| Powder paint in the coil coating application prospect |
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For the coil coating, powder coating has been an important potential appeal. It is frequently used in liquid organic coatings and water-based paint, but when they attempted to apply to new areas of the market, encountered many unfavorable factors.
Market advantage
The use of liquid coating is one of the adverse factors, coating thickness of not greater than 1 mils ( 1/1000 inch, equivalent to 0.001 " or 0.0025mm ), here does not include PVC materials. As for the coil coating, household washing market particularly attractive, because it is suitable for the production of 2 mils thickness of material, while having a uniform quality, good appearance, nonlinear coating structure. From the coil coating machine casing and the rotary drum of the two parts of the structure, has proved to be coated packaging material coating effect is not complete.
For precise coating, using a liquid coating is very difficult. For example, the consumer electronics such as DVD, VCR and satellite control equipment box and so on, is typically requires precise structure coating field. In a membrane production line can get some more elaborate structure, but due to the presence of high field nonconformity levels, the coating machine and processing equipment of the relationship between the level of strain at. By the use of the coating is sometimes appropriate, but normal processing and material changes will usually produce than conventional level higher failure rate, it whether it is for consumers and for suppliers, have hindered the product into a profitable product.
For the above applications, powder coating can be used to meet the requirements. The use of powder coating has the uniformity and the use of simple features. But for using liquid membrane coating can’t seem to produce qualified products in the most complex coil coating machine, it may become more important.
Through most of the powder coating production line of sheet are simple to understand, can be seen in many applications, powder coating machine facing material from the roll coating machine competition, competitive weakened; this is because when the configuration of the coil coating machine, it has more investment effect and better technical resources.
Environmental advantages
For the majority of the coil coating machine, it is due to the coil coating has a larger market space and a larger number of potential customers characteristics, which are sufficient to stimulate their capacity expansion. But the use of powder coating advantages still exist. Every country and every coil coating machine every year to spend a large amount of cost, to meet the requirements of environmental protection. Actual expenditure as a percentage of sales percentage can be different from area to area; but the same, the number continued to grow faster than revenue growth rate. So you can see their business scale could not continue forever, this usually leads to profits shrink. A bad news is that such spending trend is actually not over, but a good news is now seen in powder coatings.
Solvent type coating or aqueous coating processing and the use of high cost. Solvent evaporation process and coating curing role has become equally expensive, in essence it will not increase the final surface performance. Processing actually detracts from the surface properties, many of which surface defects are directly related with the solvent evaporation. Reduction of organic compounds, VOC generated in an oven and incineration device using natural gas, solid and liquid paint coating removal process and so on, all these are examples of additional cost, therefore the coil coating machine in the daily application study is becoming attractive.
On the other hand, powder coating is a 100% solids, usually does not contain the harmful material, can effectively reduce a lot of coil coating machine is often incidental environmental expenditure. Powder coatings in addition to reduce environmental costs, but also can reduce the operation cost of coating machine. In addition to those with the most modern, as well as the most technologically advanced oven coating machine, coating machine for removing most of coating solvent consumption and natural gas accounts for only the total gas consumption 1~3%. They then even need to generate hydrocarbons by combustion method. When the powder coating is a 100% solvent free solid, this also reduces the cost.
Coil end using liquid organic coatings the approaching era
This sounds like a low risk prediction, but many people wonder why the day is coming.
Cost is a reason. As mentioned before that, typically a large number of coated coil is conducted through shipping, its ply is in commonly 0.5~1.0 mils ( 1/1000 inch ). In spite of the powder coatings made many improvements, but for coating moving, meet market appearance requires a metal membrane, is still difficult to obtain thickness less than 1.5~2.0 mils ( 1/1000 inches) between materials. The use of coil coating machine can be expected, good access to all save the cost of the materials, but then will find the material cost is much higher than the use of liquid paint.
Quality is another reason. Although it has been proven that powder coating is not only used to meet some fascinating texture and color of the market demand; but in the majority of users demand less attractive white color, or almond texture surface coil coating materials market, powder coatings are less successful. These problems include the coating on the web width direction on the thickness distribution problems still exist. Although in some areas, for example in elasticity and luster properties of control have made a lot of success. A liquid paint problems, people in many years ago has been resolved, and powder coating problems still exist. So the liquid coating it is not very near the end of. |
| release time:2014/1/2 |
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