Liheng Machinery Co.Ltd.
Adress:No. 10, lion zhongbizi tech Industrial Park, Shishan Town, Nanhai District, Foshan, Guangdong
What are the properties of the plastics used in food packaging?
(1) the plastic products used for food packaging must fully meet the hygienic standards for food packaging. That is, the plastic film itself does not transfer toxic substances, non-toxic, odorless, no odor, printing bag can reach the above standards.
(2) according to the needs of different kinds of food packaging, the corresponding packaging materials are adopted. First of all, we should make clear the nature of the inside. For example, the packaging of biscuits, tea and tablets requires a high degree of moisture resistance and gas resistance in order to maintain its original flavor.
The fresh vegetables and Fruits packaging need to supply adequate oxygen for their survival. If they use barrier materials, they will bring side effects.
Another example: frozen food packaging, plastic packaging materials, have low temperature resistant performance and hardening of freezing resistance; on the production of "cooking bags" for composite materials have high temperature resistance, no deformation and cooking performance; the greasy food packaging, have oil resistance and UV penetration of function.
In addition, it is also important to pay attention to the defects of the selected plastic film in the operation of food packaging machinery, such as hot sealing, wrinkling, perforation, and breaking bags.
To sum up, the plastic used for food packaging materials should not only have the properties that the general packaging materials should have, but also pay special attention to the hygiene of packaging, and become an important way to ensure food hygiene, safety and prolong the storage life of food.
This article is provided by Foshan City Li Heng Machinery Co., Ltd., for details, please log in to www.fslihengjx.com