JPH09302272A - Powder coating material for forming uneven pattern, its production, and coated article - Google Patents
Powder coating material for forming uneven pattern, its production, and coated articleInfo
- Publication number
- JPH09302272A JPH09302272A JP8123826A JP12382696A JPH09302272A JP H09302272 A JPH09302272 A JP H09302272A JP 8123826 A JP8123826 A JP 8123826A JP 12382696 A JP12382696 A JP 12382696A JP H09302272 A JPH09302272 A JP H09302272A
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- Prior art keywords
- resin
- component
- powder coating
- coating film
- pattern
- 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.)
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Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明はソフトで意匠性の高
いサテン調の凹凸模様を形成する粉体塗料、その製造方
法および塗装物に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a powder coating material for forming a satin-like uneven pattern having a soft and high design property, a method for producing the same, and a coated article.
【0002】[0002]
【従来の技術】近年、粉体塗料の用途開発が進歩する中
で被塗物への装飾表現の多様化に伴い、意匠性を有する
粉体塗料に対する要求が高まっている。このような状況
の中で、素材の基調を変化させる、例えばマット調、ビ
ロード調、スエード調、ハンマートーン仕上げ等の凹凸
模様を形成させて意匠性を付与する粉体塗料が提供され
ている。このような凹凸模様を形成させる方法として
は、例えばシリコン化合物等の添加剤を利用することに
より、塗膜表面に独特のハジキ状凹凸模様を形成し意匠
性を付与できる。2. Description of the Related Art In recent years, as application development of powder coating materials has progressed, there has been an increasing demand for powder coating materials having a design property with the diversification of decorative expressions on objects to be coated. Under such circumstances, there is provided a powder coating material that changes the basic tone of the material, for example, forms an uneven pattern such as a matte tone, a velvet tone, a suede tone, and a hammer tone finish to impart design characteristics. As a method of forming such a concavo-convex pattern, for example, by using an additive such as a silicon compound, a unique cissing-like concavo-convex pattern is formed on the surface of the coating film, and the designability can be imparted.
【0003】また別方法としては、粉体塗料中に特性の
異なる樹脂を混合することにより凹凸模様を形成させる
方法が挙げられる。例えば、特公昭48−7686号に
は平均粒径が200メッシュ以下で、かつ100〜25
0℃における溶融粘度が100ポイズ以下の常温で固体
の樹脂粉末と、平均粒径が60メッシュ以上200メッ
シュ未満で、かつ100〜250℃における溶融粘度が
100ポイズ以下の常温で固体の樹脂粉末との混合した
凹凸模様を特徴とする粉体塗料が開示されている。しか
しこの粉体塗料によって形成される塗膜は凹凸が浅く、
オレンジピール(ORANGE PEEL)状となり意
匠性に乏しい。また、この方法では塗装条件や回収粉利
用時において、得られる塗膜の表現模様が変化する欠点
を有している。Another method is to form a concavo-convex pattern by mixing resins having different characteristics into powder coating. For example, JP-B-48-7686 has an average particle size of 200 mesh or less and 100 to 25.
A resin powder that has a melt viscosity at 0 ° C. of 100 poise or less and is solid at room temperature, and a resin powder that has an average particle size of 60 mesh or more and less than 200 mesh and that has a melt viscosity at 100 to 250 ° C. of 100 poise or less and is solid at room temperature. There is disclosed a powder coating material characterized by a mixed uneven pattern. However, the coating film formed by this powder coating has shallow irregularities,
It becomes orange peel (ORANGE PEEL) and has poor design. Further, this method has a defect that the expression pattern of the obtained coating film changes depending on the coating conditions and the use of recovered powder.
【0004】さらに別の方法としては、特定の樹脂を粉
体塗料の主体樹脂に分散して塗料化する方法が既に知ら
れている。例えば特開昭60−258270号には、常
温で固体の熱硬化性樹脂と熱可塑性セルロースエーテル
系樹脂粉末とを含有する混合物を、熱硬化性樹脂は溶融
するが熱可塑性セルロースエーテル系樹脂は溶解しない
温度で混練し、冷却後微粉砕化した粉体塗料が開示され
ている。しかし、この粉体塗料では熱硬化性樹脂と熱可
塑性セルロースエーテル系樹脂とを同一温度で混練する
ため、熱可塑性セルロースエーテル系樹脂の充分な分散
が得られず、このために塗膜の凹凸模様の均一性が得ら
れないばかりでなく、塗膜の一部は素地にまで達する現
象を起こし、耐食性に欠ける問題点を有していた。As another method, a method in which a specific resin is dispersed in a main resin of a powder coating material to form a coating material is already known. For example, JP-A-60-258270 discloses a mixture containing a thermosetting resin which is solid at room temperature and a thermoplastic cellulose ether resin powder, in which the thermosetting resin melts but the thermoplastic cellulose ether resin dissolves. There is disclosed a powder coating material which is kneaded at a temperature not controlled, cooled and then finely pulverized. However, in this powder coating, since the thermosetting resin and the thermoplastic cellulose ether resin are kneaded at the same temperature, it is not possible to obtain a sufficient dispersion of the thermoplastic cellulose ether resin. In addition to the lack of uniformity, the coating film had a problem that it had a phenomenon of reaching the base material and lacked in corrosion resistance.
【0005】[0005]
【発明が解決しようとする課題】これらの各種方法によ
る意匠性塗膜は、被塗物表面に連続した不規則な凹凸模
様の形成による意匠性表現に限られており、異なるトー
ンの模様は得られていない。ところが、OA機器、計測
機器などを中心にデザイン指向が高まり、ソフトな潤い
のある意匠性の高い塗膜が求められている。The designable coating film obtained by these various methods is limited to the expression of designability by forming a continuous irregular asperity pattern on the surface of the object to be coated, and a pattern of different tones can be obtained. Has not been done. However, there is a demand for a soft, highly moisturized coating film having a high design, centering on OA equipment and measuring equipment.
【0006】本発明の目的は、このような要望に応える
ため、均一かつ緻密で微細な丸みを帯びた突起状の模様
で表現されるソフトで意匠性の高いサテン調の凹凸模様
を形成できる凹凸模様形成性粉体塗料、およびその効率
的な製造方法ならびにそれによって形成される塗装物を
提供することである。In order to meet such a demand, an object of the present invention is to form a satin-like uneven pattern having a soft and high design, which is represented by a uniform, precise, and minute rounded projecting pattern. It is an object of the present invention to provide a pattern-forming powder coating material, an efficient manufacturing method thereof, and a coated article formed by the method.
【0007】[0007]
【課題を解決するための手段】本発明は次の凹凸模様形
成性粉体塗料その製造方法および塗装物である。 (1)(A)常温で固体の熱硬化性樹脂を含む熱硬化性
粉体塗料成分60〜99.9重量%、および(B)平均
粒径が10〜200μm、かつ前記(A)成分の加熱硬
化温度において形状の安定な樹脂ビーズ0.1〜40重
量%を含有する凹凸模様形成性粉体塗料。 (2)樹脂ビーズがポリアミド樹脂、ポリオレフィン樹
脂、アクリル樹脂、エポキシ樹脂、ポリエステル樹脂、
ポリウレタン樹脂、およびメラミン樹脂、ならびにこれ
らを三次元架橋させた熱可塑性樹脂および熱硬化性樹脂
からなる樹脂ビーズの中から選ばれた少なくとも1種で
ある上記(1)記載の粉体塗料。 (3)(A)常温で固体の熱硬化性樹脂を含む熱硬化性
粉体塗料成分60〜99.9重量%、および(B)平均
粒径が10〜200μm、かつ前記(A)成分の加熱硬
化温度において形状の安定な樹脂ビーズ0.1〜40重
量%を、前記(A)成分中の樹脂成分が溶融する温度に
加熱して、(B)成分を(A)成分中に分散させること
を特徴とする凹凸模様形成性粉体塗料の製造方法。 (4)上記(1)または(2)記載の粉体塗料を被塗物
に塗布し、(A)成分の硬化塗膜が(B)成分の平均粒
径を上回らない膜厚となるように形成した塗装物。The present invention is the following method for producing a powdery coating material for forming an uneven pattern and its coated article. (1) (A) 60 to 99.9% by weight of a thermosetting powder coating material component containing a thermosetting resin that is solid at room temperature, and (B) an average particle size of 10 to 200 μm, and A concavo-convex pattern-forming powder coating material, which contains 0.1 to 40% by weight of resin beads whose shape is stable at a heating and curing temperature. (2) Resin beads are polyamide resin, polyolefin resin, acrylic resin, epoxy resin, polyester resin,
The powder coating according to (1) above, which is at least one selected from polyurethane resin, melamine resin, and resin beads composed of a thermoplastic resin and a thermosetting resin obtained by three-dimensionally crosslinking these resins. (3) (A) 60 to 99.9% by weight of a thermosetting powder coating material component containing a thermosetting resin that is solid at room temperature, and (B) an average particle size of 10 to 200 μm, and (A) 0.1 to 40% by weight of resin beads whose shape is stable at the heat curing temperature is heated to a temperature at which the resin component in the component (A) is melted to disperse the component (B) in the component (A). A method for producing a powder coating composition capable of forming an uneven pattern, which comprises: (4) The powder coating composition according to (1) or (2) is applied to an object to be coated so that the cured coating film of component (A) has a film thickness not exceeding the average particle size of component (B). Formed coated object.
【0008】本発明の凹凸模様形成性粉体塗料は、
(A)成分としての熱硬化性粉体塗料成分と、(B)成
分としての樹脂ビーズを含有するものである。上記
(A)成分の熱硬化性粉体塗料成分は、常温で固体の熱
硬化性樹脂および必要により添加された他の成分を含む
ものであり、従来より熱硬化性粉体塗料として用いられ
ていた成分がそのまま使用できる。The powder coating composition for forming uneven patterns of the present invention comprises
It contains a thermosetting powder coating component as the component (A) and resin beads as the component (B). The thermosetting powder coating material component (A) contains a thermosetting resin solid at room temperature and other components added as necessary, and has been conventionally used as a thermosetting powder coating material. The ingredients can be used as they are.
【0009】本発明の粉体塗料において、(A)成分に
用いられる常温で固体の熱硬化性樹脂としては特に制限
はないが、従来の熱硬化性粉体塗料に塗膜形成成分とし
て使用されている自己架橋型、硬化剤既含有型、硬化剤
後添加型など、公知の熱硬化性樹脂が使用できる。この
ような熱硬化性樹脂の一般例としては、例えば主剤とし
てエポキシ系、ポリエステル系、アクリル系、フッ素系
などの常温で固体の熱硬化性樹脂などが好適に用いら
れ、また硬化剤としてメラミン、ブロックイソシアネー
ト、多塩基酸・アミド、グリシジル化合物、それらの重
合体などを使用することができる。In the powder coating material of the present invention, the thermosetting resin which is solid at room temperature and is used as the component (A) is not particularly limited, but it is used as a coating film forming component in the conventional thermosetting powder coating material. Known thermosetting resins such as a self-crosslinking type, a curing agent-containing type, and a curing agent post-addition type can be used. As a general example of such a thermosetting resin, for example, epoxy-based, polyester-based, acrylic-based, fluorine-based, etc. solid thermosetting resins that are solid at room temperature are preferably used as the main agent, and melamine as a curing agent, Blocked isocyanates, polybasic acid / amides, glycidyl compounds, polymers thereof and the like can be used.
【0010】(A)成分には、他の成分として必要に応
じて熱硬化性樹脂100重量部に対して0.01〜10
0重量部の範囲で顔料を加えることができる。顔料とし
ては二酸化チタン、カーボンブラック、酸化鉄等の無機
顔料、タルク、沈降性硫酸バリウム、シリカ、炭酸カル
シウム等の体質顔料、シアニンブルーアゾ顔料等の有機
顔料などを使用できる。また従来の粉末塗料と同様に他
の成分として硬化促進剤、レベリング剤、消泡剤、酸化
防止剤、紫外線吸収剤等の改質剤、および他の添加剤を
熱硬化性樹脂100重量部に対して0.01〜30重量
部の範囲で添加することができる。The component (A) may be added as other components in an amount of 0.01 to 10 relative to 100 parts by weight of the thermosetting resin.
The pigment can be added in the range of 0 parts by weight. As the pigment, inorganic pigments such as titanium dioxide, carbon black and iron oxide, extender pigments such as talc, precipitated barium sulfate, silica and calcium carbonate, and organic pigments such as cyanine blue azo pigment can be used. Further, as in the conventional powder paint, other components such as a curing accelerator, a leveling agent, a defoaming agent, an antioxidant, a modifier such as an ultraviolet absorber, and other additives are added to 100 parts by weight of the thermosetting resin. On the other hand, it can be added in the range of 0.01 to 30 parts by weight.
【0011】本発明の(B)成分として用いられる樹脂
ビーズは、平均粒径が10〜200μmの範囲内にあ
り、かつ上記(A)成分の加熱硬化温度において形状の
安定な高分子化合物からなる球体である。樹脂ビーズの
形状としては、真球状体が好ましいが、若干形が崩れた
疑似球状体であってもよい。柱状体、針状体あるいは不
定形体などは、塗料製造時における分散性が低下した
り、目的とするサテン調模様を損なうので好ましくな
い。The resin beads used as the component (B) of the present invention have an average particle size in the range of 10 to 200 μm and are composed of a polymer compound having a stable shape at the heat curing temperature of the component (A). It is a sphere. The shape of the resin beads is preferably a true spherical body, but may be a pseudo spherical body having a slightly deformed shape. A columnar body, a needle-shaped body, an amorphous body, or the like is not preferable because the dispersibility during the production of a coating material is reduced and the desired satin pattern is impaired.
【0012】樹脂ビーズは、(A)成分の熱硬化樹脂と
親和性ないし相容性を有する樹脂からなるものが好まし
い。また加熱時における熱変形を防止する観点から、三
次元架橋構造を有する熱可塑性樹脂または熱硬化性樹脂
が望ましいが、(A)成分の加熱硬化温度において形状
が安定であれば非架橋性の高分子化合物であってもよ
い。さらに前記樹脂ビーズは各種反応性官能基を含有し
ていてもよいが、前記(A)成分の反応性官能基に対し
て不活性であることが望ましい。The resin beads are preferably made of a resin having compatibility or compatibility with the thermosetting resin as the component (A). Further, from the viewpoint of preventing thermal deformation during heating, a thermoplastic resin or a thermosetting resin having a three-dimensional crosslinked structure is desirable, but if the shape is stable at the heat curing temperature of the component (A), it is highly non-crosslinkable. It may be a molecular compound. Further, the resin beads may contain various reactive functional groups, but it is preferable that the resin beads are inactive with respect to the reactive functional groups of the component (A).
【0013】これら樹脂ビーズは、前記平均粒径および
前記形状を有するものであればその樹脂組成や合成経路
等に特に制限はなく、ナイロン、ポリオレフィン、アク
リル樹脂、エポキシ樹脂、ポリエステル樹脂、ウレタン
樹脂、メラミン樹脂、これらを三次元架橋させた熱可塑
性樹脂または熱硬化性樹脂等の高分子化合物を好適に使
用できる。さらに樹脂ビーズは、所望とする模様調に応
じて、有機顔料および/または無機顔料を含有する有色
ビーズを使用することもできる。These resin beads are not particularly limited in their resin composition, synthetic route, etc. as long as they have the above-mentioned average particle diameter and the above-mentioned shape, and nylon, polyolefin, acrylic resin, epoxy resin, polyester resin, urethane resin, Polymer compounds such as melamine resins, thermoplastic resins or three-dimensionally crosslinked thermoplastic resins or thermosetting resins can be preferably used. Further, as the resin beads, colored beads containing an organic pigment and / or an inorganic pigment can be used depending on the desired pattern tone.
【0014】これら樹脂ビーズの製造方法としては、例
えばアクリル樹脂の場合、α,β−不飽和モノマーと多
官能性不飽和モノマーを乳化重合することにより製造で
きる。またエポキシ樹脂等の樹脂ビーズは、溶液重合し
た後乳化時に架橋反応を行い、脱溶剤することにより製
造できる。その他の樹脂についても、それぞれの樹脂の
製造方法として公知の方法により製造することができ
る。As a method of producing these resin beads, for example, in the case of an acrylic resin, it can be produced by emulsion polymerization of an α, β-unsaturated monomer and a polyfunctional unsaturated monomer. Further, resin beads such as an epoxy resin can be produced by carrying out a solution polymerization, followed by a crosslinking reaction at the time of emulsification, and removing the solvent. Other resins can also be manufactured by known methods for manufacturing the respective resins.
【0015】樹脂ビーズとしては市販品も使用できる。
市販されている樹脂ビーズの代表的なものとして、例え
ばポリアミド樹脂(ナイロン)としてはオルガソールパ
ウダー(商品名:日本リルサン株式会社)、ダイアミド
(商品名:ダイセルヒュルス株式会社)等、ポリオレフ
ィンではミペロンXM(商品名:三井石油化学工業株式
会社)等を挙げることができる。さらにアクリル樹脂の
例としては、ジュリマーMB(商品名:日本純薬株式会
社)、タフチックAR(商品名:東洋紡績株式会社)、
ラブコロール(商品名:大日精化工業株式会社)、テク
ポリマーMBX、テクポリマーSBX、テクポリマーS
ME(商品名:積水化成品工業株式会社)、ファインパ
ールPB、ファインパールPM(商品名:住友化学工業
株式会社)、SPGタイプ、SPタイプ(商品名:綜研
化学株式会社)等の熱可塑性樹脂ビーズが挙げられる。
また、ポリエステル樹脂としてはバリナックスFC(商
品名:三井東圧化学株式会社)、ウレタン樹脂ではバー
ノックスCFB(商品名:大日本インキ化学工業株式会
社)、ウレタンビーズ(積水化成品工業株式会社製
品)、デコシルク(商品名:境商事株式会社)等、メラ
ミン樹脂ではエポスターL(商品名:日本触媒株式会
社)、ベルパールR、ベルパールH、ベルパールC(商
品名:鐘紡株式会社)やユニベックス−C、ユニベック
ス−WA−C、GCPシリーズ(商品名:ユニチカ株式
会社)等の熱硬化性樹脂ビーズを挙げることができる。Commercially available products can also be used as the resin beads.
Typical examples of commercially available resin beads include, for example, polyamide resin (nylon) such as Olgasol powder (trade name: Nippon Rilsan Co., Ltd.), Daiamide (trade name: Daicel Huls Co., Ltd.), and polyolefins such as miperone. XM (trade name: Mitsui Petrochemical Industry Co., Ltd.) and the like can be mentioned. Furthermore, examples of the acrylic resin include Julimer MB (trade name: Nippon Pure Chemicals Co., Ltd.), Tough AR (trade name: Toyobo Co., Ltd.),
Love Koror (trade name: Dainichi Seika Kogyo Co., Ltd.), Techpolymer MBX, Techpolymer SBX, Techpolymer S
Thermoplastic resins such as ME (trade name: Sekisui Plastics Co., Ltd.), Fine Pearl PB, Fine Pearl PM (trade name: Sumitomo Chemical Co., Ltd.), SPG type, SP type (trade name: Soken Chemical Co., Ltd.) Examples include beads.
Also, as the polyester resin, Varinax FC (trade name: Mitsui Toatsu Chemical Co., Ltd.), and as the urethane resin, Vernox CFB (trade name: Dainippon Ink and Chemicals Co., Ltd.), urethane beads (Sekisui Plastics Co., Ltd. product ), Decosilk (trade name: Sakai Shoji Co., Ltd.), and melamine resin, Eposter L (trade name: Nippon Shokubai Co., Ltd.), Bell Pearl R, Bell Pearl H, Bell Pearl C (trade name: Kanebo Co., Ltd.) and Univex-C, The thermosetting resin beads such as Univex-WA-C and GCP series (trade name: Unitika Ltd.) can be mentioned.
【0016】これら上記樹脂ビーズの使用に関しては、
有色・無色問わず所望とする模様調に応じて、任意の種
類のものを1種類のみ用いてもよいし、2種類以上を組
み合わせて用いてもよい。Regarding the use of these resin beads,
Only one type of arbitrary type may be used, or two or more types may be used in combination, depending on the desired pattern tone regardless of whether it is colored or colorless.
【0017】(B)成分として用いられる樹脂ビーズの
平均粒径は、10〜200μmの範囲内であればよい
が、30〜150μmの範囲内にあることが好ましい。
ここで平均粒径が200μmを越えると得られる模様は
粗雑になり、得られる模様の均一性や意匠性を損なうば
かりでなく塗膜の物性低下を生じる。また平均粒径が1
0μm未満であると塗膜上への模様形成は困難となり、
また艶消し作用を生じる場合もあり好ましくない。The average particle size of the resin beads used as the component (B) may be in the range of 10 to 200 μm, but is preferably in the range of 30 to 150 μm.
Here, if the average particle size exceeds 200 μm, the obtained pattern becomes rough and not only the uniformity and design of the obtained pattern are impaired but also the physical properties of the coating film deteriorate. The average particle size is 1
If it is less than 0 μm, it becomes difficult to form a pattern on the coating film,
In addition, a matting effect may occur, which is not preferable.
【0018】樹脂ビーズの粒径は所望とする模様調によ
り適当な粒径のものを選択し1種のみ用いてもよいし、
あるいは2種以上を組み合わせて使用してもよい。例え
ば、平均粒径が50μm未満の樹脂ビーズのみを用いた
場合、一般に得られるサテン調模様は浅くなる傾向を示
すが、平均粒径が50μm未満のビーズと平均粒径が5
0〜200μmの樹脂ビーズを併用することにより、良
好なサテン調模様が得られる。The particle size of the resin beads may be selected from those having an appropriate particle size depending on the desired pattern tone, and only one kind may be used.
Alternatively, two or more kinds may be used in combination. For example, when only resin beads having an average particle size of less than 50 μm are used, a satin pattern generally obtained tends to be shallow, but beads having an average particle size of less than 50 μm and an average particle size of 5 are used.
A good satin pattern can be obtained by using resin beads of 0 to 200 μm in combination.
【0019】本発明の凹凸模様形成性粉体塗料は、前記
熱硬化性樹脂および必要に応じて添加される顔料、改質
剤その他の添加剤を含む(A)成分の熱硬化性粉体塗料
成分を60〜99.9重量%、好ましくは70〜95重
量%、(B)成分の樹脂ビーズを0.1〜40重量%、
好ましくは5〜30重量%含有する粉体塗料である。樹
脂ビーズの配合量が40重量%を越えてもサテン調の模
様は得られるが、加工性および耐食性に対する塗膜の物
性低下が生じ、また0.1重量%未満では模様の均一性
に乏しい塗膜となる。The uneven pattern-forming powder coating material of the present invention is a thermosetting powder coating material of component (A) containing the above-mentioned thermosetting resin and pigments, modifiers and other additives optionally added. 60 to 99.9% by weight of the component, preferably 70 to 95% by weight, 0.1 to 40% by weight of the resin beads of the component (B),
It is preferably a powder coating material containing 5 to 30% by weight. A satin-like pattern can be obtained even if the content of the resin beads exceeds 40% by weight, but the physical properties of the coating film are deteriorated with respect to processability and corrosion resistance, and if it is less than 0.1% by weight, the coating has poor uniformity. It becomes a film.
【0020】本発明の粉体塗料は(A)成分の粉体塗料
成分中に(B)成分の樹脂ビーズが均一に分散している
のが望ましい。この場合樹脂ビーズは球状の形状を維持
したまま(A)成分中に均一に分散している必要があ
る。保存、運搬、塗装作業中に(A)、(B)成分が分
離しないためには両成分が溶融一体化した状態にあるこ
とが重要である。In the powder coating material of the present invention, it is desirable that the resin beads of the component (B) are uniformly dispersed in the powder coating component of the component (A). In this case, the resin beads need to be uniformly dispersed in the component (A) while maintaining the spherical shape. In order to prevent the components (A) and (B) from separating during storage, transportation, and painting operations, it is important that both components are in a melted and integrated state.
【0021】本発明の凹凸模様形成性粉体塗料の製造方
法は、(A)、(B)両成分を(A)成分中の樹脂成分
が溶融する温度に加熱して、(B)成分を(A)成分中
に分散させる方法である。この場合(A)成分中の樹脂
成分が溶融する温度において、(B)成分の樹脂成分が
球形状を維持するように、(B)成分の軟化温度が
(A)成分中の樹脂成分の溶融温度より高くされている
必要がある。In the method for producing a powder coating composition for forming a concavo-convex pattern according to the present invention, both components (A) and (B) are heated to a temperature at which the resin component in component (A) is melted, and component (B) is added. This is a method of dispersing it in the component (A). In this case, the softening temperature of the component (B) melts the resin component in the component (A) so that the resin component of the component (B) maintains the spherical shape at the temperature at which the resin component in the component (A) melts. Must be above temperature.
【0022】上記の製造方法では、粉体塗料の製造時に
前記(A)、(B)の成分を(A)成分中の樹脂成分が
溶融する温度で同時に混練し、溶融した粉体塗料中に樹
脂ビーズを分散させることができる。これは特別な方法
ではなく、通常の粉体塗料製造に準じて混練を行い、樹
脂ビーズを分散させることができる。In the above-mentioned manufacturing method, the components (A) and (B) are simultaneously kneaded at the temperature at which the resin component in the component (A) is melted during the production of the powder coating material, and the powder coating material thus melted is mixed. The resin beads can be dispersed. This is not a special method, and the resin beads can be dispersed by kneading in accordance with the usual powder coating production.
【0023】粉体塗料の製造は具体的には、(A)成分
である熱硬化性樹脂主剤、顔料および添加剤等の混合物
中に(B)成分を所定量添加してドライブレンダーで混
合した後、押出混練機、一軸または二軸エクストルーダ
ー等を用いて(A)成分中の樹脂成分の溶融する温度範
囲、通常80〜120℃で、溶融混練を行い、ペレット
状とした後冷却する。これを衝撃粉砕機、気流式粉砕機
等により微粉砕し、分級することにより粉体塗料を製造
する。(B)成分の樹脂ビーズは加熱により変形しない
とともに、粉砕に際しても粉砕されない強度を有するこ
とが必要である。Specifically, the powder coating material is manufactured by adding a predetermined amount of the component (B) to a mixture of the thermosetting resin main component, the pigment and the additive which is the component (A), and mixing them with a dry blender. Then, using an extrusion kneader, a single-screw or twin-screw extruder, and the like, melt-kneading is performed in a temperature range in which the resin component in the component (A) is melted, usually 80 to 120 ° C., and pelletized and then cooled. This is finely pulverized by an impact pulverizer, an air flow type pulverizer or the like, and classified to produce a powder coating material. The resin beads as the component (B) are required to have such strength that they are not deformed by heating and that they are not crushed when crushed.
【0024】ここで(B)成分を(A)成分中に分散す
ることなく、(A)成分溶融混練後の粉砕時、あるいは
分級時に(B)成分を添加して分散させると、粉体塗料
中における(B)成分の含有量が製造ロット間で不安定
となるばかりでなく、塗装時における塗着効率の変化に
より模様の均一性を損ない、さらに回収粉利用の際に模
様調の変化を生じたり、また形成模様の不均一化により
加工性や耐食性等塗膜の物性低下を生じる原因となり、
好ましくない。If the component (B) is not dispersed in the component (A) and the component (B) is added and dispersed at the time of pulverization after the melt kneading of the component (A) or at the time of classification, the powder coating composition is obtained. Not only the content of component (B) in the product becomes unstable between production lots, but also the uniformity of the pattern is impaired due to the change in the coating efficiency during coating, and the pattern tone changes when the recovered powder is used. May cause the deterioration of the physical properties of the coating film such as workability and corrosion resistance due to non-uniformity of the formed pattern,
Not preferred.
【0025】本発明の凹凸模様形成性粉体塗料を用いた
塗装方法は、上記粉体塗料を静電吹付法、流動浸積法ま
たは静電流動浸積法など通常の粉体塗料における塗装方
法により被塗物に塗布し、その後加熱溶融させて硬化さ
せることにより、ソフトで意匠性の高いサテン調の凹凸
模様を有する塗膜を形成し、塗装物を得る。この場合、
(A)成分によって形成される硬化塗膜が(B)成分の
樹脂ビーズの平均粒径を上回らない膜厚となるように、
粉体塗料の配合および塗布量を選択する。前記塗装仕上
げ方法の中では特に静電吹付法が好ましい。The coating method using the irregularity pattern-forming powder coating material of the present invention is a conventional coating method for powder coating material such as electrostatic spraying method, fluidized bed immersion method or electrostatic fluidized bed coating method. By applying to an object to be coated with the above, and then heating and melting to cure, a coating film having a satin-like uneven pattern having a soft and high design is formed to obtain a coated object. in this case,
In order for the cured coating film formed by the component (A) to have a film thickness that does not exceed the average particle size of the resin beads of the component (B),
Select the powder coating composition and coating amount. Of the coating finishing methods, the electrostatic spraying method is particularly preferable.
【0026】被塗物としては塗膜形成時における加熱条
件に耐え得るものであれば、材質および形状は特に制限
はなく、任意の被塗物に塗装を行うことができる。この
ような被塗物の材質としては、例えば、0.2〜2mm
厚程度の鋼板、亜鉛メッキ鋼板、アルミニウム板、ステ
ンレス鋼板等の金属板、ガラス、セラミック、それらの
成形品などを挙げることができる。The material and shape of the article to be coated are not particularly limited as long as it can withstand the heating conditions at the time of forming the coating film, and any article can be coated. As a material of such an object to be coated, for example, 0.2 to 2 mm
Examples include thick steel plates, galvanized steel plates, aluminum plates, metal plates such as stainless steel plates, glass, ceramics, and molded products thereof.
【0027】上記のような被塗物へ粉体塗料を塗装する
には、被塗物へ市販の静電塗装機(荷電圧:−50〜−
90kV)やその他粉体塗装法により均一に塗装した
後、熱風焼付炉、赤外炉、誘導加熱炉等で加熱溶融し硬
化させて塗膜を形成する。加熱硬化の条件としては、前
記(A)成分の熱硬化性粉体塗料の種類や塗料の配合組
成にもよるが、通常、被塗物の温度が150〜280℃
で1〜30分間、好ましくは170℃〜250℃で3〜
20分間が適当である。In order to apply the powder coating material to the above-mentioned object to be coated, a commercially available electrostatic coating machine (load voltage: -50 to-) is applied to the object to be coated.
(90 kV) or other powder coating method, and then uniformly heated and melted in a hot-air baking furnace, an infrared furnace, an induction heating furnace or the like to be cured to form a coating film. The conditions for heat curing depend on the type of the thermosetting powder coating composition (A) and the composition of the coating composition, but the temperature of the article to be coated is usually 150 to 280 ° C.
For 1 to 30 minutes, preferably 170 to 250 ° C. for 3 to
Twenty minutes is suitable.
【0028】塗装膜厚としては通常、平均膜厚で30〜
150μm、好ましくは50〜80μmに塗布すること
が適当である。この際、使用する(B)成分の平均粒径
を上回らない膜厚に調整すると、均一かつ緻密で微細な
丸みを帯びた突起を有する塗膜が形成され、ソフトで意
匠性の高いサテン調の凹凸模様が得られる。ここで平均
膜厚とは凸部、凹部を含めた全体の膜厚の平均値であ
り、被塗装物の面積と、塗装に使用した塗料の塗着重量
および塗料比重とから算術的に求めることができる。The coating film thickness is usually 30 to 30 on average.
It is suitable to apply it to 150 μm, preferably 50 to 80 μm. At this time, if the film thickness is adjusted so as not to exceed the average particle diameter of the component (B) used, a coating film having uniform, dense and fine rounded protrusions is formed, and it is soft and has a satin tone of high design. An uneven pattern is obtained. Here, the average film thickness is the average value of the entire film thickness including the convex and concave portions, and is calculated arithmetically from the area of the object to be coated, the coating weight of the coating used for coating, and the specific gravity of the coating. You can
【0029】上記により形成される凹凸模様について
「JIS B−0601(1994)表面粗さ一定義及
び表示」に準じた表面粗さとうねりのパラメータから模
様の範囲を限定すると、丸みを帯びた突起状の模様に起
因する上記の表面粗さとうねりのパラメータは、塗膜表
面上の任意に選ばれた5点以上の表面粗度測定点の全て
において下記表1の範囲内にあるのが望ましい。Regarding the uneven pattern formed as described above, if the range of the pattern is limited from the parameters of surface roughness and undulation according to "JIS B-0601 (1994) Definition and indication of surface roughness", the rounded protrusions are formed. The above parameters of surface roughness and waviness due to the pattern are preferably within the range of the following Table 1 at all 5 or more arbitrarily selected surface roughness measurement points on the coating film surface.
【0030】ここで中心線平均粗さRa、凹凸部の平均
間隔Sm、および局部的山頂の平均間隔Sは上記突起状
の模様の密度を、また十点平均粗さRzは模様の高さを
表現するもので、次の値である。 Ra:平均線からの絶対値偏差の平均値。 Rz:基準長さ毎の凸部の高い方から5点の絶対値の平
均値と、凹部の低い方から5点の絶対値の平均値との
和。 Sm:粗さ曲線が平均線と交差する交点から求めた凹凸
一周期の間隔の平均値。 S:隣合う局部凸部の間隔の平均値。Here, the center line average roughness Ra, the average spacing Sm of the uneven portions, and the average spacing S of the local peaks are the density of the above-mentioned projection-like pattern, and the ten-point average roughness Rz is the height of the pattern. It is expressed and has the following values. Ra: average value of absolute value deviation from the average line. Rz: The sum of the average value of the absolute values of 5 points from the highest convex portion and the average value of the absolute values of 5 points from the lowest concave portion for each reference length. Sm: The average value of the intervals of one cycle of unevenness obtained from the intersection where the roughness curve intersects the average line. S: Average value of the interval between adjacent local convex portions.
【0031】[0031]
【表1】 [Table 1]
【0032】上記により形成される塗膜は樹脂ビーズに
より均一かつ緻密で微細な丸みを帯びた突起状の模様が
形成されるため、ソフトで意匠性の高いサテン調の凹凸
模様が得られる。そして(A)成分の粉末塗料成分と
(B)成分の樹脂ビーズが溶着により一体化しているこ
とにより、化学性能、物理性能、特に加工性および耐食
性に優れた塗膜が得られる。凹凸模様の突起が丸みを帯
びているかどうかは肉眼により観察可能であるが、拡大
三次元断面図を作図することにより、視覚化することが
できる。The coating film formed as described above has a uniform, dense, finely rounded, projection-like pattern formed of resin beads, so that a satin-like uneven pattern having a soft and high design can be obtained. Since the powder coating component of component (A) and the resin beads of component (B) are integrated by welding, a coating film having excellent chemical performance, physical performance, particularly workability and corrosion resistance can be obtained. It is possible to visually observe whether or not the projections of the uneven pattern are rounded, but they can be visualized by drawing an enlarged three-dimensional sectional view.
【0033】(B)成分の樹脂ビーズの代りに破砕状な
いし不定形の樹脂粒状物を用いると、角ばった突起を有
する塗膜が形成され、冷たい感じで、肌ざわりの悪い塗
膜が形成され、角ばった部分から塗膜が剥離していくた
め、化学性能、物理性能なども劣る塗膜が得られる。When a crushed or amorphous resin granular material is used instead of the resin beads of the component (B), a coating film having angular projections is formed, and a coating film having a cold feeling and a bad texture is formed. Since the coating film peels off from the angular portion, a coating film with inferior chemical and physical properties can be obtained.
【0034】[0034]
【発明の実施の形態】以下、本発明の実施の形態を図面
により説明する。図1は(A)成分の粉体塗料成分と
(B)成分の樹脂ビーズからなる粉体塗料を塗布して凹
凸塗膜を形成した塗装物を拡大して示すもので、(a)
は斜視図、(b)は断面図である。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an enlarged view of a coated article in which a powder coating material composed of a powder coating material component (A) and resin beads of a component (B) is applied to form an uneven coating film.
Is a perspective view, and (b) is a sectional view.
【0035】図1において塗装物1は被塗装物2の表面
に凹凸塗膜3が形成されている。この凹凸塗膜3は
(A)成分によって形成される塗膜4中に、(B)成分
の樹脂ビーズ5が埋設されている。樹脂ビーズ5が存在
しない部分が凹部6として形成され、樹脂ビーズ5が突
出する部分が凸部7として形成されている。In FIG. 1, a coated article 1 has an uneven coating film 3 formed on the surface of a coated article 2. In this uneven coating film 3, resin beads 5 of component (B) are embedded in a coating film 4 formed of component (A). A portion where the resin beads 5 do not exist is formed as a concave portion 6, and a portion where the resin beads 5 project is formed as a convex portion 7.
【0036】この凹凸塗膜3は凸部7は球形の樹脂ビー
ズ5が突出し、かつ塗膜4が裾野状に連なるため、丸み
を帯びた凸部7が形成され、ソフトで意匠性の高いサテ
ン調の凹凸塗膜が得られる。In this uneven coating film 3, since the spherical resin beads 5 are projected on the convex portion 7 and the coating film 4 is continuous in a skirt shape, the rounded convex portion 7 is formed, and the satin is soft and has high designability. An uneven coating film having a tone is obtained.
【0037】図2(a)は比較例として図1の樹脂ビー
ズ5の代りに破砕状の樹脂粒状物8を用いた塗装物を拡
大して示す斜視図、(b)はその断面図である。図2で
は凸部7は破砕状の樹脂粒状物8により形成されるた
め、角ばった突起となり、ソフトな凹凸模様は得られ
ず、冷たい感じで肌ざわりの悪い塗膜が得られる。FIG. 2A is an enlarged perspective view showing a coated article using crushed resin particles 8 instead of the resin beads 5 of FIG. 1 as a comparative example, and FIG. 2B is a sectional view thereof. . In FIG. 2, since the convex portion 7 is formed by the crushed resin granular material 8, the convex portion 7 becomes an angular protrusion, a soft uneven pattern is not obtained, and a coating film having a cold feeling and a bad texture is obtained.
【0038】[0038]
【実施例】次に、本発明を実施例によりさらに具体的に
説明するが本発明はこれらの実施例によって何ら制限さ
れるものではない。EXAMPLES Next, the present invention will be described more specifically by way of examples, but the present invention is not limited to these examples.
【0039】各例中、塗膜性能等の物理性能は次のよう
にして求めた。 (1)鏡面光沢度 JIS K−5400(1990)7.6に準じて入射
角と受光角が60度の時の値を示した。 (2)鉛筆硬度 JIS K−5400(1990)8.4.2手かき法
に準じて行った。In each example, physical properties such as coating film performance were determined as follows. (1) Specular gloss The values when the incident angle and the light receiving angle are 60 degrees are shown according to JIS K-5400 (1990) 7.6. (2) Pencil hardness The pencil hardness was determined according to JIS K-5400 (1990) 84.2 Hand-shaking method.
【0040】(3)エリクセン値 JIS K−5400(1990)8.2.2破断距離
法に準じて行った。 (4)耐衝撃性 JIS K−5400(1990)8.3.2デュポン
式に準じて行った。 (5)耐屈曲性 JIS K−5400(1990)8.1に準じて行っ
た。(3) Erichsen value It was measured according to JIS K-5400 (1990) 8.2.2 Breaking distance method. (4) Impact resistance The impact resistance was measured according to JIS K-5400 (1990) 8.3.2 DuPont type. (5) Flex resistance It was performed according to JIS K-5400 (1990) 8.1.
【0041】(6)加工性試験 試験片に素材片を挟み、万力を用いて180度折曲試験
を行う。塗膜屈曲面におけるワレ等の塗膜欠陥を生じな
い素材片の数を示す。この場合、例えば2枚素材片を挟
んだ際の合格値を2Tと表現した。(6) Workability test A material piece is sandwiched between test pieces and a 180-degree bending test is performed using a vise. The number of material pieces that do not cause coating film defects such as cracks on the curved surface of the coating film is shown. In this case, for example, a passing value when two pieces of material are sandwiched is expressed as 2T.
【0042】(7)耐塩水噴霧性 JIS K−5400(1990)9.1に準じて、塗
膜表面にクロスカットを行った後300時間連続で試験
を行った。剥離試験はカット面上でテープ剥離を行い、
カット中心線から剥離した幅の最大値を示した。(7) Salt Water Spray Resistance According to JIS K-5400 (1990) 9.1, the surface of the coating film was cross-cut and then continuously tested for 300 hours. In the peel test, peel the tape on the cut surface,
The maximum value of the width peeled from the cut center line was shown.
【0043】(8)表面状態 肉眼観察により次の基準で判定した。 普通:凸部が独立した突起状模様を形成している状態。 やや緻密:部分的に凸部の重複により突起状模様を形成
している状態。 かなり緻密:大部分の凸部が重複し合うことにより突起
状模様を形成している状態。(8) Surface condition The condition was judged by the following criteria by visual observation. Normal: A state in which convex portions form independent protruding patterns. Slightly dense: A state in which a protruding pattern is formed by partially overlapping convex portions. Quite dense: A state in which most of the convex portions overlap to form a protruding pattern.
【0044】(9)表面粗度測定 JIS B−0601(1994)表面粗さ一定義およ
び表示に準じて表面粗さとうねりのパラメータを測定
し、模様調の範囲を数値表現した。 [振幅に関するパラメータ] Ra:中心線平均粗さ(μm),Rz:十点平均粗さ
(μm) [波長に関するパラメータ] Sm:凹凸の平均間隔(mm),S:局部的山頂の平均
間隔(mm)(9) Surface Roughness Measurement Surface roughness and undulation parameters were measured according to JIS B-0601 (1994) Definition of Surface Roughness and Display, and the range of pattern tone was expressed numerically. [Parameters related to amplitude] Ra: center line average roughness (μm), Rz: ten-point average roughness (μm) [Parameters related to wavelength] Sm: average interval of irregularities (mm), S: average interval of local peaks ( mm)
【0045】(10)三次元断面図 三次元断面図は、三次元表面粗さ形状測定装置(商品
名:(株)東京精密製品、サーフコム E−RC−XY
3B)を用いて、傾斜補正されていない塗膜表面の断面
曲線を縦倍率は100倍、横倍率、ならびに前後倍率は
50倍、ピッチは20μmで測定することにより作成し
た。(10) Three-dimensional cross-sectional view The three-dimensional cross-sectional view is a three-dimensional surface roughness profile measuring device (trade name: Tokyo Seimitsu Co., Ltd., Surfcom E-RC-XY).
3B), a cross-sectional curve of the surface of the coating film that was not tilt-corrected was prepared by measuring the longitudinal magnification at 100 times, the lateral magnification, and the front-back magnification at 50 times, and the pitch at 20 μm.
【0046】(11)模様調の評価 肉眼観察、三次元断面図および表面粗度測定結果から次
の基準により総合判定した。 良好:均一かつ緻密で微細な丸みを帯びた突起状の模様
を有する意匠性塗膜が形成されており、しかも突起状の
模様に起因するパラメータが前記表1の好ましい範囲内
にあること。 不良:上記以外。(11) Evaluation of pattern tone Overall judgment was made according to the following criteria from the results of visual observation, three-dimensional sectional view and surface roughness measurement. Good: A design coating film having a uniform, dense and fine rounded protrusion pattern was formed, and the parameter due to the protrusion pattern was within the preferable range in Table 1 above. Bad: Other than the above.
【0047】実施例1〜3 表2に示した実施例1〜3の構成成分を、ドライブレン
ダー(商品名:ヘンシェルミキサー、三井三池化工機株
式会社製)により約1分間均一に混合し、次に80〜1
00℃の温度条件で押出混練機(商品名:ブスコニーダ
ーPR−46,ブス社製)を用いて溶融混練を行い、冷
却後ハンマー式衝撃粉砕機で微粉砕したのち80メッシ
ュの金網で分級することにより粉体塗料を製造した。得
られた粉体塗料は、表3に示す塗装平均膜厚となるよう
に−80kv荷電で静電吹付法により所定の板厚の被塗
物に塗装を行った。次いで表3に示した焼付条件におい
て加熱硬化させた後、塗膜外観および塗膜物性について
評価を行った。結果を表3および図3〜5に示す。Examples 1 to 3 The components of Examples 1 to 3 shown in Table 2 were uniformly mixed for about 1 minute with a dry blender (trade name: Henschel Mixer, manufactured by Mitsui Miike Kakoki Co., Ltd.), and then 80 to 1
Melt-kneading is performed using an extrusion kneader (trade name: Busco Kneader PR-46, manufactured by Buss Co., Ltd.) under a temperature condition of 00 ° C., and after cooling, finely pulverized by a hammer-type impact pulverizer and then classified by an 80-mesh wire net. To produce a powder coating. The obtained powder coating material was applied to an object to be coated having a predetermined plate thickness by an electrostatic spraying method with a charge of -80 kv so that the coating average film thickness shown in Table 3 was obtained. Then, after heat curing under the baking conditions shown in Table 3, the appearance of the coating film and the physical properties of the coating film were evaluated. The results are shown in Table 3 and FIGS.
【0048】[0048]
【表2】 [Table 2]
【0049】表2の注 1)商品名:DSM Resins社製品、ポリエステ
ル樹脂、酸価35mgKOH/g。 2)商品名:大日本インキ化学工業(株)製品、ポリエ
ステル樹脂、水酸基価30mgKOH/g。 3)商品名:ShellChemicals社製品、エ
ポキシ樹脂、エポキシ当量650g/Eq。 4)商品名;huels社製品、アダクト体イソシアネ
ート硬化剤、イソシアネート当量280g/Eq。 5)商品名:Monsant社製品、レベリング剤。 6)商品名:Estron Chemical,In
c.社製品、硬化促進剤。 7)商品名:東洋紡績(株)製品、真球状アクリルビー
ズ、( )内は平均粒径。Note 1 in Table 2) Trade name: DSM Resins product, polyester resin, acid value 35 mg KOH / g. 2) Trade name: Dainippon Ink and Chemicals, Inc. product, polyester resin, hydroxyl value 30 mgKOH / g. 3) Trade name: Shell Chemicals, epoxy resin, epoxy equivalent 650 g / Eq. 4) Trade name; product of Huels, isocyanate hardener for adduct, isocyanate equivalent weight 280 g / Eq. 5) Trade name: Monsant product, leveling agent. 6) Trade name: Estron Chemical, In
c. Company product, curing accelerator. 7) Product name: Toyobo Co., Ltd. product, true spherical acrylic beads, average particle size in parentheses.
【0050】[0050]
【表3】 [Table 3]
【0051】実施例1は(A)成分としてハイブリッド
系粉体塗料、実施例2は平均粒径の異なる樹脂ビーズを
2種用いたハイブリッド系粉体塗料、実施例3はPCM
(ブレコート金属鋼板)用ウレタン系粉体塗料を用いた
本発明の熱硬化性粉体塗料である。上記粉体塗料を用い
て塗装された塗膜は表3および図3〜5から明らかなよ
うに、実施例1〜3のいずれもサテン調の均一な凹凸模
様が被塗物上に形成され、優れた意匠性と共に良好な化
学性能および物理性能を示す塗膜が得られた。Example 1 is a hybrid powder coating as the component (A), Example 2 is a hybrid powder coating using two kinds of resin beads having different average particle diameters, and Example 3 is a PCM.
It is a thermosetting powder coating material of the present invention using a urethane-based powder coating material for (Brecoat metal steel sheet). As is clear from Table 3 and FIGS. 3 to 5, the coating film coated with the above powder coating has a satin-like uniform uneven pattern formed on the article to be coated, A coating film having excellent chemical properties and physical properties as well as excellent design properties was obtained.
【0052】比較例1〜2 表4に示した比較例1〜2の構成成分を、ドライブレン
ダー(商品名:ヘンシェルミキサー、三井三池化工機株
式会社製)により約1分間均一に混合し、次に80〜1
00℃の温度条件で押出混練機(商品名:ブスコニーダ
ーPR−46、ブス社製)を用いて溶融混練を行い、冷
却後ハンマー式衝撃粉砕機で微粉砕したのち80メッシ
ュの金網で分級することで粉体塗料を製造した。得られ
た粉体塗料は、表5に示す塗装平均膜厚となるように−
80kv荷電で静電吹付法により所定の板厚の被塗物に
塗装を行った。次いで表5に示した焼付条件において加
熱硬化させた後、塗膜外観および塗膜物性について評価
を行った。結果を表5および図6〜7に示す。Comparative Examples 1 and 2 The components of Comparative Examples 1 and 2 shown in Table 4 were uniformly mixed for about 1 minute by a dry blender (trade name: Henschel mixer, manufactured by Mitsui Miike Kakoki Co., Ltd.), and then 80 to 1
Melt-kneading is performed using an extrusion kneader (trade name: Busco Kneader PR-46, manufactured by Buss Co., Ltd.) at a temperature of 00 ° C., and after cooling, finely pulverized with a hammer-type impact pulverizer, and then classified with a wire mesh of 80 mesh. To produce a powder coating. The obtained powder coating material should have the coating average film thickness shown in Table-5.
Coating was performed on an object to be coated having a predetermined plate thickness by electrostatic spraying with 80 kv charging. Then, after heating and curing under the baking conditions shown in Table 5, the appearance of the coating film and the physical properties of the coating film were evaluated. The results are shown in Table 5 and FIGS.
【0053】比較例3〜4 比較例3は、表4に示した(A)成分をドライブレンダ
ー(商品名:ヘンシェルミキサー、三井三池化工機株式
会社製)により約1分間均一に混合し、次に80〜10
0℃の温度条件で押出混練機(商品名:ブスコニーダー
PR−46、ブス社製)を用いて溶融混練を行い、冷却
後(B)成分を添加してハンマー式衝撃粉砕機で微粉砕
したのち80メッシュの金網で分級し、粉体塗料を製造
した。比較例4は上記の比較例3と同様に溶融混練を行
い、冷却後にハンマー式衝撃粉砕機で微粉砕した。その
後、(B)成分を添加してから80メッシュの金網で分
級することで粉体塗料を製造した。得られた粉体塗料
は、表5に示す塗装平均膜厚となるように−80kv荷
電で静電吹付法により所定の板厚の被塗物に塗装を行っ
た。次いで表5に示した焼付条件において加熱硬化させ
た後、塗膜外観および塗膜物性について評価を行った。
結果を表5および図6〜7に示す。Comparative Examples 3 to 4 In Comparative Example 3, the components (A) shown in Table 4 were uniformly mixed for about 1 minute by a dry blender (trade name: Henschel mixer, manufactured by Mitsui Miike Kakoki Co., Ltd.), and then 80 to 10
Melt-kneading is performed using an extrusion kneader (trade name: Busco Kneader PR-46, manufactured by Buss Co., Ltd.) under a temperature condition of 0 ° C., and after cooling, the component (B) is added and finely pulverized with a hammer-type impact pulverizer. The powder coating was manufactured by classifying with a wire mesh of 80 mesh. In Comparative Example 4, melt kneading was performed in the same manner as in Comparative Example 3 described above, and after cooling, finely pulverized by a hammer impact crusher. Then, the powder coating was manufactured by adding the component (B) and then classifying with a wire mesh of 80 mesh. The obtained powder coating material was applied to an object to be coated having a predetermined plate thickness by an electrostatic spraying method with a charge of -80 kv so that the average coating film thickness shown in Table 5 was obtained. Then, after heating and curing under the baking conditions shown in Table 5, the appearance of the coating film and the physical properties of the coating film were evaluated.
The results are shown in Table 5 and FIGS.
【0054】[0054]
【表4】 [Table 4]
【0055】[0055]
【表5】 [Table 5]
【0056】比較例1は、(B)成分として不定形樹脂
を用いた粉体塗料である。得られた塗膜は図6に示すよ
うに、不定形樹脂に起因する不規則な角形の凸模様を形
成し、目的とする丸みを帯びた凸模様は得られなかっ
た。比較例2では、(B)成分として平均粒径80μm
の樹脂ビーズを含有する粉体塗料を用いて100μm以
上に厚塗り塗装を行ったものである。得られた塗膜は図
7に示すように、塗膜表面に充分な凸模様が形成されず
意匠性に欠くものであった。一方、比較例3、4では得
られた塗料は、いずれも塗装中に吹きムラを生じ模様は
得られず、塗膜物性の低下も認められた。Comparative Example 1 is a powder coating using an amorphous resin as the component (B). As shown in FIG. 6, the obtained coating film formed an irregular rectangular convex pattern due to the amorphous resin, and the desired rounded convex pattern was not obtained. In Comparative Example 2, the component (B) has an average particle size of 80 μm.
The powder coating containing the resin beads described in 1 above was applied to a thickness of 100 μm or more. As shown in FIG. 7, the obtained coating film did not have a sufficient convex pattern on the surface of the coating film and lacked in designability. On the other hand, in each of the paints obtained in Comparative Examples 3 and 4, spraying unevenness occurred during coating, no pattern was obtained, and deterioration of physical properties of the coating film was also recognized.
【0057】[0057]
【発明の効果】本発明の凹凸模様形成性粉体塗料は、粉
体塗料成分中の熱硬化性樹脂の加熱硬化温度において形
状の安定な樹脂ビーズを含むため、均一かつ緻密で微細
な丸みを帯びた突起状の模様で表現されるソフトで意匠
性の高いサテン調の凹凸模様を有する塗膜を形成するこ
とができる。EFFECTS OF THE INVENTION Since the powder coating material for forming a concavo-convex pattern of the present invention contains resin beads whose shape is stable at the heat curing temperature of the thermosetting resin in the powder coating composition, it is possible to obtain uniform, dense and fine roundness. It is possible to form a coating film having a satin-like concavo-convex pattern that is soft and has a high design, which is represented by a tinged projecting pattern.
【0058】本発明の凹凸模様形成性粉体塗料の製造方
法は粉体塗料成分中の樹脂の溶融温度に加熱して樹脂ビ
ーズを分散させるようにしたため、粉体塗料成分と樹脂
ビーズが溶着一体化した粉体塗料を製造することがで
き、これにより上記のような凹凸模様を有し、かつ化学
性能および物理性能、特に加工性および耐食性に優れた
塗膜を形成することができる。In the method for producing a powder coating composition for forming a concavo-convex pattern of the present invention, the resin beads are dispersed by heating to the melting temperature of the resin in the powder coating component, so that the powder coating component and the resin beads are welded and integrated. It is possible to produce a powder coating that has been converted into a powder coating, and thereby a coating film having the above-mentioned unevenness pattern and excellent in chemical performance and physical performance, particularly workability and corrosion resistance can be formed.
【0059】本発明の塗装物は、上記のような粉末塗料
を被塗装物に塗布し、樹脂ビーズの平均粒径を上回らな
い膜厚の塗膜を形成するため、上記のような優れた凹凸
模様を有する塗膜を形成した塗装物を得ることができ
る。In the coated article of the present invention, the powder coating material as described above is applied to the article to be coated to form a coating film having a film thickness not exceeding the average particle diameter of the resin beads. A coated article on which a coating film having a pattern is formed can be obtained.
【図1】(a)は実施形態の塗装物の表面の拡大斜視
図、(b)は断面図である。FIG. 1A is an enlarged perspective view of a surface of a coated article according to an embodiment, and FIG. 1B is a sectional view.
【図2】(a)は比較例の塗装物の表面の拡大斜視図、
(b)は断面図である。FIG. 2A is an enlarged perspective view of a surface of a coated article of a comparative example,
(B) is a sectional view.
【図3】実施例1の3次元断面図である。FIG. 3 is a three-dimensional cross-sectional view of Example 1.
【図4】実施例2の3次元断面図である。FIG. 4 is a three-dimensional cross-sectional view of Example 2.
【図5】実施例3の3次元断面図である。FIG. 5 is a three-dimensional cross-sectional view of Example 3.
【図6】比較例1の3次元断面図である。6 is a three-dimensional sectional view of Comparative Example 1. FIG.
【図7】比較例2の3次元断面図である。7 is a three-dimensional sectional view of Comparative Example 2. FIG.
1 塗装物 2 被塗装物 3 凹凸塗膜 4 塗膜 5 樹脂ビーズ 6 凹部 7 凸部 8 樹脂粒状物 DESCRIPTION OF SYMBOLS 1 Coated product 2 Coated product 3 Uneven coating film 4 Coating film 5 Resin beads 6 Recessed portion 7 Convex portion 8 Resin granular material
Claims (4)
熱硬化性粉体塗料成分60〜99.9重量%、および
(B)平均粒径が10〜200μm、かつ前記(A)成
分の加熱硬化温度において形状の安定な樹脂ビーズ0.
1〜40重量%を含有する凹凸模様形成性粉体塗料。1. A thermosetting powder coating composition containing 60% to 99.9% by weight of (A) a thermosetting resin which is solid at room temperature, and (B) an average particle size of 10 to 200 μm, and (A). Resin beads whose shape is stable at the heat curing temperature of the components.
An uneven pattern-forming powder coating material containing 1 to 40% by weight.
フィン樹脂、アクリル樹脂、エポキシ樹脂、ポリエステ
ル樹脂、ポリウレタン樹脂、およびメラミン樹脂、なら
びにこれらを三次元架橋させた熱可塑性樹脂および熱硬
化性樹脂からなる樹脂ビーズの中から選ばれた少なくと
も1種である請求項1記載の粉体塗料。2. Resin beads comprising a polyamide resin, a polyolefin resin, an acrylic resin, an epoxy resin, a polyester resin, a polyurethane resin and a melamine resin, and a thermoplastic resin and a thermosetting resin obtained by three-dimensionally crosslinking these resins. The powder coating composition according to claim 1, which is at least one selected from the group consisting of:
熱硬化性粉体塗料成分60〜99.9重量%、および
(B)平均粒径が10〜200μm、かつ前記(A)成
分の加熱硬化温度において形状の安定な樹脂ビーズ0.
1〜40重量%を、 前記(A)成分中の樹脂成分が溶融する温度に加熱し
て、(B)成分を(A)成分中に分散させることを特徴
とする凹凸模様形成性粉体塗料の製造方法。3. (A) 60 to 99.9% by weight of a thermosetting powder coating material component containing a thermosetting resin which is solid at room temperature, and (B) an average particle size of 10 to 200 μm, and (A) Resin beads whose shape is stable at the heat curing temperature of the components.
1-40% by weight is heated to a temperature at which the resin component in the component (A) is melted to disperse the component (B) in the component (A). Manufacturing method.
物に塗布し、(A)成分の硬化塗膜が(B)成分の平均
粒径を上回らない膜厚となるように形成した塗装物。4. The powder coating composition according to claim 1 or 2 is applied to an object to be coated, and a cured coating film of component (A) is formed so as to have a film thickness not exceeding the average particle diameter of component (B). Painted items.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12382696A JP3605940B2 (en) | 1996-05-17 | 1996-05-17 | Irregular pattern-forming powder coating, method for producing the same, and coated object |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12382696A JP3605940B2 (en) | 1996-05-17 | 1996-05-17 | Irregular pattern-forming powder coating, method for producing the same, and coated object |
Publications (2)
Publication Number | Publication Date |
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JPH09302272A true JPH09302272A (en) | 1997-11-25 |
JP3605940B2 JP3605940B2 (en) | 2004-12-22 |
Family
ID=14870329
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JP12382696A Expired - Fee Related JP3605940B2 (en) | 1996-05-17 | 1996-05-17 | Irregular pattern-forming powder coating, method for producing the same, and coated object |
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001342428A (en) * | 2000-05-30 | 2001-12-14 | Nisshin Steel Co Ltd | Bead-containing paint excellent in press working followability of coating film therefrom, metal siding and metal plate each coated with the paint |
JP2006123373A (en) * | 2004-10-29 | 2006-05-18 | Dainippon Printing Co Ltd | Decorative steel sheet and its manufacturing method |
JP2007091802A (en) * | 2005-09-27 | 2007-04-12 | Dainippon Toryo Co Ltd | Uneven pattern-forming powder coating composition |
JP2008168177A (en) * | 2007-01-09 | 2008-07-24 | Okamura Corp | Manufacturing method of plate excellent in slipperiness |
EP3747958A1 (en) | 2019-06-06 | 2020-12-09 | Canon Kabushiki Kaisha | Article, optical apparatus, and coating material |
-
1996
- 1996-05-17 JP JP12382696A patent/JP3605940B2/en not_active Expired - Fee Related
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001342428A (en) * | 2000-05-30 | 2001-12-14 | Nisshin Steel Co Ltd | Bead-containing paint excellent in press working followability of coating film therefrom, metal siding and metal plate each coated with the paint |
JP2006123373A (en) * | 2004-10-29 | 2006-05-18 | Dainippon Printing Co Ltd | Decorative steel sheet and its manufacturing method |
JP2007091802A (en) * | 2005-09-27 | 2007-04-12 | Dainippon Toryo Co Ltd | Uneven pattern-forming powder coating composition |
JP2008168177A (en) * | 2007-01-09 | 2008-07-24 | Okamura Corp | Manufacturing method of plate excellent in slipperiness |
EP3747958A1 (en) | 2019-06-06 | 2020-12-09 | Canon Kabushiki Kaisha | Article, optical apparatus, and coating material |
Also Published As
Publication number | Publication date |
---|---|
JP3605940B2 (en) | 2004-12-22 |
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