Full-automatic Food Vacuum Packaging Machine, Vacuum Packaging and Sealing Machine for Pet Food
A vacuum packaging machine is an automated device that removes air from packages to create a low-oxygen vacuum environment and conducts heat sealing. Its core functions include preservation and corrosion resistance, moisture and oxidation resistance, and volume reduction. It is widely used in industries such as food, pharmaceuticals, electronics, and hardware.
Its working process is as follows: after items are placed into composite plastic bags or aluminum foil bags, the bags are put into a vacuum chamber or connected to an air suction nozzle. A vacuum pump extracts air to achieve a vacuum degree of 600–1333 Pa inside the bags, reducing the oxygen concentration to below 0.5% and inhibiting the growth of aerobic bacteria. A heating strip then performs heat sealing at 150–200°C. Some models can be filled with inert gases such as nitrogen and carbon dioxide to prevent package collapse and enhance preservation. The equipment is mainly divided into two categories: internal suction (chamber type) and external suction. Internal suction machines feature high vacuum degree and are suitable for cooked food, seafood, and precision components; external suction machines are flexible and ideal for large and flexible items. By automation level, they are classified as semi-automatic and fully automatic. High-end models are equipped with PLC touch screens for precise parameter control. Vacuum packaging can extend the shelf life of food by 3–5 times and reduce the volume of textiles and hardware by more than 80%. With advantages of high efficiency, stability, and strong protection, it is a core device in modern industrial and commercial packaging.
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