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How PCBs are made - Printed Wiring Technologies Limited (PWT)


 Front End PCB Design Data Processing & Checking  - Pre Production

1. Front End department

- customers data is prepared for manufacture, design rules are checked for manufacturability. click to enlarge

 
 Onsite Laser photoplotter speeds up prototyping

2. Barco Laser photoplotter

- by having photoplotting facilities in house allows prototype PCBs to be started immediately.

 
 Stocks of Raw PCB Laminate Material in various sizes allows quick turn round of orders.

3. PCB Laminate store

- well stocked to be able to fabricate any build on a quick turnaround.

 
 The drill head of an Automatic Printed Circuit Board Drilling Machine at PWT

4. PCB State of the art drilling machines

- for accuracy and speed on prototype PCBs. Autoload facility for overnight drilling on larger production batches of PCBs, and general purpose machines for flexibility.

One of a number of drilling machines at PWTAutoloading Casettes for an Automatic drilling machine at PWT
 
 Automatic Optical PCB Inspection

5. A.O.I. - Automatic Optical Inspection

- to ensure compliance with customer supplied data.

X-Ray tooling and registration system at PWT
 
 Circubond surface preparation line for Printed Circuit Boards

6. Multilayer PCB surface preparation line

- for multilayer inner layers prior to bonding.

 
 Bonding Press for Multilayer PCBs at PWT

7. Bonding Press - for multilayer bonding

- capable of bonding 378 production panels per day.

 
 Desmear line for PCBs at PWT

8. Desmear line

- for removing resin smears from multilayer drilled holes on PCBs.

 
 Through hole PCB plating line

9. PTH PCB plating low-build electroless copper lines

- for through hole plating.

 
 Film Laminator

10. Film lamination

- white light sensitive lamination film for image transfer.

 
 Supercool exposure frame on left

11. Cirgraphics supercool exposure frame

- fully tooled to accurately line up with master-artworks, Ensuring repeatability and accuracy.

 
 PCBs suspended in copper / tin lead plating line at PWT

12. Copper/tin pattern-plating line

 
 Processing Circuit Boards to remove plating resist and waste copper at PWT

13. Etch line

- for removing laminated plating resist and waste copper.

 
 A Screen Printer at PWT

14. Semi-automatic - screen printing machine

- for solder resist application.

 
 Hot Air Levelling machine and processing lines at PWT

15. Cemco Quicksilver Hot Air Solder Levelling machine

- with conveyorised pre-clean, fluxer and stacker.

 
 A fast set-up manual screen printer at PWT

16. Manual legend-silk screen printing.

 
 Triple Spindle routing profile machine

17. 3 spindle Vero CNC rout/profile machine.

 
 Automated PCB Continuity test rig, see probes.

18. EMMA Moving probe test systems

- all pcb's supplied by PWT are 100% electrically tested.

Automated PCB Continuity test rig, see probes.
 
 100% Final PCB inspection

19. Final Inspection department

- all products are 100% visually inspected to ensure compliance to specification.

 


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