JPH06254485A - Production of scratch-resistant light permeable molded product having embossed patterns on its surface - Google Patents

Production of scratch-resistant light permeable molded product having embossed patterns on its surface

Info

Publication number
JPH06254485A
JPH06254485A JP5045489A JP4548993A JPH06254485A JP H06254485 A JPH06254485 A JP H06254485A JP 5045489 A JP5045489 A JP 5045489A JP 4548993 A JP4548993 A JP 4548993A JP H06254485 A JPH06254485 A JP H06254485A
Authority
JP
Japan
Prior art keywords
resin film
thermoplastic resin
scratch
embossed pattern
producing
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.)
Withdrawn
Application number
JP5045489A
Other languages
Japanese (ja)
Inventor
Hironobu Takahama
裕宣 高濱
Takeshi Ichida
健 市田
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.)
Nippon Steel Corp
Nippon Steel Chemical and Materials Co Ltd
Original Assignee
Nippon Steel Corp
Nippon Steel Chemical 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 Nippon Steel Corp, Nippon Steel Chemical Co Ltd filed Critical Nippon Steel Corp
Priority to JP5045489A priority Critical patent/JPH06254485A/en
Publication of JPH06254485A publication Critical patent/JPH06254485A/en
Withdrawn legal-status Critical Current

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  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Laminated Bodies (AREA)

Abstract

PURPOSE:To enhance production efficiency, in the production of the title molded product for a wall, by spraying a crosslinkable compd.-containing org. solvent paint on a composite object obtained by thermally fusing a transparent thermoplastic resin film to a light permeable sheet to form an uneven surface and subsequently curing the paint. CONSTITUTION:A transparent thermoplastic resin film composed of an acrylic resin film containing an ultraviolet absorber is laminated to at least one surface of a transparent sheet 1 composed of polycarbonate to form a composite. Then, org. solvent paint containing a crosslinkable compd. is applied to the transparent thermoplastic resin film 2 to form an uneven shape on the surface of the film 2 and the coated film 2 is cured to form a film 3. This org. solvent paint is prepared by adding 10-40 pts.wt. of an ester type compd. to 100 pts.wt. of a crosslinkable compd. such as trimethylol melamine. The thermal fusion of the transparent thermoplastic resin film 2 is performed under tension of 5-15kgf/m.

Description

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

【0001】[0001]

【産業上の利用分野】本発明は室内の壁、窓、目かく
し、装飾品、ビルの外壁、車の部品、レクリエーション
用の乗り物等の各種成形品に使用する基材表面に耐擦傷
性に優れたエンボス模様を有する透光性樹脂成形品、特
に耐候性を有するポリカーボネート樹脂成形品に関す
る。
BACKGROUND OF THE INVENTION The present invention provides a surface of a substrate for use in various molded articles such as interior walls, windows, blinds, ornaments, exterior walls of buildings, car parts, recreational vehicles, etc. The present invention relates to a translucent resin molded product having an excellent embossed pattern, particularly a polycarbonate resin molded product having weather resistance.

【0002】[0002]

【従来の技術】従来、ガラス、熱硬化性アクリル樹脂お
よび塩ビ、アクリル樹脂、ポリカーボネート樹脂に代表
される熱可塑性樹脂は、その光学的透明性から各種建造
物の採光材、自動車の部品、各種装飾品として広く利用
されている。
2. Description of the Related Art Conventionally, thermoplastic resins typified by glass, thermosetting acrylic resin and vinyl chloride, acrylic resin, and polycarbonate resin are used for daylighting materials of various structures, automobile parts, and various decorations because of their optical transparency. Widely used as a product.

【0003】しかしながら、都市部における建造物の高
層化、高密度化に伴い、太陽光が反射し、周辺住民がま
ぶしく感じたり、プライバシーを保護する観点から、全
光線透過率を高く保ちながらも、表面光沢を抑え、かつ
平行光線透過率を低くすることで視認性を抑えた採光材
のニーズが高まりつつある。
However, with the increase in the number of buildings and the increase in density in urban areas, sunlight is reflected, the surrounding residents feel dazzling, and from the viewpoint of protecting privacy, while maintaining a high total light transmittance, There is an increasing need for a daylighting material with reduced visibility by suppressing surface gloss and lowering parallel light transmittance.

【0004】全光線透過率を高く保ちながら、視認性を
低く抑える方法としては、ガラスで言えばすりガラスの
様に透光性材料の表面にエンボス模様を付与すれば良
く、例えば樹脂板にエンボスロールを用いて平滑な表
面に機械的にエンボス模様を形成し、光学的に光を散乱
させる方法(特開昭63−151382号公報、特開昭
64−85232号公報)、表面にエンボス模様の加
工を施した鋳型中に透光性材料を流し込み賦形する方法
(特開昭49−45946号公報、特開昭53−288
55号公報、特開昭53−133267号公報)、ある
いは光を散乱、吸収する無機フィラーあるいは有機フ
ィラーを含有する塗料を透光性材料表面に塗装する方法
(特開昭52−20857号公報、特開平3−5884
0号公報)が用いられている。
As a method of keeping visibility low while keeping the total light transmittance high, an embossed pattern may be imparted to the surface of a translucent material like frosted glass in terms of glass, for example, an emboss roll on a resin plate. A method of mechanically forming an embossed pattern on a smooth surface and optically scattering light (JP-A-63-151382, JP-A-64-85232), and processing of the embossed pattern on the surface A method of pouring a light-transmitting material into a mold subjected to heat treatment and shaping (Japanese Patent Laid-Open No. 49-45946 and Japanese Patent Laid-Open No. 53-288).
55, JP-A-53-133267), or a method of applying a coating material containing an inorganic filler or an organic filler that scatters and absorbs light onto the surface of a light-transmitting material (JP-A-52-20857). Japanese Patent Laid-Open No. 3-5884
No. 0) is used.

【0005】しかしながら、前記およびの方法で
は、板状またはごく単純な形状にしか賦形できず、成形
体の形状が限られる上に、特別の形や装置を必要とし、
生産性も低い。前記の方法では、各種のフィラーの添
加により、塗料が本来持つ耐候性、耐擦傷性、耐薬品性
が損なわれる。
However, according to the above methods and, only a plate shape or a very simple shape can be formed, the shape of the molded body is limited, and a special shape or device is required.
Productivity is also low. In the above method, the addition of various fillers impairs the original weather resistance, scratch resistance, and chemical resistance of the paint.

【0006】[0006]

【発明が解決しようとする課題】本発明の目的は耐候
性、耐擦傷性、耐薬品性に優れた、表面にエンボス模様
を有する透光性成形品を効率よく製造する方法を提供す
ることである。
SUMMARY OF THE INVENTION An object of the present invention is to provide a method for efficiently producing a translucent molded article having an embossed pattern on the surface, which is excellent in weather resistance, scratch resistance and chemical resistance. is there.

【0007】[0007]

【課題を解決するための手段】本発明者らは、少なくと
も一方の面に透明性熱可塑性樹脂フィルムを一定張力で
熱融着させた透光性積層複合シートに対して、架橋性化
合物を含有する有機溶剤塗料をスプレイ塗装した所、被
覆透明性熱可塑性フィルムが有機溶剤塗料に浸され、当
初、均一であった膜厚にむらが発生し、その結果透光性
積層複合シート表面に微細なエンボス模様が形成される
ことを知見した。そこで、その状態で固定すべく、その
架橋性化合物含有有機溶剤塗料を熱又は電離放射線照射
等によって表面硬化を行うことにより耐候性、耐擦傷
性、耐薬品性に優れた表面にエンボス模様を有する透光
性成形品が得られることを見い出し、本発明を完成し
た。
DISCLOSURE OF THE INVENTION The inventors of the present invention have incorporated a crosslinkable compound into a translucent laminated composite sheet in which a transparent thermoplastic resin film is heat-fused at a constant tension on at least one surface. When the organic solvent paint is spray-coated, the coated transparent thermoplastic film is soaked in the organic solvent paint, which causes unevenness in the initially uniform film thickness. It was found that an embossed pattern was formed. Therefore, in order to fix in that state, the cross-linkable compound-containing organic solvent coating is surface-cured by heat or ionizing radiation irradiation to have an embossed pattern on the surface excellent in weather resistance, scratch resistance, and chemical resistance. The present invention has been completed by finding that a translucent molded product can be obtained.

【0008】すなわち本発明は次の通りである。 (1) 透光性シートの少なくとも一方の面に透明性熱
可塑性樹脂フィルムを熱融着した積層複合体に対して架
橋性化合物を含有する有機溶剤塗料をスプレイ塗装し、
表面に凹凸形状を生じさせたあと、該有機溶剤塗料を硬
化させることを特徴とする表面にエンボス模様を有する
耐擦傷性透光性成形品の製造方法。
That is, the present invention is as follows. (1) An organic solvent paint containing a crosslinkable compound is spray-coated on a laminated composite in which a transparent thermoplastic resin film is heat-sealed on at least one surface of a translucent sheet,
A method for producing a scratch-resistant translucent molded article having an embossed pattern on the surface, which comprises curing the organic solvent paint after producing an uneven shape on the surface.

【0009】(2) 透光性シートが熱可塑性樹脂であ
り、透明性熱可塑性樹脂フィルムを熱融着させた後、任
意形状に成形し、成形物に架橋性化合物を含有する有機
溶剤塗料をスプレイ塗装する前項(1)記載の表面にエ
ンボス模様を有する耐擦傷性透光性成形品の製造方法。
(2) The light-transmissive sheet is a thermoplastic resin, and the transparent thermoplastic resin film is heat-sealed, and then molded into an arbitrary shape, and an organic solvent paint containing a crosslinkable compound is formed in the molded product. A method for producing a scratch-resistant translucent molded article having an embossed pattern on the surface according to the above (1), which is spray-coated.

【0010】(3) 透光性シートがポリカーボネート
樹脂である前項(1)又は(2)記載の表面にエンボス
模様を有する耐擦傷性透光性成形品の製造方法。
(3) The method for producing a scratch-resistant translucent molded article having an embossed pattern on the surface according to the above (1) or (2), wherein the translucent sheet is a polycarbonate resin.

【0011】(4) 透明性熱可塑性樹脂フィルムを熱
融着させる際の張力が5〜15kgf/mの範囲である前
項(1),(2),(3)のいずれかに記載の表面にエ
ンボス模様を有する耐擦傷性透光性成形品の製造方法。
(4) The surface of any one of the above (1), (2) and (3), wherein the tension when heat-sealing the transparent thermoplastic resin film is in the range of 5 to 15 kgf / m. A method for producing a scratch-resistant translucent molded article having an embossed pattern.

【0012】(5) 透明性熱可塑性樹脂フィルムが紫
外線吸収剤を含有するアクリル系樹脂フィルムである前
項(1),(2),(3),(4)のいずれかに記載の
表面にエンボス模様を有する耐擦傷性透光性成形品の製
造方法。
(5) The transparent thermoplastic resin film is an acrylic resin film containing an ultraviolet absorber, and the surface is embossed on any one of the above (1), (2), (3) and (4). A method for producing a scratch-resistant translucent molded article having a pattern.

【0013】(6) 架橋性化合物を含有する有機溶剤
塗料が、電離放射線架橋硬化型化合物を主成分とする前
項(1),(2),(3),(4),(5)のいずれか
に記載の表面にエンボス模様を有する耐擦傷性透光性成
形品の製造方法。
(6) Any one of the above (1), (2), (3), (4) and (5), wherein the organic solvent paint containing a crosslinkable compound contains an ionizing radiation crosslinkable curable compound as a main component. A method for producing a scratch-resistant translucent molded article having an embossed pattern on its surface.

【0014】(7) 架橋性化合物を含有する有機溶剤
塗料中に、架橋性化合物100重量部に対して、エステ
ル系化合物を10重量部以上、40重量部以下添加した
前項(1),(2),(3),(4),(5),(6)
のいずれかに記載の表面にエンボス模様を有する耐擦傷
性透光性成形品の製造方法。
(7) In an organic solvent paint containing a crosslinkable compound, 10 parts by weight or more and 40 parts by weight or less of an ester compound is added to 100 parts by weight of the crosslinking compound. ), (3), (4), (5), (6)
5. A method for producing a scratch-resistant translucent molded article having an embossed pattern on the surface according to any one of 1.

【0015】本発明は広範な透光性シートを対象とする
ことができる。具体的には、ガラス、石英ガラスに代表
される無機系透光性材料並びにポリ塩化ビニル樹脂、ア
クリル樹脂およびポリカーボネート樹脂に代表される樹
脂系透光性材料の板状成形物である。
The present invention can be applied to a wide range of transparent sheets. Specifically, it is a plate-shaped molded product of an inorganic translucent material typified by glass and quartz glass and a resin translucent material typified by polyvinyl chloride resin, acrylic resin and polycarbonate resin.

【0016】これらの板状成形物に熱融着する透明性熱
可塑性樹脂フィルムとしては、アクリロニトリル・スチ
レン共重合樹脂(AS樹脂)、ブタジエン・スチレン・
メチルメタクリレート共重合樹脂(MBS樹脂)、メタ
クリル・スチレン共重合樹脂、ポリカーボネート樹脂、
ポリメチルメタクリレート樹脂、ポリスチレン樹脂、ポ
リ塩化ビニル樹脂等の非晶性樹脂で耐溶剤性に関して劣
る樹脂が望ましく、その厚みは発生させるエンボス模様
の大きさとコスト面の関係から50〜100μmの範囲
が望ましい。
As the transparent thermoplastic resin film which is heat-sealed to these plate-shaped moldings, acrylonitrile-styrene copolymer resin (AS resin), butadiene-styrene
Methyl methacrylate copolymer resin (MBS resin), methacrylic / styrene copolymer resin, polycarbonate resin,
Amorphous resins such as polymethylmethacrylate resin, polystyrene resin, and polyvinyl chloride resin, which are inferior in solvent resistance, are desirable, and the thickness thereof is preferably in the range of 50 to 100 μm in view of the size of the embossed pattern to be generated and the cost. .

【0017】また基材となる板状成形物に対して透明性
熱可塑性樹脂フィルムを一定張力下で熱融着させるが、
その方法としては、基材となる透光性シート成形の際の
オンライン時またはオフライン時に押圧ロールによる連
続的圧着法が望ましい。
Further, a transparent thermoplastic resin film is heat-sealed to a plate-shaped molded product as a base material under a constant tension.
As the method, it is desirable to use a continuous pressure bonding method using a pressure roll during the on-line or off-line formation of the light-transmitting sheet as the base material.

【0018】その際、透明性熱可塑性樹脂フィルムにか
かる張力を5〜15kgf/m、好ましくは8〜10kgf/
mの範囲で熱融着させることが必要である。その理由
は、張力が5kgf/m未満の場合では、貼付時に透明性
熱可塑性樹脂フィルムに皺が発生して、しかも架橋性化
合物を含有する有機溶剤塗料をスプレイ塗装してもエン
ボス模様の原因となる厚みむらが発生しないことがあ
る。
At that time, the tension applied to the transparent thermoplastic resin film is 5 to 15 kgf / m, preferably 8 to 10 kgf / m.
It is necessary to perform heat fusion in the range of m. The reason is that when the tension is less than 5 kgf / m, wrinkles are generated in the transparent thermoplastic resin film at the time of application, and even if the organic solvent paint containing the crosslinkable compound is spray-coated, it may cause an embossed pattern. In some cases, uneven thickness does not occur.

【0019】また張力が15kgf/mを越える場合で
は、架橋性化合物を含有する有機溶剤塗料をスプレイ塗
装した場合、被覆した熱可塑性樹脂フィルムに発生する
厚みむらが大きく、最も薄いところでは、その厚みが1
0μm以下になり、紫外線吸収剤を含有した熱可塑性樹
脂フィルムを使用した場合でも、基材に対して耐候性付
与の効果を発現させない場合がある。
When the tension exceeds 15 kgf / m, when the organic solvent paint containing the crosslinkable compound is spray-coated, the thickness unevenness generated in the coated thermoplastic resin film is large, and at the thinnest place, the thickness is large. Is 1
The thickness is 0 μm or less, and even when a thermoplastic resin film containing an ultraviolet absorber is used, the effect of imparting weather resistance to the substrate may not be exhibited.

【0020】基材がガラス等の太陽光線に当っても変色
しない材質の場合は問題ないが、太陽光線にさらされて
変色する基材の場合、透明性熱可塑性樹脂フィルムに紫
外線吸収剤を含有させて、基材の変色を防いで耐候性を
付与することができる。耐候性に欠ける基材としては、
ポリカーボネート樹脂があるが、この場合、耐候性を付
与する紫外線吸収剤を含有した熱可塑性フィルムとして
は、アクリル系樹脂フィルムがあり、具体的には鐘淵化
学(株)製商標名「サンデュレン」、三菱レイヨン
(株)製商標名「アクリプレン」が市販されている。
There is no problem if the substrate is a material such as glass that does not discolor even when exposed to sunlight, but in the case of a substrate that discolors when exposed to sunlight, a transparent thermoplastic resin film contains an ultraviolet absorber. By doing so, it is possible to prevent discoloration of the substrate and impart weather resistance. As a base material lacking in weather resistance,
Although there is a polycarbonate resin, in this case, as the thermoplastic film containing an ultraviolet absorber imparting weather resistance, there is an acrylic resin film, specifically, Kanefuchi Chemical Co., Ltd. trade name "Sanduren", The Mitsubishi Rayon Co., Ltd. trade name "Acryprene" is commercially available.

【0021】有機溶剤塗料に含有される架橋性化合物と
しては、熱硬化法を用いるものとして、トリメチロール
メラミン、ヘキサメチロールメラミン、ブトキシメチロ
ールメラミン、エーテル化メチルメラミンに代表される
メラミン系の硬化物を形成するもの、テトラエトキシシ
ラン、トリエトキシメチルシラン、トリエトキシフェニ
ルシラン、トリメチルフェニルシランに代表されるアル
コキシシラン類、あるいはその官能基の一部が−CH=
CH2、−CH2−NH2
As the crosslinkable compound contained in the organic solvent paint, a melamine-based cured product represented by trimethylolmelamine, hexamethylolmelamine, butoxymethylolmelamine, and etherified methylmelamine can be used by using a thermosetting method. What is formed, tetraethoxysilane, triethoxymethylsilane, triethoxyphenylsilane, alkoxysilanes typified by trimethylphenylsilane, or a part of the functional group thereof is -CH =
CH 2, -CH 2 -NH 2,

【化1】 −OCO−CCH3=CH2、−CH2OH、−CH2SH
等の反応性官能基に置換された3官能性、や4官能性オ
ルガノシランが知られており、一般に広く使われてい
る。
[Chemical 1] -OCO-CCH 3 = CH 2, -CH 2 OH, -CH 2 SH
Trifunctional or tetrafunctional organosilane substituted with a reactive functional group such as is known, and is widely used in general.

【0022】また同じく架橋性化合物として電離放射線
硬化法を用いるものがあり、例えば、不飽和ポリエステ
ル、ポリエーテルアクリレート、ポリエステルアクリレ
ート、エポキシアクリレート、ウレタンアクリレート、
スピロアセタールアクリレート、ポリブタジエンポリチ
オールポリエン等の電離放射線硬化性化合物を用いるこ
とが出来る。
Similarly, as the crosslinkable compound, there is one using an ionizing radiation curing method, and examples thereof include unsaturated polyester, polyether acrylate, polyester acrylate, epoxy acrylate, urethane acrylate,
Ionizing radiation-curable compounds such as spiro acetal acrylate and polybutadiene polythiol polyene can be used.

【0023】これら電離放射線硬化性化合物には、更に
2官能モノマー、例えばネオペンチルグリコールジアク
リレート、トリプロピレングリコールジアクリレート、
ジエチレングリコールジアクリレート、1,6‐ヘキサ
ンジオールジアクリレート等、もしくは3官能モノマ
ー、例えばトリメチロールプロパントリアクリレート、
ペンタエリスリトールトリアクリレート、ジペンタエリ
スリトールヘキサアクリレート等の多官能のモノマーを
混合して用いることが出来る。多官能モノマーとしては
この他にも、4官能、5官能もしくは6官能のものも使
用できる。
These ionizing radiation curable compounds further include bifunctional monomers such as neopentyl glycol diacrylate, tripropylene glycol diacrylate,
Diethylene glycol diacrylate, 1,6-hexanediol diacrylate, etc., or trifunctional monomers such as trimethylolpropane triacrylate,
Polyfunctional monomers such as pentaerythritol triacrylate and dipentaerythritol hexaacrylate can be mixed and used. Other than this, tetrafunctional, pentafunctional or hexafunctional monomers can also be used.

【0024】上記の電離放射線硬化性塗料には、必要に
応じて添加する多官能モノマー以外に、紫外線照射で硬
化させる場合には光開始剤、例えば、アセトフェノン
類、ベンゾフェノン、ミヒラーケトン、ベンゾイン、ベ
ンジルメチルケタール、ベンゾイルベンゾエート、α‐
アミロキシムエステル、テトラメチルチウラムサルファ
イド、チオキサンソン類等や増感剤、例えばn‐ブチル
アミン、トリエチルアミン、トリ‐n‐ブチルホスフィ
ン等を添加すると良い。
In the above-mentioned ionizing radiation-curable coating material, in addition to the polyfunctional monomer added as necessary, when it is cured by ultraviolet irradiation, a photoinitiator such as acetophenones, benzophenone, Michler's ketone, benzoin, benzylmethyl is used. Ketal, benzoyl benzoate, α-
It is advisable to add amyloxime ester, tetramethyl thiuram sulfide, thioxanthones and the like and sensitizers such as n-butylamine, triethylamine and tri-n-butylphosphine.

【0025】前記塗料の塗布法は、スプレイコーティン
グ法を用いる。使用するスプレイガンは、一般的に用い
られるエアガンで良く、口径は1.3mmφ程度、使用す
る空気圧は3〜5kgf/cm2が好ましい。コーティング時
の塗布厚みとしては、充分な耐擦傷性と良好な凹凸模様
を有する成形体表面を得るためには、5μm以上が好ま
しく、20μm超では一定張力で貼付した熱可塑性樹脂
フィルムを部分的に溶解させてしまうか、あるいは極端
に薄肉化してしまうおそれがあり、外観的に良好な表面
凹凸が得られ、かつ良好な耐擦傷性が得られたとして
も、耐紫外線遮蔽能力が損なわれ、屋外もしくは屋内で
も太陽光線が直接当たるような窓近辺で使用する場合、
局部的に黄褐色に変色する恐れがある。従って、充分な
耐擦傷性を与え、かつ本来の耐候性を損なわない程度に
一定張力で熱融着した熱可塑性樹脂フィルムにエンボス
模様を与える塗膜厚みとしては15μm以下であること
が望ましい。
A spray coating method is used as the coating method of the coating material. The spray gun to be used may be a commonly used air gun, preferably having a diameter of about 1.3 mmφ and an air pressure of 3 to 5 kgf / cm 2 . The coating thickness at the time of coating is preferably 5 μm or more in order to obtain a surface of a molded article having sufficient scratch resistance and a good uneven pattern. Above 20 μm, the thermoplastic resin film stuck at a constant tension is partially applied. There is a possibility that it will be dissolved or the wall thickness will be extremely thin, and even if good surface irregularities are obtained in appearance and good scratch resistance is obtained, the UV blocking resistance is impaired and the outdoors. Or if you use it near the window where the sunlight directly hits indoors,
May locally turn yellowish brown. Therefore, it is desirable that the coating thickness is 15 μm or less, which gives sufficient scratch resistance and gives an embossed pattern to the thermoplastic resin film which is heat-fused with a constant tension so as not to impair the original weather resistance.

【0026】スプレイコーティングする際、前記架橋性
化合物を主体とする塗料で均一な塗膜を形成させるため
に粘度調整を行う必要があるが、一般的な有機溶剤とし
て、ブタノール、2‐プロパノール等のアルコール系、
エチルメチルケトン、エチルブチルケトン等のケトン
系、トルエン、キシレン等の芳香族系などの有機溶剤が
用いられるが、これら各種有機溶剤と共に、酢酸ブチル
エステル、酢酸1‐プロピルエステル等のエステル系化
合物の内で少なくとも1種類で、全含有量が架橋性化合
物を主体とする塗料固形分100重量部に対して、10
重量部以上、望ましくは20重量部以上、40重量部以
下混合されていることが好ましい。
When spray coating, it is necessary to adjust the viscosity in order to form a uniform coating film with a coating material mainly composed of the above-mentioned crosslinkable compound, but as a general organic solvent, butanol, 2-propanol and the like are used. Alcoholic,
Organic solvents such as ketone-based compounds such as ethyl methyl ketone and ethyl butyl ketone and aromatic-based compounds such as toluene and xylene are used, and together with these various organic solvents, ester-based compounds such as butyl acetate and 1-propyl acetate. At least one of them is used, and the total content is 10 parts with respect to 100 parts by weight of the solid content of the coating composition mainly composed of the crosslinkable compound.
It is preferable that they are mixed in an amount of not less than 20 parts by weight, preferably not less than 20 parts by weight and not more than 40 parts by weight.

【0027】これらエステル系化合物は、塗料の粘度調
整をするだけでなく、架橋性化合物からなる塗膜そのも
のに耐候性を付与する目的で添加されている紫外線吸収
剤、光開始剤等を溶解させる点からも必要であるばかり
でなく、一定張力下で熱融着させた透明性熱可塑性樹脂
フィルムに対して適当な溶解と膨潤を引き起こし部分的
にその緊張を弛緩させてエンボス模様を発生させる意味
で極めて有効である。エステル化合物の含有量が10重
量部未満では、前記紫外線吸収剤等の添加剤が析出する
場合もあり得るし、40重量部超では、加熱もしくは電
離放射線を照射して架橋性化合物を硬化させる前の乾燥
工程が長くなり、生産性が損なわれるのみならず、透明
性熱可塑性樹脂フィルムを部分的に溶解させて基材が露
出し、成形品の耐候性が損なわれる場合がある。これら
の理由からエステル系有機溶剤の含有量は10重量部以
上、40重量部以下が望ましい。
These ester compounds dissolve not only the viscosity of the coating composition but also the ultraviolet absorber, photoinitiator, etc. added for the purpose of imparting weather resistance to the coating film itself composed of the crosslinkable compound. It is not only necessary from the point of view, but it also means that it causes appropriate melting and swelling to the transparent thermoplastic resin film heat-sealed under a constant tension, and partially relaxes the tension to generate an embossed pattern. Is extremely effective at. If the content of the ester compound is less than 10 parts by weight, the additive such as the ultraviolet absorber may be precipitated, and if it exceeds 40 parts by weight, the crosslinking compound is cured by heating or irradiation with ionizing radiation. The drying step becomes longer and the productivity is impaired, and the transparent thermoplastic resin film is partially dissolved to expose the base material, which may impair the weather resistance of the molded article. For these reasons, the content of the ester organic solvent is preferably 10 parts by weight or more and 40 parts by weight or less.

【0028】電離放射線としては、紫外線もしくは電子
線が代表的である。電子線の場合、コックロフトワルト
ン型、バンデクラフ型、共振変圧器型、絶縁コア変圧器
型、直線型、ダイナミトロン型、高周波型などの各種電
子線加速器から放出された50〜1000keV、好まし
くは100〜300keVの範囲のエネルギーを持つ電子
線を用いる。また紫外線の場合、超高圧水銀灯、高圧水
銀灯、低圧水銀灯、カーボンアーク、メタルハライドラ
ンプなどの光源を用いた紫外線源から発するものを用い
る。
As the ionizing radiation, ultraviolet rays or electron beams are typical. In the case of electron beam, 50-1000 keV, preferably 100, emitted from various electron beam accelerators such as Cockloft-Walton type, Bande-Cluff type, resonance transformer type, insulating core transformer type, linear type, dynamitron type, and high frequency type. An electron beam with an energy in the range of ~ 300 keV is used. In the case of ultraviolet rays, those emitted from an ultraviolet ray source using a light source such as an ultra-high pressure mercury lamp, a high pressure mercury lamp, a low pressure mercury lamp, a carbon arc, and a metal halide lamp are used.

【0029】本製造法によるエンボス模様を成す表面凹
凸は、粗度の高低差Rmax(JIS−B0601によ
る測定)で1〜40μmが可能であるが、外観上の観点
および透明性熱可塑性樹脂フィルムの必要厚みの保持の
点から5〜20μmであることが好ましい。また両面に
同様な、あるいは異なるエンボス模様を施すことによ
り、より視認性を低く抑えることが出来、プライバシー
保護の観点から、より適した採光材を得ることができ
る。本発明の方法で製造したエンボス模様を有する耐擦
傷性透光性成形品の断面図を図1に示す。
The surface irregularities forming the embossed pattern according to the present manufacturing method can have a roughness difference Rmax (measured according to JIS-B0601) of 1 to 40 μm, but in terms of appearance and of the transparent thermoplastic resin film. From the viewpoint of maintaining the required thickness, it is preferably 5 to 20 μm. Further, by providing the same or different embossed patterns on both sides, the visibility can be further suppressed, and a more suitable daylighting material can be obtained from the viewpoint of privacy protection. A cross-sectional view of a scratch-resistant translucent molded article having an embossed pattern produced by the method of the present invention is shown in FIG.

【0030】本発明によれば、艶消し材として各種添加
剤を使用することなく、エンボスロール等を用いて、機
械的に表面に凹凸を形成させる工程も必要とせず、また
予めエンボス模様を設けた鋳型内に材料を注入して表面
にエンボス模様を転写させることもなく、塗料をスプレ
イコーティングするだけの簡便な工程でエンボス模様を
有する表面を形成することが出来る。
According to the present invention, it is not necessary to use various additives as a matting agent, and to eliminate the need for a step of mechanically forming irregularities on the surface using an embossing roll or the like, and providing an embossed pattern in advance. It is possible to form a surface having an embossed pattern by a simple process of spray coating a paint without injecting a material into a mold and transferring the embossed pattern to the surface.

【0031】しかも、エンボス模様を有する成形体の欠
点であった汚れ易さについても、表面が架橋性塗膜で覆
われているために汚れが付き難く、また一度ついても
水、洗剤、ブラシ等を用いて容易に拭い去ることが出来
る。しかもエンボス模様を形成する熱可塑性樹脂フィル
ムに紫外線吸収剤を含有させれば、紫外線を遮蔽するこ
とが出来、ポリカーボネートの様に本来耐候性に欠ける
材料であっても耐光性を向上させることができ、屋外も
しくは窓近辺の比較的太陽光が当るような場所でも黄褐
色に変色することがなく使用できる。
Further, regarding the easiness of stains, which was a drawback of the molded product having an embossed pattern, since the surface is covered with the crosslinkable coating film, it is difficult for stains to occur, and even if it is adhered once, water, detergent, brush, etc. Can be easily wiped off with. In addition, if a thermoplastic resin film that forms an embossed pattern contains an ultraviolet absorber, it is possible to block ultraviolet rays and improve the light resistance of a material that originally lacks weather resistance, such as polycarbonate. , It can be used outdoors or in a place near windows where it is exposed to relatively sunlight without discoloring to yellowish brown.

【0032】[0032]

【実施例】以下に実施例によって、本発明を更に具体的
に説明するが、本発明はこの実施例によって何等限定さ
れるものではない。 (実施例1)温度80℃、張力5kgf/mの条件下で、
厚さ3mmのガラスに厚さ70μmの塩ビ樹脂フィルムを
貼付し、その表面に紫外線架橋型化合物固形分100重
量部に対して、エステル系化合物を40重量部含有する
有機溶媒系塗料(樹脂粘度(スプレイで塗装する塗料の
状態での粘度:15mPa・sec)をスプレイコーテ
ィング法により約10μmの厚さに均一に塗布した。4
0℃で10分間乾燥した後、80w/cm(単位長さ当
りの出力、以下同じ)の紫外線ランプを用いて塗料を架
橋させたところ、良好なエンボス模様を有する透光性材
料が得られた。
The present invention will be described in more detail with reference to the following examples, but the present invention is not limited to these examples. (Example 1) Under the conditions of a temperature of 80 ° C. and a tension of 5 kgf / m,
An organic solvent-based paint (resin viscosity (resin viscosity (resin viscosity (resin viscosity The viscosity of the paint applied by spraying: 15 mPa · sec) was uniformly applied to a thickness of about 10 μm by the spray coating method.
After drying at 0 ° C. for 10 minutes, the coating material was cross-linked using an 80 w / cm (output per unit length, the same applies below) ultraviolet ray lamp, and a translucent material having a good embossed pattern was obtained. .

【0033】本実施例1に基づく成形体を触針式粗さ測
定法(JISB601)によりエンボス模様の凹凸を測
定したところRmax=25μmであり、60度鏡面光
沢測定法(JIS K7105)の測定結果は65%、
平行光線透過率(JIS K7105)の測定結果は7
5%であった。
When the unevenness of the embossed pattern was measured by the stylus type roughness measuring method (JISB601) for the molded body based on this Example 1, Rmax = 25 μm, and the measurement result of the 60 degree specular gloss measurement method (JIS K7105). Is 65%,
The parallel light transmittance (JIS K7105) measurement result is 7
It was 5%.

【0034】(比較例1)厚さ3mmのガラスに直接、前
記実施例1の塗料を塗布し、硬化させたところ、光沢、
平行光線透過率および粗度Rmaxは各々130%、9
2%、0.3μmで、極めて平滑な塗膜面となり、基材
本来の表面のぎらつき、視認性を抑えることは出来なか
った。
(Comparative Example 1) When the coating material of Example 1 was applied directly to a glass having a thickness of 3 mm and cured, a glossiness was obtained.
The parallel light transmittance and the roughness Rmax are 130% and 9 respectively.
At 2% and 0.3 μm, an extremely smooth coating film surface was formed, and the original surface of the substrate was glaring and visibility could not be suppressed.

【0035】(実施例2)温度120℃、張力15kgf
/mの条件下で、厚さ5mmのポリカーボネートシート
に、厚さ50μmのアクリル樹脂フィルムを貼付し、そ
の表面に紫外線架橋型化合物固形分100重量部に対し
て、エステル系化合物を20重量部含有する有機溶媒系
塗料(樹脂粘度(スプレイで塗装する塗料の状態での粘
度):15mPa・sec)をスプレイコーティング法
により約10μmの厚さに均一に塗布した。60℃、1
0分間乾燥した後、80w/cmの紫外線ランプを用い
て塗料を架橋させたところ、良好なエンボス模様を有す
る透光性材料が得られた。
Example 2 Temperature 120 ° C., Tension 15 kgf
Under a condition of / m, a 50 μm thick acrylic resin film is attached to a 5 mm thick polycarbonate sheet, and 20 parts by weight of an ester compound is contained on the surface of 100 parts by weight of a solid content of an ultraviolet crosslinking compound. The organic solvent-based coating material (resin viscosity (viscosity of coating material applied by spraying): 15 mPa · sec) was uniformly applied to a thickness of about 10 μm by a spray coating method. 60 ° C, 1
After drying for 0 minutes, the paint was crosslinked using an 80 w / cm ultraviolet lamp, and a translucent material having a good embossed pattern was obtained.

【0036】本実施例2に基づく成形体の光沢、平行光
線透過率およびRmaxは、各々60%、73%、30
μmであり、しかもスチールウール#0000で擦って
も、傷が付かず良好な耐擦傷性が得られた。
The gloss, parallel light transmittance and Rmax of the molded product according to Example 2 were 60%, 73% and 30 respectively.
Even if it was rubbed with Steel Wool # 0000, no scratch was found and good scratch resistance was obtained.

【0037】(比較例2)厚さ5mmのポリカーボネート
シートに直接前記実施例2の塗料を塗布し、硬化させた
ところ、光沢、平行光線透過率およびRmaxは各々1
60%、87%、0.5μmで、極めて平滑な塗膜面と
なり、基材本来の表面のぎらつき、視認性を抑えること
は出来なかった。
(Comparative Example 2) When the coating material of Example 2 was directly applied to a polycarbonate sheet having a thickness of 5 mm and cured, the gloss, parallel light transmittance and Rmax were each 1
At 60%, 87% and 0.5 μm, an extremely smooth coating film surface was obtained, and the original surface of the base material could not be suppressed in glare and visibility.

【0038】(比較例3)実施例2と同じ条件で熱可塑
性樹脂フィルムを熱融着させた複合シートに対して、紫
外線架橋型化合物固形分100重量部に対して、エステ
ル化合物を50重量部含有する塗料をスプレイ塗装し、
紫外線エネルギーにより塗膜の架橋を行った。この成形
体の光沢、平行光線透過率およびRmaxは各々55
%、70%、40μmで外見上は良好なエンボス模様が
得られるものの、顕微鏡による断面観察では、熱可塑性
樹脂フィルムが無くなり基材であるポリカーボネートが
部分的に露出しているところがあることが判明した。ま
たサンシャインウェザーメーターを用いた促進耐候性試
験を行ったところ、比較例3については、照射600時
間未満で、熱可塑性樹脂に覆われていないと思われる箇
所で、基材のポリカーボネートが黄変しているのが観察
された。実施例2については、1000時間以上照射し
ても何等以上は認められなかった。
(Comparative Example 3) For a composite sheet obtained by heat-sealing a thermoplastic resin film under the same conditions as in Example 2, 50 parts by weight of an ester compound was added to 100 parts by weight of a solid content of an ultraviolet-crosslinking compound. Spray paint the contained paint,
The coating film was cross-linked by UV energy. The gloss, parallel light transmittance, and Rmax of this molded body are 55 each.
%, 70%, and 40 μm, a good embossed pattern was obtained in appearance, but it was found by cross-sectional observation with a microscope that the thermoplastic resin film disappeared and the polycarbonate as a base material was partially exposed. . Further, when an accelerated weather resistance test was conducted using a sunshine weather meter, in Comparative Example 3, the polycarbonate of the base material turned yellow in a portion which was considered not to be covered with the thermoplastic resin in less than 600 hours of irradiation. Was observed. Regarding Example 2, even after irradiation for 1000 hours or longer, nothing was observed.

【0039】これらの結果を表1に示す。The results are shown in Table 1.

【表1】 [Table 1]

【0040】[0040]

【発明の効果】本発明の方法によれば、基材中に添加剤
を入れておくとか、エンボスロールで凹凸をつけると
か、エンボス模様の鋳型で鋳込む等の基材自体に手間の
かかる工程を経ることなく、又単に有機、無機フィラー
を含んだ塗料を吹付け塗装する耐候性、耐擦傷性、耐薬
品性の劣った塗膜とすることなく、有機熱可塑性透明皮
膜を融着させた上で、各種の目的の形に成形でき、その
後フィラーのない塗料をスプレイするだけで、エンボス
模様を有する成形体が得られ、生産性が極めて良好であ
る。表面が架橋性塗膜で覆われているので、汚れがつき
難く、又清拭も容易である。熱可塑性樹脂フィルムに紫
外線吸収剤を配合すれば、基材がポリカーボネートの様
に変色性でも、耐光性が改良される。全体としての透光
性を確保して、しかも表面ギラツキを抑えると共に視認
性を抑えプライバシーを保護できる。耐擦傷性、耐薬品
性が良好なので、キズがついたり、薬品におかされたり
することがない。
EFFECTS OF THE INVENTION According to the method of the present invention, a step which is troublesome for the base material itself, such as putting an additive in the base material, making unevenness with an embossing roll, or casting with a mold having an embossed pattern. The organic thermoplastic transparent film was fused without undergoing the above, or simply by spray-painting a paint containing an organic or inorganic filler, without forming a film with poor weather resistance, scratch resistance, and chemical resistance. In the above, it can be molded into various desired shapes, and thereafter by simply spraying a paint having no filler, a molded product having an embossed pattern can be obtained, and the productivity is extremely good. Since the surface is covered with a crosslinkable coating film, it is hard to get stains and easy to wipe. When a thermoplastic resin film is blended with an ultraviolet absorber, the light resistance is improved even when the substrate is discolored like polycarbonate. As a whole, the transparency can be secured, the surface glare can be suppressed, the visibility can be suppressed, and the privacy can be protected. Since it has good scratch resistance and chemical resistance, it will not be scratched or exposed to chemicals.

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

【図1】図1は本発明の方法で製造したエンボス模様透
光板の断面図を示す。
FIG. 1 shows a cross-sectional view of an embossed pattern translucent plate manufactured by the method of the present invention.

【符号の説明】[Explanation of symbols]

1 透光性基材 2 透明熱可塑性樹脂フィルム 3 架橋性化合物を含有する有機溶剤塗料の塗膜 1 Transparent substrate 2 Transparent thermoplastic resin film 3 Coating film of organic solvent paint containing crosslinkable compound

Claims (7)

【特許請求の範囲】[Claims] 【請求項1】 透光性シートの少なくとも一方の面に透
明性熱可塑性樹脂フィルムを熱融着した積層複合体に対
して架橋性化合物を含有する有機溶剤塗料をスプレイ塗
装し、表面に凹凸形状を生じさせたあと、該有機溶剤塗
料を硬化させることを特徴とする表面にエンボス模様を
有する耐擦傷性透光性成形品の製造方法。
1. A laminated composite in which a transparent thermoplastic resin film is heat-sealed on at least one surface of a translucent sheet is spray-coated with an organic solvent paint containing a crosslinkable compound, and the surface is uneven. A method for producing a scratch-resistant translucent molded article having an embossed pattern on its surface, characterized in that the organic solvent coating composition is cured.
【請求項2】 透光性シートが熱可塑性樹脂であり、透
明性熱可塑性樹脂フィルムを熱融着させた後、任意形状
に成形し、成形物に架橋性化合物を含有する有機溶剤塗
料をスプレイ塗装する請求項1記載の表面にエンボス模
様を有する耐擦傷性透光性成形品の製造方法。
2. The transparent sheet is a thermoplastic resin, and after the transparent thermoplastic resin film is heat-sealed, the transparent sheet is molded into an arbitrary shape, and the molded product is sprayed with an organic solvent paint containing a crosslinkable compound. The method for producing a scratch-resistant translucent molded article having an embossed pattern on the surface according to claim 1, which is coated.
【請求項3】 透光性シートがポリカーボネート樹脂で
ある請求項1又は2記載の表面にエンボス模様を有する
耐擦傷性透光性成形品の製造方法。
3. The method for producing a scratch-resistant translucent molded article having an embossed pattern on the surface according to claim 1, wherein the translucent sheet is a polycarbonate resin.
【請求項4】 透明性熱可塑性樹脂フィルムを熱融着さ
せる際の張力が5〜15kgf/mの範囲である請求項
1,2,3のいずれかに記載の表面にエンボス模様を有
する耐擦傷性透光性成形品の製造方法。
4. The scratch resistance having an embossed pattern on the surface according to claim 1, wherein the tension when heat-sealing the transparent thermoplastic resin film is in the range of 5 to 15 kgf / m. Of producing a transparent light-transmissive molded article.
【請求項5】 透明性熱可塑性樹脂フィルムが紫外線吸
収剤を含有するアクリル系樹脂フィルムである請求項
1,2,3,4のいずれかに記載の表面にエンボス模様
を有する耐擦傷性透光性成形品の製造方法。
5. The scratch-resistant, transparent light-transmitting film having an embossed pattern on the surface according to claim 1, wherein the transparent thermoplastic resin film is an acrylic resin film containing an ultraviolet absorber. For producing flexible molded articles.
【請求項6】 架橋性化合物を含有する有機溶剤塗料
が、電離放射線架橋硬化型化合物を主成分とする請求項
1,2,3,4,5のいずれかに記載の表面にエンボス
模様を有する耐擦傷性透光性成形品の製造方法。
6. An organic solvent paint containing a crosslinkable compound, which has an ionizing radiation crosslinkable curable compound as a main component, has an embossed pattern on the surface of any one of claims 1, 2, 3, 4, and 5. A method for producing a scratch-resistant translucent molded article.
【請求項7】 架橋性化合物を含有する有機溶剤塗料中
に、架橋性化合物100重量部に対して、エステル系化
合物を10重量部以上、40重量部以下添加した請求項
1,2,3,4,5,6のいずれかに記載の表面にエン
ボス模様を有する耐擦傷性透光性成形品の製造方法。
7. An organic solvent paint containing a crosslinkable compound, wherein 10 parts by weight or more and 40 parts by weight or less of an ester compound is added to 100 parts by weight of the crosslinking compound. 4. A method for producing a scratch-resistant translucent molded article having an embossed pattern on the surface according to any one of 4, 5, and 6.
JP5045489A 1993-03-05 1993-03-05 Production of scratch-resistant light permeable molded product having embossed patterns on its surface Withdrawn JPH06254485A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5045489A JPH06254485A (en) 1993-03-05 1993-03-05 Production of scratch-resistant light permeable molded product having embossed patterns on its surface

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5045489A JPH06254485A (en) 1993-03-05 1993-03-05 Production of scratch-resistant light permeable molded product having embossed patterns on its surface

Publications (1)

Publication Number Publication Date
JPH06254485A true JPH06254485A (en) 1994-09-13

Family

ID=12720822

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5045489A Withdrawn JPH06254485A (en) 1993-03-05 1993-03-05 Production of scratch-resistant light permeable molded product having embossed patterns on its surface

Country Status (1)

Country Link
JP (1) JPH06254485A (en)

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