Film application
instructions for Negative Film Resist (Cat. No. 416DFR-5)
1.
For best results, clean the board using fine steel wool or similar abrasive pad and rinse with water. This will remove dirt, oils, and other contamination. Use MG Chemicals Super Wash Electronics Cleaner to quick dry board or heat it in an oven for 5 minutes.
The board must be absolutely clean and dry prior to applying film. (Note: After rinse, the board should be dried quickly to avoid oxidization.)
2. Work in a safe light environment when handling the film – any exposure to UV light will expose the film. Safe light refers to any incandescent bulb less than 40 watts. Sharp scissors work best for cutting this film. The amount of film required depends on the size of the board being laminated. A 1 cm border should be left on all sides of the board due to shrinkage from heat. (See diagram 2b) For double sided boards, cut the film big enough (one piece) to sandwich the board in the middle. (See diagram 3c) For a double-sided board, you will only have the 1 cm border on 3 sides. No border is required for the side where the film meets the board.
3.
First peel off the protective coating (on the side with the sticker - the soft hazzy side).
Apply the film face down with the side that just had the film removed. Fold back the film on the side that will be fed into the laminator. (See diagram 3b) It is important that the film is wrinkle free. For a double-sided board, no folding is required as the board is already sandwiched between the film. (See diagram 3c)
4. Turn on the laminator. Wait until the laminator ‘ready’ indicator is on. Feed the board with the film side facing up into the laminator. Feed the side of the board with the excess border folded back.
Once the board finishes laminating, put it through the laminator for a second time immediately after the first run (if required). The process is the same for the double-sided board. Store finished board in a dark and dust free environment until ready for use. (Refer to Make your own circuit board with MG Chemicals for futher instructions.