The formation mechanism of orange valvule-like pinhole in rolled aluminium foil was investigated by using optical microscopy,scanning electron microscopy,and energy dispersion X-ray spectrum.
Existing tubes are rarely recycled, not only because they have residue left inside them but also because they are usually made from a laminate of plastic and aluminium foil.
These moulds are shipped to manufacturers, where they're melted again, and rolled out into thin sheets that can be cut, and bent, and shaped into new products, like cans, and licence plates, and aluminium foil.
脂、硝基纤维素等制成药品
用铝
保护涂料。
英语短文 
用光学显微镜、扫描电镜、能谱分析等试验手段对铝
涂在一卷铝箔上。
有的牙膏管很少
回收，不仅是因为里面有残余
，还因为它们通常是由一层塑料和铝箔制成。
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