JP6976074B2 - Manufacturing method of transport device and laminate - Google Patents

Description

The present invention relates to a transport device for transporting sheet-shaped members and a method for manufacturing a laminated body.

The sheet-shaped member is used in various fields such as a suction member, a printed wiring board, and an optical member. Such a sheet-shaped member is often conveyed by using a belt-shaped member in a manufacturing process of a laminated body including the sheet-shaped member.
However, when the sheet-shaped member is conveyed using the belt-shaped member, the sheet-shaped member may flutter. When the sheet-shaped member flutters, the sheet-shaped member may be curled or wrinkled.
In recent years, thin sheet-shaped members have been widely used, and thin sheet-shaped members are particularly prone to wrinkles and curls. If wrinkles, curls, etc. occur on the sheet-shaped member, the work efficiency may deteriorate and the yield of the product may be adversely affected.

For example, Patent Document 1 (Japanese Unexamined Patent Publication No. 2008-53572) discloses a prepreg sheet fixing device as an attempt to suppress the occurrence of wrinkles in a prepreg sheet used for manufacturing a multilayer printed wiring board.
Specifically, a prepreg sheet fixing device consisting of a suction stage for vacuum-sucking the prepreg sheet and a moving part for grasping the peripheral portion of the prepreg sheet and moving the prepreg sheet onto the suction stage is used. A prepreg sheet fixing device is disclosed in which the suction stage has a plurality of vacuum suction portions that independently vacuum suction with a time lag (claim 1 of Patent Document 1).

Japanese Unexamined Patent Publication No. 2008-535772

However, in the case of the technique disclosed in Patent Document 1 in which the peripheral portion of the prepreg sheet is grasped and adsorbed on the adsorption stage, the sheet-like member may not be placed in a flat state and transported. Further, in the case of the fixing device disclosed in Patent Document 1, there is a problem that wrinkles generated during transportation cannot be removed.

Further, in recent years, the thickness of the sheet-shaped member has become thinner. For example, some of the sheet-shaped members used for the optical laminate have a thickness of 50 to 300 μm, and can be conveyed in a flat state and wrinkled. There is a demand for a transport device capable of reducing or suppressing the occurrence of wrinkles and smoothing out wrinkles that have stopped.

Therefore, the present invention provides a transport device capable of transporting a sheet-shaped member in a flat state, suppressing the occurrence of wrinkles on the sheet-shaped member, and smoothing out wrinkles existing on the sheet-shaped member. The purpose. Further, the present invention provides a method for manufacturing a laminated body, which comprises transporting a sheet-shaped member using such a transport device.

The present invention includes:
[1] A transport device for transporting sheet-shaped members.
A belt-shaped member for mounting a sheet-shaped member and transporting it in the transport direction, and a belt-shaped member having a plurality of holes penetrating in the thickness direction.
It is a suction part arranged on the side opposite to the side on which the sheet-shaped member is placed with respect to the belt-shaped member, and by sucking the surrounding atmosphere, the suction force through the hole of the belt-shaped member is used to form a sheet. It has a suction portion that holds the member against the belt-shaped member, and the suction force acting on the sheet-shaped member when the sheet-shaped member is conveyed differs in at least two regions of the sheet-shaped member. A transport device having an area.
[2] The transport device according to [1], wherein the suction force acting on the region on the downstream side of the sheet-shaped member is larger than the suction force acting on the region on the upstream side of the sheet-shaped member in the transport direction.
[3] The transport device according to [1] or [2], wherein the suction force acting on the sheet-shaped member is distributed stepwise in a direction parallel to the transport direction.
[4] The transport device according to [3], wherein the suction unit includes a plurality of suction units according to the steps.
[5] The transport device according to [1] or [2], wherein the suction force acting on the sheet-shaped member is continuously distributed in a direction parallel to the transport direction.
[6] The transport device according to any one of [1] to [5], wherein the suction force acting on the sheet-shaped member differs in at least two regions perpendicular to the transport direction.
[7] A roll arranged above the side on which the sheet-shaped member is placed with respect to the belt-shaped member, and the roll rotates on the belt-shaped member when the sheet-shaped member is conveyed. The transport device according to any one of [1] to [6], further comprising a roll arranged so as to be in contact with the sheet-like member.
[8] A method for manufacturing a laminate having a first sheet-shaped member and a second sheet-shaped member, the first using the transport device according to any one of [1] to [7] above. A method for manufacturing a laminated body, which comprises transporting the sheet-shaped member of the above and laminating the first sheet-shaped member and the second sheet-shaped member.
[9] A method for manufacturing a laminated body having a sheet-shaped member and a long-shaped member, wherein the sheet-shaped member is conveyed by using the conveying device according to any one of [1] to [7]. A method for manufacturing a laminated body, which comprises laminating the sheet-shaped member and the long-shaped member.

INDUSTRIAL APPLICABILITY According to the present invention, the sheet-shaped member can be conveyed in a flat state, wrinkles can be suppressed from occurring on the sheet-shaped member, and wrinkles existing on the sheet-shaped member can be smoothed out.

It is a top view which shows the outline of the transport device of this invention. It is a side view which shows the outline of the transport device in the said aspect. It is a top view which shows the outline in one aspect of the transfer device of this invention. It is a side view which shows the outline of the transfer device in one aspect of this invention. It is a top view which shows the outline in one aspect of the transfer device of this invention. It is a side view which shows the outline of the transfer device in one aspect of this invention. It is a top view which shows the outline in one aspect of the transfer device of this invention. It is a side view which shows the outline of the transfer device in one aspect of this invention.

According to the present invention, it is a transport device for transporting a sheet-shaped member.
A belt-shaped member for mounting a sheet-shaped member and transporting it in the transport direction, and a belt-shaped member having a plurality of holes penetrating in the thickness direction.
It is a suction part arranged on the side opposite to the side on which the sheet-shaped member is placed with respect to the belt-shaped member, and by sucking the surrounding atmosphere, the suction force through the hole of the belt-shaped member is used to form a sheet. It has a suction part that holds the member against the belt-shaped member, and
A transport device is provided in which the attractive forces acting on the sheet-like member when the sheet-like member is transported have different transport regions in at least two regions of the sheet-like member.

Hereinafter, a transport device for transporting a sheet-shaped member according to the present invention will be described with reference to the drawings.

FIG. 1 is a top view showing an outline of the transport device of the present invention. Further, FIG. 2 is a side view showing an outline of the transport device in the above embodiment. In FIGS. 1 and 2, 1 is a transport device, 10 is a belt-shaped member, 11 is a hole penetrating the belt-shaped member 10 in the thickness direction, 20 is a sheet-shaped member, 21 is a region in the sheet-shaped member 20, 22. Is another region in the sheet-shaped member 20, 30 is a suction portion, 41a is a suction force in one region, 41b is a suction force in another region, 50 is a tail roller, and 60 is a transport direction.
The transport device 1 has a transport region 12 in which the suction force acting on the sheet-shaped member when the sheet-shaped member is transported differs in at least two regions of the sheet-shaped member.
Here, the transport region 12 is a region for transporting the sheet-shaped member 20 while sucking the sheet-shaped member 20 by suction force through the hole 11 in the belt-shaped member 10, and corresponds to a region where the belt-shaped member 10 faces the suction portion 30. ..
For example, in the embodiment shown in FIGS. 1 and 2, the transport region 12 is a region on which a suction force (41a, 41b) acts from the suction portion 30 to the sheet-shaped member 20 through the hole 11 of the belt-shaped member 10. Is. In such a transport region 12, the suction force acting on the sheet-shaped member when the sheet-shaped member is transported differs in at least two regions of the sheet-shaped member. The belt-shaped member 10 may have a region in which the suction force does not act on the sheet-shaped member. That is, in the transport device of the present invention, when transporting the sheet-shaped member, a region in which the suction force acts on the sheet-shaped member and a region in which the suction force does not substantially act may coexist.

The belt-shaped member 10 is a member for mounting the sheet-shaped member 20 and transporting the sheet-shaped member 20 in the transport direction. The belt-shaped member 10 travels from the upstream side to the downstream side, and the belt-shaped member 10 travels by a predetermined distance. The sheet-shaped member 20 placed on the 10 can be conveyed. The upstream side is the side on which the sheet-shaped member is placed on the transport device, and the downstream side is the side on which another process such as a bonding process can be continued.
Here, the belt-shaped member 10 has a plurality of holes 11 penetrating in the thickness direction. By having the hole 11 penetrating in the thickness direction, the surrounding atmosphere is sucked to the belt-shaped member 10 through the suction portion 30 arranged on the side opposite to the side on which the sheet-shaped member 20 is placed. Therefore, the sheet-shaped member 20 can be held against the belt-shaped member 10 by the suction force (for example, the suction forces 41a and 41b in FIG. 2) through the hole 11 of the belt-shaped member 10.
Since the sheet-shaped member 20 can be held against the belt-shaped member 10 through the suction force, fluttering that may occur during the transportation of the sheet-shaped member can be reduced or suppressed. In addition, it is possible to suppress the displacement of the sheet during transportation. Thereby, for example, even a thin sheet-shaped member 20 (thickness of about 100 μm) can be stably conveyed, and the production process can be shortened.

The material of the belt-shaped member 10 can be appropriately selected according to the components contained in the sheet-shaped member 20 to be conveyed. For example, it may be made of synthetic rubber, silicon rubber, or metal. Further, the width of the belt-shaped member 10 and the like can be appropriately selected according to the sheet-shaped member to be conveyed. In some embodiments, the belt-shaped member 10 may be a mesh-shaped synthetic rubber belt or a resin belt. As a result, for example, it is possible to prevent the sheet-shaped member from being scratched during transportation of the thin sheet-shaped member 20.

The shape of the hole 11 penetrating in the thickness direction, that is, the shape of the hole existing on the transport surface of the belt-shaped member 10 is not particularly limited, and may be, for example, a circular shape, an elliptical shape, a polygonal shape, or the like, and the belt. It may have a shape extending in a direction perpendicular to the transport direction of the shaped member 10 (for example, a slit shape), or a shape arranged at a predetermined angle with respect to the transport direction of the belt-shaped member 10. May be good. Further, the size of the hole is not particularly limited, and for example, in the case of a quadrangle, one side may be in the range of 0.35 mm to 5.0 mm, and in the case of a circle, the diameter may be in the range of 0.4 mm to 3.0 mm. ..
In one embodiment, the holes 11 penetrating in the thickness direction of the belt-shaped member 10 are evenly arranged along at least a direction perpendicular to the transport direction of the sheet-shaped member 20 (width direction of the sheet-shaped member 20). NS. As a result, the sheet-shaped member 20 is sucked with an even force.
The number of holes 11 penetrating in the thickness direction is not limited, and is appropriately arranged so that the suction force acting on the sheet-shaped member when the sheet-shaped member is conveyed differs in at least two regions of the sheet-shaped member. can. For example, the holes 11 can be arranged so that the entire surface of the sheet-shaped member can be evenly sucked.

According to the transport device of the present invention, the suction portion 30 arranged on the side opposite to the side on which the sheet-shaped member is placed with respect to the belt-shaped member sucks the surrounding atmosphere to form the hole in the belt-shaped member. The sheet-shaped member 20 can be held against the belt-shaped member 10 by the suction force through 11 (for example, the suction forces 41a and 41b in FIG. 2).
According to the transport device of the present invention, when the sheet-shaped member 20 is transported, the suction force acting on the sheet-shaped member differs in at least two regions of the sheet-shaped member.
For example, in FIGS. 1 and 2, the suction force in one region 21 of the sheet-shaped member 20 and another region 22 of the sheet-shaped member 20 are different.
In the present specification, one region in the sheet-shaped member 20 is an arbitrary region in the sheet-shaped member, and any region different from the above-mentioned one region in the same sheet-shaped member or another sheet-shaped member as another region. It is an area.
It should be noted that the difference in suction force in one suction unit can be made by means known in the art.

As described above, the suction force acting on the sheet-shaped member (for example, the suction forces 41a and 41b in FIG. 2) is different in at least two regions of the sheet-shaped member, so that the sheet-shaped member 20 is sucked at once. This can be suppressed, and the occurrence of wrinkles on the sheet-shaped member can be suppressed.
Further, the sheet-shaped member can be conveyed in a flat state, and curling of the sheet-shaped member can be suppressed. Further, even if the sheet-like member is thin (thickness 50 to 300 μm), the sheet can be stretched during transportation and the generation of curl can be suppressed.
For example, in the case of the thin sheet-shaped member 20, wrinkles during transportation can be prevented, and the sheet can be held in a flat state before the alignment adjustment of the sheet. Therefore, by using the transport device of the present invention, the alignment of the sheet-shaped member can be performed with high accuracy. For example, by transporting the sheet-shaped member whose bonding axis has been adjusted in advance by the transport device of the present invention, the alignment of the sheet-shaped member can be performed with higher accuracy.

As long as the suction force acting on the sheet-like member when the sheet-like member is conveyed differs in at least two regions of the sheet-like member, the magnitude of the suction force acting is not limited, for example, the suction force is. , 0.01 to 55 kPa. The suction force can be appropriately set in such a range so that the suction force can be different in at least two regions of the sheet-shaped member.
For example, the suction force in the region 22 of the sheet-like member located on the downstream side in FIGS. 1 and 2 and the suction force in the region 21 of the sheet-like member located on the upstream side are different, and the suction force on the downstream side is 0. The suction force on the upstream side can be set within the range of 0.02 to 55 kPa and within the range of 0.01 to 50 kPa.
As described above, the suction force acting on the sheet-shaped member when the sheet-shaped member is conveyed differs in at least two regions of the sheet-shaped member, thereby suppressing the fluttering of the sheet-shaped member and making the sheet-shaped member. It can be transported in a flat state, wrinkles can be suppressed from occurring on the sheet-shaped member during transportation, and wrinkles that may exist on the sheet-shaped member can be smoothed out.
Further, for example, at the time of bonding with another sheet-shaped member, the alignment accuracy of the bonding axis can be improved, and the tact time can be shortened.

In one embodiment, the difference in the suction force acting on the sheet-shaped member when the sheet-shaped member is conveyed in at least two regions of the sheet-shaped member is the absolute value of the difference in the suction force acting on the sheet-shaped member. Is in the range of 0.01 to 50 kPa, for example, 0.1 to 20 kPa.

For example, in the transport direction, when the suction force acting on the downstream region of the sheet-shaped member is larger than the suction force acting on the upstream region of the sheet-shaped member, the suction force acting on the downstream region The value obtained by subtracting the suction force acting on the upstream region is in the range of 0.01 to 50 kPa, for example, 0.1 to 20 kPa.
By providing a difference in suction force within such a range, it is possible to suppress a sudden change in suction force, the sheet-shaped member can be transported in a flat state, and wrinkles are generated on the sheet-shaped member during transportation. Can be suppressed, and wrinkles that may exist in the sheet-like member can be smoothed out.

Further, for example, the suction force acting on the sheet-shaped member on the downstream side from another region 22 in the sheet-shaped member 20 may be the same as the suction force in the region 22, or may be distributed stepwise. Alternatively, it may be continuously distributed.
In the present specification, the stepwise distribution means that the suction force changes hierarchically from the upstream side to the downstream side. For example, it means that the suction force changes at a predetermined interval or an arbitrary interval, and the suction force in the next region is different from the suction force in the previous region. On the other hand, the continuous distribution means that the change gradient of the suction force is constant from the upstream side to the downstream side.

Examples of the sheet-shaped member that can be conveyed by the present invention include a suction member, a printed wiring board, an optical member, and the like, and can be suitably used for a thin member that is prone to curl, wrinkles, and the like. In some embodiments, the sheet-like member is an optical member, for example, one having a thickness of 50 to 500 μm can be used. The size of the sheet-shaped member is, for example, a width of 30 cm to 150 cm and a length of 30 cm to 150 cm.
The optical member can include, for example, at least one optical film selected from a retardation film, a polarizing film, an antireflection film, a viewing angle improving film, a brightness improving film, and the like. The optical member may have a single-layer structure of these optical films, or may have a multi-layer structure in which a plurality of films including the above-mentioned optical films are laminated.
According to the present invention, a (laminated) member having a structure in which curls, wrinkles, etc. are likely to occur, such as a sheet-like member having a thickness of 120 μm or less and a member having a multi-layer structure, due to a difference in suction force in different regions. On the other hand, stable transportation is possible. For example, even a sheet-like member having a multilayer structure having a polarizing film can obtain such a remarkable effect.

Further, in the transport device of the present invention, as a modification of the sheet-shaped member, for example, a long-shaped member 25 as shown in FIGS. 7 and 8 described later can be transported. In the present invention, a long member can be used in all aspects. With the transfer device of the present invention, wrinkles of the long member can be effectively smoothed, and the long member can be conveyed in a flat state.

In one embodiment, by providing the plurality of suction portions, the suction force acting on the sheet-shaped member when the sheet-shaped member 20 is conveyed can be made different in at least two regions of the sheet-shaped member. For example, FIGS. 3 and 4 are schematic views showing an embodiment of a transport device including a plurality of suction portions.
In FIGS. 3 and 4, 10 is a belt-shaped member, 11 is a hole penetrating in the thickness direction of the belt-shaped member, 20 is a sheet-shaped member, 21 is a region of the sheet-shaped member 20, and 22 is a sheet-shaped member 20. Another region, 23 is the boundary part of the suction force, 31 is the first suction part, 32 is the second suction part, 41 is the suction force in the first suction part, and 42 is the suction force in the second suction part. 50 is a tail roller and 60 is a transport direction.
The transport device 1 has transport regions (12a, 12b) in which the suction force acting on the sheet-shaped member 20 when the sheet-shaped member 20 is transported differs in at least two regions of the sheet-shaped member.
Here, the transport region 12a is a region for transporting the sheet-shaped member 20 while sucking the sheet-shaped member 20 by suction force through the hole 11 in the belt-shaped member 10, and is a region where the belt-shaped member 10 faces the first suction portion 31. Matches.
The transport region 12b is a region for sucking and transporting the sheet-shaped member 20 by suction force through the hole 11 in the belt-shaped member 10, and corresponds to a region where the belt-shaped member 10 faces the second suction portion 32. ..
For example, in the embodiment shown in FIGS. 3 and 4, the transport region (12a, 12b) has a suction force (13, 32) from the suction portion (31, 32) to the sheet-like member 20 through the hole 11 of the belt-shaped member 10. This is the area where 41,42) acts. In such a transport region 12, the suction force acting on the sheet-shaped member when the sheet-shaped member is transported differs in at least two regions of the sheet-shaped member.
Further, the belt-shaped member 10 may have a region in which the suction force does not act on the sheet-shaped member. That is, in the transport device of the present invention, when transporting the sheet-shaped member, a region in which the suction force acts on the sheet-shaped member and a region in which the suction force does not substantially act may coexist.
In the embodiment shown in FIGS. 3 and 4, the first suction unit 31 and the second suction unit 32 may have different suction forces. In another aspect, the suction force acting on the sheet-like member may be different in at least two regions within the transport region 12a corresponding to the first suction portion 31. Further, in the transport region 12b corresponding to the second suction portion 32, the suction force acting on the sheet-shaped member may be different in at least two regions.

In the embodiment having a plurality of suction portions, for example, as shown in FIGS. 3 and 4, the suction force 41 in the first suction portion 31 and the suction force 42 in the second suction portion 32 can be different from each other. In one embodiment, the suction force of the suction portion on the downstream side is larger than the suction force of the suction portion on the upstream side.
According to FIGS. 3 and 4, for example, the suction force 42 in the second suction unit 32 is larger than the suction force 41 in the first suction unit 31.
For example, the suction force on the downstream side can be set in the range of 0.02 to 55 kPa, and the suction force on the upstream side can be set in the range of 0.01 to 50 kPa.

Further, when the suction force acting on the downstream region of the sheet-shaped member is larger than the suction force acting on the upstream region of the sheet-shaped member in the transport direction, the suction force acting on the downstream region is performed. The value obtained by subtracting the suction force acting on the upstream region is in the range of 0.01 to 50 kPa, for example, 0.1 to 20 kPa.
By providing a difference in suction force within such a range, it is possible to suppress a sudden change in suction force, the sheet-shaped member can be transported in a flat state, and wrinkles are generated on the sheet-shaped member during transportation. Can be suppressed, and wrinkles that may exist in the sheet-like member can be smoothed out.

In the embodiment having a plurality of suction portions, the suction force may be changed from the upstream side to the downstream side of the same suction portion.

Further, when a plurality of suction portions are provided, a boundary portion 23 for suction force may be provided between one suction portion and another suction portion. By providing the boundary portion, the sheet-shaped member can be stretched more efficiently, wrinkles can be removed, and the sheet-shaped member can be flattened. The suction force boundary portion 23 can be provided by arranging adjacent suction portions at intervals.

In some embodiments, the suction force acting on the sheet-like member is distributed stepwise in a direction parallel to the transport direction. FIG. 5 is a top view showing an outline of one aspect of the transfer device of the present invention, and FIG. 6 is a side view showing an outline of the transfer device according to the above-mentioned aspect of the present invention. In FIGS. 5 and 6, 10 is a belt-shaped member, 11 is a hole penetrating in the thickness direction of the belt-shaped member, 20 is a sheet-shaped member, 21 is a region of the sheet-shaped member 20, and 22 is a sheet-shaped member 20. Another region, 23 is the boundary part of the suction force, 31 is the first suction part, 32 is the second suction part, 33 is the third suction part, 41 is the suction force in the first suction part, and 42 is the second. 2 is the suction force in the suction section, 43 is the suction force in the third suction section, 50 is the tail roller, 51 is the bonding roll, 52 is the roll, 53 is the delivery roll, 60 is the transport direction, and 70 is the second. The sheet-like member, 80, is a laminated body.
The transport device 1 has transport regions (12a, 12b, 12c) in which the suction force acting on the sheet-shaped member 20 when the sheet-shaped member 20 is transported differs in at least two regions of the sheet-shaped member. The suction force in at least two transport regions of the transport regions (12a, 12b, 12c) may be different, for example, in at least one transport region of the transport regions (12a, 12b, 12c). It may be in a mode in which the suction force is different.
Here, the transport region 12a is a region for transporting the sheet-shaped member 20 while sucking the sheet-shaped member 20 by suction force through the hole 11 in the belt-shaped member 10, and is a region where the belt-shaped member 10 faces the first suction portion 31. Matches.
The transport region 12b is a region for sucking and transporting the sheet-shaped member 20 by suction force through the hole 11 in the belt-shaped member 10, and corresponds to a region where the belt-shaped member 10 faces the second suction portion 32. ..
The transport region 12c is a region for transporting the sheet-shaped member 20 while sucking the sheet-shaped member 20 by suction force through the hole 11 in the belt-shaped member 10, and corresponds to a region where the belt-shaped member 10 faces the third suction portion 33. ..
In such a transport region 12, the suction force acting on the sheet-shaped member when the sheet-shaped member is transported differs in at least two regions of the sheet-shaped member.
Further, the belt-shaped member 10 may have a region in which the suction force does not act on the sheet-shaped member. That is, in the transport device of the present invention, when transporting the sheet-shaped member, a region in which the suction force acts on the sheet-shaped member and a region in which the suction force does not substantially act may coexist.
In the embodiment shown in FIGS. 5 and 6, as will be described later, the first suction unit 31, the second suction unit 32, and the third suction unit 33 have different suction forces. You may. In another aspect, the suction force acting on the sheet-like member may be different in at least two regions within the transport region 12a corresponding to the first suction portion 31. Further, in the transport region 12b corresponding to the second suction portion 32, the suction force acting on the sheet-shaped member may be different in at least two regions. Further, the suction force acting on the sheet-like member may be different in at least two regions within the transport region 12c corresponding to the third suction portion 33.

In an embodiment in which the suction force acting on the sheet-shaped member is distributed stepwise in a direction parallel to the transport direction, for example, as shown in FIGS. 5 and 6, the transport device of the present invention has a first suction. It can have a section 31, a second suction section 32, and a third suction section 33.
In such an embodiment, the suction force acting on the sheet-shaped member when the sheet-shaped member is conveyed differs in at least two regions of the sheet-shaped member. For example, the suction force 41 in the first suction section 31, the suction force 42 in the second suction section 32, and the suction force 43 in the third suction section 33 may exhibit different suction forces. Further, the suction force 41 in the first suction section 31 and the suction force 42 in the second suction section 32 show the same suction force, and the suction force 43 in the third suction section 33 is in the other two suction sections. It may show a suction force different from the suction force.

In one embodiment, the suction force increases in the order of the suction force of the third suction unit 33 on the downstream side, the suction force of the second suction unit 32, and the suction force of the first suction unit 31 on the upstream side. .. By having a suction force in such a relationship, wrinkles can be gradually smoothed from the sheet-shaped member, and more stable transportation can be performed.

For example, in a mode in which the suction force acting on the sheet-shaped member is distributed stepwise in a direction parallel to the transport direction, the suction force of the suction portion arranged at the most downstream is within the range of 0.02 to 55 kPa. The suction force of the suction portion arranged on the most upstream side is in the range of 0.01 to 50 kPa. Further, in some embodiments, in addition to the above relationship, the suction force of the suction portion arranged on the most downstream side is larger than the suction force of the suction portion arranged on the most upstream side.
In an embodiment in which the suction force acting on the sheet-shaped member is distributed stepwise in a direction parallel to the transport direction, at least the suction force acting on the sheet-shaped member when the sheet-shaped member is transported is the sheet. As long as they differ in at least two regions of the shaped member, the suction portion arranged on the most downstream side and the suction portion arranged on the most upstream side depend on the properties, thickness, etc. of the sheet-shaped member used. The suction force in the suction section arranged between them can be adjusted as appropriate.

In one embodiment, the transport device of the present invention is a roll arranged above the side on which the sheet-shaped member is placed with respect to the belt-shaped member, and when the sheet-shaped member is transported, the roll is placed. It further has a roll that is arranged to come into contact with the sheet-like member on the belt-like member while rotating. For example, the roll 52 in FIGS. 5 and 6 corresponds to a roll arranged so as to be in contact with the sheet-shaped member on the belt-shaped member.
By having this roll, wrinkles of the sheet-like member can be removed more effectively. The roll 52 arranged so as to come into contact with the sheet-like member on the belt-shaped member can be arranged at any place. For example, it may be provided on the downstream side of the boundary portion 23 of the suction force. When arranged at such a position, wrinkles of the sheet-like member can be removed more effectively, and the wrinkle smoothing effect is excellent. Further, a plurality of rolls 52 can be arranged, and each roll can be arranged at an arbitrary position.

In some embodiments, when the roll is placed in the transport path of the sheet-like member, the suction force may be adjusted before and after the roll passes. For example, even if the suction force before the sheet-shaped member passes through the roll is increased, the suction force when the sheet-shaped member passes through the roll is weakened, and the suction force after passing through the roll is increased. good. In this way, by increasing the suction force before and after the roll and weakening the suction force while the sheet-like member and the roll are in contact with each other, wrinkles can be effectively smoothed when the roll passes, and the roll passes through. By sucking firmly afterwards, the sheet-shaped member can be flattened more efficiently.

Further, when there is a treatment step such as peeling of the separate film, the suction force may be adjusted before and after passing through the treatment step. Also in this embodiment, by increasing the suction force before and after the treatment step and weakening the suction force between the treatment steps, wrinkles can be effectively smoothed during the treatment step, and firmly after the treatment step. By sucking, the sheet-shaped member can be flattened more efficiently.

In some embodiments, the suction force acting on the sheet-like member is continuously distributed in a direction parallel to the transport direction. FIG. 7 is a top view showing an outline of one aspect of the transfer device of the present invention, and FIG. 8 is a side view showing an outline of the transfer device according to the above-mentioned aspect of the present invention. In FIGS. 7 and 8, 10 is a belt-shaped member, 11 is a hole penetrating in the thickness direction of the belt-shaped member, 25 is a long-shaped member, 21 is a region of the long-shaped member 25, and 22 is a long-shaped member. Another region in the member 25, 24 is yet another region in the elongated member 25, 30 is a suction portion, 44 is an upstream suction force in the suction portion 30, 45 is a suction force in the middle flow portion in the suction portion 30, 46. Is the suction force on the downstream side of the suction unit 30, 50 is the tail roller, 51 is the bonding roll, and 60 is the transport direction.
The transport device 1 has a transport region 12 in which the suction force acting on the long member 25 when the long member 25, which is one aspect of the sheet-shaped member, is different in at least two regions of the sheet-shaped member. Have.
Here, the transport region 12 is a region for transporting the long member 25 while sucking the long member 25 by suction force through the hole 11 in the belt-shaped member 10, and corresponds to a region where the belt-shaped member 10 faces the suction portion 30. do.
In such a transport region 12, the suction force acting on the sheet-shaped member (long member) when the sheet-shaped member (long member) is transported is the suction force of the sheet-shaped member (long member). It differs in at least two areas.
Further, the belt-shaped member 10 may have a region in which the suction force does not act on the sheet-shaped member (long member). That is, in the transport device of the present invention, when the sheet-shaped member is transported, a region in which the suction force acts on the sheet-shaped member (long member) and a region in which the suction force does not substantially act are mixed. You may.

In an embodiment in which the suction force acting on the sheet-shaped member is continuously distributed in a direction parallel to the transport direction, for example, the suction force 44 on the upstream side of the suction unit 30 to the suction force of the middle flow portion of the suction unit 30. The suction force is continuously distributed toward the suction force 46 on the downstream side of the suction unit 45 and the suction unit 30. For example, the suction force is continuously distributed so that the suction force 44 on the upstream side of the suction unit 30 is weak and the suction force 46 on the downstream side is strong.
The suction force acting on the sheet-shaped member is continuously distributed in the direction parallel to the transport direction, so that the wrinkles of the sheet-shaped member can be smoothed out and more stable transport can be performed. When transporting shaped members, it can be transported more efficiently. In addition, by continuously sucking, it is possible to more efficiently convey the sheet-like member that is prone to warp and the sheet-like member that is warped (large curl), and prevent warpage (curl) and bending. It can be restored to a flat state.
Further, when the long member is transported, the long member can be transported more flatly.

In this embodiment, the suction force on the upstream side can be in the range of 0.01 to 50 kPa, and the suction force on the downstream side can be in the range of 0.02 to 55 kPa. Further, in some embodiments, in addition to the above relationship, the suction force in the downstream region is larger than the suction force in the upstream region.

In an embodiment in which the suction force acting on the sheet-shaped member is continuously distributed in a direction parallel to the transport direction, at least the suction force acting on the sheet-shaped member when the sheet-shaped member is transported is the sheet. As long as they differ in at least two regions of the shaped member, the suction force in the downstream region and the suction force in the upstream side can be appropriately adjusted depending on the properties, thickness, and the like of the sheet-shaped member used.

In some embodiments, a transport device is provided in which the attractive forces acting on the sheet-like member differ in at least two regions perpendicular to the transport direction. The difference in suction force in at least two regions perpendicular to the transport direction can prevent curling of the sheet-like member, effectively smooth out wrinkles, and flatten the sheet-like member. Can be transported in a state. For example, a difference may be provided between the suction force of the peripheral portion in the longitudinal direction of the sheet-shaped member and the suction force of the central region along the longitudinal direction of the sheet-shaped member.

<Manufacturing method of laminated body>
According to another aspect of the present invention, there is a method for manufacturing a laminated body having a first sheet-shaped member and a second sheet-shaped member, and the first sheet-shaped member is used by using the transfer device according to the present invention. A method for manufacturing a laminated body is provided, which comprises transporting a member and laminating the first sheet-shaped member and the second sheet-shaped member.
In another aspect, it is a method for manufacturing a laminated body having a sheet-shaped member and a long-shaped member, wherein the sheet-shaped member is conveyed by using the above-mentioned transport device according to the present invention, and the sheet-shaped member. A method for manufacturing a laminated body is provided, which comprises laminating a long member and a long member.

Hereinafter, description will be made with reference to FIGS. 5 and 6 described above. In FIGS. 5 and 6, 20 is a sheet-shaped member, 51 is a laminating roll, 53 is a sending roll, 60 is a transport direction, 70 is a second sheet-shaped member, and 80 is a laminated body. By transporting using the transport device of the present invention, the sheet-like member (first sheet-like member) 20 having wrinkles stretched and the second sheet-like member 70 are bonded by using the bonding roll 51. In combination, the laminated body 80 can be manufactured.
By transporting the first sheet-shaped member using the transport device of the present invention, the wrinkles of the first sheet-shaped member can be smoothed and flattened. Further, the alignment can be performed without being affected by the curl of the first sheet-shaped member, and the first sheet-shaped member and the second sheet-shaped member can be bonded with high accuracy.
In some embodiments, the second sheet-like member may be an elongated member, the first sheet-like member may be an elongated member, and the first and second sheet-like members may be. Both may be long members.
The second sheet-shaped member is not particularly limited, and may be, for example, a separate film, a protective film, or an optical member.

The present invention provides a transport device capable of transporting a sheet-shaped member in a flat state, suppressing the occurrence of wrinkles on the sheet-shaped member, and smoothing out wrinkles existing on the sheet-shaped member. Further, the present invention provides a method for manufacturing a laminated body, which comprises transporting a sheet-shaped member using such a transport device.

1 Conveyor device 10 Belt-shaped member 11 Hole through in the thickness direction of the belt-shaped member 12 Conveyance area 20 Sheet-shaped member 21 One area in the sheet-shaped member (long member) 22 In the sheet-shaped member (long member) Another area 23 Suction force boundary 24 Another area in the long member 25 Long member 30 Suction part 31 First suction part 32 Second suction part 33 Third suction part 41 First suction part Suction force in the part 42 Suction force in the second suction part 43 Suction force in the third suction part 44 Suction force in the upstream side 45 Suction force in the middle stream part 46 Suction force in the downstream side 50 Tail roller 51 Laminating roll 52 Roll 53 Delivery roll 60 Transport direction 70 Second sheet-like member 80 Laminated body

Claims (8)

A transport device for transporting a sheet-shaped optical member having a thickness of 50 to 500 μm.
A belt-shaped member for mounting a sheet-shaped optical member and transporting it in the transport direction, and a belt-shaped member having a plurality of holes penetrating in the thickness direction.
It is a suction part arranged on the side opposite to the side on which the sheet-shaped optical member is placed with respect to the belt-shaped member. By sucking the surrounding atmosphere, the sheet is attracted by the suction force through the hole of the belt-shaped member. It has a suction unit that holds the optical member against the belt-shaped member, and the attractive force acting on the sheet-shaped optical member when the sheet-shaped optical member is conveyed is at least two of the sheet-shaped optical member. Has different transport areas in the area and has different transport areas
In the transport direction, the attractive force acting on the region on the downstream side of the sheet-shaped optical member is larger than the attractive force acting on the region on the upstream side of the sheet-shaped optical member.
A transport device in which the holes of the belt-shaped member are evenly arranged along at least a direction perpendicular to the transport direction of the sheet-shaped optical member. The transport device according to claim 1, wherein the attractive force acting on the sheet-shaped optical member is distributed stepwise in a direction parallel to the transport direction. The transport device according to claim 2, wherein the suction unit includes a plurality of suction units according to the suction force distributed stepwise. The transport device according to claim 1, wherein the suction force acting on the sheet-shaped optical member is continuously distributed in a direction parallel to the transport direction. The transport device according to any one of claims 1 to 4, wherein the attractive force acting on the sheet-shaped optical member differs in at least two regions perpendicular to the transport direction. A roll arranged above the side on which the sheet-shaped optical member is placed with respect to the belt-shaped member, and the sheet on the belt-shaped member is rotated while the roll is conveyed when the sheet-shaped optical member is conveyed. The transport device according to any one of claims 1 to 5, further comprising a roll arranged so as to be in contact with the optical member. A method for manufacturing a laminate having a first sheet-shaped optical member and a second sheet-shaped optical member.
The first sheet-shaped optical member is transported by using the transport device according to any one of claims 1 to 6, and the first sheet-shaped optical member and the second sheet-shaped optical member are attached. A method of manufacturing a laminate, including mating. A method for manufacturing a laminate having a sheet-shaped optical member and a long-shaped member.
A laminated body comprising transporting a sheet-shaped optical member using the transport device according to any one of claims 1 to 6 and laminating the sheet-shaped optical member and the elongated member. Production method.

Images