CN100493735C - Coating technique - Google Patents
Coating technique Download PDFInfo
- Publication number
- CN100493735C CN100493735C CNB2006100013295A CN200610001329A CN100493735C CN 100493735 C CN100493735 C CN 100493735C CN B2006100013295 A CNB2006100013295 A CN B2006100013295A CN 200610001329 A CN200610001329 A CN 200610001329A CN 100493735 C CN100493735 C CN 100493735C
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- China
- Prior art keywords
- area
- coating process
- shower nozzle
- main jet
- width
- 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 - Fee Related
Links
- 238000000576 coating method Methods 0.000 title claims description 45
- 239000011248 coating agent Substances 0.000 title claims description 14
- 238000000034 method Methods 0.000 title description 4
- 239000000758 substrate Substances 0.000 claims abstract description 14
- 239000007921 spray Substances 0.000 claims abstract description 12
- 239000007788 liquid Substances 0.000 claims abstract description 9
- 238000005507 spraying Methods 0.000 abstract description 10
- 238000005516 engineering process Methods 0.000 abstract description 7
- 238000007639 printing Methods 0.000 description 13
- 230000003287 optical effect Effects 0.000 description 9
- 238000003466 welding Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000005002 finish coating Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000059 patterning Methods 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- NHDHVHZZCFYRSB-UHFFFAOYSA-N pyriproxyfen Chemical compound C=1C=CC=NC=1OC(C)COC(C=C1)=CC=C1OC1=CC=CC=C1 NHDHVHZZCFYRSB-UHFFFAOYSA-N 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
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Abstract
A spray technology for spraying liquid onto a substrate divided into the first areas and the second areas whose width is less than that of the first one includes such steps as providing multiple primary nozzles arranged along an axis and multiple secondary nozzles, moving the secondary nozzles to change their positions relative to the primary ones, and spraying liquid in the first and the second areas respectively by the primary and secondary nozzles. Its advantage is short spray time.
Description
Technical field
The invention relates to a kind of coating process, and particularly relevant for a kind of coating process that adopts many shower nozzles.
Background technology
Development rapidly along with digitlization industry, the application of wiring board (Wired Board) on digital product also more and more widely, the existence of wiring board is all arranged in mobile phone, computer and digital camera or the like product such as, we can say that therefore wiring board is full of already among the product arround our life.Wiring board is distinguished with manufacture method and is broadly divided into laminated method (laminate) and two kinds of forms of Layer increasing method (build-up), the former normally is applied to make the lower printed substrate of wiring density (PrintingWired Board, and the latter normally is applied to make the higher structure of wiring density and loads plate (package substrate) PWB).Yet, because wiring board makes no matter be that printed substrate or structure loading plate have high wiring density and the tiny feature of live width all equally towards the designer trends development of big composing and high wiring density now.
From the above, because of the purpose of wiring board is exactly in order to carry external electric parts, and then reach the purpose of current lead-through.Therefore; after completing, circuit in the circuit board the circuit in the assembling district of external electric parts must be defined out; and non-assembling district covered with one deck macromolecular material do suitable protection thereon, and this polymer material layer of making protection usefulness is welding resisting layer (Solder Mask).Traditionally, the welding resisting layer coating process of circuit board is after coating the surface of printed circuit board (PCB) with sensing optical activity printing ink, comes patterning sensing optical activity printing ink to produce patterned anti-soldering layer with the exposure and the mode of developing again.Relevant for the coating process of welding resisting layer will describe in detail as after.
Figure 1A to Fig. 1 C shows the schematic diagram of the coating process of known a kind of welding resisting layer.Please refer to Figure 1A, this known coating process is suitable for a sensing optical activity printing ink is sprayed on the circuit board 110.This known coating process comprises the following steps.At first, provide a plurality of shower nozzles 120, and these shower nozzles 120 dispose along an axis 10, and keep constant spacing between each shower nozzle 120.In addition, shower nozzle 120 has a coating width W1.In addition, circuit board 110 marks off a plurality of first areas 112 and a plurality of second areas 114, and wherein first area 112 is whole brush zone, and second area 114 is the ventral brush zone.Change speech, the width of first area 112 is the integral multiple of coating width W1, and the width of second area 114 is less than coating width W1.
Please refer to Figure 1B, move around simultaneously, sensing optical activity printing ink is coated with full each first area 112 by these shower nozzles 120.In other words, each shower nozzle 120 needs to spray back and forth simultaneously sensing optical activity printing ink to be coated with for four times expires each first area 112.At this moment, still have the still uncoated sensing optical activity printing ink in subregion (second area 114) on the circuit board 110.Though the width of each second area 114 is less than coating width W1, yet these second areas 114 still must once spray by each shower nozzle 120.
Please refer to Fig. 1 C, after with full each second area 114 of sensing optical activity printing ink spraying, so far roughly finish this known coating process.It should be noted that because the width of circuit board 110 is not the integral multiple of coating width W1, thus the ventral brush zone of circuit board 110 (second area 114) still must be extra once spraying.
Summary of the invention
The object of the present invention is to provide a kind of coating process, to reduce the spraying number of times.
For realizing above-mentioned its purpose, coating process provided by the invention is suitable for a liquid spray on a substrate, and this substrate marks off most first areas and a second area, wherein the width of this second area is less than the width of this first area respectively, and this coating process comprises:
Most main jet heads and a shower nozzle are provided, and those main jet heads dispose along a first axle;
Move this time shower nozzle, to change the relative position between this time shower nozzle and those main jet heads; And
By those main jet heads and this time shower nozzle this liquid is sprayed respectively on those first areas and this second area of this substrate.
Described coating process, wherein respectively this main jet head has a coating width, and respectively the width of this first area is the integral multiple of this coating width.
Described coating process, wherein respectively this main jet head correspond to respectively those first areas one of them.
Described coating process, wherein this time shower nozzle disposes along one second axis, and this first axle is parallel with this second axis.
Based on above-mentioned, need carry out the spraying in ventral brush zone compared to known technology, the present invention adopts portable shower nozzle to spray ventral brush zone (second area), and the main jet head whole brush zone of spraying (first area), therefore when main jet head spray printing is finished, inferior shower nozzle is when also spray printing is finished.In other words, compared to known technology, brush number required for the present invention is less.
Description of drawings
Figure 1A to Fig. 1 C shows the schematic diagram of the coating process of known a kind of welding resisting layer.
Fig. 2 A to Fig. 2 C shows the schematic diagram according to a kind of coating process of one embodiment of the invention.
The specific embodiment
For above and other objects of the present invention, feature and advantage can be become apparent, preferred embodiment cited below particularly, and conjunction with figs. are described in detail below.
Fig. 2 A to Fig. 2 C shows the schematic diagram according to a kind of coating process of one embodiment of the invention.Please refer to Fig. 2 A, the coating process of present embodiment is suitable for a sensing optical activity printing ink is sprayed on the substrate 210, and wherein substrate 210 for example is a circuit board, and liquid for example is sensing optical activity printing ink or liquid photoresistance.Though present embodiment is that example describes with the coating process in the circuit board technology, yet the coating process that present embodiment proposed can be applied to the coating process of other technical field.In addition, substrate 210 marks off a plurality of first areas 212 and a second area 214, and wherein the width of second area 214 is less than the width of each first area 212.
From the above, the coating process of present embodiment comprises the following steps.At first, provide a plurality of main jet head 220a and a shower nozzle 220b, wherein these main jet heads 220a is along a first axle 22 configurations.In the present embodiment, inferior shower nozzle 220b is along 24 configurations of one second axis, and first axle 22 is parallel with second axis 24.Yet in another embodiment, inferior shower nozzle 220b also can be along first axle 22 configurations.In addition, main jet head 220a has a coating width W2, and the width of each first area 212 is the integral multiple of coating width W2.In other words, just whole brush zone, first area 212, and second area 214 ventral brush zone just.
Then, move time shower nozzle 220b, to change the relative position between time shower nozzle 220b and these main jet heads 220a.Briefly, each main jet head 220a correspond to respectively these first areas 212 one of them, and inferior shower nozzle 220b corresponds to second area 214.In the present embodiment, main jet head 220a also can be fixed or packaged type.
Please refer to Fig. 2 B, move around twice in the time of by these main jet heads 220a and inferior shower nozzle 220b, on these first areas 212 and second area 214 of liquid being sprayed substrate 210 respectively.At this moment, second area 214 has been finished coating, and still there is uncoated part each first area 212.
Please refer to Fig. 2 C, then, 220a moves around twice by these main jet heads, is coated with full with the remainder with each first area 212.So far, roughly finish the coating process of present embodiment.
Because present embodiment adopts portable shower nozzle 220b to spray second area 214 (ventral brush zone), and main jet head 220a spraying first area 212 (whole brush zone), therefore when main jet head 220a spray printing is finished, inferior shower nozzle 220b is when also spray printing is finished.More specifically, need five sprayings just can finish coating process compared to known technology, present embodiment only needs four sprayings just can finish coating process, so the required brush number of present embodiment is less, with the reduction required time of coating process.In addition, when resolution ratio was high more, the brush number that present embodiment can be saved just the more.
Though the present invention describes as above with preferred embodiment; right its is not in order to limit the present invention; anyly have the knack of this technology personage; without departing from the spirit and scope of the present invention; when can doing a little change and retouching, so protection scope of the present invention is as the criterion when looking the scope that claim defines.
Claims (3)
1. a coating process is suitable for a liquid spray on a substrate, and this substrate marks off most first areas and a second area, and wherein the width of this second area is less than the width of this first area respectively, and this coating process comprises:
Most main jet heads and a shower nozzle are provided, and those main jet heads dispose along a first axle, and wherein respectively this main jet head has a coating width, and respectively the width of this first area is the integral multiple of this coating width;
Move this time shower nozzle, to change the relative position between this time shower nozzle and those main jet heads; And
By those main jet heads and this time shower nozzle this liquid is sprayed respectively on those first areas and this second area of this substrate.
2. coating process as claimed in claim 1 is characterized in that, wherein respectively this main jet head correspond to respectively those first areas one of them.
3. coating process as claimed in claim 1 is characterized in that, wherein this time shower nozzle disposes along one second axis, and this first axle is parallel with this second axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100013295A CN100493735C (en) | 2006-01-17 | 2006-01-17 | Coating technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100013295A CN100493735C (en) | 2006-01-17 | 2006-01-17 | Coating technique |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101003036A CN101003036A (en) | 2007-07-25 |
| CN100493735C true CN100493735C (en) | 2009-06-03 |
Family
ID=38702546
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100013295A Expired - Fee Related CN100493735C (en) | 2006-01-17 | 2006-01-17 | Coating technique |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100493735C (en) |
-
2006
- 2006-01-17 CN CNB2006100013295A patent/CN100493735C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN101003036A (en) | 2007-07-25 |
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090603 |
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| CF01 | Termination of patent right due to non-payment of annual fee |