KR20220012423A - Reel member, film container, and method for manufacturing film container - Google Patents

Abstract

An object of the present invention is to provide a technique capable of smoothly taking out a very long adhesive film by winding it around a reel member. The reel member (1) of the present invention is formed in a cylindrical shape and includes a core shaft portion (2) for winding an adhesive film and first and second flange portions (11, 12) provided at both ends of the core shaft portion (2). and a shaft core having a cylindrical driving shaft support portion 4a disposed concentrically with the winding core shaft portion 2 in the winding core shaft portion 2 and fixed to the first and second flange portions 11 and 12 . A part (4) is provided. An adhesive film is wound around the core shaft portion 2 of the reel member 1 by traverse winding.

Description

A reel member, a film container, and the manufacturing method of a film container TECHNICAL FIELD

This invention relates to the technique of the reel member for winding up and taking out a series of elongate adhesive films, such as for tab wire bonding of a solar cell.

BACKGROUND ART A long adhesive film for bonding various electronic components and the like has been known.

Such an adhesive film is formed on a narrow and long release sheet, and is shipped in the form wound up in roll shape on a reel member.

By the way, in recent years, lengthening of such an adhesive film has been desired, but when the adhesive film is lengthened, the stress generated in the adhesive film due to an increase in the diameter of the film roll increases, especially in the winding core part, so the adhesive in the adhesive film is pushed out There is a problem that there is a possibility that it may adhere to the flange portion.

With respect to such a problem, there is a possibility that the above-mentioned problem can be solved by forming a wide core shaft portion of the reel member and winding the adhesive film in so-called traverse winding.

However, when the adhesive film is wound by traverse winding, a large force acts on the core shaft part due to the stress of the adhesive film wound on the core shaft part, and deformation occurs in the core shaft part, so that it cannot be mounted on the drive shaft of the take-out device. there is a problem.

On the other hand, it is conceivable to prevent deformation of the core shaft part by using a hard material such as iron or SUS for the core shaft part. While there is a need, there is a problem that a large force is required at the time of winding up and taking out the adhesive film.

Further, as prior art documents related to the present invention, there are, for example, those shown below.

Japanese Patent Laid-Open No. 2011-11792

The present invention has been made in consideration of such prior technical problems, and an object thereof is to provide a technique capable of smoothly taking out a very long adhesive film by winding it around a reel member.

The present invention made in order to achieve the above object is formed in a cylindrical shape, and a core shaft portion that can be wound with an adhesive film, first and second flange portions provided at both ends of the core shaft portion wound, and the winding core shaft portion in the It is a reel member provided with the shaft core part which is arrange|positioned concentric with the said winding-up core shaft part, and has the cylindrical drive shaft support part fixed to the said 1st and 2nd flange part.

In the present invention, it is effective even when the diameter of the core shaft portion is 50 to 120 mm.

In the present invention, it is effective even when the width of the core shaft portion is 20 to 100 mm.

In the present invention, it is effective even when the thickness of the first and second flange portions is 1.5 to 5 mm.

In this invention, it is effective also when the diameter of the drive shaft support part of a shaft core part is 18.0-26.0 mm.

Moreover, this invention is a film container which has the above-mentioned reel member and the adhesive film wound by the traverse winding on the core-shaft part of the said reel member.

On the other hand, the present invention is a method for manufacturing any of the above-described film receptors, in which the above-described reel member is mounted on a winding drive shaft, the tip of the adhesive film supplied from a film supply source is attached to the winding core shaft portion, and the winding drive shaft In a state in which the adhesive film is pressed against the winding core shaft portion of the reel member by an elastic pressure roller having a rotation axis parallel to the It is a manufacturing method of the film container which has the process of winding the said adhesive film to the width|variety equivalent to the width of the said pressure roller by traverse winding to the winding-up core shaft part of the said reel member by guiding in the drive shaft direction.

In the case of the reel member and the film container of the present invention, since the shaft core part having the drive shaft support part is fixed to the first and second flange parts in the space within the core shaft part, the adhesive film is wound around the core shaft part to form the adhesive film. Even when a large force is applied to the core shaft portion due to stress, deformation does not occur in the shaft core portion.

As a result, according to the present invention, for example, when a reel member (film receptor) wound with an adhesive film by traverse winding is mounted on the drive shaft of the take-out device, mounting can be performed without problems, so that a very long adhesive film is wound. A film receptor may be provided.

In addition, according to the present invention, since each part constituting the reel member can be manufactured by molding resin, the weight is small compared to the case where a hard material such as iron or SUS is used. It is not necessary to increase the rigidity, and a large force is not required at the time of winding up and taking out the adhesive film.

On the other hand, in the case of normal traverse winding, since there is a possibility that the film or the like may fall off (winding collapse) at the end of the roll, the winding width cannot but narrow as it goes to the upper layer of the roll, but the method of the present invention In the case of , in a state in which the adhesive film is pressed against the core shaft portion of the reel member by an elastic pressure roller, the winding drive shaft is rotated in the winding direction, and the adhesive film is guided in the winding drive shaft direction by the guide. Since the adhesive film is wound with a width equal to the width of the pressure roller by traverse winding on the core shaft of the can further increase the length of the adhesive film.

Advantageous Effects of Invention According to the present invention, it is possible to provide a film receptor capable of winding and smoothly withdrawing a very long adhesive film.

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

Fig. 1 (a) is a front view showing the configuration of an embodiment of a reel member according to the present invention, and (b) is a side view of the same reel member.
Fig. 2(a) is a cross-sectional view taken along line BB of Fig. 1(b), and (b) is a cross-sectional view taken along line AA of Fig. 1(a).
Fig. 3 (a), (b) is an explanatory view schematically showing the dimensional relationship between the reel member and the film container according to the present invention, Fig. 3 (a) is a front view, Fig. 3 (b) is It is a side view.
Fig.4 (a) is a front view which shows the structure of embodiment of the film container which concerns on this invention, (b) is an internal side view of the same film container.
5(a) and 5(b) are explanatory views showing the intervals between the adhesive films wound around the core shaft portion of the reel member of the present invention.
6 is a view (first) showing an example of a method for manufacturing a film receptor of the present invention.
7(a), (b) is a figure (second) which shows the example of the manufacturing method of the film receptor of this invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

Although this invention is not specifically limited, It is suitable for a long adhesive film.

It is suitable that the width of this adhesive film is 0.6-3.0 mm, and it is suitable that the thickness of the adhesive bond layer formed on the base material is 10-50 micrometers.

In addition, it is suitable that the minimum melt viscosity of the adhesive is 1×10 ³ to 5.0×10 ⁵ Pa·s.

Moreover, although applicable also to a so-called two-layer type thing which does not have a peeling film on an adhesive bond layer, from a viewpoint of blocking prevention at the time of film extraction, it becomes especially effective to a so-called 3-layer type thing in which a peeling film is provided on an adhesive bond layer.

Fig. 1 (a) is a front view showing the configuration of an embodiment of a reel member according to the present invention, and Fig. 1 (b) is a side view of the same reel member.

Also, Fig. 2(a) is a cross-sectional view taken along line B-B of Fig. 1(b), and Fig. 2(b) is a cross-sectional view taken along line A-A of Fig. 1(a).

The reel member 1 of this embodiment contains resin, such as polystyrene and polycarbonate, for example, and is attached to the drive shaft of a film take-up apparatus or film take-out apparatus (not shown).

This reel member 1 has a cylindrical core shaft portion 2 on which an adhesive film is wound.

Disc-shaped first and second flange portions 11 and 12 are respectively fixed to both ends of the core shaft portion 2 .

In the case of this embodiment, the 1st and 2nd flange parts 11 and 12 are formed so that it may orthogonally cross with respect to the rotation axis of the said drive shaft, and have the same structure.

A cylindrical shaft core part 4 is provided in the inside 3 of the winding core shaft part 2 .

This shaft core part 4 has a smaller diameter than the core shaft part 2, is arranged concentrically with the core shaft part 2, and is fixed to the inner wall parts of the first and second flange parts 11 and 12. .

Then, holes 5 and 6 are respectively formed in the first and second flange portions 11 and 12 so as to correspond to the drive shaft support portion 4a of the inner wall portion of the shaft core portion 4, and these hole portions ( 5, 6) is inserted into the drive shaft and supported by the drive shaft support portion 4a, so that the reel member 1 is configured to run on the drive shaft.

3A and 3B are explanatory views schematically showing the dimensional relationship of the reel member according to the present invention, wherein FIG. 3A is a front view, and FIG. 3B is a side view.

In the case of the present invention, the diameter (outer diameter) of the first and second flange portions 11 and 12 of the reel member 1 is D, and the thickness of the first and second flange portions 11 and 12 is W1, Let it be W2.

In addition, let the diameter (outer diameter) of the core shaft part 2 be d1, let thickness be w1, and let width be W.

In addition, let the diameter (inner diameter) of the drive shaft support part 4a of the shaft core part 4 be d2, let the thickness be w2.

In the case of this invention, although it does not specifically limit, From a viewpoint of space saving when attaching a reel, the diameter D of the 1st and 2nd flange parts 11 and 12 of the reel member 1 is set to 125-200 mm. It is preferable to do

In addition, in the case of the present invention, although not particularly limited, from the viewpoint of space saving when attaching a reel, the thicknesses W1 and W2 of the first and second flange portions 11 and 12 are set to 1.5 to 5.0 mm. desirable.

Moreover, in the case of this invention, although it does not specifically limit, From a viewpoint of space saving at the time of attaching a reel, the width W of the core shaft part 2 of the reel member 1 (first and second flange parts 11, 12)) is preferably set to 20 to 100 mm.

In this case, the roll width w of the adhesive film 10 wound around the core shaft portion 2 is 0.05 to 2.0 mm smaller at both ends than the width W of the core shaft portion 2 from the viewpoint of preventing the winding collapse. It is preferable to set it so that

In addition, although it is not particularly limited, from the viewpoint of securing the necessary rigidity when a long adhesive film is wound, the diameter d1 of the core shaft portion 2 of the reel member 1 is preferably set to 50 to 120 mm, The thickness w1 of the core shaft part 2 is preferably set to 1.5 to 5.0 mm.

Further, in the case of the present invention, although not particularly limited, the diameter of the drive shaft support portion 4a of the shaft core portion 4 of the reel member 1 is from the viewpoint of ensuring the necessary rigidity at the time of winding and drawing out the long adhesive film. d2 is preferably set to 18.0 to 26.0 mm, and the thickness w2 of the shaft core part 4 is preferably set to 1.0 to 2.5 mm.

The reel member 1 of the present invention can be manufactured by various methods.

For example, it can be manufactured by manufacturing the first and second flange portions 11 and 12, the winding core shaft portion 2, and the shaft core portion 4 by injection molding or the like, respectively, and fixing them by thermal welding or the like. .

Moreover, the above-mentioned reel member 1 can be manufactured also by integral molding.

Fig.4 (a) is a front view which shows the structure of embodiment of the film container which concerns on this invention, (b) is an internal side view of the same film container.

As shown in Fig. 4(a), (b), in the film container 7 of the present embodiment, the adhesive film 10 is traversed to the core shaft portion 2 of the reel member 1 described above. it is cold

Here, traverse winding means winding the elongate adhesive film 10 on the core shaft part 2 of the reel member 1 in a spiral shape with a predetermined pitch (interval) in multiple layers.

5(a) and 5(b) are explanatory views showing the intervals between the adhesive films wound around the core shaft portion of the reel member of the present invention.

In the present invention, the adhesive film 10 is wound on the core shaft portion 2 of the reel member 1 so that the interval between the adjacent adhesive films 10 is a predetermined value p (Fig. 5(a)), Further, on these adhesive films 10, the adhesive films 10 are overlapped and wound so that the interval between the adjacent adhesive films 10 becomes a predetermined value (FIG. 5(b)).

In this case, although the space|interval p of the adjacent adhesive film 10 is not specifically limited, It is preferable to set so that it may become 0.05-0.1 mm.

When the interval p between the adjacent adhesive films 10 is less than 0.05 mm, there is a fear that the adjacent adhesive films 10 are adhered to each other by the adhesive protruding in the film width direction. On the other hand, if it is larger than 0.1 mm, the adhesive film ( When winding 10), there is a fear that winding collapse may occur, and in the case of the two-layer type, the adhesive film 10 of the upper and lower layers may contact due to the gap between the adjacent adhesive films 10, and blocking may occur.

6 and 7 (a), (b) shows an example of the manufacturing method of the film receptor of this invention.

In order to manufacture the film container 7 mentioned above, what is necessary is just to use the film winding apparatus shown in FIG. 6, for example.

This film take-up apparatus has a take-up drive shaft 24, and is comprised so that the reel member 1 mentioned above may be attached to this take-up drive shaft 24. As shown in FIG.

In the vicinity of the winding drive shaft 24, a pressure roller 23 made of, for example, an elastic material such as silicone rubber and capable of pressing with a predetermined force against the winding core shaft portion 2 of the reel member 1 is provided. have.

The pressure roller 23 rests on a rotating shaft 22 provided parallel to the winding drive shaft 24 . Then, the winding drive shaft 24 or the rotation shaft 22 is rotationally driven by a drive mechanism (not shown), and the adhesive film wound around the core shaft portion 2 of the reel member 1 mounted on the winding drive shaft 24 ( 10) is configured such that both the winding drive shaft 24 and the rotation shaft 22 are driven by the frictional force.

In this case, the width of the pressure roller 23 is smaller than the width W of the core shaft portion 2 of the reel member 1 (see FIG. 3 ), and from the viewpoint of preventing the adhesive film 10 from falling off, the adhesive film ( It is preferable to set it equal to the roll width w of 10) (the same or 0 to -1.0 mm).

Further, in the vicinity of the pressure roller 23, a guide roller 21 having a guide groove 21a (refer to FIGS. 7(a) and (b)) on its surface is provided, and this guide roller 21 is It is configured to be driven by a guide roller drive shaft 20 installed parallel to the winding drive shaft 24 and movable in its axial direction.

When the adhesive film 10 is wound on the reel member 1 using this film winding device, the adhesive film 10 drawn out from a film supply source (not shown) is inserted into the guide groove 21a of the guide roller 21 . It passes through the pressure roller 23 and passes between the core shaft portion 2 and the pressure roller 23 of the reel member 1 and crosses at an angle to form an adhesive film on one end of the core shaft portion 2 ( 10) is attached to the tip.

In this state, the winding drive shaft 24 or the rotation shaft 22 is rotated in the winding direction.

In this case, as shown in FIGS. 7A and 7B , while the adhesive film 10 is pressed against the core shaft portion 2 of the reel member 1 by the pressure roller 23 , the guide roller The drive shaft 20 is moved in its axial direction, and the adhesive film 10 is moved from one end of the winding core shaft part 2 to the other end in the winding drive shaft 24 direction.

And by repeating this operation|movement, the adhesive film 10 is wound up by traverse winding on the core-shaft part 2 of the reel member 1 .

Moreover, in this embodiment, in the both ends of the roll of the adhesive film 10, the operation|movement of the guide roller drive shaft 20 is controlled so that the adhesive film 10 may overlap with one-layer space|interval.

In the case of the reel member 1 and the film container 7 of the present embodiment described above, the shaft core portion 4 having the drive shaft support portion 4a is the first and the shaft core portion 4 in the interior 3 in the core shaft portion 2 Since it is fixed to the second flange portions 11 and 12 , the adhesive film 10 is wound around the core shaft portion 2 , and a large force acts on the core shaft portion 2 by the stress of the adhesive film 10 . Even in one case, deformation does not occur in the shaft core part 4 .

As a result, according to the present embodiment, when the reel member 1 wound with the adhesive film 10 by traverse winding is mounted on the drive shaft of the take-out device, the mounting can be performed without any problem, so the very long adhesive film 10 ) can provide a wound film receptor 7 .

In addition, according to this embodiment, since each part constituting the reel member 1 can be produced by molding resin, the weight is small compared to the case where a hard material such as iron or SUS is used, as a result, It is not necessary to increase the rigidity of the reel mounting device, and a large force is not required at the time of winding up and taking out the adhesive film 10 .

On the other hand, in the case of normal traverse winding, since there is a possibility that drop-off (winding collapse) may occur at the end of a roll such as a film, the winding width cannot but narrow as it goes to the upper layer of the roll. In the case of the method, while the adhesive film 10 is pressed against the winding core shaft portion 2 of the reel member 1 by the elastic pressure roller 23, the winding drive shaft 24 is rotated in the winding direction and at the same time , by guiding the adhesive film 10 in the direction of the winding drive shaft 24 by the guide roller 21, traverse winding the adhesive film 10 on the winding core shaft portion 2 of the reel member 1 by a pressure roller ( 23), since the adhesive film 10 does not fall off at both ends of the roll of the adhesive film 10, the number of turns can be maximized, so that the reel member 1 It is possible to further increase the length of the wound adhesive film 10 .

Thus, according to this embodiment, the film container 7 which can wind up and take out the very long adhesive film 10 smoothly can be provided, and in the attachment process of the adhesive film 10, the reel member ( 1) It is not necessary to replace frequently, and production efficiency can be greatly improved.

In addition, this invention is not limited to embodiment mentioned above, A various change can be made.

For example, in the above-described embodiment, the shaft core portion 4 of the reel member 1 was formed into a cylindrical shape of an integral configuration, but the present invention is not limited thereto, and the first and second flange portions 11 , 12) may be provided with a separate shaft core.

Further, depending on the length of the adhesive film 10 and the thickness of the first and second flange portions 11 and 12 , the holes 5 and 6 formed in the first and second flange portions 11 and 12 are formed. The drive shaft support may be constituted by the inner wall of the

Example

Hereinafter, the present invention will be specifically described with reference to Examples and Comparative Examples, but the present invention is not limited to the following Examples.

As an adhesive film, what formed the adhesive bond layer of 30 micrometers in thickness on the base material containing PET of width 1mm was used.

Here, the adhesive contains an epoxy resin, and its minimum melt viscosity is 7.0×10 ³ Pa·s.

This minimum melt viscosity is measured using a rotary rheometer (manufactured by TA Instruments), a temperature increase rate of 10° C./min, a measurement pressure of 5 g, and a measurement plate with a diameter of 8 mm maintained constant. is one value.

<Example>

As a reel member, the thing of the structure shown to Fig.1 (a), (b) containing polystyrene resin was used.

Here, the width of the core shaft portion is 50 mm, the diameter is 65 mm, the thickness is 5 mm, the diameter of the shaft core portion is 25 mm, the thickness is 5 mm, the diameters of the first and second flange portions are 135 mm, and the thickness is A thing of 3.0 mm was used.

About this reel member, the adhesive film was wound 300 m, 500 m, 2000 m, and 5000 m by traverse winding by the method shown to Fig.6 and Fig.7 (a), (b), respectively.

In this case, the space|interval of the adhesive film which adjoins was made into 0.05 mm.

<Comparative Example 1>

Using the same reel member as in the Example except that the core shaft part was not formed, the adhesive film was wound around the shaft core part by traverse winding under the same conditions as in Examples 300 m, 500 m, 2000 m, and 5000 m, respectively.

<Comparative Example 2>

As the reel member, a conventional one made of polystyrene resin and having a diameter of 18.5 mm and a thickness of 5.35 mm of a shaft core portion, and a diameter of 250 mm and a thickness of the first and second flange portions of 2.1 mm was used.

About this reel member, 300 m, 500 m, 2000 m, and 5000 m of the adhesive films mentioned above were wound up by a normal method, respectively.

<Evaluation>

After leaving the film container produced by the Example and Comparative Examples 1 and 2 to stand in the state of horizontal arrangement|positioning for 24 hours at room temperature, respectively, it was confirmed whether it could be attached to the drive shaft of a film take-out apparatus.

In addition, with respect to what was attached to the drive shaft of the film take-out device, it was taken out under the conditions of an environmental test temperature of 30° C., a tensile rate of 4000 mm/min, and a pull-out tension of 50 g, and the state of the adhesive film after drawing out (blocking, adhesive protrusion) presence or absence) was visually observed. These results are shown in Table 1.

<Evaluation result>

As is clear from Table 1, in the case of Comparative Example 1 of the configuration in which the winding core shaft part is not provided, when the winding length of the adhesive film is short as 300 m or 500 m, no problem occurs at the time of film withdrawal, but the adhesive film When the length of the film was increased to 2000 m or 5000 m, the reel member could not be mounted on the drive shaft of the film take-out device due to the deformation of the shaft core.

On the other hand, in the case of Comparative Example 2 using a reel member of the conventional configuration, when the winding length of the adhesive film was short as 300 m or 500 m, no problem occurred during film withdrawal, but the winding length of the adhesive film was long at 2000 m and 5000 m. In this case, blocking and extrusion of the adhesive occurred, and a film receptor could not be formed.

On the other hand, in the Example, even when the winding length of the adhesive film was increased to 5000 m, the reel member could be attached to the drive shaft of the film take-out device, and blocking and sticking of the adhesive did not occur.

From the above result, the effect of this invention was able to be demonstrated.

One… no reel
2… winding core shaft
3… inside
4… shaft core
4a… drive shaft support
7… film receptor
10… adhesive film
11… first flange portion
12… 2nd flange part

Claims (13)

A core shaft portion formed in a cylindrical shape and capable of winding an adhesive film, and
first and second flange portions provided at both ends of the winding core shaft portion;
and a shaft core portion disposed concentrically with the winding core shaft portion in the core shaft portion and having a cylindrical driving shaft support portion fixed to the first and second flange portions;
The winding core shaft portion, the first and second flange portions, and the shaft core portion are manufactured by molding a resin,
The winding core shaft portion has a diameter of 50 to 120 mm and a width of 20 to 100 mm,
A reel member having a thickness of 1.5 to 5 mm of the first and second flanges. The reel member according to claim 1, wherein the core shaft portion, the first and second flange portions, and the shaft core portion are fixed to each other. The reel member according to claim 1 or 2, wherein the minimum melt viscosity of the adhesive of the adhesive film is 1×10 ³ to 5.0×10 ⁵ Pa·s. The reel member according to claim 1 or 2, wherein the adhesive film has a width of 0.6 to 3.0 mm. The reel member according to claim 1 or 2, wherein the adhesive film has a thickness of 10 to 50 µm of an adhesive layer formed on the substrate. The reel member according to claim 1 or 2, wherein the roll width of the adhesive film wound around the core shaft portion is 0.05 to 2.0 mm smaller at both ends with respect to the width of the core shaft portion. The reel member according to claim 1 or 2, wherein the adhesive film is wound on the core shaft portion so that an interval between adjacent adhesive films is 0.05 to 0.1 mm. The reel member according to claim 1 or 2, wherein the diameter of the driving shaft support portion of the shaft core portion is 18.0 to 26.0 mm. A film container comprising: the reel member according to claim 1; and an adhesive film wound by traverse winding on a core shaft portion of the reel member. The film container according to claim 9, wherein the minimum melt viscosity of the adhesive of the adhesive film of the reel member is 1×10 ³ to 5.0×10 ⁵ Pa·s. The film receptor according to claim 9 or 10, wherein the width of the adhesive film of the reel member is 0.6 to 3.0 mm. The film receptor according to claim 9 or 10, wherein the adhesive film of the reel member has a thickness of 10 to 50 µm of an adhesive layer formed on the substrate. A method for producing the film receptor according to claim 9,
The reel member according to claim 1 is mounted on the winding drive shaft, and the tip of the adhesive film supplied from the film supply source is attached to the winding core shaft portion,
In a state in which the adhesive film is pressed to the winding core shaft portion of the reel member by an elastic pressure roller having a rotation shaft parallel to the winding drive shaft, the winding drive shaft is rotated in the winding direction, and the adhesive film is guided by a guide. and winding the adhesive film to a width equal to the width of the pressure roller by traverse winding to the winding core shaft portion of the reel member by guiding in the winding drive shaft direction.

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