JP2020075442A - Decorative paper - Google Patents

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JP2020075442A
JP2020075442A JP2018211427A JP2018211427A JP2020075442A JP 2020075442 A JP2020075442 A JP 2020075442A JP 2018211427 A JP2018211427 A JP 2018211427A JP 2018211427 A JP2018211427 A JP 2018211427A JP 2020075442 A JP2020075442 A JP 2020075442A
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thermoplastic resin
layer
resin layer
paper
base paper
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JP7487447B2 (en
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直樹 徳本
Naoki Tokumoto
直樹 徳本
賢吾 穂積
Kengo Hozumi
賢吾 穂積
隆弘 伊瀬谷
Takahiro Iseya
隆弘 伊瀬谷
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Toppan Inc
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Toppan Printing Co Ltd
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Abstract

To provide a decorative paper excellent in water resistance, oil resistance, and curling properties.SOLUTION: A decorative paper comprises a base paper 1, a thermoplastic resin layer 2 provided on one surface 1a side of the base paper 1, a pattern layer 3 provided on the surface 2a side of the thermoplastic resin layer 2 opposite to the base paper 1, and a surface protective layer 4 provided on the surface 3a side of the pattern layer 3 opposite to the thermoplastic resin layer 2.SELECTED DRAWING: Figure 1

Description

本発明は、化粧紙に関する。   The present invention relates to decorative paper.

従来、例えば、熱可塑性樹脂層の一方の面側に、原紙及び絵柄層がこの順に積層されてなる化粧紙が提案されている(例えば、特許文献1参照。)。   Conventionally, for example, a decorative paper has been proposed in which a base paper and a pattern layer are laminated in this order on one surface side of a thermoplastic resin layer (see, for example, Patent Document 1).

特開2001−129959号公報JP 2001-129959A

しかしながら、特許文献1に記載の化粧紙では、熱可塑性樹脂層と絵柄層との間に原紙が存在するため、耐水性や耐油性が低下する可能性がある。
本発明は、上記のような点に着目したもので、耐水性や耐油性、カール性に優れた化粧紙を提供することを目的としている。
However, in the decorative paper described in Patent Document 1, since the base paper exists between the thermoplastic resin layer and the pattern layer, water resistance and oil resistance may be reduced.
The present invention focuses on the above points, and an object thereof is to provide a decorative paper excellent in water resistance, oil resistance, and curl.

上記課題を解決するために、本発明の一態様は、(a)原紙と、(b)原紙の一方の面側に設けられた熱可塑性樹脂層と、(c)熱可塑性樹脂層の原紙と反対側の面側に設けられた絵柄層と、(d)絵柄層の熱可塑性樹脂層と反対側の面側に設けられた表面保護層と、を備え、(e)熱可塑性樹脂層の厚さは、10μm以上で、且つ、原紙の厚さに対して20%以上である化粧紙であることを要旨とする。   In order to solve the above problems, one embodiment of the present invention includes (a) a base paper, (b) a thermoplastic resin layer provided on one surface side of the base paper, and (c) a base paper of the thermoplastic resin layer. A pattern layer provided on the opposite surface side; and (d) a surface protective layer provided on the surface opposite to the thermoplastic resin layer of the picture layer, and (e) the thickness of the thermoplastic resin layer. The summary is that the decorative paper is 10 μm or more and 20% or more with respect to the thickness of the base paper.

本発明の一態様によれば、熱可塑性樹脂層と絵柄層との間に原紙が存在せず、また、原紙の厚さが薄くなり過ぎないため、耐水性や耐油性、カール性に優れた化粧紙を提供できる。   According to one aspect of the present invention, since the base paper does not exist between the thermoplastic resin layer and the pattern layer, and the thickness of the base paper does not become too thin, it is excellent in water resistance, oil resistance, and curling property. Can provide decorative paper.

本発明の実施形態に係る化粧紙を表す断面図である。It is sectional drawing showing the decorative paper which concerns on embodiment of this invention.

次に、本発明の実施形態について図面を参照して説明する。
ここで、図面は模式的なものであり、厚みと平面寸法との関係、各層の厚みの比率等は現実のものとは異なる。また、以下に示す実施形態は、本発明の技術的思想を具体化するための構成を例示するものであって、本発明の技術的思想は、構成部品の材質、形状、及び構造等が下記のものに特定するものでない。本発明の技術的思想は、特許請求の範囲に記載された請求項が規定する技術的範囲内において、種々の変更を加えることができる。
Next, an embodiment of the present invention will be described with reference to the drawings.
Here, the drawings are schematic, and the relationship between the thickness and the plane dimension, the thickness ratio of each layer, and the like are different from the actual ones. Further, the embodiments described below exemplify a configuration for embodying the technical idea of the present invention, and the technical idea of the present invention is that the material, shape, structure, etc. of the constituent parts are as follows. It is not specific to one. The technical idea of the present invention can be variously modified within the technical scope defined by the claims described in the claims.

(化粧紙)
本実施形態の化粧紙10は、図1に示すように、原紙1の一方の面1a側に、熱可塑性樹脂層2、絵柄層3及び表面保護層4がこの順に積層されて形成されている。絵柄層3は、熱可塑性樹脂層2の直上に設けられている。
(Decorative paper)
As shown in FIG. 1, the decorative paper 10 of the present embodiment is formed by laminating a thermoplastic resin layer 2, a pattern layer 3, and a surface protective layer 4 in this order on one surface 1a side of a base paper 1. .. The pattern layer 3 is provided directly on the thermoplastic resin layer 2.

(原紙)
原紙1は、化粧紙10のベースとなる層である。例えば、セルロース繊維間に樹脂を含む紙間強化紙を用いることができる。紙間強化紙としては、紙間強化紙の全質量に対して、セルロース繊維を50質量%以上含むものが好ましい。また、紙間強化紙の厚さは、15μm以上60μm未満が好ましい。また、紙間強化紙の坪量は、10g/m2〜50g/m2が好ましい。これにより、原紙1に厚みとコシとを持たせることができる。そのため、化粧紙10がシワになり難く、化粧紙10のカールの発生を防止することができる。
(Base paper)
The base paper 1 is a base layer of the decorative paper 10. For example, a paper-reinforced paper containing a resin between cellulose fibers can be used. The inter-paper reinforced paper is preferably one containing 50% by mass or more of cellulose fiber with respect to the total mass of the inter-paper reinforced paper. Further, the thickness of the paper-reinforced paper is preferably 15 μm or more and less than 60 μm. The basis weight of the paper between the reinforced paper is, 10g / m 2 ~50g / m 2 is preferred. As a result, the base paper 1 can be provided with thickness and elasticity. Therefore, the decorative paper 10 is less likely to wrinkle, and the occurrence of curling of the decorative paper 10 can be prevented.

(熱可塑性樹脂層)
熱可塑性樹脂層2は、防湿性を有するシート状の層である。防湿性とは、水蒸気を通し難い性質である。例えば、融点が100℃以上200℃未満のオレフィン系樹脂等の熱可塑性樹脂が好ましい。熱可塑性樹脂層2の厚さは、10μm以上で、且つ、原紙1の厚さに対して20%以上であることが好ましい。これにより、十分な防湿効果を得ることができる。また、熱可塑性樹脂層2の厚さの上限値としては、原紙1の厚さに対して90%以下であることが好ましい。これにより、化粧紙10のカールを抑制することができる。
(Thermoplastic resin layer)
The thermoplastic resin layer 2 is a sheet-like layer having moisture resistance. Moisture proof is a property in which it is difficult for water vapor to pass through. For example, a thermoplastic resin such as an olefin resin having a melting point of 100 ° C. or higher and lower than 200 ° C. is preferable. The thickness of the thermoplastic resin layer 2 is preferably 10 μm or more and 20% or more with respect to the thickness of the base paper 1. Thereby, a sufficient moistureproof effect can be obtained. Further, the upper limit of the thickness of the thermoplastic resin layer 2 is preferably 90% or less with respect to the thickness of the base paper 1. Thereby, the curl of the decorative paper 10 can be suppressed.

また、原紙1と熱可塑性樹脂層2との層間強度は、1.1N/cm以上であることが好ましい。これにより、原紙1から熱可塑性樹脂層2を剥がれ難くすることができる。
また、熱可塑性樹脂層2の直上に絵柄層3、つまり印刷インキからなる層が形成されるため、熱可塑性樹脂層2の絵柄層3が設けられる面には、濡れ性向上のための処理がなされる。濡れ性向上のための処理としては、例えば、コロナ処理を用いることができる。
また、熱可塑性樹脂層2には、耐候劣化を防止するため、酸化防止剤や紫外線吸収剤等の各種添加剤を適宜添加してもよい。
Further, the interlayer strength between the base paper 1 and the thermoplastic resin layer 2 is preferably 1.1 N / cm or more. This makes it difficult for the thermoplastic resin layer 2 to peel off from the base paper 1.
Further, since the pattern layer 3, that is, a layer made of printing ink, is formed directly on the thermoplastic resin layer 2, the surface of the thermoplastic resin layer 2 on which the pattern layer 3 is provided is treated to improve wettability. Done. As the treatment for improving the wettability, for example, corona treatment can be used.
Further, various additives such as an antioxidant and an ultraviolet absorber may be appropriately added to the thermoplastic resin layer 2 in order to prevent weather deterioration.

(絵柄層)
絵柄層3は、化粧紙10に絵柄による意匠性を付与するための層である。絵柄層3は、原紙1の一方の面1a上に、面1a全体を覆い隠蔽性を確保するためのベタインキ層5と、下地色以外の絵柄を表す柄インキ層6と、がこの順に積層されて形成されている。ベタインキ層5及び柄インキ層6は、印刷インキやコーティング剤等を用いて形成される。
印刷インキ等としては、特に制限はなく、従来の化粧紙において絵柄層に使用されている印刷インキ等と同様のものを使用できる。例えば、アクリルインキを用いることができる。アクリルインキとしては、例えば、アクリルポリオール系ビヒクルにイソシアネート硬化剤を配合してなる2液硬化型ウレタン樹脂系インキを使用することができる。また、印刷方法としては、例えば、グラビア印刷法、オフセット印刷法を用いることができる。また、絵柄としては、任意の絵柄を用いることができ、例えば、木目柄、石目柄、布目柄、コルク柄、抽象柄等或いはこれらの2種類以上の組み合わせ等を用いることできる。
なお、本実施形態では、絵柄層3がベタインキ層5と柄インキ層6とを備える例を示したが、他の構成も採用できる。例えば、絵柄層3からベタインキ層5を省略してもよい。
(Pattern layer)
The pattern layer 3 is a layer for giving the decorative paper 10 a design property by the pattern. The pattern layer 3 is formed by laminating, on one surface 1a of the base paper 1, a solid ink layer 5 for covering the entire surface 1a to ensure hiding and a pattern ink layer 6 representing a pattern other than the background color in this order. Is formed. The solid ink layer 5 and the pattern ink layer 6 are formed by using printing ink, coating agent or the like.
The printing ink and the like are not particularly limited, and the same printing ink and the like used for the pattern layer in the conventional decorative paper can be used. For example, acrylic ink can be used. As the acrylic ink, it is possible to use, for example, a two-component curable urethane resin-based ink obtained by blending an acrylic polyol-based vehicle with an isocyanate curing agent. As a printing method, for example, a gravure printing method or an offset printing method can be used. Further, as the design, any design can be used, and for example, a wood grain pattern, a stone grain pattern, a cloth grain pattern, a cork pattern, an abstract pattern, or the like, or a combination of two or more of these can be used.
Note that, in the present embodiment, the example in which the pattern layer 3 includes the solid ink layer 5 and the pattern ink layer 6 has been shown, but other configurations can be adopted. For example, the solid ink layer 5 may be omitted from the pattern layer 3.

(表面保護層)
表面保護層4は、化粧紙10の表面を保護するための層である。表面保護層4の材料としては、特に制限はなく、従来の化粧紙で表面保護層に使用されている材料と同様のものを使用できる。例えば、アクリルウレタン系樹脂、電離放射線硬化型樹脂を用いることができる。アクリルウレタン系樹脂としては、例えば、アクリルポリオール化合物を主剤とし、イソシアネート化合物を硬化剤とした反応生成物を採用できる。また、電離放射線硬化性樹脂としては、例えば、電子線や紫外線等の電離放射線の照射により架橋反応する性質を有する(メタ)アクリロイル基等の重合性不飽和結合を有するプレポリマー、オリゴマー及びモノマーの少なくとも何れかを主成分とする組成物を採用することができる。
表面保護層4は、単層でもよく、2層〜3層の複層でもよい。複層とした場合、マット樹脂とグロス樹脂との塗り分けによって、グロスマット表現を付与することもできる。
(Surface protection layer)
The surface protective layer 4 is a layer for protecting the surface of the decorative paper 10. The material for the surface protective layer 4 is not particularly limited, and the same materials as those used for the surface protective layer in conventional decorative paper can be used. For example, acrylic urethane type resin and ionizing radiation curable resin can be used. As the acrylic urethane-based resin, for example, a reaction product containing an acrylic polyol compound as a main component and an isocyanate compound as a curing agent can be adopted. The ionizing radiation curable resin includes, for example, prepolymers, oligomers and monomers having a polymerizable unsaturated bond such as (meth) acryloyl group having a property of undergoing a crosslinking reaction upon irradiation with ionizing radiation such as electron beam or ultraviolet ray. A composition containing at least one of them as a main component can be adopted.
The surface protective layer 4 may be a single layer or a multilayer of 2 to 3 layers. In the case of multiple layers, it is also possible to impart a gloss matte expression by separately coating the matte resin and the gloss resin.

以上説明したように、本発明の実施形態に係る化粧紙10では、原紙1と、原紙1の一方の面1a側に設けられた熱可塑性樹脂層2と、熱可塑性樹脂層2の原紙1と反対側の面2a側に設けられた絵柄層3と、絵柄層3の熱可塑性樹脂層2と反対側の面3a側に設けられた表面保護層4と、を備えるようにした。それゆえ、熱可塑性樹脂層2の直上に絵柄層3を有し、熱可塑性樹脂層2と絵柄層3との間に原紙1が存在せず、また原紙1の厚さが薄くなり過ぎないため、耐水性や耐油性、カール性に優れた化粧紙10を提供できる。
また、熱可塑性樹脂層2の下に原紙1を有するため、化粧紙10裏面にプライマー処理を施すことなく接着性に優れ、高温ラミネート及び熱溶融型接着剤塗布を行った際の寸法安定性に優れる。また、従来のVSプリント(原紙/熱可塑性樹脂層/原紙)と異なり、熱可塑性樹脂層2両側に原紙1を積層する必要がないため、製造コストを低減できる。
As described above, in the decorative paper 10 according to the embodiment of the present invention, the base paper 1, the thermoplastic resin layer 2 provided on the one surface 1a side of the base paper 1, and the base paper 1 of the thermoplastic resin layer 2 are provided. The pattern layer 3 provided on the opposite surface 2a side and the surface protective layer 4 provided on the opposite surface 3a side of the pattern layer 3 to the thermoplastic resin layer 2 were provided. Therefore, the pattern layer 3 is provided directly on the thermoplastic resin layer 2, the base paper 1 does not exist between the thermoplastic resin layer 2 and the pattern layer 3, and the thickness of the base paper 1 does not become too thin. The decorative paper 10 having excellent water resistance, oil resistance, and curl can be provided.
In addition, since the base paper 1 is provided under the thermoplastic resin layer 2, the adhesiveness is excellent without applying a primer treatment to the back surface of the decorative paper 10, and the dimensional stability upon high temperature lamination and application of a hot melt adhesive is improved. Excel. Further, unlike the conventional VS print (base paper / thermoplastic resin layer / base paper), it is not necessary to stack the base paper 1 on both sides of the thermoplastic resin layer 2, so that the manufacturing cost can be reduced.

さらに、Vカット加工等の曲げ加工を行う際、従来のプラスチックシートでは、伸びが大きく、プラスチックシートの白化等が生じる可能性がある。また、VSプリント(原紙/熱可塑性樹脂層/原紙)では、原紙が延びに追従できず、亀裂が発生する可能性がある。これに対し、本発明の実施形態に係る化粧紙10では、下層の原紙1が伸びを抑制し、上層の熱可塑性樹脂層2が曲げに追従するため、好適な曲げ加工適正を有するものとなる。
また、本発明の実施形態に係る化粧紙10では、原紙1と熱可塑性樹脂層2との層間強度を、1.1N/cm以上とした。それゆえ、原紙1と熱可塑性樹脂層2との剥離強さの低下を抑制でき、原紙1から熱可塑性樹脂層2を剥がれ難くすることができる。
Furthermore, when performing a bending process such as a V-cut process, the conventional plastic sheet has a large elongation, which may cause whitening of the plastic sheet. Further, in VS printing (base paper / thermoplastic resin layer / base paper), the base paper cannot follow the extension and cracks may occur. On the other hand, in the decorative paper 10 according to the embodiment of the present invention, the lower base paper 1 suppresses elongation and the upper thermoplastic resin layer 2 follows bending, and thus has suitable bending workability. ..
In the decorative paper 10 according to the embodiment of the present invention, the interlayer strength between the base paper 1 and the thermoplastic resin layer 2 is 1.1 N / cm or more. Therefore, a decrease in peel strength between the base paper 1 and the thermoplastic resin layer 2 can be suppressed, and the thermoplastic resin layer 2 can be hardly peeled off from the base paper 1.

また、本発明の実施形態に係る化粧紙10は、熱可塑性樹脂層2の厚さを、10μm以上で、且つ、原紙1の厚さに対して、20%以上90%以下とした。それゆえ、十分な防湿効果を持たせることができ、また、化粧紙10のカールの発生を防止できる。
また、本発明の実施形態に係る化粧紙10では、絵柄層3は、熱可塑性樹脂層2の直上に設けるようにした。それゆえ、耐水性や耐油性をより向上することができる。
また、本発明の実施形態に係る化粧紙10では、絵柄層3は、ベタインキ層5を含み、ベタインキ層5は、イソシアネート硬化剤を含むようにした。それゆえ、Vカット加工後に優れたインキ密着性を有するため、インキの剥がれを抑制することができる。
Further, in the decorative paper 10 according to the embodiment of the present invention, the thickness of the thermoplastic resin layer 2 is 10 μm or more and 20% or more and 90% or less of the thickness of the base paper 1. Therefore, a sufficient moisture-proof effect can be provided, and curling of the decorative paper 10 can be prevented.
Further, in the decorative paper 10 according to the embodiment of the present invention, the pattern layer 3 is provided immediately above the thermoplastic resin layer 2. Therefore, water resistance and oil resistance can be further improved.
Further, in the decorative paper 10 according to the embodiment of the present invention, the pattern layer 3 includes the solid ink layer 5, and the solid ink layer 5 includes the isocyanate curing agent. Therefore, since it has excellent ink adhesion after V-cut processing, it is possible to suppress the peeling of the ink.

以下に、本発明の実施形態に係る化粧紙10の実施例及び比較例について説明する。なお、本発明は、下記の実施例に限定されるものではない。   Examples and comparative examples of the decorative paper 10 according to the embodiment of the present invention will be described below. The present invention is not limited to the examples below.

(実施例1)
まず、原紙1として、天間特殊製紙株式会社製HPN29を用意した。続いて、原紙1の一方の面1aに、酸化防止剤、UVA、HALSを含んだMDPEを、溶融押出成形方式で積層して、熱可塑性樹脂層2を形成した。熱可塑性樹脂層2の厚さは、20μmとした。原紙1と熱可塑性樹脂層2との積層体は、カールが少なかった。続いて、熱可塑性樹脂層2にコロナ処理を施した。熱可塑性樹脂層2の濡れ指数は、50dynとなった。さらに、熱可塑性樹脂層2と原紙1との層間強度は、19.6N/cmとなった。
層間強度の計測では、例えば、原紙1と熱可塑性樹脂層2との積層体の原紙1側の面をMDF等の基材に両面テープで固定した後、熱可塑性樹脂層2が切れないように25mm幅のセロハンテープで補強してから、ロードセル式引張試験機で測定した。その際、測定条件は200mm/min、測定幅(試験片の幅)は25mmとした。
(Example 1)
First, HPM29 manufactured by Tenma Special Paper Co., Ltd. was prepared as the base paper 1. Subsequently, MDPE containing an antioxidant, UVA, and HALS was laminated on one surface 1a of the base paper 1 by a melt extrusion molding method to form a thermoplastic resin layer 2. The thickness of the thermoplastic resin layer 2 was 20 μm. The curl of the laminate of the base paper 1 and the thermoplastic resin layer 2 was small. Then, the thermoplastic resin layer 2 was subjected to corona treatment. The wetting index of the thermoplastic resin layer 2 was 50 dyn. Furthermore, the interlayer strength between the thermoplastic resin layer 2 and the base paper 1 was 19.6 N / cm.
In the measurement of the interlaminar strength, for example, after fixing the surface of the laminate of the base paper 1 and the thermoplastic resin layer 2 on the base paper 1 side to a base material such as MDF with a double-sided tape, the thermoplastic resin layer 2 is not cut. It was reinforced with a cellophane tape having a width of 25 mm and then measured with a load cell type tensile tester. At that time, the measurement condition was 200 mm / min, and the measurement width (width of the test piece) was 25 mm.

続いて、原紙1と熱可塑性樹脂層2との積層体の熱可塑性樹脂層2側の表面に、東洋インキ性PCNTインキを用いて、グラビア印刷で、ベタインキ層5(イソシアネート硬化剤添加)、柄インキ層6を印刷して、絵柄層3を形成した。続いて、絵柄層3の表面に、東洋インキ製トップコート樹脂UR260NTマットを全面に塗布した後、絵柄層3の絵柄と同調した抜き版でグロス樹脂を更に塗布して、表面保護層4を形成した。続いて、50℃で24時間養生して、トップコート樹脂に添加されている硬化剤を反応させた。これにより、実施例1の化粧紙10を作製した。化粧紙10の透湿度は、JIS-0208カップ法(40℃90%RH条件)で測定したところ、17g/m2・hとなった。
続いて、化粧紙10の原紙1側の面に、3M製EVAホットメルト接着剤を、ロッドコーターで30g/m2溶融塗布した。そして、120℃×30秒、2kgf/cm2の圧力で3mm厚のMDF基材と接着させた。これにより、実施例1の化粧板を作製した。
Then, the surface of the laminate of the base paper 1 and the thermoplastic resin layer 2 on the thermoplastic resin layer 2 side was gravure-printed using a Toyo Ink-based PCNT ink by a solid ink layer 5 (with an isocyanate curing agent added) and a pattern. The ink layer 6 was printed to form the pattern layer 3. Subsequently, the top coat resin UR260NT mat manufactured by Toyo Ink Co., Ltd. is applied to the entire surface of the pattern layer 3, and then the gloss resin is further applied by a punching plate synchronized with the pattern of the pattern layer 3 to form the surface protective layer 4. did. Then, it was aged at 50 ° C. for 24 hours to react the curing agent added to the top coat resin. Thus, the decorative paper 10 of Example 1 was produced. The moisture permeability of the decorative paper 10 was 17 g / m 2 · h when measured by the JIS-0208 cup method (40 ° C, 90% RH condition).
Subsequently, EVA hot melt adhesive manufactured by 3M was melt-coated with a rod coater at 30 g / m 2 on the surface of the decorative paper 10 on the side of the base paper 1. Then, it was bonded to a 3 mm thick MDF substrate at 120 ° C. for 30 seconds under a pressure of 2 kgf / cm 2 . Thereby, the decorative board of Example 1 was produced.

(実施例2)
実施例2では、ベタインキ層5のイソシアネート硬化剤を省略した。それ以外は実施例1と同様にして、実施例2の化粧紙10及び化粧板を作製した。
(実施例3)
実施例3では、熱可塑性樹脂層2の厚さを40μmとした。それ以外は実施例1と同様にして、実施例3の化粧紙10及び化粧板を作製した。
(実施例4)
実施例4では、原紙1と熱可塑性樹脂層2との層間強度を0.6N/cmとした。それ以外は実施例1と同様にして、実施例4の化粧紙10及び化粧板を作製した。
(比較例1)
比較例1では、原紙1の厚さを100μmとした。それ以外は実施例1と同様にして、比較例1の化粧紙10及び化粧板を作製した。
(Example 2)
In Example 2, the isocyanate curing agent of the solid ink layer 5 was omitted. Other than that was carried out similarly to Example 1, and produced the decorative paper 10 and the decorative board of Example 2.
(Example 3)
In Example 3, the thickness of the thermoplastic resin layer 2 was 40 μm. Other than that was carried out similarly to Example 1, and produced the decorative paper 10 and the decorative board of Example 3.
(Example 4)
In Example 4, the interlayer strength between the base paper 1 and the thermoplastic resin layer 2 was set to 0.6 N / cm. Other than that was carried out similarly to Example 1, and produced the decorative paper 10 and the decorative board of Example 4.
(Comparative Example 1)
In Comparative Example 1, the thickness of the base paper 1 was 100 μm. Other than that was carried out similarly to Example 1, and produced the decorative paper 10 and the decorative board of Comparative Example 1.

(性能評価)
実施例1〜4、比較例1の化粧紙10に対して、以下の性能評価を行った。
(平面引張強度評価)
平面引張強度評価では、JAS合板規格の平面引張試験によって接着力を計測した。そして、0.4N/mm2以上の場合を「○」とし、0.4N/mm2未満0.2N/mm2以上の場合を「△」とし、0.2N/mm2未満の場合を「×」とした。
(カール性評価)
カール性評価では、化粧紙10を10cm角にカットし、平面の上に25℃50%RH条件で48時間静置した。そして、4つの角と平面との距離の平均が3cm以下となった場合を「○」とし、3cmより大きく5cm以下となった場合を「△」とし、5cmより大きくなった場合を「×」とした。
(Performance evaluation)
The following performance evaluations were performed on the decorative papers 10 of Examples 1 to 4 and Comparative Example 1.
(Evaluation of plane tensile strength)
In the plane tensile strength evaluation, the adhesive force was measured by a plane tensile test of JAS plywood standard. Then, 0.4N / mm 2 or more of the case as "○", in the case of 0.4N / mm 2 less than 0.2N / mm 2 or more as "△", a case of less than 0.2N / mm 2 " X ".
(Curl property evaluation)
In the curl evaluation, the decorative paper 10 was cut into a 10 cm square and left on a flat surface for 48 hours at 25 ° C. and 50% RH. And, when the average of the distances between the four corners and the plane is 3 cm or less, it is "○", when it is more than 3 cm and 5 cm or less, it is "△", and when it is more than 5 cm, it is "x". And

(Vカットインキ剥離評価)
Vカットインキ剥離評価では、Vカット加工を施して化粧紙10を90°折り曲げた後、曲げ部分をコインで10往復擦った。そして、印刷インキの剥離が発生しなかった場合を「○」とし、印刷インキの剥離を僅かに生じた場合を「△」とし、大きな印刷インキの剥離を生じた場合を「×」とした。
(透湿度評価)
透湿度評価では、JIS−0208カップ法(40度90%RH)で測定した。そして、透湿度が30g/m2・h未満の場合を「○」とし、30g/m2・h以上40g/m2・h未満の場合を「△」とし、40g/m2・h以上の場合を「×」とした。
(V-cut ink peeling evaluation)
In the V-cut ink peeling evaluation, after the V-cut processing was performed and the decorative paper 10 was bent 90 °, the bent portion was rubbed 10 times with a coin. Then, when the peeling of the printing ink did not occur, it was designated as “◯”, when the peeling of the printing ink slightly occurred, it was designated as “Δ”, and when the peeling of the printing ink was large, it was designated as “x”.
(Permeability evaluation)
In the moisture permeability evaluation, it was measured by the JIS-0208 cup method (40 degrees 90% RH). When the water vapor transmission rate is less than 30 g / m 2 · h, “◯” is given. When the water vapor permeability is 30 g / m 2 · h or more and less than 40 g / m 2 · h, “△” is given, and 40 g / m 2 · h or more is given. The case was designated as "x".

(評価結果)
この評価結果を表1に示す。
(Evaluation results)
The evaluation results are shown in Table 1.

Figure 2020075442
Figure 2020075442

上記表1に示すように、実施例1〜4の化粧紙10では、「平面引張強度」「カール性」「Vカット部インキ剥離」「透湿度」の評価結果は、「○」又は「△」となって、いずれも合格となった。具体的には、実施例1では、「平面引張強度」「カール性」「Vカット部インキ剥離」「透湿度」のすべてが「○」となった。しかしながら、実施例2では、ベタインキ層5のイソシアネート硬化剤を省略したため、「Vカット部インキ剥離」が「△」となった。また、実施例3では、熱可塑性樹脂層2の厚さを40μmとした(厚くした)ため、「カール性」が「△」となった。また実施例4では、原紙1と熱可塑性樹脂層2との層間強度を0.6N/cmとした(低くした)ため、「平面引張強度」が「△」となった。   As shown in Table 1 above, in the decorative papers 10 of Examples 1 to 4, the evaluation results of “planar tensile strength”, “curl property”, “V-cut portion ink peeling” and “moisture permeability” are “◯” or “Δ”. "And all passed. Specifically, in Example 1, all of “planar tensile strength”, “curl”, “peeling of V cut portion ink”, and “moisture permeability” were “◯”. However, in Example 2, since the isocyanate curing agent of the solid ink layer 5 was omitted, the “V cut portion ink peeling” was “Δ”. Further, in Example 3, since the thickness of the thermoplastic resin layer 2 was 40 μm (thickened), the “curl property” was “Δ”. Further, in Example 4, since the interlayer strength between the base paper 1 and the thermoplastic resin layer 2 was set to 0.6 N / cm (lowered), the “planar tensile strength” was “Δ”.

一方、比較例1の化粧紙10は、熱可塑性樹脂層2の厚さを10μmとし、原紙1に対して熱可塑性樹脂層2の厚さを10%としたため、「透湿度」が不合格「×」となった。
したがって、実施例1〜4の化粧紙10は、比較例1の化粧紙10と異なり、「透湿度」に優れ、耐水性や耐油性に優れることが確認された。さらに、耐水性や耐油性だけでなく、カール性や平面引張強度、Vカットインキ剥離にも優れることが確認された。
On the other hand, in the decorative paper 10 of Comparative Example 1, the thickness of the thermoplastic resin layer 2 was 10 μm, and the thickness of the thermoplastic resin layer 2 was 10% with respect to the base paper 1. X ”.
Therefore, it was confirmed that the decorative papers 10 of Examples 1 to 4 were different from the decorative paper 10 of Comparative Example 1 in excellent in "moisture permeability" and excellent in water resistance and oil resistance. Furthermore, it was confirmed that not only the water resistance and oil resistance but also the curl property, the plane tensile strength, and the V-cut ink peeling are excellent.

1…原紙、1a…一方の面、2…熱可塑性樹脂層、2a…熱可塑性樹脂層の原紙と反対側の面、3…絵柄層、3a…絵柄層の熱可塑性樹脂層と反対側の面、4…表面保護層、5…ベタインキ層、6…柄インキ層、10…化粧紙   DESCRIPTION OF SYMBOLS 1 ... Base paper, 1a ... One surface, 2 ... Thermoplastic resin layer, 2a ... Surface of the thermoplastic resin layer opposite to the base paper, 3 ... Design layer, 3a ... Surface of the design layer opposite to the thermoplastic resin layer 4, surface protection layer, 5 solid ink layer, 6 pattern ink layer, 10 decorative paper

Claims (5)

原紙と、
前記原紙の一方の面側に設けられた熱可塑性樹脂層と、
前記熱可塑性樹脂層の前記原紙と反対側の面側に設けられた絵柄層と、
前記絵柄層の前記熱可塑性樹脂層と反対側の面側に設けられた表面保護層と、を備え、
前記熱可塑性樹脂層の厚さは、10μm以上で、且つ、前記原紙の厚さに対して20%以上であることを特徴とする化粧紙。
Base paper,
A thermoplastic resin layer provided on one surface side of the base paper,
A pattern layer provided on the surface side of the thermoplastic resin layer opposite to the base paper,
A surface protective layer provided on the surface side of the pattern layer opposite to the thermoplastic resin layer,
The decorative paper, wherein the thickness of the thermoplastic resin layer is 10 μm or more and 20% or more with respect to the thickness of the base paper.
前記原紙と前記熱可塑性樹脂層との層間強度は、1.1N/cm以上であることを特徴とする請求項1に記載の化粧紙。   The decorative paper according to claim 1, wherein the interlayer strength between the base paper and the thermoplastic resin layer is 1.1 N / cm or more. 前記熱可塑性樹脂層の厚さは、前記原紙の厚さに対して20%以上90%以下であることを特徴とする請求項1又は2に記載の化粧紙。   The thickness of the said thermoplastic resin layer is 20% or more and 90% or less with respect to the thickness of the said base paper, The decorative paper of Claim 1 or 2 characterized by the above-mentioned. 前記絵柄層は、前記熱可塑性樹脂層の直上に設けられていることを特徴とする請求項1から3の何れか1項に記載の化粧紙。   The decorative paper according to any one of claims 1 to 3, wherein the pattern layer is provided directly on the thermoplastic resin layer. 前記絵柄層は、ベタインキ層を含み、
前記ベタインキ層は、イソシアネート硬化剤を含むことを特徴とする請求項1から4の何れか1項に記載の化粧紙。
The pattern layer includes a solid ink layer,
The decorative paper according to any one of claims 1 to 4, wherein the solid ink layer contains an isocyanate curing agent.
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Publication number Priority date Publication date Assignee Title
WO2024071387A1 (en) * 2022-09-29 2024-04-04 Toppan Holdings Inc. Decorative sheet

Citations (4)

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Publication number Priority date Publication date Assignee Title
JPH08113898A (en) * 1994-10-11 1996-05-07 Dainippon Printing Co Ltd Antimicrobial wall-decorating material
JPH08150693A (en) * 1994-11-30 1996-06-11 Dainippon Printing Co Ltd Decorative sheet
JP2000296584A (en) * 1999-04-15 2000-10-24 Dainippon Printing Co Ltd Decorative sheet
JP2013078955A (en) * 2013-01-23 2013-05-02 Dainippon Printing Co Ltd Decorative panel using moisture-proof decorative sheet

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08113898A (en) * 1994-10-11 1996-05-07 Dainippon Printing Co Ltd Antimicrobial wall-decorating material
JPH08150693A (en) * 1994-11-30 1996-06-11 Dainippon Printing Co Ltd Decorative sheet
JP2000296584A (en) * 1999-04-15 2000-10-24 Dainippon Printing Co Ltd Decorative sheet
JP2013078955A (en) * 2013-01-23 2013-05-02 Dainippon Printing Co Ltd Decorative panel using moisture-proof decorative sheet

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024071387A1 (en) * 2022-09-29 2024-04-04 Toppan Holdings Inc. Decorative sheet

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