No. 2.3.3
Coating Removal, Peeling Method
OUTLINE
This peeling removal method for coating can be used only under special
circumstances. Normally this method is used to remove RTV silicone or other
thick rubbery-like coating materials.
The coating material is removed using a dull knife or otherwise dull blade to
slit the coating material and to peel it off the printed board or printed board
assembly.
To determine the appropriate coating removal procedure the coating must first
be identified. Refer to procedure number 2.3.1.
NOTE
This method is limited to coatings that are rubbery in nature to allow the
coating material to be slit into small sections and peeled off the printed board
assembly.
TOOLS & MATERIALS
Heated Blade or Thermal Parting Tool
Knife
Wood Sticks
PROCEDURE
- Slit and peel off the coating material with a dull knife or heated dull
blade. (See Figure 1).
- Repeat as needed until the required material is removed.
EVALUATION
- Visual examination or UV light may be used to verify complete removal of
coating.
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Solutions Across the Board
TM
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Product Class: R/F/W/C
Skill Level: Advanced
Conformance Level: High
Revision: E
Revision Date: Jul 7, 2000
Repair Service Charge
Coating Removal Required At Outlined Area
Figure 1: Slit and peel off coating using a knife or heated blade.
Figure 2: Removal complete.
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Tricks of the Trade
To use this procedure effectively the coating to be removed must
be thick, relatively soft, and rubbery-like. We recommend first attempting to
use procedure: 2.3.5 Coating Removal,
Grinding/Scraping Method.
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