密封塑料软包装袋胀袋机理

Expansion Mechanism of Sealing Plastic Flexible Packing Bag

以酸菜鱼产品为研究对象,从微生物因素和非微生物因素2个方面研究外层包装袋胀袋原因及机理。结果显示,4组样品的染菌率由86.6%~100%,20%~26%和23.3%~33.3%逐渐下降到0时,胀袋率均为0,而包装袋中添加10 mL无菌水的4组样品,胀袋率均为100%,发现处于无菌状态的高压蒸汽灭菌样品,胀袋率为100%。试验表明,引起外袋胀包的原因并非是微生物产气,而是由于袋内含水分、湿度大,在流通销售过程中遇到高温条件,袋内会产生较大的蒸汽压,进而引发胀袋。通过实际生产进行试验验证,将袋内水分进行烘干处理,胀袋率由原来的33%下降到0,解决了产品胀袋问题。

Taking sauerkraut fish products as the research object,the reasons and mechanism of the outer packaging bag expansion from two aspects of microbial factors and non-microbial factors were studied.The results showed that when the infection rate of the four groups of samples decreased from 86.6%-100%,20%-26%and 23.3%-33.3%to 0,all the samples bag expansion rate was 0.The four groups of adding 10 mL of sterile water samples had a bag expansion rate of 100%.At the same time,the autoclaved samples in the aseptic state were found to have a bag expansion rate of 100%.It could be seen that the reasons of the expansion of the outer bag was not microbial gas production,due to the moisture and humidity of the bag;High temperature conditions were encountered during the circulation and sales process,and a large vapor pressure is generated in the bag,thereby causing the bag expansion.Further,the test through actual production was verified,and the moisture in the bag to dry the process was processed.The bag expansion rate decreased from 33%to 0,which solved the problem of bag expansion of the product.