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公开(公告)号：EP1116803A3
公开(公告)日：2003-05-02
申请号：EP01400048.3
申请日：2001-01-10
摘要： This invention provides a method of pickling an aluminum can body comprising ejecting a pickling agent from a tank against an aluminum can body caused to traverse said tank overhead to clean them and recycling the used agent to said tank, wherein said pickling agent is an acidic aqueous solution containing (A) a polyethylene glycol type detergent nonionic surfactant having an HLB value of 14 to 18 and (B) a low-foaming nonionic surfactant having an HLB value of 2 to 12, the concentration of (A) is 100 to 5000 ppm and the ratio of (A) to (B) is 10:90 to 90:10, and the pickling agent in the tank is withdrawn out of the system from below the agent level.
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公开(公告)号：EP1116803A2
公开(公告)日：2001-07-18
申请号：EP01400048.3
申请日：2001-01-10
摘要： This invention provides a method of pickling an aluminum can body comprising ejecting a pickling agent from a tank against an aluminum can body caused to traverse said tank overhead to clean them and recycling the used agent to said tank,
wherein said pickling agent is an acidic aqueous solution containing (A) a polyethylene glycol type detergent nonionic surfactant having an HLB value of 14 to 18 and (B) a low-foaming nonionic surfactant having an HLB value of 2 to 12,
the concentration of (A) is 100 to 5000 ppm and the ratio of (A) to (B) is 10:90 to 90:10, and
the pickling agent in the tank is withdrawn out of the system from below the agent level.摘要翻译： 本发明提供了一种酸洗铝罐体的方法，其包括从罐体向铝罐体喷射酸洗剂，使其穿过所述罐顶部以清洁它们并将所使用的试剂再循环到所述罐中，其中所述酸洗剂为酸性水溶液 含有（A）HLB值为14〜18的聚乙二醇型洗涤剂非离子表面活性剂和（B）HLB值为2〜12的低发泡性非离子表面活性剂，（A）浓度为100〜5000ppm （A）与（B）的比例为10:90〜90:10，罐中的酸洗剂从试剂水平以下从系统中排出。
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