is wound around the adhesive tape winding roll 1 and is fixed to the outer surface of one of the side plates 3 by a seal S. . When the adhesive tape 11 is used, after the seal S is peeled off, the adhesive tape 11 can be pulled out from the adhesive tape winding roll 1 by holding the pickup tape 21. The seal S is not particularly limited, and a general seal can be used. When the adhesive tape 11 is used, the lead tape portion L may be cut together with the pickup tape 21.

As shown in FIG. 2, the pickup belt 21 has a two-layer structure including a release member (second release member) 22 and an adhesive layer (second adhesive layer) 23 formed on one surface 22 a side of the release member 12. The pickup tape 21 is affixed to the tape guide portion L so that the adhesive layer 23 and the adhesive layer 13 on the adhesive tape 11 side face each other. Further, the end position F2 of the pickup tape 21 coincides with the end position F1 of the lead-out portion L following the tape 11. Thereby, in the lead-in portion L of the adhesive tape 11, the adhesive layer 13 is held by the release member 12 and the pickup tape 21, and the adhesive layer 13 is not exposed to the outside.

The length of the pickup belt 21 is a length corresponding to the lead-in portion L of the adhering belt 11, and is, for example, 30 mm or more and 300 mm or less. The width of the pickup belt 21 is, for example, 0.8 mm or less, preferably 0.6 mm or less, and is equal to the width of the adhesive tape 11. The thickness of the pickup belt 21 (total thickness of the release member 12 and the adhesive layer 13) is, for example, 10 μm or more and 30 μm or less, and preferably 10 μm or more and 20 μm or less. When the thickness of the pickup tape 21 is less than 10 μm, it is considered that when the pickup tape 21 is attached to the adhesive tape 11, the pickup tape 21 curls, and air bubbles are generated between the adhesive layer 13 and the adhesive layer 23. Further, when the thickness of the pickup belt 21 exceeds 30 μm, it is difficult to cut the pickup belt 21 to the same width as the adhesive tape 11. Therefore, if it is the said thickness range, the generation | occurrence | production of a bubble can be suppressed and cutting | disconnection of the pick-up tape 21 can be performed easily.

As the material of the release member 22, similar to the release member 12 to which the tape 11 is attached, for example, stretched polypropylene (OPP), polyethylene terephthalate (PET), polyethylene naphthalate, Polyethylene isophthalate, polybutylene terephthalate, polyolefin, polyacetate, polycarbonate, polyphenylene sulfide, polyamide, ethylene-vinyl acetate copolymer, polyvinyl chloride , Polyvinylidene chloride, synthetic rubber, liquid crystal polymer, etc.

As the material of the adhesive layer 23, for example, a silicone-based adhesive or an acrylic-based adhesive can be used. In consideration of the specifications of the customer's final product, it is required that silicone-free (including auxiliary materials other than the adhesive layer 13) is not included, so it is preferable to use an acrylic adhesive as the material of the adhesive layer 23. From the viewpoint of improving the visibility and visibility of the pickup tape 21, it is preferable that the adhesive layer 23 be colored with a different color from the adhesive layer 13 on the adhesive tape 11 side. The color of the adhesive layer 13 and the adhesive layer 23 is not particularly limited. For example, the color of the adhesive layer 13 on the adhesive tape 11 side can be colorless and transparent, and the color of the adhesive layer 23 on the pickup tape 21 side can be blue. When white PET is used for the release member 12, the color of the release member 22 and the adhesive layer 23 of the pickup belt 21 may be made black in terms of contrast.

Next, a method for manufacturing the adhesive tape 11 will be described.

FIG. 3 is a schematic diagram showing an embodiment of a method for producing a bonding tape. As shown in the figure, a manufacturing apparatus 101 is used for manufacturing the subsequent tape 11. The manufacturing apparatus 101 includes a pull-out device 102 around which the raw material P of the adhesive tape 11 is wound, a winding device 103 to which a plurality of adhesive tape winding reels 1 are rotatably mounted, and a processing device 104 that performs cutting of the adhesive tape 11 machining.

The self-extracting device 102 extracts the raw material P at a constant speed and then takes the belt 11. For the adhesive tape 11 extracted from the extraction device 102, a large-sized pickup tape 21 having a thickness equal to or greater than the width of the raw material P and having a thickness of 10 μm or more and 30 μm or less is attached at regular intervals. At this time, the adhesive layer 23 of the pickup tape 21 and the adhesive layer 13 of the adhesive tape 11 are opposed to each other. Thereby, at the portion where the pickup tape 21 is attached, the adhesive layer 13 of the adhesive tape 11 is not exposed to the outside.

After the pickup tape 21 is attached, the subsequent tape 11 is sent to the processing device 104. Then, the adhesive tape 11 to which the pickup tape 21 is attached is cut in the longitudinal direction, and cut into a plurality of adhesive tapes 11 having a width of 0.8 mm or less. After cutting the adhesive tape 11, the plurality of adhesive tapes 11 are cut in the width direction together with the pickup tape 21 to terminate the lead-in portion L (A-A line in FIG. 3). Thereby, the end position F1 of the lead-in tape part L following the tape 11 and the end position F2 of the pick-up tape 21 are made into a state.

After terminating the lead-in portion L, the plurality of adhesive tapes 11 to which the pickup tape 21 is attached are wound by the winding device 103 to the core 2 of the adhesive tape winding drum 1, respectively. Then, the tape guide portion L is drawn out between the side plate 3 and the side plate 3 of the adhesive tape winding reel 1 and is fixed to the outer surface of one of the side plates 3 by a seal S. Thereby, the adhesive tape 11 wound to the adhesive tape winding reel 1 as shown in FIG. 1 is obtained.

As described above, in the adhesive tape 11, a pickup tape 21 having a thickness of 10 μm or more and 30 μm or less is provided on the lead-in portion L. By setting the thickness of the pickup belt 21 to the above range, the thickness of the pickup belt 21 with respect to the width of the adhesive tape 11 can be relatively reduced. Therefore, the adhesive tape 11 can be cut to a narrow width by a cutting process in a state where the pickup tape 21 is attached, thereby simplifying the manufacturing steps. In addition, since the adhesive layer 13 is not exposed on the front end side of the lead-in portion L, even when the lead-in portion L is fixed to the take-up reel 1, the lead-in portion L can be prevented from being self-adhered during use When the tape winding roll 1 is removed, the adhesive layer 13 is peeled from the release member 12.

Further, in the present embodiment, the pickup tape 21 has an adhesive layer 23 on one side 22 a side of the release member 22, and is fixed to the lead-in portion L so that the adhesive layer 23 faces the adhesive layer 13 on the adhesive tape 11 side. Thereby, the pickup belt 21 can be firmly fixed to the adhesive tape 11.

Further, in the present embodiment, the adhesive layer 23 on the pickup belt 21 side is colored with a different color from the adhesive layer 13 on the adhesive belt 11 side. Thereby, the visibility and recognizability of the pickup belt 21 can be improved. Therefore, workability, such as a case where the lead-out portion L is cut when the adhesive tape 11 is used, can be improved.

In the present embodiment, the width of the adhesive tape 11 orthogonal to the longitudinal direction is 0.8 mm or less. For example, in the processing device 104 that cuts the adhesive tape 11, the upper blade and the lower blade are overlapped (lap) to cut the adhesive tape 11. However, if the cutting width is narrowed, the gap between the upper blade and the lower blade is reduced. The clearance is also narrowed. Therefore, if the thickness of the cutting target is relatively larger than the width, it is difficult to pass the knife through the cutting target. In this regard, for example, it is possible to cope with a certain degree by reducing the thickness of the upper blade. However, in terms of the abrasiveness of the blade, the thickness of the upper blade is also limited. According to the above, when the width of the adhesive tape is 0.8 mm or less, it is difficult to cut the lead tape portion of the adhesive tape with the conventional lead tape attached. Therefore, when the width of the adhesive tape 11 is 0.8 mm or less as in the present embodiment, it is particularly useful to apply the pickup tape 21 having a thickness of 10 μm or more and 30 μm or less to the lead-in portion L.

The belt can then be used in various deformations. FIG. 4 is a schematic cross-sectional view showing a modification of the adhesive tape. In the adhesive tape 31 shown in the figure, the configuration of the pickup tape 41 provided in the lead-in portion L is different from that of the above-described embodiment. Specifically, the pickup belt 41 includes a release member (second release member) 22, an adhesive layer (second adhesive layer) 23 formed on one surface 22 a side of the release member 22, and a pickup layer 41 formed on the release member 22. A three-layer structure including a bonding layer (third bonding layer) 43 on the other surface 22b side. The thickness of the pickup belt 41 (total thickness of the release member 22, the adhesive layer 23, and the adhesive layer 43) is, for example, 10 μm or more and 30 μm or less, and preferably 10 μm or more and 20 μm or less.

The adhesion layer 43 includes, for example, the same material as the adhesion layer 23. The adhesive layer 43 may be colored differently from the adhesive layer 13 on the adhesive tape 31 side similarly to the adhesive layer 23. In the adhesive tape 31, the ending position F2 of the pickup tape 41 is consistent with the ending position F1 of the lead-out portion L of the adhesive tape 31, but the other side 22b of the release member 22 is provided on the terminating side of the lead-in portion L. 13 Exposed exposed area R. The length of the exposed region R from the end position F2 is, for example, 5 mm or more and less than 30 mm.

Even if it is convenient for such an adhesive tape 31, the adhesive tape 31 can be cut to a narrow width by cutting in a state where the pickup tape 41 is attached, thereby simplifying the manufacturing steps. In addition, since the adhesive layer 13 is not exposed on the front end side of the lead-in portion L, even when the lead-in portion L is fixed to the take-up reel 1, the lead-in portion L can be prevented from being self-adhered during use. When the tape winding roll 1 is removed, the adhesive layer 13 is peeled from the release member 12.

Further, in the adhesive tape 31, the tape lead portion L can be fixed to the adhesive tape winding roll 1 by the adhesive layer 43 without using a seal S (see FIG. 1). In addition, since the exposed area R is provided on the termination side of the tape lead portion L, the exposed area R becomes a grip portion when the tape lead portion L is peeled off from the self-adhesive tape winding roll 1, so that the tape lead portion can be easily used during use. L is removed from the adhesive tape winding reel 1.

FIG. 5 is a schematic cross-sectional view showing another modified example of the adhesive tape. In the adhesive tape 51 shown in the figure, the configuration of the pickup tape 61 provided in the lead-in portion L is further different from that of the embodiment described above. Specifically, the pickup belt 61 has a two-layer structure including a release member (second release member) 22 and an adhesive layer (fourth adhesive layer) 63 formed on the other surface 22 b side of the release member 22. The pickup belt 61 is fixed to the adhesive tape 51 by directly attaching the one surface 22a side of the release member 22 to the adhesive layer 13 on the adhesive tape 51 side. The thickness of the pickup belt 61 (total thickness of the release member 22 and the adhesive layer 63) is, for example, 10 μm or more and 30 μm or less, and preferably 10 μm or more and 20 μm or less.

The adhesion layer 63 has, for example, the same structure as the adhesion layer 23. That is, the adhesive layer 63 includes the same material as the adhesive layer 23. The adhesive layer 63 is colored differently from the adhesive layer 13 on the adhesive tape 51 side. The end position F2 of the pick-up tape 61 is the same as the end position F1 of the lead-out portion L following the tape 51, but the other side 22b of the release member 22 on the termination side of the lead-out portion L is provided with an exposed area R exposed from the adhesive layer 63 . The length of the exposed region R from the end position F2 is, for example, 5 mm or more and less than 30 mm.

Even if it is convenient for such an adhesive tape 51, the adhesive tape 51 can be cut to a narrow width by cutting in a state where the pickup tape 61 is attached, thereby simplifying the manufacturing steps. In addition, since the adhesive layer 13 is not exposed on the front end side of the lead-in portion L, even when the lead-in portion L is fixed to the take-up reel 1, the lead-in portion L can be prevented from being self-adhered during use. When the tape winding roll 1 is removed, the adhesive layer 13 is peeled from the release member 12.

Further, in the adhesive tape 51, the tape guide portion L can be fixed to the adhesive tape winding roll 1 by the adhesive layer 63 without using a seal S (see FIG. 1). In addition, since the exposed area R is provided on the termination side of the tape lead portion L, the exposed area R becomes a grip portion when the tape lead portion L is peeled off from the self-adhesive tape winding roll 1, so that the tape lead portion can be easily used during use L is removed from the adhesive tape winding reel 1. Furthermore, in the adhesive tape 51, an adhesive layer is not provided on one side 22a side of the release member 22 of the pickup tape 61, so that the entire thickness of the lead tape portion L including the pickup tape 61 can be suppressed. Therefore, the dicing process in a state where the pickup belt 61 is attached can be performed more reliably.

FIG. 6 is a schematic cross-sectional view showing another modified example of the adhesive tape. In the adhesive tape 71 shown in the figure, the configuration of the pickup tape 81 provided in the lead-in portion L is further different from that of the embodiment described above. Specifically, the pickup belt 81 has a single-layer structure including only the release member (second release member) 22. The pickup tape 81 is fixed to the adhesive tape 71 by directly attaching the one surface 22 a side of the release member 22 to the adhesive layer 13 on the adhesive tape 71 side. In the case where the lead-out portion L of the adhesive tape 71 is fixed to the adhesive tape winding roll 1, the seal S may be used in the same manner as in FIG. 1. The thickness of the pickup belt 81 (thickness of the release member 22) is, for example, 10 μm or more and 30 μm or less, and preferably 10 μm or more and 20 μm or less.

Even if it is convenient for such an adhesive tape 71, the adhesive tape 71 can be cut to a narrow width by cutting in a state where the pickup tape 81 is attached, thereby simplifying the manufacturing steps. In addition, since the adhesive layer 13 is not exposed on the front end side of the lead-in portion L, even when the lead-in portion L is fixed to the take-up reel 1, the lead-in portion L can be prevented from being self-adhered during use When the tape winding roll 1 is removed, the adhesive layer 13 is peeled from the release member 12. Further, in the adhesive tape 71, the pickup tape 81 has a single-layer structure including only the release member 22, so that the entire thickness of the lead tape portion L including the pickup tape 81 can be further suppressed. Therefore, the dicing process in a state where the pickup belt 81 is attached can be performed more reliably.

1‧‧‧ followed by a winding reel

2‧‧‧ core

2a‧‧‧Hollow

3‧‧‧Side

4‧‧‧ rib

11, 31, 51, 71‧‧‧ followed by

12‧‧‧ Release (the first release)

12a, 22a ‧‧‧ side

12b, 22b‧‧‧ the other side

13‧‧‧ Adjacent Layer (1 Adjacent Layer)

21, 41, 61, 81‧‧‧ pickup belt

22‧‧‧ Release (the second release)

23‧‧‧ Adjacent Layer (2nd Adjacent Layer)

43‧‧‧ Adjacent Layer (3rd Adjacent Layer)

63‧‧‧ Adjacent Layer (4th Adjacent Layer)

101‧‧‧ manufacturing equipment

102‧‧‧ Extraction device

103‧‧‧ Winding device

104‧‧‧Processing equipment

F1, F2‧‧‧End position

L‧‧‧ Leading section

P‧‧‧Raw materials

R‧‧‧ exposed area

S‧‧‧Seal

FIG. 1 is a side view showing an embodiment of a continuous tape winding reel. FIG. 2 is a schematic cross-sectional view showing an embodiment of the adhesive tape. FIG. 3 is a schematic diagram showing an embodiment of a method for producing a bonding tape. FIG. 4 is a schematic cross-sectional view showing a modification of the adhesive tape. FIG. 5 is a schematic cross-sectional view showing another modified example of the adhesive tape. FIG. 6 is a schematic cross-sectional view showing another modified example of the adhesive tape.

Claims (9)

A bonding tape is provided with a first bonding layer on one side of a first release member, wherein a lead-in portion of the bonding tape is not exposed at least at a front end side of the lead-in portion. In the method of adhering a layer, a pickup tape having a thickness of 10 μm or more and 30 μm or less is provided, which terminates at the same position as the lead-in part. The adhesive tape according to item 1 of the patent application scope, wherein the pick-up tape has a second adhesive layer on one side of the second release member, and the second adhesive layer and the The first adhesive layer is fixed to the lead-in portion so as to face each other. The adhesive tape according to item 2 of the scope of patent application, wherein the pick-up tape has a third adhesive layer on the other side of the second release member, and is provided on a termination side of the tape guide portion. An exposed area where the second release member is exposed from the third adhesive layer. The adhesive tape according to item 1 of the patent application scope, wherein the pickup tape has a fourth adhesive layer on the other side of the second release member, and the second release member is attached to the second release member. The first adhesive layer on the adhesive tape side is fixed to the tape guide portion, and an exposed area where the second release member is exposed from the fourth adhesive layer is provided on a termination side of the tape guide portion. The adhesive tape according to item 1 of the patent application scope, wherein the pickup tape includes only a second release member, and the second release member is attached to the first release tape side by attaching the second release member. The layer is then fixed to the lead-in portion. The adhesive tape according to any one of claims 2 to 4, wherein the adhesive layer on the pickup belt side is colored with a color different from that of the first adhesive layer. The adhesive tape according to any one of claims 1 to 6, wherein the width orthogonal to the long side direction is 0.8 mm or less. An adhesive tape winding reel comprising: a winding core wound with the adhesive tape according to any one of claims 1 to 7 of the scope of patent application; and a pair of side plates facing each other with the winding core in between, And the tape guiding portion of the adhesive tape drawn from the winding core is fixed to the outer surface side of the side plate. A method for manufacturing an adhesive tape, wherein the adhesive tape is provided with a first adhesive layer on one side of a first release member, wherein the method for producing the adhesive tape includes: extracting the adhesive tape from a raw material, and In a manner that the first adhesive layer is no longer exposed, a pickup tape having a thickness equal to or greater than the width of the raw material and having a thickness of 10 μm or more and 30 μm or less is attached to the first adhesive layer at regular intervals. ; Cutting the adhesive tape to which the pickup tape is attached into a plurality of adhesive tapes by a cutting process along a long side direction; and cutting the plurality of adhesive tapes together with the pickup tape in a width direction to The tape leading portion is terminated, after which the plurality of adhesive tapes are individually rolled onto a reel.