塑料瓶盖封口扭力矩对封口质量影响的研究

Research on influence of moment of twisting force on sealing quality of plastic bottle closure

用小型 (净含量≤ 2L)PET塑料瓶为包装材料生产的无气饮料 ,其封口工序一般来说都是一个CCP点 ,对这一个CCP点的监控 ,其关键限值、监控对象、监控方法、监控频率没有一个统一的国家标准 ,每一个工厂都是根据自己的生产实际作出具体规定 ,以既不泄露也不费力打开瓶盖时的扭力矩 ( 1 5± 0 3 )N m作为制定这一个CCP点的关键限值 。

Generally speaking, there's only one CCP in the sealing procedure for small-size (net content≤2L) plastic bottles containing still beverages.But we have no united national standard of this CCP's critical limit, object of monitoring, method of monitoring or frequency of monitoring. Each plant works out concrete regulations based upon its processing practice. A moment of twisting force of 1.5±0.3 N. m that dosen't cause leakage and allows bottle closures to be opened easily is regarded as the CCP's critical limit. This critical limit may be used as a reference by the government department concerned in the verification of HACCP for small-size plastic bottles containing still beverages.