JP2002069379A - Method for producing powder coating material - Google Patents
Method for producing powder coating materialInfo
- Publication number
- JP2002069379A JP2002069379A JP2000254309A JP2000254309A JP2002069379A JP 2002069379 A JP2002069379 A JP 2002069379A JP 2000254309 A JP2000254309 A JP 2000254309A JP 2000254309 A JP2000254309 A JP 2000254309A JP 2002069379 A JP2002069379 A JP 2002069379A
- Authority
- JP
- Japan
- Prior art keywords
- powder
- powder coating
- coating material
- raw material
- material composition
- 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
Links
Landscapes
- Processes Of Treating Macromolecular Substances (AREA)
- Paints Or Removers (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、粉体塗料の製造方
法に関し、特に、粉体塗料製造の際に副製する微細副製
粉末を再利用して、粉体塗料を製造する方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a powder coating, and more particularly, to a method for producing a powder coating by reusing fine by-product powder produced by the process of producing a powder coating.
【０００２】[0002]
【従来の技術】現在、産業の各分野において、世界的に
省資源化又は資源の有効利用が図られている。ところ
で、揮発物の殆どない粉体塗料は、環境汚染の恐れの少
ない塗料として近年大きな脚光を浴びている。しかし、
溶融混練工程及び粉砕工程を採用する乾式粉体塗料の製
造方法においては、粉砕工程で発生する微細副製粉末
は、かさ比重が非常に小さいため、そのまま粉体塗料用
原料組成物に混合又は混練を行っても、混練機への流入
量が少なく、生産性が著しく低くなり、更に、混練機中
での滞留時間が増大して、塗料組成物の熱履歴を著しく
増大させるため、塗膜性能が劣化し易く、単独で使用す
る場合には、スピットの発生や、流動性の悪化等の塗装
作業面での問題が生じ易い。そのため、これらの微細副
製粉末は、塗料として使用することができないので、こ
れまで廃棄せざるを得なかった。また、微細副製粉末
は、粉体塗料の歩留まりの低下を招くだけでなく、廃棄
にかかる費用が粉体塗料の価格を上昇させる一要因とも
なっていた。2. Description of the Related Art At present, in various industrial fields, resource saving or effective use of resources is being promoted worldwide. By the way, powder coatings with almost no volatiles have recently attracted much attention as coatings with less risk of environmental pollution. But,
In the method for producing a dry powder coating that employs a melt-kneading step and a pulverizing step, the fine secondary powder generated in the pulverizing step has a very low bulk specific gravity, and thus is directly mixed or kneaded with the raw material composition for the powder coating. However, the flow rate into the kneading machine is small, the productivity is extremely low, the residence time in the kneading machine is increased, and the heat history of the coating composition is significantly increased. Is easily deteriorated, and when used alone, problems in the painting work such as generation of spits and deterioration of fluidity are likely to occur. For this reason, these fine by-product powders cannot be used as paints, and have to be discarded until now. In addition, the fine secondary powder not only lowers the yield of the powder coating, but also the cost of disposal is one factor that increases the price of the powder coating.
【０００３】[0003]
【発明が解決しようとする課題】従って、本発明は、塗
膜特性を劣化させることなく、資源を有効利用できる経
済的な粉体塗料の製造方法を提供することを目的とす
る。SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide an economical method for producing a powder coating material which can effectively utilize resources without deteriorating the characteristics of the coating film.
【０００４】[0004]
【課題を解決するための手段】本発明者らは、上記目的
を達成するため、鋭意検討した結果、混練工程後の粉砕
工程で副製する微細粉体状の副製粉末に圧力を掛け、圧
縮成型を行いペレット化し、前記ペレットを粗砕機を用
いて弱粉砕した後、粉体塗料用原料組成物として使用す
ると、微細副製粉末自体の混練性、又はその微細副製粉
末と粉体塗料用原料組成物との混練性が損なわれず、し
かも、従来の粉体塗料から得られる塗膜と同等の耐衝撃
性等の特性を有する塗膜が得られることを見出した。Means for Solving the Problems The inventors of the present invention have conducted intensive studies in order to achieve the above object, and as a result, have applied pressure to a fine powder-like secondary powder produced in a pulverizing step after a kneading step. After compression molding into pellets, the pellets are weakly pulverized using a crusher, and when used as a raw material composition for powder coating, the kneadability of the fine secondary powder itself, or the fine secondary powder and the powder coating It has been found that a coating film having the same properties as a coating film obtained from a conventional powder coating material, such as impact resistance, can be obtained without impairing the kneadability with the raw material composition.
【０００５】本発明は、このような新規な知見に基づい
て成されたものである。The present invention has been made based on such new findings.
【０００６】即ち、本発明は、粉体塗料用原料組成物の
混練後の粉砕工程で副製する微細粉体状の副製粉末から
粉体塗料を製造する方法であって、前記微細副製粉末を
４９０．３３２５Ｎ（５０ｋｇ／ｃｍ2 ）以上の圧力を
掛け、圧縮成型を行いペレット化し、次いで前記ペレッ
トを粗砕機を用いて弱粉砕した後、前記粉体塗料用原料
組成物として使用することを特徴とする粉体塗料の製造
方法に関する。That is, the present invention relates to a method for producing a powder coating from a fine powder secondary powder produced in a pulverizing step after kneading the raw material composition for a powder coating, wherein the fine secondary production is carried out. Applying a pressure of 490.3325 N (50 kg / cm 2 ) or more to the powder, compressing it into pellets, and then weakly pulverizing the pellets using a crusher, and then using the pellets as the raw material composition for powder coating. And a method for producing a powder coating.
【０００７】[0007]
【発明の実施の形態】以下、本発明について、詳細に説
明する。本発明で使用する粉体塗料用原料組成物は、粉
体塗料の製造に使用される、樹脂、硬化剤、顔料、並び
に必要に応じて加えられる添加剤からなる。本発明の方
法は、従来から実施されている粉体塗料の製造に対して
広く適用できる。従って、本発明で使用される粉体塗料
用原料組成物は、従来より粉体塗料の製造に使用されて
いるものを特に制限されることなく各種使用することが
できる。即ち、粉体塗料用原料組成物に使用される樹脂
として、従来から粉体塗料の製造に用いられている各種
の樹脂を使用することができる。このような樹脂として
は、例えば、ポリエステル−ウレタン硬化系樹脂や、エ
ポキシ−ポリエステル硬化系樹脂、エポキシ系樹脂、ア
クリル系樹脂、アクリル−ポリエステル系樹脂フッ素系
樹脂、アクリル−ウレタン硬化系樹脂、アクリル−メラ
ミン硬化系樹脂、ポリエステル−メラミン硬化系樹脂等
が挙げられ、これら樹脂を単独又は２種以上組み合わせ
で使用することができる。必要に応じて、ノボラック樹
脂や、フェノキシ樹脂、ブチラール樹脂、ケトン樹脂、
ポリエステル樹脂、ロジン等の改質樹脂、エポキシ化
油、ジオクチルフタレート等の可塑剤を適宜使用するこ
とができる。BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail. The raw material composition for a powder coating used in the present invention comprises a resin, a curing agent, a pigment, and additives that are added as needed, which are used in the production of the powder coating. The method of the present invention can be widely applied to the conventional production of powder coatings. Therefore, the raw material composition for powder coatings used in the present invention can be variously used without particular limitation, which has been conventionally used for producing powder coatings. That is, as the resin used in the raw material composition for a powder coating, various resins conventionally used in the production of powder coatings can be used. As such a resin, for example, polyester-urethane curable resin, epoxy-polyester curable resin, epoxy resin, acrylic resin, acrylic-polyester resin fluororesin, acrylic-urethane curable resin, acrylic- Melamine-curable resins, polyester-melamine-curable resins and the like can be mentioned, and these resins can be used alone or in combination of two or more. If necessary, novolak resin, phenoxy resin, butyral resin, ketone resin,
Modified resins such as polyester resins and rosin, epoxidized oils, and plasticizers such as dioctyl phthalate can be used as appropriate.
【０００８】硬化剤としては、例えば、熱硬化性樹脂に
通常使用される硬化剤を特に制限なく各種使用すること
ができる。このような硬化剤としては、例えば、アミド
化合物や、酸無水物、二塩基酸、グリシジル化合物、ア
ミノプラスト樹脂、ブロックイソシアネート等があり、
代表的なものにジシアンジアミド、酸ヒドラジド、トリ
グリシジルイソシアヌレート、イソホロンジイソシアネ
ートブロック体等が挙げられる。例えば、二塩基酸とし
ては、アジピン酸や、ピメリン酸、スベリン酸、セバシ
ン酸、１，１０−デカンジカルボン酸、１，１２−ドデ
カンジカルボン酸、１，２０−エイコサンジカルボン
酸、ヘキサヒドロフタル酸、マレイン酸、フタル酸、シ
クロヘキセン１，２−ジカルボン酸等が挙げられる。本
発明で用いる顔料としては、例えば、二酸化チタン、ベ
ンガラ、酸化鉄、亜鉛末粉、カーボンブラック、フタロ
シアニンブルー、フタロシアニングリーン、キナクリド
ン系顔料、アゾ系顔料、イソインドリノン系顔料、各種
焼成顔料等の着色顔料、シリカ、タルク、硫酸バリウ
ム、炭酸カルシウム、ガラスフレーク等の体質顔料があ
る。As the curing agent, for example, various curing agents commonly used for thermosetting resins can be used without any particular limitation. Examples of such a curing agent include amide compounds, acid anhydrides, dibasic acids, glycidyl compounds, aminoplast resins, and blocked isocyanates.
Representative examples include dicyandiamide, acid hydrazide, triglycidyl isocyanurate, and isophorone diisocyanate block. For example, dibasic acids include adipic acid, pimelic acid, suberic acid, sebacic acid, 1,10-decanedicarboxylic acid, 1,12-dodecanedicarboxylic acid, 1,20-eicosandicarboxylic acid, hexahydrophthalic acid , Maleic acid, phthalic acid, cyclohexene 1,2-dicarboxylic acid and the like. Examples of the pigment used in the present invention include titanium dioxide, red iron oxide, iron oxide, zinc dust, carbon black, phthalocyanine blue, phthalocyanine green, quinacridone pigments, azo pigments, isoindolinone pigments, and various calcined pigments. There are coloring pigments, extenders such as silica, talc, barium sulfate, calcium carbonate, and glass flakes.
【０００９】更に任意に添加することのできる添加剤と
しては、タレ防止剤、表面調整剤、架橋促進剤、紫外線
吸収剤、光安定剤、抗酸化剤等を挙げることができる。
本発明で使用する微細副製粉末は、粉体塗料用原料組成
物を所定の粒径に粉砕する際に副製する微細な粉体であ
る。このような微細副製粉末は、粉砕された粒度の小さ
いものだけでなく、粉砕工程で捕集されずに排気され
て、集塵機に滞留したものも含まれる。これらの微細副
製粉末は、従来廃棄処分に付されており、有効利用され
たものはなかった。このような微細副製粉末としては、
粒径が０．１〜６０μｍ、通常、０．３〜５０μｍの微
粉末粉体塗料組成物が含まれる。このような微細副製粉
末は、圧縮成型して、粒径が１〜５０ｍｍ、好ましくは
５〜３０ｍｍの大きさのペレットにする。１ｍｍ未満の
粒径では、粉体塗料としての混練性が悪くなる。一方、
粒径が５０ｍｍを越えると、混練機に流入する単位時間
当りの量が減少し、混練機内滞留時間の増大を招き塗料
性状が悪化する。圧縮成型は、各種の方法によって実施
することができ、その範囲は当業者には自明である。例
えば、圧縮成型は、二本ロール等を使用して実施するこ
とができる。圧縮成型の際の圧力は、微細副製粉末が粒
径として上記粒径の範囲内に入るものであれば、当業者
が任意に採用することができる。圧縮の際の温度は、熱
履歴による問題を回避するために、低いことが好まし
い。通常、６０℃以下、好ましくは４０℃以下で行うこ
とが適当である。[0009] Additives that can be optionally added include anti-sagging agents, surface conditioners, crosslinking accelerators, ultraviolet absorbers, light stabilizers, antioxidants and the like.
The fine secondary powder used in the present invention is a fine powder which is secondary produced when the raw material composition for a powder coating is ground to a predetermined particle size. Such fine by-product powders include not only those having a small crushed particle size but also those having been exhausted without being collected in the crushing step and retained in the dust collector. These fine by-product powders have been conventionally disposed of, and none have been used effectively. As such fine by-product powder,
A fine powder powder coating composition having a particle size of 0.1 to 60 μm, usually 0.3 to 50 μm is included. Such fine secondary powder is compression-molded into pellets having a particle size of 1 to 50 mm, preferably 5 to 30 mm. If the particle size is less than 1 mm, the kneading properties as a powder coating will be poor. on the other hand,
When the particle size exceeds 50 mm, the amount per unit time flowing into the kneader decreases, and the residence time in the kneader increases, resulting in deterioration of the paint properties. Compression molding can be performed by various methods, the scope of which is obvious to those skilled in the art. For example, compression molding can be performed using two rolls or the like. The pressure at the time of compression molding can be arbitrarily adopted by those skilled in the art as long as the fine secondary powder falls within the above-mentioned range of the particle size. The temperature during compression is preferably low to avoid problems due to thermal history. Usually, it is suitable to carry out at 60 ° C. or lower, preferably at 40 ° C. or lower.
【００１０】上記ペレットを粗砕機を用いて弱粉砕して
たものを粉体塗料用原料組成物として使用する。[0010] The pellets obtained by weakly pulverizing the pellets using a crusher are used as a raw material composition for powder coating.
【００１１】微細副製粉末をペレット化し弱粉砕したも
の（副製粉末再生品ともいう）末圧縮成型は、単独で粉
体塗料用原料組成物として使用してもよく、粉体塗料用
原料組成物の一部として使用してもよい。得られる粉体
塗料が均一の特性を有するため、又は、良好な混練性を
得るためには、副製粉末再生品を粉体塗料用原料組成物
の一部として使用する場合には、両者の樹脂種や、顔料
組成、添加剤組成等の組成が実質的に一致することが好
ましい。また、両者は、着色についても一致しているこ
とが好ましいが、必須ではない。混色の問題があるが、
得られたものの着色に応じて、適宜用途を選定すればよ
い。但し、混色による問題を少なくするためには、粉体
塗料用原料組成物が濃彩色の場合、副製粉末再生品の色
は、それに近似する色であるほど好ましい。また、粉体
塗料用原料組成物が淡彩色の場合、粉体塗料用原料組成
物の色調に変化を生じないように、例えば、少量で使用
すればよい。また、副製粉末再生品を単独で使用して粉
体塗料を製造し、又は粉体塗料用原料組成物の一部とし
て使用して粉体塗料を製造する過程で副製する３次や、
４次等の副製粉末再生品を使用する場合には、熱履歴に
よる弊害を防止するため、粉体塗料用原料組成物１００
重量部に対して、好ましくは、２０重量部以下、更に好
ましくは１５重量部以下の量を混合することが好まし
い。このような３次や４次以降に副製する副製粉末再生
品は、その生成過程において、反復して熱履歴を受ける
ため、副製粉末再生品と粉体塗料用原料組成物との相溶
性が悪化したり、得られる塗膜の平滑性が損なわれ易
い。[0011] The compression molding of the fine secondary powder, which is pelletized and weakly pulverized (also referred to as a secondary powder regenerated product), may be used alone as a raw material composition for powder coating. It may be used as part of an object. For the powder coating obtained to have uniform properties, or, in order to obtain good kneading properties, when the secondary powder regenerated product is used as part of the powder coating raw material composition, It is preferable that the composition such as the resin type, the pigment composition, and the additive composition substantially match. In addition, it is preferable that both colors match, but this is not essential. There is a problem of color mixing,
The application may be appropriately selected depending on the coloring of the obtained product. However, in order to reduce the problem due to color mixing, when the raw material composition for powder coating is a deep color, the color of the secondary powder regenerated product is preferably as close to that as possible. When the raw material composition for powder coating is light-colored, it may be used in a small amount, for example, so as not to change the color tone of the raw material composition for powder coating. Also, a powder paint is manufactured by using the powder regenerated product alone, or a tertiary by-product in the process of manufacturing the powder paint by using as a part of the raw material composition for powder paint,
When a secondary powder regenerated product such as quaternary is used, the raw material composition for powder coating 100
It is preferable to mix 20 parts by weight or less, more preferably 15 parts by weight or less with respect to parts by weight. Such a secondary powder regenerated product produced by the third or fourth order is repeatedly subjected to heat history during the production process, so that the phase of the secondary powder regenerated product and the raw material composition for the powder coating material is deteriorated. The solubility is deteriorated, and the smoothness of the obtained coating film is easily impaired.
【００１２】本発明の方法によって得られた粉体塗料
は、従来の粉体塗料の塗装の場合と同様に、静電スプレ
ーガン、流動浸漬、摩擦帯電ガン、インモールド等を使
用して被塗物、例えば、鋼板等の被塗物に塗装し、熱風
炉、赤外炉、誘導加熱炉等で焼付けることにより、塗膜
を形成することができる。The powder coating obtained by the method of the present invention is coated with an electrostatic spray gun, a fluid immersion, a triboelectric charging gun, an in-mold, etc., in the same manner as in the case of the conventional powder coating. A coating film can be formed by coating an object, for example, an object to be coated such as a steel plate, and baking it in a hot air furnace, an infrared furnace, an induction heating furnace, or the like.
【００１３】[0013]
【実施例】以下、本発明について、更に、製造例、実施
例及び比較例により、更に詳細に説明する。なお、製造
例、実施例及び比較例中の「部」及び「％」は、重量を
基準とする。EXAMPLES Hereinafter, the present invention will be described in more detail with reference to Production Examples, Examples and Comparative Examples. The “parts” and “%” in Production Examples, Examples and Comparative Examples are based on weight.
【００１４】（粉体塗料Ａ及び副生成物Ａ’の調製）水
酸基価４９ｍｇＫＯＨ／ｇの飽和ポリエステル樹脂（日
本ユピカ社製：ＧＶ１１０）６０部にＩＰＤＩ ε-カ
プロラクタムブロックのイソシアネート樹脂（クレアノ
バ社製：ＶｅｓｔａｇｏｎＢ−１５３０）１６部、表面
調整剤としてシリカ吸着アクリル酸オリゴマー（モンサ
ント社製：モダフローパウダー２０００）を１部、脱泡
剤としてベンゾイン０．２部、白色顔料として二酸化チ
タン（石原化学社製：ＣＲ−９５）２４部を混合し、エ
クストルーダーで混練し、粉砕分級後、５０％平均体積
粒度３０μｍの粉体塗料Ａを得た。またその際発生した
５０％平均体積粒度１０μｍの粉体塗料副生成物Ａ’を
得た。(Preparation of Powder Coating A and By-product A ') An isocyanate resin having an IPDI ε-caprolactam block (manufactured by CLEANOVA) was added to 60 parts of a saturated polyester resin having a hydroxyl value of 49 mgKOH / g (manufactured by Nippon Yupika Co., Ltd .: GV110). Vestagon B-1530), 16 parts of a silica-adsorbed acrylic acid oligomer (manufactured by Monsanto: Modaflow Powder 2000) as a surface conditioner, benzoin as a defoaming agent, 0.2 parts, titanium dioxide as a white pigment (Ishihara Chemical Co., Ltd.) : CR-95), and kneaded with an extruder. After pulverization and classification, powder coating material A having a 50% average volume particle size of 30 µm was obtained. Further, a powder coating by-product A ′ having a 50% average volume particle size of 10 μm generated at that time was obtained.
【００１５】（粉体塗料Ｂ及び副生成物Ｂ’の調製）水
酸基価４９ｍｇＫＯＨ／ｇの飽和ポリエステル樹脂（日
本ユピカ社製：ＧＶ１１０）８０部にＩＰＤＩ ε-カ
プロラクタムブロックのイソシアネート樹脂（クレアノ
バ社製：ＶｅｓｔａｇｏｎＢ−１５３０）２０部、表面
調整剤としてシリカ吸着アクリル酸オリゴマー（モンサ
ント社製：モダフローパウダー２０００）を１．５部、
脱泡剤としてベンゾイン０．３部、黒色顔料としてカー
ボンブラック（三菱化学社製：ＭＡ−１００）４部（白
色顔料／黒色顔料＝１００／１）を混合し、エクストル
ーダーで混練し、粉砕分級後、黒色の５０％平均体積粒
度３０μｍの粉体塗料Ｂを得た。またその際発生した５
０％平均体積粒度１０μｍの粉体塗料副生成物Ｂ’を得
た。(Preparation of Powder Coating B and By-product B ') 80 parts of a saturated polyester resin having a hydroxyl value of 49 mg KOH / g (manufactured by Nippon Yupika Co., Ltd .: GV110) was mixed with an isocyanate resin of IPDI ε-caprolactam block (manufactured by Clenova): Vestagon B-1530), 20 parts, silica adsorbed acrylic acid oligomer (manufactured by Monsanto: Modaflow Powder 2000) as a surface conditioner, 1.5 parts,
0.3 parts of benzoin as a defoaming agent and 4 parts of carbon black (MA-100, manufactured by Mitsubishi Chemical Corporation) (white pigment / black pigment = 100/1) as a black pigment are mixed, kneaded with an extruder, and pulverized and classified. Thereafter, a black powder coating material B having a 50% average volume particle size of 30 μm was obtained. 5 which occurred at that time
A powder coating by-product B ′ having a 0% average volume particle size of 10 μm was obtained.
【００１６】（参考例１）作成した粉体塗料Ａ、Ｂを１
／１の比率で混合し、圧縮成型機を用い、６８６．４６
５５Ｎ（７０ｋｇ／ｃｍ2 ）の圧力で成型を行い、得ら
れたペレットをピンミルで粉砕、分級を経て、５０％平
均体積粒度３０μｍの粉体塗料ＡＢを作成した。Reference Example 1 The prepared powder coatings A and B were
, And mixed with a compression molding machine at 686.46.
Molding was performed at a pressure of 55 N (70 kg / cm 2 ), and the obtained pellets were pulverized with a pin mill and classified to prepare a powder coating AB having a 50% average volume particle size of 30 μm.
【００１７】（実施例１）作成した粉体塗料Ａ’、Ｂ’
を１／１の比率で混合し、圧縮成型機を用い、６８６．
４６５５Ｎ（７０ｋｇ／ｃｍ2 ）の圧力で成型を行い、
得られたペレットをピンミルで粉砕、分級を経て、５０
％平均体積粒度３０μｍの粉体塗料Ａ’Ｂ’を作成し
た。(Example 1) Powder coatings A 'and B' prepared
Were mixed at a ratio of 1/1, and 686.
Molding at a pressure of 4655 N (70 kg / cm 2 )
The obtained pellets were pulverized with a pin mill and classified to obtain 50 pellets.
% Average volume particle size 30 μm was prepared.
【００１８】（比較例１）粉体塗料Ａ及びＢを、それぞ
れを１／１の比率で混合し、粉体塗料Ａ／Ｂを作成し
た。Comparative Example 1 Powder coatings A and B were mixed at a ratio of 1/1 to prepare powder coatings A / B.
【００１９】（比較例２）作成した粉体塗料Ａ’、Ｂ’
を１／１の比率で混合し、粉体塗料Ａ’／Ｂ’を作成し
た。(Comparative Example 2) Powder Coatings A ', B' Made
Were mixed at a ratio of 1/1 to prepare powder coating materials A ′ / B ′.
【００２０】（比較例３）作成した粉体塗料Ａ、Ｂを１
／１の比率で混合し、圧縮成型機を用い、２９４．１９
９５Ｎ（３０ｋｇ／ｃｍ2 ）の圧力で成型を行い、得ら
れたペレットをピンミルで粉砕、分級を経て、５０％平
均体積粒度３０μｍの粉体塗料ＡＢ２を作成した。(Comparative Example 3) The prepared powder coatings A and B were 1
/ 1 and mixed with a compression molding machine at 294.19.
Molding was performed under a pressure of 95 N (30 kg / cm 2 ), and the obtained pellets were pulverized with a pin mill and classified to prepare a powder coating AB2 having a 50% average volume particle size of 30 μm.
【００２１】各々の塗料を冷間圧延鋼板に粉体塗装機
（ランズバーグゲマ社製 ＰＧ−１）を用いて、荷電圧
−８０ｋＶで塗装を行い。熱風乾燥炉を用いて２００℃
で１０分間加熱を行い、下記の評価を行った。Each paint was applied to a cold-rolled steel sheet by using a powder coating machine (PG-1 manufactured by Ransberg Gemma) at a load voltage of -80 kV. 200 ° C using hot air drying oven
For 10 minutes, and the following evaluation was performed.
【００２２】塗膜の状態：各色のドットが目視で判定で
きるかを２０ｃｍの距離から観察を行った。結果を表１
に示す。State of coating film: It was observed from a distance of 20 cm whether dots of each color could be visually judged. Table 1 shows the results
Shown in
【００２３】[0023]
【表１】 [Table 1]
【００２４】[0024]
【発明の効果】本発明は、塗膜特性を劣化させることな
く、資源を有効利用できる経済的な粉体塗料の製造方法
を可能にした。According to the present invention, an economical method for producing a powder coating material capable of effectively utilizing resources without deteriorating the characteristics of a coating film has been made possible.
───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 4F070 AA29 AA47 AA56 AC04 AC15 AC39 AE04 AE30 DA52 DC13 4J038 CD091 CG001 DB001 DB191 DB471 DG111 KA03 LA07 PA02 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 4F070 AA29 AA47 AA56 AC04 AC15 AC39 AE04 AE30 DA52 DC13 4J038 CD091 CG001 DB001 DB191 DB471 DG111 KA03 LA07 PA02
Claims (1)
程で副製する微細粉体状の副製粉末から粉体塗料を製造
する方法であって、前記微細副製粉末を４９０．３３２
５Ｎ（５０ｋｇ／ｃｍ2 ）以上の圧力を掛け、圧縮成型
を行いペレット化し、次いで前記ペレットを粗砕機を用
いて弱粉砕した後、前記粉体塗料用原料組成物として使
用することを特徴とする粉体塗料の製造方法。1. A method for producing a powder coating from a fine powder secondary powder produced in a pulverizing step after kneading the powder coating raw material composition, wherein the fine secondary powder is 490. 332
The method is characterized in that a pressure of 5 N (50 kg / cm 2 ) or more is applied, compression molding is performed, pellets are formed, and then the pellets are weakly pulverized using a crusher and then used as the raw material composition for powder coating. Manufacturing method of powder coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000254309A JP2002069379A (en) | 2000-08-24 | 2000-08-24 | Method for producing powder coating material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000254309A JP2002069379A (en) | 2000-08-24 | 2000-08-24 | Method for producing powder coating material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002069379A true JP2002069379A (en) | 2002-03-08 |
Family
ID=18743279
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000254309A Pending JP2002069379A (en) | 2000-08-24 | 2000-08-24 | Method for producing powder coating material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2002069379A (en) |
-
2000
- 2000-08-24 JP JP2000254309A patent/JP2002069379A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100560637C (en) | Raw mix powder compositions and its preparation method | |
| JPH0578605A (en) | Powder coating giving uneven pattern, its production, production device and coating method therefor, and coating film therefrom | |
| CN104877531B (en) | A kind of method of utilization unsaturated polyester varnish waste-material-preparing powdery paints | |
| KR102374055B1 (en) | Powder paint for home appliance coil material and its manufacturing method | |
| JPH09255896A (en) | Powdery coating material composition to be readily screened | |
| CN108473809A (en) | Powder coating, the manufacturing method of powder coating and coated article | |
| JP2711036B2 (en) | Powder coatings and raw materials for powder coatings | |
| CN1820057A (en) | Solid pigment preparations and the dispersions thereof in organic solvents, method for the production thereof, and use of the same | |
| CN1445313A (en) | Powder coating composition and method | |
| JP2002069379A (en) | Method for producing powder coating material | |
| CN113930112B (en) | Preparation process method of powder coating | |
| JP2002030256A (en) | Method for producing powder coating material | |
| JP2002069334A (en) | Method for producing powder coating | |
| JP3107289B2 (en) | Method for producing powder coating composition | |
| JPH107942A (en) | Production of powder coating material from fine by-product powder | |
| JP2012111833A (en) | Method for producing regenerated powder coating | |
| CN110041805A (en) | A kind of scumbling powdery paints and preparation method thereof used suitable for body of a motor car | |
| JP2004018827A (en) | Method for producing powder coating | |
| CN107964336A (en) | UV cures anion powder coating and its preparation method and application and anion release product | |
| JP2012111834A (en) | Method for producing regenerated powder coating | |
| JP2004331732A (en) | Raw material masterbatch for thermosetting powder coating material and preparation method therefor, thermosetting powder coating material using the same and preparation method therefor, and article coated with the thermosetting powder coating material | |
| JPH11100534A (en) | Powder coating material for electrostatic coating and method for coating therewith | |
| Pietschmann | Powder Coatings | |
| JP2008063581A (en) | Method for manufacturing silver-metallic powder coating for tribocharging spray gun | |
| JPS63159480A (en) | Powder coating |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A625 | Written request for application examination (by other person) |
Free format text: JAPANESE INTERMEDIATE CODE: A625 Effective date: 20050805 |
|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20080403 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20080425 |
|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20080820 |