JPH031073B2 - - Google Patents
Info
- Publication number
- JPH031073B2 JPH031073B2 JP59226241A JP22624184A JPH031073B2 JP H031073 B2 JPH031073 B2 JP H031073B2 JP 59226241 A JP59226241 A JP 59226241A JP 22624184 A JP22624184 A JP 22624184A JP H031073 B2 JPH031073 B2 JP H031073B2
- Authority
- JP
- Japan
- Prior art keywords
- plate material
- temperature heating
- board
- paint
- base layer
- 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.)
- Expired - Lifetime
Links
- 239000000463 material Substances 0.000 claims description 45
- 238000010438 heat treatment Methods 0.000 claims description 41
- 239000003973 paint Substances 0.000 claims description 31
- 239000000843 powder Substances 0.000 claims description 22
- 238000000034 method Methods 0.000 claims description 19
- 238000000576 coating method Methods 0.000 claims description 18
- 238000009503 electrostatic coating Methods 0.000 claims description 18
- 239000011248 coating agent Substances 0.000 claims description 14
- 239000002184 metal Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 238000010422 painting Methods 0.000 description 5
- 239000002023 wood Substances 0.000 description 5
- 239000011120 plywood Substances 0.000 description 3
- 229920013716 polyethylene resin Polymers 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 241000218691 Cupressaceae Species 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 230000037303 wrinkles Effects 0.000 description 2
- 241000167854 Bourreria succulenta Species 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 235000019693 cherries Nutrition 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Application Of Or Painting With Fluid Materials (AREA)
Description
【発明の詳細な説明】 本発明は板材の塗装方法に関する。[Detailed description of the invention] The present invention relates to a method for coating plate materials.
一般に、被塗装物である板材が木製の場合は、
板材が通気性を有するために塗装後の塗膜がエア
ーにより膨出し、塗装面に多数の小突起が発生し
易いという問題がある。そして、これらの小突起
は被塗装物の外観品質を著しく低下させる。 Generally, if the board to be painted is made of wood,
Since the board material has air permeability, the paint film after painting swells due to air, and there is a problem in that a large number of small protrusions are likely to occur on the painted surface. These small projections significantly deteriorate the appearance quality of the object to be painted.
本発明はこのような問題点を解決するもので、
木製板材であつてもエアーによる小突起やしわが
発生せず、塗装面の仕上がり状態が極めて良好な
板材の塗装方法を提供することを目的とする。そ
こで、本発明の特徴とするところは、静電塗装の
ための金属製受け盤上に被塗装物としての木製板
材を載置した状態で該受け盤と板材を、高温加熱
工程にて高温に加熱した後、該受け盤と板材を
初期静電塗装工程に搬送し、該初期静電塗装工
程にて第１粉末状塗料を板材の表面上に塗装
し、その後、該受け盤と板材を中温加熱工程に
搬送し、該中温加熱工程にて該第１粉末状塗料
を板材の表面に融着させるべき中温に加熱して、
該表面上に第１粉末状塗料からなる下地層を形成
し、次に、該受け盤と板材を後期静電塗装工程
に搬送し、該後期静電塗装工程にて第２粉末状
塗料を該下地層の表面上に塗装し、その後、該受
け盤と板材を低温加熱工程に搬送し、該低温加
熱工程にて該第２粉末状塗料を該下地層の表面
に融着させるべき低温にて加熱して、該下地層の
表面上に第２粉末状塗料からなる仕上層を形成す
る点にある。 The present invention solves these problems,
To provide a method for painting a wooden board, which does not produce small protrusions or wrinkles caused by air and gives an extremely good finish on the painted surface. Therefore, a feature of the present invention is that a wooden board as an object to be coated is placed on a metal receiving board for electrostatic coating, and the receiving board and the board are heated to a high temperature in a high-temperature heating process. After heating, the receiver plate and plate material are transported to an initial electrostatic coating process, in which a first powder paint is applied onto the surface of the plate material, and then the receiver plate and plate material are heated to medium temperature. conveyed to a heating step, heated in the medium temperature heating step to a medium temperature at which the first powder coating material is to be fused to the surface of the board material,
A base layer made of a first powder coating material is formed on the surface, and then the receiving plate and the board are transported to a later electrostatic coating process, and a second powder coating material is coated in the latter electrostatic coating process. Coating on the surface of the base layer, and then conveying the receiving plate and the plate material to a low temperature heating process, and in the low temperature heating process, the second powder paint is fused to the surface of the base layer at a low temperature. The method is heated to form a finishing layer of a second powder coating on the surface of the base layer.
以下、実施例を示す図面に基いて本発明を詳説
する。 EMBODIMENT OF THE INVENTION Hereinafter, the present invention will be explained in detail based on drawings showing examples.
第１図は本発明に係る板材の塗装方法に用いら
れる装置の簡略図である。図において、１…は
鉄、鋼、銅等の静電塗装を可能とする板厚２mm程
度の金属板からなる受け盤であり、例えばエンド
レス状の搬送手段２に連結されて矢印Ａ方向に循
環移動する。３，４，５は受け盤１…の移動経路
中に配設される高温、中温、低温用の各加熱炉で
あつて、受け盤１の移動方向Ａに向かつて、高温
加熱炉３、中温加熱炉４、低温加熱炉５の順に配
設される。６は高温加熱炉３と中温加熱炉４の間
に配設され、下地用の第１粉末状塗料Ｐ１を受け
盤１上の被塗装物としての板材Ｗに吹き付けるス
プレーガン等の塗料噴射装置、７は中温加熱炉４
と低温加熱炉５の間に配設され、仕上用の第２粉
末状塗料Ｐ２を受け盤１上の板材Ｗに吹き付ける
スプレーガン等の塗料噴射装置である。なお、板
材Ｗとしては、各種合板（ひのき材等の薄板をベ
ース表面に貼つたものを含む。）その他の木材の
厚板状のものである。また、下地用の粉末状塗料
Ｐ１としては、粒子が30μ〜100μ以下のポリエチ
レン樹脂製微粉末状塗料例えば商品名「アドマ
ー」（三井石油株式会社製）が使用され、仕上用
の粉末状塗料Ｐ２としては、粒子が200μ〜300μ
のポリエチレン樹脂製粉末塗料例えば商品名「ハ
イゼツクス」（三井石油株式会社製）が使用され
る。 FIG. 1 is a simplified diagram of an apparatus used in the method for coating plate materials according to the present invention. In the figure, 1... is a receiving plate made of a metal plate with a thickness of about 2 mm that enables electrostatic coating of iron, steel, copper, etc., and is connected to, for example, an endless conveying means 2 and circulates in the direction of arrow A. Moving. Numerals 3, 4, and 5 are heating furnaces for high temperature, medium temperature, and low temperature, which are arranged in the moving path of the receiving plate 1. A heating furnace 4 and a low temperature heating furnace 5 are arranged in this order. 6 is a paint injection device such as a spray gun, which is disposed between the high-temperature heating furnace 3 and the medium-temperature heating furnace 4, and sprays the first powder paint P1 for the base onto the plate material W as the object to be coated on the receiving plate 1; 7 is medium temperature heating furnace 4
This is a paint spraying device such as a spray gun, which is disposed between the low-temperature heating furnace 5 and the second powder paint P2 for finishing onto the plate material W on the receiving board 1. Note that the board material W may be a thick board of various types of plywood (including those in which a thin board of cypress wood or the like is attached to the base surface) or other wood. Further, as the base powder paint P1, a polyethylene resin fine powder paint with particles of 30 μ to 100 μ or less, such as the product name “ADMER” (manufactured by Mitsui Oil Co., Ltd.), is used, and the finishing powder paint P2 As for particles 200μ~300μ
A powder coating made of polyethylene resin, such as the product name "HIZEX" (manufactured by Mitsui Oil Co., Ltd.), is used.
次に第１図と第２図を用いて塗装方法を工程順
に説明する。まず、板材Ｗを受け盤１上に載置し
て高温加熱工程である高温加熱炉３内へ送り込
む。受け盤１及び板材Ｗは該加熱炉３内で200℃
〜250℃好ましくは220℃〜230℃の雰囲気により
高温に加熱される。 Next, the coating method will be explained step by step with reference to FIGS. 1 and 2. First, the plate material W is placed on the receiving plate 1 and sent into the high temperature heating furnace 3 which is a high temperature heating process. The receiving plate 1 and the plate material W are heated to 200℃ in the heating furnace 3.
It is heated to a high temperature by an atmosphere of ~250°C, preferably 220°C to 230°C.
次に、高温に加熱された受け盤１及び板材Ｗは
炉外の初期静電塗装工程に搬送される。該静電
塗装工程では、上記微粉末状塗料Ｐ１を塗料噴
射装置６により板材Ｗの表面８に噴射して静電塗
装を行うのであるが、この静電塗装は板材Ｗが上
記材質よりなる金属製受け盤１上にあることによ
り可能である。即ち、噴射装置６を陰極とし、受
け盤１を陽極として両者間に高電圧をかけること
により、飛散中の微粉末状塗料Ｐ１は帯電され、
板材Ｗの表面８に吸引されて目の中にまで入り込
み、融着を開始する。 Next, the receiving plate 1 and the plate material W heated to a high temperature are transported to an initial electrostatic coating process outside the furnace. In the electrostatic coating process, the fine powder paint P1 is sprayed onto the surface 8 of the plate material W using the paint spraying device 6 to perform electrostatic coating. This is possible because it is placed on the manufacturing receiving board 1. That is, by applying a high voltage between the injection device 6 as a cathode and the receiving plate 1 as an anode, the fine powder paint P1 being scattered is charged.
It is attracted to the surface 8 of the plate material W, penetrates into the eye, and starts fusing.
次に、受け盤１及び板材Ｗは中温加熱工程で
ある中温加熱炉４に送り込まれる。受け盤１及び
板材Ｗは粉末状塗料Ｐ１の融着に必要な温度を維
持すべく該加熱炉４内で150℃〜200℃好ましくは
170℃〜180℃の中温の雰囲気により加熱される。
これにより粉末状塗料Ｐ１は完全に融着して板材
Ｗ表面８にフイルム状の下地層９を形成する。 Next, the receiving plate 1 and the plate material W are sent to a medium temperature heating furnace 4 which is a medium temperature heating process. The receiving plate 1 and the plate material W are preferably heated at 150°C to 200°C in the heating furnace 4 in order to maintain the temperature necessary for fusing the powdered paint P1.
It is heated by a medium temperature atmosphere of 170°C to 180°C.
As a result, the powdered paint P1 is completely fused to form a film-like base layer 9 on the surface 8 of the plate material W.
次に、加熱された受け盤１及び板材Ｗは炉外の
後期静電塗装工程に送られ、上記粉末状塗料Ｐ
２を塗料噴射装置７により板材Ｗの下地層９の表
面９ａに噴射して静電塗装が行われる。この場合
の静電塗装も受け盤１により可能であり、上述の
如く飛散中に帯電された粉末状塗料Ｐ２は下地層
９の表面９ａに吸引されて融着を開始する。 Next, the heated receiving plate 1 and plate material W are sent to the latter stage electrostatic coating process outside the furnace, and the powdered paint P
2 is sprayed onto the surface 9a of the base layer 9 of the plate material W by the paint sprayer 7 to perform electrostatic coating. Electrostatic coating in this case is also possible using the receiving plate 1, and the powdered paint P2 charged during scattering as described above is attracted to the surface 9a of the base layer 9 and starts to fuse.
その後、受け盤１及び板材Ｗは低温加熱工程
である低温加熱炉５に送り込まれ、粉末状塗料Ｐ
２の融着に必要な温度を維持すべく該加熱炉５内
で120℃〜150℃好ましくは130℃〜140℃の雰囲気
にて加熱される。これにより粉末状塗料Ｐ２は完
全に融着してフイルム状の仕上層１０を形成す
る。以上で塗装は完了であり、板材Ｗは炉外にお
いて受け盤１から取り出される。第３図に塗装完
了後の板材Ｗを断面図で示す。 Thereafter, the receiving plate 1 and the plate material W are sent to a low-temperature heating furnace 5 which is a low-temperature heating process, and the powdered paint P
In order to maintain the temperature necessary for fusion bonding of 2, the heating furnace 5 is heated in an atmosphere of 120°C to 150°C, preferably 130°C to 140°C. As a result, the powdered paint P2 is completely fused to form a film-like finishing layer 10. The coating is now complete, and the plate material W is taken out from the receiving plate 1 outside the furnace. FIG. 3 shows a cross-sectional view of the plate material W after painting is completed.
以上説明した塗装方法によれば、板材Ｗは高温
加熱工程にてその内部に有するエアが放散さ
れ、第１粉末状塗料Ｐ１を板材Ｗの表面８に融着
させる中温加熱工程では、高温加熱工程より
低い温度であるので、板材Ｗからエアが放散され
ることがなく、さらに、第２粉末状塗料Ｐ２を下
地層９の表面９ａに融着させる低温加熱工程で
は、中温加熱工程より低い温度であるので、形
成されている下地層９が解けたり、板材Ｗからエ
アが放散されることがない。従つて固化した下地
層９及び仕上層１０にエアーによる小気泡状の膨
らみが生じない。また、ポリエチレン樹脂からな
る粉末状塗料Ｐ２により形成された仕上層１０
は、塗装面１０ａに他の物が付着しにくく、かつ
汚れにくいといつた性質を有し、例えばコンクリ
ート打設の型枠用合板に塗装した場合にはコンク
リートから剥離し易いという利点がある。また、
上述の塗装方法はひのきやさくら、なら等の天然
木材を薄板状に積層した合板の塗装に適し、透明
塗装により素材即ち自然木の木理が生かされる。 According to the coating method described above, air contained inside the plate material W is dissipated in the high temperature heating process, and in the medium temperature heating process for fusing the first powder paint P1 to the surface 8 of the plate material W, the high temperature heating process Since the temperature is lower, air is not dissipated from the plate material W, and furthermore, in the low temperature heating process for fusing the second powder paint P2 to the surface 9a of the base layer 9, the temperature is lower than that in the medium temperature heating process. Therefore, the formed base layer 9 will not unravel and air will not be dissipated from the plate material W. Therefore, the solidified base layer 9 and finishing layer 10 are not bulged in the form of small bubbles due to air. In addition, a finishing layer 10 formed of a powder paint P2 made of polyethylene resin
has properties such that it is difficult for other substances to adhere to the painted surface 10a and is hard to stain, and has the advantage that, for example, when it is applied to plywood for formwork for concrete pouring, it is easily peeled off from the concrete. Also,
The above-mentioned coating method is suitable for coating plywood made by laminating thin sheets of natural wood such as cypress, cherry, and nara, and the transparent coating makes use of the grain of the material, that is, the natural wood.
本発明は上述の如く構成されているので、次に
記載する効果を奏する。 Since the present invention is configured as described above, it produces the effects described below.
中温加熱工程における温度は高温加熱工程
の温度より低く、低温加熱工程における温度は
中温加熱工程における温度より低いので、高温
加熱工程にて板材Ｗからエアが一旦放散された
後、中温加熱工程及び低温加熱工程で板材Ｗ
からエアが放散されることはなく、しかも低温加
熱工程で、形成されている下地層９が解けるこ
とはない。従つて、板材Ｗの表面８上に下地層９
と仕上層１０を確実に形成することができ、さら
に、下地層９及び仕上層１０にエアーが入ること
が全くなくなり、フイルムの熱転写や液状塗料に
よる塗装のように塗装面にエアーによる小突起が
発生するようなことがない。しかも、フイルムの
熱転写におけるしわが生じることもなく、全体が
均一で表面仕上がりの優れた塗装面１０ａが得ら
れる。さらに、下地層９は板材Ｗの表面８に完全
に密着して強固な接着状態となり、仕上層１０と
共に板材Ｗの表面８を確実に保護する。 The temperature in the medium-temperature heating process is lower than that in the high-temperature heating process, and the temperature in the low-temperature heating process is lower than that in the medium-temperature heating process. Plate material W in the heating process
Air is not dissipated from the base layer 9, and the formed base layer 9 does not melt during the low-temperature heating process. Therefore, a base layer 9 is formed on the surface 8 of the plate material W.
The finishing layer 10 can be reliably formed, and furthermore, air will not enter the base layer 9 and the finishing layer 10 at all, and small protrusions caused by air will not form on the painted surface as in the case of thermal transfer of film or painting with liquid paint. It never happens. Furthermore, wrinkles do not occur during thermal transfer of the film, and the coated surface 10a is uniform throughout and has an excellent surface finish. Furthermore, the base layer 9 is completely adhered to the surface 8 of the plate material W to form a strong adhesive state, and together with the finishing layer 10, the surface 8 of the plate material W is reliably protected.
第１図は本発明に係る塗装方法を実施するため
の装置の一例を示す簡略側面図、第２図は本発明
方法の一実施例を工程順に示す断面図、第３図は
塗装完了後の板材の一部を示す断面図である。
１……受け盤、８……表面、９……下地層、９
ａ……表面、１０……仕上層、Ｗ……板材、Ｐ
１，Ｐ２……粉末状塗料、……高温加熱工程、
……初期静電塗装工程、……中温加熱工程、
……後期静電塗装工程、……低温加熱工程。
Fig. 1 is a simplified side view showing an example of an apparatus for carrying out the coating method according to the present invention, Fig. 2 is a sectional view showing an example of the method of the present invention in the order of steps, and Fig. 3 is a diagram showing the process after completion of painting. It is a sectional view showing a part of plate material. 1... Receiver, 8... Surface, 9... Underlayer, 9
a... Surface, 10... Finishing layer, W... Board material, P
1, P2... powder paint,... high temperature heating process,
...Initial electrostatic coating process, ...Medium temperature heating process,
...Late electrostatic coating process, ...Low temperature heating process.
Claims (1)
物としての木製板材Ｗを載置した状態で該受け盤
１と板材Ｗを、高温加熱工程にて高温に加熱し
た後、該受け盤１と板材Ｗを初期静電塗装工程
に搬送し、該初期静電塗装工程にて第１粉末状
塗料Ｐ１を板材Ｗの表面８上に塗装し、その後、
該受け盤１と板材Ｗを中温加熱工程に搬送し、
該中温加熱工程にて該第１粉末状塗料Ｐ１を板
材Ｗの表面８に融着させるべき中温に加熱して、
該表面８上に第１粉末状塗料Ｐ１からなる下地層
９を形成し、次に、該受け盤１と板材Ｗを後期静
電塗装工程に搬送し、該後期静電塗装工程に
て第２粉末状塗料Ｐ２を該下地層９の表面９ａ上
に塗装し、その後、該受け盤１と板材Ｗを低温加
熱工程に搬送し、該低温加熱工程にて該第２
粉末状塗料Ｐ２を該下地層９の表面９ａに融着さ
せるべき低温にて加熱して、該下地層９の表面９
ａ上に第２粉末状塗料Ｐ２からなる仕上層１０を
形成することを特徴とする板材の塗装方法。1. A wooden board W as an object to be coated is placed on a metal receiving board 1 for electrostatic coating, and the receiving board 1 and the board W are heated to a high temperature in a high-temperature heating process. The board 1 and the plate material W are transported to an initial electrostatic coating process, and in the initial electrostatic coating process, the first powder paint P1 is applied onto the surface 8 of the plate material W, and then,
The receiving plate 1 and the plate material W are transported to a medium temperature heating process,
In the medium temperature heating step, the first powder paint P1 is heated to a medium temperature at which it is to be fused to the surface 8 of the plate material W,
A base layer 9 made of a first powder paint P1 is formed on the surface 8, and then the receiving plate 1 and the plate material W are transported to a later electrostatic coating process, and a second powder coating is applied in the latter electrostatic coating process. Powdered paint P2 is applied onto the surface 9a of the base layer 9, and then the receiving plate 1 and the plate material W are transported to a low temperature heating process, and the second coating is applied in the low temperature heating process.
The powdered paint P2 is heated at a low temperature to fuse it to the surface 9a of the base layer 9, and the surface 9a of the base layer 9 is heated.
A method for coating a board material, which comprises forming a finishing layer 10 made of a second powdery paint P2 on a.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22624184A JPS61103580A (en) | 1984-10-26 | 1984-10-26 | Coating process of deal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22624184A JPS61103580A (en) | 1984-10-26 | 1984-10-26 | Coating process of deal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61103580A JPS61103580A (en) | 1986-05-22 |
| JPH031073B2 true JPH031073B2 (en) | 1991-01-09 |
Family
ID=16842103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22624184A Granted JPS61103580A (en) | 1984-10-26 | 1984-10-26 | Coating process of deal |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61103580A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63107553A (en) * | 1986-10-25 | 1988-05-12 | ヤマハ株式会社 | Manufacture of sheathing article |
| JP2887677B2 (en) * | 1988-08-11 | 1999-04-26 | 株式会社日本計器製作所 | Piezo pump |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58112734A (en) * | 1981-12-26 | 1983-07-05 | 藤本 政三 | Surface treating method for woody board |
-
1984
- 1984-10-26 JP JP22624184A patent/JPS61103580A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58112734A (en) * | 1981-12-26 | 1983-07-05 | 藤本 政三 | Surface treating method for woody board |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61103580A (en) | 1986-05-22 |
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