WO2014007114A1

WO2014007114A1 - Reel member and film housing

Info

Publication number: WO2014007114A1
Application number: PCT/JP2013/067448
Authority: WO
Inventors: 和典濱崎; 崇引地
Original assignee: デクセリアルズ株式会社
Priority date: 2012-07-04
Filing date: 2013-06-26
Publication date: 2014-01-09
Also published as: JP2014012573A; JP5905351B2; TW201418133A

Abstract

The present invention provides a configuration which makes it possible that in a reel member for taking up and paying out a long adhesive film, the adhesive film is smoothly paid out by preventing deflection of a flange outer periphery due to the own weight of the reel member. This reel member (1) is provided with: a winding core shaft portion (2) which is formed in a cylindrical shape and is able to take up an adhesive film, and first and second flange portions (11, 12) which are provided at both ends of the winding core shaft portion (2) and formed such that opposite inner surfaces (11a, 12a) are parallel to each other. A reinforced portion (3) with a constant thickness is provided near the winding core shaft portion (2) in each of the first and second flange portions (11, 12), and a weight-reduced portion (4) which is formed such that the thickness thereof is smaller than the thickness of the reinforced portion (3) is provided in the outer section of each of the first and second flange portions (11, 12) and the section on the flange outer peripheral side from the reinforced portion (3).

Description

Reel member and film container

The present invention relates to a reel member technique for winding and drawing out a series of long adhesive films such as anisotropic conductive adhesive films.

In general, for example, when an electronic component such as a liquid crystal panel or an IC chip is electrically connected, an anisotropic conductive adhesive film in which conductive particles are dispersed in an insulating adhesive is used.
In recent years, a conductive adhesive film containing conductive particles in an insulating adhesive has been used as an adhesive film for electrically connecting and bonding electrodes for solar cells.
Such an adhesive film is formed on a narrow and long release sheet, and is shipped in the form of a reel member wound up in a roll shape.

In recent years, it has been desired to lengthen such an adhesive film. However, when the adhesive film becomes longer, the flange portion of the reel member has a larger diameter, and due to its own weight, the flange outer peripheral portion is bent, and the adhesive film There is a problem of hindering smooth withdrawal.
If the length of the adhesive film cannot be increased, it is necessary to frequently replace the reel member wound with the short adhesive film, and the production line is stopped each time, so that the production efficiency is lowered.

JP 2007-94662 A

The present invention has been made in consideration of the above-described problems of the prior art. The object of the present invention is to provide a reel member that winds and pulls out a long adhesive film, and a flange outer peripheral portion due to its own weight. It is an object of the present invention to provide a technique capable of preventing the deflection and performing a smooth drawing.

In order to achieve the above object, the present invention is formed in a cylindrical shape and capable of winding an adhesive film, and provided on both end portions of the core shaft portion, and opposed inner surfaces are parallel to each other. The first and second flange portions are formed so as to become, a reinforcing portion having a predetermined thickness is provided in the vicinity of the core shaft portion of the first and second flange portions, and the first And a reel having a lighter portion formed on the outer portion of the second flange portion and on the outer peripheral side of the flange with respect to the reinforcing portion so that the thickness is smaller than the thickness of the reinforcing portion. It is a member.
In the present invention, it is also effective when the reinforcing portion is formed to have a constant thickness.
The present invention is also effective when reinforcing ribs for reinforcing the first and second flange portions are provided on the outer surfaces of the first and second flange portions.
In the present invention, it is also effective when the lightening portion is formed in a tapered shape so that the thickness decreases from the reinforcing portion toward the outer peripheral portion of the flange.
In this invention, it is effective also when the guide rib for guiding the said adhesive film is provided in the inner surface of the said 1st and 2nd flange part.
Moreover, this invention is a film container which has one of the reel members mentioned above, and the adhesive film wound up by the core shaft part of the said reel member.
In the present invention, it is also effective when the adhesive film is an anisotropic conductive adhesive film in which conductive particles are dispersed in an insulating adhesive.

In the case of the present invention, for example, a reinforcing portion having a certain thickness is provided in the vicinity of the core shaft portion of the first and second flange portions, and at the inner portion of the first and second flange portions and on the reinforcing portion. On the other hand, the flange portion is provided with a light-weighted portion, for example, tapered so that the thickness is thinner than the thickness of the reinforcing portion. Therefore, it is possible to reduce the weight of the outer peripheral portion of the flange of the first and second flange portions, thereby preventing the deflection of the outer peripheral portion of the flange due to the weight of the reel member. The accuracy of the clearance can be improved.
Further, in the present invention, since the opposing inner side surfaces of the first and second flange portions are formed to be parallel, for example, when pulling out the adhesive film by hand, the drawing direction (angle) is orthogonal to the rotation axis. Even if it is a case where it deviates from a direction to perform, or an adhesive film twists, omission of an adhesive film can be controlled.
In the present invention, when the reinforcing ribs for reinforcing the first and second flange portions are provided on the outer surfaces of the first and second flange portions, the rigidity of the reel member can be further improved. Therefore, the accuracy of the clearance between the first and second flange portions can be further improved.
In the present invention, when the light weight portion is formed in a tapered shape so that the thickness decreases from the reinforcing portion toward the outer peripheral portion of the flange, the light weight can be easily reduced without significantly reducing the rigidity of the reel member. It can be carried out.
In the present invention, when guide ribs for guiding the adhesive film are provided on the inner portions of the first and second flange portions, it is possible to prevent meandering of the adhesive film during winding and withdrawal. In this way, it is possible to reliably prevent the adhesive film from dropping off at the time of winding and the adhesive film from being caught or blocked at the time of drawing.

According to the present invention, in the reel member that winds up and pulls out the adhesive film, it is possible to prevent the flange outer peripheral portion from being bent due to the weight of the reel member. Therefore, it is possible to wind a longer adhesive film on one reel member. it can.
As a result, according to the present invention, it is not necessary to frequently replace the reel member in the adhesive film sticking step, and the production efficiency can be greatly improved.

(A): Plan view showing the inner structure of the embodiment of the reel member according to the present invention (b): AA line sectional view of FIG. 1 (a) (c): B— of FIG. 1 (a) B line cross section Sectional drawing which shows the whole structure of the reel member Sectional drawing which shows the whole structure of embodiment of the film container which concerns on this invention (A): Plan view showing another embodiment of the reel member according to the present invention (b): Sectional view taken along the line CC of FIG. 1 (a) (c): Section showing a modification of the present embodiment Figure (A) (b): Explanatory drawing which shows the dimensional relationship of each part in the reel member of this invention Sectional drawing which shows the structure of the reel member of the comparative example 1 Sectional drawing which shows the structure of the reel member of the comparative example 2 Sectional drawing which shows the structure of the reel member of the comparative example 3

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.
1A is a plan view showing an inner configuration of an embodiment of a reel member according to the present invention, FIG. 1B is a cross-sectional view taken along line AA of FIG. 1A, and FIG. ) Is a cross-sectional view taken along the line BB of FIG. FIG. 2 is a cross-sectional view showing the overall configuration of the reel member of the present embodiment.

The reel member 1 of the present embodiment is made of polystyrene resin from the viewpoint of ensuring dimensional stability. As shown in FIGS. 1A to 1C, the reel member 1 is driven by a film winding device or a film drawing device. The shaft 10 is attached.

The reel member 1 has, for example, a cylindrical core shaft portion 2 around which a long adhesive film such as an anisotropic conductive adhesive film is wound. The first and

second flange portions

11 and 12 are integrally provided.

In the case of the present embodiment, the first and

second flange portions

11 and 12 are formed in parallel so that the opposed

inner side surfaces

11a and 12a (see FIG. 2) are planes orthogonal to the rotation axis O, It has the same configuration.

In the vicinity of the core shaft portion 2 of the first and

second flange portions

11 and 12, for example, circular reinforcing portions 3 are provided, respectively.
The reinforcing portion 3 has an outer surface formed in parallel with the inner surfaces of the first and

second flange portions

11 and 12, and is formed to have a constant thickness.

The weight reduction part 4 is provided in the outer peripheral part with respect to the reinforcement part 3 in the outer part of the 1st and

2nd flange parts

11 and 12, respectively.
The lightening portion 4 is formed in a tapered shape so that the thickness is thinner than the reinforcing portion 3 from the reinforcing portion 3 toward the outer peripheral side of the flange.
In the present embodiment, the inner side surface of the weight reducing portion 4 is connected to the

inner side surfaces

11a and 12a of the first and

second flange portions

11 and 12, and is formed in a flat shape.

Further, guide ribs 5 for guiding the adhesive film are provided on the

inner side surfaces

11a and 12a of the first and

second flange portions

11 and 12 and on the outer peripheral side of the flange with respect to the core shaft portion 2. Each is provided.

The guide rib 5 is composed of a plurality of convex portions extending in a radial straight line around the rotation axis O of the reel member 1.
A predetermined radius is applied to each top portion of the guide rib 5.

FIG. 3 is a cross-sectional view showing the overall configuration of the embodiment of the film container according to the present invention.
As shown in FIG. 3, the reel member 1 shown in FIG. 2 is mounted on a drive shaft of a film winding device (not shown), and a long adhesive film 6 is wound around the core shaft portion 2, thereby A film container 20 is obtained.

4 (a) to 4 (c) show another embodiment of a reel member according to the present invention. FIG. 4 (a) is a plan view, and FIG. 4 (b) is a diagram C in FIG. 4 (a). FIG. 4C is a cross-sectional view showing a modification of the present embodiment.

As shown in FIGS. 4A to 4C, the reel member 1A of the present embodiment is provided with reinforcing ribs 7 on the outer surfaces of the first and

second flange portions

11 and 12.
The reinforcing rib 7 of the present embodiment is composed of a plurality of convex portions extending in a radial straight line around the rotation axis O of the reel member 1.
In the case of the present invention, although not particularly limited, it is preferable to form the top of the reinforcing rib 7 so as to be a plane orthogonal to the rotation axis O from the viewpoint of securing the reinforcing effect.

Further, in the case of the present embodiment, as shown in FIG. 4B, the diameter of the reinforcing portion 3 is configured to be equal to the diameter of the core shaft portion 2, or as shown in FIG. Moreover, the diameter of the reinforcing portion 3 can be configured to be larger than the diameter of the core shaft portion 2.

5 (a) and 5 (b) are explanatory views showing the dimensional relationship of each part in the reel member of the present invention, and FIG. 5 (a) is an embodiment shown in FIGS. 1 (a) to 1 (c) and FIG. FIG. 5 (b) corresponds to the embodiment shown in FIGS. 4 (a) to 4 (c).

As shown in FIGS. 5 (a) and 5 (b), the

reel members

1, 1A and 1B according to the present invention are effective for a long (300 to 600 m) adhesive film 6 and have a large diameter first and second. The

flange portions

11 and 12 are provided.
Specifically, the diameter of the first and

second flange portions

11 and 12 is 250 to 300 mm, and the distance between the first and

second flange portions

11 and 12, that is, the thickness t of the core shaft portion 2 is: This is particularly effective when the thickness is 1.0 to 1.3 mm.

In this case, the diameter d of the core shaft portion 2 is (diameter of the first and

second flange portions

11 and 12 / 2.5) from the viewpoint of securing necessary rigidity and reducing the weight of the outer peripheral portion of the flange. It is preferable to set to ± 10%.
Specifically, from the viewpoint of reducing the weight of the outer peripheral portion of the flange, it is preferable to set it to about 100 mm.

In addition, in the case of the embodiment shown in FIG. 5 (a), the diameter D ₁ of the reinforcing section 3, from the viewpoint of reducing the weight of the and flange outer peripheral part to secure the necessary rigidity, (first and second flanges It is preferable to set the diameter of the

portions

11 and 12 / 1.5) ± 10%.
In this case, the specifically preferred diameter D ₁ of the reinforcing portion 3 is 80 to 150 mm, but is preferably set to about 90 mm from the viewpoint of weight reduction.
In the case of the present embodiment, unlike the embodiment shown in FIG. 5B, the reinforcing rib 7 is not provided, and therefore the diameter D ₁ of the reinforcing portion 3 is larger than the diameter d of the core shaft portion 2. It is configured as follows.

On the other hand, in the embodiment shown in FIGS. 5 (a) and 5 (b), the ratio H ₁ : H ₂ of the weight reducing portion 4 is preferable from the viewpoint of securing necessary rigidity and reducing the weight of the outer peripheral portion of the flange. Is from 5: 4 to 3: 2, more preferably 4: 3.
Specifically, the preferable size H ₁ of the lightening portion 4 on the center side is 1.7 to 2.5 mm, and the preferable size H ₂ of the lightening portion 4 on the outer peripheral side is 1.0 to 2.5 mm. 1.7 mm.

On the other hand, in the case of the embodiment shown in FIG. 5B, since the reinforcing rib 7 is provided, the diameter D ₂ of the reinforcing portion 3 is the reinforcing portion 3 of the embodiment shown in FIG. For example, it can be set to be equal to the diameter d of the core shaft portion 2 so as to be smaller than the diameter D _{1 of the} core shaft 2.
In this case, the specifically preferred diameter D ₂ of the reinforcing portion 3 is 60 to 150 mm, but is preferably set to about 70 mm from the viewpoint of weight reduction.

Further, as described above, the reinforcing rib 7 is preferably formed so that the top portion thereof is a plane orthogonal to the rotation axis O. In that case, it is preferable that the height h ₁ of the reinforcing rib 7 on the outer peripheral portion of the flange is set to 0.5 to 1.5 mm.

On the other hand, the number of reinforcing ribs 7 is preferably increased as the reel diameter increases.
In the range to which the present invention is applied, 8 to 24 are preferable, and 12 to 24 are more preferable.

If the number of the reinforcing ribs 7 is less than 8, the reinforcing effect is insufficient, and the flange portion may be distorted. On the other hand, if the number of the reinforcing ribs 7 is more than 24, the outer periphery of the flange may bend due to its own weight. This may occur and hinder smooth withdrawal of the adhesive film 6.

In order to increase the diameter of the reel member 1, a configuration in which many reinforcing ribs 7 are provided on the outer peripheral portions of the first and

second flange portions

11 and 12 may be employed.
Further, in the embodiment shown in FIGS. 5 (a) and 5 (b), the height h ₂ of the guide rib 5 is 0.4 to 4 from the viewpoint of securing necessary rigidity and reducing the weight of the outer peripheral portion of the flange. The thickness is preferably 0.5 mm.

Furthermore, the distance between the guide ribs 5 (clearance) is 0.05 to 0. 0 with respect to the width of the adhesive film 6 from the viewpoint of preventing the adhesive film from sticking to the rib surface and preventing the adhesive film from dropping into the gap. It is preferable to set so as to be 10 mm apart.

On the other hand, it is preferable to increase the number of guide ribs 5 as the reel diameter increases.
In the range to which the present invention is applied, 8 to 24 are preferable, and 12 to 24 are more preferable.

If the number of guide ribs 5 is less than 8, the adhesive film 6 may be left sideways after winding of the adhesive film 6 or may be displaced during transportation. On the other hand, if the number of guide ribs 5 is greater than 24, There is a possibility that the adhesive film 6 may run up at the time of taking, and at the same time, the risk of adhesion of the adhesive film 6 to the rib surface increases.
In order to increase the diameter of the reel member 1, it is possible to employ a configuration in which many guide ribs 5 are provided on the outer peripheral portions of the first and

second flange portions

11 and 12.

In the present embodiment described above, the reinforcing portion 3 having a certain thickness is provided in the vicinity of the core shaft portion 2 of the first and

second flange portions

11 and 12, and the first and second flange portions 11 are provided. , 12 and a portion on the outer peripheral side of the flange with respect to the reinforcing portion 3 is provided with a lightening portion 4 formed in a tapered shape so that the thickness is thinner than the thickness of the reinforcing portion 3. Therefore, the rigidity of the

reel members

1, 1 </ b> A, 1 </ b> B can be ensured by the reinforcing portion 3, and the weight of the outer peripheral portion of the first and

second flange portions

11, 12 can be reduced. Since the deflection of the outer peripheral portion of the flange due to its own weight of 1A and 1B can be prevented, the accuracy of the clearance between the first and

second flange portions

11 and 12 can be improved.

Further, in the present embodiment, since the light weight portion 4 is formed in a tapered shape so that the thickness decreases from the reinforcing portion 3 toward the flange outer peripheral portion, the rigidity of the

reel members

1, 1 </ b> A, 1 </ b> B is increased. It is possible to easily reduce the weight without significantly reducing the cost.

Further, in the present embodiment, since the opposed inner side surfaces 11a and 12a of the first and

second flange portions

11 and 12 are formed in parallel, they are pulled out when the adhesive film 6 is pulled out by hand, for example. Even when the direction (angle) is deviated from the direction orthogonal to the rotation axis or the adhesive film 6 is twisted, the dropping of the adhesive film 6 can be suppressed.

Furthermore, in the present embodiment, guide ribs 5 for guiding the adhesive film 6 are provided on the inner portions of the first and

second flange portions

11 and 12, and the adhesive film 6 of the guide rib 5 is guided. Since the surface to be positioned is located on a surface orthogonal to the rotation direction of the reel member 1, it is possible to reliably prevent meandering of the adhesive film 6 during winding and withdrawal, As a result, it is possible to reliably prevent the adhesive film 6 from dropping off at the time of winding and the adhesive film 6 from being caught or blocked from being pulled out.

On the other hand, in the embodiment shown in FIGS. 4A to 4C, reinforcement for reinforcing the first and

second flange portions

11 and 12 on the outer surfaces of the first and

second flange portions

11 and 12 is provided. Since the rib 7 is provided, the rigidity of the

reel members

1A and 1B can be further improved, and thereby the accuracy of the clearance between the first and

second flange portions

11 and 12 can be further improved.

EXAMPLES Hereinafter, although an Example and a comparative example are given and this invention is demonstrated concretely, this invention is not limited to a following example.
<Creation of adhesive film>
As the adhesive film, an anisotropic conductive adhesive film in which an anisotropic conductive adhesive having a thickness of 30 μm after drying was formed on a release sheet (not shown) having a width of 1.0 mm was used. The type of adhesive is an epoxy thermosetting type.

Here, the minimum melt viscosity of the anisotropic conductive adhesive film is 3.0 × 10 ⁴ Pa · s.
This minimum melt viscosity is a value measured by using a measuring plate having a diameter of 8 mm, using a rotary rheometer (manufactured by TA instrument), keeping the heating rate constant at 10 ° C./min, measuring pressure at 5 g. is there.

<Example 1>
As the reel member, a double-sided flange type made of polystyrene resin, having a diameter of the core shaft portion of 85 mm, a thickness of 1.25 mm, and a diameter of the first and second flange portions of 250 mm was used. This is of the configuration shown in FIG.

The reinforcing portion of the reel member had a thickness of 2.0 mm and a diameter of 185 mm.
Moreover, the light weight part was formed in a flat taper shape, the height at the inner peripheral part of the flange was set to 2.0 mm which was the same as the thickness of the reinforcing part, and the thickness at the outer peripheral part of the flange was set to 1.5 mm.

On the other hand, the height of the guide rib on the outer peripheral portion of the flange was set to 0.5 mm from the inner surface of the first and second flange portions.
Further, 12 guide ribs were provided at equal intervals.
An anisotropic conductive adhesive film having a length of 500 m was wound around the reel member as an adhesive film.

<Example 2>
As a reel member, as shown in FIGS. 4A and 4B, a reinforcing portion having the same diameter as that of the core shaft portion, and a weight reducing portion and a reinforcing rib provided on the outer portions of the first and second flange portions. Was used. The dimensions of the reel member other than the reinforcing portion and the lightening portion are the same as the corresponding portions in the first embodiment.
An adhesive film having a length of 500 m was wound around the reel member.

<Example 3>
As shown in FIG. 4C, the reel member has a reinforcing portion having a diameter larger than the diameter of the core shaft portion, and a lightening portion and a reinforcing rib provided on the outer portions of the first and second flange portions. Using. The dimensions of the other portions of the reel member are the same as the corresponding portions of the first embodiment.
An adhesive film having a length of 500 m was wound around the reel member.

<Comparative Example 1>
As the reel member, as shown in FIG. 6, the lightening portion and the guide rib are provided inside the first and second flange portions without providing the lightening portion and the reinforcing rib on the outer portion of the first and second flange portions. Used. The dimension of each part of the reel member is the same as the dimension of the corresponding part in the first embodiment.
An adhesive film having a length of 500 m was wound around the reel member.

<Comparative Example 2>
As shown in FIG. 7, as the reel member, a reinforcing portion having the same diameter as the diameter of the core shaft portion, a lightening portion provided on the outer portion of the first and second flange portions, and a reinforcing rib not provided. Using. The dimension of each part of the reel member is the same as the dimension of the corresponding part in the second embodiment.
An adhesive film having a length of 500 m was wound around the reel member.

<Comparative Example 3>
As the reel member, as shown in FIG. 8, a member that does not have a light weight portion and a reinforcing rib on the outer portion of the first and second flange portions was used. This reel member has the structure of a conventional reel member.
An adhesive film having a length of 500 m was wound around the reel member.

<Evaluation>
The reel members (film containers) prepared according to Examples 1 to 3 and Comparative Examples 1 to 3 are left to stand in a room temperature environment for 24 hours, respectively, and the clearance between the first and second flange portions on the outer periphery of the flange is reflected by the laser. It measured using the type displacement meter. The results are shown in Table 1.

In addition, the adhesive film was pulled out for 1 second at an interval of 1 second at a drawing tension of 50 g and a pulling speed of 500 mm / second until the end. Blocking and dropout) were visually observed.
In this case, the drawing angle of the adhesive film was inclined by 0 °, 10 °, and 20 ° with respect to the direction orthogonal to the rotation axis of the reel member, and each was repeatedly drawn five times. The results are shown in Table 1.

<Evaluation results>
As is apparent from Table 1, Example 1 in which the reinforcing portion having a diameter larger than the diameter of the core shaft portion and the lightening portion is provided on the outer surface of the first and second flange portions, the reinforcing portion and the first and second portions. In Examples 2 and 3 in which the weight reduction part and the reinforcing rib were provided on the outer surface of the flange part, the clearance deviation at the flange outer peripheral part was small (1.15 ± 0.1 mm or less).

In particular, in Example 3 in which the weight-reducing portion and the reinforcing rib are provided on the outer surface of the first and second flange portions, the clearance deviation is 1.15 ± 0. 05, very small.
Further, in Examples 1 to 3, no problem occurred when the adhesive film was pulled out.

On the other hand, in the case of the comparative example 1 in which the lightening portion and the reinforcing rib are not provided on the outside portions of the first and second flange portions, and the lightening portion and the guide rib are provided on the inside of the first and second flange portions, The clearance deviation at the flange outer periphery was small (1.15 ± 0.1 mm), but when the drawing angle of the adhesive film was set to 10 °, the adhesive film dropped out twice out of 5 times during drawing, When the drawing angle was 20 °, the adhesive film dropped out 5 times out of 5 times.

On the other hand, in the case of Comparative Example 2 in which the reinforcing portion having the same diameter as the diameter of the core shaft portion, the lightening portion is provided in the outer portions of the first and second flange portions, and the reinforcing rib is not provided, the adhesive film is drawn out. Although the dropout at the time did not occur, the clearance deviation at the outer peripheral portion of the flange became large (1.15 ± 0.2 mm), and at the time of pulling out, a catch occurred.

Furthermore, in the case of Comparative Example 3 in which the lightening portion and the reinforcing rib are not provided on the outer portions of the first and second flange portions, the clearance deviation in the flange outer peripheral portion increases (1.15 ± 0.4 mm), At the time of withdrawal, catching and blocking occurred.

In addition, when the drawing angle of the adhesive film is set to 0 °, the adhesive film is dropped twice in five times at the time of drawing, and when the drawing angle is set to 10 ° and 20 °, it is bonded five times in five times. Film dropout occurred.

From the above results, according to the present invention, the deflection of the outer peripheral portion of the flange due to the weight of the reel member is prevented, the accuracy of the clearance between the first and second flange portions is improved, and the adhesive film is prevented from dropping when being pulled out. We were able to prove that it can be prevented.

DESCRIPTION OF SYMBOLS 1 ... Reel member 2 ... Core shaft part 3 ... Reinforcement part 4 ... Lightening part 5 ... Guide rib 6 ... Adhesive film 7 ... Reinforcement rib 10 ... Drive shaft 11 ... 1st flange part 12 ... 2nd flange part O ... Rotation Axis

Claims

A core shaft portion formed in a cylindrical shape and capable of winding an adhesive film;
A first flange portion and a second flange portion provided at both ends of the core shaft portion and formed so that opposing inner side surfaces are parallel;
A reinforcing portion having a predetermined thickness is provided in the vicinity of the core shaft portion of the first and second flange portions,
A lightening portion formed so that the thickness is thinner than the thickness of the reinforcing portion is provided on the outer portion of the first and second flange portions and on the flange outer peripheral side with respect to the reinforcing portion. Reel member.
The reel member according to claim 1, wherein the reinforcing portion is formed to have a constant thickness.
3. The reel member according to claim 1, wherein reinforcing ribs for reinforcing the first and second flange portions are provided on outer surfaces of the first and second flange portions.
The reel member according to any one of claims 1 to 3, wherein the lightening portion is formed in a tapered shape so that the thickness thereof decreases from the reinforcing portion toward the outer peripheral portion of the flange.
The reel member according to any one of claims 1 to 4, wherein guide ribs for guiding the adhesive film are provided on inner side surfaces of the first and second flange portions.
A core shaft portion formed in a cylindrical shape and capable of winding an adhesive film, and first and second flanges provided at both ends of the core shaft portion so that opposing inner surfaces are parallel to each other A reinforcing portion having a predetermined thickness in the vicinity of the core shaft portion of the first and second flange portions, an outer portion of the first and second flange portions, and the A reel member provided with a weight reduction portion formed so that the thickness is thinner than the thickness of the reinforcing portion on the flange outer peripheral side with respect to the reinforcing portion;
A film container having an adhesive film wound around a core shaft portion of the reel member.
The film container according to claim 6, wherein the adhesive film is an anisotropic conductive adhesive film in which conductive particles are dispersed in an insulating adhesive.