TW201418133A - Reel member and film container body - Google Patents

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 technique of a reel member for winding and extracting a series of strips of a film such as an anisotropic conductive film.

In general, for example, when an electronic component such as a liquid crystal panel or an IC wafer is electrically connected to each other, an anisotropic conductive adhesive film in which conductive particles are dispersed in an insulating adhesive is used.

In addition, in recent years, a conductive adhesive film in which conductive particles are contained in an insulating adhesive is used as an adhesive film for electrically connecting electrodes for solar cells.

Such an adhesive film is formed by being formed on a long and narrow release sheet and wound in a roll shape on a reel member.

In recent years, it has been desired to realize the stripping of such a film, but there is a problem in that if the film is elongated, the flange portion of the reel member is increased in diameter and may be due to the weight of the reel member. However, deflection occurs at the outer peripheral portion of the flange, which hinders the smooth extraction of the adhesive film.

Further, if the lamination of the adhesive film cannot be achieved, it is necessary to wind the film of the short strip or frequently replace the reel member, and the production line is stopped each time, which results in a decrease in production efficiency.

[Patent Document 1] Japanese Patent Laid-Open Publication No. 2007-94662

The present invention has been made in view of the above-described technical problems as described above, and an object thereof is to provide a technique for preventing a reel member from being taken up and taken out of a long film by a reel member. The deflection of the outer peripheral portion of the flange caused by its own weight allows the adhesive film to be smoothly taken out.

The present invention for achieving the above object is a reel member including a winding core portion formed in a cylindrical shape and capable of winding up an adhesive film, and first and second flange portions provided on the above-mentioned roll Both end portions of the mandrel portion are formed to be parallel with respect to the inner side surface thereof; and a reinforcing portion having a predetermined thickness is provided in the vicinity of the winding core portion of the first and second flange portions; And the outer portion of the second flange portion, and a portion having a thickness thinner than the thickness of the reinforcing portion is provided in a portion on the outer peripheral side of the flange with respect to the reinforcing portion.

The present invention is also effective in the case where the above-described reinforcing portion is formed to a certain thickness.

The present invention is also effective in the case where the reinforcing ribs for reinforcing the first and second flange portions are provided on the outer side surfaces of the first and second flange portions.

The present invention is also effective in the case where the thickness of the lightweight portion is tapered from the reinforcing portion toward the outer peripheral portion of the flange.

The present invention is also effective in the case where the guide rib for guiding the above-mentioned adhesive film is provided on the inner side surfaces of the first and second flange portions.

Moreover, the present invention is a film storage body having any of the above-described reel members and winding An adhesive film on the winding core portion of the reel member.

The present invention is also effective in the case where the above-mentioned 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 constant thickness is provided in the vicinity of the winding core portion of the first and second flange portions, and the inner portion of the first and second flange portions is opposed to The reinforcing portion is provided with a lightweight portion which is formed in a tapered shape so that the thickness is thinner than the thickness of the reinforcing portion, so that the rigidity of the reel member can be ensured by the reinforcing portion. Thereafter, the weight of the outer peripheral portion of the flange of the first and second flange portions is reduced, whereby the deflection of the outer peripheral portion of the flange due to the weight of the reel member can be prevented, so that the first and the third can be improved. 2 Clearance between the flange portions.

Further, in the present invention, the opposite inner side faces of the first and second flange portions are formed in a parallel manner, and therefore, for example, when the film is taken out by a human hand, even if the drawing direction (angle) is vertical In the case where the direction of the rotation axis is deviated, or the film is twisted, the peeling of the adhesive film can also be suppressed.

In the present invention, when the reinforcing ribs for reinforcing the first and second flange portions are provided on the outer surface of the first and second flange portions, the rigidity of the reel member can be further increased, so that the rigidity can be further improved. The accuracy of the gap between the first and second flange portions.

In the present invention, when the lightweight portion is formed into a tapered shape so that the thickness is reduced from the reinforcing portion toward the outer peripheral portion of the flange, the weight can be easily reduced without significantly impairing the rigidity of the reel member.

In the present invention, when the guide rib for guiding the adhesive film is provided in the inner portion of the first and second flange portions, it is possible to prevent the film from being snaking during the winding and the extraction. It is sure to prevent the peeling of the film at the time of winding and the like, and the pulling or sticking of the film at the time of taking out (blocking), etc.

The present invention is directed to a reel member that winds up and extracts an adhesive film, and prevents deflection of the outer peripheral portion of the flange caused by the weight of the reel member, so that a longer strip of the film can be wound around a reel member.

As a result, according to the present invention, in the step of adhering the film, it is not necessary to frequently replace the reel member, and the production efficiency can be greatly improved.

1‧‧‧Reel components

2‧‧‧Rolling shaft part

3‧‧‧Reinforcement Department

4‧‧‧Lighting Department

5‧‧‧Guided ribs

6‧‧‧Next film

7‧‧‧ reinforcing ribs

10‧‧‧ drive shaft

11‧‧‧1st flange

12‧‧‧2nd flange

O‧‧‧Rotation axis

Figure 1 (a) is a plan view showing the inner structure of the embodiment of the reel member of the present invention; Figure 1 (b) is a cross-sectional view taken along line AA of Figure 1 (a); Figure 1 (c) is Figure 1 (a) BB line profile.

Fig. 2 is a cross-sectional view showing the overall configuration of the reel member.

Fig. 3 is a cross-sectional view showing the overall configuration of an embodiment of a film container of the present invention.

Fig. 4 (a) is a plan view showing another embodiment of the reel member of the present invention; Fig. 4 (b) is a cross-sectional view taken along line CC of Fig. 4 (a); and Fig. 4 (c) is a modification of the embodiment. Sectional view.

Fig. 5 (a) and (b) are explanatory views showing the dimensional relationship of each portion in the reel member of the present invention.

Fig. 6 is a cross-sectional view showing the configuration of a reel member of Comparative Example 1.

Fig. 7 is a cross-sectional view showing the configuration of a reel member of Comparative Example 2.

Fig. 8 is a cross-sectional view showing the configuration of a reel member of Comparative Example 3.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

Fig. 1(a) is a plan view showing the inner structure of the embodiment of the reel member of the present invention, Fig. 1(b) is a cross-sectional view taken along line AA of Fig. 1(a), and Fig. 1(c) is a view of Fig. 1(a) BB line profile. Moreover, Fig. 2 is a cross-sectional view showing the overall configuration of the reel member of the embodiment.

The reel member 1 of the present embodiment is made of a polystyrene resin and is attached to the film winding device or the film extracting device as shown in Figs. 1 (a) to (c), from the viewpoint of ensuring dimensional stability. Drive the shaft 10 .

The reel member 1 has a cylindrical core shaft portion 2 in which a long strip film such as an anisotropic conductive film is wound, and the first and the disc shape are The second flange portions 11 and 12 are integrally provided at both end portions of the winding core portion 2 .

In the case of the present embodiment, the first and second flange portions 11 and 12 are formed in parallel so that the inner side surfaces 11a and 12a (see FIG. 2) are perpendicular to the rotation axis O, and Have the same composition.

In the vicinity of the winding core portion 2 of the first and second flange portions 11 and 12, for example, a circular reinforcing portion 3 is provided.

The reinforcing portion 3 has an outer surface which is formed in parallel with the inner side surfaces of the first and second flange portions 11 and 12, and is formed to have a constant thickness.

The lightweight portion 4 is provided in each of the outer portions of the first and second flange portions 11 and 12 and on the outer peripheral side of the flange with respect to the reinforcing portion 3.

The lightweight portion 4 is formed in a tapered shape so that the thickness of the reinforcing portion 3 becomes thinner toward the outer peripheral side of the flange than the reinforcing portion 3.

In the present embodiment, the inner side surfaces of the lightweight unit 4 are connected to the inner side surfaces 11a and 12a of the first and second flange portions 11 and 12, respectively, and are formed in a planar shape.

Further, on the inner side surfaces 11a and 12a of the first and second flange portions 11 and 12, and the portion on the outer circumferential side of the flange with respect to the winding core portion 2, guides for guiding the film are provided. Rib 5.

The guide rib 5 is composed of a plurality of convex portions, and the plurality of convex portions extend linearly around the rotation axis O of the reel member 1.

Further, each of the tops of the guide ribs 5 is provided with a predetermined round.

Fig. 3 is a cross-sectional view showing the overall configuration of an embodiment of the film container of the present invention.

As shown in FIG. 3, the reel member 1 shown in FIG. 2 is attached to a drive shaft of a film winding device (not shown), and the long film 6 is wound around the winding core portion 2, whereby The film container 20 of the present embodiment can be obtained.

4(a) to 4(c) are views showing another embodiment of the reel member of the present invention, wherein Fig. 4(a) is a plan view, and Fig. 4(b) is a cross-sectional view taken along line CC of Fig. 4(a), Fig. 4(c) Fig. 4 is a cross-sectional view showing a modification of the embodiment.

As shown in FIGS. 4(a) to 4(c), 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, 12.

The reinforcing rib 7 of the present embodiment is composed of a plurality of convex portions, and the plurality of convex portions extend linearly around the rotation axis O of the reel member 1.

In the case of the present invention, it is not particularly limited, but the top of the reinforcing rib 7 is preferably formed to have a plane perpendicular 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. 4(b), the diameter of the reinforcing portion 3 is equal to the diameter of the winding core portion 2, or as shown in Fig. 4(c), the diameter of the reinforcing portion 3 is also It may 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 portion of the reel member of the present invention, and Fig. 5(a) corresponds to the embodiment shown in Figs. 1(a) to (c) and Fig. 2; Fig. 5(b) corresponds to the embodiment shown in Figs. 4(a) to 4(c).

As shown in Fig. 5 (a) and (b), the reel members 1, 1A, and 1B of the present invention have the first and second flange portions 11 having a large diameter effective for the long film (300m to 600m). 12.

Specifically, it is particularly effective that the first and second flange portions 11 and 12 have a diameter of 250 mm to 300 mm, and the gap between the first and second flange portions 11 and 12 is the core shaft portion 2 . The thickness t is from 1.0 mm to 1.3 mm.

In the above case, it is preferable to set the diameter d of the winding core portion 2 to be the diameter of the first and second flange portions 11 and 12 from the viewpoint of securing the necessary rigidity and reducing the weight of the outer peripheral portion of the flange. /2.5) ±10%.

Specifically, from the viewpoint of achieving weight reduction of the outer peripheral portion of the flange, it is preferably set to about 100 mm.

Further, in the case of the embodiment shown in Fig. 5 (a), it is preferable to set the diameter D ₁ of the reinforcing portion 3 to be the first (1) from the viewpoint of securing the necessary rigidity and reducing the weight of the outer peripheral portion of the flange. And the diameter of the second flange portions 11 and 12 is 1.5) ± 10%.

In this case, specifically, the diameter D ₁ of the reinforcing portion 3 is preferably 80 mm to 150 mm. However, from the viewpoint of achieving weight reduction, it is preferably set to about 90 mm.

Further, in the case when the present form of the embodiment, and FIG. 5 (b) shown in the embodiment are not provided i.e. different forms of reinforcing ribs 7, therefore, the reinforcing section diameter D 3 greater than the diameter d ₁ of the core shaft portion 2 of the roll.

On the other hand, in the embodiment shown in Fig. 5 (a) and (b), the ratio H ₁ : H _{2 of the} lightweight portion 4 is preferable from the viewpoint of securing the necessary rigidity and achieving weight reduction of the outer peripheral portion of the flange. It is 5:4~3:2, more preferably 4:3.

Specifically, the size H ₁ of the light-weighting portion 4 on the center side is preferably 1.7 mm to 2.5 mm, and preferably the size H ₂ of the lightweight portion 4 on the outer peripheral side is 1.0 mm to 1.7 mm.

On the other hand, in the case of the embodiment shown in Fig. 5(b), since the reinforcing ribs 7 are provided, the diameter D ₁ of the reinforcing portion 3 of the embodiment shown in Fig. 5(a) can be made smaller. For example, it is set so as to be equal to the diameter d of the winding core portion 2.

In this case, specifically, the diameter D ₂ of the reinforcing portion 3 is preferably 60 mm to 150 mm, but it is preferably set to about 70 mm from the viewpoint of weight reduction.

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

On the other hand, it is preferable to increase the number of the reinforcing ribs 7 as the diameter of the reel becomes larger.

Within the scope of application of the present invention, the number of reinforcing ribs 7 is preferably from 8 to 24, more preferably from 12 to 24.

If the number of reinforcing ribs 7 is less than 8, the reinforcing effect may be insufficient, and therefore, the flange portion may be distorted. On the other hand, if the number of reinforcing ribs 7 is more than 24, the weight will be due to its own weight. However, deflection occurs at the outer peripheral portion of the flange, which may hinder the smooth extraction of the adhesive film 6.

Further, in order to further increase the diameter of the reel member 1, a large number of reinforcing ribs 7 may be provided on the outer peripheral portions of the first and second flange portions 11 and 12.

Further, in the embodiment shown in Fig. 5 (a) and (b), the height h _{2 of the} guide rib 5 is preferably set to 0.4 mm to 0.5 from the viewpoint of securing the necessary rigidity and reducing the weight of the outer peripheral portion of the flange. Mm.

Further, from the viewpoint of preventing the adhesive film from sticking to the rib surface and preventing the adhesive film from falling off to the gap, it is preferable to set the interval between the guide ribs 5 so as to be spaced apart from the width of the adhesive film 6 by 0.05 mm to 0.10 mm ( Void).

On the other hand, it is preferable to increase the number of the guide ribs 5 as the diameter of the reel becomes larger.

Within the scope of application of the present invention, the number of guiding ribs 5 is preferably from 8 to 24, more preferably from 12 to 24.

If the number of the guiding ribs 5 is less than 8, the film 6 is displaced when the film 6 is taken up laterally or transported, and on the other hand, if the number of the guiding ribs 5 is more than 24, At the time of coiling, there is a possibility that the film 6 may be overshot, and at the same time, the risk of the film 6 adhering to the rib surface increases.

Further, in order to further increase the diameter of the reel member 1, a large number of guide ribs 5 may be provided on the outer peripheral portions of the first and second flange portions 11 and 12.

In the above-described embodiment, the reinforcing portion 3 having a constant thickness is provided in the vicinity of the winding core portion 2 of the first and second flange portions 11 and 12, and the first and second flange portions 11 are provided. The inner portion of the outer portion of the flange portion 12 is provided with a lightweight portion 4 which is formed in a tapered shape so as to be thinner than the thickness of the reinforcing portion 3, so that the weight portion 4 is formed in a tapered shape. After the rigidity of the reel members 1 , 1A, and 1B is secured by the reinforcing portion 3, the weight of the outer peripheral portion of the flanges of the first and second flange portions 11 and 12 can be reduced, whereby the reel member can be prevented. 1. Since the weight of the outer peripheral portion of the flange is caused by the weight of 1A and 1B, the accuracy of the gap between the first and second flange portions 11 and 12 can be improved.

Further, in the present embodiment, the lightweight portion 4 is formed in a tapered shape so that the thickness is reduced from the reinforcing portion 3 toward the outer peripheral portion of the flange. Therefore, the weight reduction portion 4 can be easily reduced in weight without greatly impairing the reel. The rigidity of the members 1, 1A, 1B.

Further, in the present embodiment, the inner side surfaces 11a and 12a of the first and second flange portions 11 and 12 are formed to be parallel. Therefore, for example, when the adhesive film 6 is taken out by a human hand, even When the withdrawal direction (angle) deviates from the direction perpendicular to the rotation axis, or the film 6 is twisted, the peeling of the adhesive film 6 can also be suppressed.

Further, in the present embodiment, the guide ribs 5 for guiding the adhesive film 6 are provided in the inner portions of the first and second flange portions 11, 12, and the guide ribs 5 guide the film 6 Since the surface is provided on the surface perpendicular to the rotation direction of the reel member 1, it is possible to surely prevent the meandering of the film 6 at the time of winding and extraction, thereby reliably preventing the winding. Then, the film 6 is peeled off and the like, and the film 6 is pulled or adhered at the time of extraction.

On the other hand, in the embodiment shown in Figs. 4(a) to 4(c), the first and second flange portions 11 are provided on the outer surface of the first and second flange portions 11 and 12 to reinforce the first and second flange portions 11 Further, the reinforcing ribs 7 of 12 can further increase the rigidity of the reel members 1A and 1B, whereby the accuracy of the gap between the first and second flange portions 11 and 12 can be further improved.

[Examples]

Hereinafter, the present invention will be specifically described by way of examples and comparative examples, but the present invention is not limited to the following examples.

<made into film>

An anisotropic conductive adhesive film formed by applying an anisotropic conductive adhesive having a thickness of 30 μm after drying to a release sheet (not shown) having a width of 1.0 mm was used as a bonding film. Further, the type of the adhesive is an epoxy-based thermosetting adhesive.

Here, the lowest melt viscosity of the anisotropic conductive film is 3.0×10 ⁴ Pa. s.

The lowest melt viscosity was measured by a rotary rheometer (TA Instruments), the temperature rise rate was fixed at 10 ° C, the measurement pressure was fixed at 5 g, and the measurement was performed using a measuring plate having a diameter of 8 mm. The value obtained.

<Example 1>

A double-sided flange type reel member is used as a reel member, which is made of a polystyrene resin, and has a diameter of 85 mm and a thickness of 1.25 mm, and the first and The diameter of the second flange portion is 250 mm. This double-sided flange type reel member has the configuration shown in Fig. 2 .

The thickness of the reinforcing portion of the reel member was set to 2.0 mm, and the diameter was set to 185 mm.

Further, the lightweight portion was formed into a flat tapered shape, and the height of the inner peripheral portion of the flange was set to be 2.0 mm which is the same as the thickness of the reinforcing portion, and the thickness of the outer peripheral portion of the flange was set to 1.5 mm.

On the other hand, the height of the guide rib at the outer peripheral portion of the flange is 0.5 mm from the inner side surface of the first and second flange portions.

Further, twelve guide ribs are provided at equal intervals.

An anisotropic conductive adhesive film having a length of 500 m was wound around the above-described reel member as an adhesive film.

<Example 2>

As the reel member, as shown in Fig. 4 (a) and (b), the reinforcing portion having the same diameter as that of the winding core portion and the outer portions of the first and second flange portions are provided with light Quantization section and reinforcing ribs. The dimensions other than the reinforcing portion and the lightweight portion of the reel member are the same as those of the corresponding portion of the first embodiment.

An adhesive film having a length of 500 m was wound around the reel member.

<Example 3>

As the reel member, as shown in FIG. 4(c), the reinforcing portion having a diameter larger than the diameter of the winding core portion and the outer portions of the first and second flange portions are provided with a lightening portion and a reinforcing portion. rib. The other portions of the reel member are the same in size as the corresponding portions of Embodiment 1.

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 weight portion and the reinforcing rib are not provided in the outer portions of the first and second flange portions, and the light is provided inside the first and second flange portions. Quantization unit and guide rib. The size of each portion of the reel member is the same as the size of the corresponding portion of Embodiment 1.

An adhesive film having a length of 500 m was wound around the reel member.

<Comparative Example 2>

As the reel member, as shown in FIG. 7, the reinforcing portion having the same diameter as that of the winding core portion and the outer portions of the first and second flange portions are provided with a weight reducing portion, but are not provided. Reinforcement ribs. The size of each part of the reel member is the same as that of the corresponding part of the second embodiment The same size.

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, the weight portion and the reinforcing rib are not provided in the outer portions of the first and second flange portions. The reel member is constructed from a previous reel member.

An adhesive film having a length of 500 m was wound around the reel member.

<evaluation>

The reel members (film holders) prepared in Examples 1 to 3 and Comparative Examples 1 to 3 were each placed in a room temperature environment for 24 hours, and the first and the third portions of the outer peripheral portion of the flange were measured using a laser reflection type displacement meter. 2 The gap between the flange portions. The measurement results are shown in Table 1.

Further, the extraction speed of 50 g and the extraction speed of 500 mm/sec were repeated, and the film was taken out at intervals of 1 second at the interval of 1 second until the end, and the state of the film at the time of extraction and after the extraction was visually observed (at the time of extraction) Pulling, sticking, falling off).

In this case, the extraction angle of the adhesive film was inclined by 0°, 10°, and 20° with respect to the direction perpendicular to the rotation axis of the reel member, and the film was taken out five times. The results are shown in Table 1.

<evaluation result>

As can be seen from Table 1, in the first embodiment in which the weight portion is larger than the reinforcing portion having the diameter larger than the diameter of the winding core portion and the outer surface of the first and second flange portions, the reinforcing portion and the first and second convex portions are provided. In the second and third embodiments in which the outer side surface of the edge portion is provided with the lightweight portion and the reinforcing rib, the deviation of the gap at the outer peripheral portion of the flange is small (1.15 ± 0.1 mm or less).

In particular, in the third embodiment in which the reinforcing portion having a diameter larger than the diameter of the winding core portion and the outer side surfaces of the first and second flange portions are provided with the lightweight portion and the reinforcing rib, the variation of the gap is very small to 1.15 ± 0.05 mm. .

Further, in Examples 1 to 3, when the film was taken out, no problem occurred.

On the other hand, in the outer portion of the first and second flange portions, the lightweight portion and the reinforcing rib are not provided, and the lightweight portion and the guide rib are provided inside the first and second flange portions. In the case of the case, the deviation of the gap in the outer peripheral portion of the flange is small (1.15 ± 0.1 mm). However, when the extraction angle of the adhesive film is set to 10°, the film is formed twice in the 5 times of the extraction. Take off In the case where the extraction angle was set to 20°, five times of the film peeling occurred five times.

On the other hand, in the case where the reinforcing portion having the same diameter as the diameter of the winding core portion and the outer portions of the first and second flange portions are provided with the lightening portion, and in the case of Comparative Example 2 in which the reinforcing rib is not provided, When the film was taken out, no peeling occurred, but the variation in the gap at the outer peripheral portion of the flange was increased (1.15 ± 0.2 mm), and at the time of extraction, pulling occurred.

Further, when the lightweight portion and the reinforcing rib are not provided in the outer portion of the first and second flange portions, the variation in the gap of the outer peripheral portion of the flange is increased (1.15 ± 0.4 mm), and When pulled out, traction and adhesion occur.

In the case where the extraction angle of the adhesive film is set to 0°, the film peeling occurs twice in the five times of the extraction, and when the extraction angle is set to 10° and 20°, 5 In the second time, the film peeling occurred 5 times.

According to the above results, it has been confirmed that the present invention can prevent the deflection of the outer peripheral portion of the flange caused by the weight of the reel member, improve the accuracy of the gap between the first and second flange portions, and prevent the film from being pulled out. Fall off.

1‧‧‧Reel components

2‧‧‧Rolling shaft part

3‧‧‧Reinforcement Department

4‧‧‧Lighting Department

5‧‧‧Guided ribs

10‧‧‧ drive shaft

11‧‧‧1st flange

11a, 12a‧‧‧ inside

12‧‧‧2nd flange

O‧‧‧Rotation axis

Claims (7)

A reel member comprising: a winding core portion formed in a cylindrical shape and capable of winding up an adhesive film; and first and second flange portions provided at both end portions of the winding core portion And forming the inner side surface in parallel with each other; and providing a reinforcing portion having a predetermined thickness in the vicinity of the winding core portion of the first and second flange portions; and the first and second flange portions The outer side portion is provided with a lightweight portion formed to have a thickness thinner than the thickness of the reinforcing portion, in a portion on the outer peripheral side of the flange with respect to the reinforcing portion. The reel member according to claim 1, wherein the reinforcing portion is formed to have a constant thickness. The reel member according to claim 1, wherein a reinforcing rib for reinforcing the first and second flange portions is provided on an outer surface of the first and second flange portions. The reel member according to the first aspect of the invention, wherein the thickness of the lightweight portion is tapered from the reinforcing portion toward the outer peripheral portion of the flange. The reel member according to claim 1, wherein a guide rib for guiding the adhesive film is provided on an inner side surface of the first and second flange portions. A film container having a reel member including a core shaft portion formed in a cylindrical shape and capable of winding up an adhesive film, and both end portions provided on the winding core portion and having opposite inner side surfaces The first and second flange portions formed in the manner of the first and second flange portions are provided with a predetermined thickness in the vicinity of the winding core portion of the first and second flange portions. And a lightening portion formed to have a thickness thinner than a thickness of the reinforcing portion at a portion of the outer side portion of the first and second flange portions and the outer peripheral portion of the flange portion with respect to the reinforcing portion And a film that is wound around the winding core 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.