JP5912700B2 - Reel member, adhesive film winding method and unwinding method - Google Patents

Description

  The present invention relates to a reel member around which a tape-shaped adhesive film is wound, a winding method for winding the adhesive film around the reel member, and a winding method for unwinding the adhesive film from the reel member.

  Conventionally, a mounting method has been used in which an electronic component is mounted on a substrate using an adhesive film. For example, a COG (Chip on Glass) mounting method in which an IC chip that is a liquid crystal driving circuit is mounted on a peripheral portion of a liquid crystal display panel (LCD panel) via a conductive adhesive film, or a tab serving as an interconnector in a solar cell The connection method which connects a line is mentioned.

  In the conductive adhesive film, an adhesive layer in which conductive particles are dispersed in a binder resin is formed on a base film serving as a support. Such a conductive adhesive film 50 is used in the form of a reel wound body wound around a core 53 of a reel member 51 having a reel flange 52 as shown in FIG. Reference 1).

  By the way, in order to replace the reel of the conductive adhesive film 50, a complicated operation such as stopping the one end line and drawing the adhesive film around the conveying roller is required, and a large time loss is caused in a process such as COG mounting. For this reason, various measures for simplifying the reel exchange work of the conductive adhesive film 50 and reducing the number of exchanges have been attempted. In particular, increasing the length of the conductive adhesive film 50 is effective in reducing the number of reel replacements.

  However, when the conductive adhesive film 50 is wound around the core 53 of the reel member 51 in a long length, the winding pressure is accumulated near the core 53 and tightening occurs. In addition, the reel member 51 may be stored in a refrigerator until it is actually used after being manufactured at room temperature. However, when the reel member 51 is cooled, the conductive adhesive film 50 contracts, and similarly, the winding occurs.

  As a result, in the reel wound body, the binder resin protrudes from both sides of the release substrate, and there is a possibility that the adhesiveness and conduction reliability may be impaired during actual use. Moreover, there is a possibility that a phenomenon called so-called blocking that the protruding binder resin adheres to the reel flange 52 and the conductive adhesive film 50 cannot be pulled out normally may occur.

JP 2001-171033 A JP 2010-257983 A JP 2011-58007 A

  For such a problem, a method of suppressing the protrusion by providing a peeling substrate wider than the binder resin layer (see Patent Documents 2 and 3) has also been proposed.

  However, in the method of making the release substrate wider than the binder resin layer, in addition to the complexity of manufacturing, the binder resin layer is prevented from flowing due to the winding pressure even though it can suppress protrusion and blocking. This is not possible, and there is still a possibility that the adhesiveness and conduction reliability may be impaired during actual use.

  Accordingly, the present invention provides a reel member, a film winding method, and a film unwinding method that can suppress protrusion and blocking due to winding pressure concentration even when the adhesive film is elongated or contracted by refrigeration. The purpose is to do.

In order to solve the above-described problems, a reel member according to the present invention is fitted to a winding core, reel flanges provided on both sides of the winding core, and an outer peripheral surface of the winding core. A reel member including a ring member on which a tape-like adhesive film is wound, which is rotatable with respect to the reel flange, wherein the reel flange is provided on a fixing member and a pressing pin that presses the ring member is inserted therethrough. an opening for being operated to rotate integrally with the ring member, the ring member, by the fixing member, while being restricted rotation on the outer peripheral surface of the core and is rotatable operation Is.

The method for winding an adhesive film according to the present invention includes a winding core, reel flanges provided on both sides of the winding core, and an outer peripheral surface of the winding core, and the winding core and the reel flange. In the winding method in which the adhesive film is wound around a reel member provided with a ring member around which a tape-shaped adhesive film is wound, which is rotatable with respect to the reel flange. An opening through which a pressing pin that presses the ring member is inserted is provided.Rotation of the ring member is restricted by being pressed by the pressing pin, and the rotation is integrally performed with the reel flange . While the rotation of the ring member on the outer peripheral surface of the core is restricted, the ring member is rotated.

In addition, the method for unwinding the adhesive film according to the present invention includes a winding core, reel flanges provided on both sides of the winding core, and an outer peripheral surface of the winding core, and the winding core and the reel flange. In the unwinding method of unwinding the adhesive film from a reel member provided with a ring member wound with a tape-shaped adhesive film that is rotatable with respect to the reel flange, the ring is provided on the fixing member on the reel flange. An opening through which a pressing pin that presses the member is inserted is provided, and the ring member is controlled to rotate by being pressed by the pressing pin, and is rotated together with the reel flange. While the rotation of the ring member on the outer peripheral surface of the core is restricted, the ring member is rotated.

  According to the present invention, the reel member is configured such that the core ring around which the adhesive film is wound is rotatable. Therefore, when the winding pressure is accumulated on the inner peripheral side of the film winding body, It is possible to prevent the tightening of the winding. Therefore, according to the present invention, the reel member can prevent blocking when the adhesive layer of the adhesive film protrudes or unwinds due to the occurrence of tightening.

It is a side view showing a reel member to which the present invention is applied. It is a perspective view which shows a winding core, a winding core ring, and a reel flange. It is a side view which shows the reel member with which the fixing member and the rotating apparatus were mounted | worn. It is a side view which shows the structure which clamps and rotates a core ring with the reel flange pressed by the press member. It is sectional drawing which shows the structure of an adhesive film. It is a perspective view which shows the conventional reel member.

  Hereinafter, a reel member, a film winding method, and a film unwinding method to which the present invention is applied will be described in detail with reference to the drawings. It should be noted that the present invention is not limited to the following embodiments, and various modifications can be made without departing from the scope of the present invention. Further, the drawings are schematic, and the ratio of each dimension may be different from the actual one. Specific dimensions should be determined in consideration of the following description. Moreover, it is a matter of course that portions having different dimensional relationships and ratios are included between the drawings.

  As shown in FIGS. 1 and 2, the reel member 1 to which the present invention is applied is rotatably fitted to the core 3 and the outer peripheral surface of the core 3, and the tape-like adhesive film 2 is wound thereon. A winding core ring 4 and reel flanges 5 provided on both sides of the winding core 3.

[Core / Core Ring]
The core 3 has a cylindrical shape, and an insertion port 3a through which a fixing member 10 that rotationally drives the core ring 4 is inserted is formed at the center. Moreover, the core 3 has the width | variety substantially the same as the adhesive film 2 mentioned later, or the width more than the width | variety of the adhesive film 2, and the core ring 4 is rotatably fitted by the outer peripheral surface.

  The winding ring 4 has a cylindrical shape and has substantially the same width as the adhesive film 2 or a width equal to or larger than the width of the adhesive film 2. The core ring 4 is rotatable with respect to the core 3 and the reel flange 5 by being fitted to the core 3. The core ring 4 is wound around the adhesive film 2 and is wound around the core 3 and the reel flange 5 when the reel member is stored. Even when contraction occurs, it is possible to prevent the occurrence of tightening.

  Further, the core ring 4 is restricted from rotating with respect to the core 3 by a fixing member 10 described later, and can be rotated by the fixing member 10. Specifically, when the reel member 1 is stored in a state in which the adhesive film 2 is wound, the core ring 4 is rotatable independently of the core 3 and the reel flange 5. When the adhesive film 2 is wound around or unwound from the member 1, the rotation is restricted by the fixing member 10 and is rotated according to the winding or unwinding.

[Reel flange]
Reel flanges 5 are provided on both sides of the core 3 and the core ring 4. The reel flange 5 supports the adhesive film 2 wound around the core ring 4 and is formed into a disk shape using a transparent plastic material, for example. Further, the reel flange 5 may be subjected to electrostatic treatment on the surface in contact with the adhesive film 2. Examples of the method for applying electrostatic treatment include a method of applying a compound such as polythiophene.

  The reel flange may be provided with ribs radially from the center of the surface facing the adhesive film. By providing ribs on the reel flange, the area where the binder resin protruding from the adhesive film adheres to the flange surface can be reduced, and the occurrence of blocking can be suppressed.

[Rotation restriction / rotation operation of core ring]
When the reel member 1 winds the adhesive film 2 around the core ring 4 or unwinds the adhesive film 2 wound around the core ring 4, the rotation of the core ring 4 is restricted. It is rotated according to winding and unwinding. Specifically, when the adhesive film 2 is wound or unwound, the reel member 1 is mounted on the rotating device 20 and the fixing member 10 is mounted from one side of the reel flange 5 as shown in FIG. Is done.

  The fixing member 10 restricts the rotation of the core ring 4 and rotates the core ring 4. The fixing member 10 has a disk shape larger in diameter than the core ring 4 and has a core ring on the main surface 10 a. A pressing pin 11 that presses 4 is provided. The pressing pin 11 may be erected on the main surface 10a of the fixing member 10, or is inserted through an insertion hole opened on the main surface, supported by an elastic body such as a spring, and wound by elastic force. The core ring 4 may be pressed down.

  In addition, the fixing member 10 is provided with a drive pin 12 erected at the center of the main surface 10a so as to be connected to the rotating device 20 through the insertion port 3a. The fixing member 10 is driven to rotate by receiving the driving force of the rotating device 20 via the driving pin 12. Note that the fixing member 10 may be provided with a driving mechanism separately from the rotating device 20 and may be rotationally driven via the driving mechanism.

  In the reel member 1, an opening 5 a through which the pressing pin 11 is inserted is opened in the reel flange 5. When the fixing member 10 is mounted, the reel member 1 is pressed against the core ring 4 by the pressing pin 11 inserted through the opening 5a, and its rotation is restricted and the fixing member 10 is rotated. As a result, the core ring 4 is rotated together with the reel flange 5.

  At this time, the core ring 4 may form a fitting port 4a into which the pressing pin 11 is fitted. When the pressing pin 11 is fitted, the winding of the core ring 4 is restricted, and the rotating operation is performed by rotating the fixing member 10.

  In addition, the fixing member 10 is provided with an engaging portion 12 a that engages with the insertion port 3 a of the core 3 on the drive pin 12 connected to the rotating device 20, and the core ring 4 and the core 3 are integrally rotated. You may make it do.

  The reel member 1 is not limited to the rotation of the core ring 4 and the rotation operation is performed by the pressing pin 11 of the fixing member 10. For example, the reel member 1 is not provided with the pressing pin 11 on the fixing member 10. By pressing the reel flange 5 and bringing the pair of reel flanges 5 close to each other, the core ring 4 is sandwiched between the pair of reel flanges 5 to restrict the rotation, and by rotating the pair of reel flanges 5, the core The rotation operation of the ring 4 may be performed.

  Further, as shown in FIG. 4, the reel member 1 controls the rotation and rotation of the core ring 4 by bringing the pair of reel flanges 5 close to each other by the pair of pressing members 30 provided on both sides of the reel flange 5. You may press so that it may. Also by this, the core ring 4 can be held between the pair of reel flanges 5 to restrict the rotation, and the core ring 4 can be rotated by rotating the pair of reel flanges 5.

[Operation and effect of the present invention]
In the reel member 1, the adhesive film 2 is wound by rotating the core ring 4 by the fixing member 10. The length by which the adhesive film 2 is wound around the core ring 4 is, for example, 10 m to 400 m, and preferably 10 m to 300 m. Moreover, it is preferable to perform winding of the adhesive film 2 in the temperature environment similar to the time of actual use (at the time of unwinding), for example, the temperature environment of about 15 degreeC-30 degreeC.

  The reel member 1 around which the adhesive film 2 is wound is removed from the fixing member 10 and the rotating device 20 and stored until actual use. When the reel member 1 is removed from the fixing member 10, the core ring 4 is rotatable with respect to the core 3 and the reel flange 5.

  The reel member 1 is cooled by a refrigerator or the like during storage until actual use or during transportation. The reel member 1 is stored at, for example, about −15 ° C. to 5 ° C. during storage, and is cooled to, for example, about −30 ° C. during transportation. Thereby, the adhesive film 2 wound around the reel member 1 contracts, and the winding pressure is accumulated toward the inner peripheral side of the film winding body.

  At this time, the reel member 1 has a winding ring 4 around which the adhesive film 2 is wound, so that the winding pressure is accumulated on the inner peripheral side of the film winding body. It is possible to prevent the tightening of the winding. Therefore, the reel member 1 can prevent the adhesive layer 7 of the adhesive film 2 from protruding or blocking due to the occurrence of winding tightening.

[Adhesive film]
Here, the adhesive film 2 wound around the reel member 1 will be described. As shown in FIG. 5, the adhesive film 2 includes an adhesive layer 7 and a base film 8 serving as a support that supports the adhesive layer 7.

  The adhesive layer 7 can be an anisotropic conductive film (ACF) containing conductive particles 9 in a binder (insulating adhesive composition) 7a, but is not limited thereto. 7a may be an insulating adhesive film (NCF) that does not contain the conductive particles 9.

  As the binder 7a of the adhesive film 2, for example, a normal binder containing a film-forming resin, a thermosetting resin, a latent curing agent, a silane coupling agent, or the like can be used. For the adhesive film 2, an anisotropic conductive composition in which conductive particles 9 are dispersed in the binder 7 a or an insulating adhesive composition that does not contain the conductive particles 9 in the binder 7 a is applied on the base film 8. Thus, the film is formed on the base film 8.

  The base film 8 supports the binder 7a in the form of a film. For example, PET (Poly Ethylene Terephthalate), OPP (Oriented Polypropylene), PMP (Poly-4-methlpentene-1), PTFE (Polytetrafluoroethylene), etc. are made of silicone. It is formed by applying a release agent such as.

  The film forming resin contained in the binder 7a is preferably a resin having an average molecular weight of about 10,000 to 80,000. Examples of the film forming resin include various resins such as an epoxy resin, a modified epoxy resin, a urethane resin, and a phenoxy resin. Among these, phenoxy resin is particularly preferable from the viewpoint of film formation state, connection reliability, and the like.

  The thermosetting resin is not particularly limited as long as it has fluidity at room temperature, and examples thereof include commercially available epoxy resins and acrylic resins.

  The epoxy resin is not particularly limited. For example, naphthalene type epoxy resin, biphenyl type epoxy resin, phenol novolac type epoxy resin, bisphenol type epoxy resin, stilbene type epoxy resin, triphenolmethane type epoxy resin, phenol aralkyl type epoxy resin. Naphthol type epoxy resin, dicyclopentadiene type epoxy resin, triphenylmethane type epoxy resin and the like. These may be used alone or in combination of two or more.

  There is no restriction | limiting in particular as an acrylic resin, According to the objective, an acrylic compound, liquid acrylate, etc. can be selected suitably. For example, methyl acrylate, ethyl acrylate, isopropyl acrylate, isobutyl acrylate, epoxy acrylate, ethylene glycol diacrylate, diethylene glycol diacrylate, trimethylolpropane triacrylate, dimethylol tricyclodecane diacrylate, tetramethylene glycol tetraacrylate, 2-hydroxy- 1,3-diacryloxypropane, 2,2-bis [4- (acryloxymethoxy) phenyl] propane, 2,2-bis [4- (acryloxyethoxy) phenyl] propane, dicyclopentenyl acrylate, tricyclo Examples include decanyl acrylate, tris (acryloxyethyl) isocyanurate, urethane acrylate, and epoxy acrylate. In addition, what made acrylate the methacrylate can also be used. These may be used individually by 1 type and may use 2 or more types together.

  The latent curing agent is not particularly limited, and examples thereof include various curing agents such as a heat curing type and a UV curing type. The latent curing agent does not normally react, but is activated by various triggers selected according to applications such as heat, light, and pressure, and starts the reaction. The activation method of the thermally activated latent curing agent includes a method of generating active species (cations and anions) by a dissociation reaction by heating, and the like. There are a method of dissolving and dissolving and starting a curing reaction, a method of starting a curing reaction by eluting a molecular sieve encapsulated type curing agent at a high temperature, an elution and curing method using microcapsules, and the like. Thermally active latent curing agents include imidazole, hydrazide, boron trifluoride-amine complexes, sulfonium salts, amine imides, polyamine salts, dicyandiamide, etc., and modified products thereof. The above mixture may be sufficient. Among these, a microcapsule type imidazole-based latent curing agent is preferable.

  Although it does not specifically limit as a silane coupling agent, For example, an epoxy type, an amino type, a mercapto sulfide type, a ureido type etc. can be mentioned. By adding the silane coupling agent, the adhesion at the interface between the organic material and the inorganic material is improved.

  Examples of the conductive particles 9 include any known conductive particles used in anisotropic conductive films. Examples of the conductive particles 9 include particles of various metals and metal alloys such as nickel, iron, copper, aluminum, tin, lead, chromium, cobalt, silver, gold, metal oxide, carbon, graphite, glass, ceramic, Examples thereof include those in which the surface of particles such as plastic is coated with metal, or those in which the surface of these particles is further coated with an insulating thin film. In the case where the surface of the resin particle is coated with metal, examples of the resin particle include an epoxy resin, a phenol resin, an acrylic resin, an acrylonitrile / styrene (AS) resin, a benzoguanamine resin, a divinylbenzene resin, a styrene resin, and the like. Can be mentioned.

  In the above description, the adhesive film 2 in which the adhesive layer 7 made of ACF or NCF is formed on the base film 8 is used. However, the present invention is not limited to this example. For example, the adhesive film 2 may be an anisotropic conductive film in which the adhesive layer 7 is configured by laminating ACF and NCF.

  Moreover, the adhesive film 2 is good also as a structure which provides a cover film also in the surface side on the opposite side to the surface where the base film 8 of the adhesive film 2 was laminated | stacked. For example, as a base film or a cover film, it is good also as an adhesive film with copper foil using the copper foil for electrically connecting the electrodes of a plurality of photovoltaic cells.

  Next, examples of the present invention will be described. In this embodiment, a reel member 1 to which the present invention is applied and a conventional reel member to which a winding core and a reel flange are fixed are prepared, and an adhesive film is wound around each, and TCT (Thermal Cycle Test) is performed. After the measurement, the amount of protrusion of the adhesive layer was measured.

  An adhesive film wound around each reel member is an anisotropic conductive film (CP6920F3) in which a 50 μm thick PET (Poly Ethylene Terephthalate) is used as a base film and an adhesive layer in which conductive particles are dispersed is applied in a thickness of 45 μm. : Sony Chemical & Information Device Co., Ltd.). The adhesive film is 1.0 mm wide and 100 m long.

  In Example 1, the adhesive film was wound around the reel member 1 in a temperature environment of 25 ° C.

  In Comparative Example 1, an adhesive film was wound around a conventional reel member in which a winding core and a reel flange were fixed in a temperature environment of 25 ° C.

  The reel member according to Example 1 and Comparative Example 1 was subjected to 10 cycles of −30 ° C./24 hr to 30 ° C./24 hr, and the amount of protrusion of the adhesive layer was measured. The amount of protrusion was determined by observing the side surface of the reel flange with a microscope and confirming how many rounds the adhesive layer protruded from the core ring (Example 1) or the core (Comparative Example 1). The results are shown in Table 1.

  As shown in Table 1, in Example 1, the amount of protrusion was zero, whereas in Comparative Example 1, protrusion was confirmed up to three.

  When the adhesive film was actually pulled out, in Example 1, it was able to be pulled out normally without blocking, whereas in Comparative Example 1, blocking was generated and it was not possible to pull it out normally.

The coefficient of thermal expansion of PET is 2 × 10 ⁻⁵ / ° C., and is calculated to expand and contract by 120 mm by TCT in this example. That is, in the reel member according to Example 1, it is assumed that the core ring is rotated by 120 mm. In addition, since the degree of expansion and contraction of the base film changes according to the material and the storage temperature environment, and the winding pressure applied to the wound body of the adhesive film also changes, the rotation distance of the core ring also changes accordingly. It will be.

1 reel member, 2 adhesive film, 3 core, 3a insertion port, 4 core ring, 4a fitting port, 5 reel flange, 5a opening, 7 adhesive layer, 7a binder, 8 base film, 9 conductive particles, DESCRIPTION OF SYMBOLS 10 Fixing member, 10a Main surface, 11 Press pin, 12 Drive pin, 12a Engagement part

Claims (11)

Winding core,
Reel flanges provided on both sides of the core;
In a reel member including a ring member that is fitted to the outer peripheral surface of the core and is rotatable with respect to the core and the reel flange, and on which a tape-like adhesive film is wound.
The reel flange is provided with an opening through which a pressing pin that is provided on a fixing member and presses the ring member is inserted, and is rotated together with the ring member.
The ring member, by the fixing member, while being restricted rotation on the outer peripheral surface of the core, rotatable operation and has been that the reel member. The ring member, the reel member according to claim 1, wherein the fitting portion in which the pressing pin is fitted is formed.   2. The reel member according to claim 1, wherein the ring member is clamped by the reel flange and can be rotated when the reel flange is pressed by the fixing member. The winding core, the fixing member is engaged, the reel member according to any one of claims 1 to 3, which is rotatable integrally with the ring member. The adhesive film includes a base film and a binder resin layer supported by the base film,
The binder resin layer in the conductive particles electrically conductive adhesive containing film, or any of the binder according insulating adhesive film conductive particles are not contained in the resin layer is wound to claim 1 to claim 4 2. A reel member according to claim 1. A tape-like adhesive film, fitted to the outer periphery of the winding core, reel flanges provided on both sides of the winding core, and rotatable with respect to the winding core and the reel flange. In a winding method of winding the adhesive film on a reel member including a ring member to be wound,
The reel flange is provided with an opening through which a pressing pin that is provided on the fixing member and presses the ring member is inserted.
The ring member is restricted from rotating by being pressed by the pressing pin, and is rotated together with the reel flange,
A method for winding an adhesive film in which rotation of the ring member on the outer peripheral surface of the core is restricted by the fixing member and the ring member is rotated. The adhesive film according to claim 6 , wherein the ring member is formed with a fitting portion into which the pressing pin is fitted, and the rotation is regulated and rotated by fitting the pressing pin into the fitting portion. Winding method. The method for winding an adhesive film according to any one of claims 6 to 7 , wherein the winding core is rotated integrally with the ring member by engaging the fixing member. A tape-like adhesive film, fitted to the outer periphery of the winding core, reel flanges provided on both sides of the winding core, and rotatable with respect to the winding core and the reel flange. In the unwinding method of unwinding the adhesive film from a reel member provided with a wound ring member,
The reel flange is provided with an opening through which a pressing pin that is provided on the fixing member and presses the ring member is inserted.
The ring member is restricted from rotating by being pressed by the pressing pin, and is rotated together with the reel flange,
A method for unwinding an adhesive film in which rotation of the ring member on the outer peripheral surface of the core is restricted by the fixing member, and the ring member is rotated. The adhesive film according to claim 9 , wherein the ring member is formed with a fitting portion into which the pressing pin is fitted, and the rotation is regulated and rotated by fitting the pressing pin into the fitting portion. Unwinding method. The winding core, the fixing member is engaged, unwinding process of the adhesive film according to any one of claims 9 to 10 which is rotated integrally with the ring member.

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