PCB Dry Process Equipment: Core Support for Circuit Board Manufacturing

In the manufacturing process of printed circuit boards (PCBs), dry process equipment undertakes key non-wet process links and serves as the core support for ensuring the precision, quality, and production efficiency of circuit boards. From substrate preprocessing to finished product inspection, various types of dry process equipment are interlocked, forming the core chain for large-scale PCB production.

In the substrate processing stage, the cutting machine first cuts large copper-clad laminates into sizes suitable for production, laying the foundation for subsequent processes. The edge grinding and chamfering machine follows closely, polishing burrs on the substrate edges and performing chamfering treatment to avoid copper foil lifting or scratching subsequent components, thus ensuring the appearance and use safety of the substrate.

Pattern transfer is a core step in PCB manufacturing. The laminator closely adheres the photosensitive dry film to the cleaned copper plate surface through heating and pressure, building a carrier for circuit pattern transfer. The exposure machine uses ultraviolet light to pass through the film, curing the photosensitive material and accurately reproducing the circuit pattern; high-end products such as HDI boards and IC substrates rely on Laser Direct Imaging (LDI) equipment, which achieves higher-precision pattern imaging without physical films.

In subsequent processing, the developer dissolves the uncured photosensitive dry film to expose the copper foil to be etched; the etcher removes the excess copper foil, leaving a complete circuit pattern; the stripping machine then peels off the cured dry film on the circuit surface to expose a clean copper circuit. In the inspection stage, the Automated Optical Inspection (AOI) equipment accurately identifies defects such as open circuits and short circuits through high-resolution scanning, ensuring product qualification rate.