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(KODEST)Decreased permeability
dgkede
2025-07-14
Phenomenon
Under normal circumstances, the inner cavity and inner surface of the sandwich structure of the coated object can be coated with paint. However, in production, it is sometimes found that the inner cavity is not coated with paint or is coated very thin, which is called a decrease in penetration force.
In the production of automobile body painting, regular spot checks should be carried out by disassembling the body, observing the painting condition of its internal cavity and weld joints, and measuring the film thickness to assess changes in swimming penetration.
REPORT