JP2015006937A - Winding core holder, winding core unit, and film-like adhesive set - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a winding core holder which attaches a core material to a rotation shaft and ensures force transmission between the core material and the rotation shaft, thereby stably feeding a film-like adhesive.SOLUTION: A winding core holder 1 includes: an outer peripheral part 10 which is inserted into a winding core and holds the winding core; a rotation shaft insertion part 9 having an opening part 8 into which the rotation shaft is inserted, the rotation shaft insertion part 9 into which the rotation shaft fits; and a connection part 11 which extends from the rotation shaft insertion part 9 to the radial outer side and is connected with the outer peripheral part 10. A reception part 13 which receives a protruding part protruding from an outer peripheral surface of the rotation shaft is formed at a periphery of the opening part 8.

Description

  The present invention relates to a core holder for mounting a cylindrical core wound with a film-like adhesive on a rotating shaft, a core unit including the core holder, and an anisotropic conductive material tape set. About.

  As a film-like adhesive, an anisotropic conductive material tape that bonds and fixes an electronic component and a circuit board, circuit boards, and the like and electrically connects electrodes facing each other is known. By sandwiching such an anisotropic conductive material tape between opposing electrodes and applying heat and pressure, the substrates can be bonded to each other and the electrodes can be made conductive.

  Conventionally, an anisotropic conductive material tape has been provided as a reel product by being wound around a reel, which is a disk-shaped core material, for example. Further, it has been proposed to supply an anisotropic conductive material tape as a product by using a cylindrical body having a predetermined length in the center line direction as a core material and winding an anisotropic conductive material tape around the core material. (For example, refer to Patent Document 1).

JP 2004-59776 A

  When using a film-like adhesive wound around the core material, the film-like adhesive is formed by inserting the rotating shaft of the feeding device into the opening of the core material and fixing the core material to the rotating shaft. The wound body is supported rotatably. At this time, if the coupling between the core material and the rotating shaft is insufficient, the transmission of force between them will be insufficient, for example, the rotating shaft will idle, and a film-like adhesive will be wound. Can not be stably pulled out from the body. Further, when the core is directly mounted on the rotating shaft, there is a problem that when the inner diameter of the core is changed, it cannot be mounted on the conventional rotating shaft as it is.

  The present invention provides a core holder that allows a core material to be attached to a rotary shaft, ensures transmission of force between the core material and the rotary shaft, and can stably deliver a film-like adhesive. An object of the present invention is to provide a core unit and a film adhesive set.

  Another object of the present invention is to provide a core holder, a core unit, and a film adhesive set that can be attached to a conventional rotating shaft even if the inner diameter of the core is changed. To do.

  The core holder according to the present invention is a core holder that is attached to an end of a cylindrical core around which a film-like adhesive is wound to attach the core to a rotary shaft. An outer peripheral portion that is inserted into the rotary shaft, has an opening through which the rotary shaft is inserted, and has a rotary shaft insertion portion that is fitted to the rotary shaft. The outer peripheral portion extends radially outward from the rotary shaft insertion portion. And a receiving portion that receives a convex portion protruding from the outer peripheral surface of the rotating shaft is formed on the periphery of the opening.

  The core holder of the present invention is a core holder for attaching a cylindrical core to a rotating shaft, and a protrusion protruding from the outer peripheral surface of the rotating shaft is provided at the periphery of the opening into which the rotating shaft is inserted. A receiving part for receiving the part is formed. Thereby, the rotating shaft can be inserted into the opening of the core holder, and the convex portion of the rotating shaft can be inserted into the receiving portion formed on the periphery of the opening. When the rotary shaft is rotated around the axis, the rotational force is transmitted to the receiving portion with which the convex portion of the rotary shaft abuts, so that the film-like adhesive can be stably fed by rotating the winding core together with the rotary shaft. it can.

  In addition, since the core can be attached to the rotary shaft via the core holder, even if the size of the core is changed, it can be attached to the conventional rotary shaft simply by changing the size of the core holder. be able to. For this reason, it is possible to avoid a cost burden such as changing the rotation axis.

  Further, the receiving portion may be configured to extend outward in the radial direction of the opening. If the receiving portion extends radially outward, the protruding length of the convex portion protruding from the outer peripheral surface of the rotating shaft can be increased, so that the region where the convex portion of the rotating shaft and the receiving portion are in contact with each other in the radial direction Can be increased. Therefore, the rotational force of the rotating shaft can be reliably transmitted to the core holder, and the film-like adhesive can be fed out stably.

  Moreover, the structure which has penetrated in the direction where the centerline of an opening part extends may be sufficient as a receiving part. When the receiving portion penetrates in the direction in which the center line extends, the convex portion protruding from the outer peripheral surface of the rotating shaft can be elongated in the longitudinal direction of the rotating shaft. Can be increased in the longitudinal direction of the rotating shaft. Therefore, the rotational force of the rotating shaft can be reliably transmitted to the core holder, and the film-like adhesive can be fed out stably.

  The core holder may have a configuration including a pair of receiving portions arranged to face each other in the radial direction of the opening. Thus, if the receiving part is arrange | positioned at the both sides of radial direction, the convex part which protrudes from the outer peripheral surface of a rotating shaft can be provided in the both sides of the radial direction of a rotating shaft. Thereby, a pair of convex part which protrudes from a rotating shaft can be inserted in a receiving part, respectively, The force which acts on a convex part can be disperse | distributed, and a core can be rotated. Further, when the convex portions are provided at a plurality of locations, for example, even if a problem occurs in one convex portion, the rotational force of the rotating shaft can be transmitted by the remaining convex portions to rotate the core holder. .

  An outer peripheral protrusion that protrudes radially outward may be formed on the outer peripheral portion. As described above, when the outer peripheral protrusion that protrudes radially outward is formed on the outer peripheral portion that is inserted into the core and holds the core, the outer peripheral protrusion is caught on the inner peripheral wall of the core, and the core The winding force can be reliably transmitted to the winding core to rotate the winding core. Therefore, since the rotational force of a rotating shaft is transmitted to a core via a core holder, a film-like adhesive can be paid out stably.

  The film-like adhesive may be an anisotropic conductive material tape having a base film and an anisotropic conductive material layer that is an adhesive layer provided on the base film. Accordingly, the anisotropic conductive material tape can be stably fed out by rotating the winding core together with the rotating shaft.

  Moreover, the core unit of the present invention includes the above-described core holder and a cylindrical core around which a film-like adhesive is wound, and the core holder is provided at the opening at the end of the core. It is fitted.

  The core unit of the present invention includes a core holder, and a receiving portion that receives a protruding portion that protrudes from the outer peripheral surface of the rotating shaft is formed on the periphery of the opening of the core holder. . Thereby, the rotating shaft can be inserted into the opening of the core holder, and the convex portion of the rotating shaft can be inserted into the receiving portion formed on the periphery of the opening. When the rotary shaft is rotated around the axis, the rotational force is transmitted to the receiving portion with which the convex portion of the rotary shaft abuts, so that the film-like adhesive can be stably fed by rotating the winding core together with the rotary shaft. it can. In addition, since the core unit and the core holder are integrally formed in the core unit, it is not necessary to combine the core and the core holder before mounting on the rotating shaft, and handling is easy.

  Moreover, the film adhesive set of this invention is equipped with said winding core unit and the wound body of the film adhesive wound around the winding core.

  The film adhesive set of the present invention includes a core holder, and a receiving portion for receiving a convex portion protruding from the outer peripheral surface of the rotating shaft is formed on the periphery of the opening of the core holder. ing. Thereby, the rotating shaft can be inserted into the opening of the core holder, and the convex portion of the rotating shaft can be inserted into the receiving portion formed on the periphery of the opening. When the rotary shaft is rotated around the axis, the rotational force is transmitted to the receiving portion with which the convex portion of the rotary shaft abuts, so that the film-like adhesive can be stably fed by rotating the winding core together with the rotary shaft. it can. Moreover, since the film-like adhesive set includes a core unit in which the core and the core holder are integrated, it is necessary to combine the core and the core holder before mounting on the rotating shaft. It is easy to handle. According to the film adhesive set, it can be provided as a product in which the core unit and the wound body of the anisotropic conductive material tape are integrally formed.

  According to the present invention, it is possible to attach the winding core on which the film-like adhesive is wound to the rotating shaft, to ensure transmission of force between the winding core and the rotating shaft, and to form the film-like adhesive. It is possible to provide a core holder, a core unit, and a film-like adhesive set that can stably feed the core.

  In addition, by attaching the core to the rotating shaft via the core holder, even if the core size is changed, it can be attached to the conventional rotating shaft simply by changing the size of the core holder. it can. For this reason, it is possible to avoid a cost burden such as changing the rotation axis.

It is a typical perspective view which shows the anisotropic conductive material tape wound around the winding core and the winding core with which the winding core holder which concerns on embodiment of this invention was mounted | worn. It is a typical side view which shows the core and anisotropic conductive material tape which were hold | maintained at the rotating shaft through the core holder. It is a typical sectional view of an anisotropic conductive material tape. It is a typical front view of a winding core holder. It is a typical front view which shows the modification of a core holder.

  Hereinafter, preferred embodiments of a core holder, a core unit, and a film adhesive set according to the present invention will be described in detail with reference to the drawings.

  As shown in FIGS. 1 and 2, the core holder 1 fixes a core (core material) 4 around which an anisotropic conductive material tape (film adhesive) 2 is wound, to a rotating shaft 5. It is used when doing. The anisotropic conductive material tape 2 wound around the core 4 is referred to as a wound body 3. The rotating shaft 5 is provided in a feeding device for pulling out the anisotropic conductive material tape 2 from the wound body 3. For example, a rotating driving force output from an electric motor as a driving source is transmitted to rotate around the axis. To do.

  The core unit 31 includes a core 4 and a pair of core holders 1 fitted in the openings 4 a at both ends of the core 4. An anisotropic conductive material tape set (film adhesive set) 32 includes a core unit 31 and a wound body 3.

  When the anisotropic conductive material tape 2 wound around the core 4 is used, the wound body 3 is fixed while the core 4 is fixed to the rotating shaft 5 and the rotating shaft 5 and the core 4 are rotated. The anisotropic conductive material tape 2 is pulled out from.

  FIG. 3 is a schematic cross-sectional view of the anisotropic conductive material tape 2. As shown in FIG. 3, the anisotropic conductive material tape 2 includes a film-like adhesive layer (anisotropic conductive material layer) 6 and a base film 7 that holds the adhesive layer 6. Examples of materials that can be used for the base film 7 include polypropylene (PP), stretched polypropylene (OPP), and polyethylene terephthalate (PET). The base film 7 preferably has a breaking strength of 80 to 400 MPa and a breaking elongation of 30 to 200%. The breaking strength and breaking elongation are measured by JIS C2318 or a method according thereto. By using the base film 7 having such a breaking strength and breaking elongation, the adhesive layer 6 is prevented from extending together with the base film 7, and the performance stability of the product after joining is further improved. Can do.

  The thickness of the base film 7 is preferably 100 μm or less (preferably 75 μm or less, more preferably 50 μm or less). By making the thickness of the base film 7 within this range, the thickness of the anisotropic conductive material tape 2 can be reduced, and the length of the anisotropic conductive material tape 2 that can be wound around the core 4 is increased. And productivity can be improved. In addition, as a minimum of the thickness of the base film 4, it is about 10 micrometers.

  The width of the base film 7 is preferably the same as the width of the adhesive layer 6 or larger than the width of the adhesive layer 6. Specifically, since the width of the adhesive layer 6 is preferably 0.5 to 5 mm, a width equal to or wider than 50%, that is, a width of about 0.5 to 7.5 mm is preferable. When the width of the base film 7 is wider than the adhesive layer 6, the adhesive layer 6 is preferably arranged at the center in the width direction of the base film 7.

  The base film 7 may have a surface subjected to a release treatment. Here, the “mold release treatment” refers to a treatment that lowers the adhesion of the material by lowering the surface of the base film. As the mold release treatment, a method of surface treatment with silicone or a fluorine compound is typical. It is preferable that both surfaces of the base film 7 are subjected to a release treatment. By performing the mold release treatment in this way, the adhesive layer 6 can be easily peeled from the base film 7 when adhered to an electronic substrate or the like.

  The adhesive layer 6 is typically one in which conductive particles for obtaining electrical conduction between electrodes are mixed with a resin. Examples of the resin include a thermoplastic resin, a thermosetting resin, a thermoplastic resin, and a thermosetting resin. A resin mixed system and a photocurable resin can be used (for example, see JP-A-55-104007). The conductive particles may not be included and the resin particles may be used alone (see, for example, JP-A-60-262430).

  As the thermoplastic resin, there are a styrene resin system and a polyester resin system, and as the thermosetting resin system, an epoxy resin system, a silicone resin system, an acrylic resin system, and the like are known. Usually, heating and pressurization are required to connect both the thermoplastic resin system and the thermosetting resin system. This is because the thermoplastic resin system allows the resin to flow to obtain adhesion to the adherend, and the thermosetting resin system further performs a resin curing reaction. In addition, the photo-curing resin system is useful for applications requiring connection at a low temperature.

  There is no restriction | limiting in particular in the thickness of the adhesive bond layer 6, According to the application to apply, it can determine suitably. The thickness of the adhesive layer 6 can be 1-100 micrometers (preferably 5-100 micrometers, Furthermore, 10-40 micrometers), for example.

  As shown in FIGS. 1 and 2, the core 4 is a cylindrical body having a predetermined length in the axial direction. The outer diameter of the core 4 is, for example, 90 mm, preferably 60 to 120 mm, and the inner diameter of the core 4 is, for example, 76 mm. The length of the winding core 4 in the axial direction is, for example, 50 to 150 mm.

  The anisotropic conductive material tape 2 is wound along the outer peripheral surface of the core 4, wound in a plurality of rows in a region of a predetermined length in the axial direction of the core 4, and then sequentially wound outward in the radial direction. Is wound multiple times. The total length of the anisotropic conductive material tape 2 wound around the core 4 is, for example, 3000 m. The axial width of the wound body 3 at this time is, for example, 20 mm, and the outer diameter of the wound body 3 is, for example, 150 mm. Further, the wound body 3 is disposed in a central region in the axial direction of the core 4.

  FIG. 4 is a schematic front view of the core holder 1. The core holder 1 is used by being attached to both ends of the core 4 in the axial direction. The front surface of the core holder 1 is a surface facing outward in the axial direction of the core 4 in a state of being fitted to the core 4. An opening 8 through which the rotary shaft 5 is inserted is formed in the center of the core holder 1. The core holder 1 has an opening 8 and a hub (rotary shaft insertion portion) 9 that is fitted to the rotary shaft 5, and an outer peripheral wall (outer peripheral portion) that is inserted into the core 4 and holds the core 4. ) 10 and a connecting portion 11 extending radially outward from the hub 9 and connected to the outer peripheral wall 10.

  A receiving portion (notch portion) 13 for receiving a convex portion (not shown) protruding from the outer peripheral surface of the rotating shaft 5 is formed on the periphery of the opening portion 8 of the hub 9. The receiving portion 13 extends outward in the radial direction of the opening 8 and is formed up to the inner surface side of the outer peripheral wall 10 in the radial direction. The receiving portion 13 penetrates in the axial direction of the opening 8. The receiving portion 13 has a pair of wall bodies 14 extending in the radial direction when viewed from the front side, and the pair of wall bodies 14 are continuous from the hub 9 to the outer peripheral wall 10 in the radial direction. And the convex part of the rotating shaft 5 is accommodated in the area | region enclosed by the outer peripheral wall 10 between a pair of wall body 14 and this wall body 14. FIG. The distance between the pair of wall bodies 14 of the receiving portion 13 is, for example, 6 mm, and the radial length of the pair of wall bodies 14 is, for example, 14.5 mm. The size of the receiving portion 13 corresponds to the shape of the convex portion of the rotating shaft 5. The convex part of the rotating shaft 5 accommodated in the receiving part 13 is in contact with the pair of wall bodies 14. The receiving portion 13 may not reach the outer peripheral wall 10 in the radial direction. The convex portion of the rotating shaft 5 may be projected to the outside of the core holder 1 in the axial direction of the rotating shaft.

  The outer peripheral wall 10 is continuous in the circumferential direction along the outer peripheral edge of the core holder 1. The outer peripheral wall 10 has a predetermined length in the axial direction of the opening 8. The outer surface of the outer peripheral wall 10 (the surface facing the radially outer side) is a surface that comes into contact with the inner peripheral surface of the core 4. On the outer surface of the outer peripheral wall 10, a protruding portion (outer peripheral protruding portion) 15 protruding outward in the radial direction is formed. The protrusion 15 is abutted against the inner peripheral surface of the core 4, and the core holder 1 is hooked on the core 4, whereby the rotational force of the core holder 1 is transmitted to the core 4. The position of the protrusion 15 in the circumferential direction may be the same as or different from the position of the receiving part 13 in the circumferential direction.

  The connecting portion 11 has a plate-like portion 16 that connects the hub 9 and the outer peripheral wall 10 on the back side, and ribs 17 and 18 formed on the front side of the plate-like portion 16. The thickness direction of the plate-like portion 16 is arranged along the axial direction of the opening 8. The plate-like portion 16 is disposed so as to cover between the hub 9 and the outer peripheral wall 10 in the radial direction. Note that the plate-like portion 16 is not formed in the region where the receiving portion 13 is formed. In the plate-like portion 16, a notch penetrating in the axial direction of the opening 8 may be formed. By providing such a notch, material reduction and weight reduction can be achieved.

  For example, the ribs 17 and 18 protrude from the plate-like portion 16 to the front side and extend radially outward from the hub 9 in the radial direction. The rib 18 is arranged on the opposite side of the opening 13 with respect to the receiving portion 13 in the radial direction. In addition, the rib 17 is disposed between the rib 17 and the pair of wall bodies 14 of the receiving portion 13 in the circumferential direction. The rib 18 is connected to the hub 9 and the outer peripheral wall 10 in the radial direction. The ribs 17 are not connected to the outer peripheral wall 10 in the radial direction, but may be connected to the outer peripheral wall 10.

Next, the operation of the core holder 1 will be described.
The core holder 1 is fitted to both ends of the core 4 in the longitudinal direction, and is used in a state where the inner peripheral surface of the core 4 and the outer peripheral wall 10 of the core holder 1 are in contact. At this time, the protrusion 15 of the core holder 1 is in a state of being abutted against the inner peripheral surface of the core 4, and the connection between the core holder 1 and the core 4 is strengthened.

  In a state where the core holder 1 is mounted on the core 4, the rotary shaft 5 is inserted through the opening 8 of the core 4. The rotary shaft 5 passes through the core 4 in the axial direction, and is inserted through the openings 8 of the pair of core holders 1 attached to both ends of the core 4. The hub 9 of the core holder 1 is fitted into the rotary shaft 5, and at this time, the protrusion protruding from the outer peripheral surface of the rotary shaft 5 is accommodated in the receiving portion 13 of the core holder 1. Become. The convex part of the rotating shaft 5 is sandwiched between the pair of wall bodies 14 and is in contact with the wall bodies 14 adjacent in the circumferential direction.

  Thereby, the core 4 can be attached to the rotary shaft 5 via the core holder 1, and the wound body 3 is supported so as to be rotatable together with the rotary shaft 5. And the winding body 3 can be rotated by rotating the rotating shaft 5 around an axis | shaft, and the anisotropic conductive material tape 2 can be pulled out from the winding body 3, and can be used.

  In such a core holder 1, the receiving portion 13 that receives the convex portion of the rotating shaft 5 is formed at the periphery of the opening portion 8 into which the rotating shaft 5 is inserted. The convex portion can be inserted to transmit the rotational force of the rotary shaft 5 to the core holder 1. The winding core holder 1 mounts the winding core 4 on the rotating shaft 5 and ensures the transmission of the circumferential force between the winding core 4 and the rotating shaft 5 to rotate the winding body 3 to wind. The anisotropic conductive material tape 2 can be pulled out from the rotating body 3 stably.

  Further, since the receiving portion 13 is formed so as to reach from the hub 9 to the inside of the outer peripheral wall 10 in the radial direction, the protruding length of the convex portion of the rotating shaft 5 can be increased. Thereby, the area | region where the convex part of the rotating shaft 5 and a pair of wall body 14 contact can be increased to radial direction. Therefore, the rotational force of the rotating shaft 5 can be reliably transmitted to the core holder 1, and the anisotropic conductive material tape 2 can be pulled out more stably.

  Moreover, since the receiving part 13 is formed so that it may penetrate from the front side of the core holder 1 to the back side, the convex part of the rotating shaft 5 can be elongated in the axial direction of the rotating shaft 5, The area | region where the convex part of the rotating shaft 5 and the receiving part 13 contact can be increased. Therefore, the anisotropic conductive material tape 2 can be pulled out stably by transmitting the rotational force of the rotating shaft 5 to the core holder 1.

  In addition, since the core 4 can be attached to the rotary shaft 5 via the core holder 1, even if the size of the core 4 is changed, the size of the core holder 1 is simply changed. The rotary shaft 5 can be attached. Therefore, it is possible to avoid a cost burden such as a change of the rotating shaft 5 of the feeding device.

  Further, since the anisotropic conductive material tape set 32 includes the core unit 31 configured integrally with the core holder 1 fitted to the core 4, the core 4 before being attached to the rotary shaft 5 is provided. And the core holder 1 are not required to be combined and are easy to handle. Moreover, according to the anisotropic conductive material tape set 32, the core unit 31 and the wound body 3 can be provided as a product configured integrally.

  The present invention is not limited to the above-described embodiment, and various modifications as described below are possible without departing from the gist of the present invention.

  In the above embodiment, the core holder 1 including one receiving portion 13 has been described, but a plurality of receiving portions 13 may be formed. FIG. 5 is a schematic front view showing a core holder 21 according to a modification. As shown in FIG. 5, the core holder 21 includes a pair of receiving portions 13 arranged to face each other in the radial direction with the opening 8 interposed therebetween. Further, the inner diameter of the opening 8 of the core holder 21 is larger than the inner diameter of the opening 8 of the core holder 1.

  Moreover, in the core holder 1 of the said embodiment, although the connection part 11 is equipped with the ribs 17 and 18, as FIG. 5 shows, the connection part 22 which is not provided with the ribs 17 and 18 may be sufficient. The connecting portion 22 is formed in an arc shape when viewed from the front side, and connects the rotating shaft insertion portion 23 of the core holder 21 and the outer peripheral wall 10 in the radial direction.

  Moreover, in the said embodiment, although the anisotropic conductive material tape 2 which has the adhesive bond layer 6 and the base film 7 is wound around the core 4, the anisotropic conductive material tape 2 wound around the core 4 is two layers. It is not limited to the structure, but may be an anisotropic conductive material tape having a structure of three or more layers. For example, an anisotropic conductive material tape including a plurality of substrate films may be used.

  Moreover, in the said embodiment, although the anisotropic conductive material tape 2 which has anisotropic conductivity is illustrated as a film-form adhesive, a film-form adhesive is not limited to an anisotropic conductive material tape, Isotropic Other film adhesives such as a conductive material tape and an insulating material tape may be wound around the core. The isotropic conductive material tape includes an adhesive layer having isotropic conductivity, and the content of conductive particles contained in the adhesive layer is greater than that of the adhesive layer of the anisotropic conductive material tape. The insulating material tape includes an adhesive layer that does not contain conductive particles and has electrical insulating properties.

  Further, the film-like adhesive is not limited to the belt-like adhesive tape, and may be in the form of a film and have a predetermined width, or may be in other shapes. Further, the film-like adhesive may be composed only of an adhesive layer without a base film.

  Moreover, in the said embodiment, although the receiving part which accommodates the convex part of the rotating shaft 5 becomes a structure penetrated from the front of the core holder 1 to the back surface, the receiving part is the convex part of the rotating shaft 5. What is necessary is just to be accommodated and what does not penetrate may be sufficient. For example, the back surface side may be configured to be covered with the plate-like portion 16 of the connecting portion 11, and in this case, the convex portion of the rotation shaft 5 and the plate-like portion 16 come into contact with each other, whereby the axial direction of the rotation shaft 5 is reached. The position of the core holder 1 can be regulated.

  Moreover, in the said embodiment, although the outer periphery projection part 15 is formed in the outer surface of the outer peripheral wall 10, a core holding tool provided with the some outer periphery protrusion part 15 may be sufficient, and the core holding | maintenance which is not provided with the outer periphery protrusion part 15 may be sufficient. It may be a tool.

  In addition, the core unit and the film adhesive set may include the core holder 21 shown in FIG. 5 or may include core holders of other shapes.

  DESCRIPTION OF SYMBOLS 1,21 ... Core holder, 2 ... Anisotropic conductive material tape (film adhesive), 3 ... Winding body, 4 ... Core, 4a ... Opening of core, 5 ... Rotating shaft, 6 ... Adhesion Agent layer, 7 ... base film, 8 ... opening, 9 ... hub (rotating shaft insertion part), 10 ... outer peripheral wall (outer peripheral part), 11, 22 ... connecting part, 13 ... receiving part, 15 ... projecting part ( Peripheral protrusions), 31... Core unit, 32. Anisotropic conductive material tape set (film adhesive set).

Claims (8)

In the core holder for attaching the winding core to the rotary shaft by being attached to the end of the cylindrical core on which the film-like adhesive is wound,
An outer peripheral portion that is inserted into the core and holds the core;
A rotating shaft insertion portion that has an opening through which the rotating shaft is inserted and is fitted to the rotating shaft;
A connecting portion extending radially outward from the rotating shaft insertion portion and connected to the outer peripheral portion,
The core holder according to claim 1, wherein a receiving portion that receives a protruding portion that protrudes from the outer peripheral surface of the rotating shaft is formed at a peripheral edge of the opening.   The core holder according to claim 1, wherein the receiving portion extends outward in the radial direction of the opening.   The core holder according to claim 1 or 2, wherein the receiving portion penetrates in a direction in which a center line of the opening extends.   The core holder according to any one of claims 1 to 3, further comprising a pair of receiving portions arranged to face each other in a radial direction of the opening.   The core holder according to any one of claims 1 to 4, wherein an outer peripheral protrusion is formed on the outer peripheral portion so as to protrude radially outward.   The said film-form adhesive is an anisotropic conductive material tape which has a base film and an anisotropic conductive material layer which is an adhesive bond layer provided on the said base film. The core holder according to any one of -5. A core holder according to any one of claims 1 to 6,
A cylindrical core around which a film-like adhesive is wound, and
A core unit in which the core holder is fitted into an opening at an end of the core. A core unit according to claim 7;
A film adhesive set comprising: a wound body of the film adhesive wound around the core.

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