TWI774850B - Subsequent tape and subsequent tape winding reels - Google Patents

Abstract

The adhesive tape 11 is provided with an adhesive layer 13 on the side of one surface 12a of the release member 12, and is provided with the adhesive layer 13 on the tape portion L of the adhesive tape 11 so that the adhesive layer 13 is not exposed at least at the front end side of the tape portion L. The pick-up tape 21 having a thickness of 10 μm or more and 30 μm or less in which the tape portion L terminates at the same position.

Description

Subsequent tape and subsequent tape winding reels

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

Conventionally, an adhesive tape for connecting connected members having a plurality of electrodes has been used. As such an adhesive tape, for example, there is anisotropic conductive tape. If anisotropic conductive tapes are used, for example, semiconductor elements such as integrated circuits (ICs) and large-scale integrated circuits (LSIs) are connected to printed wiring boards, liquid crystal displays (Liquid Crystal Displays), etc. , LCD) with glass substrates, flexible (flexible) printed substrates and other substrates, can conduct conduction between the opposing electrodes and maintain the insulating state between the adjacent electrodes.

The adhesive tape is formed by, for example, forming an adhesive layer including an adhesive component containing a thermosetting resin and conductive particles prepared as needed on a base material such as polyethylene terephthalate (PET). to make. Next, the tape is produced by slitting the sheet-like raw material into a long strip at a width suitable for the purpose, and storing/transporting/using it in the state of a reel wound on a reel (for example, , refer to Patent Document 1).

[Prior Art Literature] [Patent Literature]

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

Previously, the lead tape protruding from the end of the tape is attached to the lead portion (pull-out portion) of the tape wound around the reel, and the lead tape is attached to the reel, thereby achieving the pull-out of the tape portion. fixed. However, in recent years, the demand for narrower width tapes has been increasing. Therefore, the thickness of the lead tape becomes relatively larger than the width of the adhesive tape, and it is difficult to cut the tape portion of the adhesive tape in a state where the lead tape is attached. In the current situation, after the lead tape attached to the tape portion is temporarily peeled off and diced, 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 was made in order to solve the said subject, and an object is to provide the manufacturing method of a narrow adhesive tape which can simplify a manufacturing process, an adhesive tape winding reel, and an adhesive tape.

In one aspect of the adhesive tape of the present invention, a first adhesive layer is provided on one surface side of the first separator, and the first adhesive layer is not exposed at least on the leading end side of the tape guide portion in the tape guide portion of the adhesive tape. In this way, a pickup tape with a thickness of 10 μm or more and 30 μm or less is provided, which terminates at the same position as the leader tape portion.

In this adhesive tape, a pick-up tape having a thickness of 10 μm or more and 30 μm or less is provided in the leader tape portion. By setting the thickness of the pick-up tape to the above range, it is possible to relatively Decrease the thickness of the pick-up tape relative to the width of the follow-up tape. Therefore, the adhesive tape can be cut into a narrow width by the cutting process in the state where the pick-up tape is attached, and the simplification of the manufacturing process can be achieved. Furthermore, since the first adhesive layer is not exposed on the front end side of the tape leader, even if the tape leader is fixed to a reel or the like, it is possible to prevent the tape leader from being removed from the reel or the like during use. 1. The adhesive layer is peeled off from the first release material.

Furthermore, the pick-up tape may have a second adhesive layer on one surface side of the second release material, and may be fixed to the tape leader so that the second adhesive layer and the first adhesive layer on the adhesive tape side face each other. Thereby, the pick-up tape can be firmly fixed to the adhesive tape.

Furthermore, 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 tape portion. In this case, the tape part can be fixed to the reel or the like by the third adhesive layer without using a separate seal. Furthermore, by providing the exposed area on the termination side of the tape guide portion, the tape guide portion can be easily removed from a reel or the like during use.

Furthermore, the pick-up tape may have a fourth adhesive layer on the other surface side of the second release member, and the second release member may be attached to the first adhesive layer on the adhesive tape side to be fixed to the tape guide portion and an exposed area where the second release member is exposed from the fourth adhesive layer is arranged on the termination side of the lead tape portion. At this time, the tape part can be fixed to the roll etc. by the 4th adhesive layer without using another seal|sticker. Furthermore, by providing the exposed area on the termination side of the tape leader, the tape leader can be easily removed from a reel or the like when the adhesive tape is used. Furthermore, by providing the adhesive layer on one surface side of the second release material, the thickness of the entire tape guide portion including the pick-up tape can be suppressed. Therefore, the cutting process in the state in which the pick-up tape is attached can be performed more reliably.

Furthermore, the pick-up tape may include only the second release member, and the second release member may be attached to the first adhesive layer on the adhesive tape side to be fixed to the tape guide portion. In this case, the thickness of the entire tape portion including the pick-up tape can be further suppressed. Therefore, the cutting process in the state in which the pick-up tape is attached can be performed more reliably.

Furthermore, the adhesive layer on the pickup tape side may be colored with a color different from that of the first adhesive layer. Thereby, the visibility and identification of the pick-up tape can be improved. Therefore, workability such as cutting the tape leader portion when using the adhesive tape can be improved.

In addition, 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 tape portion of the adhesive tape in a state where the conventional lead tape is attached. Therefore, when the width of the adhesive tape is 0.8 mm or less, it is particularly useful to apply the pickup tape.

Further, a tape winding reel according to an aspect of the present invention includes: a core on which the tape is wound; and a pair of side plates facing each other with the core sandwiched therebetween, and a tape leader for the tape drawn out from the core Parts are fixed to the outer surface side of the side plate.

In this adhesive tape winding reel, a pick-up tape having a thickness of 10 μm or more and 30 μm or less is provided in the tape leader portion of the adhesive tape. By making the thickness of a pick-up tape into the said range, the thickness of a pick-up tape with respect to the width|variety of a subsequent tape can be made relatively small. Therefore, the adhesive tape can be cut into a narrow width by the cutting process in the state where the pick-up tape is attached, and the simplification of the manufacturing process can be achieved. Furthermore, since the first adhesive layer is not exposed on the front end side of the tape leader, peeling of the first adhesive layer from the first release material can be prevented when the tape leader is removed from a reel or the like during use.

Moreover, the manufacturing method of the adhesive tape which concerns on one aspect of this invention is the manufacturing method of the adhesive tape provided with the 1st adhesive layer on the one surface side of the 1st release material, which comprises pulling out the adhesive tape from the raw material, and making the 1st adhesive tape In such a way that the adhesive layer is no longer exposed, a pick-up tape with a width equal to the width of the raw material and a thickness of 10 μm or more and 30 μm or less is attached to the first adhesive layer at regular intervals; The tape is cut into a plurality of adhesive tapes by cutting along the longitudinal direction; and the plurality of adhesive tapes are cut in the width direction together with the pick-up tape to terminate the leading portion, and then the plurality of adhesive tapes are respectively wound onto reels .

In this method of manufacturing an adhesive tape, a pick-up tape having a thickness of 10 μm or more and 30 μm or less is applied to the tape part. By making the thickness of a pick-up tape into the said range, the thickness of a pick-up tape with respect to the width|variety of a subsequent tape can be made relatively small. Therefore, the adhesive tape can be cut into a narrow width by the cutting process in the state where the pick-up tape is attached, and the simplification of the manufacturing process can be achieved. Furthermore, in the produced adhesive tape, since the first adhesive layer is not exposed on the front end side of the tape leader portion, even when the tape leader portion is fixed to a reel or the like, the tape leader portion can be prevented from being removed during use. When removing from a roll etc., a 1st adhesive layer peels from a 1st release material.

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

1: Then take the winding reel

2: roll core

2a: hollow part

3: side panel

4: Ribs

11, 31, 51, 71: Next

12: Release part (1st release part)

12a, 22a: one side

12b, 22b: the other side

13: Adhesion layer (the first adhesive layer)

21, 41, 61, 81: Pick up tape

22: Release part (2nd release part)

23: Then layer (2nd layer)

43: Then layer (3rd layer)

63: Then layer (4th layer)

101: Manufacturing device

102: Extraction device

103: Winding device

104: Processing device

F1, F2: end position

L: lead part

P: raw material

R: exposed area

S: Seal

FIG. 1 is a side view showing an embodiment of a 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 of manufacturing an adhesive tape.

4 is a schematic cross-sectional view showing a modification of the adhesive tape.

FIG. 5 is a schematic cross-sectional view showing another modification of the adhesive tape.

FIG. 6 is a schematic cross-sectional view showing another modification of the adhesive tape.

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

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

The winding core 2 is a portion on which the adhesive tape 11 is wound. The core 2 is made of plastic, for example, and is in the shape of an annular shape having the same thickness as the width of the tape 11 . In this embodiment, the adhesive tape 11 is wound around the core 2 so that the adhesive layer 13 (refer to FIG. 2 ) of the adhesive tape 11 faces the inner side (the core 2 side). In the hollow portion 2a of the core 2, for example, a rotating shaft for a winding device for winding the tape 11 to the tape winding reel 1 or an extraction device for drawing out the tape 11 from the tape winding reel 1 can be inserted. shaft hole (not shown). By driving the rotating shaft in a state where the rotating shaft of the winding device or the pulling device is inserted into the shaft hole, the tape winding reel 1 is then rotated without idling.

For example, the side plate 3 includes the same plastic as the winding core 2 and is in the shape of a circular plate. side The thickness of the 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 according to the length of the adhesive tape 11 wound around the core 2 so as to be sufficiently large with respect to the diameter of the core 2 . The central portion of the side plate 3 is provided with a circular opening communicating with the hollow portion 2a of the winding core 2 to enable the arrangement of the shaft holes.

The inner surface of the side plate 3 is provided with a plurality of ribs 4 extending radially from the center side of the adhesive tape winding reel 1 toward the peripheral side. 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 the ribs 4 in this way provides effects such as suppression of roll collapse of the adhesive tape 11 wound around the core 2 and the adhesive layer 13 of the adhesive tape 11 due to collision with the side plate 3 (refer to FIG. 2 ). Inhibition of peeling (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 FIG. 2 , the adhesive tape 11 has a two-layer structure composed of a release material (first release material) 12 and an adhesive layer (first adhesive layer) 13 formed on the side of one surface 12a of the release material 12 . In the present embodiment, as the adhesive tape 11 , an anisotropic conductive tape used for connection between members to be connected is exemplified. The anisotropically conductive tape is an adhesive tape used when, for example, semiconductor elements such as ICs and LSIs are connected 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 opposing electrodes and maintain the insulating state between the adjacent electrodes.

Next, the length of the belt 11 is, for example, 10 m or more and 1000 m or less. In this embodiment, it is 300m, for example. The subsequent tape 11 is stored and transported in the state of a wound body by winding the reel 1 using the aforementioned tape. Next, the width of the belt 11 is, for example, 0.8 mm or less, or preferably 0.6 mm or less. The thickness of the tape 11 (the total thickness of the release material 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.

The mold release process may also be performed on the other surface 12b side of the release member 12 . As the mold release agent for mold release treatment, for example, olefin-based mold release agents, ethylene glycol montanic acid ester, carnauba wax, petroleum waxes and other low melting point waxes, and low molecular weight waxes can be used. Fluorine resins, silicone-based or fluorine-based surfactants, oils, waxes, resins, and silicone resins such as polyester-modified silicone resins, etc. Generally, silicone resins are used.

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

When the adhesive tape 11 is an anisotropically conductive tape, the adhesive tape 13 includes an adhesive component and conductive particles contained as needed. As the adhesive component, for example, a crosslinkable material is preferably used from the viewpoint of being widely applicable to a material that exhibits curability by heat or light, and having excellent heat resistance or moisture resistance after connection. Epoxy-based adhesives containing an epoxy resin as a thermosetting resin as a main component are preferable in that they can be cured in a short time, have good connection workability, and have good adhesiveness in molecular structure. As the epoxy-based adhesive, for example, those mainly composed of high-molecular-weight epoxy resins, solid epoxy resins, or liquid epoxy resins, or those made of urethane, polyester, acrylic rubber, butadiene can be used. Nitrile Rubber (NBR), synthetic linear polyamide, etc. are modified epoxy resins. The epoxy-based adhesive is usually obtained by adding a curing agent, a catalyst, a coupling agent, a filler, and the like to the epoxy resin constituting the main component.

Examples of conductive particles include gold (Au), silver (Ag), platinum (Pt), nickel (Ni), copper (Cu), tungsten (W), antimony (Sb), tin (Sn), solder, and the like. Particles of metal or carbon. In addition, coated particles obtained by using non-conductive glass, ceramic, plastic, etc. as a core and coating the core with the metal or carbon can also be used. From the viewpoint of dispersibility and electrical conductivity, the average particle diameter of the conductive particles is preferably, for example, 1 μm or more and 18 μm or less. In addition, insulating coated particles in which conductive particles are coated with an insulating layer can also be used to improve adjacent From the viewpoint of the insulating properties between the electrodes to be connected, conductive particles and insulating particles may be used together.

A pick-up tape 21 (see FIG. 2 ) is provided at the lead-out portion L of the adhesive tape 11 (the lead-out portion from the adhesive tape winding reel 1 ). As shown in FIG. 1 , the pick-up tape 21 is drawn out from between the side plates 3 and the side plates 3 in the state where the adhesive tape 11 is wound on the adhesive tape winding reel 1 , and is fixed to the outer surface of one of the side plates 3 by the seal S . When the adhesive tape 11 is used, the adhesive tape 11 can be drawn out from the adhesive tape winding reel 1 by grasping the pick-up tape 21 after peeling off the sealing material S. As shown in FIG. The seal S is not particularly limited, and general seals can be used. When the adhesive tape 11 is used, the tape leader portion L may be cut together with the pickup tape 21 .

As shown in FIG. 2 , the pickup tape 21 has a two-layer structure including a release material (second release material) 22 and an adhesive layer (second adhesive layer) 23 formed on the side of one surface 22 a of the release material 12 . The pickup tape 21 is attached to the tape leader portion L such that the adhesive layer 23 faces the adhesive layer 13 on the adhesive tape 11 side. Furthermore, the end position F2 of the pick-up tape 21 coincides with the end position F1 of the leader portion L of the following tape 11 . Thereby, in the tape leader portion L of the adhesive tape 11, the adhesive layer 13 is sandwiched by the release member 12 and the pick-up tape 21, and the adhesive layer 13 is not exposed to the outside.

The length of the pick-up tape 21 is a length corresponding to the lead portion L of the adhesive tape 11 , and is, for example, 30 mm or more and 300 mm or less. Furthermore, the width of the pickup tape 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 tape 21 (the total thickness of the release material 22 and the adhesive layer 23 ) is, for example, 10 μm or more and 30 μm or less, or preferably 10 μm or more and 20 μm the following. When the thickness of the pick-up tape 21 is less than 10 μm, it is considered that the pick-up tape 21 curls at the time of sticking to the adhesive tape 11 and bubbles are generated between the adhesive layer 13 and the adhesive layer 23 . Furthermore, when the thickness of the pickup tape 21 exceeds 30 μm, it is difficult to cut the pickup tape 21 to a width equal to that of the adhesive tape 11 . Therefore, if it is the said thickness range, generation|occurrence|production of air bubbles can be suppressed, and the cutting|disconnection of the pick-up tape 21 can be performed easily.

As the material of the release material 22, like the release material 12 following the tape 11, for example, extended 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 a material of the adhesive layer 23, for example, a silicone-based adhesive or an acrylic-based adhesive can be used. Considering the specifications of the final product of the customer, it is required to be free of silicone (silicone free) including auxiliary materials other than the adhesive layer 13 , it is preferable to use an acrylic adhesive as the material of the adhesive layer 23 . Furthermore, from the viewpoint of improving the visibility and visibility of the pickup tape 21 , it is preferable that the adhesive layer 23 is colored with a color different from that of 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. As an example, the color of the adhesive layer 13 on the adhesive tape 11 side may be colorless and transparent, and the color of the adhesive layer 23 on the pickup tape 21 side may be blue. Furthermore, when white PET is used for the release material 12, the color of the release material 22 and the adhesive layer 23 of the pickup tape 21 may be black in terms of contrast.

Next, the manufacturing method of the adhesive tape 11 is demonstrated.

FIG. 3 is a schematic diagram showing an embodiment of a method of manufacturing an adhesive tape. As shown in FIG. 3 , the manufacturing apparatus 101 is used for manufacturing the adhesive tape 11 . The manufacturing apparatus 101 includes: an extraction apparatus 102 on which the raw material P of the adhesive tape 11 is wound; a winding apparatus 103 on which a plurality of adhesive tape winding reels 1 are rotatably attached; and a processing apparatus 104 for cutting the adhesive tape 11 processing.

The tape 11 is pulled out from the raw material P at a constant speed from the pull-out device 102 . With respect to the adhesive tape 11 drawn out from the draw-out device 102 , a large pick-up tape 21 having a thickness of 10 μm or more and 30 μm or less and having a width equal to the width of the material P is attached at regular intervals. At this time, the adhesive layer 23 of the pick-up tape 21 and the adhesive layer 13 of the adhesive tape 11 are made to face each other. Thereby, the adhesive layer 13 of the adhesive tape 11 is not exposed to the outside in the portion to which the pickup tape 21 is attached.

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

After the tape leader portion L is terminated, the plurality of tapes 11 to which the pick-up tapes 21 are attached are respectively wound onto the core 2 of the tape winding reel 1 by the winding device 103 . Then, the lead portion L is drawn out from the side plate 3 of the adhesive tape winding reel 1 and between the side plates 3 , and is fixed to the outer surface of one of the side plates 3 by the sealing member S. Thereby, the adhesive tape 11 wound around the adhesive tape winding reel 1 as shown in FIG. 1 is obtained.

As described above, in the adhesive tape 11 , the pick-up tape 21 having a thickness of 10 μm or more and 30 μm or less is provided in the tape part L. By making the thickness of the pick-up tape 21 into the said range, the thickness of the pick-up tape 21 with respect to the width|variety of the adhesive tape 11 can be made relatively small. Therefore, the adhesive tape 11 can be cut into a narrow width by the cutting process in the state where the pickup tape 21 is attached, and the simplification of the manufacturing process can be achieved. Furthermore, since the adhesive layer 13 is not exposed on the front end side of the tape leader portion L, even when the tape leader portion L is fixed to the tape winding reel 1, the tape leader portion L can be prevented from being self-bonded during use. When the tape winding reel 1 is removed, the adhesive layer 13 is peeled off from the release member 12 .

Moreover, in this embodiment, the pick-up tape 21 has the adhesive layer 23 on the side of one surface 22a of the release member 22, and is fixed to the tape guide portion L so that the adhesive layer 23 faces the adhesive layer 13 on the adhesive tape 11 side. Thereby, the pickup tape 21 can be firmly fixed to the adhesive tape 11 .

Furthermore, in this embodiment, the adhesive layer 23 on the side of the pickup tape 21 is colored with a color different from that of the adhesive layer 13 on the side of the adhesive tape 11 . Thereby, the visibility and identification of the pick-up tape 21 can be improved. Therefore, workability such as cutting the tape leader portion L when using the adhesive tape 11 can be improved.

Moreover, in this embodiment, the width|variety orthogonal to the longitudinal direction of the adhesive tape 11 is 0.8 mm or less. For example, in the processing apparatus 104 for cutting the adhesive tape 11, the adhesive tape 11 is cut by overlapping the upper knife and the lower knife. The clearance (clearance) is also narrowed. Therefore, when the thickness of the object to be cut becomes relatively larger than the width, it becomes difficult for the knife to pass through the object to be cut. In this regard, for example, by reducing the thickness of the upper blade, it can be fixed It can be dealt with to a certain extent, but in terms of the wearability of the knife, there is also a limit to the thinning of the upper knife. From the above, when the width of the adhesive tape is 0.8 mm or less, it is difficult to cut the tape portion of the adhesive tape in a state where the conventional lead tape is 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 tape leader portion L.

The straps can then take various modifications. 4 is a schematic cross-sectional view showing a modification of the adhesive tape. In the adhesive tape 31 shown in FIG. 4, the structure of the pick-up tape 41 provided in the tape leader part L differs from the said embodiment. Specifically, the pick-up tape 41 includes a release member (second release member) 22 , an adhesive layer (second adhesive layer) 23 formed on the side of one surface 22 a of the release member 22 , and an adhesive layer formed on the release member 22 . The three-layer structure constituted by the adhesive layer (third adhesive layer) 43 on the other surface 22b side. The thickness of the pickup tape 41 (the total thickness of the release material 22 , the adhesive layer 23 and the adhesive layer 43 ) is, for example, 10 μm or more and 30 μm or less, or preferably 10 μm or more and 20 μm or less.

The adhesive layer 43 includes, for example, the same material as the adhesive layer 23 . Like the adhesive layer 23 , the adhesive layer 43 may be colored with a color different from that of the adhesive layer 13 on the adhesive tape 31 side. In the adhesive tape 31, the termination position F2 of the pick-up tape 41 is consistent with the termination position F1 of the lead tape portion L of the adhesive tape 31, but the other side 22b of the release member 22 is provided on the termination side of the lead tape portion L from the adhesive layer. 43 exposed area R exposed. 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 in such an adhesive tape 31, the adhesive tape 31 can be cut into a narrow width by cutting in a state where the pick-up tape 41 is attached, thereby realizing a manufacturing step. simplification of steps. Furthermore, since the adhesive layer 13 is not exposed on the front end side of the tape leader portion L, even when the tape leader portion L is fixed to the tape winding reel 1, the tape leader portion L can be prevented from being self-bonded during use. When the tape winding reel 1 is removed, the adhesive layer 13 is peeled off from the release member 12 .

Furthermore, in the adhesive tape 31, the tape leader portion L can be fixed to the adhesive tape winding reel 1 by the adhesive layer 43 without additionally using the sealing member S (refer to FIG. 1). Furthermore, since the exposed region R is provided at the end side of the tape leader portion L, the exposed region R becomes a grip portion when the tape leader portion L is peeled off from the adhesive tape winding reel 1, so that the tape leader portion can be easily removed during use. L is taken off from the tape winding reel 1 .

FIG. 5 is a schematic cross-sectional view showing another modification of the adhesive tape. In the adhesive tape 51 shown in FIG. 5, the structure of the pick-up tape 61 provided in the tape leader part L is further different from the said embodiment. Specifically, the pick-up tape 61 has a two-layer structure composed of the release material (second release material) 22 and the adhesive layer (fourth adhesive layer) 63 formed on the other surface 22 b side of the release material 22 . The pickup tape 61 is fixed to the adhesive tape 51 by directly adhering 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 tape 61 (the total thickness of the release material 22 and the adhesive layer 63 ) is, for example, 10 μm or more and 30 μm or less, or preferably 10 μm or more and 20 μm or less.

The adhesive layer 63 has, for example, the same configuration as that of the adhesive layer 23 (see FIG. 2 ). That is, the adhesive layer 63 includes the same material as the adhesive layer 23 . Furthermore, the adhesive layer 63 is colored with a color different from that of 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 tape part L of the follower tape 51, but the other surface 22b of the release member 22 on the end side of the lead tape part L is exposed from the adhesive layer 63 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 in such an adhesive tape 51, the adhesive tape 51 can be cut into a narrow width by cutting in a state where the pickup tape 61 is attached, thereby simplifying the manufacturing process. Furthermore, since the adhesive layer 13 is not exposed on the front end side of the tape leader portion L, even when the tape leader portion L is fixed to the tape winding reel 1, the tape leader portion L can be prevented from being self-bonded during use. When the tape winding reel 1 is removed, the adhesive layer 13 is peeled off from the release member 12 .

Furthermore, in the adhesive tape 51, the tape leader portion L can be fixed to the adhesive tape winding reel 1 by the adhesive layer 63 without additionally using the sealing member S (refer to FIG. 1). Furthermore, since the exposed region R is provided at the end side of the tape leader portion L, the exposed region R becomes a grip portion when the tape leader portion L is peeled off from the adhesive tape winding reel 1, so that the tape leader portion can be easily removed during use. L is taken off from the tape winding reel 1 . Furthermore, in the adhesive tape 51, the adhesive layer is not provided on the side of the one surface 22a of the release material 22 of the pickup tape 61, whereby the overall thickness of the tape leader portion L including the pickup tape 61 can be suppressed. Therefore, the cutting process in the state where the pickup tape 61 is attached can be performed more reliably.

6 is a schematic cross-sectional view showing another modification of the adhesive tape. In the adhesive tape 71 shown in FIG. 6, the structure of the pick-up tape 81 provided in the tape leader part L is further different from the said embodiment. Specifically, the pickup tape 81 has a single-layer structure having only the release material (second release material) 22 . The pick-up tape 81 is fixed to the adhesive tape by directly adhering the one surface 22a side of the release member 22 to the adhesive layer 13 on the adhesive tape 71 side 71. When fixing the tape guide portion L of the adhesive tape 71 to the adhesive tape winding reel 1 , the sealing material S may be used in the same manner as in FIG. 1 . The thickness of the pickup tape 81 (thickness of the release material 22 ) is, for example, 10 μm or more and 30 μm or less, or preferably 10 μm or more and 20 μm or less.

Even in such an adhesive tape 71, the adhesive tape 71 can be cut into a narrow width by cutting in a state where the pickup tape 81 is attached, thereby simplifying the manufacturing process. Furthermore, since the adhesive layer 13 is not exposed on the front end side of the tape leader portion L, even when the tape leader portion L is fixed to the tape winding reel 1, the tape leader portion L can be prevented from being self-bonded during use. When the tape winding reel 1 is removed, the adhesive layer 13 is peeled off from the release member 12 . Furthermore, in the adhesive tape 71, since the pick-up tape 81 has a single-layer structure including only the release material 22, the thickness of the entire leader portion L including the pick-up tape 81 can be further suppressed. Therefore, the cutting process in the state where the pickup tape 81 is attached can be performed more reliably.

11: Then bring

12: Release part (1st release part)

12a, 22a: one side

12b: The other side

13: Adhesion layer (the first adhesive layer)

21: Pickup Tape

22: Release part (2nd release part)

23: Then layer (2nd layer)

F1, F2: end position

L: lead part

Claims (4)

An adhesive tape, which is provided with a first adhesive layer on one side of a first release member, wherein, in a lead portion of the adhesive tape, the first adhesive layer is not exposed at least at the front end side of the lead portion. In the method of the adhesive layer, a pick-up tape with a thickness of 10 μm or more and 30 μm or less that ends at the same position as the tape part is provided, and the pick-up tape has a second adhesive layer on one side of the second release member and is The other side of the second release member has a third adhesive layer, and the second adhesive layer is fixed to the lead tape portion in a manner that the second adhesive layer and the first adhesive layer on the adhesive tape side face each other. An exposed area where the second release member is exposed from the third adhesive layer is disposed on the termination side of the lead tape portion. The adhesive tape according to claim 1, wherein at least one of the second adhesive layer and the third adhesive layer on the pick-up tape side is colored with a different color from the first adhesive layer. color. The adhesive tape according to claim 1 or claim 2, wherein the width perpendicular to the longitudinal direction is 0.8 mm or less. An adhesive tape winding reel, comprising: a core on which the adhesive tape described in item 1 or 2 of the scope of application is wound; and a pair of side plates facing each other sandwiching the coil core, and extending from the The lead portion of the adhesive tape drawn from the core is fixed to the side the outer surface side of the board.

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