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JPH08108695A - Transfer sheet - Google Patents

Transfer sheet

Info

Publication number
JPH08108695A
JPH08108695A JP27021294A JP27021294A JPH08108695A JP H08108695 A JPH08108695 A JP H08108695A JP 27021294 A JP27021294 A JP 27021294A JP 27021294 A JP27021294 A JP 27021294A JP H08108695 A JPH08108695 A JP H08108695A
Authority
JP
Japan
Prior art keywords
layer
ionizing radiation
transfer
curable resin
transfer sheet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP27021294A
Other languages
Japanese (ja)
Inventor
Kazuhiro Suga
和宏 須賀
Takashi Matano
剛史 俣野
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dai Nippon Printing Co Ltd
Original Assignee
Dai Nippon Printing Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dai Nippon Printing Co Ltd filed Critical Dai Nippon Printing Co Ltd
Priority to JP27021294A priority Critical patent/JPH08108695A/en
Publication of JPH08108695A publication Critical patent/JPH08108695A/en
Pending legal-status Critical Current

Links

Landscapes

  • Decoration By Transfer Pictures (AREA)
  • Laminated Bodies (AREA)

Abstract

PURPOSE: To form a hard coat layer wherein its orienting properties coexist with surface hardness such as an abrasion resistance, a scratch resistance, etc. CONSTITUTION: An ionizing radiation-curable resin protection layer 3, which is a transfer layer on a releasable base sheet 2, is formed of a laminate comprising a first ionizing radiation-curable resin layer 31 which contains a monomer having two or more acryloyl groups, or methacryloyl groups, in one molecule and which forms a surface layer at the time of transfer, and a second ionizing radiation-curable resin layer 32 which contains a prepolymer having two or more acryloyl groups, or methacryloyl groups, in one molecule. A non- crosslinkable thermoplatic resin is contained in at least one layer of the first and the second ionizing radiation-curable resin layers.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、家電機器および家具・
建築用内装材、自動車等車輌内装材等の表面保護や表面
化粧を目的に使用されるハードコート(硬質塗膜)転写
シートに関する。
BACKGROUND OF THE INVENTION The present invention relates to home appliances and furniture.
The present invention relates to a hard coat (hard coating film) transfer sheet used for the purpose of surface protection and surface makeup of interior materials for construction, vehicle interior materials such as automobiles.

【0002】[0002]

【従来の技術】従来、アクリル樹脂、ポリスチレン樹
脂、ポリカーボネート樹脂、その他の合成樹脂は成形性
が良いこと、安価であること、軽量であること、透明性
に優れること等の利点を有し、各種工業材料、建築材
料、装飾材料、光学材料、弱電材料、化粧品容器材料、
家庭材料、自動車等車輌内装材料等の成形品として広く
利用されている。
2. Description of the Related Art Conventionally, acrylic resins, polystyrene resins, polycarbonate resins and other synthetic resins have various advantages such as good moldability, low cost, light weight and excellent transparency. Industrial materials, building materials, decorative materials, optical materials, light electrical materials, cosmetic container materials,
It is widely used as a molding material for household materials and interior materials for vehicles such as automobiles.

【0003】このような樹脂成形品は上記の如き種々の
利点を有するものの、ガラス、金属に比較するとその表
面硬度が低いため、表面に傷が付き易く、また、透明性
も低下したり、汚染性が高くなる等の問題を有してい
る。そこで、以上のような各種樹脂成形品等の表面に高
硬度、耐摩耗性、耐汚染性等に優れた表面保護層を付与
する方法としては、特公昭61−3272号公報、実公
平1−1114号公報、実公平1−1115号公報等で
開示される様な電離放射線硬化型塗料を塗布硬化させる
方法、あるいは電離放射線硬化型塗料からなるハードコ
ート層を転写シートから転写する方法が知られている。
Although such a resin molded article has various advantages as described above, its surface hardness is lower than that of glass and metal, so that the surface is apt to be scratched, the transparency is lowered, and contamination is caused. There is a problem that the property becomes high. Therefore, as a method of imparting a surface protective layer excellent in high hardness, abrasion resistance, stain resistance and the like to the surface of various resin molded products as described above, Japanese Patent Publication No. Sho 61-3272, Japanese Utility Model Publication No. There is known a method of coating and curing an ionizing radiation-curable coating composition as disclosed in Japanese Patent Publication No. 1114, Japanese Utility Model Publication No. 1-1115, etc., or a method of transferring a hard coat layer made of an ionizing radiation-curable coating composition from a transfer sheet. ing.

【0004】上記ハードコート転写シートは、基材シー
トの表面に離型層を介してハードコート層を積層し、更
に、必要に応じて絵柄層及び感熱接着剤層を積層したも
のである。これらを樹脂成形品の表面に重ね、常法によ
り加熱ローラで加圧してハードコート層を転写させる
か、あるいは型内に転写シートを配置し、その型内に樹
脂を注入成形するインモールド成形法によってハードコ
ート層を射出成形同時転写させている。上記ハードコー
ト層を形成する材料は、電離放射線硬化型モノマー、或
いは電離放射線硬化型プレポリマー、の単体又は混合体
に必要に応じて電離放射線非硬化型ポリマー、無機フィ
ラーや滑剤を添加している。
The above-mentioned hard coat transfer sheet is obtained by laminating a hard coat layer on the surface of a base material sheet via a release layer, and further laminating a pattern layer and a heat-sensitive adhesive layer if necessary. An in-mold molding method in which these are stacked on the surface of a resin molded product and the hard coat layer is transferred by pressing with a heating roller by an ordinary method, or a transfer sheet is placed in a mold and resin is injected into the mold. The hard coat layer is simultaneously transferred by injection molding. The material forming the hard coat layer is an ionizing radiation-curable monomer, or an ionizing radiation-curable prepolymer, or an ionizing radiation-non-curable polymer, an inorganic filler or a lubricant is added to a single substance or a mixture thereof. .

【0005】[0005]

【発明が解決しようとする課題】ハードコート層の主成
分が電離放射線硬化型モノマー、及び/又は電離放射線
硬化型プレポリマーより成る場合、モノマー成分のみだ
と架橋密度が高く、耐擦傷性、耐摩耗性が良い。しかし
ながら、インモールド成形同時加飾法により樹脂成形品
表面にハードコート層を転写する際、樹脂成形同時転写
品が3次元形状の場合、特に成形品のコーナー部は転写
フィルムが伸ばされる。ハードコート層は高密度架橋の
ため延伸性、成形性に欠け、フィルムの伸びに追随でき
ず、ハードコート層にクラックが発生し、成形品表面が
白化したり、表面硬度が低下したりする。延伸性を上げ
るためにはハードコート層厚を薄くすることが考えられ
るが、この場合、耐摩耗性や耐擦傷性が劣るという問題
がある。また、電離放射線硬化型プレポリマー成分のみ
であると架橋密度は前記手法より低下するため延伸性、
成形性は向上するが、スクラッチ性や耐摩耗性が低下す
るという問題がある。また、 特公昭61−3272号
公報の様に電離放射線硬化型モノマーと電離放射線硬化
型プレポリマーとの混合体にすると、モノマーの性質と
プレポリマーの性質が平均化されて耐摩耗性、延伸性と
も或る程度の水準のハードコート転写層を得ることがで
きる。しかしながら、この場合、耐摩耗性自体はモノマ
ー単体より劣り、又、延伸性自体もプレポリマー単体よ
り劣る。従って、耐摩耗性、延伸性とも最大限に引き出
すことはできなかった。
When the main component of the hard coat layer is composed of an ionizing radiation-curable monomer and / or an ionizing radiation-curable prepolymer, only the monomer component has a high crosslink density, scratch resistance and abrasion resistance. Good wear resistance. However, when the hard coat layer is transferred onto the surface of the resin molded product by the in-mold molding simultaneous decoration method, when the resin molded simultaneous transfer product has a three-dimensional shape, the transfer film is stretched especially at the corners of the molded product. The hard coat layer lacks stretchability and moldability due to high-density cross-linking, cannot follow the elongation of the film, cracks occur in the hard coat layer, the surface of the molded product becomes white, and the surface hardness decreases. Although it is conceivable to reduce the thickness of the hard coat layer in order to improve the stretchability, in this case, there is a problem that abrasion resistance and scratch resistance are poor. Further, the cross-linking density of only the ionizing radiation-curable prepolymer component is lower than that of the above-mentioned method, and thus the stretchability,
Although the moldability is improved, there is a problem that the scratch resistance and the wear resistance are lowered. When a mixture of an ionizing radiation-curable monomer and an ionizing radiation-curable prepolymer is used as in JP-B-61-3272, the properties of the monomer and the properties of the prepolymer are averaged to provide abrasion resistance and stretchability. In both cases, a certain level of hard coat transfer layer can be obtained. However, in this case, the abrasion resistance itself is inferior to that of the monomer alone, and the stretchability itself is inferior to that of the prepolymer alone. Therefore, it was not possible to maximize wear resistance and stretchability.

【0006】そこで本発明は、硬質塗膜の硬化が短時間
で行えて、転写シート製造工程中および該転写シートの
使用中において、延伸性、可撓性に優れ、かつ転写後の
表面の耐擦傷性に優れた転写シートを提供することにあ
る。
Therefore, the present invention is capable of curing a hard coating film in a short time, has excellent stretchability and flexibility during the transfer sheet manufacturing process and during use of the transfer sheet, and has a surface resistance after transfer. It is to provide a transfer sheet having excellent scratch resistance.

【0007】さらに、本発明において、転写層の電離放
射線硬化型樹脂層は、未硬化状態では常温で非粘着性で
あり、転写シート製造時において架橋や硬化などの工程
を経ないで直接連続的に絵柄層、接着剤層等の上層を塗
布できることや、転写シートの使用時に電離線照射を行
う場合には、転写前でも転写後でも行うことが可能とな
る転写シートを提供することにある。
Further, in the present invention, the ionizing radiation-curable resin layer of the transfer layer is non-adhesive at room temperature in the uncured state, and is directly continuous without undergoing steps such as crosslinking and curing during the production of the transfer sheet. Another object of the present invention is to provide a transfer sheet which can be coated with an upper layer such as a pattern layer or an adhesive layer, and can be used before or after transfer when the transfer sheet is irradiated with ionizing radiation.

【0008】[0008]

【課題を解決するための手段】本発明者等は、上記の課
題を解決するために、本発明の転写シートでは、少なく
とも、離型性基体シート上に転写層として電離放射線硬
化型樹脂保護層を有する転写シートに於いて、該電離放
射線硬化型樹脂保護層を、1分子中に2個以上のアクリ
ロイル基又はメタクリロイル基を有するモノマーを含有
し転写時に最表面層となる第1電離放射線硬化型樹脂層
と、その裏面に積層された1分子中に2個以上のアクリ
ロイル基又はメタクリロイル基を有するプレポリマーを
含有する第2電離放射線硬化型樹脂層との積層体から構
成する。また、上記転写シートにおいて、第1電離放射
線硬化型樹脂層と第2電離放射線硬化型樹脂層の少なく
とも1層に非架橋型熱可塑性樹脂を含有する構成とする
ものでもある。
In order to solve the above-mentioned problems, the present inventors have found that in the transfer sheet of the present invention, at least an ionizing radiation-curable resin protective layer as a transfer layer on the releasable substrate sheet. In the transfer sheet having the first ionizing radiation curable resin protective layer, the ionizing radiation curable resin protective layer contains a monomer having two or more acryloyl groups or methacryloyl groups in one molecule and becomes an outermost surface layer at the time of transfer. It is composed of a laminate of a resin layer and a second ionizing radiation curable resin layer laminated on the back surface thereof and containing a prepolymer having two or more acryloyl groups or methacryloyl groups in one molecule. Further, in the above transfer sheet, at least one layer of the first ionizing radiation curable resin layer and the second ionizing radiation curable resin layer contains a non-crosslinking type thermoplastic resin.

【0009】基体シートの材料は、ポリエチレンテレフ
タレート、ポリブチレンテレフタレート、エチレンテレ
フタレート・イソフタレート共重合体などのポリエステ
ル樹脂フィルムや、ポリエチレン、ポリプロピレンなど
のポリオレフィン、シリコン樹脂などの離型性樹脂を塗
布した塗工紙などが使用され、厚さは10〜200μm
程度のものが使用できる。また、必要に応じて、前記樹
脂フィルム上に、さらに、シリコン樹脂、メラミン樹
脂、ポリオレフィンなどを用いて離型層を形成してもよ
い。
The material for the base sheet is a polyester resin film such as polyethylene terephthalate, polybutylene terephthalate, ethylene terephthalate / isophthalate copolymer, or a release resin such as polyolefin such as polyethylene or polypropylene, or a silicone resin. Craft paper is used, and the thickness is 10 to 200 μm.
Something can be used. If necessary, a release layer may be further formed on the resin film by using a silicone resin, a melamine resin, a polyolefin or the like.

【0010】さらに、転写後の保護層表面に所望の艶消
しや凹凸模様を付与したい場合は、該基体シート、また
は、離型層の表面に所望の凹凸と同形状逆凹凸の凹凸模
様を形成してもよい。かかる凹凸模様としては、艶消し
(マット)、ヘアライン、木目導管、万線状溝などがあ
る。
Furthermore, when it is desired to impart a desired matte or uneven pattern to the surface of the protective layer after transfer, an uneven pattern having the same shape as the desired unevenness is formed on the surface of the substrate sheet or the release layer. You may. Examples of such an uneven pattern include matte, hairline, wood grain conduit, and line-shaped groove.

【0011】第1電離放射線硬化型樹脂層の構成成分で
あるモノマーとしては、電離放射線で架橋し得るモノマ
ーであり、一分子中に2個以上のアクリロイル基又はメ
タクリロイル基を有する分子量100〜1000、より
好ましくは250〜800のものである。具体的には、
ジエチレングリコールジ(メタ)アクリレート〔「(メ
タ)アクリレート」とは、メタクリレート又はアクリレ
ートを表す。以下同様。〕、ネオペンチルグリコールジ
(メタ)アクリレート、テトラエチレングリコールジ
(メタ)アクリレート、トリプロピレングリコールジ
(メタ)アクリレート、ポリプロピレングリコールジ
(メタ)アクリレート、1,6−ヘキサンジオールジ
(メタ)アクリレート、1,9−ノナンジオールジ(メ
タ)アクリレート、トリメチロールプロパントリ(メ
タ)アクリレート、ペンタエリスリトールトリ(メタ)
アクリレート、テトラメチロールメタンテトラ(メタ)
アクリレート、ジペンタエリスリトールヘキサ(メタ)
アクリレート等が使用できる。
The monomer which is a constituent of the first ionizing radiation curable resin layer is a monomer which can be crosslinked by ionizing radiation and has a molecular weight of 100 to 1000 having two or more acryloyl groups or methacryloyl groups in one molecule. More preferably, it is 250-800. In particular,
Diethylene glycol di (meth) acrylate ["(meth) acrylate" means methacrylate or acrylate. The same applies below. ], Neopentyl glycol di (meth) acrylate, tetraethylene glycol di (meth) acrylate, tripropylene glycol di (meth) acrylate, polypropylene glycol di (meth) acrylate, 1,6-hexanediol di (meth) acrylate, 1 , 9-Nonanediol di (meth) acrylate, trimethylolpropane tri (meth) acrylate, pentaerythritol tri (meth) acrylate
Acrylate, tetramethylol methane tetra (meth)
Acrylate, dipentaerythritol hexa (meth)
Acrylate can be used.

【0012】第2電離放射線硬化型樹脂層の構成成分で
あるプレポリマーとしては、電離放射線で架橋し得るプ
レポリマーであり、一分子中に2個以上のアクリロイル
基又はメタクリロイル基を有する分子量200〜100
00、より好ましくは1000〜5000のものであ
る。具体的には、ポリエステル(メタ)アクリレート、
ウレタン(メタ)アクリレート、エポキシ(メタ)アク
リレート等が使用できる。これらのなかで、転写時の伸
びと転写後の表面の耐擦傷性の両性質を併せ持つウレタ
ン(メタ)アクリレートが好ましい。また、硬化後の塗
膜の延伸性、可撓性、乾燥時の非粘着性を損なわない範
囲で上記モノマーを少量添加することも可能である。特
に延伸性よりも耐擦傷性の方を重視する場合はこの様に
する。延伸性の方を重視する場合にはモノマーは第2電
離放射線硬化型樹脂樹脂層に添加しない方が良い。
The prepolymer which is a constituent component of the second ionizing radiation-curable resin layer is a prepolymer which can be crosslinked by ionizing radiation and has a molecular weight of 200 to 2 which has two or more acryloyl groups or methacryloyl groups in one molecule. 100
00, more preferably 1000 to 5000. Specifically, polyester (meth) acrylate,
Urethane (meth) acrylate, epoxy (meth) acrylate, etc. can be used. Among these, urethane (meth) acrylate having both elongation at transfer and scratch resistance of the surface after transfer is preferable. Further, it is possible to add a small amount of the above-mentioned monomer within a range that does not impair the stretchability, flexibility and non-adhesiveness of the coating film after curing. This is particularly the case when scratch resistance is more important than stretchability. When the stretchability is more important, it is better not to add the monomer to the second ionizing radiation curable resin resin layer.

【0013】第1及び第2の電離放射線硬化型樹脂層の
各構成成分である非架橋型熱可塑性樹脂は該樹脂層を溶
液として塗工し、溶剤を乾燥させた後、塗膜表面を確実
に非粘着固体化させることにより、その上に他の層を塗
工、印刷して、巻取ることを可能ならしめる為のもので
ある。但し、第1又は第2電離放射線硬化型樹脂層自体
でも乾燥後の非粘着性が十分であったり、或いは後述す
る様な、流動粘着性の塗膜同士を積層する方法を用いる
ときは、非架橋型熱可塑性樹脂は省略して良い。このよ
うな非架橋型熱可塑性樹脂としては、例えば、エチルセ
ルロース、硝酸セルロース、酢酸セルロース、エチルヒ
ドロキシセルロース、セルロースアセテートプロピオネ
ート等のセルロース誘導体、ポリスチレン、ポリ−α−
メチルスチレン等のスチレン樹脂又はスチレン共重合
体、ポリメタクリル酸メチル、ポリメタクリル酸エチ
ル、ポリアクリル酸メチル、ポリアクリル酸エチル、ポ
リアクリル酸ブチル等のアクリル樹脂、ポリ塩化ビニ
ル、ポリ酢酸ビニル、塩化ビニル−酢酸ビニル共重合
体、ロジン、ロジン変性マレイン酸樹脂、ロジン変性フ
ェノール樹脂、ビニルトルエン樹脂、ポリアミド樹脂等
の天然または合成樹脂等が使用できる。これらの中で
も、塗布、溶剤乾燥後の塗膜の非粘着化(指触乾燥
性)、塗膜の可撓性、延伸性の点からは、平均分子量5
0000〜600000、ガラス転移温度50〜130
℃の熱可塑性アクリル樹脂が好ましい。平均分子量、及
びガラス転移温度が、この数値範囲より小さいと乾燥塗
膜の非粘着性が不十分であり、この数値範囲より大きい
と塗膜の可撓性、延伸性が不十分である。
The non-crosslinking type thermoplastic resin, which is a component of each of the first and second ionizing radiation curable resin layers, is applied to the resin layer as a solution, and after drying the solvent, the surface of the coating film is surely removed. By making it non-adhesive solid, it is possible to coat and print another layer on it, and to wind it. However, even when the first or second ionizing radiation curable resin layer itself has sufficient non-adhesiveness after drying, or when using a method of laminating fluid adhesive coatings as described below, The crosslinkable thermoplastic resin may be omitted. Examples of such non-crosslinking type thermoplastic resin include ethyl cellulose, cellulose nitrate, cellulose acetate, ethyl hydroxycellulose, cellulose derivatives such as cellulose acetate propionate, polystyrene, poly-α-
Styrene resin or styrene copolymer such as methylstyrene, acrylic resin such as polymethylmethacrylate, polyethylmethacrylate, polymethylacrylate, ethylpolyacrylate, butylpolyacrylate, polyvinyl chloride, polyvinyl acetate, chloride A natural or synthetic resin such as vinyl-vinyl acetate copolymer, rosin, rosin-modified maleic acid resin, rosin-modified phenol resin, vinyltoluene resin, polyamide resin or the like can be used. Among them, the average molecular weight is 5 in terms of detackification (dryness to the touch) of the coating film after coating and solvent drying, flexibility of the coating film, and stretchability.
0000-600000, glass transition temperature 50-130
Thermoplastic acrylic resins of ° C are preferred. When the average molecular weight and the glass transition temperature are less than this numerical range, the non-tackiness of the dried coating film is insufficient, and when it is more than this numerical range, the flexibility and stretchability of the coating film are insufficient.

【0014】本発明の該電離放射線硬化型樹脂層中の非
架橋型熱可塑性樹脂の含有量としては、モノマー100
重量部に対して、非架橋型熱可塑性樹脂10〜1000
重量部が好ましい。ここで、非架橋型熱可塑性樹脂が1
000重量部以上であれば、電離放射線硬化型樹脂保護
層の電離放射線による架橋密度が極度に粗になり、硬化
後、保護層自体の強度が不十分で耐擦傷性が低下する。
また、非架橋型熱可塑性樹脂が10重量部以下であれ
ば、電離放射線硬化型樹脂保護層の電離放射線による架
橋密度が密となるため、保護層自体の延伸性が減少し、
転写時に変形、破損、亀裂等が生じ易くなる。また、溶
剤乾燥後、未硬化状態での塗膜の非粘着性が不十分とな
り、ブロッキングを起こし易くなる。また、プレポリマ
ー100重量部に対しては、非架橋型熱可塑性樹脂10
〜1000重量部が好ましい。ここで、非架橋型熱可塑
性樹脂が1000重量部以上であれば、電離放射線硬化
型樹脂保護層の電離放射線による架橋密度が極度に粗に
なり、硬化後の保護層自体の強度が不十分で耐擦傷性が
低下する。また、非架橋型熱可塑性樹脂が10重量部以
下であれば、電離放射線硬化型樹脂保護層の電離放射線
による架橋密度が密となり、保護層自体の延伸性が減少
し、転写時に変形、破損、亀裂等が生じ易くなる。ま
た、溶剤乾燥後、未硬化状態での塗膜の非粘着性が不十
分となる。
The content of the non-crosslinking type thermoplastic resin in the ionizing radiation-curable resin layer of the present invention is monomer 100.
Non-crosslinking type thermoplastic resin 10 to 1000 parts by weight
Parts by weight are preferred. Here, the non-crosslinked thermoplastic resin is 1
If it is 000 parts by weight or more, the cross-linking density of the ionizing radiation-curable resin protective layer due to ionizing radiation becomes extremely rough, and after curing, the strength of the protective layer itself is insufficient and the scratch resistance decreases.
If the non-crosslinking type thermoplastic resin is 10 parts by weight or less, the crosslinking density of the ionizing radiation-curable resin protective layer due to the ionizing radiation becomes high, so that the stretchability of the protective layer itself decreases,
Deformation, damage, cracks and the like are likely to occur during transfer. In addition, after solvent drying, the non-adhesiveness of the coating film in the uncured state becomes insufficient, and blocking easily occurs. Further, with respect to 100 parts by weight of the prepolymer, the non-crosslinking type thermoplastic resin 10
It is preferably about 1000 parts by weight. Here, if the amount of the non-crosslinking type thermoplastic resin is 1000 parts by weight or more, the crosslinking density of the ionizing radiation-curable resin protective layer due to ionizing radiation becomes extremely coarse, and the strength of the protective layer itself after curing becomes insufficient. Scratch resistance is reduced. Further, when the amount of the non-crosslinking type thermoplastic resin is 10 parts by weight or less, the crosslinking density of the ionizing radiation-curable resin protective layer due to ionizing radiation becomes dense, the stretchability of the protective layer itself is reduced, and deformation and damage at the time of transfer, Cracks are likely to occur. Further, after solvent drying, the non-adhesiveness of the coating film in the uncured state becomes insufficient.

【0015】また、電離放射線硬化型樹脂保護層中に
は、紫外線にて硬化させる場合には、光重合開始剤とし
て、アセトフェノン類、ベンゾフェノン類、ミヒラーベ
ンゾイルベンゾエート、チオキサントン類などを混合し
て用いることができる。また、必要に応じて、蝋、ポリ
エチレンンワックス類、炭酸カルシウム、アルミナ、シ
リカ、アクリルビーズ、ウレタンビーズ、ポリカーボネ
ートビーズなどの樹脂ビースのような充填剤、有機溶剤
等の揮発性希釈溶剤、および、染料、顔料などの着色剤
を添加してもよい。特に、無機充填剤を添加する場合
は、充填剤表面をアルコキシシランで表面処理すること
が好ましい。
Further, in the ionizing radiation-curable resin protective layer, acetophenones, benzophenones, Michler's benzoylbenzoates, thioxanthones and the like are mixed and used as photopolymerization initiators when they are cured by ultraviolet rays. be able to. Also, if necessary, wax, polyethylene waxes, calcium carbonate, alumina, silica, filler such as resin beads such as acrylic beads, urethane beads, polycarbonate beads, a volatile diluent solvent such as an organic solvent, and, Coloring agents such as dyes and pigments may be added. Particularly, when an inorganic filler is added, it is preferable to surface-treat the filler surface with alkoxysilane.

【0016】該電離放射線硬化型樹脂組成物を塗工する
には、公知の各種方法、例えば、グラビアコート、グラ
ビアリバースコート、グラビアオフセットコート、ロー
ルコート、リバースロールコート、ナイフコート、ワイ
ヤーバーコート、フローコート、コンマコート、ディッ
プコート、ホイラーコート、スピンナーコート、スプレ
ーコート、シルクスクリーン、かけ流しコート、刷毛塗
り等が適用される。溶剤無添加でも塗工できるが、塗工
適性を出す為、通常は有機溶剤で希釈する。その他、モ
ノマー、或いはプレポリマーが溶剤乾燥後も、塗膜に流
動性や粘着性を有する場合は、第1、第2の離型性基体
シートを別別に用意し、第1の離型性基体シート上に、
順に接着剤層、絵柄層、第2電離放射線硬化型樹脂層を
形成し、一方第2離型性基体シート上に第1電離放射線
硬化型樹脂層を塗工し、両基体シートを塗工面を内側に
して、貼り合わせた状態で電離放射線を照射し、塗膜を
硬化せしめ、しかる後に第1の離型性基体シートのみを
剥離することにより、塗工する。
For coating the ionizing radiation curable resin composition, various known methods such as gravure coating, gravure reverse coating, gravure offset coating, roll coating, reverse roll coating, knife coating, wire bar coating, Flow coating, comma coating, dip coating, wheeler coating, spinner coating, spray coating, silk screen, pouring coating, brush coating and the like are applied. Coating can be performed without adding a solvent, but it is usually diluted with an organic solvent in order to obtain coating suitability. In addition, if the coating film has fluidity and adhesiveness even after the solvent or the monomer or prepolymer is dried, the first and second releasable substrate sheets are separately prepared, and the first releasable substrate is prepared. On the sheet,
An adhesive layer, a pattern layer, and a second ionizing radiation-curable resin layer are formed in this order, while the first ionizing radiation-curable resin layer is coated on the second releasable substrate sheet, and both substrate sheets are coated on their coated surfaces. The coating is carried out by irradiating with ionizing radiation in a state of being bonded to the inside so as to cure the coating film, and then peeling off only the first releasable substrate sheet.

【0017】第1電離放射線硬化型樹脂層の塗布、溶剤
除去後の膜厚としては、0.1〜5.0μm、好ましく
は、0.3〜2.0μmが用いられる。0.1μm以下
では硬化状態での表面硬度性に劣り耐擦傷性、耐摩耗性
が不十分である。5.0μm以上では可撓性、延伸性に
劣り、成形性が不十分である。第2電離放射線硬化型樹
脂層の塗布、溶剤除去後の膜厚としては、0.3〜6.
0μ、好ましくは、1.0〜4.0μmが用いられる。
0.3μm以下では弾性に欠け第1電離放射線硬化型樹
脂層にかかる応力を十分に分散、吸収できず、転写時、
成形時に転写層に亀裂(クラック)が発生し易くなる。
また、上下に接する層の熱応力を吸収できず、サーマル
ショック試験でクラックが発生したり、層間剥離を発生
し易い。また、6.0μm以上では可撓性、成形性に劣
る。
The thickness of the first ionizing radiation-curable resin layer after coating and solvent removal is 0.1 to 5.0 μm, preferably 0.3 to 2.0 μm. If it is 0.1 μm or less, the surface hardness in the cured state is poor and the scratch resistance and abrasion resistance are insufficient. When it is 5.0 μm or more, flexibility and stretchability are poor, and moldability is insufficient. The coating thickness of the second ionizing radiation curable resin layer and the film thickness after removing the solvent are 0.3 to 6.
0 μm, preferably 1.0 to 4.0 μm is used.
If the thickness is 0.3 μm or less, the elasticity is insufficient, and the stress applied to the first ionizing radiation-curable resin layer cannot be sufficiently dispersed and absorbed.
Cracks are likely to occur in the transfer layer during molding.
Further, the thermal stress of the layers in contact with each other cannot be absorbed, and cracks are likely to occur in the thermal shock test, and delamination is likely to occur. If it is 6.0 μm or more, flexibility and moldability are poor.

【0018】電離放射線は、電磁波または荷電粒子線の
うち分子を重合、架橋し得るエネルギー量子を有するも
のを意味し、通常は紫外線や電子線が用いられる。紫外
線源としては、超高圧水銀灯、高圧水銀灯、低圧水銀
灯、カーボンアーク、ブラックライトランプ、メタルハ
ライドランプなどの主に波長2000〜4000Åの紫
外線をスペクトルに含む光源が使用できる。電子線源と
しては、コッククロフトワルトン型、バンデグラフ型、
共振変圧器型、絶縁コア変圧器型、あるいは、直線型、
ダイナミトロン型、高周波型等の各種電子線加速器を用
い、100〜1000keV、好ましくは、100〜3
00keVのエネルギーをもつ電子を照射するものを使
用できる。電離放射線の照射時期は、被転写体への転写
前である転写シート製造時などに照射しても、転写後に
照射してもよい。
The ionizing radiation means an electromagnetic wave or a charged particle beam having an energy quantum capable of polymerizing and cross-linking a molecule, and usually an ultraviolet ray or an electron beam is used. As the ultraviolet ray source, a light source mainly containing ultraviolet rays having a wavelength of 2000 to 4000 Å such as an ultrahigh pressure mercury lamp, a high pressure mercury lamp, a low pressure mercury lamp, a carbon arc, a black light lamp and a metal halide lamp can be used. As the electron beam source, Cockcroft Walton type, Van de Graaff type,
Resonant transformer type, insulation core transformer type, or straight line type,
Using various electron beam accelerators such as Dynamitron type and high frequency type, 100 to 1000 keV, preferably 100 to 3
A device that irradiates electrons having an energy of 00 keV can be used. The ionizing radiation may be irradiated at the time of manufacturing the transfer sheet, which is before the transfer to the transfer target, or after the transfer.

【0019】本発明の構成において、転写層即ち、転写
時に離型性基体シートから被転写体へ移行する層は、最
低限保護層である。しかし通常はこれに加えて、絵柄
層、接着剤層等を積層することができる。絵柄層の例と
しては、インキ(或いは塗料)を印刷や塗装によって形
成するインキ或いは塗料としては、ベヒクルに必要に応
じて、顔料、染料などの着色剤、体質顔料、溶剤などを
適宜混合して印刷形成したり、或いは、アルミニウム、
クロム等の金属薄膜を真空蒸着等により全面又はパター
ン状に形成したものを用いることができる。ベヒクルと
しては、熱可塑性樹脂、熱硬化性樹脂、電離放射線硬化
型樹脂などの中から用途、必要な物性、印刷適正などに
応じて適宜選択する。
In the constitution of the present invention, the transfer layer, that is, the layer which transfers from the releasable substrate sheet to the transferred material during transfer is the minimum protective layer. However, usually, in addition to this, a pattern layer, an adhesive layer and the like can be laminated. As an example of the pattern layer, an ink (or paint) formed by printing or painting an ink (or paint) is prepared by appropriately mixing a vehicle with a colorant such as a pigment or dye, an extender pigment, a solvent, etc., if necessary. Printed, or aluminum,
A metal thin film of chromium or the like formed on the entire surface or in a pattern by vacuum deposition or the like can be used. The vehicle is appropriately selected from a thermoplastic resin, a thermosetting resin, an ionizing radiation curable resin and the like according to the application, required physical properties, printing suitability and the like.

【0020】たとえば、絵柄層中に、本発明の該電離放
射線硬化型樹脂保護層中に含有する平均分子量5000
0〜600000、ガラス転移温度50〜130℃であ
るアルリル樹脂の中から1種または2種以上を、20重
量%以上含有することによって、該電離放射線硬化型樹
脂保護層との密着性、転写時の伸度、転写後の転写層強
度を向上することができる。絵柄としては、木目柄、石
目柄、文字、図形、全面ベタ層、或いはこれらの組合せ
等任意である。また単に表面保護層の付与のみが目的の
場合は、絵柄層を省略できる。
For example, the average molecular weight of 5,000 contained in the ionizing radiation-curable resin protective layer of the present invention in the pattern layer.
By containing 20% by weight or more of one or two or more of the allyl resins having a glass transition temperature of 0 to 600,000 and a glass transition temperature of 50 to 130 ° C., the adhesion to the ionizing radiation curable resin protective layer and the time of transfer And the transfer layer strength after transfer can be improved. As the picture pattern, a wood grain pattern, a stone grain pattern, characters, figures, a solid layer, a combination thereof, or the like is arbitrary. Further, when only the purpose of providing the surface protective layer is intended, the pattern layer can be omitted.

【0021】本発明の構成において、接着剤を該電離放
射線硬化型樹脂保護層の上、または、前記絵柄層の上に
設けることができ、転写層を被転写体に転移、接着させ
るための層として、感熱接着剤、粘着剤、溶剤活性型接
着剤、電離放射線硬化性接着剤などの中から用途に応じ
て選定できる。なお、絵柄層、剥離層など接着剤層以外
の転写層自身が充分な接着性を有する時、或いは被転写
体側に接着剤層を設ける時は接着剤層を省略することも
できる。
In the constitution of the present invention, an adhesive can be provided on the ionizing radiation-curable resin protective layer or on the pattern layer, and is a layer for transferring and adhering the transfer layer to the transferred material. Can be selected from among heat-sensitive adhesives, pressure-sensitive adhesives, solvent-activated adhesives, ionizing radiation-curable adhesives, etc. according to the application. The adhesive layer may be omitted when the transfer layer itself other than the adhesive layer such as the pattern layer and the peeling layer has sufficient adhesiveness, or when the adhesive layer is provided on the transfer target side.

【0022】感熱接着剤は加熱によって接着性が発現す
るものであり、通常、熱可塑性樹脂、アイオノマーなど
が用いられる。樹脂としては、例えば、硝酸セルロー
ス、酢酸セルロースなどのセルロース誘導体、ポリスチ
レン、ポリα−メチルスチレンなどのスチレン樹脂また
はスチレン共重合体、ポリメタクリル酸メチル、ポリア
クリル酸エチルなどのアクリル樹脂またはメタクリル樹
脂、塩化ビニル−酢酸ビニル共重合体、エチレン−ビニ
ルアルコール共重合体などのビニル重合体、ロジン、ロ
ジン変性マレイン酸樹脂などのロジンエステル樹脂、ポ
リイソプレンゴム、スチレンブタジエンゴムなどの天
然、または、合成ゴム類、および、各種アイオノマーな
どが使用される。
The heat-sensitive adhesive exhibits adhesiveness when heated, and a thermoplastic resin, an ionomer or the like is usually used. As the resin, for example, cellulose nitrate, cellulose derivative such as cellulose acetate, polystyrene, styrene resin such as poly α-methylstyrene or styrene copolymer, polymethyl methacrylate, acrylic resin such as polyethyl acrylate or methacrylic resin, Vinyl polymers such as vinyl chloride-vinyl acetate copolymers and ethylene-vinyl alcohol copolymers, rosin ester resins such as rosin and rosin-modified maleic acid resins, and natural or synthetic rubbers such as polyisoprene rubber and styrene-butadiene rubber. Kinds and various ionomers are used.

【0023】粘着剤としては、従来公知の粘着テープや
シール類に使用されている粘着剤がいずれも使用でき、
例えば、ポリイソプレンゴム、ポリイソブチルゴム、ス
チレンブタジエンゴム、ブタジエンアクリロニトリルゴ
ムなどのゴム系樹脂、(メタ)アクリル酸エステル系樹
脂、ポリビニルエーテル系樹脂、ポリ酢酸ビニル系樹
脂、ポリ塩化ビニル/酢酸ビニル共重合体系樹脂、ポリ
ビニルブチラール系樹脂などの一種または2種以上の混
合体を主成分とした任意の樹脂系に、適当な粘着付与
剤、クマロン−インデン系樹脂などを適当量添加したも
のであり、さらに、必要に応じて、軟化剤、充填剤、老
化防止剤、架橋剤などを添加する。
As the pressure-sensitive adhesive, any of the pressure-sensitive adhesives conventionally used for pressure-sensitive adhesive tapes and seals can be used.
For example, rubber-based resins such as polyisoprene rubber, polyisobutyl rubber, styrene-butadiene rubber, and butadiene acrylonitrile rubber, (meth) acrylic acid ester-based resins, polyvinyl ether-based resins, polyvinyl acetate-based resins, polyvinyl chloride / vinyl acetate-based resins. A suitable tackifier, coumarone-indene resin, etc. are added in an appropriate amount to an arbitrary resin system containing, as a main component, one or a mixture of two or more polymers such as polymer resins and polyvinyl butyral resins. Furthermore, if necessary, a softening agent, a filler, an antiaging agent, a crosslinking agent, etc. are added.

【0024】被転写体としては、樹脂、金属、硝子、セ
ラミクス等各種のものが対象となり得る。被転写体の形
態としては、板、シート、3次元成形品等である。
As the transferred material, various materials such as resin, metal, glass and ceramics can be used. The form of the transferred material is a plate, a sheet, a three-dimensional molded product, or the like.

【0025】転写法として、特に本発明の転写シートの
特徴が十分生かし得るのは以下の方法である。
As a transfer method, the following method is one in which the characteristics of the transfer sheet of the present invention can be fully utilized.

【0026】特公平2−42080号公報、特公平4
−19924号公報等に開示されるような射出成形同時
転写法。 これは先ず雌型、雄型の間に転写シートを、転写層が射
出孔を有する雄型側を向くように挿入する。必要に応
じ、雌型の表面に転写シートを予備成形した後、両型を
閉じ、射出孔から両型間のキャビティ(成形窩洞)内に
溶融樹脂を射出し、射出樹脂を冷却固化させた後、両型
を開き、成形品とこれに密着した転写シートとを型から
取出し、離型性基体シートのみを剥離して転写層のみ成
形側に残すというものである。
Japanese Examined Patent Publication No. 2-24080, Japanese Examined Patent Publication No. 4
Injection molding simultaneous transfer method as disclosed in Japanese Patent Publication No. 19924. First, a transfer sheet is inserted between the female mold and the male mold so that the transfer layer faces the male mold side having the ejection holes. After pre-molding the transfer sheet on the surface of the female mold as needed, after closing both molds, injecting the molten resin from the injection hole into the cavity (molding cavity) between both molds, and cooling and solidifying the injected resin The two molds are opened, the molded product and the transfer sheet in close contact with the molded product are taken out from the mold, only the releasable substrate sheet is peeled off, and only the transfer layer is left on the molding side.

【0027】特開平4−288214号公報、特開平
5−57786号公報等に開示されるような真空成形同
時転写法。 これは、被転写体の上方に転写シートを、転写層が被転
写体側に向くよう載置する。そして、被転写体側から真
空吸引して転写シートを被転写体表面に被覆することを
助ける。接着剤として、感熱型のものを用いる場合は、
被転写体表面に転写シートを被覆する前、被覆すると同
時、又は被覆して後、転写シートをヒーターで加熱し接
着剤を発現させる。
A vacuum forming simultaneous transfer method as disclosed in JP-A-4-288214 and JP-A-5-57786. In this, a transfer sheet is placed above the transfer target so that the transfer layer faces the transfer target side. Then, vacuum suction is performed from the transfer target side to help cover the transfer target surface with the transfer sheet. When using a thermosensitive adhesive as the adhesive,
Before the transfer sheet is coated with the transfer sheet, simultaneously with the coating, or after the coating, the transfer sheet is heated with a heater to develop the adhesive.

【0028】ラッピング同時転写法。 これは、ラッピング加工法、即ち特公昭59−5190
0号公報、特公昭61−5895号公報、特公平3−2
666号公報等に開示されるように、柱状体にシートを
貼り合わせるに際して、柱状体の各側面に押圧ローラー
を用いて、シートを順次貼り合わせていく(例えば、四
角柱への貼着の場合には、シートを順次、上側面、左右
両側面、下側と貼着して最終的に4側面に貼り合わせ
る)方法を用いる。転写シートの接着剤層側を被転写体
に向けて、ラッピング加工により、順次、各側面に転写
シートを貼り合わせ、接着剤層を加熱等により接着さ
せ、しかるのちに基体シートのみを剥離する。
Lapping simultaneous transfer method. This is a lapping method, that is, Japanese Patent Publication No. 59-5190.
No. 0, Japanese Patent Publication No. 61-5895, Japanese Patent Publication No. 3-2
As disclosed in Japanese Patent No. 666, etc., when a sheet is attached to a columnar body, the sheets are sequentially attached to each side surface of the columnar body using a pressing roller (for example, in the case of attachment to a square column). For this, a sheet is sequentially attached to the upper side surface, the left and right side surfaces, and the lower side, and finally to the four side surfaces. With the adhesive layer side of the transfer sheet facing the transfer target, the transfer sheets are sequentially attached to the respective side surfaces by lapping, the adhesive layers are adhered by heating or the like, and then only the base sheet is peeled off.

【0029】以上のように、転写時に転写シートに伸
び、変形が加わる立体形状への成形転写方法で、硬質塗
膜を転写する場合に、本発明の転写シートは有効であ
る。ただし、ホットスタンプ等、転写シートに伸び、変
形の加わらない転写法に関してもよい。
As described above, the transfer sheet of the present invention is effective in transferring a hard coating film by the method of molding transfer to a three-dimensional shape in which the transfer sheet is stretched and deformed during transfer. However, a transfer method such as hot stamping in which the transfer sheet is stretched and is not deformed may be used.

【0030】[0030]

【作用】上記本発明請求項1の転写シートは、転写層と
しての電離放射線硬化型樹脂保護層が転写後最表面とな
る1分子中に2個以上のアクリロイル基又はメタクリロ
イル基を有するモノマーを含有する第1電離放射線硬化
型樹脂層と、その裏面に積層される1分子中に2個以上
のアクリロイル基又はメタクリロイル基を有するプレポ
リマーを含有する第2電離放射線硬化型樹脂層との積層
体からなるものである。また、本発明請求項2の転写シ
ートは、該第1電離放射線硬化型樹脂層と該第2電離放
射線硬化型樹脂層の少なくとも1層に非架橋型熱可塑性
樹脂を含有する電離放射線硬化型樹脂組成物から形成さ
れたものであり、転写前または転写後に電離放射線照射
により架橋硬化するものである。電離放射線硬化型樹脂
保護層を2層の積層体とし、転写後に表面層となる第1
電離放射線硬化型樹脂層として下層に比べて架橋密度を
高く、膜厚を薄く形成し、転写後に前記第1電離放射線
硬化型樹脂層の下層となる第2電離放射線硬化型樹脂層
として表面層と比べて架橋密度を低く、膜厚を厚く形成
して積層体とすることにより、表面は硬く、高架橋密度
の架橋モノマー自体の持つ耐擦傷性がそのまま発現され
る。しかも下層が硬化架橋後も延伸性、可撓性を有する
ため表面からの応力が分散、緩和され、即ち耐スクラッ
チ性を有することが可能となる。
The transfer sheet according to claim 1 of the present invention contains a monomer having two or more acryloyl groups or methacryloyl groups in one molecule, which is the outermost surface after transfer of the ionizing radiation-curable resin protective layer as a transfer layer. From a laminate of the first ionizing radiation curable resin layer and the second ionizing radiation curable resin layer containing a prepolymer having two or more acryloyl groups or methacryloyl groups in one molecule laminated on the back surface thereof. It will be. The transfer sheet according to claim 2 of the present invention is the ionizing radiation curable resin containing a non-crosslinking thermoplastic resin in at least one of the first ionizing radiation curable resin layer and the second ionizing radiation curable resin layer. It is formed from the composition and is crosslinked and cured by irradiation with ionizing radiation before or after transfer. The ionizing radiation-curable resin protective layer is formed into a two-layer laminate, and becomes a surface layer after transfer.
An ionizing radiation curable resin layer having a higher crosslink density and a smaller film thickness than the lower layer is formed, and a surface layer is formed as a second ionizing radiation curable resin layer below the first ionizing radiation curable resin layer after transfer. In comparison, when the crosslink density is lower and the film thickness is thicker to form a laminate, the surface is hard and the scratch resistance of the crosslinking monomer itself having a high crosslink density is exhibited as it is. Moreover, since the lower layer has stretchability and flexibility even after curing and crosslinking, stress from the surface is dispersed and relaxed, that is, it is possible to have scratch resistance.

【0031】また、本発明請求項2の転写シートでは、
電離放射線硬化型樹脂組成物を塗布後、未硬化状態で常
温で非粘着性の表面を有する電離放射線硬化型樹脂保護
層を形成することができる。したがって、電離放射線の
照射時期は、転写シートを被転写体に転写する前でも、
転写の後でもよい。とくに、転写後の照射の場合、転写
シート製造時には電離放射線を照射しない延伸性、可撓
性の特に優れた状態で転写される為、射出成形同時転写
等のように凹凸表面形状に沿って転写される場合でも転
写層に亀裂を生じることなく転写を行うのにより適して
いる。
Further, in the transfer sheet according to claim 2 of the present invention,
After applying the ionizing radiation curable resin composition, an ionizing radiation curable resin protective layer having a non-adhesive surface at room temperature in an uncured state can be formed. Therefore, the irradiation timing of the ionizing radiation is, even before the transfer sheet is transferred to the transfer target,
It may be after the transfer. In particular, in the case of irradiation after transfer, the transfer sheet is transferred in a state of excellent extensibility and flexibility that does not emit ionizing radiation during manufacturing, so transfer is performed along the uneven surface shape such as simultaneous injection molding transfer. In this case, it is more suitable to perform the transfer without cracking the transfer layer.

【0032】[0032]

【実施例】次に本発明における転写シートの実施例につ
いて具体的に説明する。
EXAMPLES Next, examples of the transfer sheet according to the present invention will be specifically described.

【0033】(実施例1)図1の例示するような転写シ
ートを得るべく、基体フィルム21として、2軸延伸ポ
リエチレンテレフタレートフィルム(東レ(株)製T−
60#50)の表面にメラミン樹脂系インキ(大日精化
工業(株)製)を0.3g/m2 塗布し、170℃、2
0秒間で焼付けして離型層22とし、離型性基体シート
2を作製した。次に以下の電離放射線硬化型樹脂組成物
(A)を該離型性基体シート上の全面にグラビア印刷法
により塗布し、60℃、1分間の乾燥で溶剤を揮発、除
去し、塗布量1g/m2 の非粘着固体の第1電離放射線
硬化型樹脂層31(未硬化状態)を得た。 電離放射線硬化型樹脂組成物(A) アクリレートモノマー (ジペンタエリスリトールヘキサアクリレート) 20重量部 非架橋型熱可塑性樹脂 (ポリメタクリル酸メチル) 40重量部 (三菱レーヨン(株)製 ダイヤナールBR−80, 平均分子量95000,ガラス転移温度105℃) 無機充填剤 (シリカ) 20重量部 (γ−メタクリロキシプロピルトリメトキシシランで表面処理) 滑剤 (ポリエチレンワックス) 5重量部 溶剤 (メチルエチルケトン:トルエン=1:1) 60重量部 次に以下の電離放射線硬化型樹脂組成物(B)を該第1
電離放射線硬化型樹脂層の上にグラビア印刷法により塗
布し、60℃、1分間の乾燥で溶剤を揮発、除去し、塗
布量2g/m2 の第2電離放射線硬化型樹脂層32を得
て、これらより電離放射線硬化型樹脂保護層3を得た。 電離放射線硬化型樹脂組成物(B) アクリレートプレポリマー (ジペンタエリスリトールヘキサウレタンアクリレート) 10重量部 非架橋型熱可塑性樹脂 (ポリメタクリル酸メチル) 20重量部 (三菱レーヨン(株)製 ダイヤナールBR−80, 平均分子量95000,ガラス転移温度105℃) 無機充填剤 (シリカ) 20重量部 (γ−メタクリロキシプロピルトリメトキシシランで表面処理) 溶剤 (メチルエチルケトン:トルエン=1:1) 60重量部 次に絵柄層用インキとして、導電性インキ(触媒化成工
業(株)製 エルコム)をグラビア印刷法により、該第
2電離放射線硬化型樹脂層の上に塗布し、乾燥して溶剤
を揮発除去し、塗布量1g/m2 の絵柄層4を得た。さ
らに、塩化ビニル−酢酸ビニル共重合体系接着剤(大日
精化工業(株)製)を塗布し乾燥して、塗布量1g/m
2 の接着剤層5を得た。次に接着剤層側から、電子線1
75keV、8Mradの条件で照射して、第1及び第
2の電離放射線硬化型樹脂層を硬化させて転写シート1
を得た。この転写シートを用いて、被転写体としてアク
リル樹脂板(三菱レイヨン(株)製アクリライト)の表
面に転写シートの接着剤層を向かい合わせて密着させ、
表面温度200℃のシリコンゴムローラーにより圧力1
0kg/cm2 、搬送速度2m/minで加圧加熱後、
転写シートの離型性基体シートを引き剥がし、アクリル
樹脂板に最表面を第1電離放射線硬化樹脂層とする第1
及び第2の電離放射線硬化型樹脂層を転写した。
Example 1 In order to obtain a transfer sheet as illustrated in FIG. 1, a biaxially stretched polyethylene terephthalate film (T-manufactured by Toray Industries, Inc.) was used as the base film 21.
60 # 50) surface was coated with 0.3 g / m 2 of melamine resin-based ink (manufactured by Dainichiseika Kogyo Co., Ltd.), 170 ° C., 2
By baking for 0 seconds to form the release layer 22, the releasable base sheet 2 was produced. Next, the following ionizing radiation curable resin composition (A) is applied to the entire surface of the releasable substrate sheet by a gravure printing method, the solvent is volatilized and removed by drying at 60 ° C. for 1 minute, and a coating amount of 1 g A non-adhesive solid first ionizing radiation curable resin layer 31 (uncured state) of / m 2 was obtained. Ionizing radiation curable resin composition (A) Acrylate monomer (dipentaerythritol hexaacrylate) 20 parts by weight Non-crosslinking type thermoplastic resin (polymethylmethacrylate) 40 parts by weight (Mitsubishi Rayon Co., Ltd., DIANAR BR-80, Average molecular weight 95,000, glass transition temperature 105 ° C.) Inorganic filler (silica) 20 parts by weight (surface treatment with γ-methacryloxypropyltrimethoxysilane) Lubricant (polyethylene wax) 5 parts by weight Solvent (methyl ethyl ketone: toluene = 1: 1) 60 parts by weight Next, the following ionizing radiation curable resin composition (B) is added to the first
It is applied on the ionizing radiation curable resin layer by a gravure printing method, and the solvent is volatilized and removed by drying at 60 ° C. for 1 minute to obtain a second ionizing radiation curable resin layer 32 having a coating amount of 2 g / m 2 . From these, an ionizing radiation curable resin protective layer 3 was obtained. Ionizing radiation curable resin composition (B) Acrylate prepolymer (dipentaerythritol hexaurethane acrylate) 10 parts by weight Non-crosslinking type thermoplastic resin (polymethylmethacrylate) 20 parts by weight (Mitsubishi Rayon Co., Ltd. Dianal BR- 80, average molecular weight 95,000, glass transition temperature 105 ° C.) Inorganic filler (silica) 20 parts by weight (surface treatment with γ-methacryloxypropyltrimethoxysilane) Solvent (methyl ethyl ketone: toluene = 1: 1) 60 parts by weight Next pattern As a layer ink, a conductive ink (Calco Kasei Kogyo Co., Ltd. Elcom) is applied on the second ionizing radiation curable resin layer by a gravure printing method, dried to volatilize and remove the solvent, and the coating amount A pattern layer 4 of 1 g / m 2 was obtained. Furthermore, a vinyl chloride-vinyl acetate copolymer adhesive (manufactured by Dainichiseika Kogyo Co., Ltd.) is applied and dried to give an application amount of 1 g / m 2.
The adhesive layer 5 of 2 was obtained. Next, from the adhesive layer side, the electron beam 1
Irradiation is performed under the conditions of 75 keV and 8 Mrad to cure the first and second ionizing radiation curable resin layers, thereby transferring the transfer sheet 1.
I got Using this transfer sheet, the adhesive layer of the transfer sheet is face-to-face adhered to the surface of an acrylic resin plate (Acrylite manufactured by Mitsubishi Rayon Co., Ltd.) as a transfer target,
Pressure 1 by silicon rubber roller with surface temperature of 200 ℃
After pressurizing and heating at 0 kg / cm 2 and a conveying speed of 2 m / min,
First, the releasable substrate sheet of the transfer sheet is peeled off, and the outermost surface of the acrylic resin plate is the first ionizing radiation curable resin layer.
And the second ionizing radiation curable resin layer was transferred.

【0034】(比較例1)基体フィルムとして、2軸延
伸ポリエチレンテレフタレートフィルム(東レ(株)製
T−60#50)の表面にメラミン樹脂系インキ(大日
精化工業(株)製)を0.3g/m2 塗布し、170
℃、20秒間で焼付けして離型層とし、離型性基体シー
トを作製した。次に以下の電離放射線硬化型樹脂組成物
(C)を該離型性基体シート上の全面にグラビア印刷法
により塗布し、60℃、1分間の乾燥で溶剤を揮発、除
去し、塗布量3g/m2 の電離放射線硬化型樹脂層を得
た。 電離放射線硬化型樹脂組成物(C) アクリレートモノマー (ジペンタエリスリトールヘキサアクリレート) 20重量部 アクリレートプレポリマー (ジペンタエリスリトールヘキサウレタンアクリレート) 10重量部 非架橋型熱可塑性樹脂 (ポリメタクリル酸メチル) 60重量部 (三菱レーヨン(株)製 ダイヤナールBR−80, 平均分子量95000,ガラス転移温度105℃) 無機充填剤 (シリカ) 40重量部 (γ−メタクリロキシプロピルトリメトキシシランで表面処理) 滑剤 (ポリエチレンワックス) 5重量部 溶剤 (メチルエチルケトン:トルエン=1:1) 120重量部 次に、絵柄層、接着剤層を実施例1と同様に形成して転
写シートを得た。さらに、実施例1と同様に5mm厚の
アクリル樹脂板に転写を行った。
Comparative Example 1 As a base film, a melamine resin ink (manufactured by Dainichiseika Kogyo Co., Ltd.) was used on the surface of a biaxially stretched polyethylene terephthalate film (T-60 # 50 manufactured by Toray Co., Ltd.). Apply 3g / m 2 and 170
By baking at 20 ° C. for 20 seconds to form a release layer, a releasable substrate sheet was produced. Next, the following ionizing radiation-curable resin composition (C) is applied to the entire surface of the releasable substrate sheet by a gravure printing method, and the solvent is volatilized and removed by drying at 60 ° C. for 1 minute to obtain a coating amount of 3 g. An ionizing radiation-curable resin layer of / m 2 was obtained. Ionizing radiation curable resin composition (C) Acrylate monomer (dipentaerythritol hexaacrylate) 20 parts by weight Acrylate prepolymer (dipentaerythritol hexaurethane acrylate) 10 parts by weight Non-crosslinking thermoplastic resin (polymethylmethacrylate) 60 parts by weight Parts (Mitsubishi Rayon Co., Ltd., DIANAL BR-80, average molecular weight 95,000, glass transition temperature 105 ° C.) Inorganic filler (silica) 40 parts by weight (surface treatment with γ-methacryloxypropyltrimethoxysilane) Lubricant (polyethylene wax ) 5 parts by weight Solvent (methyl ethyl ketone: toluene = 1: 1) 120 parts by weight Next, a pattern layer and an adhesive layer were formed in the same manner as in Example 1 to obtain a transfer sheet. Further, similarly to Example 1, transfer was performed on a 5 mm thick acrylic resin plate.

【0035】(測定・評価方法)以下に測定・評価方法
を記載する。但し、屈曲性、延伸性は転写シートの状態
で測定し、その他はアクリル樹脂板に転写した状態で測
定した。
(Measurement / Evaluation Method) The measurement / evaluation method will be described below. However, the flexibility and stretchability were measured in the state of the transfer sheet, and the others were measured in the state of being transferred to the acrylic resin plate.

【0036】(鉛筆硬度)JIS K5400に準拠し
て測定を行った。
(Pencil Hardness) The pencil hardness was measured according to JIS K5400.

【0037】(爪スクラッチ性)人指し指の爪でサッと
引っかく。
(Nail Scratch Property) It is scratched quickly with the nail of the index finger.

【0038】(摩耗性)RCA摩耗にて荷重2.75N
をかけ、被転写体が露出するまでの回数。
(Abrasivity) Load of 2.75N due to RCA wear
The number of times it takes for the transfer target to be exposed.

【0039】(スチールウール性)被転写体に転写され
た表面を、スチールウール#0000を用いて手で軽く
擦り、表面に傷など外観変化が生じるまでの回数を測定
した。
(Steel Wool Property) The surface transferred to the transferred material was lightly rubbed with steel wool # 0000 by hand, and the number of times until appearance change such as scratches on the surface was measured.

【0040】(屈曲性)屈曲試験機にて可撓性を評価し
た。転写シートを180°曲げるときクラックが発生し
ない半径R〔mm〕の最小値。
(Flexibility) Flexibility was evaluated with a bending tester. Minimum value of radius R [mm] at which cracks do not occur when the transfer sheet is bent 180 °.

【0041】(延伸性)引張試験機にて、10mm/分
の速度で引張り、転写シートの電離放射線硬化型樹脂保
護層にクラックが発生するまでの伸び率〔%〕を測定し
た。
(Stretchability) Tensile tester was used to pull at a rate of 10 mm / min to measure the elongation rate [%] until cracks were generated in the ionizing radiation-curable resin protective layer of the transfer sheet.

【0042】[0042]

【表1】 [Table 1]

【0043】[0043]

【発明の効果】本発明請求項1の転写シートは、十分な
耐擦傷性、耐摩耗性と十分な可撓性、延伸性という従来
両立しなかった保護層の物性を共に両立させることが出
来る。本発明請求項2の転写シートは、以上に加えて、
保護層の乾燥時の非粘着性が良好であり、通常の印刷、
塗工法で量産可能であり、また、保護層の可撓性、延伸
線も、より良好な為、特に射出成形同時転写等の凹凸基
材への転写に好適である。
EFFECTS OF THE INVENTION The transfer sheet according to claim 1 of the present invention can achieve both physical properties of the protective layer, which are not compatible with each other, such as sufficient scratch resistance, abrasion resistance, sufficient flexibility, and stretchability. . The transfer sheet according to claim 2 of the present invention is, in addition to the above,
The non-tackiness of the protective layer during drying is good, and normal printing,
Since it can be mass-produced by a coating method, and the flexibility and stretch line of the protective layer are better, it is particularly suitable for transfer to an uneven base material such as simultaneous injection molding transfer.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明の転写シートの一実施例を示す縦断面
図。
FIG. 1 is a longitudinal sectional view showing an embodiment of a transfer sheet of the present invention.

【符号の説明】[Explanation of symbols]

1 転写シート 2 基体シート 21 基体フィルム 22 離型層 3 電離放射線硬化型樹脂保護層 31 第1電離放射線硬化型樹脂層 32 第2電離放射線硬化型樹脂層 4 絵柄層 5 接着剤層 DESCRIPTION OF SYMBOLS 1 Transfer sheet 2 Base sheet 21 Base film 22 Release layer 3 Ionizing radiation curable resin protective layer 31 1st ionizing radiation curable resin layer 32 2nd ionizing radiation curable resin layer 4 Picture layer 5 Adhesive layer

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 少なくとも、離型性基体シート上に転写
層として電離放射線硬化型樹脂保護層を有する転写シー
トに於いて、該電離放射線硬化型樹脂保護層が、1分子
中に2個以上のアクリロイル基又はメタクリロイル基を
有するモノマーを含有し転写時に最表面層となる第1電
離放射線硬化型樹脂層と、その裏面に積層された1分子
中に2個以上のアクリロイル基又はメタクリロイル基を
有するプレポリマーを含有する第2電離放射線硬化型樹
脂層との積層体からなることを特徴とする転写シート。
1. A transfer sheet having an ionizing radiation-curable resin protective layer as a transfer layer on at least a releasable substrate sheet, wherein the ionizing radiation-curable resin protective layer comprises two or more in one molecule. A first ionizing radiation curable resin layer which contains a monomer having an acryloyl group or a methacryloyl group and becomes an outermost surface layer at the time of transfer, and a pre-polymer having two or more acryloyl groups or methacryloyl groups in one molecule laminated on the back surface thereof. A transfer sheet comprising a laminate with a second ionizing radiation curable resin layer containing a polymer.
【請求項2】 第1電離放射線硬化型樹脂層と第2電離
放射線硬化型樹脂層の少なくとも1層に非架橋型熱可塑
性樹脂を含有することを特徴とする請求項1記載の転写
シート。
2. The transfer sheet according to claim 1, wherein at least one layer of the first ionizing radiation curable resin layer and the second ionizing radiation curable resin layer contains a non-crosslinking type thermoplastic resin.
JP27021294A 1994-10-11 1994-10-11 Transfer sheet Pending JPH08108695A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP27021294A JPH08108695A (en) 1994-10-11 1994-10-11 Transfer sheet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP27021294A JPH08108695A (en) 1994-10-11 1994-10-11 Transfer sheet

Publications (1)

Publication Number Publication Date
JPH08108695A true JPH08108695A (en) 1996-04-30

Family

ID=17483105

Family Applications (1)

Application Number Title Priority Date Filing Date
JP27021294A Pending JPH08108695A (en) 1994-10-11 1994-10-11 Transfer sheet

Country Status (1)

Country Link
JP (1) JPH08108695A (en)

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