Manufacturing method for single face windowing hole plugging of tin spayed plate
A manufacturing method and technology of plugging holes, applied in the direction of electrical connection formation of printed components, etc., can solve problems such as hidden tin, and achieve the effect of avoiding hidden tin beads
Active Publication Date: 2013-09-25
DONGGUAN SHENGYI ELECTRONICS
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Problems solved by technology
Among them, when making HASL, the plug hole method is required to be a single-sided window plug hole. When the existing solder mask process is used for production, the plug hole position is prone to quality defects such as hidden tin after HASL. The tin plate with such a design needs to be improved by a new method
Method used
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Embodiment Construction
[0018] Such as figure 1 As shown, the method for making a window plug hole on one side of a tin plate of the present invention comprises the following steps:
[0019] Step 1: Provide a PCB board to be tinned, and the PCB board is provided with a through hole to be opened on one side for plugging;
[0020] Step 2: Make solder resist on the PCB board, the process is as follows: screen printing ink → first pre-baking → first exposure → first development → first post-baking, spray tin on the PCB board after the solder mask is made deal with;
[0021] Step 3: After the tin spraying treatment, use solder resist to plug the through holes on the PCB to be opened on one side and plug the holes. When the through holes are plugged, the holes are plugged by silk screen, and the holes are plugged as follows Processing: second pre-baking → second exposure → second development → second post-baking, so that the solder resist in the through holes is cured and a single-sided window is formed....
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The invention relates to a manufacturing method for single face windowing hole plugging of a tin spayed plate, and the method comprises the following steps: 1, providing a PCB (Printed Circuit Board) to be sprayed with tin, wherein the PCB is provided with through holes for single face windowing hole plugging; 2, performing soldering resistance on the PCB, wherein the process comprises screen printing ink, primary pre-baking, primary exposure, primary development and primary post-baking, and then spraying tin to the PCB after soldering resistance; and 3, plugging the through holes for single face windowing hole plugging on the PCB by using a solder resist after tin spraying, plugging the holes by screen printing while plugging the through holes, and after hole plugging, performing secondary pre-baking, secondary exposure, secondary development and secondary post-baking, thereby curing the solder resist in the through holes and forming single face windowing. The manufacturing method for single face windowing hole plugging of the tin spayed plate provided by the invention provides an independent hole plugging process aiming at single face windowing hole plugging of the tin spayed plate, thus preventing tin beading hiding after tin spraying effectively.
Description
technical field [0001] The invention relates to the field of manufacturing printed circuit boards (Printed Circuit Board, PCB), in particular to a method for manufacturing a tin-sprayed board with windows and plug holes on one side. Background technique [0002] PCB boards can be divided into gold-plated boards, copper-protected boards (OSP boards), silver-coated boards, gold-coated boards, tin-coated boards, and tin-plated boards according to the way the bare copper on the surface is treated in the finished product. Among them, when making HASL, the plug hole method is required to be a single-sided window plug hole. When the existing solder mask process is used for production, the plug hole position is prone to quality defects such as hidden tin after HASL. The tin plate with such design needs to be improved by new methods. Contents of the invention [0003] Therefore, the object of the present invention is to provide a method for making plug holes with windows on one si...
Claims
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IPC IPC(8): H05K3/40
Inventor 邢玉伟易雁曾红曾志军
Owner DONGGUAN SHENGYI ELECTRONICS