JP2018086824A - Inkjet printing material, laminate roll, and printed matter - Google Patents

Abstract

An inkjet printing material that prevents blocking and peeling charging when the inkjet printing material is delivered. Moreover, the laminated body roll using this and a printed matter are provided.
A release film 10 having a release treatment surface 10A on one surface side, an adhesive layer 20 laminated on the release treatment surface 10A, and a base film 30 laminated on the adhesive layer 20; And an ink receiving layer 40 laminated on the base film 30, the ink receiving layer 40 containing modified cellulose, and the other surface side of the release film 10 is subjected to an anti-slip antistatic treatment. Printing material 1.
[Selection] Figure 1

Description

  The present invention relates to an inkjet printing material, a laminate roll using the same, and a printed material.

  The ink jet recording method is a method in which a print image is formed by spraying ink on a recording material as fine droplets from a nozzle. The ink jet recording system is widely used because it has advantages such as low mechanical noise during printing, full color printing, and low running costs associated with printing.

  In general, an inkjet printing material used for printing by an inkjet recording method includes a base material and an ink receiving layer laminated on the base material. Some ink-receiving layers of ink-jet printing materials contain modified cellulose.

  For example, Patent Document 1 discloses that an ink receiving material having an ink receiving layer formed on a base material (that is, an ink jet printing material) is superior in scratch resistance and curl resistance. A polymer comprising cellulose acetate butyrate (a component) containing 3 to 29.5% by mass of acetyl groups, 17 to 50% by mass of butanoyl groups and 1 to 3% by mass of hydroxyl groups, and (meth) acrylate Alternatively, an ink-jet printing material comprising the copolymer (component b) is described.

JP 2004-058392 A

  However, the inkjet printing material containing the modified cellulose in the ink receiving layer has a property of being easily charged, and when the inkjet printing material is unwound from the roll body, it is peeled and charged, and the charged inkjet printing material is applied to the head portion. Since the ink is conveyed, there is a problem that the ink is induced by static electricity and is not ejected to an accurate position. Further, since the transparent ink receiving layer has a smooth surface, it has a property of being easily blocked, and there is a problem that the ink-jet printing material cannot be fed out from the roll body.

  Accordingly, an object of the present invention is to provide an ink-jet printing material with reduced peeling charging and blocking when the ink-jet printing material is fed to the head portion of the ink-jet printer. Moreover, an object of this invention is to provide the laminated body roll using this inkjet printing material, and printed matter.

The present invention is as follows.
(1) A release film having a release treatment surface on one surface side, an adhesive layer laminated on the release treatment surface, a base film laminated on the adhesive layer, and the base film An ink-jet printing material comprising: a laminated ink-receiving layer, wherein the ink-receiving layer contains modified cellulose, and the other surface side of the release film is subjected to an anti-slip antistatic treatment.
(2) The inkjet printing material according to (1), wherein an easy-slip antistatic treatment layer is formed on the other surface side of the release film.
(3) The inkjet printing material according to (2), wherein the easy-slip antistatic treatment layer contains a filler and an antistatic agent.
(4) The ink jet printing material according to any one of (1) to (3), wherein the ink receiving layer contains a plasticizer.
(5) The inkjet printing material according to any one of (1) to (4), wherein the surface of the base film on the pressure-sensitive adhesive layer side is subjected to an easy-slip adhesion treatment.
(6) A laminate roll obtained by winding the inkjet printing material according to any one of (1) to (5) around a core material.
(7) Printed matter obtained by inkjet printing on the ink receiving layer of the inkjet printing material according to any one of (1) to (5).

  ADVANTAGE OF THE INVENTION According to this invention, when sending an inkjet printing material, the inkjet printing material by which peeling electrification and blocking were prevented can be provided. Moreover, this invention can provide the laminated body roll using this inkjet printing material, and printed matter.

It is sectional drawing which shows an example of the inkjet printing material which concerns on this invention. It is a perspective view which shows an example of the laminated body roll which concerns on this invention. It is sectional drawing which shows the laminated body roll of FIG.

[Inkjet printing materials]
FIG. 1 is a cross-sectional view showing an example of an inkjet printing material according to the present invention.
In the present embodiment, the present invention includes a release film 10 having a release treatment surface 10A on one surface side, a pressure-sensitive adhesive layer 20 laminated on the release treatment surface 10A, and a laminate on the pressure-sensitive adhesive layer 20. A base film 30; and an ink receiving layer 40 laminated on the base film 30; the ink receiving layer 40 contains modified cellulose; and the other surface side 10B of the release film 10 has anti-slip charging prevention. An inkjet printing material 1 being processed is provided.

<Ink receiving layer>
The ink receiving layer in the inkjet printing material contains modified cellulose, preferably contains a plasticizer, and preferably contains a silane coupling agent.

(Modified cellulose)
Modified cellulose is one in which at least a part of the hydroxyl groups of cellulose molecules are substituted with other groups. Examples of the substituent include alkyl groups such as methyl group and ethyl group; hydroxyalkyl groups such as hydroxyethyl group and hydroxypropyl group; acyl groups such as acetyl group, propionyl group and butyryl group.

  More specific examples of the modified cellulose include cellulose acetate, cellulose acetate propionate, and cellulose acetate butyrate.

  From the viewpoint of ink permeability of the substrate film with an ink receiving layer and the inkjet printing material, the content of acetyl groups in the modified cellulose is preferably 3 to 29.5% by mass, and preferably 4 to 20% by mass. More preferably, it is more preferably 5 to 15% by mass, and the content of the butyryl group of the modified cellulose is preferably 17 to 50% by mass, more preferably 30 to 45% by mass, More preferably, the content is 35 to 40% by mass, and the hydroxyl group content of the modified cellulose is preferably 0.5 to 3% by mass, more preferably 1 to 2% by mass, and 1.2 to More preferably, it is 1.8 mass%.

  Further, from the viewpoint of further reducing the odor generation of the inkjet printing material, the content of the butyryl group of the modified cellulose is preferably 10% by mass or less, more preferably 5% by mass or less, and 3% by mass. % Or less is more preferable, and 0% by mass is particularly preferable. As the content of the butyryl group of the modified cellulose contained in the ink receiving layer is lower, the odor generation of the inkjet printing material tends to be further reduced. From the viewpoint of lowering the content of butyryl groups in the modified cellulose, the modified cellulose may be cellulose acetate or cellulose acetate propionate.

  The content of the butyryl group of the modified cellulose can be measured according to, for example, ASTM D817-12. Or you may measure by a liquid chromatography, a gas chromatography, etc., for example. Here, an example of a method for measuring the content of the butyryl group of the modified cellulose using liquid chromatography will be described. First, the acetyl group and butyryl group of the modified cellulose are released as compounds corresponding to the respective substituents (for example, acetic acid and butanoic acid), and then measured by liquid chromatography or the like. Measure the molar ratio. Separately from this, for example, the content of the acetyl group of the modified cellulose is measured according to ASTM D817-12. Subsequently, the content of the butyryl group of the modified cellulose is calculated based on the molar ratio of the acetyl group and the butyryl group measured by the method described above and the content of the acetyl group. Similarly, the propionyl group content of the modified cellulose can also be measured.

  The number average molecular weight of the modified cellulose may be, for example, 10,000 to 100,000, for example, 10,000 to 90,000, for example, 10,000 to 80,000. Here, the “number average molecular weight” is a value in terms of polystyrene measured by a gel permeation chromatography (GPC) method. Modified cellulose can be used singly or in combination.

  The content (modified solid content) of the modified cellulose in the ink receiving layer may be, for example, 50 parts by mass or more, for example, 70 parts by mass or more, for example, 80 parts by mass, per 100 parts by mass of the ink receiving layer. It may be greater than or equal to parts by mass.

(Plasticizer)
The ink-receiving layer in the ink-jet printing material has improved ink permeability, thereby improving the drying and fixing properties of the ink and preventing cracks in the printed image. From the viewpoint of reducing curling properties of the material film and the inkjet printing material, it is preferable to contain a plasticizer.

  That is, the plasticizer in the ink receiving layer contributes to curling properties of the base film with the ink receiving layer and the inkjet printing material in addition to the conventionally known effects such as ink permeability and fixing property. The substrate film with an ink-receiving layer and the ink-jet printing material having an ink-receiving layer containing a modified cellulose are cooled to room temperature from the heat-drying step after the ink-receiving layer is applied. Compared to the film, it contracted more greatly, and therefore it had the property of being easily curled. The inclusion of a plasticizer in the ink receiving layer prevented the shrinkage of the ink receiving layer due to the softening action of the plasticizer, and as a result, the curl properties of the base film with the ink receiving layer and the inkjet printing material were reduced. It is done.

  Regarding the curl properties of the substrate film with an ink receiving layer, the curl heights at the four corners of the sample of the substrate film with an ink receiving layer cut to 300 mm × 300 mm may be 75 mm or less, and 40 mm or less. Is preferably 35 mm or less, particularly preferably 30 mm or less. Details of the measurement / evaluation method will be described later.

  Regarding the curling properties of the inkjet printing material, the curl heights at the four corners of the sample of the inkjet printing material cut to 100 mm × 100 mm may be 60 mm or less, preferably 35 mm or less, preferably 25 mm or less. It is more preferable that it is, and it is especially preferable that it is 15 mm or less. Details of the measurement / evaluation method will be described later.

  Curling of the base film with an ink receiving layer is reduced during the manufacturing process, particularly in the step of laminating the base film side of the base film with an ink receiving layer and the pressure-sensitive adhesive layer. Can be prevented. In addition, in the process of printing on the inkjet printing material, it is possible to prevent a problem that the inkjet head collides with both ends of the curled inkjet printing material, that is, a so-called head crash.

  As content of a plasticizer, it is preferable that it is the range of 5-80 mass parts per 100 mass parts of said modified cellulose, It is more preferable that it is the range of 8-40 mass parts, The range of 10-20 mass parts It is particularly preferred that If the plasticizer content is less than the lower limit, the above effects are small, and if the plasticizer content is more than the upper limit, bleeding may occur.

The type of plasticizer is not particularly limited, but phthalate ester plasticizer; phosphate ester plasticizer; adipate ester plasticizer; sebacate ester plasticizer; dibenzoic acid diethylene glycol, dipropylene glycol dibenzoate, etc. Glycol derivative plasticizers of glycerol; glycerol derivative plasticizers such as glycerol triacetate and glycerol tributyrate; epoxy derivative plasticizers such as epoxidized soybean oil; and the like.
Specific examples of phthalate plasticizers include dibutyl phthalate, dihexyl phthalate, di-2-ethylhexyl phthalate, diisononyl phthalate, diisothecyl phthalate, and the like; butyl benzyl phthalate, myristyl phthalate Examples thereof include alkylbenzyl phthalate plasticizers such as benzyl; alkylaryl phthalate plasticizers; dibenzyl phthalate plasticizers; diaryl phthalate plasticizers.
Specific examples of the phosphate ester plasticizer include triaryl phosphate plasticizers such as tricresyl phosphate; trialkyl phosphate plasticizers such as trioctyl phosphate; alkylaryl phosphate plasticizers.

Of these plasticizers, phthalate plasticizers are preferred from the viewpoints of being inexpensive and easily available industrially, workability, low toxicity, and the like. Of these, diisodecyl phthalate, diisononyl phthalate and di-2-ethylhexyl phthalate are preferable. Furthermore, in the case of high-speed printing, since ink permeates quickly, diisodecyl phthalate (hereinafter, sometimes abbreviated as DIDP) is preferable.
These plasticizers may be used individually by 1 type, and may be used in combination of 2 or more type.

(Silane coupling agent)
The ink receiving layer in the ink jet printing material preferably contains a silane coupling agent from the viewpoint of improving the adhesion to the substrate film. In addition, when the ink receiving layer contains a silane coupling agent and the surface of the base film on the ink receiving layer side is subjected to an easy adhesion treatment as described later, a synergistic effect is exhibited and the adhesiveness is improved. More improved.
The silane coupling agent contained in the ink receiving layer in the inkjet printing material is selected from the group consisting of a silane coupling agent having an amino group, a silane coupling agent having an epoxy group, and a silane coupling agent having a vinyl group. At least one compound can be used.

  By including the silane coupling agent in the ink receiving layer of the inkjet printing material, the adhesion of the ink receiving layer to the base film can be improved, and the transparency of the base film is not impaired. be able to. The silane coupling agent to be contained in the ink receiving layer is not particularly limited. For example, a silane coupling agent having an amino group, a silane coupling agent having an epoxy group, a silane coupling agent having a vinyl group, and a silane having a methacryl group. Examples include a coupling agent, a silane coupling agent having a mercapto group, a silane coupling agent having a methacryloxy group, and a silane coupling agent having a halogen. Among these, a silane coupling agent having an amino group, an silane coupling agent having an epoxy group, and a silane coupling agent having a vinyl group, which are highly effective in enhancing the adhesion of the ink receiving layer to the base film, are preferable. A silane coupling agent having an amino group can be particularly preferably used.

  Examples of the silane coupling agent having an amino group include 3-aminopropyltriethoxysilane, 3-aminopropyltrimethoxysilane, 3- (2-aminoethyl) aminopropyltrimethoxysilane, and 3- (2-aminoethyl). ) Aminopropylmethyldimethoxysilane, 3- (2-aminoethyl) aminopropyltriethoxysilane, 3-triethoxysilyl-N- (1,3-dimethylbutylidene) propylamine, N-phenyl-3-aminopropyltri Examples include methoxysilane, N-vinylbenzyl-2-aminoethyl-3-aminopropyltrimethoxysilane hydrochloride, and the like. Among these, 3- (2-aminoethyl) aminopropyltrimethoxysilane can be particularly preferably used because it has a large effect of enhancing the adhesion between the ink receiving layer and the base film.

  Examples of the silane coupling agent having an epoxy group include 3-glycidoxypropyltrimethoxysilane, 3-glycidoxypropylmethyldimethoxysilane, 2- (3,4-epoxycyclohexyl) ethyltrimethoxysilane, 3- Examples thereof include glycidoxypropyltriethoxysilane. Among these, 3-glycidoxypropyltrimethoxysilane can be particularly preferably used because it has a large effect of enhancing the adhesion between the ink receiving layer and the substrate film.

  Examples of the silane coupling agent having a vinyl group include vinyltrimethoxysilane, vinyltriethoxysilane, vinyltrichlorosilane, vinyltriacetoxysilane, and vinyltris (2-methoxyethoxy) silane. Among these, vinyltriacetoxysilane can be particularly preferably used because it has a great effect of enhancing the adhesion between the ink receiving layer and the base film.

  In this invention, it is preferable that content of the silane coupling agent in an ink receiving layer is 0.2-10 mass parts with respect to 100 mass parts of said modified cellulose, and is 0.5-5 mass parts. It is more preferable, and it is still more preferable that it is 0.7-2 mass parts. When the content of the silane coupling agent is not less than the above lower limit, the adhesion of the ink receiving layer to the substrate film can be enhanced. Further, when the content of the silane coupling agent is not more than the above upper limit value, the ink absorptivity and the sharpness of the printed image can be improved.

  In the ink-jet printing material of the present embodiment, the ink receiving layer is prepared by, for example, using a composition for forming an ink receiving layer obtained by dissolving or suspending modified cellulose and other components as necessary in an appropriate solvent. It can form by apply | coating on a material film and removing a solvent.

(solvent)
The solvent of the ink receiving layer forming composition is not particularly limited as long as it can uniformly dissolve or disperse the modified cellulose and other components as required, and can be easily removed. , Ethanol, a mixed solvent of toluene and ethanol, a mixed solvent of toluene and methyl ethyl ketone, a mixed solvent of methyl ethyl ketone and dimethylformamide, ethyl acetate, butyl acetate, cyclohexanone, and the like. Among them, a mixed solvent of toluene and ethanol is preferable because the solubility of the ink receiving layer forming composition is high, the solution viscosity is low, and the affinity of the base film for the easy-adhesion layer is excellent.

  The concentration of the modified cellulose in the ink receiving layer forming composition may be, for example, about 15 to 30% by mass. Although the removal method in particular of a solvent is not restrict | limited, For example, volatilizing a solvent by heating is mentioned. The heating temperature may be, for example, 70 to 150 ° C., and the heating time may be, for example, 1 to 5 minutes.

  Examples of other components include those usually used as components of the ink receiving layer of the inkjet printing material, such as a surface conditioner, an ultraviolet absorber, a light stabilizer, and a colorant. Moreover, the antistatic agent may be contained in the range which does not impair the printing performance of an inkjet printing material.

  Application of the ink receiving layer forming composition may be performed by a known method, such as an air knife coater, blade coater, bar coater, gravure coater, roll coater, roll knife coater, curtain coater, die coater, knife coater, Examples include a method using various coaters such as a screen coater, a Meyer bar coater, a kiss coater, an air doctor coater, a rod coater, a squeeze coater, a reverse roll coater, a transfer roll coater, a spray coater, and a slot orifice coater.

  The thickness of the ink receiving layer may be, for example, 5 to 50 μm, such as 10 to 40 μm, such as 20 to 30 μm, after removing the solvent (after drying).

<Base film>
In the inkjet printing material of the present embodiment, the base film includes a polyester film such as polyethylene terephthalate, a polyolefin film such as polyethylene and polypropylene, a polyvinyl chloride film, a polycarbonate film, a (meth) acrylic resin film, a polystyrene film, and acetic acid. Resin films, such as a cellulose film, are mentioned. In this specification, (meth) acrylic resin means acrylic resin and methacrylic resin, and the same applies hereinafter.

  The surface of the base film on the ink receiving layer side is preferably subjected to easy adhesion treatment. Since the surface of the base film on the ink receiving layer side is subjected to easy adhesion treatment, the adhesion between the base film and the ink receiving layer is improved.

The surface of the base film on the side of the pressure-sensitive adhesive layer is preferably subjected to an easy-slip adhesive treatment.
In the step of laminating the pressure-sensitive adhesive layer after forming the ink-receiving layer on the base film and winding it into a roll form, the surface on the side of the pressure-sensitive adhesive layer of the base film is subjected to easy-slip treatment. When the base film with the receiving layer is fed out from the roll form, it is possible to prevent a problem that the ink receiving layer is blocked by the base film and cannot be fed out. Examples of the easy slip treatment include a method of roughening the surface of the base film on the pressure-sensitive adhesive layer side.

  The arithmetic average roughness (Ra) of the surface of the base film on the side of the pressure-sensitive adhesive layer, measured in accordance with JIS B 0601-1994, is preferably 0.1 to 100 nm, and preferably 2 to 50 nm. More preferably, it is particularly preferably 3 to 30 nm. Examples of the means for setting the Ra on the pressure-sensitive adhesive layer side of the base film to 0.1 to 100 nm include causing the base film to contain particles such as silica particles, calcium carbonate particles, and barium sulfate particles.

  From the viewpoint of preventing blocking, the coefficient of static friction between the surface of the ink receiving layer and the surface of the base film on the pressure-sensitive adhesive layer side of the base film with the ink receiving layer, measured in accordance with JIS K 7125, is 2.0 or less, more preferably 1.5 or less, and particularly preferably 1.0 or less.

  Since the surface of the base film on the side of the pressure-sensitive adhesive layer is subjected to an easy adhesion treatment, the adhesiveness between the pressure-sensitive adhesive layer and the base film is improved.

  As the polyethylene terephthalate film that has been subjected to the easy-to-slip adhesion treatment, Diafoil T600E (trade name, manufactured by Mitsubishi Plastics) or Cosmo Shine A4300 (trade name, manufactured by Toyobo Co., Ltd.) can be used.

  The substrate film may be transparent. When a transparent material is used as the base film, the inkjet printing material of the present embodiment is suitable for use as, for example, an OHP film, a display for viewing a printed image from the back side of the printing surface, a window display, or the like. Can be used. The thickness in particular of a base film is not restrict | limited, It can set suitably, for example, 15-300 micrometers may be sufficient, for example, 30-200 micrometers may be sufficient.

  As an inkjet printing material with a transparent base film, for example, a base film with an ink receiving layer having a haze of 10% or less measured according to JIS K7136: 2000 can be mentioned. The haze of the base film with an ink receiving layer may be measured in a state where the release film of the ink jet printing material is peeled off, but the preferred range is the same as that measured for the base film with an ink receiving layer. The haze of the inkjet printing material can be appropriately set according to the application. For example, when it is used for an application such as an OHP film or a window display, it is preferable that the transparency is high. 5% or less is preferable, for example, 3% or less is more preferable, for example, 1% or less is particularly preferable.

<Adhesive layer>
There is no restriction | limiting in particular as an adhesive which comprises an adhesive layer, For example, an acrylic adhesive, a rubber adhesive, a silicone adhesive, a polyurethane adhesive, etc. can be used.

  When the inkjet printing material is used for a window display or the like, a pressure-sensitive adhesive layer formed from an acrylic pressure-sensitive adhesive may be used from the viewpoint of weather resistance and the like. Moreover, when it is requested | required that it peels from a to-be-adhered body, the adhesive layer formed from the silicone type adhesive or the polyurethane-type adhesive may be sufficient.

  Examples of the acrylic pressure-sensitive adhesive include, as a main component, an acrylic ester homopolymer, a copolymer containing two or more acrylic ester units, and a copolymer of an acrylic ester and another functional monomer. What contains at least 1 sort (s) chosen from the inside is used. Examples of the acrylate include butyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, dodecyl (meth) acrylate, and the like. Examples of functional monomers include hydroxyl group-containing monomers such as hydroxyethyl (meth) acrylate and hydroxypropyl (meth) acrylate, and amide groups such as (meth) acrylamide and dimethyl (meth) acrylamide. Monomers, carboxylic acid group-containing monomers such as (meth) acrylic acid, and the like.

In the adhesive layer, other components such as a crosslinking agent, a tackifier, an antioxidant, an ultraviolet absorber, a light stabilizer, a softener, a silane coupling agent, and a filler are blended as necessary. Also good. These may be used alone or in combination of two or more.
In the pressure-sensitive adhesive layer, a pressure-sensitive adhesive containing a pigment can be used as desired for the purpose of improving the hiding power for the printed image.
The thickness of the pressure-sensitive adhesive layer may be, for example, 5 to 100 μm, for example, 10 to 50 μm.

<Peeling film>
The release film in the inkjet printing material is not particularly limited as long as it has a release treatment surface on one surface side and the other surface side is subjected to an anti-slip antistatic treatment, and is used in the field of adhesive films. You can select and use them. As the anti-skid antistatic treatment, it is only necessary to have unevenness for improving the easy-slip property and to provide an antistatic agent at least in the vicinity thereof. As the release film, a release treatment layer may be provided on one surface side of the film base, and the release base such as a paper base or a film base may contain a filler and an antistatic agent. It is preferable that a release layer is provided on one surface side of a release substrate such as a paper substrate or a film substrate, and an easy-slip antistatic treatment layer is provided on the other surface side. For example, as a release film in which a release treatment release layer is provided on one surface side of a polyester base and an easy-slip antistatic treatment layer is provided on the other surface side, MRF (trade name, manufactured by Mitsubishi Resin Co., Ltd.) PET-O1ASBU (trade name, manufactured by Mitsui Chemicals, Inc.) can be used.

The surface resistivity of the surface of the release film that has been subjected to anti-slipping antistatic treatment is preferably 1 × 10 ⁴ to 1 × 10 ¹⁴ Ω / □ in an environment of 23 ° C. and 50% RH, and preferably 1 × 10 ⁶ to 1 It is more preferably × 10 ¹² Ω / □, and particularly preferably 1 × 10 ⁸ to 1 × 10 ¹⁰ Ω / □.

  The arithmetic average roughness (Ra) of the surface of the release film that has been subjected to anti-slip antistatic treatment, measured in accordance with JIS B 0601-1994, is preferably 0.1 to 100 nm, and preferably 2 to 50 nm. More preferably, it is particularly preferably 3 to 30 nm.

  The coefficient of static friction between the surface of the ink receiving layer and the surface of the release film subjected to the anti-slip antistatic treatment of the inkjet printing material, measured in accordance with JIS K 7125, is 2.0 or less. Is more preferable, 1.5 or less is more preferable, and 1.0 or less is particularly preferable.

  When the surface opposite to the release treatment surface of the release film is subjected to easy slip treatment, the ink receiving layer and the ink receiving layer are fed out from the roll body of the ink jet print material in order to send the ink jet print material to the ink jet head. It can prevent that blocking generate | occur | produces between peeling films. In addition, the surface opposite to the release-treated surface of the release film is subjected to antistatic treatment, thereby preventing the occurrence of release charge in the ink receiving layer when the ink-jet recording material is fed out of the roll. it can.

Examples of the film substrate include various resin films such as polyethylene terephthalate, polybutylene terephthalate, polyethylene, polypropylene, and polyacrylate.
Examples of the release treatment release layer on the one surface side of the release film include those containing release agents such as silicone, long-chain alkyl resins, and fluorine resins. Examples of the slippery antistatic treatment layer on the other surface side of the release film include those containing a filler and an antistatic agent.
Although there is no restriction | limiting in particular about the thickness of a peeling film, Usually, it is about 20-150 micrometers.

[Laminate roll]
FIG. 2 is a perspective view showing an example of a laminate roll according to the present invention. FIG. 3 is a cross-sectional view showing the laminate roll.
In the present embodiment, the present invention provides a laminate roll 2 in which the inkjet printing material 1 is wound around a core material 60.
When the inkjet printing material is sent to an inkjet printer, the inkjet printing material can be used in the form of a sheet, but it can also be used in the form of a laminate roll wound around a core material. is there.

  By forming the anti-slip antistatic treatment layer on the other surface side of the release film of the inkjet printing material, it is possible to prevent double feeding of the inkjet printing material even in the use of a single-wafer mode.

  In addition, since the ink receiving layer includes a plasticizer in the ink receiving layer, curling at both ends is reduced, the ink jet head collides with both curled ends, and the ink jet head fails, It is possible to prevent the conveyance of the inkjet printing material from being stopped.

[Printed matter]
In the present embodiment, the present invention provides a printed matter obtained by inkjet printing on the ink receiving layer of the inkjet printing material described above. The printed matter of the present embodiment has a printing performance (ink absorption amount) equivalent to that of a conventional inkjet printing material containing a modified cellulose in the ink receiving layer, and the other surface side of the release film has an anti-slip antistatic treatment. Therefore, blocking and peeling electrification can be prevented.

  The ink-jet ink used for printing on the printed material of the present embodiment may be an ultraviolet curable ink or a solvent-type ink, but is a solvent-type ink from the viewpoint of transparency of the printed portion. Is preferred.

  EXAMPLES Next, although an Example is shown and this invention is demonstrated further in detail, this invention is not limited to a following example.

[Measurement and evaluation method]
In Examples and Comparative Examples, the inkjet printing material was evaluated by the following method.

(Measurement method of arithmetic average roughness (Ra))
The arithmetic average roughness (Ra) of the surface of the base film on the side of the pressure-sensitive adhesive layer and the surface opposite to the release-treated surface of the release film is determined according to JIS B0601, using a surface shape measuring device (Wyko NT1100 manufactured by Veeco). And measured with an objective lens 50 times.

(Measurement method of static friction coefficient of base film with ink receiving layer)
The static friction coefficient was measured in accordance with the plastic film and sheet-friction coefficient test method of JIS K 7125. Under the environment of 23 ° C. and 50% RH, the two base film with ink receiving layer were overlapped with the base film side facing down, and adjusted for 24 hours under a load of 1 kg / 40 cm ² . The static friction coefficient (μ) between the surface of the ink receiving layer and the surface of the substrate film is moved by moving the upper substrate film with the ink receiving layer at a test speed of 100 mm / min while applying a load of 1 kg / 40 cm ^2. _S ) was measured.

(Method for measuring the coefficient of static friction of inkjet printing materials)
The static friction coefficient was measured in accordance with the plastic film and sheet-friction coefficient test method of JIS K 7125. Under 23 ° C. 50% RH environment, the two ink-jet printed materials, after adjusting for 24 hours at each state release film side overlapped so that the lower and applying a load of ^{1kg / 40cm 2, 1kg / 40cm} 2 The static friction between the surface of the ink-receiving layer and the surface opposite to the release-treated surface of the release film by moving the upper substrate film with the ink-receiving layer at a test speed of 100 mm / min while applying the load of The coefficient (μS) was measured.

(Measurement method of surface resistivity)
The surface resistivity of the surface of the release film that has been subjected to anti-slip antistatic treatment is 23 ° C. and 50% RH using a resistivity meter (manufactured by Advantest Corporation, R8252 digital electrometer) according to JIS K6911. Measured below.

(Method for measuring curl height of substrate film with ink receiving layer)
Place the sample of the base film with an ink receiving layer cut to 300 mm x 300 mm on a horizontal desk under an environment of 23 ° C and 50% RH so that the ink receiving layer is on the upper side and the base film is on the lower side. The four corners of this sample were evaluated by measuring the curl height (that is, the height rising from the horizontal surface of the desk). And when at least one corner curls 90 ° or more, this is clearly indicated.

(Curl height measurement method for inkjet printing materials)
In a 23 ° C., 50% RH environment, place a sample of an inkjet printing material cut to 100 mm × 100 mm on a horizontal desk with the ink receiving layer on the top and the release film on the bottom. For the four corners, the curl height (that is, the height rising from the horizontal plane of the desk) was measured and evaluated. And when at least one corner curls 90 ° or more, this is clearly indicated.

(Measurement of haze)
The haze (%) was measured using the substrate films with ink receiving layers of Examples and Comparative Examples as samples. Haze was measured according to JIS K7136: 2000 using a haze meter (Nippon Denshoku Industries Co., Ltd., NDH-2000).

[Manufacture of inkjet printing materials]
Example 1
100 parts by mass of cellulose acetate butyrate [manufactured by Eastman Chemical Co., CAB381-20, number average molecular weight 70,000, acetylation degree 13.5% by mass, butyrylation degree 37.0% by mass, hydroxyl group content 1.3 400% by mass, glass transition point 141 ° C.], 15 parts by mass of plasticizer [diisodecyl phthalate], and 1 part by mass of silane coupling agent [3- (2-aminoethyl) aminopropyltrimethoxysilane] An ink receiving layer coating solution was prepared by dissolving in a mixed solvent of parts by mass of toluene and 100 parts by mass of ethanol. This ink-receiving layer coating solution was made into a 50 μm thick polyethylene terephthalate film [manufactured by Mitsubishi Plastics, T600E50, arithmetic average roughness (Ra): 10 nm on both sides]. Using a film applicator, the coated film was coated to a thickness of 25 μm, dried at 80 ° C. for 2 minutes, further dried at 120 ° C. for 2 minutes, and wound on a core material to receive ink. The roll body of the base film with a layer was obtained.
The obtained base film with an ink-receiving layer has a total light transmittance of 90%, a haze of 1.1%, and the measurement results of curl height are 26 mm, 12 mm, 3 mm, and 8 mm. there were.

Next, a trade name “Diafoil MRF25” (manufactured by Mitsubishi Plastics, polyester film, thickness: 25 μm) was prepared as a release film. One surface side of the release film is a release surface made of silicone. Further, the other surface side was subjected to an anti-slip antistatic treatment to form an anti-slip antistatic treatment layer, the arithmetic average roughness (Ra) was 14 nm, and the surface resistivity was 1.7 × 10 ⁹ Ω / □. It was.
An acrylic pressure-sensitive adhesive composition was applied to one surface side of the release film and dried at 90 ° C. for 1 minute to form a pressure-sensitive adhesive layer having a thickness of 20 μm.
Moreover, the base material film side of the said base film with an ink receiving layer was laminated | stacked on this adhesive layer, and the roll body of the inkjet printing material of Example 1 was obtained by winding up to a core material.
The measurement results of the curl height of the inkjet printing material of Example 1 were 10 mm, 7 mm, 10 mm, and 6 mm, which were favorable.
When the base film with an ink receiving layer was fed out from the roll body, blocking did not occur. The static friction coefficient between the ink receiving layer and the substrate film was 1.4.
About the roll body of the inkjet printing material, it printed using a brand name "CVJ30-130" (made by Mimaki Engineering) as an inkjet printer. When the inkjet printing material was fed out from the roll body, neither blocking nor peeling charge occurred. Further, the ink was ejected at an accurate position. There was no collision of the inkjet head. The static friction coefficient between the ink receiving layer and the release film was 1.3.

(Example 2)
In place of cellulose acetate butyrate, cellulose acetate propionate [Eastman Chemical Co., CAP482-20, number average molecular weight 75,000, acetylation degree 2.5 mass%, propionylation degree 46.0 mass%, hydroxyl group-containing A substrate film with an ink receiving layer and an inkjet printing material of Example 2 were produced in the same manner as in Example 1 except that the amount was 1.8% by mass and the glass transition point was 147 ° C.
The obtained base film with an ink receiving layer has a total light transmittance of 90%, a haze of 1.0%, and the measurement results of curl height are 25 mm, 12 mm, 3 mm, and 8 mm, which are good. there were.
The measurement results of the curl height of the inkjet printing material of Example 2 were 10 mm, 7 mm, 9 mm, and 6 mm, which were favorable.
When the base film with an ink receiving layer was fed out from the roll body, blocking did not occur. The static friction coefficient between the ink receiving layer and the substrate film was 1.4.
When the inkjet printing material was fed out from the roll body, neither blocking nor peeling charge occurred. Further, the ink was ejected at an accurate position. There was no collision of the inkjet head. The static friction coefficient between the ink receiving layer and the release film was 1.3.

(Comparative Example 1)
In the inkjet printing material of Example 1, as a release film, a polyester film (thickness: 25 μm, no slippery antistatic treatment) coated with silicone was used on the silicone-coated surface side of this release film. An inkjet printing material of Comparative Example 1 was produced in the same manner except that the pressure-sensitive adhesive layer was formed.
The surface of the release film opposite to the silicone coated surface had an arithmetic average roughness (Ra) of 7 nm and a surface resistivity of 1.1 × 10 ¹⁵ Ω / □.
When the curl measurement of the inkjet printing material of Comparative Example 1 was performed, the measurement results of the curl height were 11 mm, 7 mm, 10 mm, and 6 mm.
When the base film with an ink receiving layer was fed out from the roll body, blocking did not occur. The static friction coefficient between the ink receiving layer and the substrate film was 1.4.
When the inkjet printing material is fed out from the roll body, blocking and peeling charging occurred. The ink was not jetted to the correct position. There was no collision of the inkjet head. The static friction coefficient between the ink receiving layer and the release film was 3.1.

(Comparative Example 2)
In the inkjet printing material of Example 2, as a release film, a polyester film (thickness: 25 μm, no slippery antistatic treatment) coated with silicone was used on the silicone-coated surface side of this release film. An inkjet printing material of Comparative Example 2 was produced in the same manner except that the pressure-sensitive adhesive layer was formed.
When the curl measurement of the inkjet printing material of Comparative Example 2 was performed, the measurement results of the curl height were 9 mm, 8 mm, 10 mm, and 5 mm.
When the base film with an ink receiving layer was fed out from the roll body, blocking did not occur. The static friction coefficient between the ink receiving layer and the substrate film was 1.4.
When the inkjet printing material is fed out from the roll body, blocking and peeling charging occurred. The ink was not jetted to the correct position. There was no collision of the inkjet head. The static friction coefficient between the ink receiving layer and the release film was 3.1.

(Example 3)
A base film with an ink receiving layer and an inkjet printing material of Example 3 were prepared in the same manner as in the ink receiving layer coating liquid of Example 1, except that the ink receiving layer coating liquid not containing a plasticizer was used. did.
The obtained base film with an ink receiving layer had a total light transmittance of 90% and a haze of 1.1%. The measurement result of the curl height of the base film with an ink receiving layer was a curl of 90 ° or more. did.
The measurement results of the curl height of the inkjet printing material of Example 3 were 50 mm, 55 mm, 46 mm, and 63 mm.
When the base film with an ink receiving layer was fed out from the roll body, blocking did not occur. The static friction coefficient between the ink receiving layer and the substrate film was 1.4.
When laminating the pressure-sensitive adhesive layer, there was a portion where both ends were bent due to the curl of the base film with an ink receiving layer.
When the inkjet printing material was fed out from the roll body, neither blocking nor peeling charge occurred. Further, the ink was jetted to an accurate position in a portion excluding both ends of the inkjet printing material. The inkjet head collided with both ends of the curled inkjet printing material, and the conveyance was stopped. The static friction coefficient between the ink receiving layer and the release film was 1.3.

Example 4
A base film with an ink receiving layer and an inkjet printing material of Example 4 were prepared in the same manner as in the ink receiving layer coating liquid of Example 2, except that the ink receiving layer coating liquid not containing a plasticizer was used. did.
The obtained base film with an ink receiving layer has a total light transmittance of 90%, a haze of 1.0%, and the measurement result of the curl height of the base film with an ink receiving layer is 90 ° or more. there were.
The measurement results of the curl height of the inkjet printing material of Example 4 were 48 mm, 55 mm, 46 mm, and 61 mm.
When the base film with an ink receiving layer was fed out from the roll body, blocking did not occur. The static friction coefficient between the ink receiving layer and the substrate film was 1.4.
When laminating the pressure-sensitive adhesive layer, there was a portion where both ends were bent due to the curl of the base film with an ink receiving layer.
When the inkjet printing material was fed out from the roll body, neither blocking nor peeling charge occurred. Further, the ink was jetted to an accurate position in a portion excluding both ends of the inkjet printing material. The inkjet head collided with both ends of the curled inkjet printing material, and the conveyance was stopped. The static friction coefficient between the ink receiving layer and the release film was 1.3.

(Example 5)
Except for using a polyethylene terephthalate film [Toray Industries, Ltd., Lumirror T60, thickness 25 μm, arithmetic average roughness (Ra): 7 nm on both sides] as the base film without easy slip adhesion treatment on both sides. In the same manner as in Example 1, a roll body of a substrate film with an ink receiving layer and a roll body of an inkjet printing material were produced.
When the base film with an ink receiving layer was fed out from the roll body, blocking occurred. The coefficient of static friction between the ink receiving layer and the substrate film was 3.2.
When the inkjet printing material was fed out from the roll body, neither blocking nor peeling charge occurred. Further, the ink was ejected at an accurate position. There was no collision of the inkjet head. The static friction coefficient between the ink receiving layer and the release film was 1.3.

  According to the present invention, in an inkjet printer using various inks such as a solvent system, a latex system, a dye system, a pigment system, and a UV curable system, an inkjet that prevents blocking and peeling charging when an inkjet printing material is sent out. A material to be printed can be provided. The present invention can also provide a laminate roll using the same and a printed matter. The printed matter obtained by inkjet printing on the ink receiving layer of the inkjet printing material of the present invention is formed by peeling the release film between the release treatment surface of the release film of the printed matter and the adhesive layer. It is used by sticking to the object.

  DESCRIPTION OF SYMBOLS 1 ... Inkjet printing material, 2 ... Laminate roll, 10 ... Release film, 10A ... Release processing surface (one surface side of release film), 10B ... Other surface side of release film (Surface treated with anti-slip antistatic treatment), 12 ... easy-slip antistatic treatment layer, 14 ... release substrate, 16 ... release treatment release layer, 20 ... adhesive layer, 30 ..Base film, 32 ... Easily slidable adhesive layer, 34 ... Base material layer, 36 ... Easily adhesive layer, 40 ... Ink receiving layer, 50 ... Base material with ink receiving layer Film, 60 ... Core

Claims (7)

A release film having a release treatment surface on one surface side, an adhesive layer laminated on the release treatment surface, a base film laminated on the adhesive layer, and laminated on the base film An ink receiving layer,
The ink receiving layer contains modified cellulose;
An inkjet printing material in which the other surface side of the release film is subjected to an anti-slip antistatic treatment.   The inkjet printing material of Claim 1 in which the slipperiness antistatic process layer is formed in the said other surface side of the said peeling film.   The inkjet printing material according to claim 2, wherein the easy-slip antistatic treatment layer contains a filler and an antistatic agent.   The inkjet printing material as described in any one of Claims 1-3 in which the said ink receiving layer contains a plasticizer.   The inkjet printing material as described in any one of Claims 1-4 by which the surface at the side of the said adhesive layer of the said base film is an easy-slip adhesion process.   The laminated body roll by which the inkjet printing material as described in any one of Claims 1-5 is wound up by the core material.   The printed matter formed by carrying out inkjet printing on the said ink receiving layer of the inkjet printing material as described in any one of Claims 1-5.

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