VACUUM AND GAS PACKAGES.

被引：0
|
作者：
Young, William E. [1 ]
机构：
[1] William E. Young Co, William E. Young Co
来源：
Packaging Boston, Mass. | 1987年 / 32卷 / 05期
关键词：
CONTAINERS - Vacuum Applications - FOOD PRODUCTS - Preservation - PACKAGING MATERIALS - Plastics;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
This article deals primarily with preservative packaging involving plastics. Aside from mechanical protection, the objective of preservative packaging is to prevent the passage of moisture and/or oxygen between the package contents and the environment. Vacuum packages have atmospheric pressure acting through the package wall, tending to squash the food product. The answer to this problem has been to first remove the air in the vacuum chamber, then introduce some high-purity nitrogen, so that part of the air is replaced by this nitrogen before sealing.
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页码：126 / 128
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