JPH11106099A - Manufacture of stacked film and winding device therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To wind a stacked film with low tension and prevent the surface printing of the stacked film caused by heat treatment after being wound by setting the stacked film wound in a roll in an unwinding section in the vertical direction and winding the same in a roll in a winding section set in the vertical direction while delivering it. SOLUTION: A stacked film 11 delivered from a stacked film roll 1 set in an unwinding section 2 is wound as a stacked film 1' wound in a roll in a winding section 3 in the vertical direction. In other words, the stacked film roll 1 is placed in the unwinding section 2 in the vertical direction, a moving arm 4 is moved toward the film winding core part of the unwinding section 2 and mechanically stopped in a center place. Then, air cylinders 5 attached to upper and lower sides are moved, a core 7 located in a roll center is pressed by a core support holder 6, and the stacked film roll 1 is set in the vertical direction. Similarly, the core 7' of the winding section is set in the center of the winding section 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a method for manufacturing a laminated film and a winding device.

[0002]

2. Description of the Related Art Conventionally, a film or sheet (hereinafter, referred to as a film or a sheet)
In the case of winding up a film or a sheet, the film or sheet wound up in a roll is usually fed out from a horizontal direction and wound up in a roll in a horizontal direction (Japanese Patent Publication No. 6-45410).

[0003]

However, if the roll wound horizontally is subjected to heat treatment as it is, there is a problem that the expansion of the film causes a so-called film pattern to appear. This problem is particularly remarkable in the case of a laminated film. For example, when a single-sided copper-clad laminated film is subjected to heat treatment in a heat treatment step, skin image such as tape-fixed image of the core portion due to expansion of the core of the laminated film and the core portion, and in a horizontal winding mode in which the film is wound on a horizontal roll, It cannot be used as a product over several hundred meters in length from the core toward the surface.

[0004] The inventors of the present invention have studied to reduce the general winding tension of 5,000 to 20,000 g / m, which is a general winding tension when wound up on a horizontal roll, by reducing the tension.
However, if the winding tension in horizontal winding is reduced to, for example, about 600 to 3000 g / m, the wound laminated film leans and cannot be wound uniformly. In other words, when wound horizontally with low tension, the laminated film meanders, and the rolled wound shape becomes an elliptical shape with a smaller diameter on the upper side and a larger diameter on the lower side with respect to the winding axis. In addition, wrinkles got inside and the end faces became uneven. That is, when the tension is set to be high, skin appearance occurs, and when the tension is set to be low, problems such as wrinkles and uneven end faces occur.

The present inventors have further studied and found that these problems can be solved at once by vertically winding the laminated film, that is, winding the laminated film into a winding portion set in a vertical direction. By winding the laminated film by vertical winding, even after the processing after winding, for example, the roll is heated as it is, it becomes possible to wind with low tension by vertical winding, so even if the film expands There is no so-called film appearance on the film.

[0006]

That is, according to the present invention, a laminated film wound in a roll shape is set in a winding portion in a vertical direction, and is wound in a roll shape on a winding portion set in a vertical direction while being unreeled. A method for manufacturing a laminated film, comprising: a winding portion for vertically setting a laminated film wound in a roll shape; and a winding portion set in a vertical direction for winding the laminated film in a roll shape. It is a winding device characterized by the above-mentioned.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be specifically described below with reference to FIGS. FIG. 1 is a plan view of one embodiment of a laminated film winding device according to the present invention, and FIG. 2 is a front view of one embodiment of a laminated film winding device.

Reference numerals 1 and 1 ′ denote a laminated film wound in a roll set in the vertical direction, that is, a roll of a laminated film, 11 denotes a laminated film, 2 denotes an unwinding portion, 3 denotes a winding portion, and 4 and 4 'Is a moving arm, 5 and 5' are air cylinders, 6 and 6 'are core support holders, and 7 and 7' are cores, which are provided vertically. The laminated film 11 unwound from the roll 1 of the laminated film set in the unwinding section 2 is wound up by the winding section 3 in the vertical direction as a laminated film 1 'wound on the roll. That is, the roll 1 of the laminated film is placed vertically on the unwinding unit 2, the moving arm 4 is moved toward the core of the film of the unwinding unit 2 and mechanically stopped at the center,
The upper and lower air cylinders 5 are moved to hold the core 7 at the center of the roll by the core support holder 6, and the roll 1 of the laminated film is set vertically. Similarly, the core 7 ′ of the winding section is set at the center of the winding section 3.
The laminated film 11 unwound from the roll 1 of the laminated film is affixed to the core 7 'with a tape, and the unwinding tension controller 8 preferably adjusts the winding tension range to 600 to 300.
It is set to 0 g / m, and the core 7 ′ is softly wound in a vertical direction at a speed of, for example, 50 to 100 m / min by the winding motor 9 while controlling the tension at a constant value.

The laminated film used here is not particularly limited, but has a three-layer structure including an adhesive layer such as an upper layer / adhesive layer / lower layer or an upper layer / adhesive layer / middle layer / adhesive layer / lower layer. In addition, a five-layer structure can further exert the effects of the present invention. Further, when a metal layer is contained in the laminated film, the problem of skin appearance is likely to occur, but the present invention can effectively solve the problem. The most preferable configuration for achieving the effects of the present invention is a configuration of metal layer / adhesive layer / resin layer, or metal layer / adhesive layer / resin layer / adhesive layer / metal layer. As a preferred metal layer, for example, a copper foil is used.
The metal layer can be replaced with a paper or resin layer. In the case of a metal layer / adhesive layer / resin layer or a metal layer / adhesive layer / resin layer / adhesive layer / metal layer, the thickness of the metal layer is 10 to 100 μm, and the thickness of the adhesive layer is 10 to 50.
μm, and the thickness of the resin layer is preferably 10 to 200 μm. When the paper or resin layer / adhesive layer / resin layer is used, the thickness of the paper or resin layer is 10 to 200.
μm, the thickness of the adhesive layer is 10 to 50 μm, and the thickness of the resin layer is 10 to 200 μm.

[0010] The rolled-up laminated film thus obtained can be uniformly and softly rolled without having an elliptical shape, wrinkles, or uneven end faces.

Further, the rolled laminated film thus softly wound up vertically is transferred to a heating treatment step while being kept vertical, and is subjected to a heat treatment at a temperature of 150 ° C. for 5 hours. It is possible to obtain a laminated film having excellent flatness without defects such as image transfer and skin image transfer.

[0012]

【Example】

Example 1 A long laminated film obtained by laminating a polyimide film having a thickness of 25 μm and a copper foil tape having a thickness of 18 μm via an adhesive was wound into a roll by a horizontal winding. This roll-shaped laminated film has a thickness of 60 μm, a diameter of 300 mm, and a width of 520 mm.
Met. This roll-shaped laminated film was vertically fixed on a turntable at the unwinding portion. On the other hand, a dedicated winding core of 300 mm was vertically fixed also on the turntable of the winding section, and the tip of the base material was pulled out and stuck to the winding core. Speed 7 for the winding section and turntable
By rotating at 0 m / min, the turntable of the unwinding section was rotated with the rotation. The laminated film was wound around a diameter core while controlling the winding tension to a low tension of 850 g. The wound substrate was softly wound, and the difference between the ends was 1 mm or less at the end, and the end was uniform without any winding disorder. The roll-shaped laminated film softly and vertically wound in this manner was transferred to a heat treatment step while maintaining the vertical state.
Heat treatment was performed at 50 ° C. for 5 hours. The obtained laminated film was a laminated film having excellent flatness with no defects such as tape stop image at the deep part of the roll and skin image.

[0013]

According to the present invention, the laminated film can be set on the unwinding portion in the vertical direction, and can be wound with a low tension while being unwound, and the appearance of the laminated film due to the heat treatment after winding can be prevented.

[Brief description of the drawings]

FIG. 1 is a plan view of a winding device for a laminated film according to the present invention.

FIG. 2 is a front view of a winding device for a laminated film.

[Explanation of symbols]

 1, 1 ': roll-shaped laminated film 2: unwinding section 3: rewinding section 4, 4': moving arm 5, 5 ': air cylinder 6, 6': core support holder 7, 7 ': core 8: winding Output tension control device 9: Winding motor 11: Laminated film

Claims (5)

[Claims] 1. A method of manufacturing a laminated film, comprising: setting a laminated film wound in a roll shape in a winding portion in a vertical direction, and winding the film in a roll shape on a winding portion set in a vertical direction while unreeling. Method. 2. The method for producing a laminated film according to claim 1, wherein the laminated film is heated after being wound. 3. The method for producing a laminated film according to claim 1, wherein the laminated film is softly wound into a roll. 4. The tension range for winding the laminated film is 60.
2. The weight ratio is from 0 to 3000 g / m.
A method for producing the laminated film as described above. 5. A winding having an unwinding part for vertically setting a laminated film wound in a roll and a winding part set in a vertical direction for winding the laminated film into a roll. Taking device.