Process for making resin plug holes
date：2018-11-02 10:53:00
Process for making resin plug holes:
Production process
The three types of resin plug holes described above have different processes, as follows:
POFV type products (the process of different factories is different)
1. Cutting material à drilling → PTH / plating → plug hole → baking → grinding → PTH / plating → outer layer → anti-welding → surface treatment à forming à electric test à FQCà shipment
2, cutting material à drilling à immersion copper à plate electricity à plate electricity (thick copper) à resin plug hole à grinding à drill through hole à sink copper à plate electricity à outer layer à graphic plating à etching à resistance welding à Surface treatment à molding à electric measurement à FQCà shipment
Inner layer HDI resin plug type products (two processes: grinding and non-grinding)
Grinding process:
1. Cutting material à buried hole inner layer pattern à AOIà pressing à drilling → PTH / plating → plug hole → baking → grinding → inner layer line → browning → pressing → drilling (laser drilling / mechanical drilling) →PTH/Electroplating→Outer circuit àAnti-weld àsurface treatment àFormation àElectrical measurement àFQCà shipment
2, the material à buried hole inner layer graphics à AOIà pressure à drilling à sink copper à plate electricity à plate electricity (thick copper) à resin plug hole à polished à inner layer graphics à AOIà pressure à drill through hole à sink copper à plate electricity à outer layer graphics à graphics plating à etching à resistance welding à surface treatment à molding à electric measurement à FQCà shipment
No need to grind: open material à buried hole inner layer pattern à AOIà press à drilling → PTH / plating → inner layer line → browning → plug hole → flattening → baking → pressing → drilling (laser drilling / machinery Drilling)→PTH/electroplating→outer circuit→àresistive welding àsurface treatment àforming àelectric measurement àFQCà shipment
3 outer hole through hole resin plug type
1. Cutting material à drilling → PTH / plating → plug hole → baking → grinding → baking → outer layer line → anti-welding → surface treatment à forming à electric test à FQCà shipment
2, cutting material à drilling à sinking copper à plate electricity à plate electricity (thick copper) à resin plug hole à baking → grinding → baking à outer layer à graphic plating à etching à resistance welding à surface treatment à forming à electric test àFQCà shipment
Special place in the process
l. From the above process, we clearly found that the process is different. Generally speaking, our understanding is that the “resin plug hole” is followed by the “drilling through hole and copper sink” process, which we all consider to be POFV products; if the “resin plug hole” is followed by the “process” "Layer pattern", we think it is the inner layer HDI resin plug product; if the "resin plug hole" is followed by the "outer pattern";
l, the above different types of products are strictly defined in the process, can not go wrong; Keding Chemical developed three different inks for the characteristics of the above three processes, TP-2900S\TP-2900\TP-2900C These three inks correspond to the above three processes.
3 Process improvement
A. For products with resin plug holes, in order to improve the quality of the products, people are constantly adjusting the process to simplify his production process and improve the yield of its production;
B. Especially for the product of the inner layer HDI plug hole, in order to reduce the scrap rate of the inner layer open circuit after grinding, people adopt the process of re-plugging the hole after the line is made, first complete the inner layer circuit production, after the resin plug hole The resin is pre-cured and then cured at a high temperature in the press-bonding stage.
C. At the beginning, for the inner layer HDI plug hole, people use UV pre-solid + thermosetting ink. At present, more often use thermosetting resin, which effectively improves the inner layer HDI resin. Thermal performance of the plug hole.
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