CN107670927A - MDF plate surface electrostatic powder spraying curing process - Google Patents
MDF plate surface electrostatic powder spraying curing process Download PDFInfo
- Publication number
- CN107670927A CN107670927A CN201610616733.7A CN201610616733A CN107670927A CN 107670927 A CN107670927 A CN 107670927A CN 201610616733 A CN201610616733 A CN 201610616733A CN 107670927 A CN107670927 A CN 107670927A
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- China
- Prior art keywords
- mdf
- embryo materials
- heating
- water smoke
- powder spraying
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/02—Processes for applying liquids or other fluent materials performed by spraying
- B05D1/08—Flame spraying
- B05D1/10—Applying particulate materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/06—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to radiation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/06—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to radiation
- B05D3/061—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to radiation using U.V.
- B05D3/065—After-treatment
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The invention discloses a kind of MDF plate surfaces electrostatic powder spraying curing process, including the processing of surface pretreatment, water smoke, powder spray and each step that is heating and curing, the water smoke processing includes：Water smoke is formed in closing space, the MDF embryo materials after surface pretreatment are positioned under the water smoke environment in the closing space, moisture film is produced on the surface of the MDF embryo materials, so that the surface of the MDF embryo materials produces charged ion, and produces conductive characteristic.Advantages of the present invention at least that：The present invention is handled using water smoke, is produced moisture film on the surface of MDF embryo materials, so that the surface of the MDF embryo materials produces charged ion, and is produced conductive characteristic, in this way, need not be preheated, is directly sprayed by top layer conductive, technique is simple, and speed of production is improved.
Description
Technical field
The present invention relates to electrostatic powder coating technical field, more particularly, to MDF plate surface electrostatic powder spraying curing process.
Background technology
With the enhancing of environmental consciousness and perfecting for environmental regulation, traditional solvent-borne coating is increasingly restricted because of the use containing VOC VOC and hazardous air pollutants, and powder paint can be assigned by the good resistance to marring of painting ground and pollution resistance, there is provided the incrustation outward appearance of a variety of colors and effect.MDF powder coating and their application has the advantages that non-volatility organic emission, efficiency high, coating machinery performance are good because its synthesis painting cost is lower with press mold than the spray painting of traditional coating process, by as the main flow of MDF applications from now on.
Compared with other decorating films and film, powder coat is not easy to be destroyed powder coating and their application MDF, and the workpiece after application does not need coating typically, and workpiece rework rate is low, saves cost
；Powdery paints has excellent adhesive force, hardness, impact resistance, wearability and chemical-resistant；Powdery paints provides greater flexibility for the design of MDF shapes, is suitable for the coating of the irregular shapes such as curved surface, and application product can realize that edge is seamless
；Powdery paints solvent-free generation in spraying and baking, reduce environmental pollution；The powder recoverable of spray is crossed, technological operation is simple, and utilization rate is high；It can obtain the decorative effect of different colours, gloss, lines；Spray efficiency is high, saves the energy.
Common MDF sheet material powder coating and their application method general principles are at present：First, the surface conductance of MDF sheet materials is made by preheating, then, the MDF sheet materials absorption powder with conducting function forms bisque, finally, infrared heating solidification.However, the problem of prior art is present is as follows：
1）Procedure is complicated：Such as pre-treatment needs to heat, and the surface of MDF sheet materials can produce stomata during heating, poorly sealed, it may appear that lateral dehiscence, fraction defective is high, and spray area is limited, thus is not suitable for large-scale production；
2）Process aspect:Pre- thermal conducting must allow sheet material to contain a certain amount of moisture, if water content is excessive, steam during follow-up infrared curing can be caused to emerge, and produce stomata, poorly sealed；If water content is very few, the effect of pre- thermal conducting is unable to reach；
3）Equipment aspect：Pre-treatment is difficult to control, and preheating is whard to control, and infrared heating furnace temperature is difficult to control.
The content of the invention
In order to solve the above technical problems, it is an object of the invention to provide a kind of MDF plate surfaces electrostatic powder spraying curing process, the deficiencies in the prior art are overcome.
To reach above-mentioned purpose, technical scheme is as follows：
A kind of MDF plate surfaces electrostatic powder spraying curing process, including the processing of surface pretreatment, water smoke, powder spray and each step that is heating and curing,
The water smoke processing includes：Water smoke is formed in closing space, the MDF embryo materials after surface pretreatment are positioned under the water smoke environment in the closing space, moisture film is produced on the surface of the MDF embryo materials, so that the surface of the MDF embryo materials produces charged ion, and produces conductive characteristic.
Preferably, it is described to be heating and curing including infrared heating photocuring, the infrared heating photocuring is MDF embryo materials successively heating through flat section of superfusing, solidification section, lasting solidification section in infrared heating furnace after powder spray, makes bisque levelling and the solidification on the MDF embryo materials surface.
Further, the air themperature for melting flat section is arranged to 220-230 degree, and the duration is 45 seconds, and the temperature setting of the solidification section is 170-190 degree, and the duration is 150 seconds, and the temperature setting of the lasting solidification section is 120-150 degree, and the duration is 60 seconds.
Preferably, described be heating and curing also includes ultraviolet heating photocuring, and the ultraviolet heating photocuring is that the MDF embryo materials after infrared heating photocuring heat in ultraviolet heating furnace, solidifies the bisque on the MDF embryo materials surface.
Further, the air themperature in the ultraviolet heating furnace is arranged to 220-230 degree, and the duration is 45 seconds.
Preferably, the surface pretreatment includes：First, by MDF embryo materials after microwave drying, it is 5-7% to make its moisture content, then 0.3mm priming paint is coated on MDF embryo materials after the drying, finally carries out grinding process to the surface of the MDF embryo materials coated with priming paint.
Preferably, the powder spray includes：MDF embryo materials after water smoke processing processing are positioned in automatic powder spraying room, the MDF embryo materials of charged ion adsorb in its surface with making powder particle automatic uniform, so as to form bisque in its surface.
By above technical scheme, advantages of the present invention at least that：
1）The present invention is handled using water smoke, is produced moisture film on the surface of MDF embryo materials, so that the surface of the MDF embryo materials produces charged ion, and is produced conductive characteristic, in this way, need not be preheated, is directly sprayed by top layer conductive, technique is simple, and speed of production is improved.
2）It is heating and curing and uses two stages：Infrared heating photocuring and ultraviolet heating photocuring, the infrared heating photocuring of use ensure the temperature equalization in certain space so that product appearance is good；The ultraviolet heating photocuring used is still in the market vacancy technology, solidifies quickly the bisque on MDF embryo materials surface for high drying process.The present invention uses infrared heating photocuring and ultraviolet heating photocuring, and the color of product and kind can be made more diversified.
3）Surface pretreatment can carry out accelerated surface processing using primary coat microwave drying process, and compared to traditional processing mode, speed can improve 10 times, and can save for 90% time.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, the required accompanying drawing used is briefly described in being described below to embodiment.
Fig. 1 is the workflow diagram of disclosed MDF plate surfaces electrostatic powder spraying curing process described in the embodiment of the present invention 1；
Fig. 2 is the workflow diagram of disclosed MDF plate surfaces electrostatic powder spraying curing process described in the embodiment of the present invention 2.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described.
It should be clear that powdery paints is divided into infrared curing powdery paints and UV-curable powder coatings, the present invention separately designs a process for two kinds of powdery paints.Embodiment 1 is the MDF plate surface electrostatic powder spraying curing process of the infrared curing powdery paints used, and embodiment 2 is the MDF plate surface electrostatic powder spraying curing process of the UV-curable powder coatings used.
Embodiment 1：
A kind of MDF plate surfaces electrostatic powder spraying curing process shown in Figure 1, including surface pretreatment, water smoke processing, powder spray and each step that is heating and curing successively implemented successively, are heating and curing including infrared heating photocuring；
Wherein, surface pretreatment comprises the following steps：First, by MDF embryo materials after microwave drying, it is 5-7% to make its moisture content, then 0.3mm priming paint is coated on MDF embryo materials after the drying, finally carries out grinding process to the surface of the MDF embryo materials coated with priming paint.
Water smoke processing includes：Water smoke is formed in closing space, water smoke device water spray in closing space can be used, MDF embryo materials after surface pretreatment are positioned under the water smoke environment in the closing space, so as to produce moisture film on the surface of the MDF embryo materials, and then the surface of the MDF embryo materials is produced charged ion, and produce conductive characteristic.
Powder spray includes：MDF embryo materials after water smoke processing processing are positioned in automatic powder spraying room, the MDF embryo materials of charged ion adsorb in its surface with making powder particle automatic uniform, so as to form bisque in its surface.
Infrared heating photocuring is：MDF embryo materials successively heating through flat section of superfusing, solidification section, lasting solidification section in infrared heating furnace after powder spray, make the bisque levelling on the MDF embryo materials surface.
Wherein, the air themperature for melting flat section is arranged to 220-230 degree, and the duration is 45 seconds, and the temperature setting for solidifying section is 170-190 degree, and the duration is 150 seconds, and the lasting temperature setting for solidifying section is 120-150 degree, and the duration is 60 seconds.
In summary, advantages of the present invention at least that：
1）The present invention is handled using water smoke, is produced moisture film on the surface of MDF embryo materials, so that the surface of the MDF embryo materials produces charged ion, and is produced conductive characteristic, in this way, need not be preheated, is directly sprayed by top layer conductive, technique is simple, and speed of production is improved.
2）Surface pretreatment can carry out accelerated surface processing using primary coat microwave drying process, and compared to traditional processing mode, speed can improve 10 times, and can save for 90% time.
A kind of MDF plate surfaces electrostatic powder spraying curing process shown in Figure 2, including surface pretreatment, water smoke processing, powder spray and each step that is heating and curing successively implemented successively, be heating and curing infrared heating photocuring and ultraviolet heating photocuring including successively implementing successively；The difference of embodiment 2 and embodiment 1 is：The infrared heating photocuring being heating and curing including successively implementing successively of embodiment 2 and ultraviolet heating photocuring, and surface pretreatment, water smoke are handled, the embodiment of powder spray is same as Example 1, here is omitted.UV-curable powder coatings only by infrared heating photocuring by that can not solidify, it is also necessary to by that could solidify after ultraviolet heating photocuring.Being heating and curing for embodiment 2 is specifically described below.
Infrared heating photocuring is：MDF embryo materials successively heating through flat section of superfusing, solidification section, lasting solidification section in infrared heating furnace after powder spray, make the bisque levelling on the MDF embryo materials surface.
Wherein, the air themperature for melting flat section is arranged to 220-230 degree, and the duration is 45 seconds, and the temperature setting for solidifying section is 170-190 degree, and the duration is 150 seconds, and the lasting temperature setting for solidifying section is 120-150 degree, and the duration is 60 seconds.
Ultraviolet heating photocuring is that the MDF embryo materials after infrared heating photocuring heat in ultraviolet heating furnace, solidifies the bisque on the MDF embryo materials surface.
Wherein, the air themperature in ultraviolet heating furnace is arranged to 220-230 degree, and the duration is 45 seconds.
In summary, advantages of the present invention at least that：
1）The present invention is handled using water smoke, is produced moisture film on the surface of MDF embryo materials, so that the surface of the MDF embryo materials produces charged ion, and is produced conductive characteristic, in this way, need not be preheated, is directly sprayed by top layer conductive, technique is simple, and speed of production is improved.
2）It is heating and curing and uses two stages：Infrared heating photocuring and ultraviolet heating photocuring, the infrared heating photocuring of use ensure the temperature equalization in certain space so that product appearance is good；The ultraviolet heating photocuring used is still in the market vacancy technology, solidifies quickly the bisque on MDF embryo materials surface for high drying process.The present invention uses infrared heating photocuring and ultraviolet heating photocuring, and the color of product and kind can be made more diversified.
3）Surface pretreatment can carry out accelerated surface processing using primary coat microwave drying process, and compared to traditional processing mode, speed can improve 10 times, and can save for 90% time.
A variety of modifications to these embodiments be will be apparent for those skilled in the art, and generic principles defined herein can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, the present invention is not intended to be limited to the embodiments shown herein, and is to fit to the most wide scope consistent with principles disclosed herein and features of novelty.
Claims (7)
- A kind of 1. MDF plate surfaces electrostatic powder spraying curing process, it is characterised in that including surface pretreatment, water smoke processing, powder spray and each step that is heating and curing,The water smoke processing includes：Water smoke is formed in closing space, the MDF embryo materials after surface pretreatment are positioned under the water smoke environment in the closing space, moisture film is produced on the surface of the MDF embryo materials, so that the surface of the MDF embryo materials produces charged ion, and produces conductive characteristic.
- 2. MDF plate surfaces electrostatic powder spraying curing process according to claim 1, it is characterized in that, it is described to be heating and curing including infrared heating photocuring, the infrared heating photocuring is MDF embryo materials successively heating through flat section of superfusing, solidification section, lasting solidification section in infrared heating furnace after powder spray, makes bisque levelling and the solidification on the MDF embryo materials surface.
- 3. MDF plate surfaces electrostatic powder spraying curing process according to claim 2, it is characterized in that, the air themperature for melting flat section is arranged to 220-230 degree, duration is 45 seconds, the temperature setting of the solidification section is 170-190 degree, duration is 150 seconds, and the temperature setting of the lasting solidification section is 120-150 degree, and the duration is 60 seconds.
- 4. MDF plate surfaces electrostatic powder spraying curing process according to claim 2, it is characterized in that, described be heating and curing also includes ultraviolet heating photocuring, the ultraviolet heating photocuring is that the MDF embryo materials after infrared heating photocuring heat in ultraviolet heating furnace, solidifies the bisque on the MDF embryo materials surface.
- 5. MDF plate surfaces electrostatic powder spraying curing process according to claim 4, it is characterised in that the air themperature in the ultraviolet heating furnace is arranged to 220-230 degree, and the duration is 45 seconds.
- 6. MDF plate surfaces electrostatic powder spraying curing process according to claim 1, it is characterised in that the surface pretreatment includes：First, by MDF embryo materials after microwave drying, it is 5-7% to make its moisture content, then 0.3mm priming paint is coated on MDF embryo materials after the drying, finally carries out grinding process to the surface of the MDF embryo materials coated with priming paint.
- 7. MDF plate surfaces electrostatic powder spraying curing process according to claim 1, it is characterised in that the powder spray includes：MDF embryo materials after water smoke processing processing are positioned in automatic powder spraying room, the MDF embryo materials of charged ion adsorb in its surface with making powder particle automatic uniform, so as to form bisque in its surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610616733.7A CN107670927A (en) | 2016-08-01 | 2016-08-01 | MDF plate surface electrostatic powder spraying curing process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610616733.7A CN107670927A (en) | 2016-08-01 | 2016-08-01 | MDF plate surface electrostatic powder spraying curing process |
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| CN107670927A true CN107670927A (en) | 2018-02-09 |
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| CN201610616733.7A Pending CN107670927A (en) | 2016-08-01 | 2016-08-01 | MDF plate surface electrostatic powder spraying curing process |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5824373A (en) * | 1994-04-20 | 1998-10-20 | Herbert's Powder Coatings, Inc. | Radiation curing of powder coatings on wood |
| CN104162493A (en) * | 2014-08-25 | 2014-11-26 | 嘉兴市京禾节能科技有限公司 | Device for spraying UV onto bags and suitcases to produce whole sets |
| CN104492670A (en) * | 2014-12-31 | 2015-04-08 | 山东朗法博粉末涂装科技有限公司 | Medium density fiberboard powder spraying process |
| CN104903008A (en) * | 2012-11-13 | 2015-09-09 | 意大利Itt有限责任公司 | Powder coating (electrostatic painting) method and plant for non electrically conductive elements, and in particular brake pads |
| CN105396766A (en) * | 2015-12-17 | 2016-03-16 | 滁州市友邦涂装有限公司 | Electrostatic powder spraying curing process |
-
2016
- 2016-08-01 CN CN201610616733.7A patent/CN107670927A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5824373A (en) * | 1994-04-20 | 1998-10-20 | Herbert's Powder Coatings, Inc. | Radiation curing of powder coatings on wood |
| CN104903008A (en) * | 2012-11-13 | 2015-09-09 | 意大利Itt有限责任公司 | Powder coating (electrostatic painting) method and plant for non electrically conductive elements, and in particular brake pads |
| CN104162493A (en) * | 2014-08-25 | 2014-11-26 | 嘉兴市京禾节能科技有限公司 | Device for spraying UV onto bags and suitcases to produce whole sets |
| CN104492670A (en) * | 2014-12-31 | 2015-04-08 | 山东朗法博粉末涂装科技有限公司 | Medium density fiberboard powder spraying process |
| CN105396766A (en) * | 2015-12-17 | 2016-03-16 | 滁州市友邦涂装有限公司 | Electrostatic powder spraying curing process |
Non-Patent Citations (1)
| Title |
|---|
| 冯立明等: "《涂装工艺与设备》", 31 July 2004 * |
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Application publication date: 20180209 |