Moisture-proof, airtight, shading, abrasion resistance, Paul fragrance,
non-toxic and tasteless, and other advantages. If you use this composite
material for cooking foil food packaging, food can guarantee at least more
than one year without deterioration. Aroma preservation aluminum film is
good, with a metallic sheen, nicely decorated, but opaque, contents of the
package is not intuitive, and poor rub resistance song, easy to produce
after rubbing off or pinholesCracks, thus affecting the barrier properties. Aluminum coated with hard
and soft aluminum foil points. Hard aluminum foil having a thickness of 20
~ 30μm; soft aluminum foil having a thickness of 7 ~ 9μm. When rolling,
it requires a lot of lubricating oil cooling and lubrication. When
monolithic rolling, two surface light; two rolling, light side, a dark
side. Hard aluminum generally used as a composite layer (surface
cleanliness is relatively low), soft aluminum composite used in printing.
Pinhole problem: 7μm less than 50 holes / m; 9μm less than 30 holes / m;
11μm is less than 10 holes / m.
China [CN] 
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