1, the sterilization, the right amount of aluminum cap, after 180 ℃ hot air 1 h, surface should be no obvious change, surface should be no uplift or escape.【Aluminium bottle caps】
2, cooperate with sex: after the 180 ℃ hot air 1 h aluminium cap, a moderate amount of cover in the right with a nominal capacity on the bottle of water, using a block device block, should cooperate with appropriate.【Aluminium cap screws】
3, coating fastness: learn from 180 ℃ hot air 1 h aluminium cap, a moderate amount of alcohol in 121 ℃ + 2 ℃ for 30 min after steam sterilization, with dip with 80% (V/V) ethanol solution of absorbent cotton to wipe the surface for 30 seconds, reoccupy soaked with 70% (V/V) absorbent cotton to wipe the surface of the isopropyl alcohol solution for 30 seconds, the coating should be no wear and tear.【Aluminum screw caps】