KR20170127451A - Method of manufacturing rubbed strip substrate and rubbing apparatus - Google Patents

Abstract

 A method of producing a rubbed strip-like substrate, comprising a rubbing step of rubbing the strip-shaped substrate in contact with the rubbing roll, wherein the rubbing roll is in contact with the strip-shaped substrate at a surrounding angle exceeding 0 DEG, Like substrate is rotated, and the conveying direction of the strip-shaped substrate and the rotation axis of the rubbing roll are non-orthogonal. For example, the direction in which the strip-shaped substrate is brought in is the same throughout the width direction of the strip-shaped substrate at a position where the contact between the strip-shaped substrate and the rubbing roll carried in the rubbing roll is started, Like substrate in the widthwise direction of the strip-shaped substrate at the position where the contact between the strip-shaped substrate and the rubbing roll carried out from the strip-shaped substrate is terminated. Also, a device for it.

Description

Method of manufacturing rubbed strip substrate and rubbing apparatus

TECHNICAL FIELD The present invention relates to a rubbed strip-shaped substrate manufacturing method and a rubbing apparatus.

In the production of a film such as an optical film, a step of rubbing a strip-shaped film is sometimes carried out. For example, in the case of forming a layer of a liquid crystalline substance oriented on a film as a base material, rubbing of the surface of the base material is performed in order to give alignment restraining force to the surface of the base material. Such impartation of the alignment restraining force by the rubbing can be easily performed as compared with the application of the alignment regulating force by other methods, and there is an advantage that the degree of freedom of the material, shape, and manufacturing conditions of the substrate is high.

Such rubbing is generally carried out using a rubbing roll. A typical rubbing roll has a circumferential shape. The rubbing can be achieved by rotating the rubbing roll about its axis and bringing the principal surface (columnar surface) into contact with the strip-shaped substrate which is continuously transported.

It is sometimes required to have an alignment regulating force in the oblique direction with respect to the longitudinal direction of the strip-shaped substrate. In the case of producing such a strip-shaped substrate, a method called oblique rubbing may be employed (for example, Patent Document 1). In the oblique rubbing, the strip-shaped base material and the rubbing roll are brought into contact with each other in the conveying direction of the strip-shaped substrate to be conveyed, with the rotation axis of the rubbing roll forming a non-orthogonal angle.

Patent Document 1: JP-A-08-160431

When the strip substrate is brought into contact with the rubbing roll with the rotation axis of the rubbing roll in the oblique direction with respect to the longitudinal direction of the strip-shaped substrate to be transported, the degree of rubbing may be uneven in the surface of the strip substrate .

Accordingly, it is an object of the present invention to provide a method for producing a rubbed strip-shaped substrate capable of achieving inclined rubbing with a uniform degree of rubbing, and a rubbing apparatus for rubbing the strip-shaped substrate.

Particularly, in the case of carrying out oblique rubbing, when the conveying path is adjusted so as to increase the enveloping angle with respect to the rubbing roll and make the contact pressure uniform, the conveying direction of the strip- Shaped substrate to be conveyed to the apparatus is skewed to a greater extent than the conveying direction of the strip-shaped substrate to be conveyed to the apparatus. It is difficult for the rubbing device having such a meandering direction to be easily arranged in a small space in a general purpose manufacturing line. A device called EPC (registered trademark, Edge Position Controllers) is known as a means for correcting such meandering. However, when the envelope angle is large, the amount of meandering is large and therefore the amount of correction is also large. As a result, the EPC becomes large and complicated. If correction can not be made, wrinkles will occur on the strip-shaped substrate or scratches will occur.

Therefore, an object of the present invention is to provide a method of producing a rubbed strip-shaped substrate which can attain oblique rubbing with a uniform degree of rubbing, To provide a rubbing device.

Means for Solving the Problems As a result of a study by the present inventors in order to solve the above problems,

[A] The present inventors have found that when the rubbing roll is brought into contact with the strip-shaped substrate at an inclination angle exceeding 0 °, the length of the conveying path of the strip-shaped substrate may become uneven over the widthwise direction of the strip- The contact pressure of the strip-shaped base material with respect to the rubbing roll becomes uneven due to the unevenness of the conveyance path, and the degree of rubbing becomes uneven. It has further been found that such unevenness can be reduced by making the conveying path of the strip-shaped substrate and the arrangement of the rubbing rolls to be specific, and as a result, the inclined rubbing with a uniform degree of rubbing can be achieved.

[B] The present inventors paid attention to the residual amount of the strip-shaped substrate in the transport path. By setting the relationship between the remaining amount and the condition of the film to be transported and the condition of conveyance within a specific range, it is possible to make the range of the contact pressure of the strip-shaped base material to the rubbing roll within a permissible range, It can be made uniform.

[C] The present inventors have found that when the rubbing roll is brought into contact with the strip-shaped substrate at an inclination angle exceeding 0 °, the length of the conveying path of the strip-shaped substrate may become uneven over the widthwise direction of the strip- It has been found out that unevenness of the conveying path disturbs the contact pressure of the strip-shaped base material with respect to the rubbing roll, and further, the degree of rubbing becomes uneven. By making the conveying path of the strip-shaped substrate and the arrangement of the rubbing rolls a specific mode, it is possible to reduce the inclination of the meandering in the carrying-out direction while reducing such unevenness. As a result, I have found out more things that can be accomplished efficiently.

[D] When the cylindrical rubbing roll is brought into contact with the strip-shaped substrate at an inclination angle exceeding 0 °, the inventors have found that the length of the conveying path of the strip-shaped substrate may become uneven across the widthwise direction of the strip- The contact pressure of the strip-shaped base material with respect to the rubbing roll becomes uneven, and the degree of rubbing becomes uneven.

As a result of further investigation to solve such unevenness, it has been found that a roll having a non-cylindrical main surface such as a crown roll or a reverse crown roll can be used for carrying, rubbing, Of the strip-shaped base material on the conveying path to a specific shape, it is possible to reduce such unevenness, and as a result, it has been found that the inclined rubbing with a uniform degree of rubbing can be achieved.

The present invention has been completed based on this finding.

That is, the present invention is as follows.

[A1] A method for producing a rubbed strip-

And a rubbing step of rubbing the strip-shaped base material brought in from the upstream of the conveying path into contact with a rubbing roll rotating around the rotation axis and carrying it out to the downstream of the conveying path,

In the rubbing step,

The rubbing roll is brought into contact with the strip-shaped substrate at a surrounding angle exceeding 0 DEG, thereby rotating the strip-shaped substrate in the conveying direction,

The transport direction of the strip-shaped substrate and the rotation axis of the rubbing roll form non-orthogonal angles,

Like substrate in a widthwise direction of the strip-shaped substrate at a position where the contact between the strip-shaped base material and the rubbing roll is started with the rubbing roll,

Like base material in a widthwise direction of the strip-shaped base material at a position where the contact between the belt-like base material and the rubbing roll carried out from the rubbing roll is terminated.

[A2] A production process according to [A1]

Further comprising a step of rotating the conveying direction by a conveying device that rotates the conveying direction of the strip-shaped substrate at an angle exceeding 0 degrees on the upstream side, the downstream side, or both of the rubbing process. Way.

[A3] A production process according to [A2]

Wherein at least one of the conveying devices is a conveying roll and the direction of rotation axis of rotation in the conveying direction is orthogonal to the conveying direction of the belt-like substrate.

[A4] A production method according to any one of [A1] to [A3]

Wherein the rubbing roll is provided so that the rotation axis of the rubbing roll is horizontal,

Like base material at a position where the contact between the strip-shaped base material and the rubbing roll is started, or the strip-shaped base material at the position where the contact between the strip- And the outgoing direction of the substrate is horizontal.

[A5] A production process according to any one of [A1] to [A4]

Wherein an angle formed between the conveying direction of the strip-shaped substrate and the rotation axis of the rubbing roll is 35 degrees or more and 55 degrees or less.

[A6] A rubbing device for rubbing a strip-

And a rubbing roll which rotates about a rotation axis, rubs in contact with the strip-shaped base material conveyed from upstream of the conveyance path, and conveys to the downstream of the conveyance path,

In the rubbing roll,

Like substrate with an enveloping angle exceeding 0 DEG, thereby rotating the conveying direction of the strip-shaped substrate,

Like substrate is made to have a non-orthogonal angle with the rotation axis of the rubbing roll,

Like substrate in a widthwise direction of the strip-shaped substrate at a position where the contact between the strip-shaped substrate and the rubbing roll is started to be carried in the rubbing roll,

Like base material is arranged such that the strip-shaped base material is taken out in the same direction in the width direction of the strip-shaped base material at a position where the contact between the band-shaped base material and the rubbing roll carried out from the rubbing roll is terminated.

[A7] As the rubbing apparatus according to [A6]

Further comprising a conveying device for rotating the conveying direction of the strip-shaped base material at an angle exceeding 0 degrees on the upstream side, the downstream side, or both of the rubbing rolls.

[A8] As the rubbing device according to [A7]

Wherein at least one of the conveying devices is a conveying roll, and the direction of the rotation axis of the conveying roll is orthogonal to the conveying direction of the belt-shaped substrate.

[A9] As the rubbing apparatus according to any one of [A6] to [A8]

Wherein the rubbing roll is provided so that the rotation axis of the rubbing roll is horizontal,

Like base material at a position where the contact between the strip-shaped base material and the rubbing roll is started, or the strip-shaped base material at the position where the contact between the strip- Wherein the direction of removal of the substrate is horizontal.

[A10] A rubbing apparatus according to any one of [A6] to [A9]

Wherein an angle formed between the conveying direction of the strip-shaped substrate and a rotation axis of the rubbing roll is not less than 35 degrees and not more than 55 degrees.

[B1] A method for producing a rubbed strip-

And a rubbing step of rubbing the strip-shaped substrate conveyed along the conveying path in contact with a rubbing roll rotating around the rotating shaft while applying a tensile force T (N) in the conveying direction,

The rubbing roll is brought into contact with the strip-shaped substrate at a surrounding angle exceeding 0 DEG, thereby rotating the strip-shaped substrate in the conveying direction,

The transport direction of the strip-shaped substrate and the rotation axis of the rubbing roll form non-orthogonal angles,

Wherein said band base material has a Young's modulus E (Pa), a thickness d (m) and a width w (m) in the transport direction,

Wherein the maximum value? Max (%) of the residual amount in the conveyance path and the average value? Evg (%) of the residual amount satisfy the formula (1).

(? max-? avg) Edw < 30T Expression (1)

[B2] A production process according to [B1]

Wherein a product (Ed) of the Young's modulus (E) and the thickness (d) in the conveying direction of the strip-shaped substrate is 400,000 Pa · m or less.

[B3] A production process according to [B1] or [B2]

Wherein the Young's modulus (E) in the conveying direction of the strip-shaped substrate is 3,000 MPa or less.

[B4] A production method according to any one of [B1] to [B3]

Wherein a maximum value (? Max) of the remaining amount and an average value (? Avg) of the remaining amount satisfy the formula (2).

? max-eavg < 0.02% Equation (2)

[B5] A production process according to any one of [B1] to [B4]

Wherein an angle formed between the conveying direction of the strip-shaped substrate and the rotation axis of the rubbing roll is 35 DEG or more and 55 DEG or less.

[B6] A rubbing device for rubbing a strip-

A pre-roll for conveying the strip-shaped substrate along a conveying path while applying a tension T (N) in the conveying direction, and

And a rubbing roll which rotates around a rotation axis and rubs the strip substrate in contact with the strip substrate,

The rubbing roll is brought into contact with the strip-shaped substrate at a surrounding angle exceeding 0 DEG, thereby rotating the strip-shaped substrate in the conveying direction,

The rubbing roll is disposed so that the conveying direction of the strip-shaped base material and the rotation axis of the rubbing roll form non-orthogonal angles,

The pre-roll and the rubbing roll may be formed by a roll-

(E (Pa)), the thickness (d (m)) and the width (w (m)) in the conveying direction of the belt-

Wherein a maximum value (? Max (%) of the residual amount in the conveying path and an average value (? Avg (%)) of the remaining amount are arranged so as to satisfy the formula (1).

(? max-? avg) Edw < 30T Expression (1)

[B7] As the rubbing apparatus according to [B6]

Wherein a product (Ed) of the Young's modulus (E) and the thickness (d) in the conveying direction of the strip-shaped substrate is 400,000 Pa · m or less.

[B8] As the rubbing device according to [B6] or [B7]

Wherein the Young's modulus (E) in the conveying direction of the strip-shaped substrate is 3,000 MPa or less.

[B9] A rubbing device according to any one of items [B6] to [B8]

Wherein a maximum value (? Max) of the remaining amount and an average value (? Avg) of the remaining amount satisfy the formula (2).

? max-eavg < 0.02% Equation (2)

[B10] The rubbing device according to any one of [B6] to [B9]

Wherein an angle formed between the conveying direction of the strip-shaped substrate and the rotation axis of the rubbing roll is 35 ° or more and 55 ° or less.

[C1] A method of producing a rubbed strip-

A rubbing step of rubbing the strip-like base material brought in from the upstream of the conveying path into contact with a rubbing roll rotating around the rotation axis and taking it out to the downstream of the conveying path,

Like substrate is rotated by a conveying device that rotates the conveying direction of the belt-shaped substrate at an angle exceeding 0 degrees on the upstream side, the downstream side, or both of the rubbing process Including,

In the rubbing step,

The rubbing roll is brought into contact with the strip-shaped substrate at a surrounding angle exceeding 0 DEG, thereby rotating the strip-shaped substrate in the conveying direction,

The transport direction of the strip-shaped substrate and the rotation axis of the rubbing roll form non-orthogonal angles,

Like substrate in a widthwise direction of the strip-shaped substrate at a position where the contact between the strip-shaped base material and the rubbing roll is started with the rubbing roll,

Like base material in the widthwise direction of the strip-shaped base material at the position where the contact between the belt-like base material and the rubbing roll carried out from the rubbing roll is terminated,

Wherein the direction of the rotation axis of the belt-like substrate in the conveying direction by the conveying device is parallel to the rotation axis of the rubbing roll.

[C2] The production method according to [C1]

Wherein the sum of the rotational angle of rotation of the strip-shaped base material in the carrying direction by the rubbing roll and the rotational angle of rotation in the carrying direction by the carrying apparatus is substantially 0 °.

[C3] A production method according to [C1] or [C2]

Wherein the conveying direction of the strip-shaped substrate and the rotational axis direction of rotation in the conveying direction by the conveying device form non-orthogonal angles.

[C4] A production process according to [C3]

Wherein the step of rotating the conveying direction by the conveying device includes forming an air layer between the conveying device and the belt-like substrate.

[C5] A production process according to [C4]

Wherein the air layer is formed by air pressure.

[C6] A production method according to any one of [C1] to [C5]

Wherein an angle formed between the conveying direction of the strip-shaped substrate and the rotation axis of the rubbing roll is 35 degrees or more and 55 degrees or less.

[C7] A rubbing apparatus for rubbing a strip-

A rubbing roll which rotates about a rotating shaft, rubs in contact with the band-shaped substrate conveyed from the upstream of the conveying path and is carried out downstream of the conveying path,

And a transporting device for rotating the conveying direction of the strip-shaped substrate at an angle exceeding 0 ° on the upstream side, the downstream side, or both of the rubbing rolls,

In the rubbing roll,

Like substrate with an enveloping angle exceeding 0 DEG, thereby rotating the conveying direction of the strip-shaped substrate,

Like substrate is made to have a non-orthogonal angle with the rotation axis of the rubbing roll,

Like substrate in a widthwise direction of the strip-shaped substrate at a position where the contact between the strip-shaped substrate and the rubbing roll is started to be carried in the rubbing roll,

Like base material is arranged such that the strip-shaped base material is taken out in the same direction in the width direction of the strip-shaped base material at a position where the contact between the belt-like base material and the rubbing roll carried out from the rubbing roll is terminated,

Wherein the conveying device is disposed such that the direction of the rotation axis of the conveying device in the conveying direction of the belt-shaped substrate is parallel to the rotation axis of the rubbing roll.

[C8] As the rubbing apparatus described in [C7]

Wherein the sum of the rotation angle of rotation of the strip-shaped base material in the conveyance direction by the rubbing roll and the rotation angle of rotation in the conveyance direction by the conveyance device is approximately 0 °.

[C9] As the rubbing apparatus according to [C7] or [C8]

Wherein the conveying direction of the strip-shaped substrate and the rotating axis direction of rotation in the conveying direction by the conveying device form non-orthogonal angles.

[C10] The rubbing apparatus according to [C9]

Wherein the conveying device is an apparatus for forming an air layer between the conveying device and the strip substrate.

[C11] The rubbing apparatus according to [C10]

Wherein the conveying device forms the air layer by air pressure.

[C12] The rubbing apparatus according to any one of items [C7] to [C11]

Wherein an angle formed between the conveying direction of the strip-shaped substrate and a rotation axis of the rubbing roll is not less than 35 degrees and not more than 55 degrees.

[D1] A method of producing a rubbed strip-

And a rubbing step of rubbing the surface of the strip-like base material having the front surface and the rear surface brought in from the upstream of the conveying path into contact with a rubbing roll rotating around the rotation axis and carrying the rubbing to the downstream side of the conveying path,

In the rubbing step,

The rubbing roll is brought into contact with the strip-shaped substrate at a surrounding angle exceeding 0 DEG, thereby rotating the strip-shaped substrate in the conveying direction,

The transport direction of the strip-shaped substrate and the rotation axis of the rubbing roll form non-orthogonal angles,

Wherein the shape of the strip-like base material on the transport path satisfies the following conditions (i) to (iii):

(i) at a position where the strip-shaped base material contacts the rubbing roll, the strip-shaped base material has a convex shape on the back side,

(ii) at least a part of the region between the rubbing roll and the upstream-side grip roll for gripping the strip-shaped substrate on the upstream side thereof,

(iii) at least a part of the region between the rubbing roll and the downstream-side grip roll for gripping the strip-shaped substrate on the downstream side thereof,

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[D2] A production process according to [D1]

Wherein the shape of the strip-like base material on the transport path satisfies the above (i)

Wherein the rubbing roll has a convex shape with respect to the strip substrate.

[D3] A production process according to [D1] or [D2]

Wherein the shape of the strip-like base material on the transport path satisfies the above (ii)

Wherein the upstream-side grip roll has a convex shape with respect to the strip-shaped base material,

And the upstream side grip roll is in contact with the strip substrate from the back side of the strip substrate.

[D4] A production method according to [D1] or [D2]

Wherein the shape of the strip-like base material on the transport path satisfies the above (ii)

Wherein the upstream-side grip roll has a concave shape with respect to the strip-

And the upstream-side grip roll is in contact with the belt-like base material from the surface side of the belt-like base material.

[D5] A production method according to any one of [D1] to [D4]

Wherein the shape of the strip-like base material on the transport path satisfies the above (iii)

Wherein the downstream-side grip roll has a convex shape with respect to the strip-

And the downstream side grip roll is in contact with the strip substrate from the back side of the strip substrate.

[D6] A production method according to any one of [D1] to [D4]

Wherein the shape of the strip-like base material on the transport path satisfies the above (iii)

The downstream-side grip roll has a concave shape with respect to the strip-shaped base material,

And the downstream side grip roll is in contact with the strip substrate from the surface side of the strip substrate.

[D7] A production process according to any one of [D1] to [D6]

Wherein an angle formed between the conveying direction of the strip-shaped substrate and the rotation axis of the rubbing roll is 35 degrees or more and 55 degrees or less.

[D8] A rubbing device for rubbing a strip-

And a rubbing roll which rubs against the surface of the belt-like base material having the front and back surfaces carried in from the upstream of the conveying path and rotates about the rotational axis and is carried out downstream of the conveying path,

In the rubbing roll,

Like substrate with an enveloping angle exceeding 0 DEG, thereby rotating the conveying direction of the strip-shaped substrate,

Like substrate is arranged so as to form a non-orthogonal angle between the conveying direction of the strip-shaped substrate and the rotation axis of the rubbing roll,

In the rubbing device,

Wherein the shape of the strip-like base material on the transport path satisfies the following conditions (i) to (iii):

(i) at a position where the strip-shaped base material contacts the rubbing roll, the strip-shaped base material has a convex shape on the back side,

(ii) at least a part of the region between the rubbing roll and the upstream-side grip roll for gripping the strip-shaped substrate on the upstream side thereof,

(iii) a region having a convex shape on the surface side in at least a part of the region between the rubbing roll and the downstream side grip roll for gripping the strip-shaped base material on the downstream side of the rubbing roll

Shaped substrate so as to satisfy at least one of the shape of the strip-like base material.

[D9] As the rubbing apparatus according to [D8]

Wherein the shape of the strip-like base material on the transport path satisfies the above (i)

And the rubbing roll has a convex shape with respect to the strip-shaped base material.

[D10] As the rubbing device according to [D8] or [D9]

Wherein the shape of the strip-like base material on the transport path satisfies the above (ii)

Wherein the upstream-side grip roll has a convex shape with respect to the strip-shaped base material,

And said upstream side grip roll is in contact with said strip-like base material from said back side of said strip-like base material.

[D11] The rubbing device according to [D8] or [D9]

Wherein the shape of the strip-like base material on the transport path satisfies the above (ii)

Wherein the upstream-side grip roll has a concave shape with respect to the strip-

And the upstream-side grip roll is in contact with the strip-like base material from the surface side of the strip-like base material.

[D12] A rubbing device according to any one of items [D8] to [D11]

Wherein the shape of the strip-like base material on the transport path satisfies the above (iii)

Wherein the downstream-side grip roll has a convex shape with respect to the strip-

And the downstream side grip roll is in contact with the strip substrate from the back side of the strip substrate.

[D13] A rubbing device according to any one of items [D8] to [D11]

Wherein the shape of the strip-like base material on the transport path satisfies the above (iii)

The downstream-side grip roll has a concave shape with respect to the strip-shaped base material,

And the downstream-side grip roll is in contact with the strip-shaped base material from the surface side of the strip-shaped base material.

[D14] The rubbing apparatus according to any one of [D8] to [D13]

Wherein an angle formed between the conveying direction of the strip-shaped substrate and a rotation axis of the rubbing roll is not less than 35 degrees and not more than 55 degrees.

In the following description, among the embodiments of the present invention, those related to the inventions [A1] to [A10] are those related to the "embodiment A" and the inventions [B1] to [B10] ] To [C12] may be referred to as "embodiment C", and those related to inventions [D1] to [D14] may be referred to as "embodiment D."

According to the manufacturing method and the rubbing apparatus of the present invention, it is possible to achieve inclined rubbing with a uniform degree of rubbing.

Particularly, according to the manufacturing method and the rubbing apparatus of the present invention in any of the features, it is possible to achieve the inclined rubbing in which the degree of rubbing is uniform and the inclination of the meander in the carrying out direction is small.

1 is a side view schematically showing an example of an operation of the rubbing device of Embodiment A and the manufacturing method of Embodiment A using the rubbing device.
Fig. 2 is a top view schematically showing an example of the operation of the rubbing device of Embodiment A and the manufacturing method of Embodiment A using the rubbing device.
3 is a rear view schematically showing an example of an operation of the rubbing device of Embodiment A and the manufacturing method of Embodiment A using the rubbing device.
4 is a side view schematically showing the relationship between the rubbing roll A 130 and the strip substrate in the rubbing apparatus A 100 shown in Figs. 1 to 3.
5 is a side view schematically showing the relationship between the rubbing roll A 130 and the strip substrate in the rubbing apparatus A 100 shown in Figs. 1 to 3.
6 is a side view schematically showing another example of the operation of the rubbing device of Embodiment A and the manufacturing method of Embodiment A using the rubbing device.
7 is a top view schematically showing another example of the operation of the rubbing device of Embodiment A and the manufacturing method of Embodiment A using the rubbing device.
8 is a side view schematically showing another example of operation of the rubbing device of Embodiment A and the manufacturing method of Embodiment A using the rubbing device.
9 is a top view schematically showing another example of the operation of the rubbing device of Embodiment A and the manufacturing method of Embodiment A using the rubbing device.
Fig. 10 is a perspective view schematically showing a floating transport apparatus A820 in the rubbing apparatus A800 shown in Figs. 8 and 9. Fig.
Fig. 11 is a side view schematically showing the flotation conveying device A820 in the rubbing device A800 shown in Figs. 8 and 9. Fig.
Fig. 12 is a bottom view schematically showing the flotation transportation device A820 in the rubbing device A800 shown in Figs. 8 and 9. Fig.
13 is a side view schematically showing an example of operation of a rubbing apparatus of the prior art and a conventional manufacturing method using the same.
14 is a top view schematically showing an example of operation of a rubbing apparatus of the prior art and a conventional manufacturing method using the same.
Fig. 15 is a side view schematically showing the relationship between the rubbing roll A1330 and the strip substrate in the rubbing apparatus A1300 shown in Figs. 13 to 14. Fig.
16 is a side view schematically showing another example of the operation of the rubbing apparatus of the prior art and the conventional manufacturing method using the same.
17 is a top view schematically showing another example of the operation of the rubbing apparatus of the prior art and the conventional manufacturing method using the rubbing apparatus.
18 is an enlarged bottom view of the pre-roll A 110 shown in Figs. 1 to 3.
19 is a side view schematically showing an example of operation of the rubbing device of Embodiment B and the manufacturing method of Embodiment B using the rubbing device.
20 is a top view schematically showing an example of the operation of the rubbing device of Embodiment B and the manufacturing method of Embodiment B using the rubbing device.
21 is an enlarged bottom view of the pre roll B110 shown in Figs. 19 and 20. Fig.
22 is a side view schematically showing another example of the operation of the rubbing device of Embodiment B and the manufacturing method of Embodiment B using the rubbing device.
23 is a top view schematically showing another example of the operation of the rubbing device of Embodiment B and the manufacturing method of Embodiment B using the rubbing device.
24 is a rear view schematically showing another example of the operation of the rubbing device of Embodiment B and the manufacturing method of Embodiment B using the rubbing device.
25 is a side view schematically showing an example of an operation of the rubbing device of Embodiment C and the manufacturing method of Embodiment C using the rubbing device.
26 is a top view schematically showing an example of an operation of the rubbing device of Embodiment C and the manufacturing method of Embodiment C using the rubbing device.
Fig. 27 is a side view schematically showing the relationship between the flotation conveying apparatus C120, the rubbing roll C130, the flotation conveying apparatus C140 and the belt-shaped substrate in the rubbing apparatus C100 shown in Figs. 25 to 26. Fig.
28 is a side view schematically showing the relationship between the rubbing roll C 130 in the rubbing apparatus C 100 shown in Figs. 25 to 26 and the strip-shaped base material C 14 carried out therefrom.
Fig. 29 is a perspective view schematically showing a floating carrier C120 in the rubbing apparatus C100 shown in Figs. 25 to 26. Fig.
30 is a side view schematically showing the flotation conveying apparatus C120 in the rubbing apparatus C100 shown in Figs. 25 to 26. Fig.
Fig. 31 is a bottom view schematically showing the flotation conveying apparatus C120 in the rubbing apparatus C100 shown in Figs. 25 to 26. Fig.
32 is a side view schematically showing another example of the operation of the rubbing device of Embodiment C and the manufacturing method of Embodiment C using the rubbing device.
33 is a top view schematically showing another example of the operation of the rubbing device of Embodiment C and the manufacturing method of Embodiment C using the rubbing device.
34 is a side view schematically showing the relationship between the rubbing roll C130, the floating carrier C840 and the strip substrate in the rubbing apparatus C800 shown in Figs. 32 and 33. Fig.
35 is a side view schematically showing another example of the operation of the rubbing device of Embodiment C and the manufacturing method of Embodiment C using the rubbing device.
36 is a top view schematically showing another example of the operation of the rubbing device of Embodiment C and the manufacturing method of Embodiment C using the rubbing device.
37 is an enlarged bottom view of the pre-roll C 110 shown in Figs. 1 and 2. Fig.
38 is a side view schematically showing an example of an operation of the rubbing device of Embodiment D and the manufacturing method of Embodiment D using the rubbing device.
39 is a top view schematically showing an example of the operation of the rubbing device of Embodiment D and the manufacturing method of Embodiment D using the rubbing device.
40 is a side view schematically showing another example of operation of the rubbing device of Embodiment D and the manufacturing method of Embodiment D using the rubbing device.
41 is a top view schematically showing another example of the operation of the rubbing device of Embodiment D and the manufacturing method of Embodiment D using the rubbing device.
Fig. 42 is a cross-sectional view for explaining the shape of a crown roll, taking the pre-roll D110 shown in Figs. 38 to 39 as an example.
Fig. 43 is a cross-sectional view for explaining the shape of an inverse crown roll, taking the pre-roll D310 shown in Figs. 40 to 41 as an example.
44 is a side view schematically showing an example of operation of a rubbing apparatus of the prior art and a conventional manufacturing method using the rubbing apparatus.
45 is a top view schematically showing an example of operation of a rubbing apparatus of the prior art and a conventional manufacturing method using the rubbing apparatus.
Fig. 46 is an enlarged perspective view of the pre roll D110 shown in Figs. 38 and 39. Fig.

Hereinafter, the present invention will be described in detail with reference to embodiments and examples. However, the present invention is not limited to the embodiments and examples shown below, and can be arbitrarily changed without departing from the scope of the claims and the equivalents of the present invention. For example, the present invention may include combinations of features relating to two or more of Embodiments A to D. [

In the following description, to "rotate" the "transport direction" means to define a transport path in which the transport direction is changed, in which the transport direction changes as the strip substrate is transported downstream. For example, when the main path of the cylindrical surface of the roll, such as a rubbing roll and a pre-roll, and the transport surface on the curved surface of the lifting and transporting apparatus, are defined in a state in which the transport path changes direction, the transport direction rotates. In the present application, a device for supporting a strip-shaped substrate on a conveying path such as a roll or a floating conveying device is sometimes referred to simply as a &quot; supporting device &quot;.

In the following description, it is assumed that a certain supporting device is &quot; immediately &quot; upstream of the rubbing roll. This means that the supporting device is provided upstream of the rubbing roll, Is not present. Likewise, the fact that a certain supporting device is located at the downstream of the rubbing roll means that the supporting device is located downstream of the rubbing roll and no supporting device for rotating the conveying direction exists between the supporting device and the rubbing roll It says.

In the following description, the term &quot; band shape &quot; refers to a substrate having a length of 5 times or more the width, preferably 10 times or more, and more specifically, Of the total length of the substrate. The upper limit of the ratio of the length to the width of the film is not particularly limited, but may be, for example, 100,000 times or less.

In the drawings of the present application, coordinates are represented by coordinate axes X, Y and Z which are common coordinate axes. The coordinate axes X, Y, and Z are orthogonal coordinate axes, and the XY plane (the plane parallel to both of the coordinate axes X and Y) is a horizontal plane (i.e., a plane perpendicular to the gravitational direction).

Hereinafter, the embodiments A to D will be sequentially described.

A1. Embodiment A (i)]

First, the present invention relating to Embodiment A will be described.

The manufacturing method of Embodiment A is a manufacturing method of a rubbed strip-shaped substrate, and includes a specific rubbing step of rubbing the strip-shaped substrate. In the rubbing process, the strip-shaped base material carried from the upstream of the transport path rubs against the rubbing roll rotating around the rotation axis, and is transported downstream of the transport path.

Figs. 1 to 3 are a side view, a top view, and a rear view schematically showing an example of an operation of the rubbing device of Embodiment A and the manufacturing method of Embodiment A using the rubbing device. The embodiment shown here will be described with reference to embodiment A (i). In Fig. 1, the rubbing apparatus A100 is observed in the direction of the coordinate axis Y. In Fig. 2, the rubbing apparatus A100 is observed in the direction of the coordinate axis Z. In Fig. 3, the rubbing apparatus A100 is observed in the coordinate axis X direction .

The rubbing apparatus A100 includes a rubbing roll A 130, a pre-roll A 110 immediately upstream of the rubbing roll A 130, and a pre-roll A 150 immediately downstream of the rubbing roll A 130. In the operation of the rubbing apparatus A100, the strip-like base materials A11 to A16 are transported in the direction of the arrow AR1.

The strip-like base material A11 carried into the rubbing apparatus A100 is guided to advance along the cylindrical surface of the upstream-side pre-roll A10. By such an induction, the conveying direction of the strip-shaped substrate rotates at an angle exceeding 0 degrees. The pre-roll A110 is a conveying roll provided in a state in which it can freely rotate around the axis A11X by a support (not shown) supporting the shaft. Therefore, the pre-roll A 110 rotates in the direction of the arrow AR 3 with the conveyed belt-like base material.

In this example, the rotation axis of the rotation in the transport direction by the pre-roll A 110 coincides with the rotation axis A 11 X of the pre-roll A 110 itself, and the band between the start of contact with the pre- And is perpendicular to the conveying direction of the shape base material. In this example, the axis A11X of the pre-roll A 110 is also parallel to the coordinate axis Y. [

The angle formed by the pre-roll A 110 and the conveying direction may have an error within +/- 0.5 degrees from the angle of orthogonality within a range not obstructing the conveyance. When the rotational axis of the rotation in the carrying direction is perpendicular to the carrying direction of the belt-like base material in contact with within the range of the tolerance, the pre-roll A 110 can carry the belt-like base material in a gripped state.

In the present invention including Embodiments A to D, the transporting device for transporting the strip-shaped substrate "grips" and transports the strip-shaped substrate means that the transporting device has a movable main surface, Like substrate is conveyed, and at the time of such conveyance, the belt-shaped substrate is conveyed in the sun without accompanying slippage with the main surface of the conveying device. Therefore, the pre-roll A10 in Embodiment A (i) is a device that feeds the strip-shaped substrate in a grip state, while a conveying device such as a rubbing roll or a floating transfer device conveys the strip- It is not a device. In the present application, a roll capable of carrying such a strip-shaped substrate in a grip state is sometimes referred to as a &quot; grip roll &quot;.

The strip-like base material A13 conveyed downstream of the upstream-side pre-roll A110 is guided to continue along the cylindrical surface of the rubbing roll A 130. In this example, the carrying-in direction of the strip-like base material A13 is a horizontal direction, that is, a direction parallel to the XY plane. The axis A13X of the rubbing roll A 130 is parallel to the XY plane and inclined at an angle of 45 degrees with respect to the coordinate axis Y. [ The material of the rubbing roll used in the manufacturing method of Embodiment A and the rubbing device of Embodiment A is not particularly limited and may be a roll provided with a material suitable for rubbing such as nonwoven fabric on the cylindrical surface.

Unlike the pre-roll A 110, the rubbing roll A 130 is driven by a driving device (not shown) to rotate in the direction of the arrow AR 2 about the axis A 13 X, One surface of the strip-shaped substrate is rubbed, and a rubbing process is performed.

In the manufacturing method of Embodiment A, the rubbing roll is brought into contact with the strip-shaped substrate at a surrounding angle exceeding 0 °, thereby rotating the conveying direction of the strip-shaped substrate. In addition, the angle formed by the conveying direction of the strip-shaped substrate and the rotation axis of the rubbing roll is non-orthogonal. The conveying direction of the strip-shaped substrate referred to herein is the conveying direction of the strip-shaped substrate surrounding the rubbing roll. In the embodiment of the embodiment A (i), the direction in which the strip-shaped base material surrounding the rubbing roll A 130 is conveyed and the angle formed by the axis A 13X of the rubbing roll A 130 are non-orthogonal. Thus, by making contact at a surrounding angle exceeding 0 DEG, it becomes possible to bring the strip-shaped base material into contact with the rubbing roll at a high pressure. In addition, by forming such a non-orthogonal angle, oblique rubbing by the rubbing roll is achieved.

The encircling angle is preferably 5 DEG or more, more preferably 10 DEG or more, and preferably 120 DEG or less, and more preferably 90 DEG or less. By setting the encircling angle within this range, it becomes possible to impart a high alignment regulating force to the film without giving an excessive load. The angle formed by the conveying direction of the strip-shaped substrate and the rotation axis of the rubbing roll is called &quot; oscillation angle &quot;. The vibration angle is an angle range of more than 0 DEG and less than 89.5 DEG, preferably 10 DEG or more, more preferably 35 DEG or more, particularly preferably 40 DEG or more, and more preferably 80 DEG or less, 55 DEG or less, particularly preferably 50 DEG or less. In the oblique rubbing, it is often required to perform rubbing so as to have the alignment regulating force at 45 degrees with respect to the longitudinal direction of the strip-shaped base material. By setting the vibration angle to the above range, Can be easily achieved.

In the production method of Embodiment A, the rotation speed of the rubbing roll can be arbitrarily adjusted so as to obtain a desired rubbing amount. The amount of rubbing can be represented by the moving distance relative to the strip-like base material of the cylindrical surface of the rubbing roll, from the start of the contact between the strip-shaped substrate and the rubbing roll to the end of the contact in the conveying path. Specifically, the rotation speed of the rubbing roll can be adjusted so that the product of the peripheral speed of the cylindrical surface of the rubbing roll and the time when the rubbing roll is in contact with the strip-shaped substrate is in a desired range. More specifically, the peripheral speed of the cylindrical surface of the rubbing roll is determined from the rubbing roll diameter d (mm) and the rotation speed t (rpm) by? Dt / 60 (mm / sec), and the rubbing roll is in contact with the strip- the time line speed v (mm / minute), surrounding so obtained in each Aθw (°) and the oscillation angle φ from (°) (πdAθw / 360) ÷ (vsinφ / 60) ( second), and their product of (π ² d ^{2 A?} Wt) / (360 v sin φ) (mm). The preferred range of the product is 500 mm to 100000 mm. Therefore, the rotation speed of the rubbing roll can be adjusted so that the product is within the desired range.

The rubbed strip-like base material A14 conveyed downstream of the rubbing roll A 130 is subsequently guided to proceed along the cylindrical surface of the downstream-side pre-roll A 150. By such an induction, the conveying direction of the strip-shaped substrate rotates at an angle exceeding 0 degrees. The pre-roll A 150 is a transport roll provided in a state in which it can freely rotate around the axis A 15 X by a support (not shown) supporting the shaft. Therefore, the pre-roll A 150 rotates in the direction of the arrow AR 3 with the conveyed belt-like base material.

In this example, the pre-roll A 150 is a grip roll similar to the pre-roll A 110, and the rotational axis of the rotation in the carrying direction by the pre-roll A 150 coincides with the rotational axis A 15X of the pre- And is orthogonal to the conveying direction of the strip-shaped substrate between the start of contact with the pre-roll A 150 and the end of contact. In this example, while the axis A11X of the pre-roll A 110 is parallel to the coordinate axis Y, the axis A 15X of the pre-roll A 150 is inclined greatly with respect to the coordinate axis Y. Therefore, the axis A11X of the pre-roll A 110 and the axis A 15X of the pre-roll A 150 are largely deviated from the parallel state.

The strip-like base material A16 conveyed downstream of the downstream-side pre-roll A 150 is a rubbed strip-like base material, and may optionally be provided in a storage or use process. For example, the strip-like base material A16 can be conveyed as it is to a line for carrying out the coating process of the liquid crystal composition as it is, or can be stored as a state of a winding roll with a suitable winding device.

By providing a suitable device such as a nip roll, a winding device, etc. on the upstream side, the downstream side, or both of the rubbing device A100, the belt-shaped substrate can be conveyed at an appropriate line speed and tension. The line speed and tension can be arbitrarily set to appropriate values in accordance with the strip-shaped substrate to be used and the rubbing conditions desired. For example, the line speed can be preferably 1 to 50 m / min. The tensile strength can be preferably 30 to 500 N / m.

A1. 1. Relationship between the rubbing roll and the belt-shaped substrate]

In the rubbing step of the manufacturing method of Embodiment A, the carrying direction of the strip-shaped substrate is the same throughout the width direction of the strip-shaped substrate at the position where the contact between the strip-shaped substrate carried in the rubbing roll and the rubbing roll is started, The direction in which the strip-shaped substrate is taken out from the position where the contact between the strip-shaped substrate carried out from the rubbing roll and the rubbing roll ends is the same across the width direction of the strip-shaped substrate. Further, in the rubbing apparatus of Embodiment A, the rubbing roll and other supporting apparatus are arranged so as to be in such a positional relationship.

These features will be described with reference to Figs. 4 to 5. Fig. 4 to 5 are side views schematically showing the relationship between the rubbing roll A 130 and the strip substrate in the rubbing apparatus A 100 shown in Figs. 1 to 3. In Fig. 4, the rubbing roll A 130 is observed in the direction of the axis A 13 X. In Fig. 5, the rubbing roll A 130 is observed in the Y coordinate axis direction. Fig. 4 shows both the strip-shaped base material A13 carried by the rubbing roll A 130 and the strip-shaped base material A14 carried by the rubbing roll A 130. In Fig. 5, (A14).

In the example of Fig. 4, the strip-shaped base material A13 carried into the rubbing roll A 130 advances in the carrying-in direction indicated by the arrow AR13 and starts to make contact with the rubbing roll A 130 at the position A131 do. Therefore, the carrying-in direction of the strip-shaped substrate at the position where the contact between the strip-shaped substrate carried in the rubbing roll and the rubbing roll starts is the direction indicated by the arrow AR13.

After that, the strip-shaped base material surrounds the rubbing roll A 130 with the envelope angle A? W and finishes the contact with the rubbing roll A 130 at the position A 132. Then, the strip-like base material A14 carried out from the rubbing roll A30 proceeds in the carrying out direction indicated by the arrow AR14. Therefore, the direction in which the strip-shaped substrate is taken out from the position at which the contact between the strip-shaped substrate carried out from the rubbing roll and the rubbing roll is terminated is the direction indicated by the arrow AR14.

In addition, the carry-out direction indicated by the arrow AR14 is the same throughout the width direction of the strip-like base material A14. 5, the direction in which the strip-shaped base material A14 is carried out from the rubbing roll A 130 at the position A132 is indicated by the arrows AR14-1 to AR14-5 in the width direction, And they are in the same direction. In this example, the carrying direction indicated by the arrow AR13 is also the same throughout the width direction of the strip-like base material A13.

The &quot; same &quot; in the carrying direction or the carrying out direction as referred to herein may include a tolerance within a range that does not adversely affect the effect of the present invention. For example, when the angle formed by the direction of the reference is 0.5 deg. (Refer to Fig. 5) with reference to the carry-in or carry-out direction at the center in the belt- Direction is referred to as &quot; same &quot; one direction.

In the examples shown in Figs. 1 to 5, the relationship between the axis A11X of the pre-roll A10X and the axis A15X of the pre-roll A 150 is arranged in a relationship deviating from the parallel state shown in Figs. 1 to 3 , The carrying direction of the rubbing roll and the carrying-out direction from the rubbing roll are the same throughout the width direction of the strip-shaped base. As described above, if the relationship between the upstream and downstream rollers of the rubbing roll is arranged in a non-parallel state, it is difficult to easily place the rubbing device in a small space in a general production line. However, by performing such an arrangement, the length of the conveying path of the strip-shaped substrate is made to be longer than the length of the strip-shaped substrate in the width direction of the strip-shaped substrate by making the feeding direction of the rubbing roll and the unloading direction from the rubbing roll the same across the width direction of the strip- So that rubbing in a uniform state can be achieved. Thereby, it becomes possible to bring the strip-shaped base material into contact with the rubbing roll at a uniform pressure without applying a twist, and furthermore, it is possible to achieve the oblique rubbing in which the degree of rubbing is uniform.

In the example shown in Figs. 1 to 5, the rubbing roll A 130 is provided so that the rotational axis A 13 X is in the horizontal direction, and before the position where the rubbing roll A 130 comes into contact with the loaded strip- (The direction indicated by arrow AR13) of the strip-like base material A13 in the horizontal direction is horizontal. As described above, by adjusting the axial direction of the downstream pre-roll A 150 after bringing the conveying direction into the horizontal state, the conveying direction can be adjusted while maintaining the same state throughout the width direction, and further, The positioning of the pre-roll and the rubbing roll in which both of the roll-out direction and the roll-out direction are the same across the width direction can be easily performed. More specifically, the positioning of the pre-roll and the rubbing roll is normally arranged to adjust the angle with respect to the horizontal base, so that the pre-roll A 110 and the rubbing roll A 130 are horizontally arranged, It is relatively easy to determine the position in which the conveying direction of the conveyor belt 22 is horizontally adjusted. Therefore, precise positioning can be easily performed by performing positioning in such a manner that only the axial direction of the pre-roll A 150 is adjusted after such positioning is performed.

Alternatively, by moving the strip-shaped base material A14 at the position where the contact between the belt-shaped base material to be carried out and the rubbing roll is finished horizontally, and by adjusting the axial direction of the pre-roll A10, A decision can be made. However, since the complicated adjustment of the axis of the pre-roll at the upstream may affect the transport path in the downstream, it is easier to adjust the carry-in direction of the loaded strip-like base material A13 to be horizontal.

The characteristics of the relationship between the rubbing roll of Embodiment A and the strip-shaped substrate will be further described in comparison with the prior art. 13 to 14 are a side view and a top view schematically showing an example of the operation of the rubbing apparatus of the prior art and the conventional manufacturing method using the same. 13 to 14, the rubbing apparatus A 1300 includes a rubbing roll A 1330, a pre-roll A 1310 (grip roll) immediately upstream thereof, and a pre-roll A 1350 (grip roll) . In the operation of the rubbing apparatus A1300, the strip-like base materials A11 to A16 are transported in the direction of the arrow AR1. The axis A131X of the pre-roll A 1310 and the axis A 135X of the pre-roll A 1350 are arranged in parallel.

In the examples shown in Figs. 13 to 14, twisting occurs in the conveying path of the strip-like base material near the rubbing roll A 1330, and as a result, at the position where the contact between the rubbing roll and the strip- The direction in which the strip-like base material is fed is not the same across the width direction of the strip-shaped base material, and the direction in which the band-like base material is taken out from the belt- As shown in Fig. 15, the position A1332 at which the strip-like base material finishes contact with the rubbing roll A 1330 is not the same as the position A 1330 of the rubbing roll A 1330 A133X), and the direction in which the strip-shaped base material A14 is carried out in a twisted state from there is the same in the width direction of the strip-shaped base material as indicated by arrows AR14-6 to AR14-10 .

In the examples shown in Figs. 13 to 14 due to such twisting, the length of the conveying path of the strip-shaped substrate becomes uneven across the width direction of the strip-shaped substrate. Specifically, after the contact with the pre-roll A 1310 shown in Fig. 14 is completed, the conveying paths AP130-1 to AP130-5 of the strip-shaped substrate from the start of contact with the pre- The length becomes uneven. More specifically, the conveying paths AP130-1 and AP130-5 at the ends become the longest, the conveying path AP130-3 at the center becomes the shortest, and the conveying paths AP130-2 and AP130-4, Is shorter than the conveying path of the end portion, and is longer than the conveying path of the center portion. When such unevenness occurs in the length of the conveying path, the tension at the center portion becomes weaker than the tension at the end portion when the conveyed band-like substrate contacts the rubbing roll A 1330. Shaped substrate having a small degree of elongation or shrinkage, the strip-shaped base material in the central portion remains in a state of being unevenly loosened at the central portion. As a result, the contact pressure of the strip-shaped base material with respect to the rubbing roll becomes uneven, and the degree of rubbing becomes uneven. On the other hand, in the manufacturing method of Embodiment A, it is possible to contact the strip-shaped substrate with a uniform pressure with a rubbing roll without applying a twist, and further, oblique rubbing with uniform rubbing degree can be achieved.

In the examples of Figs. 13 to 14, when the interval between the pre-roll A 1310 and the pre-roll A 1350 is sufficiently long, the lengths of the transport paths are relatively uneven. However, in this case, there is a problem that the path through which the strip-shaped substrate is transported becomes long in a state in which it is not supported, a problem arises due to flapping of the film, or a space for installing a manufacturing facility becomes large. In Embodiment A, the length of the conveying path from the grip roll on the upstream side closest to the rubbing roll to the grip roll on the downstream side closest to the rubbing roll is preferably 5 times or less the film width, Or less. The lower limit of the length of the transport path is not particularly limited, but may be 0.3 times or more of the film width, for example.

A1. 2. Remaining amount]

If the carrying direction or the carrying out direction in Embodiment A is the same within the tolerance range across the width direction, the remaining amount of the conveying path of the strip-shaped substrate becomes a small value.

In Embodiment A, the remaining amount is obtained by defining the pass line of the strip-shaped substrate conveyed over the rubbing roll as follows, measuring or calculating the length of the pass line at various positions in the width direction of the strip- And is obtained from measurement results or calculation results of these lengths. The method for obtaining the specific residual amount is as follows.

The grip roll on the upstream side closest to the rubbing roll is set as the view roll. Further, the grip roll on the downstream side closest to the rubbing roll is used as an end roll.

Subsequently, on the main surface of the view roll, a line on the main surface of the roll, which is the start point of the pass line, is set. The line at the start of this pass line is set based on the position where the strip-shaped substrate to be conveyed falls from the view roll. The timing at which the strip-like base material falls off the viewpoint roll may be simultaneous throughout the width direction of the strip-like base material or may not be simultaneous throughout the widthwise direction of the strip-like base material due to the twisting of the conveyance path. Therefore, a line at a point where the strip-shaped base material at the earliest point on the main surface of the viewpoint roll falls off the viewpoint roll and a plane including the axis of the viewpoint roll intersects the main surface of the viewpoint roll is defined as a line at the start point of the pass line. When the viewpoint roll is a cylindrical roll, the line at the starting point of the pass line is a line on the main surface of the roll, parallel to the axis of the roll, passing through the point at which the strip- . For example, as shown in Fig. 18, when the position where the strip-like base material A13 falls off the pre-roll A110 as the view roll is a position indicated by a line AL11 inclined with respect to the axis A11X, The point where the strip-shaped base material A13 is the earliest to fall off the pre-roll Al10 among the positions indicated by AL11 is the point indicated by the point AQ10-1. Therefore, a line at a position where the plane including this point AQ10-1 and the axis A11X intersects with the main surface of the pre-roll A10 is a straight line indicated by a line AL13, and this straight line AL13 is a line It is stipulated as a line of time.

Subsequently, on the main surface of the end roll, a line on the main surface of the roll, which is the end point of the pass line, is set. The line of the end point of the pass line is set on the basis of the position where the strip-like substrate to be conveyed is in contact with the end point roll. The timing at which the strip-like base material contacts the end point rolls may be simultaneous throughout the widthwise direction of the strip-like base material or may not be simultaneous throughout the widthwise direction of the strip-shaped base material due to twisting of the conveyance path. Accordingly, the line at the point where the strip-shaped base material contacts the end roll at the latest on the main surface of the end roll and the plane including the axis of the end roll and the main surface of the end roll intersect is defined as the line at the end point of the pass line. When the end roll is a cylindrical roll, the line of the end point of the pass line is a straight line on the main surface of the roll, parallel to the axis of the roll, and the line passing through the point where the strip- .

Subsequently, pass lines are defined at various positions in the width direction of the strip-shaped substrate. The point of view of the pass line is specified at two points at both ends of a straight line at the start point of the specified pass line and at five points or more at equal intervals on the inner side of both ends. Therefore, the number (n) of pass lines becomes 7 or more. For example, in the example shown in Fig. 18, the points AQ10-1 and AQ10-7 on the straight line AL13 at the start point of the pass line and the points AQ10-2 to AQ10-6 on the inner side thereof, The time point of the pass line is defined. The end point of the pass line is defined by two points at both ends of the straight line at the end point of the specified pass line and at the same number of points at the same time Of the Act. A line connecting the start point and the end point of a corresponding pass line on the conveyance path is defined as a pass line. The upper limit of the number (n) of pass lines is not particularly limited, and may be a large number indefinitely, but may be 100 or less for convenience of operation. Or the number of pass lines may be a number in which the interval of the pass lines in the film width direction is 10 mm to 500 mm.

Subsequently, the lengths of the respective pass lines are measured. The measurement of the pass line can be carried out by measuring the length of the yarn by placing the yarn across the end point at the start point of the pass line in the state of taking out the strip-shaped base material. In this case, the thread strikes along the position where the strip-shaped substrate is transported so as not to be loosened. For example, the thread strikes the rubbing roll even at a position where the strip-shaped base is lifted from the rubbing roll by wrinkles or the like. Alternatively, instead of actual measurement, such a pass line may be obtained by calculation based on the positional information of the roll.

The remaining amount epsilon k (k = 1, 2, ... n) and the maximum value epsilon max of the remaining pass through the obtained lengths P1, P2, (3) and (4) from the short pass line length (Pmin) and the longest pass line length (Pmax).

? (%) = (Pk-Pmin) / Pmin x 100 (%) (3)

? max (%) = (Pmax-Pmin) / Pmin x 100 (%) (4)

In Embodiment A, the maximum value? Max of this residual amount is preferably 0% to 0.1%, more preferably 0% to 0.05%.

The width of the strip-shaped substrate is preferably 0.2 m or more, more preferably 0.4 m or more, and preferably 4 m or less, and more preferably 3 m or less. In Embodiment A, good rubbing can be performed over the entire width direction even with such a band-shaped substrate.

A2. Embodiment A (ii)]

In the embodiment A (i), the feeding direction of the strip-shaped base material A13 carried to the rubbing roll A 130 is the horizontal direction, but the present invention is not limited thereto, and the feeding direction of the strip- The strip-shaped substrate carried out from the rubbing roll may be moved in an arbitrary direction, and all of them may be in a direction other than horizontal. Such an example is described below as embodiment A (ii).

6 and 7 are a side view and a top view schematically showing another example of the operation of the rubbing device of Embodiment A and the manufacturing method of Embodiment A using the rubbing device. The embodiment shown here will be described as embodiment A (ii). The rubbing apparatus A600 shown in Figs. 6 and 7 rotates the rubbing apparatus A100 shown in Figs. 1 to 5 around the axis A13X of the rubbing roll A 130, The position is changed to be the pre-rolls A610 and A650, which is different from the rubbing device A100 in other respects. The axes A61X and A65X of the pre rolls A610 and A650 are not parallel to the horizontal plane and therefore neither the carrying direction of the strip-like base material A13 nor the carrying-out direction of the strip- In the case of this rubbing apparatus A600, positioning of the pre-roll and the rubbing roll in which both the carrying direction and the carrying-out direction are the same across the width direction becomes more complicated. However, the strip- And the direction of the strip-like base material A16 carried out of the rubbing apparatus A600 can be set to be different from the rubbing apparatus A100, so that it is useful when such a direction of the sun is desired.

[A3. Embodiment A (iii)]

In the embodiment A (i), the grip rolls just upstream and immediately downstream of the rubbing roll A 130 are grip rolls, but the present invention is not limited to this, and the grip rolls may be provided on the upstream side, immediately downstream side, So that a supporting device other than the grip roll may be provided. Such an example will be described below as Embodiment A (iii).

Figs. 8 and 9 are a side view and a top view schematically showing another example of the operation of the rubbing device of Embodiment A and the manufacturing method of Embodiment A using the same. The embodiment shown here will be described as Embodiment A (iii). The rubbing apparatus A800 shown in Figs. 8 and 9 includes a rubbing roll A 130, a pre-roll A 810 on the upstream side thereof, and a pre-roll A 850 on the downstream side. The rubbing apparatus A800 further includes a flotation transport apparatus A820 between the rubbing roll A 130 and the pre-roll A 810 and a flotation transport apparatus A 840 between the rubbing roll A 130 and the pre-roll A 850 .

In the operation of the rubbing apparatus A800, the strip-like base materials A11 to A16 are transported in the direction of the arrow AR1. The strip-shaped base material A11 carried into the rubbing apparatus A800 is guided to proceed along the cylindrical surface of the upstream-side pre-roll A810. By such an induction, the conveying direction of the strip-shaped substrate rotates at an angle exceeding 0 degrees. The pre-roll A810 is a grip roll provided so as to freely rotate around the axis A81X. Therefore, the pre-roll A810 is rotated in the direction of the arrow AR3 with the conveyed belt-like base material. The axis A81X of the pre-roll A810 is parallel to the coordinate axis Y. [

The strip-like base material A12 conveyed downstream of the upstream-side pre-roll A810 is guided to continue along the conveying surface of the float conveying device A820, and the conveying direction thereof is rotated.

The floating carrier A820 will be described more specifically with reference to Figs. 10 to 12. Fig. Figs. 10 to 12 are a perspective view, a side view and a bottom view schematically showing the flotation conveying apparatus A820 in the rubbing apparatus A800 shown in Figs. 8 and 9. Fig. As shown in Figs. 10 to 12, the flotation conveying apparatus A820 includes a carry section A821 having a carry surface A821S and an air intake section A822 (not shown in Figs. 8 and 9) The air introducing portion A822 is provided with a device (not shown) for introducing the air pressurized into the conveying portion A821 into a pressure adjustable mode. The conveying portion A821 includes a semi-cylindrical A plurality of holes are formed in the conveying surface A821S of the carry section A821 and a plurality of holes are formed in the conveying section A821S so as to discharge the air introduced from the air introducing section A822, Communicate.

In the use of the flotation conveying apparatus A820, the strip substrate is pulled in the direction of the arrow AR4 and guided on the conveying surface A821S in a tense state. Because of this tension, the strip substrate is urged in the direction of the arrow AR5. On the other hand, by ejecting air from the hole of the conveying surface A821S, the belt-shaped substrate is biased toward the direction of the arrow AR6. By suitably adjusting the jetting pressure of the air, it is possible to balance the agglomeration caused by the tension of the strip-shaped substrate and the agglomeration caused by the air ejection. As a result, It is possible to form the air layer by the air pressure of the air to be conveyed and convey the belt-like base material along the conveying surface A821S in a non-contact state with the conveying surface A821S. As a result of such floating and conveying, it is possible to carry the substrate with the rotation in the carrying direction in which the axis A82X is in the direction of the rotation axis. In addition, since the strip substrate does not contact the transport surface A821S, it is also possible to transport the strip substrate in the direction parallel to the axis A82X (the direction indicated by the arrow AR7 in Fig. 12). AR4 direction and AR7 direction. As a result, it becomes possible to convey the strip-shaped substrate in the conveying direction of the inclination indicated by the arrow AR1 in Fig. 12, which is inclined with respect to the axis A82X. When the roll used as the grip roll is transported in the oblique direction, friction occurs between the surface of the roll and the surface of the belt-shaped substrate. However, in the case of using the flotation conveying device, It becomes possible to achieve without involving friction.

The strip-like base material A13 conveyed downstream of the floating conveyance apparatus A820 is then guided to proceed along the cylindrical surface of the rubbing roll A30. In this example, the axis A13X of the rubbing roll A 130 is parallel to the XY plane and inclined at an angle of 45 DEG with respect to the coordinate axis Y. The rubbing roll A 130 is driven by a driving device (not shown) to rotate about the axis A 13 X in the direction of the arrow AR 2 so that the cylindrical surface of the rubbing roll A 130 rotates on one side of the strip- Rubbing, and a rubbing process is performed. The rubbing roll A 130 is brought into contact with the strip-shaped substrate at a surrounding angle exceeding 0 °, thereby rotating the strip-shaped substrate in the conveying direction. In addition, the angle formed by the conveying direction of the strip-shaped substrate and the rotation axis of the rubbing roll is non-orthogonal, and as a result, the same oblique rubbing by the rubbing roll as in Embodiment A (i) is achieved.

Here, the oblique direction can be any arbitrary direction other than the precise orthogonal direction, but specifically, for example, it can be an angle of orthogonality and an angle of more than +/- 5 degrees.

The rubbed strip-like base material A14 conveyed downstream of the rubbing roll A 130 is continuously guided to advance along the conveying surface of the float conveying device A 840, and the conveying direction thereof is rotated. The floating transfer device A840 is the same device as the floating transfer device A820.

The rubbed strip-like base material A15 conveyed downstream of the floating conveying apparatus A840 is then guided to proceed along the cylindrical surface of the downstream-side pre-roll A850. By such an induction, the conveying direction of the strip-shaped substrate rotates at an angle exceeding 0 degrees. The pre-roll A850 is a grip roll installed in a state in which it can freely rotate around the axis A85X. Therefore, the pre-roll A850 is rotated in the direction of the arrow AR3 with the conveyed belt-like base material. The axis A85X of the pre-roll A850 is parallel to the coordinate axis Y. [

In this example, the axes of the upstream-side pre-roll A810 and the downstream-side pre-roll A850 are all arranged in parallel to each other in the horizontal direction. Also in this arrangement, the float conveying apparatuses A820 and A840 are further provided, and the position and direction of the shafts A82X and A84X are adjusted so that the belt-like shape to be brought into the rubbing roll, as in the case of the embodiment A (i) Like substrate in the widthwise direction of the strip-shaped substrate at the position where the contact between the substrate and the rubbing roll is started, and the contact between the strip-shaped substrate carried out from the rubbing roll and the rubbing roll is terminated Direction of the strip-shaped substrate in the width direction of the strip-shaped substrate can be made the same. As a result, it is possible to achieve inclined rubbing with a uniform degree of rubbing.

B1. Embodiment B (i)]

Next, the present invention relating to Embodiment B will be described.

The manufacturing method of Embodiment B is a manufacturing method of a rubbed strip-shaped substrate, and includes a specific rubbing step of rubbing the strip-shaped substrate. In the rubbing step, the strip-shaped substrate to be conveyed is rubbed against the rubbing roll rotating around the rotation axis while applying tension in the conveying direction.

19 to 20 are a side view and a top view schematically showing an example of the operation of the rubbing device of Embodiment B and the manufacturing method of Embodiment B using the rubbing device. The present invention will be described with reference to the form shown in embodiment B (i). In Fig. 19, the rubbing apparatus B100 is observed from the coordinate axis Y direction, and in Fig. 20, the rubbing apparatus B100 is observed from the coordinate axis Z direction.

The rubbing apparatus B100 includes a rubbing roll B130, a pre-roll B110 on the upstream side thereof, and a pre-roll B150 on the downstream side. In the operation of the rubbing apparatus B100, the strip-like base materials B11 to B16 are transported in the direction of the arrow BR1.

The strip-like base material B11 fed into the rubbing apparatus B100 is guided to advance along the cylindrical surface of the upstream-side pre-roll B110. By such an induction, the conveying direction of the strip-shaped substrate rotates at an angle exceeding 0 degrees. The pre-roll B110 is a conveying roll provided so as to be freely rotatable about a shaft B11X by a support (not shown) supporting the shaft. Therefore, the pre-roll B110 rotates in the direction of the arrow BR3 with the conveyed belt-like base material.

The rotation axis of the rotation in the transport direction by the pre-roll B110 coincides with the rotation axis B11X of the pre-roll B110 itself, and the conveyance of the strip- Direction. In this example, the axis B11X of the pre-roll B110 is also parallel to the coordinate axis Y. [

The angle formed by the pre-roll B110 and the conveying direction may have an error within +/- 0.5 degrees from an orthogonal angle within a range not obstructing the conveyance. When the rotational axis of the rotation in the carrying direction is perpendicular to the carrying direction of the belt-like base material in contact with within the range of the tolerance, the pre-roll B110 can carry the belt-like base material in a gripped state.

The strip-like base material B13 conveyed downstream of the upstream-side pre-roll B110 is then guided to proceed along the cylindrical surface of the rubbing roll B130. The axis B13X of the rubbing roll B130 is parallel to the XY plane and inclined at an angle of 45 DEG with respect to the coordinate axis Y. [ The material of the rubbing roll used in the manufacturing method of Embodiment B and the rubbing apparatus of Embodiment B is not particularly limited and may be a roll provided with a material suitable for rubbing, such as nonwoven fabric, on the cylindrical surface.

Unlike the pre-roll B110, the rubbing roll B130 is driven to rotate in the direction of arrow BR2 about the axis B13X by a driving device (not shown) One surface of the strip-shaped substrate is rubbed, and a rubbing process is performed.

In the production method of Embodiment B, the rubbing roll is brought into contact with the strip-shaped substrate at a surrounding angle exceeding 0 DEG, thereby rotating the strip-shaped substrate in the transport direction. In addition, the angle formed by the conveying direction of the strip-shaped substrate and the rotation axis of the rubbing roll is non-orthogonal. The conveying direction of the strip-shaped substrate referred to herein is the conveying direction of the strip-shaped substrate surrounding the rubbing roll. In the example of embodiment B (i), the direction in which the strip-shaped base material surrounding the rubbing roll B 130 is conveyed and the angle formed by the axis B 13 X of the rubbing roll B 130 are non-orthogonal. By making contact with the envelope angle exceeding 0 DEG, it is possible to contact the strip-shaped substrate with the rubbing roll at a high pressure. In addition, by forming such a non-orthogonal angle, oblique rubbing by the rubbing roll is achieved.

The encircling angle is a central angle of the fan shape with respect to the main surface portion in contact with the strip-shaped base material in the rubbing roll. This center angle is an angle when observed in the axial direction of the rubbing roll.

The encircling angle is preferably 5 DEG or more, more preferably 10 DEG or more, and preferably 120 DEG or less, and more preferably 90 DEG or less. By setting the encircling angle within this range, it becomes possible to impart a high alignment regulating force to the film without giving an excessive load.

Particularly, in the manufacturing method of Embodiment B, by setting the encircling angle within a preferable range, the degree of rubbing can be made uniform and the impartation of a high alignment restraining force can be realized. In general, as a method of imparting a high alignment restraining force, it is also conceivable to use a backup roll that presses the strip-shaped base material from the backside of the rubbing surface with a rubbing roll, in addition to increasing the encircling angle. In the method using the backup roll, the strip-shaped base material is sandwiched between the backup roll and the rubbing roll so that the strip-shaped base material contacts the rubbing roll at a high pressure. At this time, since the back-up roll and the strip-shaped base material are gripped and strong frictional force is generated, the strip-shaped base material is subjected to a force to be extruded in the direction in which the backup roll is rotated. As a result, the position of the film is shifted in the direction in which the film is extruded. On the other hand, in the method of pressing the strip-shaped substrate against the rubbing roll by the tension applied to the strip-shaped substrate, only the rubbing roll which does not grip generates the force for pushing the strip- The position difference problem becomes smaller. Therefore, in a preferred embodiment of the manufacturing method of Embodiment B, the rubbing is performed in a state in which the strip-shaped substrate is not subjected to the force pressing the strip-shaped substrate from the inside of the rubbing surface with the rubbing roll.

The angle formed by the conveying direction of the strip-shaped substrate and the rotation axis of the rubbing roll is called &quot; oscillation angle &quot;. The vibration angle is an angle range of more than 0 DEG and less than 89.5 DEG, preferably 10 DEG or more, more preferably 35 DEG or more, particularly preferably 40 DEG or more, and more preferably 80 DEG or less, 55 DEG or less, particularly preferably 50 DEG or less. In the oblique rubbing, it is often required to perform rubbing so as to have the alignment regulating force at 45 degrees with respect to the longitudinal direction of the strip-shaped base material. By setting the vibration angle to the above range, Can be easily achieved.

In the production method of Embodiment B, the rotation speed of the rubbing roll may be arbitrarily adjusted so as to obtain a desired rubbing amount. The amount of rubbing can be represented by the moving distance relative to the strip-like base material of the cylindrical surface of the rubbing roll, from the start of the contact between the strip-shaped substrate and the rubbing roll to the end of the contact in the conveying path. Specifically, the rotation speed of the rubbing roll can be adjusted so that the product of the peripheral speed of the cylindrical surface of the rubbing roll and the time when the rubbing roll comes in contact with the strip-shaped base material is in a desired range. More specifically, the peripheral velocity of the cylindrical surface of the rubbing roll is determined from the rubbing roll diameter d (mm) and the rotation speed t (rpm) by? Dt / 60 (mm / sec), and the rubbing roll is in contact with the strip- the time line speed v (mm / minute), surrounding so obtained in each θw (°) and the oscillation angle φ from (°) (πdθw / 360) ÷ (vsinφ / 60) ( second), and their product of (π ² d ^2? Wt) / (360? Sin?) (Mm). The preferred range of the product is 500 mm to 100000 mm. Therefore, the rotation speed of the rubbing roll can be adjusted so that the product is within the desired range.

The rubbed band base material B14 conveyed downstream of the rubbing roll B 130 is continuously guided to proceed along the cylindrical surface of the downstream side pre-roll B 150. By such an induction, the conveying direction of the strip-shaped substrate rotates at an angle exceeding 0 degrees. The pre-roll B150 is a conveying roll provided in a state in which it can freely rotate around the axis B15X by a support (not shown) supporting the shaft. Therefore, the pre-roll B 150 rotates in the direction of the arrow BR3 following the belt-like base material to be conveyed.

In this example, the pre-roll B150 is a conveying device for conveying the strip-shaped substrate in a grip state, like the pre-roll B110, and the rotation axis of the rotation in the conveying direction by the pre- And is orthogonal to the conveying direction of the strip-like base material from the start of contact with the pre-roll B150 to the end of the contact. In this example, the axis B11X of the pre-roll B110 and the axis B15X of the pre-roll B150 are arranged in parallel.

The strip-like base material B16 conveyed downstream of the downstream-side pre-roll B150 is a rubbed strip-like base material, and may optionally be provided in the preservation or use process. For example, the strip-like base material B16 may be conveyed as it is to a line for carrying out the coating process of the liquid crystal composition as it is, or may be stored as a wound roll state by a suitable winding device.

By providing a suitable device such as a nip roll, a winding device, etc. on the upstream side, the downstream side, or both of the rubbing device B100, the belt-like base material can be conveyed at an appropriate line speed and tension. The line speed and tension can be suitably set to appropriate values in accordance with the strip-shaped substrate to be used and the rubbing conditions desired. For example, the line speed can be preferably 1 to 50 m / min. The tensile force is preferably 30 to 500 N / m as a linear tensile force.

B1. 1. Remaining amount]

In the embodiment B (i) shown in Figs. 19 to 20, twisting occurs in the conveying path of the strip-shaped substrate in the vicinity of the rubbing roll B 130, and as a result, the length of the conveying path of the strip- And becomes nonuniform across the width direction. Concretely, the pass lines BP10-1 to BP10-7 of the strip-shaped base material from the time when the contact with the pre-roll B110 shown in Fig. 20 is completed to the time when the contact with the pre-roll B150 is started The length becomes uneven. More specifically, the pass lines BP10-1 and BP10-7 at the ends become the longest, the pass line BP10-5 at the center becomes the shortest, the middle pass line is shorter than the end pass line, And is longer than the pass line at the center. When such unevenness occurs in the length of the pass line, when the strip-shaped substrate to be conveyed comes into contact with the rubbing roll B 130, the tension at the center portion becomes weaker than the tension at the end portion. Shaped substrate having an insufficient degree of elongation or shrinkage, the band-like base material in the central portion remains in the state of being unevenly loosened at the central portion. As a result, the contact pressure of the strip-shaped base material with respect to the rubbing roll becomes uneven, and the degree of rubbing becomes uneven.

In the manufacturing method of Embodiment B, by defining the difference in the width direction of the length of the pass line as the remaining amount, and keeping the relationship between the remaining amount and other conditions within a specific range, the contact pressure of the strip- The degree of rubbing can be made uniform, and the degree of rubbing can be made uniform.

In the embodiment B, the remaining amount is determined by defining the pass line of the strip-shaped substrate conveyed over the rubbing roll as follows, measuring or calculating the length of the pass line at various positions in the width direction of the strip- And is obtained from measurement results or calculation results of these lengths. The method for obtaining the specific residual amount is as follows.

The roll closest to the rubbing roll among the rolls carrying the strip-shaped base material on the upstream side of the rubbing roll in a gripped state is a viewpoint roll. Further, among the rolls that carry the strip-shaped substrate on the downstream side of the rubbing roll in a gripped state, the end roll closest to the rubbing roll is used.

Subsequently, on the main surface of the view roll, a line on the main surface of the roll, which is the start point of the pass line, is set. The line at the start of this pass line is set based on the position where the strip-shaped substrate to be conveyed falls from the view roll. The timing at which the strip-like base material falls off the viewpoint roll may be simultaneous throughout the width direction of the strip-like base material or may not be simultaneous throughout the widthwise direction of the strip-like base material due to the twisting of the conveyance path. Therefore, a line at a point where the strip-shaped base material at the earliest point on the main surface of the viewpoint roll falls off the viewpoint roll and a plane including the axis of the viewpoint roll intersects the main surface of the viewpoint roll is defined as a line at the start point of the pass line. When the viewpoint roll is a cylindrical roll, the line at the starting point of the pass line is a line on the main surface of the roll, parallel to the axis of the roll, passing through the point at which the strip- . For example, as shown in Fig. 21, when the position where the strip-like base material B13 falls off the pre-roll B110 as the view roll is the position indicated by the oblique line BL11 with respect to the axis B11X, , The point at which the strip-shaped base material B13 drops from the pre-roll B110 at the earliest point is a point indicated by the point BQ10-1. Therefore, a line at a position where the plane including the points BQ10-1 and B11X intersect with the main surface of the pre-roll B110 is a straight line indicated by a line BL13, and the straight line BL13 is a line It is stipulated as a line of time.

Subsequently, on the main surface of the end roll, a line on the main surface of the roll, which is the end point of the pass line, is set. The line of the end point of the pass line is set on the basis of the position where the strip-like substrate to be conveyed is in contact with the end point roll. The timing at which the strip-like base material contacts the end point rolls may be simultaneous throughout the widthwise direction of the strip-like base material or may not be simultaneous throughout the widthwise direction of the strip-shaped base material due to twisting of the conveyance path. Therefore, the line at the end where the strip-shaped base material contacts the end roll at the latest on the main surface of the end roll and the plane including the axis of the end roll and the main surface of the end roll intersect is defined as the line at the end point of the pass line. When the end roll is a cylindrical roll, the line of the end point of the pass line is a straight line on the main surface of the roll, parallel to the axis of the roll, and the line passing through the point where the strip- .

Subsequently, pass lines are defined at various positions in the width direction of the strip-shaped substrate. The point of view of the pass line is specified at two points at both ends of a straight line at the start point of the specified pass line and at five points or more at equal intervals on the inner side of both ends. Therefore, the number (n) of pass lines becomes 7 or more. For example, in the example shown in Fig. 21, the points BQ10-1 and BQ10-7 on the straight line BL13 at the start point of the pass line and the points BQ10-2 to BQ10-6 on the inside thereof, The time point of the pass line is defined. The end point of the pass line is defined by two points at both ends of the straight line at the end point of the specified pass line and at the same number of points at the same time Of the Act. A line connecting the start point and the end point of a corresponding pass line on the conveyance path is defined as a pass line. The upper limit of the number (n) of pass lines is not particularly limited, and may be a large number indefinitely, but may be 100 or less for convenience of operation. Or the number of pass lines may be a number in which the interval of the pass lines in the film width direction is 10 mm to 500 mm.

Subsequently, the lengths of the respective pass lines are measured. The measurement of the pass line can be carried out by measuring the length of the thread by striking the thread across the end point at the time point of the pass line in the state of taking out the strip-shaped substrate. In this case, the thread strikes along the position where the strip-shaped substrate is transported so as not to be loosened. For example, the thread strikes the rubbing roll even at a position where the strip-shaped base is lifted from the rubbing roll by wrinkles or the like. Alternatively, instead of actual measurement, such a pass line may be obtained by calculation based on the information of the position of the roll.

The remaining amount epsilon k (k = 1, 2, ... n) and the maximum value epsilon max of the remaining pass through the obtained lengths P1, P2, (3) and (4) from the short pass line length (Pmin) and the longest pass line length (Pmax).

? (%) = (Pk-Pmin) / Pmin x 100 (%) (3)

? max (%) = (Pmax-Pmin) / Pmin x 100 (%) (4)

The mean value of the residual amount (εavg) is calculated using the trapezoidal formula of the approximate formula of the integral. That is,? Avg can be obtained by the following equation (5).

B1. 2. Relation between remaining amount and other parameters]

In the production method of Embodiment B, the band-like substrate has a Young's modulus E (Pa), a thickness d (m), a width w (m) in the transport direction and a maximum value (? max (%)) and the average value (? avg (%)) of the remaining amount satisfy the formula (1).

(? max-? avg) Edw < 30T Expression (1)

In the manufacturing method of Embodiment B, by satisfying the formula (1), the unevenness of the contact pressure of the strip-shaped substrate with respect to the rubbing roll can be made within a permissible range, and further, can do. Specifically, when there is a portion having a large residual amount of the strip-shaped substrate and a small portion, a tension is applied to a portion having a small residual amount, whereby the strip-shaped substrate can be stretched and the remaining amount can be eliminated. By satisfying the formula (1), the ratio of the tension required for eliminating such residual amount to the entire tension applied can be set to a predetermined ratio or less. As a result, a predetermined ratio or more of all the applied tensile forces can be used to apply a pressure to bring the strip-shaped base material into contact with the rubbing roll. As a result, it is possible to make the range of the rubbing uniform within the allowable range of the unevenness of the contact pressure of the strip-shaped base material with respect to the rubbing roll. the value of (Edmax-eavg) Edw is preferably less than 25T, more preferably less than 20T. (? max-? avg) The lower limit of the value of Edw is not particularly limited, and is ideally zero, but may be, for example, 0.05 T or more.

The product Ed of the Young's modulus (E) and the thickness (d) in the conveying direction of the strip-shaped substrate is preferably not more than 400,000 Pa · m, more preferably not more than 250,000 Pa · m. When the value of Ed is used as the band-like substrate as described above, rubbing satisfying the formula (1) can be easily achieved. The lower limit of the value of Ed is not particularly limited and may be arbitrarily set within a range capable of smoothly carrying and rubbing. For example, it may be 25,000 Pa · m or more.

When a material having a low Young's modulus is employed, rubbing satisfying the formula (1) can be easily achieved even when the thickness of the strip-like base material is large, and when a material having a high Young's modulus is employed, When the thickness is thin, rubbing satisfying the formula (1) can be easily achieved. From the viewpoint of increasing the degree of freedom of the thickness of the strip-shaped substrate, it is preferable that the Young's modulus (E) in the conveying direction of the strip-shaped substrate is low. Specifically, the Young's modulus (E) is preferably 3,000 MPa or less, and more preferably 2,500 MPa or less. The lower limit of the Young's modulus (E) is not particularly limited, but may be, for example, 100 MPa or more.

The width w of the strip-shaped substrate is preferably 0.2 m or more, more preferably 0.4 m or more, and preferably 4 m or less, and more preferably 3 m or less.

The thickness d of the strip-shaped substrate is preferably 10 10 ^-6 m (10 탆) or more, more preferably 20 10 ^-6 m (20 탆) or more, and preferably 500 10 ^-6 m (500 占 퐉) or less, and more preferably 200 占^10-6 m (200 占 퐉) or less.

B2. Embodiment B (ii)]

In the embodiment B (i) shown in Figs. 19 to 20, the axes B11X and B15X of the viewpoint roll and the end point rolls (the pre rolls B110 and B150) are parallel, and a rubbing roll (B130). As described above, since the axis of the viewpoint roll and the axis of the end point roll are parallel, the skew of the strip-like base material (the slope relationship in the carry-in direction and the carry- As a result, it is possible to easily place the rubbing device in a small space in a general-purpose production line. On the other hand, however, due to such a combination of the parallel viewpoint roll and the end point roll and the inclined rubbing roll, the conveying path of the belt-like substrate in the vicinity of the rubbing roll is twisted, and as a result, Uniformity over the width direction of the shape base material.

However, the present invention is not limited to this, and the positional relationship between the viewpoint roll, the rubbing roll, and the end point roll may be different from the above, and the unevenness of the length of the conveying path of the strip- Such an example will be described below as Embodiment B (ii).

22 to 24 are a side view, a top view and a rear view schematically showing another example of operation of the rubbing device of Embodiment B and the manufacturing method of Embodiment B using the same. The embodiment shown here will be described as embodiment B (ii). In Fig. 22, the rubbing device B400 is observed in the direction of the coordinate axis Y. In Fig. 23, the rubbing device B400 is observed in the direction of the coordinate axis Z. In Fig. 24, the rubbing device B400 is observed in the direction of the coordinate axis X .

The rubbing device B400 includes a rubbing roll B430, a pre-roll B410 on the upstream side, and a pre-roll B450 on the downstream side. In the operation of the rubbing device B400, the strip-like base materials B11 to B16 are transported in the direction of the arrow BR1. The shape and material of the rubbing roll and the pre-roll are the same as those of the rubbing roll and the pre-roll in the embodiment B (i). The conditions such as the line speed and the tension in the operation of the rubbing device B400 can be the same as those in the operation of the rubbing device B100 in the embodiment B (i).

The strip-shaped base material B11 fed into the rubbing apparatus B400 is guided to advance along the cylindrical surface of the upstream-side pre-roll B410. By such an induction, the conveying direction of the strip-shaped substrate rotates at an angle exceeding 0 degrees. The pre-roll B410 is a conveying roll provided so as to freely rotate around the axis B41X by a support (not shown) supporting the shaft. Thus, the pre-roll B410 is rotated in the direction of the arrow BR3 by the conveyed belt-like base material. Like the pre-roll B 110, the pre-roll B 410 can carry the strip-shaped substrate in a gripped state.

The strip-like base material B13 conveyed downstream of the upstream-side pre-roll B410 is then guided to proceed along the cylindrical surface of the rubbing roll B430. In this example, the carrying-in direction of the strip-like base material B13 is a horizontal direction, that is, a direction parallel to the XY plane. The axis B43X of the rubbing roll B430 is parallel to the XY plane and inclined at an angle of 45 DEG with respect to the coordinate axis Y. [

The rubbing roll B430 is driven to rotate in the direction of the arrow BR2 about the axis B43X by a driving device (not shown), whereby the cylindrical surface of the rubbing roll B430 is rotated on one side And the rubbing process is performed.

In Embodiment B (ii), the rubbing roll B430 is brought into contact with the strip-shaped substrate at an enclosure angle of 60 DEG, thereby rotating the strip-shaped substrate in the conveying direction. In addition, the angle formed by the conveying direction of the strip-shaped substrate and the rotation axis of the rubbing roll is non-orthogonal.

The rubbed band base material B14 conveyed downstream of the rubbing roll B430 is guided to continue along the cylindrical surface of the downstream side pre-roll B450. By such an induction, the conveying direction of the strip-shaped substrate rotates at an angle exceeding 0 degrees. The pre-roll B450 is a transport roll provided in a state in which it is freely rotatable about a shaft B45X by a support (not shown) supporting the shaft. Therefore, the pre-roll B450 is rotated in the direction of the arrow BR3 by the conveyed belt-like base material.

In this example, the pre-roll B450 is a conveying device that conveys the strip-shaped substrate in a grip state, like the pre-roll B410, and the rotary shaft of the rotation in the conveying direction by the pre- And is orthogonal to the conveying direction of the strip-shaped base material from the start of contact with the pre-roll B450 to the end of the contact. In this example, the axis B41X of the pre-roll B410 is parallel to the coordinate axis Y, while the axis B45X of the pre-roll B450 is greatly inclined with respect to the coordinate axis Y. [ Therefore, the axis B41X of the pre-roll B410 and the axis B45X of the pre-roll B450 are largely deviated from the parallel state.

The strip-like base material B16 conveyed downstream of the downstream-side pre-roll B450 is a rubbed strip-like base material, and may optionally be provided in a storage or use process.

In Embodiment B (ii), the relationship between the axis B41X of the pre-roll B410 and the axis B45X of the pre-roll B450 is arranged in a relationship deviating from a parallel state as shown in Figs. 22 to 24 . As described above, if the relationship between the axes of the pre-rolls on the upstream and downstream sides of the rubbing roll is arranged in a non-planar state, it is difficult to easily place the rubbing device in a small space in a general production line. By this arrangement, however, it is possible to bring the direction of conveyance of the rubbing roll and the conveying direction of the rubbing roll close to each other in the width direction of the belt-like base material. As a result, The distortion of the path can be reduced, and as a result, the unevenness of the length of the conveying path of the strip-shaped substrate can be reduced. Therefore, the value of epsilon max-eavg can be reduced. For example, the Young's modulus (E) in the transport direction of the strip-shaped substrate, the product (Ed) Rubbing satisfying the expression (1) can be easily achieved even when the product Edw of the width W is large. Specifically, the value of? Max-? Avg is preferably less than 0.02%, more preferably less than 0.01%. The lower limit of the value of epsilon max-epsilon avg is not particularly limited, and is ideally zero, but it may be 0.0005% or more, for example.

In the example shown in Figs. 22 to 24, the rubbing roll B430 is provided so that the rotational axis B43X is in the horizontal direction, and before the position where the contact of the conveyed band base material B13 with the rubbing roll B430 is started Shaped substrate B13 in a direction perpendicular to the direction in which the strip- As described above, by adjusting the axial direction of the downstream pre-roll B450 after bringing the conveying direction into a horizontal state, the conveying direction can be adjusted while maintaining the same state throughout the width direction, and further, It is possible to easily position the pre-roll and the rubbing roll in which both the direction and the outgoing direction are the same across the width direction. More specifically, the pre-roll B410 and the rubbing roll B430 are horizontally disposed, and the pre-roll B410 and the rubbing roll B430 are disposed horizontally, since the positioning of the pre-roll and the rubbing roll is ordinarily provided to adjust the angle with respect to the horizontal pedestal, In addition, positioning for adjusting the conveying direction of the strip-shaped substrate horizontally can be relatively easily performed. Therefore, precise positioning can be easily performed by performing positioning in such a manner that only the axial direction of the pre-roll B450 is adjusted after such positioning is performed.

Shaped base material B14 at the position where the contact between the strip-shaped base material to be carried out and the rubbing roll is terminated and the axial direction of the pre-roll B410 is adjusted, A decision can be made. However, the complicated adjustment of the axis of the pre-roll upstream in the upstream may affect the transport path in the downstream, so it is easier to adjust the carry-in direction of the loaded strip-like base material B13 to be horizontal.

[B3. Other Embodiments]

The rubbing apparatus of the present invention and the manufacturing method of the present invention are not limited to the above-described forms, and any modifications may be added to the above-described forms.

For example, in the above-mentioned Embodiment B (ii), in order to reduce unevenness of the length of the conveying path of the strip-shaped substrate in the vicinity of the rubbing roll, the relationship between the axes of the pre- However, the means for reducing the unevenness of the length of the conveying path is not limited to this. For example, a crown roll (a roll having a swollen middle portion and a thin end portion) is employed as at least one of a rubbing roll and a pre-roll on its upstream and downstream sides, The unevenness of the length of the conveying path can be reduced. Or an inverted crown roll (a roll having a shape with an elongated central portion and an expanded end portion) is employed, and the conveyance is performed in such a manner that the roll is in contact with the surface opposite to the rubbing surface, whereby unevenness in the length of the conveying path can be reduced have. It is possible to reduce irregularity of the length of the conveying path by using the floating conveying apparatus and installing it at a proper position between the viewpoint roll and the end point roll. The float conveying device has a conveying surface having the same shape as the main surface or a part of the conveying roll, and has a fine number of air ejecting holes on the conveying surface, thereby ejecting air from the air ejecting holes, Like substrate can be guided along the conveying surface.

C1. Embodiment C (i)]

Next, the present invention relating to Embodiment C will be described.

The manufacturing method of Embodiment C is a manufacturing method of a rubbed strip-shaped substrate, and is characterized in that a specific rubbing step of rubbing the strip-shaped substrate and an angle exceeding 0 deg. (Hereinafter simply referred to as &quot; rotating step &quot;) of rotating the strip-shaped substrate by a conveying device that rotates the conveying direction of the strip-shaped substrate. In the rubbing process, the strip-shaped base material carried from the upstream of the transport path rubs against the rubbing roll rotating around the rotation axis, and is transported downstream of the transport path.

25 to 26 are a side view and a top view schematically showing an example of the operation of the rubbing device of Embodiment C and the manufacturing method of Embodiment C using the rubbing device. The present invention will be described with reference to the form shown in embodiment C (i). In Fig. 25, the rubbing apparatus C100 is observed in the coordinate axis Y direction, and in Fig. 26, the rubbing apparatus C100 is observed in the coordinate axis Z direction.

The rubbing apparatus C100 includes a rubbing roll C 130, a pre-roll C 110 on the upstream side thereof, and a pre-roll C 150 on the downstream side. The rubbing device C100 further includes a flotation conveying device C120 between the rubbing roll C130 and the preroll C110 and a flotation conveying device C140 between the rubbing roll C130 and the preroll C150 . In the operation of the rubbing apparatus C100, the strip-like base materials C11 to C16 are transported in the direction of arrow CR1.

The strip-shaped base material C11 carried into the rubbing apparatus C100 is guided to proceed along the cylindrical surface of the upstream-side pre-roll C10. By such an induction, the conveying direction of the strip-shaped substrate rotates at an angle exceeding 0 degrees. The pre-roll C1010 is a conveying roll provided so as to be freely rotatable about a shaft C11X by a support (not shown) supporting the shaft. Therefore, the pre-roll C 110 rotates in the direction of the arrow CR 3 with the conveyed belt-like base material.

In this example, the rotation axis of the rotation in the transport direction by the pre-roll C 110 coincides with the rotation axis C 11 X of the pre-roll C 110 itself, and the band between the start of contact with the pre- And is perpendicular to the conveying direction of the shape base material. In this example, the axis C11X of the pre-roll C110 is also parallel to the coordinate axis Y. [

The angle formed by the pre-roll C 110 and the conveying direction may have an error within +/- 0.5 degrees from the orthogonal angle within a range not obstructing the conveyance. When the rotational axis of the rotation in the carrying direction is perpendicular to the carrying direction of the belt-like base material in contact with within the range of the tolerance, the pre-roll C110 can carry the belt-like base material in a gripped state.

The strip-shaped base material C12 conveyed downstream of the upstream-side pre-roll C110 is guided to continue along the conveying surface of the float conveying device C120, and the conveying direction thereof is rotated. Thus, the floating carrier C120 functions as a transport device for carrying out the rotating process. In this example, the carrying-in direction of the strip-like base material C12 is a horizontal direction, i.e., a direction parallel to the XY plane. The axis C12X of the floating carrier C 120 is parallel to the XY plane and inclined at an angle of 45 degrees with respect to the coordinate axis Y. [

The floating carrier C120 will be described in more detail with reference to Figs. 29 to 31. Fig. 29 to 31 are a perspective view, a side view, and a bottom view schematically showing the flotation conveying apparatus C120 in the rubbing apparatus C100 shown in Figs. 25 and 26. Fig. 29 to 31, the flotation conveying apparatus C120 has a carry section C123 having a carry surface C123S and an air introduction section C124 (not shown in Figs. 25 and 26) . The air introduction portion C124 has an apparatus (not shown) for introducing the pressurized air into the conveying portion C123 as a pressure adjustable sun. The carry section C123 is a semi-cylindrical shape having the axis C12X as its axis and the carry surface C123S is a curved surface having a cylindrical shape. A plurality of holes are formed in the carry surface C123S of the carry section C123 and communicate with the air introduction section so as to eject the air introduced from the air introduction section C124.

In the use of the floating carrier C 120, the strip substrate is pulled on the conveying surface C123S in a tensioned state in the direction of the arrow CR4. Because of this tension, the strip-shaped substrate is biased in the direction of arrow CR5. On the other hand, by ejecting air from the hole of the conveying surface C123S, the belt-shaped substrate is biased in the direction of arrow CR6. By arbitrarily adjusting the jetting pressure of the air, it is possible to balance the agglomeration caused by the tension of the strip substrate and the agglomeration caused by the ejection of the air, and as a result, It is possible to form the air layer by the air pressure of the air and float and convey the belt-like base material along the conveying surface C123S in a non-contact state with the conveying surface C123S. As a result of such floating and conveying, it is possible to carry the substrate C12X with the rotation in the carrying direction with the axis C12X in the direction of the rotating axis. In addition, since the strip-shaped substrate does not contact the transport surface C123S, it is possible to transport the strip-shaped substrate in a direction parallel to the axis C12X (a direction indicated by an arrow CR7 in Fig. 31). CR4 direction and CR7 direction. As a result, it becomes possible to convey the strip-shaped substrate in the inclined conveying direction indicated by the arrow CR1 in Fig. 31, which is a non-orthogonal direction with respect to the axis C12X. When the roll used as the grip roll is transported in the oblique direction, friction occurs between the surface of the roll and the surface of the belt-shaped substrate. However, in the case of using the flotation conveying device, It becomes possible to achieve without involving friction.

The angle that is &quot; non-orthogonal &quot; may be any direction other than the right orthogonal direction. Specifically, for example, the angle formed by the conveying direction of the belt-shaped substrate and the rotation axis direction of rotation in the conveying direction by the conveying device Is more than 0 DEG, preferably not less than 35 DEG, more preferably not less than 40 DEG, yet preferably not more than 89.5 DEG, more preferably not more than 55 DEG and even more preferably not more than 50 DEG.

The strip-like base material C13 conveyed to the downstream side of the float conveying apparatus C120 is then guided to proceed along the cylindrical surface of the rubbing roll C130. In this example, the axis C13X of the rubbing roll C 130 is parallel to the XY plane and inclined at an angle of 45 DEG with respect to the coordinate axis Y. The material of the rubbing roll used in the manufacturing method of Embodiment C and the rubbing device of Embodiment C is not particularly limited and may be a roll provided with a material suitable for rubbing, such as nonwoven fabric, on the cylindrical surface. Unlike the pre-roll C 110, the rubbing roll C 130 is driven by a driving device (not shown) to rotate in the direction of the arrow CR 2 about the axis C 13 X, One surface of the strip-shaped substrate is rubbed, and a rubbing process is performed.

In the production method of Embodiment C, the rubbing roll is brought into contact with the strip-shaped substrate at a surrounding angle exceeding 0 °, thereby rotating the strip-shaped substrate in the conveying direction. In addition, the angle formed by the conveying direction of the strip-shaped substrate and the rotation axis of the rubbing roll is non-orthogonal. The conveying direction of the strip-shaped substrate referred to herein is the conveying direction of the strip-shaped substrate surrounding the rubbing roll. In the example of embodiment C (i), the direction in which the strip-shaped base material surrounding the rubbing roll C 130 is conveyed and the angle formed by the axis C 13 X of the rubbing roll C 130 are non-orthogonal. Thus, by making contact at a surrounding angle exceeding 0 DEG, it becomes possible to bring the strip-shaped base material into contact with the rubbing roll at a high pressure. In addition, by forming such a non-orthogonal angle, oblique rubbing by the rubbing roll is achieved.

The encircling angle is preferably 5 DEG or more, more preferably 10 DEG or more, and preferably 120 DEG or less, and more preferably 90 DEG or less. By setting the encircling angle within this range, it becomes possible to impart a high alignment regulating force to the film without giving an excessive load. The angle formed by the conveying direction of the strip-shaped substrate and the rotation axis of the rubbing roll is called &quot; oscillation angle &quot;. The vibration angle is an angle range of more than 0 DEG and less than 89.5 DEG, preferably 10 DEG or more, more preferably 35 DEG or more, particularly preferably 40 DEG or more, and more preferably 80 DEG or less, 55 DEG or less, particularly preferably 50 DEG or less. In the oblique rubbing, it is often required to perform rubbing so as to have the alignment regulating force at 45 degrees with respect to the longitudinal direction of the strip-shaped base material. By setting the vibration angle to the above range, Can be easily achieved.

In the production method of Embodiment C, the rotation speed of the rubbing roll can be arbitrarily adjusted so as to obtain a desired rubbing amount. The amount of rubbing can be represented by the moving distance relative to the strip-like base material of the cylindrical surface of the rubbing roll, from the start of the contact between the strip-shaped substrate and the rubbing roll to the end of the contact in the conveying path. Specifically, the rotation speed of the rubbing roll can be adjusted so that the product of the peripheral speed of the cylindrical surface of the rubbing roll and the time when the rubbing roll is in contact with the strip-shaped base material is in a desired range. More specifically, the peripheral velocity of the cylindrical surface of the rubbing roll is determined from the rubbing roll diameter d (mm) and the rotation speed t (rpm) by? Dt / 60 (mm / sec), and the rubbing roll is in contact with the strip- the time line speed v (mm / minute), surrounding so obtained in each θw (°) and the oscillation angle φ from (°) (πdθw / 360) ÷ (vsinφ / 60) ( second), and their product of (π ² d ^2? Wt) / (360? Sin?) (Mm). The preferred range of the product is 500 mm to 100000 mm. Therefore, the rotation speed of the rubbing roll can be adjusted so that the product is within the desired range.

The rubbed strip-shaped base material C14 conveyed downstream of the rubbing roll C130 is guided to continue along the conveying surface of the float conveying device C140, and the conveying direction thereof is rotated. Thus, the floating carrier device C140 functions as a carrier device for performing the rotating process. The floating transfer device C140 is the same device as the floating transfer device C120. Like the floating transfer device C120, the floating transfer device C140 has its axis C14X parallel to the XY plane and inclined at an angle of 45 degrees with respect to the coordinate axis Y. The carrying-out direction of the rubbed strip-like base material C15 carried out from the floating carrier C 140 is a direction parallel to the XY plane.

The rubbed strip-like base material C15, which is conveyed downstream of the float conveying apparatus C140, is guided to continue along the cylindrical surface of the downstream-side pre-roll C150. By such an induction, the conveying direction of the strip-shaped substrate rotates at an angle exceeding 0 degrees. The pre-roll C 150 is a conveying roll provided so as to be freely rotatable about a shaft C 15 X by a support (not shown) supporting the shaft. Therefore, the pre-roll C 150 rotates in the direction of the arrow CR3 with the conveyed belt-like base material.

In this example, the pre-roll C 150 is a grip roll similarly to the pre-roll C 110, and the rotational axis of the rotation in the carrying direction by the pre-roll C 150 coincides with the rotational axis C 15X of the pre- And is orthogonal to the conveying direction of the strip-shaped substrate between the start of contact with the pre-roll C 150 and the end of contact. In this example, the axis C15X of the pre-roll C 150 is parallel to the coordinate axis Y. [

The strip-like base material C16 conveyed downstream of the downstream-side pre-roll C 150 may be optionally provided in a storage or use process as a rubbed strip-like base material. For example, the strip-shaped base material (C16) can be conveyed as it is to a line for carrying out the coating process of the liquid crystal composition as it is, or can be stored as a wound roll state by a suitable winding device.

By providing a suitable device such as a nip roll, a winding device or the like on the upstream side, the downstream side, or both of the rubbing device C100, the belt-like base material can be conveyed at an appropriate line speed and tension. The line speed and tension can be arbitrarily set to appropriate values in accordance with the strip-shaped substrate to be used and the rubbing conditions desired. For example, the line speed can be preferably 1 to 50 m / min. The tensile strength can be preferably 30 to 500 N / m.

C1. 1. Relationship between the rubbing roll and the belt-shaped substrate]

In the rubbing step of the manufacturing method of Embodiment C, the carrying direction of the strip-shaped substrate is the same throughout the width direction of the strip-shaped substrate at the position where the contact between the strip-shaped substrate carried by the rubbing roll and the rubbing roll is started, Like substrate in the widthwise direction of the strip-shaped substrate at the position where the contact between the strip-shaped substrate carried out from the rubbing roll and the rubbing roll is terminated, and the transport direction of the strip- Is parallel to the rotation axis of the rubbing roll. Further, in the rubbing apparatus of Embodiment C, the rubbing roll and other supporting apparatus are arranged so as to be in such a positional relationship.

This characteristic will be described with reference to Figs. 27 to 28. Fig. 27 is a side view schematically showing the relationship between the flotation conveying device C120, the rubbing roll C130, the flotation conveying device C140 and the belt-shaped substrate in the rubbing device C100 shown in Figs. 25 to 26, Fig. 28 is a side view schematically showing the relationship between the rubbing roll C130 and the strip-like base material C14 carried out therefrom. In Fig. 27, the rubbing roll C130 is observed in the direction of the axis C13X, and in Fig. 28, the rubbing roll C130 is observed in the Y coordinate axis direction.

27 to 28, the strip-like base material C13 which is removed from the floating carrier C 120 and carried into the rubbing roll C 130 moves in the carrying-in direction indicated by the arrow CR 13, The contact with the rubbing roll C 130 is started. Therefore, the carrying-in direction of the strip-shaped substrate at the position where the contact between the strip-shaped base material fed into the rubbing roll and the rubbing roll starts is the direction indicated by the arrow CR13.

After that, the strip-shaped base material surrounds the rubbing roll C 130 with the envelope angle C? W13, and terminates the contact with the rubbing roll C 130 at the position C 132. The strip-shaped base material C14 carried out from the rubbing roll C130 advances in the carrying-out direction indicated by the arrow CR14. Therefore, the direction in which the strip-shaped substrate is taken out from the position at which the contact between the strip-shaped substrate carried out from the rubbing roll and the rubbing roll is terminated is the direction indicated by the arrow CR14.

The outgoing direction indicated by the arrow CR14 is the same throughout the width direction of the strip-shaped base material C14. 28, the direction in which the strip-shaped base material C14 is carried out from the rubbing roll C130 in the position C132 is indicated by the arrows CR14-1 to CR14-5 in the width direction, And they are in the same direction. In this example, the carrying direction shown by the arrow CR13 is also the same throughout the width direction of the strip-like base material C13.

The &quot; same &quot; in the carrying direction or the carrying out direction as referred to herein may include a tolerance within a range that does not adversely affect the effect of the present invention. For example, with reference to the carry-in or carry-out direction (the carry-out direction indicated by the arrow CR14-3 in the example of Fig. 28) at the center in the belt-like substrate width direction, Direction can be made the same direction.

In the examples shown in Figs. 25 to 28, the flotation conveying apparatuses C120 and C140 are disposed immediately upstream and immediately downstream of the rubbing roll C130, and the flotation conveying apparatuses C120 and C140 are disposed immediately downstream and downstream of the rubbing roll C130, Direction is made parallel to the rotational axis of the rubbing roll, the carrying direction of the rubbing roll and the carrying-out direction from the rubbing roll are the same across the width direction of the strip-shaped base. This makes it possible to bring the strip-shaped base material into contact with the rubbing roll at a uniform pressure without applying a twist, and further to achieve the oblique rubbing in which the degree of rubbing is uniform. In addition to this, the direction in which the strip-like base material C16 is carried out from the rubbing device C100 is not skewed with respect to the carrying direction of the strip-shaped base material C11 carried into the rubbing device C100. Here, &quot; meandering &quot; refers to a relationship between the carrying direction and the carrying out direction, which can not be corrected by a parallel relationship with the grip roll. In the manufacturing method and rubbing apparatus of Embodiment C, by making the direction in the carrying-out direction with respect to the carrying-in direction small in the amount of the meandering, it is possible to carry out the production at a low cost without deriving wrinkles or scratches.

The term &quot; parallel &quot; between the rotation axis direction of the rotation in the carrying direction and the rotation axis of the rubbing roll by the carrying device mentioned here may include a tolerance within a range that does not adversely affect the effect of the present invention. For example, a direction in which the angle formed by these is within 0.5 is referred to as a &quot; parallel &quot; direction.

C12X, C13X, and C14X of the pre-roll C110, the lifting and conveying device C120, the rubbing roll C130, the lifting and conveying device C140 and the pre-roll C150 in Embodiment C (i) And C15X are all installed in the horizontal direction. By arranging the axes of these elements horizontally, the apparatus of Embodiment C can be configured by adjusting these directions in the XY plane, so that accurate adjustment can be easily performed. Here, the axis is &quot; horizontal &quot;, which may include a tolerance within a range that does not adversely affect the effect of the present invention. For example, a direction in which the angle formed by the horizontal plane and the axis is within 0.5 degrees can be referred to as a "horizontal" direction.

The characteristics of the relationship between the rubbing roll of Embodiment C and the strip substrate will be further described by comparison with the prior art. 13 to 14 are a side view and a top view schematically showing an example of the operation of the rubbing apparatus of the prior art and the conventional manufacturing method using the same. 13 to 14, the rubbing apparatus A 1300 includes a rubbing roll A 1330, a pre-roll A 1310 (grip roll) immediately upstream thereof, and a pre-roll A 1350 (grip roll) . In the operation of the rubbing apparatus A1300, the strip-like base materials A11 to A16 are transported in the direction of the arrow AR1. The axis A131X of the pre-roll A 1310 and the axis A 135X of the pre-roll A 1350 are arranged in parallel.

In the examples shown in Figs. 13 to 14, twisting occurs in the conveying path of the strip-like base material near the rubbing roll A 1330, and as a result, at the position where the contact between the rubbing roll and the strip- The direction in which the strip-like base material is fed is not the same across the widthwise direction of the strip-like base material, and the direction in which the strip-shaped base material is conveyed out from the rubbing roll ends in contact with the rubbing roll, They are not the same across the width direction of the substrate. More specifically, as shown in Fig. 15, the position A1332 at which the belt-like base material finishes contact with the rubbing roll A1330 is in contradiction with the axis A133X of the rubbing roll A1330, Like base material A14 carried out in the state of being taken out of the belt-like base material are not the same across the width direction of the band-like base material as indicated by arrows AR14-6 to AR14-10.

In the examples shown in Figs. 13 to 14 due to such twisting, the length of the conveying path of the strip-shaped substrate becomes uneven across the width direction of the strip-shaped substrate. Specifically, the conveying paths AP130-1 to AP130-5 of the strip-shaped substrate from the time when contact with the pre-roll A 1310 shown in Fig. 14 is completed until the contact with the pre-roll A 1350 is started The length becomes uneven. More specifically, the conveying paths AP130-1 and AP130-5 at the ends become the longest, the conveying path AP130-3 at the center becomes the shortest, and the intermediate conveying paths AP130-2 and AP130-4 Is shorter than the conveying path at the end portion, and is longer than the conveying path at the center portion. When such unevenness occurs in the length of the conveying path, the tension at the center portion becomes weaker than the tension at the end portion when the conveyed band-like substrate contacts the rubbing roll A 1330. Shaped substrate having a small degree of elongation or shrinkage, the strip-shaped base material in the central portion remains in a state of being unevenly loosened at the central portion. As a result, the contact pressure of the strip-shaped base material with respect to the rubbing roll becomes uneven, and the degree of rubbing becomes uneven. On the other hand, in the production method according to Embodiment C, it becomes possible to bring the strip-like base material into contact with the rubbing roll at a uniform pressure without twisting, and furthermore, oblique rubbing with uniform rubbing degree can be achieved.

In the examples of Figs. 13 to 14, when the interval between the pre-roll A 1310 and the pre-roll A 1350 is sufficiently long, the lengths of the transport paths are relatively uneven. However, in this case, there is a problem that the path through which the strip-shaped substrate is transported becomes long in a state in which it is not supported, a problem arises due to flapping of the film, or a space for installing a manufacturing facility becomes large. In Embodiment C, the length of the conveyance path from the grip roll on the upstream side closest to the rubbing roll to the grip roll on the downstream side closest to the rubbing roll is preferably 5 times or less the film width, more preferably, Or less. The lower limit of the length of the transport path is not particularly limited, but may be, for example, at least twice the film width.

By changing the position of the pre-roll of the rubbing apparatus A 1300 shown in Figs. 13 to 14, it is possible to reduce the twist of the conveying path of the strip-like base material in the vicinity of the rubbing roll A 1330. In that case, The degree of meandering increases with an increase in the enveloping angle of the rubbing roll A 1330. In the rubbing device according to Embodiment C and the rubbing device according to Embodiment C, It is possible to carry out the oblique rubbing in which the degree of rubbing is uniform in a state in which the carrying-out direction is not skewed with respect to the carrying-in direction.

C1. 2. Sum of rotation angle]

In the rubbing apparatus according to Embodiment C and the rubbing apparatus according to Embodiment C, the sum of the rotation angle of rotation of the strip-shaped substrate in the transport direction by the rubbing roll and the rotation angle of rotation in the transport direction by the transport apparatus is approximately 0 desirable.

27, the belt-like base material C12 carried into the floating carrier C121 is moved from its position C121 by the rotating process by the floating carrier C 120 And rotates at an angle C? W12 in the position C122. The strip-like base material C13 transported to the downstream side of the floating carrier C120 is continuously rubbed by the rubbing roll C130 so that its transport direction changes from the position C131 to the position C132 at an angle C? W13 ). The strip-like base material C14 carried out downstream of the rubbing roll C30 is continuously conveyed by the rotation step by the float conveyance device C140 so that the conveying direction thereof changes from the position C141 to the position C142 at the angle C? W14 ). Since the direction of rotation by the lifting and conveying devices C120 and C140 is opposite to the direction of rotation by the rubbing roll C130, one side is positive and the other side is negative, and by taking the absolute value thereof, The sum of the angles is obtained. For example, by setting C? W12 = C? W14 = 30 deg. And C? W13 = 60 deg., The sum of these becomes 0 deg.

By making the total sum of the rotation angles approximately 0 DEG, it is possible to easily obtain a conveyance path in which the conveying direction does not skew with respect to the conveying direction. Therefore, even when the enveloping angle of the rubbing roll is increased, it is possible to more easily realize the manufacturing method and the rubbing device in which the oblique rubbing in which the degree of rubbing is uniform is carried out in a state in which the carrying out direction does not meander with respect to the carrying-in direction.

It is to be noted that the sum of the rotational angles is approximately "0" includes the case of having a tolerance in a range not significantly deteriorating the effect of the present invention, in addition to the case of exactly 0 °. Concretely, it may be a value exceeding 0 degrees within a range in which correction of meander in an apparatus capable of correcting meander such as EPC (registered trademark) can be easily carried out. Specifically, it may be set to a range of preferably 5 ° or less, more preferably 2 ° or less.

C1. 3. Remaining amount]

If the carrying direction or the carrying out direction in Embodiment C is the same within the tolerance range over the width direction, the residual amount of the conveying path of the strip-shaped substrate becomes a small value.

In Embodiment C, the remaining amount is obtained by defining the pass line of the strip-shaped substrate conveyed over the rubbing roll as follows and measuring or calculating the length of the pass line at various positions in the width direction of the strip- And is obtained from measurement results or calculation results of these lengths. The method for obtaining the specific residual amount is as follows.

The grip roll on the upstream side closest to the rubbing roll is set as the view roll. Further, the grip roll on the downstream side closest to the rubbing roll is used as an end roll.

Subsequently, on the main surface of the view roll, a line on the main surface of the roll, which is the start point of the pass line, is set. The line at the start of this pass line is set based on the position where the strip-shaped substrate to be conveyed falls from the view roll. The timing at which the strip-like base material falls off the viewpoint roll may be simultaneous throughout the width direction of the strip-like base material or may not be simultaneous throughout the widthwise direction of the strip-like base material due to the twisting of the conveyance path. Therefore, a line at a point where the strip-shaped base material at the earliest point on the main surface of the viewpoint roll falls off the viewpoint roll and a plane including the axis of the viewpoint roll intersects the main surface of the viewpoint roll is defined as a line at the start point of the pass line. When the viewpoint roll is a cylindrical roll, the line at the start of the pass line is a straight line on the main surface of the roll parallel to the axis of the roll, and is a line passing through the point where the band-shaped base material is fastest on the main surface. For example, as shown in Fig. 37, when the position where the strip-like base material C13 falls from the pre-roll C110 as the view roll is the position indicated by the slope line CL11 with respect to the axis C11X, , The point at which the strip-like base material C13 falls off the pre-roll C1010 at the earliest point is a point indicated by the point CQ10-1. Therefore, a line at a position where the plane including the point CQ10-1 and the axis C11X intersect with the main surface of the pre-roll C1010 is a straight line indicated by a line CL13, and the straight line CL13 is a line It is stipulated as a line of time.

Subsequently, on the main surface of the end roll, a line on the main surface of the roll, which is the end point of the pass line, is set. The line of the end point of the pass line is set on the basis of the position where the strip-like substrate to be conveyed is in contact with the end point roll. The timing at which the strip-like base material contacts the end point rolls may be simultaneous throughout the widthwise direction of the strip-like base material or may not be simultaneous throughout the widthwise direction of the strip-shaped base material due to twisting of the conveyance path. Therefore, the line at the end where the strip-shaped base material contacts the end roll at the latest on the main surface of the end roll and the plane including the axis of the end roll and the main surface of the end roll intersect is defined as the line at the end point of the pass line. When the end roll is a cylindrical roll, the line of the end point of the pass line is a straight line on the main surface of the roll, parallel to the axis of the roll, and the line passing through the point where the strip- .

Subsequently, pass lines are defined at various positions in the width direction of the strip-shaped substrate. The point of view of the pass line is specified at two points at both ends of a straight line at the start point of the specified pass line and at five points or more at equal intervals on the inner side of both ends. Therefore, the number (n) of pass lines becomes 7 or more. For example, in the example shown in Fig. 37, the points (CQ10-1 and CQ10-7) at the both ends in the straight line CL13 at the start point of the pass line and the points CQ10-2 to CQ10-6 So that the viewpoint of the pass line is defined. The end point of the pass line is defined by two points at both ends of the straight line at the end point of the specified pass line and at the same number of points at the same time Of the Act. A line connecting the start point and the end point of a corresponding pass line on the conveyance path is defined as a pass line. The upper limit of the number (n) of pass lines is not particularly limited, and may be a large number indefinitely, but may be 100 or less for convenience of operation. Or the number of pass lines may be a number in which the interval of the pass lines in the film width direction is 10 mm to 500 mm.

Subsequently, the lengths of the respective pass lines are measured. The measurement of the pass line can be carried out by measuring the length of the yarn by placing the yarn across the end point at the start point of the pass line in the state of taking out the strip-shaped base material. In this case, the thread strikes along the position where the strip-shaped substrate is transported so as not to be loosened. For example, the thread strikes the rubbing roll even at a position where the strip-shaped base is lifted from the rubbing roll by wrinkles or the like. Alternatively, instead of actual measurement, such a pass line may be obtained by calculation based on the information of the position of the roll.

The remaining amount epsilon k (k = 1, 2, ... n) and the maximum value epsilon max of the remaining pass through the obtained lengths P1, P2, (3) and (4) from the short pass line length (Pmin) and the longest pass line length (Pmax).

? (%) = (Pk-Pmin) / Pmin x 100 (%) (3)

? max (%) = (Pmax-Pmin) / Pmin x 100 (%) (4)

In Embodiment C, the maximum value? Max of this residual amount is preferably 0% to 0.1%, more preferably 0% to 0.05%.

The width of the strip-shaped substrate is preferably 0.2 m or more, more preferably 0.4 m or more, and preferably 4 m or less, and more preferably 3 m or less. In the embodiment C, good rubbing can be performed over the entire width direction even with such a band-shaped substrate.

C2. Embodiment C (ii)]

In the embodiment C (i), the transporting device is disposed upstream and downstream of the rubbing roll, and the rotating process is performed both upstream and downstream of the rubbing roll. However, the present invention is not limited to this, It may be carried out only in one of upstream and downstream of the rubbing roll. Such an example is described below as embodiment C (ii).

32 and 33 are a side view and a top view schematically showing another example of the operation of the rubbing device of Embodiment C and the manufacturing method of Embodiment C using the rubbing device and the rubbing device C800 Of the rubbing roll C 130, the lifting and conveying apparatus C 840, and the belt-like base material in FIG. The embodiment shown here is described as embodiment C (ii). The rubbing apparatus C800 shown in Figs. 32 and 33 includes a rubbing roll C130, a pre-roll C810 on the upstream side thereof, and a pre-roll C850 on the downstream side. The rubbing device C800 further includes a floating carrier C840 between the rubbing roll C130 and the pre-roll C850. However, the rubbing device C800 does not have a transport device between the pre-roll C810 and the rubbing roll C130.

In the operation of the rubbing apparatus C800, the strip-like base materials C11 to C16 are transported in the direction of arrow CR1. The strip-shaped base material C11 carried into the rubbing apparatus C800 is guided to proceed along the cylindrical surface of the upstream-side pre-roll C810. By such an induction, the conveying direction of the strip-shaped substrate rotates at an angle exceeding 0 degrees. The pre-roll C810 is a grip roll installed in a state in which it can freely rotate around the axis C81X. Therefore, the pre-roll C810 is rotated in the direction of the arrow CR3 by the conveyed belt-like base material. The axis C81X of the pre-roll C810 is parallel to the coordinate axis Y. [

The strip-shaped base material C13 conveyed downstream of the upstream-side pre-roll C810 is then guided to proceed along the cylindrical surface of the rubbing roll C130. In this example, the axis C13X of the rubbing roll C 130 is parallel to the XY plane and inclined at an angle of 45 DEG with respect to the coordinate axis Y. The rubbing roll C130 is driven to rotate in the direction of the arrow CR2 about the axis C13X by a driving device (not shown), whereby the cylindrical surface of the rubbing roll C130 rotates one side of the strip- Rubbing, and a rubbing process is performed. The rubbing roll C 130 is brought into contact with the strip-shaped substrate at a surrounding angle exceeding 0 °, thereby rotating the conveying direction of the strip-shaped substrate. In addition, the angle formed by the conveying direction of the strip-shaped substrate and the rotation axis of the rubbing roll is non-orthogonal, and as a result, oblique rubbing by the rubbing roll similar to that of Embodiment C (i) is achieved.

The rubbed strip-like base material C14 conveyed downstream of the rubbing roll C 130 is continuously guided to advance along the conveying surface of the float conveying apparatus C 840, and the conveying direction thereof is rotated. The floating carrier C840 is the same device as the floating carrier C120 and C140 in the embodiment C (i).

The rubbed strip-shaped base material C15, which is conveyed downstream of the floating conveyor C840, is guided to continue along the cylindrical surface of the downstream-side pre-roll C850. By such an induction, the conveying direction of the strip-shaped substrate rotates at an angle exceeding 0 degrees. The pre-roll C850 is a grip roll provided so as to freely rotate around the axis C85X. Therefore, the pre-roll C850 is rotated in the direction of the arrow CR3 by the conveyed belt-like base material. The axis C85X of the pre-roll C850 is parallel to the coordinate axis Y. [

In this example, the floating carrier C840 is disposed only downstream of the rubbing roll C130. In this case as well, it is possible to adjust the sum of the rotation angle of rotation of the strip-shaped substrate in the conveying direction by the rubbing roll and the rotation angle of rotation in the conveying direction by the conveying apparatus to approximately 0 degrees. 34, the strip-shaped base material C13 carried into the rubbing roll C 130 is transported from the position C 131 to the position C 132 by the rubbing process by the rubbing roll C 130 And rotates at an angle C? W13. The strip-like base material C14 transported to the downstream of the rubbing roll C30 is continuously transported from the position C841 to the position C842 by a rotation process by the floating carrier C840, ). Since the rotation direction by the floating carrier C840 is opposite to the rotation direction by the rubbing roll C130, for example, C? W13 = C? W84 = 60 degrees. In addition, it is possible to adjust the conveying path of the strip-like base materials C13 and C15 in the horizontal direction and in a state of no skewing. As a result, even in this aspect, it becomes possible to carry out the oblique rubbing in which the degree of rubbing is uniform even when the enveloping angle of the rubbing roll is increased, in a state in which the carrying-out direction does not meander with respect to the carrying-in direction.

C3. Embodiment C (iii)]

In the embodiment C (i) and the embodiment C (ii), the sum of the rotation angle of the rotation of the belt-shaped substrate in the conveying direction by the rubbing roll and the rotation angle of the rotation in the conveying direction by the conveying apparatus is within a range of approximately 0 However, the present invention is not limited to this, and the sum of the rotation angles may be an angle larger than approximately 0 degrees. Such an example will be described below as Embodiment C (iii).

35 and 36 are a side view and a top view schematically showing still another example of the operation of the rubbing device of Embodiment C and the manufacturing method of Embodiment C using the rubbing device. The rubbing apparatus C1100 shown in Figs. 35 and 36 is configured such that the rotational angle of rotation in the carrying direction about the axis C114X by the lifting carrier C1140 is equal to or larger than the rotation angle of the lifting carrier C1140 in the embodiment C (ii) C840), which is different from that of the rubbing apparatus C800 in Embodiment C (ii). In this example, the pre-roll on the downstream side is omitted. Even in this aspect, even when the enveloping angle of the rubbing roll is increased, it is possible to achieve inclined rubbing in which the degree of rubbing is uniform.

However, in this example, the carrying-out direction is in a state in which the carrying-out direction meanders with respect to the carrying-in direction. However, by rotating the conveying device in the conveying direction, it is possible to reduce the ratio of meandering as compared with the case where there is no such rotation. Further, by providing a device for correcting an appropriate skew, such as another floating conveyance device, further downstream of the floating conveyor C1140, it is possible to carry out conveyance with reduced skew ratio.

D1. Embodiment D (i)]

Next, the present invention relating to Embodiment D will be described.

The manufacturing method of Embodiment D is a manufacturing method of a rubbed strip-shaped substrate, and includes a specific rubbing step of rubbing the strip-shaped substrate.

In the rubbing process, the surface of the strip-like base material having the front surface and back surface carried in from the upstream of the conveying path is rubbed against the rubbing roll rotating around the rotation axis, and is carried out downstream of the conveying path. The term &quot; front surface &quot; and &quot; rear surface &quot; of the strip-shaped substrate referred to in the present application are convenience names for distinguishing the rubbed surface of the strip- And the like are not particularly limited.

38 to 39 are a side view and a top view schematically showing an example of the operation of the rubbing device of Embodiment D and the manufacturing method of Embodiment D using the same. The present invention will be described with reference to the form shown in embodiment D (i). In Fig. 38, the rubbing apparatus D100 is observed in the coordinate axis Y direction, and in Fig. 39, the rubbing apparatus D100 is observed in the coordinate axis Z direction.

The rubbing device D100 includes a rubbing roll D130, a pre-roll D110 immediately upstream of the rubbing roll D130, and a pre-roll D150 immediately downstream of the rubbing roll D130. In the operation of the rubbing device D100, the strip-shaped substrates D11 to D16 are transported in the direction of the arrow DR1. For convenience of explanation, the right side and the left side of the observer in the case where the observer observes the band-shaped substrate conveyed in the substantially horizontal direction from the upstream side are referred to as the right side and the left side of the conveyance path, respectively. In the examples shown in Figs. 38 to 39, one end D11R in the width direction of the strip substrate is the right end, and the other end D11L in the width direction of the strip substrate is the left end.

The strip-shaped base material D11 carried into the rubbing apparatus D100 is guided to proceed along the main surface of the upstream-side pre-roll D110. By such an induction, the conveying direction of the strip-shaped substrate rotates at an angle exceeding 0 degrees. The pre-roll D110 is a conveying roll provided so as to be freely rotatable about a shaft D11X by a support (not shown) for supporting the shaft, and contacts the belt-like base material from the back side of the belt-like base material. Therefore, the pre-roll D110 rotates in the direction of the arrow DR3 with the conveyed belt-like base material.

In this example, the rotation axis of the rotation in the transport direction by the pre-roll D110 coincides with the rotation axis D11X of the pre-roll D110 itself, and the band between the start of contact with the pre- And is perpendicular to the conveying direction of the shape base material. In this example, the axis D11X of the pre-roll D110 is also parallel to the coordinate axis Y. [

The angle formed by the pre-roll D110 and the conveying direction may have an error within +/- 0.5 degrees from the orthogonal angle within a range not obstructing the conveyance. When the rotational axis of the rotation in the carrying direction is perpendicular to the carrying direction of the belt-like base material in contact with within the range of the tolerance, the pre-roll D110 can carry the belt-like base material in a gripped state.

The strip-like base material D13 conveyed downstream of the upstream-side pre-roll D110 is guided to continue along the main surface of the rubbing roll D130. The axis D13X of the rubbing roll D130 is parallel to the XY plane and inclined at an angle of 45 DEG with respect to the coordinate axis Y. [ The material of the rubbing roll used in the manufacturing method of the embodiment D and the rubbing device of the embodiment D is not particularly limited and may be a roll provided with a material suitable for rubbing such as a nonwoven fabric on the main surface.

Unlike the pre-roll D110, the rubbing roll D130 is driven to rotate in the direction of the arrow DR2 about the axis D13X by a driving device (not shown) One surface of the strip-shaped substrate is rubbed, and a rubbing process is performed.

In the production method of Embodiment D, the rubbing roll is brought into contact with the strip-shaped substrate at a surrounding angle exceeding 0 °, thereby rotating the strip-shaped substrate in the transport direction. In addition, the angle formed by the conveying direction of the strip-shaped substrate and the rotation axis of the rubbing roll is non-orthogonal. The conveying direction of the strip-shaped substrate referred to herein is the conveying direction of the strip-shaped substrate surrounding the rubbing roll. In the example of embodiment D (i), the direction in which the strip-shaped substrate surrounding the rubbing roll D130 is conveyed is non-orthogonal to the angle formed by the axis D13X of the rubbing roll D130. Thus, by making contact at a surrounding angle exceeding 0 DEG, it becomes possible to bring the strip-shaped base material into contact with the rubbing roll at a high pressure. In addition, by forming such a non-orthogonal angle, oblique rubbing by the rubbing roll is achieved.

The encircling angle is a central angle of the fan shape with respect to the main surface portion in contact with the strip-shaped base material in the rubbing roll. This center angle is an angle when observed in the axial direction of the rubbing roll.

The encircling angle is preferably 5 DEG or more, more preferably 10 DEG or more, and preferably 120 DEG or less, and more preferably 90 DEG or less. By setting the encircling angle within this range, it becomes possible to impart a high alignment regulating force to the film without giving an excessive load. The angle formed by the conveying direction of the strip-shaped substrate and the rotation axis of the rubbing roll is called &quot; oscillation angle &quot;. The vibration angle is an angle range of more than 0 DEG and less than 89.5 DEG, preferably 10 DEG or more, more preferably 35 DEG or more, particularly preferably 40 DEG or more, and more preferably 80 DEG or less, 55 DEG or less, particularly preferably 50 DEG or less. In the oblique rubbing, it is often required to perform rubbing so as to have the alignment regulating force at 45 degrees with respect to the longitudinal direction of the strip-shaped base material. By setting the vibration angle to the above range, Can be easily achieved.

As the rubbing roll has a vibration angle, one of the left and right sides of the rubbing roll is inclined toward the upstream side and the other is inclined toward the downstream side. 38 to 39, the left side of the rubbing roll is inclined to the upstream side, and the right side of the rubbing roll is inclined to the downstream side.

In the production method of Embodiment D, the rotation speed of the rubbing roll can be arbitrarily adjusted so as to obtain a desired rubbing amount. The amount of rubbing can be represented by the moving distance relative to the strip-shaped base material on the main surface of the rubbing roll from the start of the contact between the strip-shaped substrate and the rubbing roll to the end of the contact in the conveying path. Specifically, the rotation speed of the rubbing roll can be adjusted so that the product of the peripheral speed of the main surface of the rubbing roll and the time when the rubbing roll is in contact with the strip-shaped substrate is within a desired range. More specifically, the peripheral speed of the main surface of the rubbing roll is determined from the rubbing roll diameter d (mm) and the rotation speed t (rpm) by? Dt / 60 (mm / sec) is the line speed v (mm / minute), surrounding from each θw (°) and the oscillation angle φ (°) (πdθw / 360 ) so obtained as ÷ (vsinφ / 60) (second), and their product of (π ² d ² ? wt) / (360vsin?) (mm). The preferred range of the product is 500 mm to 100000 mm. Therefore, the rotation speed of the rubbing roll can be adjusted over the entire width direction of the strip-shaped substrate such that the product is within the desired range.

The rubbed band base material D14 conveyed downstream of the rubbing roll D130 is guided to continue along the main surface of the downstream side pre-roll D150. By such an induction, the conveying direction of the strip-shaped substrate rotates at an angle exceeding 0 degrees. The pre-roll D150 is a transport roll provided in a state in which it is freely rotatable about a shaft D15X by a support (not shown) for supporting the shaft, and contacts the belt-like base material from the back side of the belt-like base material. Therefore, the free roll D150 rotates in the direction of the arrow DR3 with the conveyed belt-like base material.

In this example, the pre-roll D150 is a grip roll similarly to the pre-roll D110, and the rotational axis of the rotation in the carrying direction by the pre-roll D150 coincides with the rotational axis D15X of the pre- And is orthogonal to the conveying direction of the strip-shaped substrate between the start of contact with the pre-roll (D150) and the end of contact. In this example, the axis D11X of the pre-roll D110 and the axis D15X of the pre-roll D150 are arranged in parallel.

The strip-like base material D16 conveyed downstream of the downstream-side pre-roll D150 is a rubbed strip-like base material and may optionally be provided in the preservation or use process. For example, the strip-shaped base material D16 can be conveyed as it is to a line for carrying out the coating process of the liquid crystal composition as it is, or can be stored as a wound roll state by a suitable winding device.

By providing an appropriate device such as a nip roll, a winding device, etc. on the upstream side, the downstream side, or both of the rubbing device D100, the belt-shaped substrate can be conveyed at a proper line speed and tension. The line speed and tension can be arbitrarily set to appropriate values in accordance with the strip-shaped substrate to be used and the rubbing conditions desired. For example, the line speed can be preferably 1 to 50 m / min. The tensile strength can be preferably 30 to 500 N / m.

D1. 1. Crown rolls]

In the embodiment D (i), the pre-roll D110, the rubbing roll D130 and the pre-roll D150 are formed such that the diameter of the center portion is thick and the diameter of the end portion is small Shape. A roll having such a shape is called a crown-shaped roll or simply a crown roll.

The shape of the crown roll will be described with reference to Fig. Fig. 42 is a cross-sectional view for explaining the shape of a crown roll, taking the pre-roll D110 shown in Figs. 38 to 39 as an example. In Fig. 42, the pre-roll D110 is shown as a section taken along the plane passing through the axis D11X. In the pre-roll width directions corresponding to the positions at which the end portions of the pre-roll D110 (the end portions D11R and D11L of the strip-shaped base material on the main surface of the pre-roll are in contact with each other), the diameters of the thickness DR11R and DR11L And has a larger diameter indicated by an arrow DR11C at one central portion (a position where the center portion of the strip-shaped substrate contacts).

The shape of the main surface in the cross section of the crown roll cut at the plane passing through the shaft of the crown roll has a rounded curved shape in the example shown in Fig. However, the major surface of the crown roll is not limited to this shape, and may be a bent line formed by connecting two or more straight lines, or a combination of a straight line and a curved line. In the example shown in Fig. 42, the diameters of both end portions indicated by the arrows DR11R and DR11L are the same symmetrical shape, but the crown roll is not limited to this and may be asymmetrical with respect to the diameters of the left and right end portions .

In contrast to a crown roll, a roll having a narrow diameter at its center and a thicker end diameter is called an inverted crown roll or simply an inverted crown roll. The shape of the reverse crown roll will be described with reference to Fig. 43 is a cross-sectional view for explaining the shape of an inverse crown roll using the pre-roll D310 (described later) shown in Figs. 40 to 41 as an example. 43, the pre-roll D310 has arrows DR31R and DR31L at the end portions (positions in the pre-roll width direction corresponding to the positions where the end portions D11R and D11L of the strip- And has a smaller diameter indicated by an arrow DR31C at one central portion (a position where the center portion of the strip-like base material contacts).

The shape of the main surface in the cross section of the reverse crown roll cut at the plane passing through the axis of the reverse crown roll has a rounded curved shape in the example shown in Fig. However, the shape of the major surface in the cross section of the inverse crown roll is not limited to this, and may be a form of a line formed by connecting two or more straight lines, or a combination of straight lines and curved lines. In the example shown in Fig. 43, the diameters of both end portions indicated by the arrows DR31R and DR31L are the same symmetrical shape, but the reverse crown roll is not limited to this, and even if the diameters of the right and left end portions are different, do.

Cylindrical rolls other than crown rolls and reverse crown rolls are sometimes referred to simply as &quot; straight rolls &quot; in the present application.

D1. 2. Shape of strip-shaped substrate on conveying path]

In the production method of Embodiment D, the shape of the strip-like base material on the transport path satisfies at least one of the following requirements (i) to (iii). That is, in the production method of Embodiment D, the strip-shaped substrate is transported so that the shape of the strip-shaped substrate on the transport path satisfies at least one of the following requirements (i) to (iii).

(i) The belt-like base material has a convex shape on the back side of the belt-like base material at a position where the belt-like base material is in contact with the rubbing roll.

(ii) the convex shape on the surface side at least in a region between the rubbing roll and the upstream-side grip roll which grips the strip-shaped base material on the upstream side thereof.

(iii) the convex shape on the surface side at least in a region between the rubbing roll and the downstream-side grip roll for gripping the strip-shaped base material on the downstream side thereof.

In the present application, the fact that the strip-shaped substrate has a "convex shape on the back side" means that the central portion in the width direction of the strip-shaped substrate is protruded toward the back side of the strip-shaped substrate Shape. On the contrary, the fact that the strip-like base material has the shape of "convex on the surface side" means that the center of the strip-like base material in the width direction is protruded toward the surface side of the strip- .

In the requirement (i), whether or not "the convex shape on the back side of the strip-shaped substrate at the position where the strip-shaped substrate comes in contact with the rubbing roll" passes through the axis of the rubbing roll, Shaped substrate is determined based on whether or not the central portion of the cross-section taken along the direction perpendicular to the strip-shaped base surface at the direction center point protrudes to the back side of the strip-shaped base material. 39, the position of the plane passing through the axis D13X of the rubbing roll D130 and perpendicular to the band-shaped base surface at the widthwise center point of the band-shaped substrate is represented by the line DL21 In this case, the widthwise center of the strip-like base material is DQ21. On the position indicated by the line DL21, the center of the strip-like base material is protruded toward the back side of the strip-like base material as compared with the end portion due to the fact that the rubbing roll D130 is a crown roll. Therefore, Embodiment D (i) satisfies the requirement (i).

In the requirement (ii), when there are a plurality of grip rolls on the upstream side of the rubbing roll, the &quot; upstream grip rolls &quot; are the grip rolls most close to the rubbing rolls.

In the requirement (ii), in the region of at least a part between the rubbing roll and the upstream-side grip roll for gripping the strip-like base material on the upstream side thereof, the strip-like base material has a portion having a convex shape on the front surface side , It is determined that the requirement (ii) is satisfied. For example, in the example shown in Fig. 38, a part of the region DZ11 (D1011) near the pre-roll D110 between the rubbing roll D130 and the pre-roll D110 due to the crown roll being the pre- ), The strip-shaped substrate has a convex shape on the surface side. Therefore, the example shown in Fig. 38 satisfies the requirement (ii).

In the requirement (iii), when there are a plurality of grip rolls on the downstream side of the rubbing roll, the &quot; downstream grip roll &quot; is a grip roll most close to the rubbing roll.

Regarding the requirement (iii), in the case where, in at least a part of the area between the rubbing roll and the downstream side grip roll for gripping the belt-like base material on the downstream side thereof, the band-like base material has a convex portion on the surface side , And satisfies the requirement (iii). For example, in the example shown in FIG. 38, a part of the region DZ15 (D50) near the pre-roll D150 is located between the rubbing roll D130 and the pre- ), The strip-shaped substrate has a convex shape on the surface side. Therefore, the example shown in Fig. 38 satisfies the requirement (iii).

When at least one of the requirements (i) to (iii) is satisfied, the pass line at the center in the width direction can be made longer in the oblique rubbing. Generally, in the oblique rubbing, the pass line at the center in the width direction tends to be relatively short, which makes the pressure of contact of the strip-shaped base material with respect to the rubbing roll uneven, and the degree of rubbing becomes uneven Such unevenness can be reduced by lengthening the pass line in the central portion in the width direction as described above. As a result, the pressure of the rubbing roll contacting the strip-shaped substrate can be made uniform, and the wrinkles of the strip-shaped substrate on the rubbing roll can be reduced, and even rubbing can be achieved.

This effect of Embodiment D is further explained by contrast with the prior art. 44 to 45 are a side view and a top view schematically showing an example of the operation of the rubbing apparatus of the prior art and the conventional manufacturing method using the rubbing apparatus. 44 to 45, the rubbing device D700 includes a cylindrical rubbing roll D730 disposed at an oscillating angle of 45 degrees, a cylindrical pre-roll D710 (grip roll) immediately upstream of the rubbing roll D730, A cylindrical pre-roll D750 (grip roll). In the operation of the rubbing device D700, the strip-shaped substrates D11 to D16 are transported in the direction of the arrow DR1. The axis D71X of the pre-roll D710 and the axis D75X of the pre-roll D750 are arranged in parallel.

44 to 45, twisting occurs in the conveying path of the strip-like base material in the vicinity of the rubbing roll D730, and as a result, in the position where the contact between the strip-shaped base material carried in the rubbing roll and the rubbing roll is started The direction in which the strip-like base material is fed is not the same across the widthwise direction of the strip-like base material, and the direction in which the strip-shaped base material is conveyed out from the rubbing roll ends in contact with the rubbing roll, They are not the same across the width direction of the substrate.

In the examples shown in Figs. 44 to 45 due to such twisting, the length of the conveying path of the strip-shaped substrate becomes uneven across the width direction of the strip-shaped substrate. More specifically, the pass lines DP70-1 to DP70-7 of the strip-shaped substrate from the time when contact with the pre-roll D710 shown in Fig. 45 is completed until the contact with the pre-roll D750 is started The length becomes uneven. More specifically, the conveying paths DP70-1 and DP70-7 at the ends are the longest, the conveying path DP70-4 at the center is the shortest, and the intermediate conveying path is shorter than the conveying path at the end, And is longer than the conveying path of the central portion. When such unevenness occurs in the length of the conveying path, when the conveyed band-like substrate contacts the rubbing roll D730, the tension at the center portion becomes weaker than the tension at the end portion. Shaped substrate having a small degree of elongation or shrinkage, the strip-shaped base material in the central portion remains in a state of being unevenly loosened at the central portion. As a result, the contact pressure of the strip-shaped base material with respect to the rubbing roll becomes uneven, and the degree of rubbing becomes uneven.

On the other hand, in the manufacturing method according to Embodiment D, by satisfying any one of the requirements (i) to (iii), it is possible to elongate the pass line at the center in the width direction in the oblique rubbing. As a result, such unevenness can be reduced.

In the examples of Figs. 44 to 45, when the interval between the pre-roll D710 and the pre-roll D750 is sufficiently long, the lengths of the transport paths are relatively uneven. However, in that case, there is a problem that the path through which the strip-shaped substrate is transported in the state where it is not supported becomes long, a problem arises due to flapping of the film, or a space for installing a manufacturing facility becomes large. In Embodiment D, the length of the transport path from the upstream grip roll to the downstream grip roll is preferably 5 times or less the film width, more preferably 3 times or less the film width. The lower limit of the length of the transport path is not particularly limited, but may be, for example, at least twice the film width.

D1. 3. Remaining amount]

The degree of nonuniformity of the above-described pass line is determined by defining the pass line of the strip-shaped substrate conveyed over the rubbing roll as follows and measuring or calculating the length of the pass line at various positions in the width direction of the strip- , And can be quantified by obtaining the remaining amount of the pass line from the measurement result of this length or the calculation result. The method for obtaining the specific residual amount is as follows.

First, a line on the main surface of the roll, which is the start point of the pass line, is set on the main surface of the upstream side grip roll defined in the requirement (ii). The line at the start of this pass line is set with reference to a position where the strip-shaped substrate to be conveyed falls from the upstream side grip roll. The timing at which the strip substrate is dropped from the upstream grip roll may be simultaneous throughout the width direction of the strip substrate and may not be simultaneous across the width direction of the strip substrate due to the twist of the transport path There is also. Therefore, a line at the point where the strip-shaped base material most early on the main surface of the upstream-side grip roll falls from the upstream-side grip roll and the plane including the axis of the upstream-side grip roll and the intersection of the main surface of the upstream- Of the total. When the upstream side grip roll is a cylindrical straight roll, the line at the starting point of the pass line is a straight line on the main surface of the roll, parallel to the axis of the roll, It becomes a line passing through the point. On the other hand, when the upstream-side grip roll is a crown roll or an inverse crown roll, the line at the start of the pass line becomes a curve on the main surface of the roll. For example, as shown in Fig. 46, when the position where the strip-like base material D13 falls from the pre-roll D110 as the crown-shaped upstream grip roll is a position indicated by a slope curve line DL11, DL11), the point at which the strip-like base material D13 drops from the pre-roll D110 at the earliest point is the point indicated by the point DQ10-1. The plane including the point DQ10-1 and the line DL12 connecting the point on the axis D11X and the point DQ10-1 can be defined. A line at a position where the plane intersects the main surface of the pre-roll D110 is a curve indicated by a line DL13, and this straight line DL13 is defined as a line at the start of the pass line.

Subsequently, on the main surface of the downstream side grip roll defined in the requirement (iii), a line on the main surface of the roll, which is the end point of the pass line, is set. The line of the end point of the pass line is set on the basis of the position where the strip-shaped substrate to be conveyed is in contact with the downstream side grip roll. The timing at which the strip-like base material contacts the downstream-side grip roll may be simultaneous throughout the entire widthwise direction of the strip-like base material, and may not be the same at all over the widthwise direction of the strip- There is also. Therefore, a line at a position where the strip-shaped base material contacts the downstream-side grip roll at the latest on the main surface of the downstream-side grip roll and the plane including the axis of the downstream-side grip roll and the main surface of the downstream- Of the total. When the downstream side grip roll is a cylindrical straight roll, the line of the end point of the pass line is a straight line on the main surface of the roll, parallel to the axis of the roll, It becomes a line passing through the point. On the other hand, when the downstream side grip roll is a crown roll or an inverse crown roll, the line at the end point of the pass line becomes a curve on the main surface of the roll.

Subsequently, pass lines are defined at various positions in the width direction of the strip-shaped substrate. The point of view of the pass line is defined at two points at both ends on the line of the start point of the prescribed pass line and at five points or more at equal intervals on the inner side of both ends. Therefore, the number (n) of pass lines becomes 7 or more. For example, in the example shown in Fig. 46, the points DQ10-1 and DQ10-7 at the both ends of the line DL13 at the start of the pass line and the points DQ10-2 to DQ10-6 at the inside thereof, The time point of the pass line is defined. The end point of the pass line is defined by two points at both ends of the straight line at the end point of the specified pass line and at the same number of points at the same time Of the Act. A line connecting the start point and the end point of a corresponding pass line on the conveyance path is defined as a pass line. The upper limit of the number (n) of pass lines is not particularly limited, and may be a large number indefinitely, but may be 100 or less for convenience of operation. Or the number of pass lines may be a number in which the interval of the pass lines in the film width direction is 10 mm to 500 mm.

Subsequently, the lengths of the respective pass lines are measured. The measurement of the pass line can be carried out by measuring the length of the yarn by placing the yarn across the end point at the start point of the pass line in the state of taking out the strip-shaped base material. In this case, the thread strikes along the position where the strip-shaped substrate is transported so as not to be loosened. For example, the thread strikes the rubbing roll even at a position where the strip-shaped base is lifted from the rubbing roll by wrinkles or the like. Alternatively, instead of actual measurement, such a pass line may be obtained by calculation based on the information of the position of the roll.

The remaining amount epsilon k (k = 1, 2, ... n) and the maximum value epsilon max of the remaining pass through the obtained lengths P1, P2, (3) and (4) from the short pass line length (Pmin) and the longest pass line length (Pmax).

? (%) = (Pk-Pmin) / Pmin x 100 (%) (3)

? max (%) = (Pmax-Pmin) / Pmin x 100 (%) (4)

In Embodiment D, by adjusting the degree of protrusion of the convex shape of the belt-like base material in the requirements (i) to (iii) satisfying any one of the requirements (i) to (iii) It is possible to carry the strip-shaped substrate. For example, the maximum residual amount? Max of the strip-shaped base material can be preferably 0% to 0.1%, more preferably 0% to 0.05%.

The width w of the strip-shaped substrate is preferably 0.2 m or more, more preferably 0.4 m or more, and preferably 4 m or less, and more preferably 3 m or less.

[D2. Embodiment D (ii)]

In the embodiment D (i), the pre roll D110, the rubbing roll D130 and the pre-roll D150 are all crown rolls, but the present invention is not limited to this, and some of them may be rolls of different shapes . One such example will be described below as Embodiment D (ii).

40 to 41 are a side view and a top view schematically showing another example of the operation of the rubbing device of Embodiment D and the manufacturing method of Embodiment D using the rubbing device. The embodiment shown here is described as embodiment D (ii). The rubbing apparatus D300 shown in Figs. 40 to 41 is different from the rubbing apparatus D100 of the embodiment D (i) in that the upstream roll D310 and the downstream roll D350 are inverse crown rolls. . The rubbing device D300 also differs from the rubbing device D100 in that the pre rolls D310 and D350 are in contact with the strip-shaped base material from the surface side of the strip-shaped base material and rotate in the direction of the arrow DR4. The vibration angle, envelope angle, and direction of the shaft D13X of the pre-roll D130 are the same as those in the rubbing apparatus D100.

In the rubbing device D300, an inverted crown roll is used as a pre-roll as a pre-roll, and the surface in contact with the strip-shaped base material is made the opposite side to the rubbing device D100 ) Satisfy the requirements (ii) and (iii). As a result, the pass line at the center in the width direction can be elongated, and uniform rubbing can be achieved.

Since the reverse crown roll has a function of widening the belt-like base material in the width direction, when the reverse crown roll is employed as either the upstream side grip roll or the downstream side grip roll, or when the crown roll is employed The occurrence of wrinkles in the center of the film width can be reduced. Therefore, an inverse crown roll is particularly useful when it is required to reduce the occurrence of wrinkles in the film width center portion. On the other hand, when such an inverse crown roll is employed as either or both of the upstream side grip roll and the downstream side grip roll, the meandering of the strip-like base material on the conveying path is undesirably There is a tendency that the tendency to occur is increased. Therefore, according to the conditions required to be adjusted, these can be arbitrarily selected and used to achieve good rubbing.

[D3. Other Embodiments]

The manufacturing method of the present invention and the rubbing device of the present invention are not limited to the above-mentioned Embodiment D (i) and Embodiment D (ii), but can be used in another aspect.

[D3. 1. Expander roll]

For example, in the embodiment D (i), a crown roll is used as the upstream-side grip roll (pre-roll D110) and this is brought into contact with the belt-like base material from the back side of the belt- Respectively. However, in order to satisfy the requirement (ii), the conveying device which makes contact with the belt-like base material from the back side of the belt-shaped substrate is not limited to the crown roll, but various other conveying devices can be used. Examples of the upstream-side grip roll having a convex shape with respect to the strip-shaped base material include an expander roll other than the crown roll. The requirement (ii) can also be satisfied by adopting this as the upstream-side grip roll. The expander roll is a roll capable of bending the shaft into an arc shape and rotating it while maintaining the state. Like substrate in a state in which the shaft of the cylindrical expander roll is bent and brought into contact with the belt-like base material from the back side of the belt-like base material in a convex shape with respect to the belt-like base material, Can be achieved.

Similarly, in order to satisfy the requirement (iii), the conveying device for bringing the belt-like base material into contact with the belt-like base material from the back side is not limited to the crown roll, and various other conveying devices can be used. As an example of the downstream side grip roll having a convex shape with respect to the strip-shaped base material, an example of the crown roll may also be an expander roll. By adopting this as the downstream side grip roll, the requirement (iii) can be satisfied. By bringing the shaft of the cylindrical expander roll into contact with the belt-like base material from the back side of the belt-like base material in a convex shape with respect to the belt-like base material and using this as the downstream side grip roll, Can be achieved.

In the embodiment D (ii), an inverse crown roll is used as the upstream-side grip roll (pre-roll D310), and this is brought into contact with the belt-like base material from the front side of the belt-like base material, thereby satisfying the requirement (ii) . However, in order to satisfy the requirement (ii), the conveying device which makes contact with the belt-like base material from the front side of the belt-like base material is not limited to the reverse crown roll, but various other conveying devices can be used. As an example of the crown roll of the upstream side grip roll having a concave shape with respect to the strip-shaped base material, there is an expander roll. By employing this as the upstream-side grip roll, the requirement (ii) can be satisfied. Like substrate in a state in which the axis of the cylindrical expander roll is bent and the concave shape is taken on the belt-like base material, the belt-shaped base material is used as the upstream-side grip roll, Can be achieved.

Similarly, in order to satisfy the requirement (iii), the conveying device for bringing the belt-like base material into contact with the belt-like base material from the front side of the belt-like base material is not limited to the reverse crown roll, and various other conveying devices can be used. As an example other than the crown roll of the downstream side grip roll having a concave shape with respect to the strip-shaped base material, an expander roll can also be mentioned. By adopting this as the downstream side grip roll, the requirement (iii) can be satisfied. By bringing the shaft of the cylindrical expander roll into contact with the strip substrate from the front side of the strip substrate in a concave shape with respect to the strip substrate and using this as the downstream grip roll, Can be achieved.

[D3. 2. Float transfer device]

Another example of the transporting device for regulating the shape of the strip-like base material to satisfy the requirement (ii) and / or the requirement (iii) is a float transporting device. The flotation conveying apparatus has a conveying surface having the same shape as the main surface or a part of the conveying roll, and has a fine number of air ejecting holes on the conveying surface. By ejecting air from the air ejecting holes, Shaped substrate can be guided along the conveying surface in a non-contact state.

For example, it is possible to adopt a configuration in which a flotation conveying device having a conveying surface having the same convex shape as the crown roll is employed and a convex shape is provided between the upstream side grip roll and the rubbing roll so as to face the back side of the belt- , It is possible to achieve the conveyance satisfying the requirement (ii). For example, it is also possible to adopt a configuration in which a flotation conveying device having a conveying surface having the same convex shape as the crown roll is employed and a convex shape is provided between the cylindrical downstream side grip roll and the rubbing roll so as to face the back side of the belt- , It is possible to achieve the conveyance satisfying the requirement (iii).

For example, it is also possible to employ a flotation conveying apparatus having a concave conveying surface having the same concave shape as the reversing crown roll, which is inserted between the cylindrical upstream grip roll and the rubbing roll, It is possible to achieve the conveyance satisfying the requirement (ii). Further, for example, it is possible to adopt a configuration in which a flotation conveying apparatus having a concave conveying surface having the same concave shape as the reverse crown roll is employed and a concave shape is formed between the cylindrical downstream side grip roll and the rubbing roll so as to face the front side of the belt- It is possible to achieve the conveyance satisfying the requirement (iii).

[D3. 3. Combination of rolls]

In embodiment D (i), both the upstream grip roll and the downstream grip roll are crown rolls. In embodiment D (ii), both the upstream grip roll and the downstream grip roll are inverse crown rolls, The present invention is not limited to this, and the upstream grip roll and the downstream grip roll may be combinations of different rolls. As examples of combinations of rolls,

(A) a combination in which both the upstream-side grip roll and the downstream-side grip roll are crown rolls,

(B) a combination in which both the upstream-side grip roll and the downstream-side grip roll are reverse crown rolls,

(C) a combination in which one of the upstream-side grip roll and the downstream-side grip roll is a crown roll and the other is an inverse crown roll,

(D) a combination in which one of the upstream-side grip roll and the downstream-side grip roll is a crown roll and the other is a straight roll,

(E) a combination in which one of the upstream-side grip roll and the downstream-side grip roll is an inverse crown roll and the other is a straight roll,

(F) In any one of the above-mentioned items, instead of the crown roll, a combination in which an expander roll provided so that the convex shape faces the band-

(G) In any one of the above-mentioned items, a combination in which an expander roll provided so as to face the strip-like base body is used in place of the reverse crown roll, and

(H) A combination in which both the upstream-side grip roll and the downstream-side grip roll are straight rolls

. In the above (A) to (G), rolls which can be provided so as to have a convex shape with respect to a belt-like base material such as a crown roll are provided so as to come into contact with the belt- ) Or the requirement (iii). In the above-mentioned (A) to (G), rolls which can be provided to have a concave shape with respect to the strip-like base material such as an inverse crown roll are provided so as to come into contact with the strip- It is possible to carry out the transportation satisfying the requirement (ii) or the requirement (iii).

In the embodiment D (i) and the embodiment D (ii), the rubbing roll is a crown roll, but the present invention is not limited to this, and the rubbing roll may be a straight roll. In this case, the combination of the upstream-side grip roll and the downstream-side grip roll is preferably any one of (A) to (G).

The embodiments D (i) and D (ii) satisfy all of the requirements (i) to (iii), but the present invention is not limited thereto, and two or one of the requirements (i) May be satisfied. For example, depending on the conditions such as the vibration angle and the enclosing angle of the rubbing roll, the residual amount generated by the oblique rubbing may be small. In this case, only two or one of the requirements (i) to (iii) Satisfactory slope rubbing can be achieved even if it is satisfied.

In the case where one of the upstream side grip roll and the downstream side grip roll is a crown roll or an inverted crown roll and the other is a straight roll as in the above (D) and (E), the crown roll or the inverse crown roll In the case of a symmetrical roll, the pass line lengths at the right and left ends may be different. In this case, the length of the pass line over the entire width of the crown roll or the reverse crown roll can be brought close to a uniform state by using a roll whose asymmetrical right and left are used.

[Material of strip-shaped substrate]

The material of the strip-shaped substrate used in the production method of the present invention including Embodiments A to D is not particularly limited, and various resins capable of imparting an alignment restraining force to the surface thereof by rubbing can be used. Examples of the resin include resins containing various polymers. Examples of the polymer include alicyclic structure-containing polymers, cellulose esters, polyvinyl alcohol, polyimide, UV-permeable acryl, polycarbonate, polysulfone, polyether sulfone, epoxy polymer, polystyrene, polyethylene terephthalate, polyethylene naphthalate, . Of these, alicyclic structure-containing polymers and cellulose esters are preferable, and alicyclic structure-containing polymers are more preferable from the viewpoint of transparency, low hygroscopicity, dimensional stability, light weight and the like.

An orientation film may be formed on the surface to which the alignment restraining force is imparted by rubbing of the strip-shaped substrate used in the production method of the present invention, if necessary. The alignment regulating force can be easily given by the alignment film. The alignment film may be formed of, for example, cellulose, a silane coupling agent, a polyimide, a polyamide, a polyvinyl alcohol, an epoxy acrylate, a silanol oligomer, a polyacrylonitrile, a phenol resin, a polyoxazole, a cyclized polyisoprene .

[Use of Product]

The use of the rubbed strip-shaped substrate obtained by the production method of the present invention is not particularly limited, but the alignment regulating force of the surface can be used to produce a resin film having an orientation. Specifically, a layer of a cured liquid crystal composition can be formed by coating a liquid crystal composition containing a polymerizable liquid crystal compound on a belt-like substrate and curing the liquid crystal compound in an oriented state. The layer of the cured liquid crystal composition can be used as an optical member such as a retardation plate (1/4? Plate, 1/2? Plate or the like).

Example

Hereinafter, the present invention will be described in detail with reference to examples. However, the present invention is not limited to the following embodiments.

In the following description, &quot;% &quot; and &quot; part &quot; for quantities are by weight unless otherwise specified. In addition, the following operations were carried out at normal temperature and atmospheric pressure, unless otherwise noted.

[Evaluation method: Examples A1 to A3 and Comparative Examples A1 to A3]

A1. Wrinkles of strip-shaped substrate during rubbing processing]

In order to evaluate whether or not rubbing treatment without twist was performed, the presence or absence of wrinkles of the strip-shaped substrate during the rubbing treatment was observed. The state of the band-like substrate conveyed in the vicinity of the rubbing roll during the rubbing treatment was observed to evaluate A as a wrinkle was not observed, B as a wrinkle was slightly observed and C as a wrinkle was clearly observed.

A2. Alignment state]

In order to evaluate the state of the alignment restraining force of the rubbed band-shaped substrate, a liquid crystal composition containing a polymerizable liquid crystal compound was coated on the band-shaped substrate and cured to form a layer of the cured liquid crystal composition, and the alignment state was observed.

The liquid crystal composition was prepared by dissolving 21.25 parts of the reverse wavelength dispersion polymerizable liquid crystal compound represented by the following formula (E1), 0.11 part of a surfactant (trade name: "SURFON S420", manufactured by AGC Seiyaku Chemical Co., Ltd.) , Manufactured by BASF), and 78.00 parts of a solvent (cyclopentanone, manufactured by Nippon Zeon Co., Ltd.) were mixed and prepared.

[Chemical Formula 1]

The liquid crystal composition was applied to the rubbed surface of the rubbed band-shaped substrate using a die cutter to form a liquid crystal composition layer. The layer of the liquid crystal composition was subjected to orientation treatment at 110 占 폚 for 2.5 minutes and irradiated with ultraviolet rays of 100 mJ / cm2 or more in a nitrogen atmosphere to obtain a liquid crystal resin film layer having a dry film thickness of 2 占 퐉. For this layer, the alignment state was observed under Cross-Nicol using a polarization microscope, and it was evaluated whether or not a uniform orientation was obtained on the entire surface without alignment defects.

[Example A1]

(A1-1. Band-shaped substrate)

Pellets of a thermoplastic norbornene resin (trade name &quot; ZEONOR1420R &quot;, manufactured by Nippon Zeon Co., Ltd.) were melt-extruded to obtain a strip-shaped substrate having a width of 400 mm and a thickness of 50 탆.

(A1-2. Rubbing treatment)

Using the rubbing apparatus A100 schematically shown in Figs. 1 to 5, the strip-shaped substrate obtained in (A1-1) was rubbed to produce a rubbed strip-shaped substrate.

The diameter of the two cylindrical pre-rolls (grip rolls) was all 80 mm. The diameter of the cylindrical rubbing roll A 130 was 120 mm. The axis A11X of the free roll A10X and the axis A13X of the rubbing roll A 130 are provided in the horizontal direction and the conveying of the strip-like base material A 13 from the pre- roll A 110 to the rubbing roll A 130 And their positions were adjusted so that the paths were also in the horizontal direction. The vibration angle of the rubbing roll A 130 was 45 °, and the enveloping angle was 60 °. The transport path from the strip-like base material to the pre-roll A 150 to the contact with the pre-roll A 150 is set to about 1000 mm, the position and angle of the pre-roll are adjusted from this state, Like substrate A13 carried out from the rubbing roll A 130 and the carrying-out direction of the strip-shaped base material A 14 carried out from the rubbing roll A 130 are the same in the transverse direction of the strip-shaped substrate Or an angle formed by the direction of the reference and another carrying-in or-out direction with respect to the carrying-out direction is within 0.5 °) so that the maximum value? Max of the remaining amount of the band-like substrate is 0.05% or less. The line speed at which the strip-like base materials A11 to A16 are conveyed was 4 m / min, and the tension was 150 N / m. The rubbing roll A 130 was rotated in the reverse direction (rotation in the direction indicated by the arrow AR 2 in the figure) at 1000 rpm.

The wrinkles of the strip-shaped substrate in the rubbing process were evaluated and evaluated as "A". Further, the obtained rubbed band-like substrate was evaluated for the alignment state, and it was evaluated that the alignment was uniform over the entire surface and was good.

[Example A2]

Rubbing treatment was carried out in the same manner as in Example A1 except that the arrangement of the pre-rolls was changed, thereby changing the rubbing apparatus to a rubbing apparatus A600 schematically shown in Figs. 6 and 7. Fig. The rubbing apparatus A600 rotates the rubbing apparatus A100 shown in Figs. 1 to 5 around the axis A13X of the rubbing roll A 130 to change the positions of the pre-rolls A110 and A150, (A610 and A650), which is different from the rubbing apparatus A100, and is otherwise the same.

The wrinkles of the strip-shaped substrate in the rubbing process were evaluated and evaluated as "A". The obtained rubbed band-shaped substrate was evaluated for the alignment state, and it was evaluated that the alignment was uniform over the entire surface and was good.

[Example A3]

Using the rubbing apparatus A800 schematically shown in Figs. 8 to 12, the strip-shaped substrate obtained in (A1-1) of Example A1 was rubbed to produce a rubbed strip-shaped substrate.

As the two pre-rolls and rubbing rolls A130, the same ones as used in Example A1 were used. The axes A81X and A85X of the pre-rolls A810 and A850 and the axle A13X of the rubbing roll A 130 are installed in the horizontal direction. The axes A81X and A85X of the pre-rolls A810 and A850 were made parallel to each other. The flotation conveying apparatuses A820 and A840 each having a conveying surface A821S along a cylindrical shape with a radius of 160 mm were used to set the oscillation angle of the flotation conveying apparatus to approximately 50 degrees. The position of the floating conveyance units A820 and A840 and the angle of the shaft are arbitrarily adjusted so that the vibration angle of the rubbing roll A 130 is 45 °, The encapsulation direction of the strip-shaped base material A13 carried in the rubbing roll A 130 and the outgoing direction of the strip-shaped base material A14 carried out of the rubbing roll A 130 are set to be equal to the width of the strip- Direction so that the maximum value? Max of the remaining amount of the strip-shaped substrate is 0.05% or less. Other conditions were the same as in Example A1.

The wrinkles of the strip-shaped substrate in the rubbing process were evaluated and evaluated as "A". Further, the obtained rubbed band-like substrate was evaluated for the alignment state, and it was evaluated that the alignment was uniform over the entire surface and was good.

[Comparative Example A1]

Using the rubbing apparatus A1300 schematically shown in Figs. 13 to 15, the strip-shaped substrate obtained in (A1-1) of Example A1 was rubbed to produce a rubbed strip-shaped substrate.

As the two pre-rolls and rubbing rolls A1330, the same ones as used in Example A1 were used. The axes A131X and A135X of the pre rolls A1310 and A1350 and the axis A133X of the rubbing roll A1330 are horizontally installed. The axes A131X and A135X of the pre-rolls A1310 and A1350 are made parallel to each other. The vibration angle of the rubbing roll A 1330 was 45 °, and the position of the axis A 133X in the Z direction was adjusted so that the envelope angle was 30 °. As a result, the carrying direction of the strip-shaped base material A13 carried in the rubbing roll A 1330 and the carrying-out direction of the strip-shaped base material A14 carried out from the rubbing roll A 1330 are not the same in the width direction of the strip- , And the maximum value? Max of the residual amount of the strip-shaped substrate was 0.34%. Other conditions were the same as in Example A1.

The wrinkles of the band-shaped substrate in the rubbing treatment were evaluated and evaluated as &quot; B &quot;. Further, the obtained rubbed band-shaped substrate was evaluated for its alignment state, and found that the portion with poor orientation was present as a speckle.

[Comparative Example A2]

The rubbing treatment was carried out in the same manner as in Comparative Example A1 except that the position of the axis A133X of the rubbing roll A1330 in the Z direction was adjusted to 60 degrees. By changing the position of the rubbing roll, the maximum value? Max of the residual amount of the strip-shaped substrate was 1.31%.

The wrinkles of the strip-shaped substrate in the rubbing treatment were evaluated and evaluated as &quot; C &quot;. Further, with respect to the obtained rubbed band-like substrate, the alignment state was evaluated. As a result, a portion with poor alignment was present as a speckle.

[Comparative Example A3]

The same as in Comparative Example A1 except that the position of the axis A133X of the rubbing roll A1330 was adjusted in the Z direction to change the enveloping angle to 0 占 and the rubbing apparatus A1600 shown in Figs. And subjected to a rubbing treatment to evaluate it. By changing the position of the rubbing roll, the maximum value? Max of the residual amount of the strip-like base material was 0%.

The wrinkles of the strip-shaped substrate in the rubbing process were evaluated and evaluated as "A". Further, the obtained rubbed band-shaped substrate was evaluated for the alignment state, and it was found that the orientation was poor over the entire surface.

The results of Examples A1 to A3 and Comparative Examples A1 to A3 are summarized in Table 1.

From the results shown in Table 1, in Examples A1 to A3 in which devices and manufacturing methods satisfying the conditions of the rubbing process specified in the present invention were carried out, compared to Comparative Examples A1 to A3, the degree of rubbing You can see what you can do.

[Evaluation method, materials to be used and conditions for implementation: Examples B1A to B5A and B1B to B7B and Comparative Examples B1A to B7A and B1B to B5B]

B1. Evaluation method: alignment state]

In order to evaluate the state of the alignment restraining force of the rubbed band base material, a liquid crystal composition containing a polymerizable liquid crystal compound was applied on the band base material and cured to form a layer of the cured liquid crystal composition, and the alignment state was observed.

As the liquid crystal composition, the evaluation method [A2. Alignment state] was used.

The liquid crystal composition was applied to the rubbed surface of the rubbed band-shaped substrate using a die coater to form a liquid crystal composition layer. The layer of the liquid crystal composition was subjected to orientation treatment at 110 占 폚 for 2.5 minutes and irradiated with ultraviolet rays of 100 mJ / cm2 or more in a nitrogen atmosphere to obtain a liquid crystal resin film layer having a dry film thickness of 2 占 퐉. This layer was observed under a cross-nicol using a polarizing microscope to observe the state of alignment, and it was evaluated as &quot; good &quot; with a uniform orientation with respect to the entire surface without alignment defects and with &quot; defective &quot; For those evaluated as &quot; defective &quot;, there are "defective A" where alignment defects are present as unevenness in the center portion and portions where no rubbing treatment is present at all, And those that are not visible are classified as &quot; bad B &quot;.

B2. Used band-shaped substrate]

As the belt-like substrate, the following belt-like substrates (1) to (4) were prepared.

(E) = 4400 MPa, thickness d = 100 占 퐉, width 400 mm, Ed = 440,000 Pa 占 퐉 (m), manufactured by Toyobo Co., , Edw = 176,000 Pa · m 2.

(E) = 4600 MPa, thickness (d) = 50 占 퐉, width 400 mm, Ed = 230,000 Pa 占 퐉, Edw = 92,000 Pa · ㎡.

(E) = 2200 MPa, thickness (d) = 100 탆, width 400 mm (3 mm), and the like. , Ed = 220,000 Pa · m, Edw = 88,000 Pa · m 2.

(E) = 2200 MPa, thickness (d) = 50 占 퐉, width 400 mm (占 퐉) , Ed = 110,000 Pa · m, Edw = 44,000 Pa · m2.

On the other hand, the strip-like base materials 1 and 2 have a structure in which one of the strip-like base materials 3 and 4 has no easily distinguishable front and rear faces, ). The rubbing of the strip-shaped base materials (1) and (2) was carried out on the opposite side of the adhesive surface.

[B3. Roll arrangement of used device]

Placement (1):

The rubbing roll and the view roll at the upstream side and the end roll at the downstream side are arranged in the same manner as the rubbing device B100 schematically shown in Figs. 19 to 20.

The diameters of two cylindrical pre-rolls (grip rolls) B110 and B150 as the viewpoint roll and the end point roll were all 80 mm. The diameter of the cylindrical rubbing roll B 130 was 120 mm. The axes B11X and B15X of the pre rolls B110 and B150 and the axis B13X of the rubbing roll B 130 were installed horizontally. The axes B11X and B15X of the pre rolls B110 and B150 were made parallel to each other. The vibration angle of the rubbing roll B130 was 45 占 and the position of the axis B13X in the Z direction was adjusted so that the enveloping angle was 30 占. As a result, the maximum residual amount epsilon max of the strip-shaped substrate was 0.34% and the average residual amount epsilon avg was 0.22%.

Placement (2):

The spacing between the axes B11X and B15X of the pre rolls B110 and B150 of the arrangement 1 is wider than that of the arrangement 1 and as a result the maximum residual amount epsilon max of the strip substrate is 0.1% ) Was 0.07%.

Placement (3):

The rubbing roll, the upstream side pre-roll and the downstream side pre-roll were arranged in the same manner as the rubbing device B400 schematically shown in Figs. 22 to 24.

As the two pre-rolls and the rubbing rolls B430, the same ones as those used in the arrangement (1) were used. The axis B41X of the pre-roll B410 and the axis B43X of the rubbing roll B430 are provided in the horizontal direction and the conveying of the strip-like base material B13 from the pre-roll B410 to the rubbing roll B430 And their positions were adjusted so that the paths were also in the horizontal direction. The vibration angle of the rubbing roll B430 was 45 deg. And the enveloping angle was 60 deg. The transport path from the strip-like base material to the pre-roll B450 until it comes into contact with the pre-roll B450 is set to about 1000 mm, the position and angle of the pre-roll are adjusted in this state, Like substrate (B13) carried out from the rubbing roll (B430) is carried out in the same direction in the width direction of the strip-shaped substrate (the conveying direction of the strip- The maximum residual amount epsilon max and the average residual amount epsilon avg of the strip-shaped base material are 0.02% and 0.02%, respectively, so that the angle formed by the direction of the reference and the other direction of loading or unloading is within 0.5 [ %.

[Comparative Examples B1A to B7A and Examples B1A to B5A]

(1) to (4) and arrangements (1) to (3) were selected as shown in Table 2 and rubbing was carried out by using these as the rubbed band shape The alignment state of the substrate was evaluated. The results are shown in Table 2.

Line speed: 4m / min

Rubbing roll revolution: 1000 rpm

Rubbing roll rotation direction: reverse rotation (direction indicated by arrow BR2 in the figure)

Tension: 60 N (150 N / m)

[Comparative Examples B1B to B5B and Examples B1B to B7B]

(1) to (4) and arrangements (1) to (3) were selected as shown in Table 3, and rubbing was carried out using these. The rubbing conditions were the same as those of Comparative Examples B1A to 7A and Examples B1A to 5A except that the tension was 120 N (300 N / m).

The alignment state of the rubbed band-like substrate obtained thereby was evaluated. The results are shown in Table 3.

From the results shown in Tables 2 to 3, in Examples B1A to B5A and Examples B1B to B7B in which devices and manufacturing methods satisfying the conditions of the rubbing process specified in the present invention were carried out, Comparative Examples B1A to B7A and Comparative Examples B1B To B5B, it is possible to achieve the inclined rubbing in which the degree of rubbing is uniform.

For example, it can be seen from the contrast between Comparative Example B5B and Example B1B that the thickness of the strip-shaped substrate is reduced so that even when the material of the strip-shaped substrate is PET having a high Young's modulus, . For example, from the comparison between Comparative Example B5B and Example B2B, by adopting a material having a low Young's modulus as the material of the strip-shaped substrate, it is possible to achieve uniform inclined rubbing even if the thickness of the strip- Can be seen. It is also understood that, in the case of employing arrangement (3) in which εmax-εavg is small, uniform inclined rubbing can be achieved in the case of employing various belt-like bases and tensile forces.

[Evaluation method: Examples C1 to C3 and Comparative Examples C1 to C3]

C1. Wrinkles of strip-shaped substrate during rubbing processing]

In order to evaluate whether or not rubbing treatment without twist was performed, the presence or absence of wrinkles of the strip-shaped substrate during the rubbing treatment was observed. The state of the belt-shaped substrate conveyed in the vicinity of the rubbing roll during the rubbing treatment was observed to evaluate A as a wrinkle was not observed, B as a wrinkle was slightly observed and C as a wrinkle was clearly observed.

C2. Alignment state]

In order to evaluate the state of the alignment restraining force of the rubbed band base material, a liquid crystal composition containing a polymerizable liquid crystal compound was applied on the band base material and cured to form a layer of the cured liquid crystal composition, and the alignment state was observed.

As the liquid crystal composition, the evaluation method [A2. Alignment state] was used.

The liquid crystal composition was applied to the rubbed surface of the rubbed band-shaped substrate using a die coater to form a liquid crystal composition layer. The layer of the liquid crystal composition was subjected to orientation treatment at 110 占 폚 for 2.5 minutes and irradiated with ultraviolet rays of 100 mJ / cm2 or more in a nitrogen atmosphere to obtain a liquid crystal resin film layer having a dry film thickness of 2 占 퐉. This layer was observed under a cross-nicol state using a polarizing microscope to evaluate whether or not a uniform orientation was obtained with respect to the entire surface without alignment defects.

[Example C1]

(C1-1. Band-like substrate)

Pellets of a thermoplastic norbornene resin (trade name &quot; ZEONOR1420R &quot;, manufactured by Nippon Zeon Co., Ltd.) were melt-extruded to obtain a strip-shaped substrate having a width of 400 mm and a thickness of 50 탆.

(C1-2 rubbing treatment)

Using the rubbing apparatus C100 schematically shown in Figs. 25 to 31, the strip substrate obtained in (C1-1) was rubbed to produce a rubbed strip substrate.

The diameter of the two cylindrical pre-rolls (grip rolls) was all 80 mm. The diameter of the cylindrical rubbing roll C130 was 120 mm. The axes C11X, C12X, C13X, C14X, and C15X of the pre-roll C 110, the floating carrier C 120, the rubbing roll C 130, the floating carrier C 140 and the pre- . Further, the axes C11X and C15X were made parallel to the coordinate axis Y, and the vibration angles of the axes C12X, C13X and C14X were 45 DEG. The rubbing rolls C130 are provided at positions intermediate therebetween and the float conveying devices C120 and C140 are provided with Cθw12 = 30 °, Cθw13 = 60 °, and Cθw14 = 30 °. The carrying direction of the strip-shaped base material C13 carried in the rubbing roll C 130 and the carrying-out direction of the strip-shaped base material C14 carried out from the rubbing roll C 130 are the same in the width direction of the strip- The angle formed between the direction of the reference and the other carry-in or take-out direction is within 0.5 占 with respect to the carry-in or carry-out direction at the center in the width direction). Also, the maximum value? Max of the residual amount of the strip-shaped substrate was 0.05% or less. Further, with this arrangement, the carrying-out direction with respect to the carrying-in direction of the strip-shaped base material in the rubbing apparatus became a direction in which there is no skew. The line speed at which the strip-like base materials C11 to C16 were conveyed was 4 m / min, and the tension was 150 N / m. The rubbing roll C130 was rotated counterclockwise (rotation in the direction indicated by arrow CR2 in the figure) at 1000 rpm.

The wrinkles of the strip-shaped substrate in the rubbing process were evaluated and evaluated as "A". Further, the obtained rubbed band-like substrate was evaluated for the alignment state, and it was evaluated that the alignment was uniform over the entire surface and was good.

[Example C2]

Using the rubbing apparatus C800 shown schematically in FIGS. 32 to 34, the strip-shaped substrate obtained in (C1-1) of Example C1 was rubbed to produce a rubbed strip-shaped substrate.

As the pre-roll, the floating carrier and the rubbing roll, the same ones as used in Example C1 were used. The directions of the axes C81X, C13X, C84X, and C85X of the pre-roll C810, the rubbing roll C130, the floating carrier C840 and the pre-roll C850 were all oriented horizontally. The axes C81X and C85X were parallel to the coordinate axis Y to adjust the positional relationship of the axes C81X and C85X in the coordinate axis Z direction so that the strip-like base materials C13 and C15 were transported in the horizontal direction. The oscillation angles of the axes C13X and C84X were set to 45 degrees. The rubbing roll C130 is provided at an intermediate position between the rolls of the free roll C810 and the free roll C850 with a gap of about 1000 mm between the free rolls C810 and C850. 60 °. The carrying direction of the strip-like base material C13 carried into the rubbing roll C 130 and the carrying-out direction of the strip-shaped base material C 14 carried out of the rubbing roll C 130 were the same in the width direction of the strip-shaped base material. Also, the maximum value? Max of the residual amount of the strip-shaped substrate was 0.05% or less. Further, with this arrangement, the carrying-out direction with respect to the carrying-in direction of the strip-shaped base material in the rubbing apparatus became a direction in which there is no skew. Other conditions were the same as in Example C1.

The wrinkles of the strip-shaped substrate in the rubbing process were evaluated and evaluated as "A". Further, the obtained rubbed band-like substrate was evaluated for the alignment state, and it was evaluated that the alignment was uniform over the entire surface and was good.

[Example C3]

Using the rubbing apparatus C1100 schematically shown in Figs. 35 to 36, the strip-shaped substrate obtained in (C1-1) of Example C1 was rubbed to produce a rubbed strip-shaped substrate.

The rotation angle in the carrying direction by the floating carrier C1140 was set to be larger than 60 DEG of C? W84 in Example C2 to 80 DEG. Further, the pre-roll C850 used in Example C2 was not used, and the strip-like base material C16 to be carried out was taken out by using another roll and a winding device. With this arrangement, the carrying-out direction with respect to the carrying-in direction of the strip-shaped base material to the rubbing apparatus became a meandering direction. Other conditions were the same as in Example C1.

The wrinkles of the strip-shaped substrate in the rubbing process were evaluated and evaluated as "A". Further, the obtained rubbed band-like substrate was evaluated for the alignment state, and it was evaluated that the alignment was uniform over the entire surface and was good.

[Comparative Example C1]

Using the rubbing apparatus (C1300) schematically shown in Figs. 13 to 15, the strip-shaped substrate obtained in (C1-1) of Example C1 was rubbed to produce a rubbed strip-shaped substrate.

As the two pre-rolls and the rubbing rolls C1330, those same as those used in Example C1 were used. The axes C131X and C135X of the pre rolls C1310 and C1350 and the axis C133X of the rubbing roll C1330 are installed in the horizontal direction. The axes (C131X and C135X) of the pre-rolls (C1310 and C1350) were parallel to each other. The vibration angle of the rubbing roll C1330 was set to 45 degrees, and the position of the axis C133X in the Z direction was adjusted so that the envelope angle was 30 degrees. As a result, the carrying direction of the strip-like base material C13 carried in the rubbing roll C1330 and the carrying-out direction of the strip-shaped base material C14 carried out from the rubbing roll C1330 are not the same in the width direction of the strip- , And the maximum value? Max of the remaining amount of the strip-shaped substrate was 0.3453%. With this arrangement, the direction of the strip-shaped base material in the feeding direction with respect to the rubbing device is rotated about the axis C133X of the rubbing roll C1330 arranged at the vibration angle of 45 degrees, I snaked. Other conditions were the same as in Example C1.

The wrinkles of the band-shaped substrate in the rubbing treatment were evaluated and evaluated as &quot; B &quot;. Further, the obtained rubbed band-shaped substrate was evaluated for its alignment state, and found that the portion with poor orientation was present as a speckle.

[Comparative Example C2]

The rubbing treatment was carried out in the same manner as in Comparative Example C1, except that the position of the axis C133X of the rubbing roll C1330 in the Z direction was adjusted to 60 degrees. By changing the position of the rubbing roll, the maximum value? Max of the remaining amount of the strip-shaped substrate was 1.3099%. With this arrangement, the carrying-out direction with respect to the carrying-in direction of the strip-shaped base material to the rubbing device was slightly skewed by rotating around the axis C133X of the rubbing roll C1330 arranged at the vibration angle of 45 degrees .

The wrinkles of the strip-shaped substrate in the rubbing treatment were evaluated and evaluated as &quot; C &quot;. Further, the obtained rubbed band-shaped substrate was evaluated for its alignment state, and found that the portion with poor orientation was present as a speckle.

[Comparative Example C3]

The same as in Comparative Example C1 except that the position in the Z direction of the axis C133X of the rubbing roll C1330 was adjusted so that the enveloping angle was changed to 0 deg and the rubbing apparatus C1600 shown in Figs. And subjected to a rubbing treatment to evaluate it. By changing the position of the rubbing roll, the maximum value? Max of the residual amount of the strip-like base material was 0%. With this arrangement, the direction in which the strip-like base material was fed into the rubbing device in the carrying-out direction became a direction in which there was no skew.

The wrinkles of the strip-shaped substrate in the rubbing process were evaluated and evaluated as "A". Further, the obtained rubbed band-like substrate was evaluated for the alignment state, and it was found that the orientation was poor over the entire surface.

The results of Examples C1 to C3 and Comparative Examples C1 to C3 are summarized in Table 4.

From the results shown in Table 4, in Examples C1 to C3 in which devices and manufacturing methods satisfying the conditions of the rubbing process specified in the present invention were performed, it was found that compared to Comparative Examples C1 to C3, You can see what you can do. In particular, in Examples C1 and C2, the sum of the rotation angle of rotation of the belt-shaped substrate in the conveying direction by the rubbing roll and the rotation angle of rotation in the conveying direction by the conveying device is set to approximately 0, .

[Evaluation method: Examples D1 to D8 and Comparative Examples D1 to D3]

D1. Wrinkles of strip-shaped base material on rubbing roll]

The presence or absence of wrinkles of the strip-shaped substrate on the rubbing roll during the rubbing process was observed. The state of the strip-shaped base material on the rubbing roll during the rubbing process was observed, and it was evaluated as &quot; no &quot;, no wrinkles were observed, &quot; slightly wrinkled &quot;

[D2. Alignment state]

In order to evaluate the state of the alignment restraining force of the rubbed band base material, a liquid crystal composition containing a polymerizable liquid crystal compound was applied on the band base material and cured to form a layer of the cured liquid crystal composition, and the alignment state was observed.

As the liquid crystal composition, the evaluation method [A2. Alignment state] was used.

The liquid crystal composition was coated on the rubbed surface of the rubbed band-shaped substrate using a die coater to form a liquid crystal composition layer. The layer of the liquid crystal composition was subjected to orientation treatment at 110 占 폚 for 2.5 minutes and irradiated with ultraviolet rays of 100 mJ / cm2 or more in a nitrogen atmosphere to obtain a liquid crystal resin film layer having a dry film thickness of 2 占 퐉. This layer was observed under a cross-nicol using a polarizing microscope to observe the state of alignment, and it was evaluated as &quot; good &quot; that a uniform orientation was obtained with respect to the entire surface without alignment defects and &quot; defective &quot;

[D3. Meander of the strip-shaped substrate

The presence or absence of meandering of the strip-shaped substrate generated during the rubbing process was observed. Shaped substrate was shrunk to a large extent, while the band-shaped substrate was shaken to a small extent, and the band-shaped substrate was hardly shaken.

[Comparative Example D1]

(CpD1-1. Band-shaped substrate)

Pellets of a thermoplastic norbornene resin (trade name &quot; ZEONOR1420R &quot;, manufactured by Nippon Zeon Co., Ltd.) were melt-extruded to obtain a strip-shaped substrate having a width of 400 mm and a thickness of 50 탆.

(CpD1-2 rubbing treatment)

44 to 45, a band-shaped base material obtained in (CpD1-1) of Comparative Example D1 was rubbed to produce a rubbed band-like base material.

Both of the two pre-rolls (D710 and D750) were straight rolls that grip the strip-shaped base material, both of which had a diameter of 80 mm. The rubbing roll D730 was also a straight roll, and its diameter was 120 mm. The axes D71X and D75X of the pre rolls D710 and D750 and the axis D73X of the rubbing roll D730 were installed horizontally. The axes D71X and D75X of the pre-rolls D710 and D750 were parallel to each other. The distance between the axis D71X and the axis D75X was set to 1000 mm. The oscillation angle of the rubbing roll D730 was set at 45 占 and the position of the axis D73X in the Z direction was adjusted so that the envelope angle was 30 占. The maximum residual amount (? Max) was 0.34%.

The line speed at which the strip-like base materials D11 to D16 were conveyed was 4 m / min, and the tension was 60 N (150 N / m). The rubbing roll D730 was rotated in the reverse direction (rotation in the direction indicated by the arrow DR2) at 1000 rpm.

The wrinkles of the strip-shaped substrate on the rubbing roll and the meandering of the strip-shaped substrate in the rubbing treatment and the state of the alignment restoring force of the rubbed strip-shaped substrate were evaluated. The results are shown in Table 5.

[Comparative Example D2]

The rubbing treatment was carried out in the same manner as in Comparative Example D1, except that the position of the axis D73X of the rubbing roll D730 in the Z direction was adjusted to 60 deg. The results are shown in Table 5. The maximum residual amount (? Max) was 1.31%.

[Comparative Example D3]

The rubbing treatment was carried out in the same manner as in Comparative Example D1, except that the position of the axis D73X of the rubbing roll D730 in the Z direction was changed to 0 degree. The results are shown in Table 5. The maximum residual amount (? Max) was 0.00%.

[Example D1]

Rubbing treatment was carried out in the same manner as in Comparative Example D1, except that the following points were changed. The results are shown in Table 5.

As a downstream roll, a pre-roll (D350) for gripping an inverted crown type belt-like base material shown in Figs. 40 to 41 was used in place of the pre roll (D750) shown in Figs. The maximum diameter of the pre-roll D350 (the diameter indicated by the arrow DR31R in the example of FIG. 43) is D100 mm, the maximum diameter of the pre-roll D350 is 130 mm (the diameter indicated by the arrow DR31L in the example of FIG. 43) The minimum diameter (diameter indicated by an arrow DR31C in the example of FIG. 43) was 80 mm.

The band-shaped substrate transferring method downstream of the rubbing rolls D130 is similar to the band-like substrates D14 and D16 shown in Figs. 40 to 41. Fig.

As a result of the above change, the maximum residual amount? Max was 0.05% or less.

[Example D2]

Rubbing treatment was carried out in the same manner as in Comparative Example D1, except that the following points were changed. The results are shown in Table 5.

The pre rolls D110 and D150 for gripping the crown-shaped belt-like base materials shown in Figs. 38 to 39 are used as the upstream rolls and the downstream rolls in place of the pre rolls D710 and D750 shown in Figs. . The maximum diameter of the pre rolls D110 and D150 (the diameter indicated by the arrow DR11C in the example of FIG. 42) was 96 mm and the minimum diameter (the diameter indicated by the arrows DR11R and DR11L in the example of FIG. 42) was 80 mm. As a result, the maximum residual amount? Max was 0.05% or less.

[Example D3]

Rubbing treatment was carried out in the same manner as in Comparative Example D1, except that the following points were changed. The results are shown in Table 5.

A pre roll D310 for gripping the reverse crown type belt-like base material shown in Figs. 40 to 41 was used in place of the pre roll D710 shown in Figs. 44 to 45 as the upstream side roll. The maximum diameter of the pre-roll D310 (the diameter indicated by the arrow DR31R in the example of Fig. 43) is 130 mm, the maximum diameter of the pre-roll D310 (the diameter indicated by the arrow DR31L in the example of Fig. The minimum diameter (diameter indicated by an arrow DR31C in the example of FIG. 43) was 80 mm.

The belt-like base material transferring method in the upstream of the rubbing roll D130 is the same as the band-like base material D11 and D13 in Figs. 40 to 41. Fig.

As a result of the above change, the maximum residual amount? Max was 0.05% or less.

[Example D4]

Rubbing treatment was carried out in the same manner as in Comparative Example D1, except that the following points were changed. The results are shown in Table 5.

(D310 and D350) of the reverse crown type which grip the belt-like base material shown in Figs. 40 to 41 instead of the pre rolls (D710 and D750) shown in Figs. 44 to 45 as the upstream roll and the downstream roll, . 43) and the minimum diameter (diameter indicated by the arrow DR31C in the example of Fig. 43) was 80 mm, and the maximum diameter (the diameter indicated by the arrows DR31R and DR31L in the example of Fig. 43) of the pre rolls D310 and D350 was 96 mm .

The band-shaped substrate was delivered in the same manner as the band-like substrates D11 to D16 shown in Figs. 40 to 41. Fig.

As a result of the above change, the maximum residual amount? Max was 0.05% or less.

[Example D5]

Rubbing treatment was carried out in the same manner as in Comparative Example D1, except that the following points were changed. The results are shown in Table 5.

As a rubbing roll, a crowning type rubbing roll D130 shown in Figs. 38 to 41 was used in place of the rubbing roll D730 shown in Figs. 44 to 45. The rubbing roll D130 had a maximum diameter (diameter indicated by an arrow DR11C in the example of Fig. 42) of 140 mm and a minimum diameter (diameter indicated by the arrows DR11R and DR11L in the example of Fig. 42) of 120 mm. As a result, the maximum residual amount? Max was 0.05% or less.

[Example D6]

Rubbing treatment was carried out in the same manner as in Comparative Example D1 except that the rubbing device D100 schematically shown in Figs. 38 to 39 was used instead of the rubbing device D700 shown in Figs. 44 to 45 .

The diameter of the crown-shaped rubbing roll D130 was 125 mm and the minimum diameter (indicated by the arrows DR11R and DR11L in the example of Fig. 42) was 120 mm . The pre-rolls D110 and D150 for gripping the crown-shaped band-like base material have a maximum diameter (diameter indicated by an arrow DR11C in the example of Fig. 42) of 92 mm and a minimum diameter (indicated by arrows DR11R and DR11L ) Was 80 mm. As a result, the maximum residual amount? Max was 0.05% or less.

The results are shown in Table 5.

[Example D7]

Rubbing treatment was carried out in the same manner as in Comparative Example D1, except that the following points were changed. The results are shown in Table 5.

As a rubbing roll, a crowning type rubbing roll D130 shown in Figs. 38 to 41 was used in place of the rubbing roll D730 shown in Figs. 44 to 45. The rubbing roll D130 had a maximum diameter (diameter indicated by an arrow DR11C in the example of Fig. 42) of 125 mm and a minimum diameter (diameter indicated by the arrows DR11R and DR11L in the example of Fig. 42) of 120 mm.

A pre roll D310 for gripping the reverse crown type belt-like base material shown in Figs. 40 to 41 was used in place of the pre roll D710 shown in Figs. 44 to 45 as the upstream side roll. The maximum diameter of the pre-roll D310 (the diameter indicated by the arrow DR31R in the example of FIG. 43) is 96 mm, the maximum diameter of the pre-roll D310 (the diameter indicated by the arrow DR31L in the example of FIG. 43) The minimum diameter (diameter indicated by an arrow DR31C in the example of FIG. 43) was 80 mm.

The band-shaped substrate transferring method upstream of the rubbing roll D130 is the same as the band-like base material D11 and D13 shown in Figs. 40 to 41. Fig.

As a result of the above change, the maximum residual amount? Max was 0.05% or less.

[Example D8]

A rubbing treatment was performed and evaluated in the same manner as in Comparative Example D1 except that the rubbing device D300 schematically shown in Figs. 40 to 41 was used instead of the rubbing device D700 shown in Figs. 44 to 45 .

The diameter of the crown-shaped rubbing roll D130 was 125 mm and the minimum diameter (indicated by the arrows DR11R and DR11L in the example of Fig. 42) was 120 mm . (The diameters indicated by the arrows DR31R and DR31L in the example of FIG. 43) are 92 mm and the minimum diameter (in the example of FIG. 43, the arrows DR31C) was 80 mm. As a result, the maximum residual amount? Max was 0.05% or less.

The results are shown in Table 5.

The results of Examples D1 to D8 and Comparative Examples D1 to D3 are summarized in Table 5.

Defective ※ 1: X Defective place exists as stain

Bad ※ 2: Front defect

From the results shown in Table 5, in Examples D1 to D8 in which devices and manufacturing methods satisfying the conditions of the rubbing process specified in the present invention were carried out, compared to Comparative Examples D1 to D3, You can see what you can do.

A11 to A16:
A100: rubbing device
A110: Freeroll
A11X: Axis
A130: rubbing roll
A131: Position on the rubbing roll
A132: Position on the rubbing roll
A13X: Axis
A150: Freeroll
A15X: Axis
A600: rubbing device
A610: Freeroll
A61X: Axis
A650: Freeroll
A65X: Axis
A800: rubbing device
A810: Freeroll
A81X: Axis
A820: Flotation device
A821:
A821S: conveying surface
A822: Air inlet
A82X: Axis
A840: Flotation device
A84X: Axis
A850: Freeroll
A85X: Axis
A1300: rubbing device
A1310: Freeroll
A131X: Axis
A1330: rubbing roll
A1332: Position on the rubbing roll
A133X: Axis
A1350: Freeroll
A135X: Axis
A1600: rubbing device
AP 130-1 to AP130-5:
A? W:
B11 to B16: strip-shaped substrate
B100: rubbing device
B110: Freeroll
B11X: Axis
B130: Rubing roll
B13X: Axis
B150: Freeroll
B15X: Axis
B400: rubbing device
B410: Freeroll
B41X: Axis
B430: rubbing roll
B43X: Axis
B450: Freeroll
B45X: Axis
BP10-1 to BP10-7: Pass line
C11 to C16: strip-shaped substrate
C100: rubbing device
C110: Freeroll
C11X: Axis
C120: Flotation device
C121: Location on the lifting conveyor
C122: Location on the lifting conveyor
C123:
C123S: conveying surface
C124:
C12X: Axis
C130: rubbing roll
C131: Position on the rubbing roll
C132: Position on the rubbing roll
C13X: Axis
C140: Flotation carrier
C141: Location on the floating carrier
C142: Location on the lifting conveyor
C14X: Axis
C150: Freeroll
C15X: Axis
C800: rubbing device
C810: Freeroll
C81X: Axis
C840: Flotation device
C850: Freeroll
C85X: Axis
C1100: rubbing device
C1140: Flotation device
C114X: Axis
C1300: rubbing device
C1310: Freeroll
C131X: Axis
C1330: rubbing roll
C133X: Axis
C1332: Position on the rubbing roll
C1350: Freeroll
C135X: Axis
CP130-1 to CP130-5:
C? W13: Surrounding angle
C? W12: rotation angle of the strip-shaped substrate
C? W 14: rotation angle of the strip-
C? W84: rotation angle of the strip substrate
D11 to D16: strip-shaped substrate
D11L, D11R: End portions of the strip-shaped substrate
D100: rubbing device
D110: Freeroll
D11X: Axis
D130: rubbing roll
D13X: Axis
D150: Freeroll
D15X: Axis
D300: rubbing device
D310: Freeroll
D31X: Axis
D350: Freeroll
D35X: Axis
D700: rubbing device
D710: Freeroll
D71X: Axis
D730: rubbing roll
D73X: Axis
D750: Freeroll
D75X: Axis
DP70-1 to DP70-7: Pass line

Claims (46)

A method for producing a rubbed strip-shaped substrate,
And a rubbing step of rubbing the strip-like base material brought in from the upstream of the conveying path into contact with a rubbing roll rotating around the rotation axis and carrying it out to the downstream of the conveying path,
In the rubbing step,
The rubbing roll is brought into contact with the strip-shaped substrate at a surrounding angle exceeding 0 DEG, thereby rotating the strip-shaped substrate in the conveying direction,
The transport direction of the strip-shaped substrate and the rotation axis of the rubbing roll form non-orthogonal angles,
Like substrate in a widthwise direction of the strip-shaped substrate at a position where the contact between the strip-shaped base material and the rubbing roll is started with the rubbing roll,
Like base material in a widthwise direction of the strip-shaped base material at a position where the contact between the belt-like base material and the rubbing roll carried out from the rubbing roll is terminated. The method according to claim 1,
Further comprising a step of rotating the conveying direction by a conveying device that rotates the conveying direction of the strip-shaped substrate at an angle exceeding 0 degrees on the upstream side, the downstream side, or both of the rubbing process. Way. 3. The method of claim 2,
Wherein at least one of the conveying devices is a conveying roll and the direction of rotation axis of rotation in the conveying direction is orthogonal to the conveying direction of the belt-like substrate. 4. The method according to any one of claims 1 to 3,
Wherein the rubbing roll is provided so that the rotation axis of the rubbing roll is horizontal,
Like base material at a position where the contact between the strip-shaped base material and the rubbing roll is started, or the strip-shaped base material at the position where the contact between the strip- And the outgoing direction of the substrate is horizontal. 5. The method according to any one of claims 1 to 4,
Wherein an angle formed between the conveying direction of the strip-shaped substrate and the rotation axis of the rubbing roll is 35 DEG or more and 55 DEG or less. A rubbing device for rubbing a strip-shaped base material,
And a rubbing roll which rotates about a rotation axis, rubs in contact with the band-shaped substrate conveyed from the upstream of the conveying path, and conveys to the downstream of the conveying path,
In the rubbing roll,
Like substrate with an enveloping angle exceeding 0 DEG, thereby rotating the conveying direction of the strip-shaped substrate,
Like substrate is made to have a non-orthogonal angle with the rotation axis of the rubbing roll,
Like substrate in a widthwise direction of the strip-shaped substrate at a position where the contact between the strip-shaped substrate and the rubbing roll is started to be carried in the rubbing roll,
Like base material is arranged such that the strip-shaped base material is taken out in the same direction across the width direction of the strip-shaped base material at a position where the contact between the strip-shaped base material and the rubbing roll carried out from the rubbing roll is terminated. The method according to claim 6,
Further comprising a conveying device for rotating the conveying direction of the strip-shaped base material at an angle exceeding 0 degrees on the upstream side, the downstream side, or both of the rubbing rolls. 8. The method of claim 7,
Wherein at least one of the conveying devices is a conveying roll, and the direction of the rotation axis of the conveying roll is orthogonal to the conveying direction of the belt-shaped substrate. 9. The method according to any one of claims 6 to 8,
Wherein the rubbing roll is provided so that the rotation axis of the rubbing roll is horizontal,
Like base material at a position where the contact between the strip-shaped base material and the rubbing roll is started, or the strip-shaped base material at the position where the contact between the strip- Wherein the direction of removal of the substrate is horizontal. 10. The method according to any one of claims 6 to 9,
Wherein an angle formed between the conveying direction of the strip-shaped substrate and a rotation axis of the rubbing roll is not less than 35 degrees and not more than 55 degrees. A method for producing a rubbed strip-shaped substrate,
And a rubbing step of rubbing the strip-shaped substrate conveyed along the conveying path in contact with a rubbing roll rotating around the rotating shaft while applying a tensile force T (N) in the conveying direction,
The rubbing roll is brought into contact with the strip-shaped substrate at a surrounding angle exceeding 0 DEG, thereby rotating the strip-shaped substrate in the conveying direction,
Wherein the conveying direction of the strip-shaped substrate and the rotation axis of the rubbing roll are non-orthogonal,
Wherein said band base material has a Young's modulus E (Pa), a thickness d (m) and a width w (m) in the transport direction,
Wherein the maximum value? Max (%) of the residual amount in the conveyance path and the average value? Evg (%) of the residual amount satisfy the formula (1).
(? max-? avg) Edw &lt; 30T Expression (1) 12. The method of claim 11,
Wherein a product (Ed) of the Young's modulus (E) and the thickness (d) in the conveying direction of the strip-shaped substrate is 400,000 Pa · m or less. 13. The method according to claim 11 or 12,
Wherein the Young's modulus (E) in the conveying direction of the strip-shaped substrate is 3,000 MPa or less. 14. The method according to any one of claims 11 to 13,
Wherein a maximum value (? Max) of the remaining amount and an average value (? Avg) of the remaining amount satisfy the formula (2).
? max-eavg < 0.02% Equation (2) 15. The method according to any one of claims 11 to 14,
Wherein an angle formed between the conveying direction of the strip-shaped substrate and the rotation axis of the rubbing roll is 35 DEG or more and 55 DEG or less. A rubbing device for rubbing a strip-shaped base material,
A pre-roll for conveying the strip-shaped substrate along a conveying path while applying a tension T (N) in the conveying direction, and
And a rubbing roll which rotates around a rotation axis and rubs the strip substrate in contact with the strip substrate,
The rubbing roll is brought into contact with the strip-shaped substrate at a surrounding angle exceeding 0 DEG, thereby rotating the strip-shaped substrate in the conveying direction,
Wherein the rubbing roll is disposed so that the conveying direction of the strip-shaped base material and the rotation axis of the rubbing roll form non-orthogonal angles,
The pre-roll and the rubbing roll may be formed by a roll-
The Young's modulus (E) (Pa), the thickness (d) (m) and the width (w) (m) of the strip-
Wherein a maximum value (? Max (%) of the residual amount in the conveying path and an average value (? Avg (%)) of the remaining amount are arranged so as to satisfy the formula (1).
(? max-? avg) Edw &lt; 30T Expression (1) 17. The method of claim 16,
Wherein a product (Ed) of the Young's modulus (E) and the thickness (d) in the conveying direction of the strip-shaped substrate is 400,000 Pa · m or less. 18. The method according to claim 16 or 17,
Wherein the Young's modulus (E) in the conveying direction of the strip-shaped substrate is 3,000 MPa or less. 19. The method according to any one of claims 16 to 18,
Wherein a maximum value (? Max) of the remaining amount and an average value (? Avg) of the remaining amount satisfy the formula (2).
? max-eavg < 0.02% Equation (2) 20. The method according to any one of claims 16 to 19,
Wherein an angle formed between the conveying direction of the strip-shaped substrate and the rotation axis of the rubbing roll is not less than 35 degrees and not more than 55 degrees. A method for producing a rubbed strip-shaped substrate,
A rubbing step of rubbing the strip-like base material brought in from the upstream of the conveying path into contact with a rubbing roll rotating around the rotation axis and taking it out to the downstream of the conveying path,
Like substrate is rotated by a conveying device that rotates the conveying direction of the belt-shaped substrate at an angle exceeding 0 degrees on the upstream side, the downstream side, or both of the rubbing process Including,
In the rubbing step,
The rubbing roll is brought into contact with the strip-shaped substrate at a surrounding angle exceeding 0 DEG, thereby rotating the strip-shaped substrate in the conveying direction,
The transport direction of the strip-shaped substrate and the rotation axis of the rubbing roll form non-orthogonal angles,
Like substrate in a widthwise direction of the strip-shaped substrate at a position where the contact between the strip-shaped base material and the rubbing roll is started with the rubbing roll,
Like base material in the widthwise direction of the strip-shaped base material at the position where the contact between the belt-like base material and the rubbing roll carried out from the rubbing roll is terminated,
Wherein the direction of the rotation axis of the belt-like substrate in the conveying direction by the conveying device is parallel to the rotation axis of the rubbing roll. 22. The method of claim 21,
Wherein the sum of the rotational angle of rotation of the strip-shaped base material in the carrying direction by the rubbing roll and the rotational angle of rotation in the carrying direction by the carrying apparatus is substantially 0 °. 23. The method of claim 21 or 22,
Wherein the conveying direction of the strip-shaped substrate and the rotational axis direction of rotation in the conveying direction by the conveying device form non-orthogonal angles. 24. The method of claim 23,
Wherein the step of rotating the conveying direction by the conveying device includes forming an air layer between the conveying device and the belt-like substrate. 25. The method of claim 24,
Wherein the air layer is formed by air pressure. 26. The method according to any one of claims 21 to 25,
Wherein an angle formed between the conveying direction of the strip-shaped substrate and the rotation axis of the rubbing roll is 35 DEG or more and 55 DEG or less. A rubbing device for rubbing a strip-shaped base material,
A rubbing roll which rotates about a rotating shaft, rubs in contact with the band-shaped substrate carried from upstream of the transporting path, and transports to the downstream of the transporting path, and
And a transporting device for rotating the conveying direction of the strip-shaped substrate at an angle exceeding 0 ° on the upstream side, the downstream side, or both of the rubbing rolls,
In the rubbing roll,
Like substrate with an enveloping angle exceeding 0 DEG, thereby rotating the conveying direction of the strip-shaped substrate,
Like substrate is made to have a non-orthogonal angle with the rotation axis of the rubbing roll,
Like substrate in a widthwise direction of the strip-shaped substrate at a position where the contact between the strip-shaped substrate and the rubbing roll is started to be carried in the rubbing roll,
Like base material is arranged so that the strip-shaped base material is brought out in the same direction in the width direction of the strip-shaped base material at a position where the contact between the strip-shaped base material and the rubbing roll carried out from the rubbing roll is terminated,
Wherein the conveying device is disposed such that the direction of the rotation axis of the conveying device in the conveying direction of the belt-shaped substrate is parallel to the rotation axis of the rubbing roll. 28. The method of claim 27,
Wherein the sum of the rotation angle of rotation of the strip-shaped base material in the conveyance direction by the rubbing roll and the rotation angle of rotation in the conveyance direction by the conveyance device is approximately 0 °. 29. The method of claim 27 or 28,
Wherein the conveying direction of the strip-shaped substrate and the rotating axis direction of rotation in the conveying direction by the conveying device form non-orthogonal angles. 30. The method of claim 29,
Wherein the conveying device is an apparatus for forming an air layer between the conveying device and the strip substrate. 31. The method of claim 30,
Wherein the conveying device forms the air layer by air pressure. 32. The method according to any one of claims 27 to 31,
Wherein an angle formed between the conveying direction of the strip-shaped substrate and the rotation axis of the rubbing roll is not less than 35 degrees and not more than 55 degrees. A method for producing a rubbed strip-shaped substrate,
A rubbing step of bringing the surface of the strip-like base material having the front and back surfaces brought into contact with the rubbing roll rotating around the rotational axis and carried out from the upstream of the carrying path into the downstream of the carrying path,
In the rubbing step,
The rubbing roll is brought into contact with the strip-shaped substrate at a surrounding angle exceeding 0 DEG, thereby rotating the strip-shaped substrate in the conveying direction,
The transport direction of the strip-shaped substrate and the rotation axis of the rubbing roll form non-orthogonal angles,
Wherein the shape of the strip-like base material on the transport path satisfies the following conditions (i) to (iii):
(i) at a position where the strip-shaped base material contacts the rubbing roll, the strip-shaped base material has a convex shape on the back side,
(ii) at least a part of the region between the rubbing roll and the upstream-side grip roll for gripping the strip-shaped substrate on the upstream side thereof,
(iii) at least a part of the region between the rubbing roll and the downstream-side grip roll for gripping the strip-shaped substrate on the downstream side thereof,
&Lt; / RTI &gt; 34. The method of claim 33,
Wherein the shape of the strip-like base material on the transport path satisfies the above (i)
Wherein the rubbing roll has a convex shape with respect to the strip substrate. 35. The method according to claim 33 or 34,
Wherein the shape of the strip-like base material on the transport path satisfies the above (ii)
Wherein the upstream-side grip roll has a convex shape with respect to the strip-shaped base material,
And the upstream side grip roll is in contact with the strip substrate from the back side of the strip substrate. 35. The method according to claim 33 or 34,
Wherein the shape of the strip-like base material on the transport path satisfies the above (ii)
Wherein the upstream-side grip roll has a concave shape with respect to the strip-
And the upstream-side grip roll is in contact with the belt-like base material from the surface side of the belt-like base material. 37. The method according to any one of claims 33 to 36,
Wherein the shape of the strip-like base material on the transport path satisfies the above (iii)
Wherein the downstream-side grip roll has a convex shape with respect to the strip-
And the downstream side grip roll is in contact with the strip substrate from the back side of the strip substrate. 37. The method according to any one of claims 33 to 36,
Wherein the shape of the strip-like base material on the transport path satisfies the above (iii)
The downstream-side grip roll has a concave shape with respect to the strip-shaped base material,
And the downstream side grip roll is in contact with the strip substrate from the surface side of the strip substrate. 39. The method according to any one of claims 33 to 38,
Wherein an angle formed between the conveying direction of the strip-shaped substrate and the rotation axis of the rubbing roll is 35 degrees or more and 55 degrees or less. A rubbing device for rubbing a strip-shaped base material,
And a rubbing roll which rubs against the surface of the strip-shaped substrate having a front surface and a back surface and is transported from the upstream side of the transport path and is transported downstream of the transport path,
In the rubbing roll,
Like substrate with an enveloping angle exceeding 0 DEG, thereby rotating the conveying direction of the strip-shaped substrate,
Like substrate is arranged so as to form a non-orthogonal angle between the conveying direction of the strip-shaped substrate and the rotation axis of the rubbing roll,
In the rubbing device,
Wherein the shape of the strip-like base material on the transport path satisfies the following conditions (i) to (iii):
(i) at a position where the strip-shaped base material contacts the rubbing roll, the strip-shaped base material has a convex shape on the back side,
(ii) at least a part of the region between the rubbing roll and the upstream-side grip roll for gripping the strip-shaped substrate on the upstream side thereof,
(iii) at least a part of the region between the rubbing roll and the downstream-side grip roll for gripping the strip-shaped substrate on the downstream side thereof,
Shaped substrate so as to satisfy at least one of the shape of the strip-like base material. 41. The method of claim 40,
Wherein the shape of the strip-like base material on the transport path satisfies the above (i)
And the rubbing roll has a convex shape with respect to the strip-shaped base material. 42. The method according to claim 40 or 41,
Wherein the shape of the strip-like base material on the transport path satisfies the above (ii)
Wherein the upstream-side grip roll has a convex shape with respect to the strip-shaped base material,
And said upstream side grip roll is in contact with said strip-like base material from said back side of said strip-like base material. 42. The method according to claim 40 or 41,
Wherein the shape of the strip-like base material on the transport path satisfies the above (ii)
Wherein the upstream-side grip roll has a concave shape with respect to the strip-
And the upstream-side grip roll is in contact with the strip-like base material from the surface side of the strip-like base material. 44. The method according to any one of claims 40 to 43,
Wherein the shape of the strip-like base material on the transport path satisfies the above (iii)
Wherein the downstream-side grip roll has a convex shape with respect to the strip-
And the downstream side grip roll is in contact with the strip substrate from the back side of the strip substrate. 44. The method according to any one of claims 40 to 43,
Wherein the shape of the strip-like base material on the transport path satisfies the above (iii)
The downstream-side grip roll has a concave shape with respect to the strip-shaped base material,
And the downstream-side grip roll is in contact with the strip-shaped base material from the surface side of the strip-shaped base material. 46. The method according to any one of claims 40 to 45,
Wherein an angle formed between the conveying direction of the strip-shaped substrate and the rotation axis of the rubbing roll is not less than 35 degrees and not more than 55 degrees.

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