• Options
• Login
• Register
• Desktop Style
• Accelerated Mobile Pages Theme

Aluminium sheet in PCB Drilling Process

• Index

  • ask aluminium Forum
  • My Category
  • Knowledge & Technique
  • Aluminium sheet in PCB Drilling Process
• Aluminium sheet in PCB Drilling Process

• Aluminium sheet in PCB Drilling Process

  toyota1515 > 06-08-2022, 07:30 AM

  The first step in the manufacturing PCB (for two layer) is drilling. The CNC drill machines are enormous. Some of the machinces are setup to drill three panels at once and one of the bigger machines (pictured below) could drill six panels of PCBs simultaneously! A layer of aluminum foil sheet is laid down over the board stock to help absorb and distribute heat from the drilling process.
  
  After drilling, the PCB panels have the aluminium foil sheet covering removed and are ran through a machine to remove burs and smooth out any other abraisions that may have happened during the drilling process. This ensures that surface is relatively uniform for the electroless chemical plating process, the next step. The aluminum foil sheet protects the board.
  
  After being drilled, the boards are cleaned.

• RE: Aluminium sheet in PCB Drilling Process

  askaluadmin > 06-08-2022, 07:32 AM

  A layer of Aluminum sheet for pcb is laid down over the board stock to help absorb and distribute heat from the drilling process. After drilling, the PCB panels have the Aluminum sheet for pcb covering removed and are ran through a machine to remove burs and smooth out any other abraisions that may have happened during the drilling process.
  
  According to the different PCB DRILL entry materials, the pcb sheet market is usually divided into four categories:
  phenolic paper sheet(including phenolic paper cover and cold sheet). coated resin aluminum sheet. (also known as lubrication aluminium sheet). aluminium entry sheet (Ie aluminium entry foil), epoxy glass cloth sheet. Phenolic paper sheet industry less amount. and cold sheet( known as phenolic paper sheet) is used for flexible plate drilling. coated resin aluminum sheet for HDI board. dense BGA, IC board, etc.
  
  
  
  Micro-hole drilling and flexible plate drilling. made of resin and aluminum foil; aluminum entry sheet or aluminum entry foil. for ordinary and fine circuit board drilling, made of alloy aluminum foil. epoxy glass cloth cover. by the ring Oxygen resin and fiberglass cloth composition. the current market use very little. Besides, there have been a composite aluminum sheet. from wood pulp (core) and aluminum foil composition, rare, has been out of the market.
  
  With the development of PCB technology, PCB drilling holes are getting smaller. and smaller, more and more holes. drilling technology requirements are getting higher and higher. entry sheet on the drilling quality of the impact is more important. Some high-end or high-tech requirements of the PCB boards. generally use some of the high-end entry sheet. PCB in the market with the entry sheet of the product structure. with the development of PCB technology.
  
  Aluminum sheet for pcb structure continues to upgrade, and PCB drilling technology upgrade. The selection of drilling materials are in the high block plate. such as lubricating aluminum sheet, cold sheet. phenolic paper pad, melamine wood plate. In particular, high-grade LE sheet, PCB drilling special entry material. HDI (including IC carrier board) with cover, flexible PCB drilling with cold plate. become the market faster varieties.
• Next Oldest Next Newest