PWM Series – PCB Wet-Chemical R2R Desmear
Roll-to-Roll (2R) desmear machines of the PWM Series completely remove smear in the holes resulting from drilling and roughening. Our desmear equipment comprises following process steps: winding and unwinding, swelling, rinsing, desmear, pre-neutralizing and neutralizing, as well as drying. The PWM Series is well combinable with plating through-hole processes.
FEATURES
- Very good process results for through-holes and blind holes
- Excellent Mn6+ activation
- No dirt or residual chemicals after wet-cleaning
- High conveying stability with deviation of only ± 10 mm (with width control device)
- Equipped with automatic control system to guarantee stable process parameters
- Single-track or double-track conveyor can be selected according to production capacity and process requirements
ADVANTAGES
- Modularized design: tension or dancer rollers can be selected according to the process requirements to prevent deforming
- Robust body structure to maintain parallel position of rollers during long-term operation
- Superior Edge Position Control (EPC) to ensure even and straight rolling
- Excellent design of residue filter unit to minimize film residue leftover
- Sloped-bottom and small-volume tanks for rinsing processes to improve tank turnover rate by 50 %
TECHNICAL DATA
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Specifications of substrates: |
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Panel width: |
250 - 600 mm (can be customized for different sizes) |
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Panel thickness: |
12.5 μm - 25 μm or thicker. |
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Dia. of through-hole: |
min. 0.1 mm A/R 10:1 |
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Dia. of blind hole: |
min. 0.075 mm A/R 1:1 |
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R2R performance: |
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Normal operating time (uptime): |
≥ 95 % |
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Mean repair time (MTTR): |
4 h |
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EPC permissible edge alignment: |
± 0.5 mm |
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Low-tension control: |
5 N - 30 N |
Additional data available on request.