保鲜奶在二次灭菌过程中瓶内压力试验研究

PRESSURE TEST OF THE INSIDE OF A BOTTLE CONTAINING FRESHENED MILK DURING TWO STERILIZATION PROCESSES

研究了ＨＤＰＥ瓶装保鲜奶在二次灭菌过程中瓶内压的变化规律；通过模拟实验测定了ＨＤＰＥ瓶的变形量，建立了ＨＤＰＥ瓶变形量随温度及压力差变化的二元回归方程。在此基础上测试得到了ＨＤＰＥ瓶及其铝箔封口的临界压力差。

The paper establishes dualitic regression equation among HDPE bottle's deform degree, various temperatures and pressure differences through simulated test of determinating HDPE bottle's deform degree during two sterilization processes;and gains the critical pressure differences between the inside of a HDPE bottle and its aluminium foil seal.