3、 Advantages of PVDC composite membrane:
The development and application of PVDC composite membrane is a great production change in the field of PVDC reference. Compare the current circulation of high-temperature cooking resistant composite membrane on the market:
A. Comparison between PVDC and aluminum foil composite film:
Aluminum foil composite film is not suitable for microwave heating and can not adapt to modern fast-paced life; The aluminum foil is opaque and cannot satisfy people’s desire to see the contents; The fold of aluminum foil bag is easy to break and leak. At present, most meat food packaging is vacuum packaging. After vacuuming the aluminum foil bag, the fold of the aluminum foil bag is easy to crack and break after vacuuming, resulting in reduced barrier. However, the aluminum foil composite film has better shading performance.
B. Comparison between PVDC and nylon composite membrane:
Both nylon composite film and PVDC composite film overcome the above shortcomings of aluminum foil and are widely used in the packaging of meat products. Compared with PVDC composite membrane, nylon composite membrane has lower price, better transparency and strong puncture resistance; However, the barrier property of nylon composite film is poor. After sterilization at high temperature, the shelf life of meat packaged with nylon cooking bags is only 2-3 weeks at normal temperature; Under the condition of higher temperature in summer, the shelf life is shorter; Meat packaged with it is generally refrigerated at low temperature and rarely stored at normal temperature.
The most prominent example of the application of PVDC in liquid food is the use of PVDC as a milk film. The good oxygen resistance of PVDC can extend the shelf life to a greater extent. The excellent gas resistance of PVDC can effectively prevent dehydration, maintain quality and quantity, and its excellent flavor resistance can maximize the original flavor of milk. In addition, the use of PVDC composite film can also replace the glass can packaging of some fruits, which can effectively reduce the cost share of packaging in the whole food production.
To summarize the excellent barrier performance of PVDC, we can roughly summarize the application fields of PVDC:
A. Milk powder, tea, biscuits and other foods that need to prevent moisture absorption;
B. Food, chilled meat and other meat products that do not need high temperature sterilization;
C. Cigarettes, cosmetics and other products that need to prevent the loss of flavor;
D. Meat products, boiled vegetables, and convenience foods that need high and low humidity sterilization for pharmaceutical powder and blister packaging;
E. Vacuum and inflatable packaging of raw meat and chilled meat;
F. Food, high-protein, high-fat grain and oil crops, such as:
Rice, peanut kernel, almond etc.
G. Precision instruments:
All kinds of precision instruments that need moisture-proof and rust-proof need to be sealed for a long time for military equipment, weapons and ammunition;
H. Vacuum and inflatable packaging for pasteurized meat products, boiled vegetables, raw meat for convenience food segmentation, and chilled meat for composite processing with other paper and plastic materials.
Post time: Jun-06-2023