JPH0772232B2 - Roll of sheet material, method for producing electrically conductive sheet material, method for producing dyed sheet material, and method for producing alkali-modified sheet material - Google Patents

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a roll in which a sheet-like material such as a synthetic resin is wound, a method for producing a dyed sheet-like article by dyeing the sheet-like article, and a sheet-like article made into a conductive sheet. The present invention relates to a method for producing a product, and a method for producing an alkali-modified sheet product by treating the surface of a sheet product with an alkali.

[0002]

2. Description of the Related Art Conventionally, a synthetic resin sheet such as polyester or polyacrylonitrile has been subjected to chemical treatment such as dyeing, electroconductivity, alkali modification, etc., and the surface / or surface and inside thereof has been chemically treated. The formed sheet is known as a dyed sheet, a conductive sheet, an alkali modified sheet, or the like.
As a method for producing these sheets, a method of immersing in a treatment solution for performing each chemical treatment and performing the treatment is usually used. For example, when dyeing a synthetic resin sheet,
The Under-Zicker method or the continuous method using a large dyeing bath is used.

As a method for making the above-mentioned sheet conductive, the present applicant holds a porous material such as a non-woven fabric between the sheets so that the whole surface of the sheet is held in contact with the sheet, and a monomer having an ability to form a conductive polymer is obtained. A method has been proposed in which the monomer is oxidatively polymerized in a liquid containing an oxidizing agent and the sheet is uniformly made conductive (JP-A-3-233807).

Further, when carrying out alkali modification, an under-Zicker method or a continuous method using a large processing bath has been used as in the case of dyeing with an alkali processing solution such as caustic soda.

[0005]

However, the above conventional sheet dyeing method requires unevenness in the tension of the sheet, uneven dyeing due to meandering of the sheet in the bath, and a very large amount of treatment liquid. The waste of dye was unavoidable.

Further, in the above-mentioned conductive treatment method, although a relatively uniform treatment is carried out and a good product having less conductivity unevenness can be obtained, the porous polymer itself such as the nonwoven fabric also adsorbs the conductive polymer together with the sheet. Then, it becomes conductive and consumes an expensive conductive polymer. Further, there is a problem that the amount of the porous material such as the non-woven fabric used is the same as the area of the sheet to be subjected to the electroconductivity treatment, and the cost of the electroconductivity treatment is high.

Furthermore, when a non-woven fabric is used for the porous body,
Strictly speaking, there is unevenness in the fiber density of the non-woven fabric, and the unevenness makes the treatment uneven.Therefore, when high uniformity is required for the electrical conductivity treatment, the above-mentioned conventional treatment method is still insufficient. It was In this way, when producing each treated sheet by chemically treating a sheet such as a synthetic resin sheet in which the treatment liquid or the like is unlikely to penetrate, it is uniform in a short time when wound on a roll. There is a demand for an economical manufacturing method that requires a small amount of processing liquid.

The present invention has been made in order to solve the above-mentioned drawbacks of the prior art. It is possible to uniformly treat the entire surface of a sheet-like material, and to uniformly roll the sheet-like material in a state wound up on the roll. It is an object of the present invention to provide a method for producing a conductive sheet-like material, a dyeing sheet-like material, and an alkali-modified sheet-like material that can be processed at low cost in a short time.

[0009]

The roll of the sheet material of the present invention has a spacer portion formed continuously or discontinuously at least in the lengthwise direction of at least both ends in the width direction of the surface of the sheet material, and is wound into a roll shape. It is characterized in that a gap is formed by the spacer portion between the sheet-like objects.

Further, the surface of the sheet-like material or / and the surface and the inside thereof can be chemically treated by immersing the sheet-like material in the treatment liquid.

According to the method for producing a conductive sheet material of the present invention, a sheet material provided with a spacer portion continuously or discontinuously in the length direction of at least both ends in the width direction of the surface is formed into a roll shape in the length direction. It is characterized by immersing a roll of a sheet-shaped material after being wound into a conductive treatment liquid to make it conductive, or rolling in a roll shape in a lengthwise direction in a conductive treatment liquid to make conductive. .

According to the method for producing a dyed sheet-like product of the present invention, a sheet-like product provided with a spacer portion continuously or discontinuously in the lengthwise direction of at least both ends in the width direction of the surface is rolled into a roll shape in the lengthwise direction. After that, the roll of the sheet material is dyed by immersing it in a dyeing treatment liquid, or is rolled in the dyeing treatment liquid in the lengthwise direction for dyeing.

The method for producing an alkali-modified sheet material according to the present invention is a sheet material provided with a spacer portion continuously or discontinuously in the length direction of at least both ends in the width direction of the surface, and roll-formed in the length direction. After wrapping it in the roll, immerse the roll of sheet material in the alkali treatment liquid to perform alkali treatment,
Alternatively, it is characterized in that the surface of the sheet-like material is modified by rolling it in a lengthwise direction in an alkali treatment liquid and performing alkali treatment.

[0014]

In the roll of the sheet material of the present invention, since the spacer is formed on the sheet material, a void is formed on the surface of the sheet material wound into a roll so that the treatment liquid can effectively contact with the surface. It According to the production method of the present invention, the amount of the treatment liquid can be reduced with respect to the sheet material to be treated, the treatment liquid and the sheet material are in good contact with each other, and uniform treatment is performed.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A roll of sheet material of the present invention will be described in detail below with reference to the drawings. FIG. 1 is an external perspective view showing an example of the sheet material of the present invention, and FIG. 2 is A- in FIG.
It is a vertical sectional view taken along line A.

As shown in FIG. 1, for example, the sheet-shaped material roll 1 of the present invention has a spacer portion 3 continuously formed in the lengthwise direction L at both ends in the width direction W of the sheet-shaped material 2. The space between the sheet-like materials 2 wound around the space is formed by the spacer portion 3 except the spacer portion 3 as a void portion 4.

The sheet-like material used in the present invention is not limited, but it is rigid and has impact resilience made of synthetic resin such as polyester, polyamide, polycarbonate, polyvinyl chloride, polyether sulfone, polyimide, polystyrene, polypropylene and polyacrylonitrile. Sheets are preferred. Incidentally, a film generally means a film having a thickness of less than 0.25 mm, and a sheet means a film having a thickness of 0.25 mm or more, but the sheet material of the present invention includes a film. The thickness, width, length, etc. of the sheet-like material are not particularly limited, but are usually 150 to 1500 μm in thickness.
m, width 500 to 1800 mm, length 100 to 1000 meters. Further, the sheet-like material may be a laminate of a plurality of materials.

FIG. 3 is a plan view showing various aspects of the spacer portion, and the shape of the spacer portion 3 is not limited to being continuously formed in the longitudinal direction of the sheet-like material 2 as shown in FIG.
They may be formed discontinuously as shown in FIGS. 3 (a) and 3 (b). Also, when it is formed continuously, it may be formed not only in a linear shape but in a curved shape [(c) in the figure]. Further, as shown in FIG. 3D, it may be formed into a three-dimensionally curved shape such as a filament.

In the present invention, the spacer portions 3 are provided at least at both ends of the sheet-like article 2 as long as they have a function of providing a space between the sheet-like articles when the sheet-like article 2 is wound. Good. This spacer part 3
May be provided at an intermediate position between both ends, if necessary. Further, it is preferable that the area of the spacer portion 3 has a function as a spacer and is formed as small as possible, and it is preferable that the area is formed to be 10% or less of the total area of the surface of the sheet-shaped material 2.

The thickness of the spacer portion 3 varies depending on the processing conditions such as the concentration of the processing liquid, but is preferably 5 to 1000.
μm, more preferably about 20 to 800 μm. When the thickness is less than 5 μm, when a thin film is used as a sheet material, there may be a portion where the films come into contact with each other. On the other hand, when the thickness exceeds 1000 μm, the diameter of the rolled roll becomes large, and the sheet shape to be treated becomes large. The ratio of the amount of the treatment liquid to the amount of the substance (bath ratio) becomes large, the effect of reducing the amount of the treatment liquid cannot be obtained, and the uniformity of the treatment may deteriorate.

Specific examples of the shape of the spacer portion 3 include a thread shape, a string shape, a tape shape, and a non-woven cloth shape when continuously formed, and a dot shape and a spider shape when discontinuously formed. Examples include a nest shape. As a particularly preferable shape, it is preferable to form so as to draw a periodic curve (for example, a sine curve) because the area of the spacer portion can be formed small and the function as a spacer can be sufficiently exhibited. The shape of these spacer portions 3 may be appropriately selected together with the processing conditions (for example, the concentration of the processing liquid, the temperature, the reaction time, etc.) depending on the desired physical properties of the sheet-like material when the processing described later is performed.

Specifically, the method of forming the spacer portion 3 includes (A) a method of using a separate member (spacer member), and (B) continuous or discontinuous at least at both ends of the sheet-shaped article itself. There is a method for forming a desired shape by applying embossing to the sheet. In the case of (A), the spacer member is fixed to the sheet-like material with an adhesive or an adhesive, and the adhesive or the adhesive is used. There is a method of forming the spacer portion by simply sandwiching and winding it between the sheet-like materials without using it, and any means may be used.

The spacer member (A) may be a thread-shaped, string-shaped, or tape-shaped spacer formed in advance. Specific materials include thread-like materials such as polyester, polyamide, polyacrylonitrile,
Examples thereof include monofilaments, multifilaments and spun yarns of natural fibers or synthetic fibers such as polyimide, cotton, hemp, rayon, polyvinyl alcohol, polyvinylidene chloride, polytetrafluoroethylene, wool, silk and polyvinylidene fluoride.

Further, it is also possible to form the above thread-like, string-like, or tape-like shape by directly applying the following coating materials to the surface of the sheet material and curing it. Polyester, polyamide, polyacrylonitrile, polyimide, ethylene-vinyl acetate copolymer, polycaprolactone, polyurethane, polyvinyl chloride, acrylonitrile-butadiene-styrene copolymer, acrylonitrile-styrene copolymer, polyphenylene sulfide, polyether ether ketone , Melted polyvinylidene fluoride, polyvinylidene chloride, etc. Synthetic resin aqueous solution, water dispersion, organic solvent solution, etc. Isocyanate-containing moisture-curable prepolymer, UV-curable acrylic paint or adhesive, epoxy / polyamine-based or epoxy / Ticol-based adhesive, terminal hydroxyl group-containing telechelic compound (polybutadiene-based, polyisoprene-based) / Polyisocyanate-based adhesive, acrylic-
Urethane adhesive

As the tape-shaped spacer member, any of a cloth adhesive tape, a paper adhesive tape, a film adhesive tape, a metal foil adhesive tape and the like can be used. These adhesive forces do not require particularly strong adhesiveness. In the case of a heat-sensitive adhesive type tape, the tape may be adhered while being subjected to high frequency heating or thermocompression bonding. In the case of discontinuously forming, the above-mentioned coated material can be intermittently discharged from a discharging device, or means such as spraying or melt blowing can be used. Can be easily formed by reciprocating the nozzle of the ejection device in the width direction while feeding (or winding) the sheet. If the above reciprocating movement is performed at a constant speed, the spacer having a non-linear shape is periodically formed. Parts can be formed.

For forming the spacer portion by the embossing of (B), means such as cooling embossing after heating the sbot, heat embossing with a fine width embossing roll, and high frequency embossing are adopted.

Next, the method for making conductive, dyeing, and an alkali-modified sheet of the present invention will be described in detail with reference to the drawings. Although these manufacturing methods of the present invention have different processing liquids and the like, but the processing methods themselves are common, first, these common processing methods will be described. FIG. 4 is an explanatory view showing the outline of an example of the manufacturing method of the present invention. As shown in FIG. 4, according to the manufacturing method of the present invention, the sheet-shaped material 2 is supplied, and after the spacer portion is provided on the surface of the sheet-shaped material 2, the sheet-shaped material 2 is treated in the processing liquid 6 inside the processing tank 7. And is immersed in the treatment liquid 6 for treatment. In this case, the above-mentioned means can be used for the shape and forming method of the spacer portion, and the spacer portion 3 may be adhered or adhered to the sheet-like material 2, heat-welded, or between the sheet-like material 2. It may be simply inserted or embossed without being adhered to.

Further, in the production method of the present invention, as described above, it is possible to treat the sheet-like material roll wound in advance by immersing it in the treatment liquid as it is. In this case, it is preferable to reduce the pressure of the processing tank in order to quickly send the processing liquid to the inside of the roll.

Next, different treatment liquids and the like in the method for producing sheet materials of the present invention will be described below. In the case of the method for producing a conductive sheet-like material, for example, a polyacrylonitrile sheet is used as the sheet to be treated and a copper sulfide method is used as the treatment liquid. Hereinafter, the material and the treatment liquid of the sheet to be treated will be similarly mentioned. Conduction of polyester sheet with polyethyleneimine / copper sulfide, polypropylene, polyvinyl chloride, polystyrene, polycarbonate, polymethylmethacrylate, etc. and electroless plating, polyacrylonitrile, polyester, polypropylene, polyamide, etc. with polypyrrole, polyaniline, polythiophene And the like.

In the case of the method for producing a dyed sheet material, a combination of a polyester sheet material and a disperse dye, a polyamide sheet material and an acid dye, a metal-containing dye and the like can be mentioned.

In the case of the method for producing an alkali-modified sheet material, a sheet material such as polyester or polyimide may be treated with caustic soda. These treatment conditions are the addition of a quaternary ammonium salt type surfactant. Etc. These treatment conditions may be any alkali treatment by changing the alkali concentration, treatment time, temperature and the like.

As shown in FIG. 4, in the manufacturing method of the present invention, a device for forming the spacer portion is provided while the sheet-like material 2 on which the spacer portion 3 has not been formed is supplied and wound in a roll shape. A portion can be formed and immediately rolled into a roll in the processing liquid. Alternatively, a method may be used in which a spacer is once formed and a roll that has been wound is prepared and then rewound in the treatment liquid. Examples of this type of device include a device that supplies liquid resin, such as the discharge device 5, and an embossing device.

In the production method of the present invention, the fluidity of the liquid between the sheet-like materials may be lowered depending on the shape of the spacer portion, but in order to improve the processing efficiency, a short method such as high-frequency dielectric heating is used. Dyeing can be carried out in a short time by heating for a short period of time, or in the case of electroconductivity, by allowing the liquid to stand without stirring, the reaction can be efficiently deposited on the sheet. Especially in the case of a material such as a plastic sheet made of synthetic resin, which has a weak property of penetrating and holding the processing liquid inside, the processing efficiency cannot be improved even if it is moved at a high speed in the dyeing bath or the conductive processing liquid. Therefore, it is preferable that the treatment liquid having a predetermined concentration is allowed to stand in the vicinity of the surface of the sheet-like material for the treatment, because the treatment efficiency can be further improved.

The present invention will be described in more detail below with reference to specific examples. The present invention is not limited to these examples. [Example 1] Polyethylene terephthalate sheet (thickness: 400 μm, width: 900 mm, length: 100 m) was applied to both ends of one side in the width direction with a polyester adhesive (Toyobo: Byron) in toluene / methyl ethyl ketone = 1/1 as a solvent. Dissolve at 40% and apply the solution to form a spacer part with a width of 15 mm and a dry thickness of 0.15 mm.
It was immersed in a 0.4% polyethyleneimine aqueous solution at 0 ° C. for 60 minutes to form a roll having a diameter of 15 cm. After the above roll was washed with water, it was rewound in a state of being immersed in an aqueous solution of copper sulfate pentahydrate 0.25% and sodium thiosulfate pentahydrate 0.17% (20 ° C.), and then the high temperature heating method was used to raise the temperature. The temperature was raised to 45 ° C. at 1 ° C./1 minute, and the state was maintained for 60 minutes. The sheet obtained by thoroughly washing the roll with water and drying had a hue peculiar to copper sulfide (olive green) and had a surface resistance of 6.0 KΩ.

Comparative Example 1 For comparison, the same polyethylene sheet as in Example 1 was treated with an aqueous solution of polyethyleneimine and an aqueous solution of copper sulfate / sodium thiosulfate by the Under-Zicker method. As a result, the retention of the treatment liquid was poor, and the surface resistance of the obtained electroconductive sheet was 20 MΩ, which was not substantially electroconductive.

[Example 2] Polyacrylonitrile sheet (thickness: 300 µm, width: 900 mm x length: 100 m) was applied to both ends in the width direction on one side with a polyurethane adhesive (made by Bayer: Desmocoll 400 as a cross-linking agent manufactured by Sumitomo Chemical Co., Ltd.). : A solution in which 5% by weight of Sumidule N is added) dissolved in a solvent (toluene / methyl ethyl ketone = 1/1) at a concentration of 25% is applied to form a spacer portion having a width of 15 mm and a dry thickness of 0.25 mm. Then, the sheet was dipped in a 0.4% aqueous solution of polyethyleneimine at 20 ° C. for 60 minutes to form a roll having a diameter of 15 cm. The spacer portion was formed by discharging the above adhesive by reciprocating a nozzle having a nozzle diameter of 1 mm in a width of 15 mm at a speed of 5 m / min, applying it in a wavy line, drying and cooling.

Then, the roll was rewound while being immersed in an aqueous solution (20 ° C.) of 0.25% copper sulfate pentahydrate and 0.17% sodium thiosulfate pentahydrate (20 ° C.), and as in Example 1, a high frequency heating method was used. The temperature was raised to 45 ° C. at a temperature rate of 1 ° C./1 minute and held for 60 minutes, and the temperature was raised to 65 ° C. at a temperature rate of 1 ° C./1 minute and held for 60 minutes. When the roll was thoroughly washed with water and dried, it had a hue (olive green) peculiar to copper sulfide and had a surface resistance of 4.5 KΩ.

[Comparative Example 2] A winding roll was formed on the polyacrylonitrile sheet of Example 2 without providing a spacer portion, and a conductive treatment was performed by the Under-Zicker method under the same processing conditions as in Example 2. The product washed with water and dried had a resistance of 20 MΩ or more and was not substantially made conductive.

Example 3 Polyethylene terephthalate sheet (thickness 250 μm, width 500 mm × length 200 m)
Polyester hot-melt adhesive (made by Asahi Kasei Kogyo: Hardek) is discharged on both sides of one side in the width direction at intervals of 5 mm to a width of 3 mm and a length of 5 mm to form a spacer portion having a thickness of 300 μm. A winding roll was formed. The above roll was immersed in the following dyeing solution, dyed at 45 ° C. for 30 minutes and 100 ° C. for 60 minutes by a high frequency heating method, washed with water, then reduced with the following reducing wash solution for 70 ° C. for 10 minutes, washed with water and dried. A polyethylene terephthalate sheet having a bright blue color was obtained.

Composition of dyeing solution : Kayaron Polyester Blue 1.12 g / liter-Adjust pH to 4-5 with acetic acid / sodium acetate-Chlorobenzol carrier 30 g / liter

Composition of the reducing cleaning liquid : Hydrosulfite 1.5 g / l Soda ash 1.5 g / l Soaping agent (surfactant) 2 g / l

Example 4 A para-polyimide sheet (thickness: 300 μm, width: 500 mm × length: 200 m) has a two-layer structure of 12 mm width (0.1 mm polyester base material layer, 0 1 mm of the ethylene-vinyl acetate copolymer adhesive layer) heat-sensitive tape was used for 150 with a heating roll.
A spacer portion was formed by pressure bonding at a temperature of ℃, rolled into a roll in a conductive treatment liquid (liquid temperature 12 ℃) having the following composition, and left for 3 hours. The surface resistance of the sheet obtained after washing with water is 7
It was × 10 ⁴ Ω.

Conductive treatment liquid composition -pyrrole 9 x 10 ^-3 mol / liter (0.060%) ferric chloride 2.25 x 10 ^-2 mol / liter (0.360%)

[Comparative Example 3] The same electrical conductivity treatment as in Example 4 was performed without providing spacer portions at both ends of the para polyimide sheet used in Example 4. Although the obtained sheet showed a slight change in hue, no substantial conductivity was obtained.

Example 5 Nylon 6,6 sheet (thickness 3
(00 μm, width 500 mm x length 200 m), a polyamide hot melt adhesive with a width of 8 mm and a thickness of 0.5 mm was melted and discharged to both ends of one side in the width direction to form spacers, which were wound into a roll in the following treatment liquid. , Using high frequency heating method 3
The temperature was raised from 0 ° C to 98 ° C and maintained for 60 minutes. The obtained sheet had a bright green color.

Composition of dyeing solution・ Kayanol Myrin Green 5GW 0.684 g / liter ・ Acetic acid 2.5 g / liter ・ Nonion-based leveling agent 0.5 g / liter ・ Antifoaming agent 0.2 g / liter

Example 6 Polyethylene terephthalate film (thickness 200 μm, width 1000 mm × length 500)
Polyamide-based hot melt adhesive is discontinuously applied in a particulate form at intervals of 5 mm on both ends in the width direction of one side to form a spacer portion having a thickness of 100 μm, and the sheet is made of 10% sodium hydroxide, 50 at a speed of 15 m / min in an aqueous solution containing 0.5% cationic surfactant at 20 ° C.
After being wound up for 0 meter, the state of 90 to 95 ° C. was maintained for 20 minutes by the microwave heating method after the completion of the winding. The roll was washed with water, washed with an aqueous solution of 0.5 g / liter of acetic acid, further washed with water, and then air-dried at 100 to 110 ° C. Acrylic emulsion (Poncoat: Dainippon Ink and Chemicals, Inc.) on the obtained polyethylene terephthalate film
When it was applied, the adhesiveness was extremely good.

[Comparative Example 4] The polyethylene terephthalate film used in Example 6 was treated by a method of continuously dipping it in a 10% aqueous sodium hydroxide solution (90 to 95 ° C). Although the adhesiveness was high and the adhesiveness was good, the alkalinity gradually decreased as sodium terephthalate and ethylene glycol were produced in the aqueous solution with the progress of treatment,
Adhesiveness decreased in proportion to it.

[0049]

As described above, in the roll of the sheet material of the present invention, the sheets are separated from each other to form the voids. Therefore, the treatment liquid passes through the voids and enters the inside of the sheet material. Therefore, even if the treatment is carried out in the roll state, there is no possibility that the sheet-like materials inside the rolls overlap each other and the treatment liquid does not permeate.

The roll of the sheet material of the present invention, such as the electroconductive sheet material, the dyed sheet material, and the alkali-modified sheet material, is chemically treated on the surface or / the surface and the inside. It can be optimally used in the method for producing a sheet-like material. Furthermore, the roll of these treated sheet-like materials is not affected by scratches on the surface due to the contact between the sheet-like materials wound into a roll due to the voids formed by the spacers. It has the effect of maintaining a good surface condition.

The method for producing the electrically conductive sheet, dyed sheet and alkali-modified sheet of the present invention adopts the above-mentioned constitution to make a sheet having poor water absorption due to non-porosity into a roll. It can be easily processed in the state of being rolled up, and the amount of processing liquid for processing the sheet-like material is the amount necessary for the roll to be immersed. Compared with the method of performing the treatment in the state where the film or sheet-like material is spread, the treatment can be performed with a very small amount of treatment liquid, and the manufacturing cost can be reduced.

Further, since the treatment liquid easily penetrates into the sheet-like material located inside the roll through uniform voids, the surface or / and the surface of the sheet-like material is uniformly treated, and The effect is that a dyed sheet, a conductive treatment sheet, and an alkali-modified treatment sheet having even physical properties can be obtained.

Further, in the method for producing a conductive sheet of the present invention, compared to the case where a conventional porous non-woven fabric or the like is sandwiched between sheet-like materials for treatment, the present invention has a spacer portion over the entire surface of the sheet-like material. Since it is not provided, there is no risk of uneven treatment due to non-uniformity of fiber density as in the case of using a non-woven fabric, it is possible to perform a more uniform treatment, and the treatment liquid is a spacer. Even if it is adsorbed on the substrate, a small amount of loss is sufficient, so that an expensive processing liquid is not wasted and the manufacturing cost can be reduced.

[Brief description of drawings]

FIG. 1 is an external perspective view showing an example of a roll of the sheet material of the present invention.

FIG. 2 is a vertical sectional view taken along the line AA in FIG.

FIG. 3 is a plan view showing an aspect of a spacer portion.

FIG. 4 is an explanatory view showing the outline of an example of a method for producing a sheet material of the present invention.

[Explanation of symbols]

 1 Roll of Sheet-like Material 2 Sheet-like Material 3 Spacer Part 4 Void Area 5 Discharge Device 6 Processing Liquid 7 Processing Tank

Claims (5)

[Claims] 1. A spacer portion is formed continuously or discontinuously in the length direction of at least both end portions in the width direction of the surface of the sheet-like material, and voids are formed by the spacer portion between the sheet-like materials wound in a roll shape. A roll of sheet-like material characterized by being processed. 2. The roll of sheet-like material according to claim 1, wherein the surface or / and the inside of the sheet-like material is chemically treated by being immersed in a treatment liquid. 3. A sheet-like material having a spacer portion continuously or discontinuously provided in at least both end portions in the width direction of the surface in a longitudinal direction, and after winding the sheet-like material in a roll shape in the longitudinal direction, the sheet-like material roll is electrically conductive. A method for producing a conductive sheet-like article, which comprises immersing in a chemical treatment liquid to make it conductive, or winding the roll in a conductive treatment liquid in a roll shape to make it conductive. 4. A roll of a sheet-shaped material is dyed after winding a sheet-shaped material having a spacer portion continuously or discontinuously in the lengthwise direction of at least both end portions in the width direction of the surface and winding the roll-shaped sheet-shaped material in the lengthwise direction. A method for producing a dyed sheet, which comprises immersing in a treatment solution for dyeing, or winding the dye in a lengthwise direction in a dyeing solution for dyeing. 5. A sheet-shaped material having a spacer portion continuously or discontinuously provided in at least both end portions in the width direction of the surface and continuously or discontinuously wound into a roll shape in the length direction, and then the roll of the sheet-shaped material is alkali It is characterized in that it is subjected to alkali treatment by immersing it in a treatment liquid, or by rolling it in a lengthwise direction in an alkali treatment liquid and performing alkali treatment to modify the surface of the sheet-like material. A method for producing an alkali-modified sheet material.