WO2014084280A1 - 化粧板原紙及び化粧板 - Google Patents
化粧板原紙及び化粧板 Download PDFInfo
- Publication number
- WO2014084280A1 WO2014084280A1 PCT/JP2013/081966 JP2013081966W WO2014084280A1 WO 2014084280 A1 WO2014084280 A1 WO 2014084280A1 JP 2013081966 W JP2013081966 W JP 2013081966W WO 2014084280 A1 WO2014084280 A1 WO 2014084280A1
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- WIPO (PCT)
- Prior art keywords
- base paper
- decorative
- printing
- paper
- decorative board
- Prior art date
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Classifications
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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
- B41M5/5218—Macromolecular coatings characterised by inorganic additives, e.g. pigments, clays
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- 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
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/33—Synthetic macromolecular compounds
- D21H17/46—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D21H17/54—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen
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- 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
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/63—Inorganic compounds
- D21H17/67—Water-insoluble compounds, e.g. fillers, pigments
- D21H17/675—Oxides, hydroxides or carbonates
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- 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
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/71—Mixtures of material ; Pulp or paper comprising several different materials not incorporated by special processes
- D21H17/74—Mixtures of material ; Pulp or paper comprising several different materials not incorporated by special processes of organic and inorganic material
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- 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
- D21H19/00—Coated paper; Coating material
- D21H19/10—Coatings without pigments
- D21H19/12—Coatings without pigments applied as a solution using water as the only solvent, e.g. in the presence of acid or alkaline compounds
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- 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
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/18—Reinforcing agents
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- 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
- D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
- D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
- D21H23/22—Addition to the formed paper
- D21H23/50—Spraying or projecting
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- 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
- D21H27/22—Structures being applied on the surface by special manufacturing processes, e.g. in presses
- D21H27/26—Structures being applied on the surface by special manufacturing processes, e.g. in presses characterised by the overlay sheet or the top layers of the structures
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- 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
- D21H27/30—Multi-ply
Definitions
- the present invention relates to a decorative board base paper used as a surface decorative material for thermosetting resin decorative boards such as a melamine decorative board, a polyester decorative board, and a dapp decorative board. More specifically, the present invention relates to a decorative board base paper that is printed by inkjet printing.
- fillers such as titanium oxide, pigments, and dyes are incorporated according to the hue.
- the overlay base paper needs to have excellent transparency when molded.
- the decorative board base paper is roughly classified into white base paper and color base paper from the viewpoint of its hue.
- the hiding power of the decorative board base paper is mainly imparted by incorporating titanium oxide, but the hiding power can also be imparted by hue (by pigments and dyes).
- a black decorative board base paper is not coated with titanium oxide, but has a hiding power by incorporating a black pigment or black dye.
- the hiding power in the present invention refers to a property of hiding the hue and unevenness of the foundation when a decorative board is used.
- the viewpoint of printing it is broadly classified into printing for printing and monochrome printing for use as it is.
- the difference between printing and single color is mostly in the smoothness setting of the decorative board base paper.
- the front side upper surface of the wire part of the paper machine
- Side is calendared.
- the smoothness of the front surface (Oken type smoothness) for printing is generally 50 to 200 seconds, and printing is performed on the front surface side.
- the amount of titanium oxide distributed on the back surface is smaller than that on the front surface.
- the color base paper has a lighter hue on the back side than on the front side. From these facts, the back side and the front side of the decorative board base paper can be distinguished. The same applies to handmade paper.
- the sheet is finally impregnated with a thermosetting resin and is hot-press molded with another member to be processed into a decorative board. Therefore, the decorative board base paper is required to be impregnated with a thermosetting resin. When the impregnation suitability of the thermosetting resin is poor, the productivity of the impregnation process is lowered.
- the decorative board base paper is a non-size-treated special paper that is not subjected to a sizing process using a sizing agent because it is impregnated with a large amount of a thermosetting resin.
- Patent Document 1 proposes that an ink receiving layer is provided on the front surface of the decorative board base paper by coating. In order to provide the ink receiving layer, a separate coating process is required after papermaking. In the example of Patent Document 1, an ink receiving layer containing amorphous silica is provided on the front surface of a single-color decorative board base paper. Note that Patent Document 1 does not mention the suitability of impregnation with a thermosetting resin.
- Patent Document 2 states that “a dimethyldiallylammonium chloride polymer and a monovalent or divalent water-soluble metal salt are coated or impregnated on a support.
- Patent Document 2 includes a coated paper type, and in the example, Example 3 is an example of a non-coated paper type. In Example 3, the impregnating liquid containing PVA is impregnated with a size press.
- Patent Document 3 relates to an ink jet recording paper for newspaper printing.
- a water-soluble polyvalent metal salt is applied by coating. It is said that a water-soluble polymer binder such as starch or PVA may be used for the coating liquid.
- Patent Document 2 and Patent Document 3 are both subjected to internal size processing. Since it is internally sized, it is not suitable for impregnation.
- JP 2007-212390 A Japanese Examined Patent Publication No. 5-71393 Patent No. 4034597
- An object of the present invention is a decorative base paper for printing by ink jet printing, which relates to a non-coated paper type, and has excellent ink jet printing suitability and excellent thermosetting resin impregnation suitability. Another object is to provide a decorative board using the base paper and further the decorative board base paper.
- the object of the present invention is achieved by externally adding 0.5 to 3.0 g / m 2 of at least one of calcium chloride, magnesium chloride, magnesium sulfate and calcium acetate.
- a decorative base paper that has a concealing power and is not sized, at least one surface of a neutral water-soluble metal salt consisting of calcium chloride, magnesium chloride, magnesium sulfate, and calcium acetate is printed.
- a base paper for decorative board for ink-jet printing which is externally added to the (front surface) and carried by 0.5 to 3.0 g / m 2 as a dry adhesion amount (solid content) of the water-soluble metal salt.
- a method for producing decorative board base paper that has a concealing power and is not sized, comprising at least one neutral water-soluble metal salt consisting of a group of calcium chloride, magnesium chloride, magnesium sulfate and calcium acetate,
- a method for producing decorative base paper for inkjet printing characterized in that spray coating is performed from the printing surface side (front surface side) in a wet press process of a paper machine.
- a thermosetting resin decorative board using, as a surface decorative material, a printed material obtained by performing inkjet printing on a printing surface of a decorative paper base sheet for inkjet printing according to (1).
- the hiding power in the present invention refers to a property of hiding the hue and unevenness of the foundation when a decorative board is used.
- a non-coated paper type decorative board base paper for ink jet printing which is excellent in ink jet printing suitability and excellent in thermosetting resin impregnation suitability.
- the present invention can be applied to both white base paper and color base paper.
- the raw materials and physical properties of the decorative printing board base paper for inkjet printing are based on the conventional decorative printing board base paper, and are not particularly limited.
- the basis weight of decorative printing board base paper is generally in the range of 60 g / m 2 to 110 g / m 2
- the Oken smoothness is in the range of 50 seconds to 200 seconds
- the Oken air permeability is The range of 15 seconds or more and 30 seconds or less is common although it depends on the tsubo and the smoothness.
- printing board base paper is made of pulp such as LBKP and NBKP (the freeness is preferably 400 to 600 CSF), and fillers such as titanium oxide and talc depending on the hue (note that talc has no hiding power) ), A paper stock containing pigments, dyes, and various paper additives such as wet paper strength enhancer, sulfuric acid band, sodium aluminate, yield improver, etc.
- the decorative board base paper is a non-size-treated special paper that is not impregnated with an internal or external additive size using a sizing agent because it is highly impregnated with a thermosetting resin).
- the decorative decorative board base for printing is calendered and is designed on the premise of calendering.
- the ash content of white base paper for printing is generally 20% by mass or more and 40% by mass or less (substantially corresponding to titanium oxide).
- the amount of titanium oxide distributed on the back surface is smaller than that on the front surface.
- the color base paper has a lighter hue on the back side than on the front side. From these facts, the back side and the front side of the decorative board base paper can be distinguished. The same applies to handmade paper.
- a known external addition method can be applied.
- a method of externally adding in a separate process from papermaking not only coating with an air knife coater, bar coater, roll coater, etc., but also soaking can be applied.
- Examples of the external addition method during papermaking include spray coating in a wet press part and impregnation by a size press.
- the external addition during paper making is preferable not only in terms of cost, but also because the hue and physical properties are easy to manage.
- it is more preferable that the wet press paper is spray coated on the wet paper in the process of the paper machine following the wire part, the wet press part, and the dryer part because the drying process is smaller than the size press.
- Calcium chloride, magnesium chloride, magnesium sulfate, and calcium acetate used in the present invention are water-soluble metal salts having high solubility in water.
- the aqueous solution of the four types of water-soluble metal salts of the present invention is neutral.
- the neutrality of an aqueous solution refers to a pH of 6.0 or more and 8.0 or less. Since it is neutral, it hardly affects the moldability of the decorative board, such as molding time and surface hardness.
- the amount of external addition of water-soluble metal salt to the decorative laminate base paper dry coverage 0.5 g / m 2 or more 3.0 g / m 2 or less in range (solid content) is preferable. If the dry adhesion amount of the water-soluble metal salt is too small, sufficient color developability tends not to be obtained. When the dry adhesion amount of the water-soluble metal salt is too large, the impregnation suitability of the thermosetting resin tends to be deteriorated.
- thermosetting resin for impregnation
- water-soluble polymer binders such as starch and PVA may deteriorate the suitability of the thermosetting resin for impregnation, it is preferable not to be blended in the water-soluble metal salt coating solution or impregnating solution in the present invention.
- the decorative board base paper for ink jet printing of the present invention obtained as described above is printed on the printing surface by ink jet printing.
- the ink jet printing method is not particularly limited.
- the ink is not particularly limited.
- the pigment ink may be either a solvent-based pigment ink or an aqueous pigment ink.
- the printed matter printed by inkjet printing can be processed into a thermosetting resin decorative board by a known method as a surface decorative material.
- the obtained decorative board is not particularly limited, and can be used as a surface decorative material for a high-pressure melamine decorative board, a low-pressure melamine decorative board, a polyester decorative board, and a dup decorative board.
- KSH-801P used has a basis weight of 80 g / m 2 , smoothness (Oken type smoothness) of 120 seconds, air permeability (Oken type air permeability) of 25 seconds, and ash content of 32% (almost titanium oxide) Correspond to the content of KSH-801P is made by a long paper machine having a long screen, a multi-column dryer, and an on-machine calendar.
- Impregnation suitability of thermosetting resin The suitability of impregnation of thermosetting resin was adjusted to 20 ° C using a 55% aqueous solution of melamine resin used for high-pressure melamine decorative board as the thermosetting resin, It was soaked from the front surface and visually observed until the melamine resin soaked uniformly into the back of the paper, and the time taken was measured with a stopwatch. The lower the value, the better the impregnation suitability of the melamine resin. In consideration of the impregnation time of uncoated KSH-801P, in the present invention, 100 seconds or less, more preferably 50 seconds or less was considered good.
- Example 1 A 1% aqueous solution of calcium chloride (manufactured by Wako Pure Chemical Industries) was prepared.
- the dry adhesion amount was 0.6 g / m 2 .
- Example 2 A 4% aqueous solution of calcium chloride (manufactured by Wako Pure Chemical Industries) was prepared.
- the dry adhesion amount was 2.0 g / m 2 .
- Example 3 A 4% aqueous solution of magnesium chloride (manufactured by Wako Pure Chemical Industries) was prepared.
- the dry adhesion amount was 2.6 g / m 2 .
- Example 4 A 4% aqueous solution of magnesium sulfate (manufactured by Wako Pure Chemical Industries) was prepared.
- the dry adhesion amount was 2.1 g / m 2 .
- Example 5 A 4% aqueous solution of calcium acetate (manufactured by Wako Pure Chemical Industries) was prepared.
- the dry adhesion amount was 1.9 g / m 2 .
- LLKP hardwood bleached kraft pulp
- Comparative Example 1 A commercially available uncoated paper type inkjet paper (manufactured by Seiko Epson, double-sided high-quality plain paper, exclusive for inkjet) was used as Comparative Example 1.
- Comparative Example 2 A white base paper for printing, KSH-801P, was used as a decorative board base paper of Comparative Example 2.
- This paper was impregnated with the same impregnation solution as in Example 4.
- the dry adhesion amount was 1.8 g / m 2 .
- the dry adhesion amount was 1.1 g / m 2 .
- Comparative Example 8 assumes a general non-coated paper type inkjet paper (the decorative board base paper is a non-size-treated special paper that is not sized with a sizing agent).
- Table 1 shows the evaluation results of Examples 1 to 5, and Table 2 shows the evaluation results of Example 6.
- Table 3 shows the results of Comparative Example 1
- Table 4 shows Comparative Examples 2 to 5
- Table 5 shows Comparative Example 6
- Table 6 shows Comparative Example 7
- Table 7 shows the results of Comparative Example 8.
- Examples 1 to 6 corresponding to the present invention are excellent in ink jet printing suitability, excellent in impregnation suitability with thermosetting resin, and have a good print finish when used as a decorative board.
- Comparative Example 1 the suitability of impregnation with the thermosetting resin is inferior, and since there is no shielding power as a decorative board base paper, it is understood that the printing finish when the decorative board is used is poor.
- Comparative Example 3 it can be seen that good color developability cannot be obtained because the amount of the water-soluble metal salt is insufficient.
- Comparative Example 4 it can be seen that the amount of the water-soluble metal salt is too large and the suitability for impregnation with the thermosetting resin is poor.
- Comparative Example 5 it can be seen that sodium sulfate, which is another water-soluble metal salt, does not provide sufficient color developability and deteriorates the impregnation suitability of the thermosetting resin.
- Comparative Example 8 assumes a general non-coated paper type ink jet paper, but the impregnation suitability of the thermosetting resin is poor and there is no hiding power as a decorative board base paper. It turns out that the finish evaluation of is bad.
- the decorative board base paper of the present invention is excellent in ink jet printing suitability and excellent in melamine resin impregnation suitability, it can be expected to be used in a high pressure melamine decorative board using an ink jet printed product as a surface decorative material. In addition to high-pressure melamine decorative boards, it can be expected to develop into low-pressure melamine decorative boards, polyester decorative boards, and dup decorative boards.
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- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Ink Jet Recording Methods And Recording Media Thereof (AREA)
- Paper (AREA)
- Laminated Bodies (AREA)
- Ink Jet (AREA)
Abstract
Description
(1)隠蔽力を有しサイズ処理はしない化粧板原紙であって、塩化カルシウム、塩化マグネシウム、硫酸マグネシウム及び酢酸カルシウムの群からなる中性の水溶性金属塩の少なくとも1種を、少なくとも印刷面(おもて面)に外添し、水溶性金属塩の乾燥付着量(固形分)として0.5~3.0g/m2担持させてなることを特徴とするインクジェット印刷用化粧板原紙。
(2)酸化チタンが抄き込まれている(1)記載のインクジェット印刷用化粧板原紙。
(3)水溶性バインダーは外添されていない(1)記載のインクジェット印刷用化粧板原紙。
(4)隠蔽力を有しサイズ処理はしない化粧板原紙の製造方法であって、塩化カルシウム、塩化マグネシウム、硫酸マグネシウム及び酢酸カルシウムの群からなる中性の水溶性金属塩の少なくとも1種を、抄紙機のウエットプレス工程で印刷面側(おもて面側)からスプレー塗工することを特徴とするインクジェット印刷用化粧板原紙の製造方法。
(5)(1)のインクジェット印刷用化粧板原紙の印刷面にインクジェット印刷が施された印刷物を表面化粧材として用いた熱硬化性樹脂化粧板。
本発明において、インクジェット印刷用化粧板原紙の原材料、物性は従来の印刷用化粧板原紙を基本とするものであり、特に限定されるものではない。印刷用化粧板原紙の坪量は60g/m2以上110g/m2以下の範囲が一般的であり、王研式平滑度は50秒以上200秒以下の範囲、王研式透気度は米坪と平滑度にもよるが15秒以上30秒以下の範囲が一般的である。
<ベースとなる化粧板原紙>
本実施例では、インクジェット印刷用化粧板原紙のベースとなる化粧板原紙として、KJ特殊紙製の80g/m2品の印刷用白原紙である製品品番KSH-801Pを用いた。使用したKSH-801Pの坪量は80g/m2、平滑度(王研式平滑度)は120秒、透気度(王研式透気度)は25秒、灰分は32%(ほぼ酸化チタンの含有量に相当する)であった。尚、KSH-801Pは長網、多塔ドライヤー、オンマシンカレンダーを有する長網抄紙機にて抄造されている。
(1)熱硬化性樹脂の含浸適性
熱硬化性樹脂の含浸適性は、熱硬化性樹脂として高圧メラミン化粧板に用いられるメラミン樹脂の55%水溶液を用い、20℃に調整した後、紙のおもて面から浸み込ませ、紙の裏面までメラミン樹脂が均一に浸み込むまで目視で観察し、かかった時間をストップウオッチで測定した。数値が低い方がメラミン樹脂の含浸適性に優れている。未塗工のKSH-801Pの含浸時間を考慮し、本発明においては100秒以下、より好ましくは50秒以下を良好とした。
<発色性評価>
インクジェットプリンターにPX-V630(セイコーエプソン製)を用い、純正水性顔料インクを使用しておもて面(印刷面)に紫ベタ印刷した。印刷物の色相をマクベス分光光度計:CE―3100(サカタインクス製)で測色した。色相でa値が高い方が赤インクの発色が良いことを示している。本発明において、a値が20以上を発色性に優れるとした。
シャープ性はドット径をマイクロスコープ:VHX-500(キーエンス製)で観察することにより行った。ドット径が小さい方がシャープな画像となる。本発明において、ドット径60μm以下をシャープ性に優れるとした。
上記(2)で印刷した印刷物を下記の方法で化粧板に成型し、化粧板の色相をマクベス分光光度計:CE―3100(サカタインクス製)で測色した。本発明において、a値が20以上を化粧板としたときの印刷の仕上がりに優れるとした。
高圧メラミン化粧板に用いられるメラミン樹脂100部と、硬化剤0.2部、浸透剤1部を水に溶かした55%のメラミン樹脂含浸液に印刷物をどぶ漬け含浸して、原紙基準で含浸率100%~130%のメラミン樹脂含浸紙を得た。
次に、太田産業製のメラミン樹脂が含浸されたオーバーレイ紙の上に、太田産業製のフェノール樹脂が含浸されたコア紙を4枚重ね、さらにその上にメラミン樹脂含浸液を含浸した上記印刷物を載置し、更に太田産業製のメラミン樹脂が含浸されたオーバーレイ紙を載置した後、加熱加圧プレス機で、熱圧して高圧メラミン化粧板を得た。
塩化カルシウム(和光純薬製)の1%水溶液を調整した。この水溶液(pH=7.4)を含浸液として、印刷用白原紙KSH-801Pに含浸した。乾燥付着量は0.6g/m2だった。
塩化カルシウム(和光純薬製)の4%水溶液を調整した。この水溶液(pH=7.7)を含浸液として、印刷用白原紙KSH-801Pに含浸した。乾燥付着量は2.0g/m2だった。
塩化マグネシウム(和光純薬製)の4%水溶液を調整した。この水溶液(pH=7.6)を含浸液として、印刷用白原紙KSH-801Pに含浸した。乾燥付着量は2.6g/m2だった。
硫酸マグネシウム(和光純薬製)の4%水溶液を調整した。この水溶液(pH=7.5)を含浸液として、印刷用白原紙KSH-801Pに含浸した。乾燥付着量は2.1g/m2だった。
酢酸カルシウム(和光純薬製)の4%水溶液を調整した。この水溶液(pH=7.1)を含浸液として、印刷用白原紙KSH-801Pに含浸した。乾燥付着量は1.9g/m2だった。
広葉樹晒しクラフトパルプ(LBKP)100部をダブルディスクリファイナーで叩解し、400mlCSFとした。これに酸化チタン60部、及び無機凝結剤、湿潤紙力剤:ポリアクリルアミドエピクロロヒドリンを加え、アルミン酸ナトリウムでpHを8.3に調整した。これを調成種として手漉きシートマシンで手漉きし、ワイヤー上に形成された湿紙シートに、塩化カルシウム(和光純薬製)の8%水溶液(pH=7.7)をスプレーし、米坪81.9g/m2、灰分34%の紙を得た。このときの塩化カルシウムの乾燥付着量は0.8g/m2であった。
市販の非塗工紙タイプのインクジェット用紙(セイコーエプソン製、両面上質普通紙、インクジェット専用)を比較例1とした。
印刷用白原紙KSH-801Pを比較例2の化粧板原紙とした。
塩化カルシウム(和光純薬製)の0.5%水溶液(pH=7.2)を調整した。この水溶液を含浸液として、印刷用白原紙KSH-801Pに含浸した。乾燥付着量は0.3g/m2だった。
硫酸マグネシウム(和光純薬製)の8%水溶液(pH=7.6)を調整した。この水溶液を含浸液として、印刷用白原紙KSH-801Pに含浸した。乾燥付着量は5.1g/m2だった。
硫酸ナトリウム(和光純薬製)の4%水溶液を調整した。この水溶液(pH=7.5)を含浸液として、印刷用白原紙KSH-801Pに含浸した。乾燥付着量は1.8g/m2だった。
広葉樹晒しクラフトパルプ(LBKP)100部をダブルディスクリファイナーで叩解し、400mlCSFとした。これにタルク50部、及び無機凝結剤、湿潤紙力剤:ポリアクリルアミドエピクロロヒドリンを加え、アルミン酸ナトリウムでpHを8.3に調整した。これを調成種として手漉きシートマシンで手漉きして米坪79.5g/m2、灰分28%のベースの紙を得た。
広葉樹晒しクラフトパルプ(LBKP)100部をダブルディスクリファイナーで叩解し、400mlCSFとした。これに酸化チタン60部、及び無機凝結剤、湿潤紙力剤:ポリアクリルアミドエピクロロヒドリンを加え、アルミン酸ナトリウムでpHを8.3に調整し、更に硫酸マグネシウム(和光純薬製)8部添加し、これを調成種として手漉きシートマシンで手漉きして米坪78.5g/m2、灰分33%の紙を得た。
針葉樹晒しクラフトパルプ(NBKP)10部と広葉樹晒しクラフトパルプ(LBKP)90部をダブルディスクリファイナーで叩解し、470mlCSFとした。これに炭酸カルシウム10部、及び両性でんぷん0.8部、硫酸アルミニム0.6部、内添用サイズ剤AS-263(荒川化学製)、湿潤紙力剤:ポリアクリルアミドエピクロロヒドリンを加え、これを調成種として手漉きシートマシンで手漉きして米坪82.0g/m2、灰分6.0%の紙を得た。
比較例3では水溶性金属塩の量が不十分なため、良好な発色性が得られないことがわかる。比較例4は水溶性金属塩の量が多すぎて、熱硬化性樹脂の含浸適性が悪いことがわかる。比較例5では他の水溶性金属塩である硫酸ナトリウムでは十分な発色性が得られず、且つ熱硬化性樹脂の含浸適性を悪化させることがわかる。
Claims (5)
- 隠蔽力を有しサイズ処理はしない化粧板原紙であって、塩化カルシウム、塩化マグネシウム、硫酸マグネシウム及び酢酸カルシウムの群からなる中性の水溶性金属塩の少なくとも1種を、少なくとも印刷面(おもて面)に外添し、水溶性金属塩の乾燥付着量(固形分)として0.5~3.0g/m2担持させてなることを特徴とするインクジェット印刷用化粧板原紙。
- 酸化チタンが抄き込まれている請求項1記載のインクジェット印刷用化粧板原紙。
- 水溶性バインダーは外添されていない請求項1記載のインクジェット印刷用化粧板原紙。
- 隠蔽力を有しサイズ処理はしない化粧板原紙の製造方法であって、塩化カルシウム、塩化マグネシウム、硫酸マグネシウム及び酢酸カルシウムの群からなる中性の水溶性金属塩の少なくとも1種を、抄紙機のウエットプレス工程で印刷面側(おもて面側)からスプレー塗工することを特徴とするインクジェット印刷用化粧板原紙の製造方法。
- 請求項1のインクジェット印刷用化粧板原紙の印刷面にインクジェット印刷が施された印刷物を表面化粧材として用いた熱硬化性樹脂化粧板。
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US14/647,415 US20150298480A1 (en) | 2012-11-27 | 2013-11-27 | Base paper for decorative laminate and decorative laminate |
JP2014549878A JP5689568B2 (ja) | 2012-11-27 | 2013-11-27 | 化粧板原紙及び化粧板 |
CN201380061974.4A CN104812588A (zh) | 2012-11-27 | 2013-11-27 | 装饰性层压板原纸和装饰性层压板 |
EP13859164.9A EP2927011A4 (en) | 2012-11-27 | 2013-11-27 | BASIC PAPER FOR A DECORATIVE LAYER AND DECORATIVE LAYER |
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EP3456877A1 (en) | 2017-09-08 | 2019-03-20 | Ricoh Company, Limited | Method and apparatus for manufacturing printing paper for decorative boards |
WO2019098155A1 (en) | 2017-11-15 | 2019-05-23 | Ricoh Company, Ltd. | Laminate, method of manufacturing laminate, and device for manufacturing laminate |
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JP5730923B2 (ja) * | 2013-02-18 | 2015-06-10 | Kj特殊紙株式会社 | 化粧板原紙及び化粧板 |
WO2018017089A1 (en) | 2016-07-21 | 2018-01-25 | Hewlett-Packard Development Company, L.P. | Ink fixative solution |
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US20150298480A1 (en) | 2015-10-22 |
EP2927011A1 (en) | 2015-10-07 |
JP5689568B2 (ja) | 2015-03-25 |
CN104812588A (zh) | 2015-07-29 |
EP2927011A4 (en) | 2015-11-11 |
JPWO2014084280A1 (ja) | 2017-01-05 |
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