TW201348109A - Reel member - Google Patents

Abstract

Provided is a reel member with which adhesive film elongation is achieved, extrusions and blocking due to winding pressure concentration are inhibited, and winding deviation is inhibited. The reel member is provided with: a winding core (3); an annular elastic body (4) which is fitted to the outer peripheral surface of the winding core (3), and around which a tape-like adhesive film (2) is wound; and reel flanges (5) provided either side of the winding core (3). The elastic member (4) has a Shore A hardness which is greater than 30 DEG but less than 90 DEG .

Description

Reel member

BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to a reel member wound with a strip-shaped adhesive film, and more particularly to a reel member in which an elastic body is disposed on a winding core and an adhesive film is wound around the elastic body.

The present application is based on Japanese Patent Application No. 2012-87757, filed on Jan.

Since the beginning, a method of using an adhesive film to mount an electronic component on a substrate has been used. For example, a COG (Chip on Glass) mounting method for forming an IC wafer as a liquid crystal driving circuit via a conductive adhesive film on a peripheral portion of a liquid crystal display panel (LCD panel), or connecting the solar cell elements to the inside The connection method of the TAB line of the inter connector.

The adhesive layer in which the conductive particles are dispersed in the conductive film-based adhesive resin is formed on the base film which serves as a support. For example, as shown in FIG. 11, the conductive adhesive film 50 is used in the shape of a reel package wound around a winding core 53 of a reel member 51 having a reel flange 52 (for example, refer to Patent Document 1). ).

However, in order to perform the coil exchange of the conductive adhesive film 50, it is necessary to stop the one end line and the subsequent film is wound around the transfer roller, thereby forming a large time loss in the COG assembly and the like. Therefore, various methods for simplifying or reducing the number of exchanges of the reel exchange operation of the conductive adhesive film 50 have been attempted. Wherein, the strip of the conductive adhesive film 50 is wound The number of disk swaps is reduced.

However, by winding the conductive adhesive film 50 on the winding core 53 of the reel member 51 in a long strip, the winding is accumulated in the vicinity of the winding core 53 to cause the winding. Thereby, the reel package has the following defects: the adhesive resin overflows from both sides of the base film, and impairs the adhesion or the conduction reliability in actual use. Further, there is a phenomenon in which the overflow adhesive resin adheres to the reel flange 52 and the so-called adhesion in which the conductive adhesive film 50 cannot be normally taken out. In particular, in the conductive adhesive film having a low adhesiveness of the binder resin at normal temperature, the decrease tends to occur remarkably.

[Patent Document 1] Japanese Patent Laid-Open Publication No. 2001-171033

[Patent Document 2] Japanese Patent Laid-Open Publication No. 2010-257983

[Patent Document 3] Japanese Patent Laid-Open Publication No. 2011-58007

In view of such a problem, it is also proposed to suppress the overflow by providing the base film more widely than the adhesive layer (refer to Patent Documents 2 and 3), or to weaken the winding by the outer peripheral side of the core side. Then, the tension of the film prevents the curl from being concentrated on the core portion (so-called taper tension).

However, in the method of making the base film wider than the adhesive layer, the manufacturing is complicated, and even if the overflow or adhesion can be suppressed, the adhesive layer cannot be prevented from flowing due to the crimping, thereby impairing the adhesion or conduction in actual use. The flaws in reliability remain.

Further, when the taper tension is applied, as shown in Fig. 12, the winding or loosening due to insufficient tension occurs on the outer peripheral side of the winding core, and as shown by a broken line in Fig. 13, other problems such as the following occur: It becomes easy to cause the electrical conductivity to peel off the film 50 from the package, and the like.

Accordingly, it is an object of the present invention to provide a reel member which can realize the lamination of the film and suppress the overflow or adhesion due to the concentration of the crimp and also prevent the curling and the like.

In order to solve the above problems, the reel member of the present invention comprises: a winding core; an annular elastic body fitted to the outer peripheral surface of the winding core and wound with a strip-shaped adhesive film; and a reel flange, which is provided On both sides of the above-mentioned winding core; and the above-mentioned elastomer has a Shore A hardness of more than 30° and less than 90°.

According to the present invention, the elastic system can be freely deformed by being wound around the film and elastically deformed, and can absorb the curl and prevent overflow or adhesion even when the film is wound on the film of the film.

1‧‧‧Reel components

2‧‧‧Next film

3‧‧‧Volume core

3a‧‧‧Inlet

4‧‧‧Flexible ring

5‧‧‧Reel flange

5a‧‧‧Reel flange

5b‧‧‧Reel flange

10‧‧‧Retreat space

11‧‧‧ Groove

11a‧‧‧ Groove

11b‧‧‧ Groove

12‧‧‧ protruding ribs

12a‧‧‧ protruding ribs

12b‧‧‧ protruding ribs

13‧‧‧Circular ribs

20‧‧‧ adhesive layer

20a‧‧‧Binder

21‧‧‧ Basement membrane

22‧‧‧Electrical particles

50‧‧‧ Conductive adhesive film

51‧‧‧Reel components

52‧‧‧Reel flange

53‧‧‧Volume core

A‧‧‧ Height of the ribs on the flange side of a reel

B‧‧‧Width of elastic ring

C‧‧‧ Height of the ribs on the flange side of the other reel

D‧‧‧The thickness of the elastic ring

G‧‧‧ pull gauge

W‧‧‧ hammer

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a side view showing a reel member to which the present invention is applied.

Fig. 2 is a cross-sectional view showing the reel member in which the winding state of the film collapses.

Figure 3 is a side elevational view showing the reel member to which the present invention is applied.

Figure 4 is a side elevational view showing another reel member to which the present invention is applied.

Figure 5 is a side elevational view showing another reel member to which the present invention is applied.

Figure 6 is a side elevational view showing another reel member to which the present invention is applied.

Figure 7 is a side elevational view showing another reel member to which the present invention is applied.

Fig. 8 is a cross-sectional view showing the structure of an adhesive film.

Fig. 9 is a perspective view showing a measuring method of overflow in the embodiment.

Fig. 10 is a side view showing a method of measuring the tightness of the load in the embodiment.

Figure 11 is a perspective view showing a prior reel member.

Figure 12 is a side view showing a state in which a roll or a looseness is generated in a previous reel member.

Figure 13 is a side view showing a state in which a tight roll is formed in the previous reel member or the film is peeled off from the package.

Hereinafter, a reel member to which the present invention is applied will be described in detail with reference to the drawings. It is a matter of course that the present invention is not limited to the embodiments described below, and various modifications can be made without departing from the spirit and scope of the invention. Further, the pattern is model, and the ratio of each size may be different from the actual one. The specific dimensions and the like should be judged by referring to the following description. Moreover, of course, the drawings also include portions in which the relationship or ratio of the dimensions is different from each other.

As shown in FIG. 1, the reel member 1 to which the present invention is applied includes: a winding core 3; an elastic ring 4 which is fitted to the outer peripheral surface of the winding core 3 and is wound with a strip-shaped adhesive film 2; and a reel convex The edge 5 is disposed on both sides of the core 3.

[core / elastic ring]

The winding core 3 has a cylindrical shape, and an insertion opening 3a through which a rotating device (not shown) that rotationally drives the elastic ring 4 is inserted is formed in a central portion. Further, the winding core 3 has a width substantially equal to or shorter than the width of the film 2, and the elastic ring 4 is fitted to the outer peripheral surface to be integrated.

The elastic ring 4 is made of an elastic body such as rubber and has a cylindrical shape and has a width substantially equal to or larger than the width of the film 2 . Further, the elastic ring 4 is integrated with the winding core 3 and the reel flange 5 by being fitted to the winding core 3. The elastic ring 4 is freely deformable by winding the adhesive film 2, and absorbs the crimp and prevents overflow or adhesion even when the wound body of the film 2 is wound tightly. Further, the reel member 1 can be wound around the film 2 with a large tension by providing the elastic ring 4.

The elastic ring 4 has a hardness of 30° to 90° in terms of Shore A hardness. In the reel member 1, if the hardness of the elastic ring 4 is greater than 90° in Shore A hardness, it becomes too hard, and cannot be formed into a cylindrical shape due to the ring diameter, and is further formed even in the case of moldability. When the film 2 is wound, the crimping is not absorbed and there is a risk of overflow or adhesion. Further, in the reel member 1, if the hardness of the elastic ring 4 is less than 30° in Shore A hardness, the elastic ring 4 is crushed by the crimping at the time of winding of the film 2, and then the film 2 is pressed. The package body is liable to be deformed, so that the tightness of the load is reduced.

Here, the so-called tight load strength refers to the rotation of the core 3 and the elastic ring 4. In the state of being restricted, the maximum load applied when the wound film 2 is taken out. Usually, in the previous reel member in which the winding core is fixed to the flange of the reel, in the state where the rotation of the winding core is restricted, if the wound film is forcibly extracted, the film is wound up. A crimp is generated in the body, and the crimping is accumulated toward the peripheral side of the package body. Therefore, although the load applied to the extraction of the film is increased, it is sharply reduced at the beginning of a certain point, and can be extracted with a low load. The reason for this is that, as shown in FIG. 2, the reel flange 52 does not support the film wrap and is bent to the left and right due to an increase in the winding pressure applied to the film roll, whereby the winding state collapses. The accumulated coiling pressure is released, and in turn, the film 50 is not normally overlapped and the supporting coiling pressure is no longer accumulated. In the film roll body in which the winding is accumulated until the winding state collapses, the adhesive resin is overflowed or adhered, and the film is peeled off, and the film 2 cannot be normally wound up.

The tight-loading strength of the reel member refers to the maximum load strength at which the normal winding state can be maintained when a tight load is applied to the wound body of the film, and the film-loaded body exceeds the load. When the load is applied with strength, the winding state collapses, so that it can be taken out at a low load. In other words, the tightness of the load is such that the resistance to the winding of the wound film of the film can be maintained and the pressure is supported.

Further, in the elastic ring 4 having a Shore A hardness of more than 90°, the winding due to the winding is not absorbed, and the winding state collapses due to the winding of the package. Further, in the elastic ring 4 in which the Shore A hardness is less than 30°, the winding is likely to be deformed, the winding state cannot be maintained, the roll deformation occurs, and the winding load strength is lowered. Therefore, the elastic ring 4 preferably has a hardness of 30° to 90° in terms of Shore A hardness.

[Shore A hardness is 80° or more]

Further, the elastic ring 4 is applied to the wound film 2 and the elastic ring 4 in a state where the rotation of the winding core 3 and the elastic ring 4 is restricted by 80° or more in Shore A hardness. The maximum load, that is, the tight load strength is set to 5 N or more.

The elastic ring 4 is used, for example, butyl rubber, nitrile rubber, NE (neoprene) It is formed by rubber such as rubber, neoprene or urethane. Moreover, the winding quality of the adhesive film 2 is improved by using a material having a high rebound elasticity. Examples of the material of the elastic ring 4 include urethane, NR, butadiene rubber, isoprene rubber, and polyoxymethylene rubber.

Further, when the elastic ring 4 is used in the case of using a material such as a foam which is wound with a volume shrinkage, the desired hardness cannot be obtained, and the tight film of the adhesive film 2 is easily deformed, so that the roll cannot be maintained. Around the state. Therefore, the elastic ring 4 is preferably made of a material having a desired hardness such as rubber. For example, an elastic material such as an olefin-based foam or a foamed urethane copolymer has a modulus of elasticity (Young's modulus) of 0.005 to 0.06 GPa, whereas a rubber system is numerically dominant. , is 0.01~0.1GPa.

Further, the elastic ring 4 can be appropriately adjusted in thickness according to the hardness of the rubber or the length of the film 2 to be wound. For example, when the length of the film 2 after winding is 200 to 500 m, the thickness is preferably 0.5 to 10 mm. range.

[reel flange]

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

[Retreat space]

A retracting space 10 is provided in the reel flange 5, and the retreating space is such that one portion of the elastic ring 4 is retracted when the elastic ring 4 is subjected to compression deformation due to the accumulated crimping. The elastic ring 4 is formed of a material such as rubber. When it is compressed by applying a crimp, the crimp is absorbed by not deforming the volume. The retreat space 10 is a space in which one of the deformed elastic rings 4 is retracted, for example, as shown in FIG. 3, and is recessed on the inner circumferential surface of the reel flange 5.

The retreat space 10 is provided at a position facing the side surface of the elastic ring 4 on the inner circumferential surface of the reel flange 5. For example, as shown in FIG. 3, the retreat space 10 is attached to the pair of left and right reel flanges 5a, The annular groove 11 of the same shape is formed at a position facing the side of the elastic ring 4 of 5b. In the retreat space 10, the depth of the groove 11a on the side of one reel flange 5a is set to A, the depth of the groove 11b on the side of the other reel flange 5b is set to C, and the flanges of the two reels are set. The widths of the grooves 11a, 11b of 5a, 5b are set to D, and the width D is the same as the thickness of the elastic ring 4.

At this time, in the evacuation space 10, when the width of the elastic ring 4 is B, the cross-sectional area of the retreat space 10 (A × D + C × D) / the cross-sectional area of the elastic ring 4 (B × D) is preferably set to 3.5~20%. If the ratio of the cross-sectional area of the retracting space 10 and the elastic ring 4 is less than 3.5%, that is, the retracting space 10 is excessively narrow, the elastic ring 4 undergoes compression deformation when the film 2 is wound, and cannot be retracted, and cannot be retracted. . Moreover, when the ratio of the cross-sectional area of the evacuation space 10 and the elastic ring 4 is more than 20%, the compression deformation is unstable, the function as an elastic body is lowered, or a problem such as deformation of the film 2 is caused.

Moreover, it is preferable that the evacuation space 10 is set to be in contact with the elastic ring 4 when the elastic ring 4 is deformed to the maximum extent. Thereby, the retreat space 10 can support the elastically deformed elastic ring 4 and stably absorb the crimp.

[Other retreat spaces: ribs]

Further, the retreat space 10 is formed by forming the recess 11 on the inner circumferential surface of the reel flange 5, or as shown in FIG. 4, by the inner peripheral surface of the reel flange 5 being radially A plurality of rib ribs 12 are provided, and a gap is provided between the convex rib 12 and the elastic ring 4, and the distance between the elastic ring 4 and the reel flange 5 or the distance between the elastic ring 4 and the convex rib 12 is adjusted. And formed.

In the case shown in FIG. 4, by providing a gap between the elastic ring 4 and the reel flange 5 and the convex rib 12, the retreat space 10 is formed between the elastic ring 4 and the convex rib 12 and Between the elastic ring 4 and the reel flange 5.

Further, as shown in FIG. 5, the evacuation space 10 can be formed by bringing the convex rib 12 into contact with the elastic ring 4 and adjusting the height of the convex rib 12. In this case, the retreat space 10 becomes between the elastic ring 4 and the reel flange 5.

[Other retreat spaces: ribs]

Further, the retreat space 10 is formed by forming the recess 11 on the inner circumferential surface of the reel flange 5, and may also be radially formed by the inner circumferential surface of the reel flange 5 as shown in FIG. A plurality of rib ribs 12 are provided, and the end portion on the inner circumferential side of the rib rib 12 is formed at a boundary position facing the position of the elastic ring 4.

That is, the reel flange 5 is provided to face the rib 12 and the adhesive film 2 wound around the elastic ring 4, and is not disposed at a position facing the elastic ring 4. Thereby, the reel flange 5 can support the side surface of the package body of the film 2 by the rib rib 12, and reduce the contact area with the adhesive resin to suppress the adhesion.

At this time, in the retreat space 10, the height of the rib 12a on the side of the reel flange 5a is set to A, and the height of the rib 12b on the side of the other reel flange 5b is set to C. When the thickness of the elastic ring 4 is D and the width of the elastic ring 4 is B, the cross-sectional area of the retreat space 10 (A×D+C×D)/the cross-sectional area of the elastic ring 4 (B×D) is preferably Set to 3.5~20%.

[Other retreat spaces: ring ribs]

Further, as shown in FIG. 7, the evacuation space 10 may be formed by projecting the annular rib 13 on the inner circumferential surface of the reel flange 5. The inner side of the annular rib 13 is a retreating space of the elastic ring 4 that is subjected to compression deformation, and is formed concentrically with the reel flange 5, and is in contact with the side surface on the outer peripheral side of the elastic ring 4.

[Next film]

Here, the adhesive film 2 wound on the reel member 1 will be described. As shown in FIG. 8, the adhesive film 2 includes an adhesive layer 20 and a base film 21 which serves as a support for supporting the adhesive layer 20.

The adhesive layer 20 may be an anisotropic conductive film (ACF: Anisotropic Conductive Film) containing the conductive particles 22 in the adhesive (insulating adhesive composition) 20a, but is not limited thereto, and may be a binder. Insulating adhesive film (NCF: Non-Conductive Film) containing no conductive particles 22 in 20a.

Next, as the adhesive 20a of the film 2, for example, a usual binder containing a film-forming resin, a thermosetting resin, a latent curing agent, a decane coupling agent, or the like can be used. Next, the film 2 is applied onto the base film 21 by an anisotropic conductive composition in which the conductive particles 22 are dispersed in the adhesive 20a or an insulating adhesive composition containing no conductive particles 22 in the adhesive 20a. It is formed on the base film 21.

The base film 21 is a film-like support for the adhesive 20a, for example, by PET (Poly Ethylene Terephthalate, polyethylene terephthalate), OPP (Oriented Polypropylene), PMP (Poly-4). -methlpentene-1, poly-4-methylpentene-1), PTFE (polytetrafluoroethylene) or the like is formed by coating a release agent such as polyfluorene oxide.

The film-forming resin contained in the binder 20a 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 deformed epoxy resin, an urethane resin, and a phenoxy resin. Among them, a phenoxy resin is particularly preferable from the viewpoints of film formation state, connection reliability, and the like.

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

The epoxy resin is not particularly limited, and examples thereof include a naphthalene type epoxy resin, a biphenyl type epoxy resin, a phenol novolak type epoxy resin, a bisphenol type epoxy resin, a fluorene type epoxy resin, and the like. Phenol methane 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.

The acrylic resin is not particularly limited, and an acrylic compound, a liquid acrylate or the like can be appropriately selected depending on the purpose. For example, methyl acrylate, ethyl acrylate, isopropyl acrylate, isobutyl acrylate, epoxy acrylate, ethylene glycol diacrylate, diethylene glycol diacrylate, trimethylolpropane triacrylic acid Ester, dimethylol tricyclodecane dipropane Ethyl ester, 1,4-butanediol tetraacrylate, 2-hydroxy-1,3-dipropenyloxypropane, 2,2-bis[4-(acryloxymethoxy)phenyl] Propane, 2,2-bis[4-(acryloxyethoxy)phenyl]propane, dicyclopentenyl acrylate, tricyclodecyl acrylate, tris(acryloxy)ethyl isocyanurate, Ethyl acrylate acrylate, epoxy acrylate, and the like. Further, an acrylate may be used as the methacrylate. These may be used alone or in combination of two or more.

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 hardener generally does not react, and is activated and started by various triggers selected according to the use of heat, light, pressure, and the like. In the activation method of the thermally active latent curing agent, there is a method of generating an active material (cation or anion) in a dissociation reaction by heating or the like; stably dispersing in an epoxy resin at room temperature and at a high temperature A method in which an epoxy resin is dissolved and melted, and a hardening reaction is started; a method in which a molecular sieve-filled hardener is dissolved at a high temperature to start a hardening reaction; and a method of eluting and hardening a microcapsule is used. Examples of the thermally active latent curing agent include imidazole, anthraquinone, boron trifluoride-amine complex, sulfonium salt, amine sulfimine, polyamine salt, dicyandiamide, etc., or the like. These may be used singly or in a mixture of two or more kinds. Among them, a microcapsule type imidazole-based latent curing agent is preferred.

The decane coupling agent is not particularly limited, and examples thereof include an epoxy group, an amine group, a mercapto group, a sulfur group, and a guanidine type. The adhesion at the interface between the organic material and the inorganic material is improved by adding a decane coupling agent.

The conductive particles 22 include any of the known conductive particles used in the anisotropic conductive film. Examples of the conductive particles 22 include particles of various metals or metal alloys such as nickel, iron, copper, aluminum, tin, lead, chromium, cobalt, silver, gold, metal oxides, carbon, graphite, and glass. A surface of a particle such as ceramics or plastic is coated with a metal; or an insulating film is further coated on the surface of the particles. In the case where a metal is coated on the surface of the resin particle, examples of the resin particle include an epoxy resin, a phenol resin, and propylene. Particles such as an acid resin, an acrylonitrile-styrene (AS) resin, a benzoquinone resin, a divinylbenzene resin, or a styrene resin.

In the above description, the adhesive film 2 formed by laminating the adhesive film 2 made of ACF or NCF on the base film 21 is used, but the invention is not limited thereto. For example, the film laminate may be an anisotropic conductive film of two or more layers in which ACF and NCF are laminated.

Further, the film 2 may be formed to have a cover film on the side opposite to the surface on which the base film 21 is laminated on the film 2 . Further, for example, a copper foil-attached film for electrically connecting electrodes of a plurality of solar cell elements may be used.

[Example 1]

Next, an embodiment of the present invention will be described. In the present embodiment, a reel member of a type in which the elastic ring 4 fitted to the winding core 3 is changed is prepared, and an adhesive film having a length of 300 m is wound around each of the reel members. Then, it is confirmed whether or not the adhesive resin is overflowed or adhered when the roll core and the elastic ring are rotated while the roll core and the elastic ring are rotated. In addition, the tightness load strength at the time of extracting the adhesive film in a state where the winding of the winding core and the elastic ring of each of the reel members was restricted, and the presence or absence of the overflow after the measurement were evaluated.

As shown in FIG. 3, the reel member used in each of the examples and the comparative examples is provided with a retreat space 10 of the elastic ring 4 constituted by the recess 11 on the inner circumferential surface of the reel flange 5. Further, the adhesive film wound around each of the reel members was an ACF manufactured by Sony Chemical & Information Device Co., Ltd. Then, the thickness of the adhesive layer of the film is 10 to 25 μm, and the lowest melt viscosity of the adhesive is 3.0×10 ^-4 Pa. S.

In Example 1, as the material of the elastic ring, a butyl rubber having a Shore A hardness of 40° was used. Further, the thickness D of the elastic ring is 2 mm, and the ratio of the cross-sectional area of the retracting space 10 and the elastic ring 4 is: the cross-sectional area of the retreating space 10 (A × D + C × D) / the cross-sectional area of the elastic ring 4 (B × D) is 5% . Further, the tension at the time of winding the film was 0.75 N.

In Example 2, as a material of the elastic ring, a Shore A hardness of 80° was used. The same conditions as in Example 1 were carried out except for the butyl rubber.

In the same manner as in Example 1, except that the nitrile rubber having a Shore A hardness of 40° was used as the material of the elastic ring.

In the same manner as in Example 1, except that the nitrile rubber having a Shore A hardness of 80° was used as the material of the elastic ring.

In the same manner as in Example 1, except that NE having a Shore A hardness of 40° was used as the material of the elastic ring.

In the same manner as in Example 1, except that NE having a Shore A hardness of 80° was used as the material of the elastic ring.

In the same manner as in Example 1, except that the urethane having a Shore A hardness of 40° was used as the material of the elastic ring.

In the same manner as in Example 1, except that the urethane having a Shore A hardness of 80° was used as the material of the elastic ring.

In Comparative Example 1, the same conditions as in Example 1 were carried out except that the film was wound around the previous reel member in which the elastic ring 4 was not provided.

In Comparative Example 2, the same conditions as in Example 1 were used as the material of the elastic ring, except that butyl rubber having a Shore A hardness of 30° was used.

In Comparative Example 3, the same conditions as in Example 1 were used as the material of the elastic ring, except that butyl rubber having a Shore A hardness of 90° was used.

With regard to the overflow or adhesion of the adhesive resin when the reel member of the embodiment and the comparative example is rolled out as usual, as shown in FIG. 9, the respective reel members are mounted on the measuring jig. The film was taken out and placed at a normal temperature for 24 hours while hanging a hammer W of 50 g at the front end. Then, the side surface of the reel flange was observed with an optical microscope to confirm the presence or absence of overflow. Then, the film is rolled out as usual, and the presence or absence of adhesion is confirmed. Then, the case where the overflow is not observed is set to ◎, and the case where the overflow is observed but there is no problem in practical use is set as ○, the case where the adhesion is caused and the case is not normally rolled out is set to ×.

Further, in the measurement of the tightness load strength of the examples and the comparative examples, as shown in Fig. 10, each of the reel members is mounted on the measuring jig, and the pressure gauge G is pressed in a state where the rotation of the winding core and the elastic ring is restricted. The film was taken out and the peak of the load was measured. Moreover, the side surface of the reel flange was observed with an optical microscope, and the presence or absence of overflow was confirmed. The measurement results are shown in Table 1.

As shown in Table 1, in the reel member of each of the examples, no adhesion occurred at the extent that the degree of practically problem-free overflow was observed. Further, the tightness of the winding load was good, and it was 1 N or more, and no overflow which could not be used was observed even after the film was taken out.

Further, in Examples 2, 4, 6, and 8 in which the Shore A hardness of the elastic ring was set to 80° in each Example, the winding load strength was 5 N or more, and good results were obtained.

On the other hand, in Comparative Example 1 in which the elastic ring was not provided, when the film was wound up as usual, the adhesion due to the overflow occurred, which was difficult to be practical. Further, in Comparative Example 2 in which an elastic ring having a Shore A hardness of 30° was used, the tightness of the winding force at the time of the extraction of the film was as low as 0.5 N, and it was difficult to be practical after overflowing after the extraction. Further, in Comparative Example 3 in which an elastic ring having a Shore A hardness of 90° was used, when the film was wound up as usual, adhesion due to overflow occurred, which made it difficult to be practical.

From this, it is understood that the material of the elastic ring is preferably set to have a Shore A hardness of more than 30° and less than 90°.

[Embodiment 2]

Further, as a second embodiment, a reel member in which the retreat space 10 having the same shape as that of the first embodiment is provided, and a cross-sectional area ratio of the retreat space 10 and the elastic ring 4: a cross-sectional area of the retreat space 10 (A × D + C) ×D)/The elastic ring 4 cross-sectional area (B × D) is set to 2% of the reel member. Then, a film having a length of 300 m was wound around the reel member, and the presence or absence of the overflow or adhesion of the adhesive resin when the reel member was wound up as usual was examined. Moreover, the tightness load intensity at the time of extracting the adhesive film in the state which restricts rotation of each reel member was measured, and the presence or absence of the overflow after the measurement was evaluated.

In Example 9, as the material of the elastic ring, a butyl rubber having a Shore A hardness of 40° was used. Further, the thickness D of the elastic ring was 2 mm, and the tension at the time of winding of the film was 0.75 N.

In Example 10, as the material of the elastic ring, a butyl rubber having a Shore A hardness of 80° was used. Further, the thickness D of the elastic ring was 2 mm, and the tension at the time of winding of the film was 0.75 N.

The observation of the overflow or adhesion of the adhesive resin when the respective reel members are rolled out of the film, or the strength of the winding load when the film is taken out while restricting the rotation of each of the reel members The measurement and evaluation of the overflow of the film and the extraction of the film The legal system is the same as in the first embodiment. The measurement results are shown in Table 2.

As shown in Table 2, in Example 9 and Example 10, no adhesion occurred at the extent that the degree of overflow which was practically problem-free was observed. Further, the tightness of the winding load was good, and it was 1 N or more, and no overflow which could not be used was observed even after the film was taken out.

[Example 3]

Further, as a third embodiment, a reel member in which the retreat space 10 is not provided is prepared. That is, the reel member of the third embodiment is a cross-sectional area ratio of the retreat space 10 and the elastic ring 4: the cross-sectional area of the retreat space 10 (A × D + C × D) / the cross-sectional area of the elastic ring 4 (B × D) is set to 0%. Then, a film having a length of 300 m was wound around the reel member, and the presence or absence of the overflow or adhesion of the adhesive resin when the reel member was wound up as usual was examined. Moreover, the tightness load intensity at the time of extracting the adhesive film in the state which restricts rotation of each reel member was measured, and the presence or absence of the overflow after the measurement was evaluated.

In Comparative Example 4, as the material of the elastic ring, a butyl rubber having a Shore A hardness of 40° was used. Further, the thickness D of the elastic ring was 2 mm, and the tension at the time of winding of the film was 0.75 N.

In Comparative Example 5, as the material of the elastic ring, a butyl rubber having a Shore A hardness of 80° was used. Further, the thickness D of the elastic ring was 2 mm, and the tension at the time of winding of the film was 0.75 N.

The observation of the overflow or adhesion of the adhesive resin when the respective reel members are rolled out of the film as usual, or the extraction of the reel members is restricted. The measurement of the tightly wound load strength at the time of film formation and the observation and evaluation method of the overflow at the time of film extraction were the same as in Example 1. The measurement results are shown in Table 3.

As shown in Table 3, in Comparative Example 4 and Comparative Example 5, overflow occurred when the film was wound up as usual, and it was difficult to use it. This is because the elastic ring is not sufficiently compressed because the retracting space at the time of compression deformation of the elastic ring is not provided, and the winding pressure generated in the wound body of the film can not be absorbed.

[Example 4]

Further, as Example 4, a reel member having an elastic ring made of urethane rubber was prepared. The reel member of the fourth embodiment is a cross-sectional area ratio of the retreat space 10 and the elastic ring 4: the cross-sectional area of the retreat space 10 (A × D + C × D) / the cross-sectional area of the elastic ring 4 (B × D) is set to 5% . Then, a film having a length of 300 m was wound around the reel member at a tension of 0.75 N, and the presence or absence of adhesion or adhesion of the adhesive resin when the reel member was normally wound up as a film was confirmed. Moreover, the tightness load intensity at the time of extracting the adhesive film in the state which restricts rotation of each reel member was measured, and the presence or absence of the overflow after the measurement was evaluated.

In Example 11, an elastic ring having a Shore A hardness of 40° and a thickness of 1 mm was used.

In Example 12, an elastic ring having a Shore A hardness of 40° and a thickness of 2 mm was used.

In Example 13, an elastic ring having a Shore A hardness of 40° and a thickness of 5 mm was used.

In Example 14, an elastic ring having a Shore A hardness of 80° and a thickness of 1 mm was used.

In Example 15, an elastic ring having a Shore A hardness of 80° and a thickness of 2 mm was used.

In Example 16, an elastic ring having a Shore A hardness of 80° and a thickness of 5 mm was used.

The observation of the overflow or adhesion of the adhesive resin when the respective reel members are rolled out of the film, or the strength of the winding load when the film is taken out while restricting the rotation of each of the reel members The measurement and evaluation methods of the measurement and the overflow at the time of the extraction of the film were the same as in the first embodiment. The measurement results are shown in Table 4.

As shown in Table 4, Examples 11 to 16 were practically free from problems. In Examples 11 to 13 in which the rubber hardness was 40°, when the film was wound up as usual, no overflow was observed, but the strength of the winding load when the film was taken out tends to decrease as the thickness increases. On the other hand, in Examples 14 to 16 in which the rubber hardness was 80°, in Example 14 having a thickness of 1 mm, when the film was wound up as usual, overflow was slightly observed, but the thickness was thinned. And take it out The tendency of the tight load strength of the film to increase.

In this way, as usual, the evaluation of the overflow when the winding core and the elastic ring are rotated while the film is wound out, and the tightness of the winding load when the film is removed in a state where the winding of the winding core and the elastic ring are restricted is caused by the elastic ring. The opposite of rubber hardness or thickness.

1‧‧‧Reel components

2‧‧‧Next film

3‧‧‧Volume core

4‧‧‧ Elastomers

5a, 5b‧‧‧ reel flange

10‧‧‧Retreat space

11a, 11b‧‧‧ grooves

A‧‧‧ Height of the ribs on the flange side of a reel

B‧‧‧Width of elastic ring

C‧‧‧ Height of the ribs on the flange side of the other reel

D‧‧‧The thickness of the elastic ring

Claims (10)

A reel member comprising: a winding core; an annular elastic body fitted to an outer circumferential surface of the winding core, wound with a strip-shaped adhesive film; and a reel flange disposed on both sides of the winding core The elastomer has a Shore A hardness greater than 30° and less than 90°. The reel member according to claim 1, wherein the elastomer has a Shore A hardness of 80° or more. The reel member according to claim 2, wherein the maximum load applied when the wound film is taken out is 5 N or more in a state where the winding of the winding core and the elastic body is restricted. The reel member according to claim 1, wherein the reel flange is provided with a retreat space for retracting one of the elastic bodies when the elastic body is compression-deformed. The reel member of claim 4, wherein the retreat space faces the elastic body and is formed on an inner surface of the reel flange, and the cross-sectional area ratio is 3.5 to a cross-sectional area of the elastic body. 20%. The reel member of claim 5, wherein the retracting space is a size that abuts the elastic body when the elastic body is deformed to the maximum extent. The reel member of claim 4, wherein the retracting space is formed on an inner surface of the reel flange and forms an annular groove at a position facing the elastic body. The reel member of claim 4, wherein the retreat space is provided with a plurality of ribs radially on an inner surface of the reel flange, and the inner peripheral side of the rib is end The portion is formed to be at a boundary position facing the position of the elastic body. The reel member of claim 4, wherein the retreat space is disposed concentrically with the flange of the reel at a position facing the elastic body on an inner surface of the flange of the reel Formed by a ring-shaped rib. The reel member of claim 1 is wound with the adhesive film.