WO2017090222A1 - Ink application method and method for producing wallpaper - Google Patents
Ink application method and method for producing wallpaper Download PDFInfo
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- WO2017090222A1 WO2017090222A1 PCT/JP2016/004457 JP2016004457W WO2017090222A1 WO 2017090222 A1 WO2017090222 A1 WO 2017090222A1 JP 2016004457 W JP2016004457 W JP 2016004457W WO 2017090222 A1 WO2017090222 A1 WO 2017090222A1
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- WIPO (PCT)
- Prior art keywords
- ink
- image
- wallpaper
- gel layer
- oil
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Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/30—Inkjet printing inks
- C09D11/32—Inkjet printing inks characterised by colouring agents
- C09D11/322—Pigment inks
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/30—Inkjet printing inks
- C09D11/36—Inkjet printing inks based on non-aqueous solvents
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
- D21H27/18—Paper- or board-based structures for surface covering
- D21H27/20—Flexible structures being applied by the user, e.g. wallpaper
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
- B41M3/18—Particular kinds of wallpapers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
- B41M5/52—Macromolecular coatings
- B41M5/5254—Macromolecular coatings characterised by the use of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds, e.g. vinyl polymers
Definitions
- the present disclosure relates to an ink application method, particularly a method for applying ink to an object by inkjet printing system, and a method for producing wallpaper.
- the wallpaper is generally made of incombustible base paper or non-woven fabric to give sticking property, incombustibility, and fireproof property to the wall surfaces.
- the wallpaper also has a resin layer on its surface to give resistance to scratch and contamination.
- the resin layer is composed mainly of a polyvinyl-chloride-based resin containing an ester-oil-based plasticizer.
- the resin layer further contains a foaming agent that gives flexibility upon foaming. It is widely known that a three-dimensional decoration can be given to the resin layer by embossing.
- Oil-based ink advantageously provides a high-density image since colorants are dissolved or dispersed therein at a high concentration. Oil-based ink also has excellent resistance to water and nozzle clogging in inkjet apparatuses. Also, having excellent resistance to light and ozone, oil-based inks are widely used for wallpapers applied for large-size POP art, advertisement, and display.
- oil-based ink Since the major ingredient is a nonvolatile oily component, oil-based ink has very poor permeability and absorptivity to the resin layer.
- PTL 2 has attempted to form an oil-based ink receiving layer composed mainly of a vinyl chloride-acrylic resin copolymer having a desired glass transition temperature on a support, to increase the number of cracks appearing on the surface of the resulting wallpaper and accelerate permeation of ink thereto.
- provision of the ink receiving layer disadvantageously makes the production process of wallpaper more complicated and the production cost thereof much higher.
- the method described in PTL 2 is the same as that described in PTL 1 in that the ink receiving layer is provided to improve ink fixability.
- these methods do not improve inkjet printing quality on wallpapers which are composed of soft vinyl chloride that is generally and widely used.
- an improved inkjet printing method which can print high-quality images on soft vinyl chloride with an ink having high permeability, to produce wallpapers in a simple process.
- an ink application method which can provide high-quality images on an object with high ink absorptivity.
- an ink is discharged to an object by an inkjet method, to apply the ink to the object.
- the object includes a base material and a gel layer overlying the base material, and the gel layer includes a vinyl chloride resin and a plasticizer.
- the ink is an oil-based ink.
- the curve derived from the hard component accounts for 35% to 40% of the free induction decay curve
- the curve derived from the soft component has a spin-spin relaxation time of from 30.0 to 45.0 ms when obtained by a Hahn echo method.
- FIG. 1 is a schematic view of an ink application apparatus employing an inkjet printing system in accordance with an embodiment of the present invention.
- FIG. 2 is a schematic illustration of a situation where an oil-based ink impacts on an object and a colorant in the oil-based ink fixes on the object.
- FIG. 3 is a graph showing a decay curve (echo signal) and two relaxation curves corresponding to hard and soft components, obtained by decomposing the decay curve.
- FIG. 4A is a photograph representing the grade A, based on an evaluation criteria of coverage in solid image.
- FIG. 4B is a photograph representing the grade B, based on an evaluation criteria of coverage in solid image.
- FIG. 4C is a photograph representing the grade C, based on an evaluation criteria of coverage in solid image.
- FIG. 4D is a photograph representing the grade D, based on an evaluation criteria of coverage in solid image.
- the base material is not limited to a specific material so long as it exhibits proper mechanical strength and heat resistance when used as the wallpaper.
- paper and non-woven fabric which are typically used for wallpapers, are preferably used. More specifically, natural paper, plastic film, synthetic paper, non-woven fabric, cloth, wood, and metal thin film can be used for the base material based on the purpose of use.
- the base material is preferably selected from a plastic film, a synthetic paper sheet made of a synthetic fiber, or a non-woven fabric sheet.
- the plastic film include, but are not limited to, a polyester film, a polypropylene film, a polyethylene film, and a laminated body of nylon, vinylon, and/or acrylic films or sheets.
- the plastic film is preferably subjected to unaxial or biaxial drawing for improving its strength.
- Specific examples of the non-woven fabric sheet includes a sheet formed by spreading polyethylene fibers in a sheet-like pattern and bonding the polyethylene fibers by heat and pressure.
- the gel layer formed on one surface of the base material, includes a vinyl chloride resin and a plasticizer.
- the gel layer is formed by coating the vinyl chloride resin on the base material so as to incorporate the plasticizer.
- the vinyl chloride resin is a general-purpose resin having excellent physical and chemical properties. Cheaper than other resins, the vinyl chloride resin is widely applied in various fields of soft, semi-hard, and hard resins.
- a soft-vinyl-chloride-resin-based product uses a gel layer in which 100 parts by mass of a vinyl chloride resin is swelled and solvated by 30 to 100 parts by mass of a plasticizer.
- the gel layer may include a filler, a dispersant, a defoamer, an antiblocking agent, a thickener, and/or a foaming agent, if needed.
- the foaming agent may be an inorganic foaming agent, an organic foaming agent, a microcapsule foaming agent, or a combination thereof.
- Specific examples of the organic foaming agent include, but are not limited to, azodicarbonamide (ADCA), azobisisobutyronitrile (AIBN), p,p’-oxybisbenzenesulfonohydrazide (OBSH), and dinitrosopentamethylenetetramine (DPT).
- Specific examples of the inorganic foaming agent include, but are not limited to, inorganic carbonates such as sodium hydrogen carbonate.
- Pulse NMR Measurement The objects 1 to 4 were subjected to a pulse NMR measurement as follows. Each of the objects 1 to 4 was subjected to a measurement of the spin-spin relaxation time obtained by the Hahn echo method with respect to the curve derived from the soft component of the object using a pulse NMR (the minispec mq series available from Bruker Corporation) under the above-described detailed conditions. The spin-spin relaxation times thus measured varying the heating time are described in Table 2.
- Example 2 The procedure in Example 1 was repeated except for changing the heating temperature from 110°C to 120°C to prepare an image of Example 2. The image was subjected to the foaming and embossing processes. The evaluation results are shown in Table 4.
- Example 5 The procedure in Example 4 was repeated except for replacing the ink 1 with the ink 2 to prepare an image of Example 5. The image was subjected to the foaming and embossing processes. The evaluation results are shown in Table 4.
- Example 7 The procedure in Example 1 was repeated except for replacing the object 1 with the object 3 and changing the heating temperature from 110°C to 100°C to prepare an image of Example 7. The image was subjected to the foaming and embossing processes. The evaluation results are shown in Table 4.
- Example 9 The procedure in Example 1 was repeated except for replacing the object 1 with the object 4 and changing the heating temperature from 110°C to 130°C to prepare an image of Example 9. The image was subjected to the foaming and embossing processes. The evaluation results are shown in Table 4.
- Example 10 The procedure in Example 9 was repeated except for replacing the ink 1 with the ink 2 to prepare an image of Example 10. The image was subjected to the foaming and embossing processes. The evaluation results are shown in Table 4.
- Example 12 The procedure in Example 6 was repeated except for replacing the ink 3 with the ink 4 to prepare an image of Example 12. The image was subjected to the foaming and embossing processes. The evaluation results are shown in Table 4.
- Comparative Example 3 The procedure in Comparative Example 2 is repeated except for replacing the ink 1 with the ink 2 to prepare an image of Comparative Example 3. The image is subjected to the foaming and embossing processes. The evaluation results are shown in Table 4.
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Ink Jet Recording Methods And Recording Media Thereof (AREA)
Abstract
Description
The method described in PTL 2 is the same as that described in PTL 1 in that the ink receiving layer is provided to improve ink fixability. However, these methods do not improve inkjet printing quality on wallpapers which are composed of soft vinyl chloride that is generally and widely used.
In view of this situation, there is a demand for an improved inkjet printing method which can print high-quality images on soft vinyl chloride with an ink having high permeability, to produce wallpapers in a simple process.
For the sake of simplicity, the same reference number will be given to identical constituent elements such as parts and materials having the same functions and redundant descriptions thereof omitted unless otherwise stated.
The object includes a base material that may be a flat material composed of paper or non-woven fabric, or a stereoscopic material. On at least one surface of the flat material or a surface of the stereoscopic material, a gel layer including a vinyl chloride resin and a plasticizer is provided. The gel layer may further include a heat foaming agent. When the object is wallpaper, the heat foaming agent is preferably used. Hereinafter, descriptions may be made taking an illustrative example in which the object is wallpaper. However, the object is not limited to wallpaper and can be an architectural material including flooring.
Specific examples of the plastic film include, but are not limited to, a polyester film, a polypropylene film, a polyethylene film, and a laminated body of nylon, vinylon, and/or acrylic films or sheets.
Specific examples of the non-woven fabric sheet includes a sheet formed by spreading polyethylene fibers in a sheet-like pattern and bonding the polyethylene fibers by heat and pressure.
The gel layer is formed by coating the vinyl chloride resin on the base material so as to incorporate the plasticizer.
The vinyl chloride resin is a general-purpose resin having excellent physical and chemical properties. Cheaper than other resins, the vinyl chloride resin is widely applied in various fields of soft, semi-hard, and hard resins. Generally, a soft-vinyl-chloride-resin-based product uses a gel layer in which 100 parts by mass of a vinyl chloride resin is swelled and solvated by 30 to 100 parts by mass of a plasticizer.
The foaming agent may be an inorganic foaming agent, an organic foaming agent, a microcapsule foaming agent, or a combination thereof. Specific examples of the organic foaming agent include, but are not limited to, azodicarbonamide (ADCA), azobisisobutyronitrile (AIBN), p,p’-oxybisbenzenesulfonohydrazide (OBSH), and dinitrosopentamethylenetetramine (DPT).
Specific examples of the inorganic foaming agent include, but are not limited to, inorganic carbonates such as sodium hydrogen carbonate.
The ink application method according to an embodiment of the present invention uses an oil-based ink.
The oil-based ink includes an oily component and a colorant. The oil-based ink may further include a binder resin, if needed.
Preferably, the oily component is composed primarily of an ester oil.
The ester oil preferably accounts for 30% by mass or more, more preferably from 50% to 90% by mass, of the oil-based ink, for the purpose of keeping ink fixation strength of the printed image good. In addition, the oil-based ink may include 5% by mass or less of water.
Such an oil-based ink composed primarily of an ester oil can be reliably applied to the gel layer containing the plasticizer by heat, without provision of any special inkjet ink receiving layer, thus providing high-quality image.
The wallpaper includes an object and an ink layer. The object includes a base material and a gel layer overlying the base material. The gel layer includes a vinyl chloride resin and a plasticizer. The ink layer is formed on the gel layer of the object.
A method for producing wallpaper may include a process of allowing a foaming agent included in the gel layer to foam. Alternatively, the method may not include such a process of allowing a foaming agent, in the case in which no foaming agent is included in the gel layer.
Hereinafter, a method for producing wallpaper in the case in which a foaming agent is included in the gel layer is described.
The method for producing wallpaper includes: an ink application process in which an ink is discharged by an inkjet method to the gel layer to form an image thereon; a foaming process in which the wallpaper is allowed to foam; and an embossing process in which a concave-convex pattern is formed on the surface of the wallpaper.
The method may further include an object producing process in which the gel layer is formed on the base material to produce the wallpaper, prior to the ink application process.
Each of these processes may be performed independently, or the series of processes may be performed successively.
The object is produced by forming the gel layer on the base material.
The gel layer materials, including the vinyl chloride resin, the plasticizer, and the foaming agent, are coated on the base material by a known application method such as knife coating method, nozzle coating method, die coating method, lip coating method, comma coating method, gravure coating method, rotary screen coating method, and reverse roll coating method.
The gelation temperature is preferably in the range of from 150°C to 190°C. When the gelation temperature is higher than 190°C, as the gelation progresses, it is likely that multiple grooves are formed on the surface of the gel layer and ink absorptivity of the gel layer deteriorates, thereby significantly degrading inkjet printing quality. When the gelation temperature is lower than 150°C, the gelation progresses insufficiently. As a result, the printed image easily blurs or it becomes difficult to obtain a desired image density.
FIG. 1 is a schematic view of an ink application apparatus employing an inkjet printing system in accordance with an embodiment of the present invention. An object 1, composed of the base material and the gel layer thereon, is obtained by the above-described object producing process. The object 1 is preheated by a preheat drum 2 and then conveyed to an
FIG. 2 is a schematic illustration of a situation where an oil-based
The measurement based on the pulse NMR method may be performed in accordance with the following procedure.
A high-frequency magnetic field, as a pulse, is applied to the object put in an NMR tube, using a pulse NMR (the minispec mq series available from Bruker Corporation), and the time until x and y components disappear upon tilting of the magnetization vector, i.e., relaxation time, is measured to evaluate mobility of molecules composing the object.
The object in an amount of 0.2 g is weighed in an NMR tube having a diameter of 10 mm and preheated by a preheater for 15 minutes at a predetermined temperature equivalent to the heating temperature at the time of printing. If the sample is once overheated and then cooled to have the predetermined temperature, the gel condition and properties of the sample significantly differ from the case in which the sample is just heated to have the predetermined temperature. Therefore, heating of the sample should be started after the preheater is adjust to have the predetermined temperature.
Hahn echo method
First 90° Pulse Separation: 0.01 msec
Final Pulse Separation: 20 msec
Number of Data Point for Fitting: 40 points
Cumulated Number: 32 times
Temperature: Equivalent to the heating temperature at the time of printing.
The spin-spin relaxation time (t2) is calculated from a decay curve obtained by the Hahn echo method in the pulse NMR measurement, using an exponential approximation of ORIGIN 8.5 (available from OriginLab Corporation). It is known that the spin-spin relaxation time gets shorter as the molecule mobility gets lower and that the spin-spin relaxation time gets longer as the molecule mobility gets higher.
A decay curve obtained by the Hahn echo method in the pulse NMR measurement is a superimposition of two relaxation curves each derived from a hard component having a low molecule mobility and a soft component having a high molecule mobility.
The obtained echo signal can be separated into two relaxation curves derived from the hard and soft components by using a bi-exponential approximation of ORIGIN 8.5 (available from OriginLab Corporation), and the spin-spin relaxation time (tH, tS) of the respective hard ans soft components can be calculated.
The hard component having a low molecule mobility is generally derived from a material having a high hardness, and the soft component having a high molecule mobility is generally derived from a material having a high softness.
It is known that the spin-spin relaxation time gets shorter as the molecule mobility gets lower and that the spin-spin relaxation time gets longer as the molecule mobility gets higher.
Accordingly, one of the two relaxation curves which has a shorter spin-spin relaxation time corresponds to the hard component and the other one which has a longer spin-spin relaxation time corresponds to the soft component.
In the foaming process, a heat foaming agent dispersed in the gel layer of the object is allowed to foam by heating the object.
In the embossing process, a concave-convex pattern is formed on the foamed gel layer of the object.
The concave-convex pattern can be formed by means of embossing, chemical embossing, rotary screen processing, or build-up printing, which are known methods generally used for giving a concave-convex pattern to wallpapers or decorative materials. These methods, i.e., embossing, chemical embossing, rotary screen processing, and build-up printing are preferably used.
Other processes which are generally employed in a typical method for producing wallpaper can be performed, if needed. As an example, a coating processing for giving scratch resistance may be performed.
In particular, the object is prevented from being sticky and improved in terms of design when a transparent protective layer is formed by such a coating processing. The protective layer may be preferably composed of an urethane resin, an acrylic resin (e.g., polymethyl methacrylate), or a fluorine resin (e.g., polyvinyl fluoride, polyvinylidene fluoride, polyethylene fluoride).
These processes may be performed either before or after the production process of the wallpaper.
Preparation of Objects 1 to 4
A plasticizer and a stabilizer in predetermined amounts described in Table 1 were mixed and stirred to prepare a mixture liquid. The mixture liquid was further mixed and stirred with an emulsion-polymerized polyvinyl chloride (PSL available from Kaneka Corporation), a foaming agent, calcium carbonate, and titanium dioxide in predetermined amounts described in Table 1.
The resulting mixture was applied to the surface of a paper sheet having a mass of 80 g/m2 by a coater at an amount of application of 130 g/m2. The paper sheet having the applied mixture thereon was put in an oven at a predetermined heating temperature for a predetermined heating time each described in Table 1, to put polyvinyl chloride sol into a pre-gel state. Thus, objects 1 to 4 were prepared.
In Table 1, the numerals represent mass ratio in parts.
The objects 1 to 4 were subjected to a pulse NMR measurement as follows.
Each of the objects 1 to 4 was subjected to a measurement of the spin-spin relaxation time obtained by the Hahn echo method with respect to the curve derived from the soft component of the object using a pulse NMR (the minispec mq series available from Bruker Corporation) under the above-described detailed conditions.
The spin-spin relaxation times thus measured varying the heating time are described in Table 2.
Preparation of Inks 1 to 4
Inks 1 to 3 were prepared by mixing components listed in Table 3 and subjecting the mixture to a dispersion treatment with a bead mill disperser.
In Table 3, the numerals represent mass ratio in parts.
The object 1 was secured on a hot plate with a heat-resistant double-sided adhesive tape, and the surface was heated to 110°C. An inkjet printer IPSIO GX5500 (available from Ricoh Co., Ltd.) was modified in such a manner that the hot plate was s introduced into the ink printing part. After being filled with the ink 1, this modified imaging apparatus was allowed to print a 600-dpi solid image.
The resulting image was subjected to evaluations of (1) coverage in solid image, (2) ink absorptivity, and (3) image density, in the following manner.
The resulting image was further subjected to a foaming processing by being heated at 210°C for 30 seconds, and then an embossing process using an embossing roller. The embossed image was further subjected to an evaluation of (4) image density difference after embossing.
The evaluation results are shown in Table 4.
The resulting image was magnified with a microscope (VHX available from Keyence Corporation) at a magnification of 450 times, and a solid part of the image was photographed. The photograph was subjected to a binarization process using a free software program Image J to determine the area ratio of the ink to the background of the object. This area ratio was defined as “coverage”. The coverage was evaluated based on the following criteria. Photographs representing the grades A to D are shown in FIGS. 4A to 4D, respectively.
Evaluation Criteria
A: The coverage was not less than 80%.
B: The coverage was not less than 70% and less than 80%.
C: The coverage was not less than 60% and less than 70%.
D: The coverage was less than 60%.
The resulting image was rubbed 10 times with a piece of paper (Lumi Art Gloss 130gsm) cut into a square with each side having a length of 1.2 mm. The rubbed image was observed with both a microscope and the naked eye to determine the degree of image blurring.
Evaluation Criteria
A: No image blurring was observed. Good.
B: Image blurring was slightly observed with the microscope, but was less visible with the naked eye. Acceptable.
C: Image blurring was observed with the naked eye.
D: Ink in a liquid state was spread over the rubbed portion. Cannot put into practical use.
A solid part of the resulting image was subjected to a measurement of image density using a reflective color spectrophotometric densitometer (available from X-Rite).
Evaluation Criteria
A: Image density was not less than 1.2.
B: Image density was not less than 1.0 and less than 1.2.
C: Image density was not less than 0.8 and less than 1.0.
D: Image density was less than 0.8.
The resulting image was subjected to a measurement of image density using a reflective color spectrophotometric densitometer (available from X-Rite) before and after being subjected to the foaming and embossing processes. The difference in image density before and after the foaming and embossing processes was evaluated based on the following criteria.
Evaluation Criteria
B: The difference in image density was less than 0.05.
C: The difference in image density was not less than 0.05 and less than 0.1.
D: The difference in image density was not less than 0.1.
The procedure in Example 1 was repeated except for changing the heating temperature from 110°C to 120°C to prepare an image of Example 2. The image was subjected to the foaming and embossing processes. The evaluation results are shown in Table 4.
The procedure in Example 1 was repeated except for changing the heating temperature from 110°C to 130°C to prepare an image of Example 3. The image was subjected to the foaming and embossing processes. The evaluation results are shown in Table 4.
The procedure in Example 1 was repeated except for replacing the object 1 with the object 2 and changing the heating temperature from 110°C to 130°C to prepare an image of Example 4. The image was subjected to the foaming and embossing processes. The evaluation results are shown in Table 4.
The procedure in Example 4 was repeated except for replacing the ink 1 with the ink 2 to prepare an image of Example 5. The image was subjected to the foaming and embossing processes. The evaluation results are shown in Table 4.
The procedure in Example 4 was repeated except for replacing the ink 1 with the
The procedure in Example 1 was repeated except for replacing the object 1 with the
The procedure in Example 1 was repeated except for replacing the object 1 with the
The procedure in Example 1 was repeated except for replacing the object 1 with the
The procedure in Example 9 was repeated except for replacing the ink 1 with the ink 2 to prepare an image of Example 10. The image was subjected to the foaming and embossing processes. The evaluation results are shown in Table 4.
The procedure in Example 9 was repeated except for replacing the ink 1 with the
The procedure in Example 6 was repeated except for replacing the
The procedure in Example 11 was repeated except for replacing the
The procedure in Example 1 is repeated except for changing the heating temperature from 110°C to 100°C to prepare an image of Comparative Example 1. The image is subjected to the foaming and embossing processes. The evaluation results are shown in Table 4.
The procedure in Example 1 is repeated except for replacing the object 1 with the object 2 and changing the heating temperature from 110°C to 120°C to prepare an image of Comparative Example 2. The image is subjected to the foaming and embossing processes. The evaluation results are shown in Table 4.
The procedure in Comparative Example 2 is repeated except for replacing the ink 1 with the ink 2 to prepare an image of Comparative Example 3. The image is subjected to the foaming and embossing processes. The evaluation results are shown in Table 4.
The procedure in Comparative Example 2 is repeated except for replacing the ink 1 with the
The procedure in Example 1 is repeated except for replacing the object 1 with the
The procedure in Example 1 is repeated except for replacing the object 1 with the
Numerous additional modifications and variations are possible in light of the above teachings. It is therefore to be understood that, within the scope of the above teachings, the present disclosure may be practiced otherwise than as specifically described herein. With some embodiments having thus been described, it will be obvious that the same may be varied in many ways. Such variations are not to be regarded as a departure from the scope of the present disclosure and appended claims, and all such modifications are intended to be included within the scope of the present disclosure and appended claims.
2 preheat drum
3 heat drum
4 inkjet discharger
21 oil-based ink
22 colorant
23 oily component
31 base material
32 gel layer
33 gel network
34 oily component including plasticizer
35 image
Claims (7)
- An ink application method, comprising:
discharging an ink to an object by an inkjet method, to apply the ink to the object,
wherein the object includes a base material and a gel layer overlying the base material, the gel layer including a vinyl chloride resin and a plasticizer;
wherein the ink is an oil-based ink, and
wherein, when a free induction decay curve of the object obtained by a pulse NMR method is separated into two curves respectively derived from a hard component and a soft component, the curve derived from the hard component accounts for 35% to 40% of the free induction decay curve, and the curve derived from the soft component has a spin-spin relaxation time of from 30.0 to 45.0 ms when obtained by a Hahn echo method. - An ink application method, comprising:
forming a gel layer on a base material to form an object, the gel layer including a vinyl chloride resin and a plasticizer;
discharging an oil-based ink to the object by an inkjet method, to apply the oil-based ink to the object,
wherein, when a free induction decay curve of the object obtained by a pulse NMR method is separated into two curves respectively derived from a hard component and a soft component, the curve derived from the hard component accounts for 35% to 40% of the free induction decay curve, and the curve derived from the soft component has a spin-spin relaxation time of from 30.0 to 45.0 ms when obtained by a Hahn echo method. - The method according to claim 1 or 2, wherein the oil-based ink is a pigment ink.
- The method according to any one of claims 1 to 3, wherein the object is a wallpaper.
- The method according to claim 4, wherein the gel layer includes a foaming agent.
- A method for producing wallpaper, comprising:
obtaining a wallpaper according the method of claim 4; and
embossing the wallpaper to form a concavo-convex pattern thereon. - A method for producing wallpaper, comprising:
obtaining a wallpaper according the method of claim 5; and
heating the wallpaper to allow the foaming agent in the gel layer to foam; and
embossing the wallpaper to form a concavo-convex pattern thereon.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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CN201680069314.4A CN108698419B (en) | 2015-11-27 | 2016-10-03 | Ink application method and method for producing wallpaper |
RU2018122959A RU2685676C1 (en) | 2015-11-27 | 2016-10-03 | Method for application of paint and method for preparation of wallpaper |
US15/772,924 US10487455B2 (en) | 2015-11-27 | 2016-10-03 | Ink application method and method for producing wallpaper |
EP16868173.2A EP3380332A4 (en) | 2015-11-27 | 2016-10-03 | Ink application method and method for producing wallpaper |
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JP2015-231996 | 2015-11-27 | ||
JP2015231996 | 2015-11-27 | ||
JP2016-128347 | 2016-06-29 | ||
JP2016128347A JP2017105162A (en) | 2015-11-27 | 2016-06-29 | Ink coating method and method for producing wall paper |
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WO2017090222A1 true WO2017090222A1 (en) | 2017-06-01 |
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PCT/JP2016/004457 WO2017090222A1 (en) | 2015-11-27 | 2016-10-03 | Ink application method and method for producing wallpaper |
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Cited By (6)
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WO2018008588A1 (en) * | 2016-07-07 | 2018-01-11 | Ricoh Company, Ltd. | Method for coating inks, method for producing wallpaper, image forming set, image forming system, ink, and ink set |
WO2020130052A1 (en) * | 2018-12-21 | 2020-06-25 | Ricoh Company, Ltd. | Printed substrate and method for printing onto a substrate |
US10946692B2 (en) | 2017-09-08 | 2021-03-16 | Ricoh Company, Ltd. | Method and apparatus for manufacturing printing paper for decorative boards and method for manufacturing laminated structure |
US11007806B2 (en) | 2016-07-07 | 2021-05-18 | Ricoh Company, Ltd. | Method for coating inks, method for producing wallpaper, image forming set, image forming system, ink, and ink set |
RU2773867C1 (en) * | 2018-12-21 | 2022-06-14 | Рикох Компани, Лтд. | Printing substrate and method for printing on a substrate |
US12005725B2 (en) | 2016-12-15 | 2024-06-11 | Ricoh Company, Ltd. | Method of forming a surface covering with substrate, phase transition liquid and plasticizer |
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Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2018008588A1 (en) * | 2016-07-07 | 2018-01-11 | Ricoh Company, Ltd. | Method for coating inks, method for producing wallpaper, image forming set, image forming system, ink, and ink set |
US11007806B2 (en) | 2016-07-07 | 2021-05-18 | Ricoh Company, Ltd. | Method for coating inks, method for producing wallpaper, image forming set, image forming system, ink, and ink set |
US12005725B2 (en) | 2016-12-15 | 2024-06-11 | Ricoh Company, Ltd. | Method of forming a surface covering with substrate, phase transition liquid and plasticizer |
US10946692B2 (en) | 2017-09-08 | 2021-03-16 | Ricoh Company, Ltd. | Method and apparatus for manufacturing printing paper for decorative boards and method for manufacturing laminated structure |
WO2020130052A1 (en) * | 2018-12-21 | 2020-06-25 | Ricoh Company, Ltd. | Printed substrate and method for printing onto a substrate |
CN113195237A (en) * | 2018-12-21 | 2021-07-30 | 株式会社理光 | Printed substrate and method for printing onto a substrate |
RU2773867C1 (en) * | 2018-12-21 | 2022-06-14 | Рикох Компани, Лтд. | Printing substrate and method for printing on a substrate |
US11560008B2 (en) | 2018-12-21 | 2023-01-24 | Ricoh Company, Ltd. | Printed substrate and method for printing onto a substrate |
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