• +86-755-23012705
  • [email protected]
  • Building 3, Jinfeng Industrial Park, Fuyong Street, Baoan District, Shenzhen ,China
Search
Close
logo
  • Home
  • About Us
    • About XPCB
    • Flexible PCB Fabrication
    • PCB Fab Capability
    • PCBA Capability
    • Our Certifications
    • Our Facility
    • Quality Assurance
  • PCB Fabrication
    • Flexible PCB
    • Rigid Flex PCB
    • Rigid PCB
    • ELIC HDI PCB
    • RF PCB
    • Medical PCB
    • Automotive PCB
    • IoT & IIoT PCB
    • Industrial Control PCB
    • Telecommunication PCB
    • Consumer Electronics PCB
  • PCB Assembly
    • Turn Key PCB Assembly
    • Consigned PCB Assembly
    • Components Sourcing
  • Resources
    • PCB Glossary
    • PCB Design Guide
    • PCB Blog
  • Contact
Menu
  • Home
  • About Us
    • About XPCB
    • Flexible PCB Fabrication
    • PCB Fab Capability
    • PCBA Capability
    • Our Certifications
    • Our Facility
    • Quality Assurance
  • PCB Fabrication
    • Flexible PCB
    • Rigid Flex PCB
    • Rigid PCB
    • ELIC HDI PCB
    • RF PCB
    • Medical PCB
    • Automotive PCB
    • IoT & IIoT PCB
    • Industrial Control PCB
    • Telecommunication PCB
    • Consumer Electronics PCB
  • PCB Assembly
    • Turn Key PCB Assembly
    • Consigned PCB Assembly
    • Components Sourcing
  • Resources
    • PCB Glossary
    • PCB Design Guide
    • PCB Blog
  • Contact
Get Instant Quote

Common Problems and Solutions for PCB Film

In the PCB manufacturing process, some PCB film failures are generally encountered when using PCB dry film technology, the article introduces common faults and solutions for PCB film.

1. The dry film does not stick firmly on the copper foil.
(1) The surface of the copper foil is not clean, with oil stains or oxide layers. Re-clean the board surface and operate with gloves.
(2) The solvent in the dry film solvent evaporates and deteriorates. Store at low temperature and do not use expired dry film.
(3) Fast transfer speed and low PCB film temperature. Change the PCB filming speed and PCB filming temperature.
(4) The ambient humidity is too low. Keep the relative humidity of the production environment at 50%.

2. Air bubbles appear between the dry film and the surface of the copper foil.
(1) The surface of the copper foil is uneven, with pits and scratches. Increase the pressure of the PCB film, and handle the board lightly.
(2) The surface of the hot pressing roller is uneven, with pits and film drilling dirt. Pay attention to protecting the flat surface of the heat press roller.
(3) PCB film temperature is too high, reducing the PCB film temperature.

3. Dry film wrinkles.

(1) The dry film is too sticky, place the board carefully.

(2) The board is too hot before the PCB film, and the board preheating temperature should not be too high.

4. Surplus glue.
(1) The quality of the dry film is poor, replace the dry film.
(2) The exposure time is too long, shorten the exposure time.
(3) The developer is invalid, change the developer.

Share

Related posts

2022-05-20

Electromagnetic Compatibility Design of Mobile Phone PCB (1)


Read more
2022-05-20

The PCB Circuit Design of LED Switching Power Supply


Read more
2022-05-20

Electromagnetic Compatibility Design of Mobile Phone PCB (2)


Read more
amazon
amphenol-logo
halliburton
intel logo
samtec logo
sanmina logo
Previous
Next

Company Info

XPCB Limited is a premium PCB & PCBA manufacturer based in China.

We specialize in multilayer flexible circuits, rigid-flex PCB, HDI PCB, and Rogers PCB.

Quick-turn PCB prototyping is our specialty.  Demanding project is our advantage.

Head Office

XPCB Limited
Address :
Building 3, JinFeng Industry Area,  Fuyong Town, Baoan District, Shenzhen, Guangdong, 518103, China.

Tel : +86-136-3163-3671
Fax : +86-755-2301 2705
Email : [email protected]

Quick Links

  • Flexible PCB
  • Rigid Flex PCB
  • ELIC HDI PCB
  • RF PCB
  • PCB Capability
  • PCBA Capabiility
  • About Us

PCB Blog

Electromagnetic Compatibility Design of Mobile Phone PCB (1)

Read More »

The PCB Circuit Design of LED Switching Power Supply

Read More »

Electromagnetic Compatibility Design of Mobile Phone PCB (2)

Read More »

© 2023 - XPCB Limited All Right Reserve