What is the quality standard of sandwich panels?
A. appearance quality requirements
1. board: flat surface, uniform color, no
obvious bump, warpage, deformation.
2. surface: clean surface, no glue marks
and oil stain.
3. defects: apart from crimping and cutting
edges, there are no obvious scratches, bumps, scars, etc.
4. incision: straight cut, no sharp edges
on the edge of the plate, degumming and wavy, and the panels should be bent
inside.
5. core material: the core plate should be
neat, no big pieces spalling, and there is no obvious gap between the block and
the block.
B. Size tolerance of sandwich panels
1. length: tolerance deviation ±3~5mm
2. width: tolerance deviation±2mm
3. thickness: tolerance deviation ±2mm
4. diagonal deviation: allowable deviation ≤6
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