A Complete Collection of 100000 Whys
Fav十万个为什么
为什么用镀锡铁皮做罐头？
用镀锡铁皮做罐头主要是因为其良好的密封性、耐腐蚀性和加工性能，具体如下：
1、良好的密封性：镀锡铁皮表面光滑，易于焊接密封，能够有效防止外界空气和细菌进入罐头内部，从而延长食品的保质期。
2、耐腐蚀性：锡具有良好的耐腐蚀性，镀锡铁皮能够在一定程度上抵抗食品中的酸、碱、盐等物质的腐蚀，保护罐头内部不受损害。
3、加工性能好：镀锡铁皮具有良好的延展性和可塑性，便于加工成各种形状和尺寸的罐头，同时易于印刷和装饰，提高产品的美观度。
总结：用镀锡铁皮做罐头主要是因为其良好的密封性、耐腐蚀性和加工性能。
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