JP2010030130A - Monolayer decorative sheet - Google Patents
Monolayer decorative sheet Download PDFInfo
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- JP2010030130A JP2010030130A JP2008194229A JP2008194229A JP2010030130A JP 2010030130 A JP2010030130 A JP 2010030130A JP 2008194229 A JP2008194229 A JP 2008194229A JP 2008194229 A JP2008194229 A JP 2008194229A JP 2010030130 A JP2010030130 A JP 2010030130A
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- resin
- sheet
- layer
- decorative sheet
- protective layer
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- 239000002356 single layer Substances 0.000 title claims abstract description 9
- 229920005989 resin Polymers 0.000 claims abstract description 49
- 239000011347 resin Substances 0.000 claims abstract description 49
- 239000011241 protective layer Substances 0.000 claims abstract description 20
- 239000010410 layer Substances 0.000 claims abstract description 19
- 229920005992 thermoplastic resin Polymers 0.000 claims abstract description 18
- 239000000463 material Substances 0.000 claims abstract description 16
- 229920000728 polyester Polymers 0.000 claims abstract description 14
- 239000000203 mixture Substances 0.000 claims abstract description 4
- 230000005865 ionizing radiation Effects 0.000 claims description 14
- 229920001187 thermosetting polymer Polymers 0.000 claims description 10
- 238000012545 processing Methods 0.000 abstract description 4
- 238000013007 heat curing Methods 0.000 abstract 1
- 238000003847 radiation curing Methods 0.000 abstract 1
- 239000000758 substrate Substances 0.000 description 13
- 239000011248 coating agent Substances 0.000 description 11
- 238000000576 coating method Methods 0.000 description 11
- -1 polyethylene terephthalate Polymers 0.000 description 10
- 229920000139 polyethylene terephthalate Polymers 0.000 description 10
- 239000005020 polyethylene terephthalate Substances 0.000 description 10
- 238000005452 bending Methods 0.000 description 6
- 229920001225 polyester resin Polymers 0.000 description 6
- 229920006352 transparent thermoplastic Polymers 0.000 description 5
- 238000001035 drying Methods 0.000 description 4
- 239000004645 polyester resin Substances 0.000 description 4
- 238000007639 printing Methods 0.000 description 4
- 238000002156 mixing Methods 0.000 description 3
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 2
- 239000005057 Hexamethylene diisocyanate Substances 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 150000002009 diols Chemical class 0.000 description 2
- RRAMGCGOFNQTLD-UHFFFAOYSA-N hexamethylene diisocyanate Chemical compound O=C=NCCCCCCN=C=O RRAMGCGOFNQTLD-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920005862 polyol Polymers 0.000 description 2
- CXMXRPHRNRROMY-UHFFFAOYSA-N sebacic acid Chemical compound OC(=O)CCCCCCCCC(O)=O CXMXRPHRNRROMY-UHFFFAOYSA-N 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- QFGCFKJIPBRJGM-UHFFFAOYSA-N 12-[(2-methylpropan-2-yl)oxy]-12-oxododecanoic acid Chemical class CC(C)(C)OC(=O)CCCCCCCCCCC(O)=O QFGCFKJIPBRJGM-UHFFFAOYSA-N 0.000 description 1
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- MMINFSMURORWKH-UHFFFAOYSA-N 3,6-dioxabicyclo[6.2.2]dodeca-1(10),8,11-triene-2,7-dione Chemical group O=C1OCCOC(=O)C2=CC=C1C=C2 MMINFSMURORWKH-UHFFFAOYSA-N 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- IDCBOTIENDVCBQ-UHFFFAOYSA-N TEPP Chemical compound CCOP(=O)(OCC)OP(=O)(OCC)OCC IDCBOTIENDVCBQ-UHFFFAOYSA-N 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- ORLQHILJRHBSAY-UHFFFAOYSA-N [1-(hydroxymethyl)cyclohexyl]methanol Chemical compound OCC1(CO)CCCCC1 ORLQHILJRHBSAY-UHFFFAOYSA-N 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 125000002723 alicyclic group Chemical group 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 239000003242 anti bacterial agent Substances 0.000 description 1
- 230000003373 anti-fouling effect Effects 0.000 description 1
- 229940121375 antifungal agent Drugs 0.000 description 1
- 239000003429 antifungal agent Substances 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- QYQADNCHXSEGJT-UHFFFAOYSA-N cyclohexane-1,1-dicarboxylate;hydron Chemical compound OC(=O)C1(C(O)=O)CCCCC1 QYQADNCHXSEGJT-UHFFFAOYSA-N 0.000 description 1
- VEIOBOXBGYWJIT-UHFFFAOYSA-N cyclohexane;methanol Chemical compound OC.OC.C1CCCCC1 VEIOBOXBGYWJIT-UHFFFAOYSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000004049 embossing Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 238000007756 gravure coating Methods 0.000 description 1
- 238000007646 gravure printing Methods 0.000 description 1
- 239000012760 heat stabilizer Substances 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 150000007529 inorganic bases Chemical class 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000004611 light stabiliser Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 229920005644 polyethylene terephthalate glycol copolymer Polymers 0.000 description 1
- 150000003077 polyols Chemical class 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Landscapes
- Laminated Bodies (AREA)
Abstract
Description
本発明は、木質系基材、無機質系基材、合成樹脂基材、金属系基材等々の基材へ貼り合わせて用いられる化粧シートに関し、特には表面が鏡面で光沢を有し、台所や洗面台などの水廻りを中心とした場所で用いられる化粧シートに関する。 The present invention relates to a decorative sheet used by being bonded to a base material such as a wood base material, an inorganic base material, a synthetic resin base material, a metal base material, etc. The present invention relates to a decorative sheet used in a place such as a washstand centering around water.
前記目的に用いる化粧シートとしては、着色隠蔽性を有する熱可塑性樹脂基材上に印刷を施し、透明熱可塑性樹脂を溶融押出して透明熱可塑性樹脂層を設けるか、透明熱可塑性樹脂シートを貼りあわせてなる複層の化粧シートが用いられてきた。 As a decorative sheet used for the above purpose, printing is performed on a thermoplastic resin base material having a color hiding property, and a transparent thermoplastic resin layer is provided by melting and extruding a transparent thermoplastic resin, or a transparent thermoplastic resin sheet is bonded together. Multi-layered decorative sheets have been used.
しかしながら、表面が鏡面で光沢を有する化粧シートとする場合、鏡面加工した透明樹脂層を設けるか、鏡面加工したシートを貼り合わせるかしていたが、表面の各種耐性を出す為には表面保護層を別途塗工により設けなければならず、その場合表面保護層との屈折率との差から干渉縞が発生して意匠性が低下するという問題があった。 However, when a glossy decorative sheet is used for the surface, either a mirror-finished transparent resin layer is provided or a mirror-finished sheet is bonded. In this case, there is a problem that interference fringes are generated due to a difference in refractive index from the surface protective layer, resulting in a decrease in design.
表面保護層がない場合は上記のように防汚性、耐傷付き性等に問題があるものとなる。
一方、透明熱可塑性樹脂層あるいは透明熱可塑性樹脂シートがないと、化粧シートとしての硬度や耐キャスター性に問題のあるものとなり、また着色隠蔽層には絵柄模様層を設ける場合が多い為、そのまま表面保護層を塗工により設けただけでは表面が鏡面で光沢を有するような加工をすることが困難なものであった。
When there is no surface protective layer, there is a problem in antifouling property, scratch resistance, etc. as described above.
On the other hand, if there is no transparent thermoplastic resin layer or transparent thermoplastic resin sheet, there will be a problem with the hardness and caster resistance as a decorative sheet, and the colored concealment layer is often provided with a pattern layer. It was difficult to perform processing such that the surface had a mirror surface and glossiness only by providing the surface protective layer by coating.
さらには、いずれの場合も熱可塑性樹脂基材として通常もちいているのは二軸延伸ポリエチレンテレフタレートがほとんどであるが、硬度には優れるが、ラッピング加工のような曲げ加工ではシートの腰が強く、高熱・高圧をかけても基材が跳ね返ってしまい曲げ加工が困難な場合が多い。また、これらの基材は取手を取り付けるための穴あけ加工等の様々な後加工が入るが、表面保護層がこれらの加工のための高熱・高圧をかけた際に溶融してしまうという問題があった。 Furthermore, in all cases, the biaxially stretched polyethylene terephthalate is usually used as the thermoplastic resin base material, but the hardness is excellent, but the bending of the lapping process makes the sheet strong, In many cases, bending is difficult because the substrate rebounds even under high heat and high pressure. In addition, these base materials are subjected to various post-processing such as drilling for attaching the handle, but there is a problem that the surface protective layer is melted when high heat and high pressure are applied for these processing. It was.
本発明はこのような問題点を解決するためになされたものであり、その課題とするところは、表面が鏡面であって干渉縞の発生が抑制され、かつシートの加工適性や表面の耐性に優れた化粧シートを提供することにある。 The present invention has been made to solve such problems, and the problem is that the surface is a mirror surface, the generation of interference fringes is suppressed, and the sheet processing suitability and surface resistance are reduced. The object is to provide an excellent decorative sheet.
本発明はこの課題を解決したものであり、すなわち請求項１記載の発明は熱可塑性樹脂基材上に透明樹脂層を設けずに表面保護層を設けてなる単層化粧シートであって、前記熱可塑性樹脂基材は非結晶ポリエステルまたは非晶質ポリエステルからなるシートであり、前記表面保護層は電離放射線硬化型樹脂と熱硬化型樹脂とを３：７〜１：９の割合で混合したものを主剤とする樹脂からなり、表面が鏡面加工されてなることを特徴とする単層化粧シートである。 The present invention solves this problem, that is, the invention according to claim 1 is a single-layer decorative sheet provided with a surface protective layer without providing a transparent resin layer on a thermoplastic resin substrate, The thermoplastic resin substrate is a sheet made of amorphous polyester or amorphous polyester, and the surface protective layer is a mixture of ionizing radiation curable resin and thermosetting resin in a ratio of 3: 7 to 1: 9. It is a single-layer decorative sheet made of a resin whose base material is a mirror-finished surface.
本発明の請求項１記載の発明により、熱可塑性樹脂基材を非結晶ポリエステルまたは非晶質ポリエステルのシートとすることで通常の２軸延伸ポリエチレンテレフタレートシートなどと比較して高温を加えなくてもシートが柔軟になることから加工適性を有するものとなる。また表面保護層との間で干渉縞を発生することもない。さらに表面保護層を電離放射線硬化型樹脂と熱硬化型樹脂とを特定の割合で混合し、電離放射線による架橋硬化により各種表面耐性に優れたものとしつつ、熱圧ロールなどにより表面を鏡面加工することを可能とした。 According to the invention of claim 1 of the present invention, the thermoplastic resin base material is made of an amorphous polyester or an amorphous polyester sheet, so that it is not necessary to apply a high temperature as compared with a normal biaxially stretched polyethylene terephthalate sheet. Since the sheet becomes flexible, it has processability. Further, no interference fringes are generated with the surface protective layer. Furthermore, the surface protective layer is mixed with a specific ratio of ionizing radiation curable resin and thermosetting resin, and the surface is mirror-finished with a hot-press roll or the like while making it excellent in various surface resistances by crosslinking and curing with ionizing radiation. Made it possible.
以下、本発明を図面に基づき詳細に説明する。図１に本発明の単層化粧シートの一実施例の断面の形状を示す。非結晶ポリエステルまたは非晶質ポリエステルのシートからなる熱可塑性樹脂基材１上に適宜絵柄模様層２、リコート層３を設け、電離放射線硬化型樹脂と熱硬化型樹脂とを混合した表面保護層４を設けてなる。 Hereinafter, the present invention will be described in detail with reference to the drawings. FIG. 1 shows the cross-sectional shape of one embodiment of the single-layer decorative sheet of the present invention. A surface protective layer 4 in which a pattern layer 2 and a recoat layer 3 are appropriately provided on a thermoplastic resin substrate 1 made of a sheet of amorphous polyester or amorphous polyester, and an ionizing radiation curable resin and a thermosetting resin are mixed. Is provided.
本発明における熱可塑性樹脂基材１には非結晶ポリエステルまたは非晶質ポリエステルのシートを用いる。非結晶ポリエステルとしては、ポリエチレンテレフタレート樹脂等の通常の汎用の結晶性ポリエステル系樹脂を結晶化させない成形条件でシート状に押出成形したもの（いわゆるＡ−ＰＥＴシート）があげられ、非晶質ポリエステルとしては、上記した結晶性ポリエステル系樹脂の基本骨格中に結晶化を抑制するための各種の共重合成分を共重合させた樹脂（いわゆる共重合ポリエステル樹脂）をシート成形したものあり、本発明にはいずれのものも使用することができる。 A sheet of amorphous polyester or amorphous polyester is used for the thermoplastic resin substrate 1 in the present invention. Examples of the amorphous polyester include those obtained by extruding an ordinary general-purpose crystalline polyester resin such as polyethylene terephthalate resin into a sheet shape under a molding condition that does not crystallize (so-called A-PET sheet). Is a sheet-molded resin (so-called copolymer polyester resin) obtained by copolymerizing various copolymer components for suppressing crystallization in the basic skeleton of the above-described crystalline polyester resin. Any one can be used.
上記Ａ−ＰＥＴシートは、純粋又はほぼ純粋に近いポリエチレンテレフタレート樹脂からなるものであり、具体的には帝人株式会社製「テイジンテトロンシート（Ａ−ＰＥＴ）」、東洋紡績株式会社製「東洋紡ＰＥＴＭＡＸシートＡシリーズ」、鐘紡株式会社製「カネボウＡ−ＰＥＴシート」等として市販されているものを挙げることができる。 The A-PET sheet is made of pure or nearly pure polyethylene terephthalate resin. Specifically, “Teijin Tetron Sheet (A-PET)” manufactured by Teijin Limited, “Toyobo PETMAX Sheet manufactured by Toyobo Co., Ltd.” A series ", Kanebo Co., Ltd." Kanebo A-PET sheet "etc. can be mentioned.
これに対し、後者のいわゆる共重合ポリエステル系樹脂シートは、エチレンテレフタレート骨格中にジカルボン酸成分として例えばセバシン酸、エイコ酸、ドデカンジオン酸、ダイマー酸、シクロヘキサンジカルボン酸等の長鎖脂肪族ジカルボン酸及び／又は脂環族ジカルボン酸を導入したり、及び／又は、ジオール成分として例えばポリエチレングリコール、ポリテトラメチレングリコール、シクロヘキサンジメタノール等のポリエーテル系ジオール及び／又は脂環族ジオールを導入したもの等がある。 On the other hand, the latter so-called copolymerized polyester-based resin sheet has long chain aliphatic dicarboxylic acids such as sebacic acid, eicoic acid, dodecanedioic acid, dimer acid, and cyclohexanedicarboxylic acid as dicarboxylic acid components in the ethylene terephthalate skeleton, and Introducing alicyclic dicarboxylic acid and / or introducing diol component, for example, polyether diol such as polyethylene glycol, polytetramethylene glycol, cyclohexane dimethanol and / or alicyclic diol, etc. is there.
中でも最も代表的なのは、通称ＰＥＴ−Ｇとして市販されているシクロヘキサンジメタノール共重合ポリエチレンテレフタレート樹脂であり、この樹脂をシート化したものとして、具体的には例えば長瀬産業株式会社製「ＮＡＧＡＳＥ Ａ−ＰＥＴ」、リケンテクノス株式会社製「リベスター」等として市販されているものを挙げることができる。 Among them, the most representative is a cyclohexanedimethanol copolymerized polyethylene terephthalate resin marketed as commonly known PET-G. Specifically, for example, “NAGASE A-PET” manufactured by Nagase Sangyo Co., Ltd. "," Rivester "manufactured by Riken Technos Co., Ltd., and the like.
熱可塑性樹脂基材１の厚さには特に制限はなく、従来の同種の化粧シートにおけるそれと同様の厚さのものを使用することができる。但し、あまり薄過ぎると印刷加工時や被貼着基材へのラミネート時等に破断し易く、一方あまり厚過ぎても可撓性を失って折り曲げ加工性や真空成形性等が低下し、不経済でもあるので、一般的には２０〜２００μｍ程度の範囲内とするのが良く、中でも５０〜１５０μｍ程度とすることが最も望ましい。 There is no restriction | limiting in particular in the thickness of the thermoplastic resin base material 1, The thing of the same thickness as it in the conventional same type decorative sheet can be used. However, if it is too thin, it tends to break during printing or laminating to a substrate to be adhered, while if it is too thick, it loses flexibility, resulting in poor bending workability and vacuum formability. Since it is economical, it is generally preferable to set the thickness within the range of about 20 to 200 μm, and most preferably about 50 to 150 μm.
熱可塑性樹脂基材１には、必要に応じて例えば着色剤、充填剤、酸化防止剤、志賀視線吸収剤、光安定剤、熱安定剤、可塑剤、滑剤、帯電防止剤、難燃剤、抗菌剤、防黴剤等の各種の添加剤から選ばれる１種以上を添加することもできる。特に、目的の化粧シートに、被貼着基材の表面の色彩や欠陥等に対する隠蔽性が要求される場合には熱可塑性樹脂基材１に例えば酸化チタン、酸化亜鉛、酸化鉄、カーボンブラック等の隠蔽性の着色顔料を添加することにより、熱可塑性樹脂基材１を着色隠蔽性とすることが望ましい。 For the thermoplastic resin substrate 1, for example, a colorant, a filler, an antioxidant, a Shiga line-of-sight absorber, a light stabilizer, a heat stabilizer, a plasticizer, a lubricant, an antistatic agent, a flame retardant, an antibacterial agent, if necessary. One or more selected from various additives such as an agent and an antifungal agent can also be added. In particular, when the target decorative sheet is required to conceal the surface color or defects of the substrate to be adhered, for example, titanium oxide, zinc oxide, iron oxide, carbon black or the like is applied to the thermoplastic resin substrate 1. It is desirable that the thermoplastic resin substrate 1 be colored and concealed by adding a concealing color pigment.
絵柄模様層２は木目柄又は抽象柄などの所望の意匠性を付与の為に適宜設けられる。具体的にはグラビア印刷等により設けられるインキからなる。用いるインキの種類は特に限定されず、例えば硝化綿系等の建材薄紙用インキであれば良いが、塗布量を極力抑えて用いることが望ましい。塗布量としては、全面ベタインキ及び絵柄インキを合わせて１０ｇ／ｍ２を越えない範囲とすることが望ましい。下限は特に限定されないが、一般的には意匠面から最低でも１ｇ／ｍ２程度は必要である。なお、透気度が高く繊維密度の低い原紙を用いるため、インキの裏抜けが発生しないように、インキ粘度は通常より高めにて印刷することが望ましい。 The picture pattern layer 2 is appropriately provided for imparting a desired design such as a wood grain pattern or an abstract pattern. Specifically, the ink is provided by gravure printing or the like. The type of ink to be used is not particularly limited, and may be, for example, an ink for building material thin paper such as nitrified cotton. However, it is desirable to use the coating amount as much as possible. The coating amount is preferably within a range not exceeding 10 g / m 2 in total for the solid ink and the pattern ink. Although a minimum is not specifically limited, Generally 1 g / m < 2 > at least is required from the design surface. In addition, since a base paper having a high air permeability and a low fiber density is used, it is desirable to print at a higher ink viscosity than usual so as not to cause ink back-through.
リコート層３は熱可塑性樹脂基材１と後述する表面保護層４の接着性向上のため適宜設けられる。具体的には後述する表面保護層４の電離放射線硬化型樹脂と熱硬化型樹脂の混合した樹脂と同様の樹脂を、乾燥後の塗布量で１〜３ｇ／ｍ２程度に薄く設けることで前記目的を達成することが可能となる。 The recoat layer 3 is appropriately provided to improve the adhesion between the thermoplastic resin substrate 1 and the surface protective layer 4 described later. Specifically, the above-mentioned purpose is achieved by providing a resin similar to a resin obtained by mixing an ionizing radiation curable resin and a thermosetting resin of the surface protective layer 4 described later, in a thin coating amount of about 1 to 3 g / m 2 after drying. Can be achieved.
本発明における表面保護層４は、電離放射線硬化型樹脂と熱硬化型樹脂の混合系の樹脂で形成している。これは、電離放射線硬化型樹脂による高硬度を得るためである。電離放射線硬化型樹脂は、高硬度の塗膜が得られる反面、伸び率が数％程度の柔軟性のないものである。その一方で、熱硬化型樹脂は、電離放射線硬化型樹脂では得られない曲げ加工性を付与することが可能であり、２つの樹脂を任意な配合比で混合することで、ラッピング等の曲げ加工性に適した高硬度の塗膜を得ることが可能である。 The surface protective layer 4 in the present invention is formed of a mixed resin of an ionizing radiation curable resin and a thermosetting resin. This is to obtain high hardness by the ionizing radiation curable resin. The ionizing radiation curable resin is a non-flexible resin having an elongation of several percent, while a high hardness coating film can be obtained. On the other hand, thermosetting resins can impart bending workability that cannot be obtained with ionizing radiation curable resins, and by mixing two resins at an arbitrary blending ratio, bending work such as wrapping can be performed. It is possible to obtain a coating film with high hardness suitable for the properties.
また、電離放射線硬化型樹脂は、電離放射線の照射により瞬時の硬化が可能であるが、熱硬化型樹脂よりも硬化収縮が大きく、オレフィン系、およびポリエステル系樹脂との密着性は乏しいものである。本発明は、電離放射線硬化型樹脂と熱硬化型樹脂の混合系の樹脂を使用することにより硬化収縮を押さえ、尚且つ伸びのよい熱硬化型樹脂を含んだリコート層を設けることにより表面保護層の密着性を向上し、曲げ加工がなされても表面保護層が剥離することなく保持することが可能なシートを得ることが可能である。 In addition, the ionizing radiation curable resin can be cured instantaneously by irradiation with ionizing radiation, but its curing shrinkage is larger than that of the thermosetting resin, and its adhesion to olefin-based and polyester-based resins is poor. . The present invention provides a surface protective layer by providing a recoat layer containing a thermosetting resin that suppresses curing shrinkage by using a mixed resin of an ionizing radiation curable resin and a thermosetting resin, and also has good elongation. Thus, it is possible to obtain a sheet that can be maintained without peeling off the surface protective layer even if it is bent.
本発明は、表面保護層を電離放射線照射により半硬化させることが可能で、エンボス加工を施すことで、コーティング時に微細な異物等が付着しても表面形状には影響しない、高意匠な化粧シートを得ることが可能である。また、コーティング塗膜表面の僅かな厚みムラでの反射光同士の干渉縞の発生を防止することが可能となる。 The present invention is a highly-designed decorative sheet that can semi-cure the surface protective layer by ionizing radiation irradiation and does not affect the surface shape even if fine foreign matter adheres during coating by embossing. It is possible to obtain In addition, it is possible to prevent the occurrence of interference fringes between reflected lights due to slight thickness unevenness on the surface of the coating film.
熱可塑性樹脂基材１として抽象柄印刷（絵柄模様層２）の施された着色非結晶ポリエステル系樹脂のシート（１５０μｍ厚）を用い、この表面に、リコート層３としてアクリル系樹脂とポリウレタンポリオール樹脂との混合樹脂１００重量部に、ヘキサメチレンジイソシアネートを１０重量部混合したものを溶剤で希釈後、ダイレクトナチュラルグラビアコート方式によって、乾燥後の塗布量が２ｇ／ｍ２となるように塗工してリコート層３とした。その上に表面保護層４として、紫外線硬化型樹脂３０部とアクリルポリオール樹脂７０重量部とヘキサメチレンジイソシアネートを１０重量部混合したもの溶剤で希釈後、ダイレクトリバースグラビア方式（周速比１００％）による塗工により乾燥後の塗布量約１０ｇ／ｍ２となるように塗布したあと、高照度の高圧水銀ランプを照射し硬化させた。その直後にシートを１００℃のロール，１２０℃のＩＲヒーターにより予熱し、６０℃の鏡面版にて表面を鏡面加工し、４０℃での温乾養生にて完全硬化させ、シートを完成させた。 As the thermoplastic resin substrate 1, a colored amorphous polyester resin sheet (150 μm thick) with abstract pattern printing (pattern pattern layer 2) is used, and on this surface, an acrylic resin and a polyurethane polyol resin are used as the recoat layer 3. A mixture of 100 parts by weight of a mixed resin and 10 parts by weight of hexamethylene diisocyanate is diluted with a solvent and then coated by a direct natural gravure coating method so that the coating amount after drying is 2 g / m 2. Layer 3 was designated. On top of that, as the surface protective layer 4, 30 parts of UV curable resin, 70 parts by weight of acrylic polyol resin and 10 parts by weight of hexamethylene diisocyanate are mixed with a solvent, and then diluted by a direct reverse gravure method (peripheral speed ratio 100%). After the coating was applied so that the coating amount after drying was about 10 g / m 2, it was cured by irradiation with a high-intensity high-pressure mercury lamp. Immediately after that, the sheet was preheated with a roll of 100 ° C. and an IR heater of 120 ° C., the surface was mirror-finished with a mirror plate of 60 ° C., and completely cured by heat drying at 40 ° C. to complete the sheet. .
＜比較例１＞
前記熱可塑性樹脂基材１として抽象柄印刷の施された２軸延伸ポリエステルシート（１５０μｍ厚）を用いた以外は実施例１と同様にして化粧シートを得た。
上記の様に作製した実施例１、比較例１の化粧シートの干渉縞、曲げ加工性を比較した結果を表１に示す。
<Comparative Example 1>
A decorative sheet was obtained in the same manner as in Example 1 except that a biaxially stretched polyester sheet (150 μm thick) subjected to abstract pattern printing was used as the thermoplastic resin substrate 1.
Table 1 shows the results of comparing the interference fringes and bending workability of the decorative sheets of Example 1 and Comparative Example 1 produced as described above.
本発明の単層化粧シートは、表面が鏡面で光沢を有し、台所や洗面台などの水廻りを中心とした場所で使用可能である。 The single-layer decorative sheet of the present invention has a glossy surface with a mirror surface, and can be used in places such as kitchens and washstands around water.
１…熱可塑性樹脂基材
２…絵柄模様層
３…リコート層
４…表面保護層
DESCRIPTION OF SYMBOLS 1 ... Thermoplastic resin base material 2 ... Pattern pattern layer 3 ... Recoat layer 4 ... Surface protection layer
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| JP2008194229A JP2010030130A (en) | 2008-07-29 | 2008-07-29 | Monolayer decorative sheet |
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| JP2008194229A JP2010030130A (en) | 2008-07-29 | 2008-07-29 | Monolayer decorative sheet |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013067099A (en) * | 2011-09-22 | 2013-04-18 | Dainippon Printing Co Ltd | Decorative board and method of manufacturing the same |
| JP2013203060A (en) * | 2012-03-29 | 2013-10-07 | Dainippon Printing Co Ltd | Decorative sheet and decorative metal panel using the same |
| JP2016093966A (en) * | 2014-11-17 | 2016-05-26 | 株式会社トッパン・コスモ | Decorative sheet |
| WO2018117260A1 (en) * | 2016-12-22 | 2018-06-28 | 凸版印刷株式会社 | Decorative material |
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| JP2002067242A (en) * | 2000-08-24 | 2002-03-05 | Dainippon Printing Co Ltd | Decorative sheet |
| JP2005119022A (en) * | 2003-10-14 | 2005-05-12 | Toppan Printing Co Ltd | Manufacturing method of cosmetic material |
| JP2005125627A (en) * | 2003-10-24 | 2005-05-19 | Toppan Printing Co Ltd | Method for forming a surface protective layer having a smooth surface |
| JP2006076001A (en) * | 2004-09-07 | 2006-03-23 | Toppan Printing Co Ltd | Decorative sheet |
| WO2006078038A1 (en) * | 2005-01-24 | 2006-07-27 | Dai Nippon Printing Co., Ltd. | Decoration sheet and decoration board employing it |
| JP2008120031A (en) * | 2006-11-15 | 2008-05-29 | Toppan Printing Co Ltd | Decorative sheet and method for producing the same |
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002067242A (en) * | 2000-08-24 | 2002-03-05 | Dainippon Printing Co Ltd | Decorative sheet |
| JP2005119022A (en) * | 2003-10-14 | 2005-05-12 | Toppan Printing Co Ltd | Manufacturing method of cosmetic material |
| JP2005125627A (en) * | 2003-10-24 | 2005-05-19 | Toppan Printing Co Ltd | Method for forming a surface protective layer having a smooth surface |
| JP2006076001A (en) * | 2004-09-07 | 2006-03-23 | Toppan Printing Co Ltd | Decorative sheet |
| WO2006078038A1 (en) * | 2005-01-24 | 2006-07-27 | Dai Nippon Printing Co., Ltd. | Decoration sheet and decoration board employing it |
| JP2008120031A (en) * | 2006-11-15 | 2008-05-29 | Toppan Printing Co Ltd | Decorative sheet and method for producing the same |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013067099A (en) * | 2011-09-22 | 2013-04-18 | Dainippon Printing Co Ltd | Decorative board and method of manufacturing the same |
| JP2013203060A (en) * | 2012-03-29 | 2013-10-07 | Dainippon Printing Co Ltd | Decorative sheet and decorative metal panel using the same |
| JP2016093966A (en) * | 2014-11-17 | 2016-05-26 | 株式会社トッパン・コスモ | Decorative sheet |
| WO2018117260A1 (en) * | 2016-12-22 | 2018-06-28 | 凸版印刷株式会社 | Decorative material |
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