The automatic packaging machine is suitable for various packaging of plastic composite films and plastic aluminum foil composite films.
Release Date:
2022-01-07
Packaging Machine
The packaging machine is suitable for various packaging of plastic composite films and plastic aluminum foil composite films. It performs vacuum packaging or vacuum nitrogen filling packaging for liquids, semi-liquids, solid granules, powders, pastes, foods, fresh fruits, vegetables, rice, fresh flowers, chemical medicines, precious medicinal materials, valuable calligraphy and paintings, electronic components, and various items that require protection against moths, corrosion, moisture, mildew, and oxidation, thereby extending their shelf life. It has a beautiful and elegant appearance, allowing a clear view of the actual form. Vacuum packaging causes folding and damage to the appearance, making it difficult to see the true form of the packaged product, and the packaging grade is not high. 2. Vacuum nitrogen filling packaging balances the internal and external pressure difference (-600 to -700 mmHg), preventing air from gradually penetrating the packaging bag through micropores, thus preventing premature spoilage and deterioration of fresh products. 3. Vacuum nitrogen filling packaging is most suitable for fragile and pressure-sensitive materials (such as fresh flowers, crisps, snacks, etc.), which cannot be achieved by vacuum packaging. 4. Some foods or materials containing moisture, after vacuum packaging, may have oil and moisture seep out due to the pressure difference inside the bag, affecting the internal quality and surface appearance of the food or material.
A vacuum packaging machine uses plastic or plastic aluminum foil films as packaging materials to vacuum package liquids, solids, powders, pastes, foods, grains, fruits, pickles, dried fruits, chemical medicines, medicinal materials, electronic components, precision instruments, rare metals, etc. Items vacuum packaged can prevent oxidation, mildew, insect damage, rot, and moisture, thereby extending shelf life and freshness. It is especially suitable for industries such as tea, food, medicine, stores, and research institutions, featuring a beautiful appearance, compact structure, high efficiency, easy operation, and wheels at the bottom for easy mobility.
The main function of vacuum packaging is deoxygenation, which helps prevent food spoilage. The principle is relatively simple: food spoilage and mold are mainly caused by microbial activity, and most microorganisms (such as molds and yeasts) require oxygen to survive. Vacuum packaging uses this principle by removing oxygen from inside the packaging bag and the food cells, depriving microorganisms of their living environment. Experiments have shown that when the oxygen concentration inside the packaging bag is ≤1%, the growth and reproduction rate of microorganisms sharply decreases; when oxygen concentration is ≤0.5%, most microorganisms are inhibited and stop reproducing. (Note: Vacuum packaging cannot inhibit the growth of anaerobic bacteria or food spoilage and discoloration caused by enzymatic reactions, so it must be combined with other auxiliary methods such as refrigeration, quick freezing, dehydration, high-temperature sterilization, irradiation sterilization, microwave sterilization, and salting.) Besides inhibiting microbial growth and reproduction, another important function of vacuum deoxygenation is to prevent food oxidation. Foods containing fats have a large amount of unsaturated fatty acids that oxidize when exposed to oxygen, causing food to become rancid and spoiled. Additionally, oxidation causes loss of vitamins A and C, and unstable substances in food pigments darken due to oxygen exposure. Therefore, deoxygenation effectively prevents food spoilage.
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