Unbelievable, you still can't distinguish this defect?
Aluminum foil manufacturers teach you to identify aluminum foil defects
Aluminum foil has excellent performance and is widely used in the packaging industry, architectural decoration, automotive parts, electronic labels, electrolytic capacitors and other fields. Especially the use of packaging materials is very common, such as food, medicine, beverages, etc., which is well received by the market. Next, aluminum foil manufacturer Mingtai Aluminum teaches everyone to identify the defects of aluminum foil, so as not to affect the later processing.
1, poor plate type
Due to uneven deformation, the surface of the foil is locally undulated, which is called poor plate shape.
2, the oil is not clean
It is detected whether the degreasing is clean. Generally, after annealing, the degreasing grade is detected by brushing method. If the level specified by the brushing test is not reached, the aluminum foil may have oil.
3. Cracked edge
The phenomenon that the longitudinal edge of the surface of the aluminum foil is broken is called a split edge. In severe cases, obvious gaps are visible in the edges, which have a great impact on the later use.
4, adhesion
The aluminum foil roll sheet is not easy to open, and the multiple sheets are plate-shaped when opened, and the product free fall length cannot meet the standard requirements.
5, pinhole
Pinholes are irregular holes that are visible on the surface of an aluminum foil. Pinhole problems can affect sealing.
6, highlights
When the aluminum foil is double-rolled, the uneven spots on the dark surface of the aluminum foil appear as bright spots.
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