Writer： admin Time：2021-06-03 16:02 Browse：℃
Automatic vacuum packaging machine vacuum packaging can save time, and because the transparent film is close to the goods, so compared with the shallow plate only covered packaging, the packaged goods will not produce frost and can prevent drying. Because the upper layer of transparent film and the lower layer of transparent film (shallow plate, cardboard) directly close together, so the water drop is not easy to flow out, can prevent the water flow in the goods channeling, expansion. Frozen food can be packaged directly in the frozen state. The transparent film is pasted on the product and tray, so the soft goods will not damage the shape after packaging.
Automatic vacuum packaging machine is a new type of commodity packaging technology. Body fitted packaging can extend the shelf life of food, enhance the three-dimensional view, and is not easy to be scattered. It is formed and pasted on the paperboard (or bubble cloth, etc.) according to the shape of the product by vacuum suction. It is to heat and soften the transparent body fitted film and then cover it on the product. Flexible packaging and high efficiency. It is especially suitable for the packaging of fragile or deformed products. Vacuum sealing, moisture-proof, anti-oxidation, dust-proof, anti loose parts, can effectively protect product quality and prolong product life.
It can automatically pack, seal and vacuum, and the packaged products can be sold directly in the box. So not only is it convenient to operate, but also the shelf life of food can be greatly extended. Keep food nutrition and original taste, taste and shape. Under 20 ℃, the fresh-keeping period is more than 5-10 days; Under the condition of 0-4 ℃, the preservation period is 30-60 days; After pasteurization (about 80 ℃), the fresh-keeping period is more than 60-90 days at room temperature. High resistance diaphragm is required. Modified atmosphere packaging combined with natural biotechnology can achieve ideal results.
Detailed packaging principle of automatic vacuum packaging machine:
A vacuum chamber is closed, the vacuum pump works, the vacuum chamber starts to vacuum, the vacuum inside the packaging bag is vacuumized at the same time, the pointer of the vacuum meter rises to reach the rated vacuum degree (controlled by the time relay ISJ), the vacuum pump stops working, and the vacuum stops. At the same time of vacuum operation, the two position three-way solenoid valve IDT works, the vacuum in the heat sealing chamber is sealed, and the hot pressing frame remains in place.
2. Heat seal:
When IDT is broken, the outside air enters the heat seal chamber through its upper air inlet. By using the pressure difference between the vacuum chamber and the heat seal chamber, the heat seal chamber inflates and expands, so that the upper hot press frame moves down and presses the bag mouth; At the same time, the heat sealing transformer works and starts to seal; At the same time, the time relay 2sj works. After a few seconds, it acts and the heat seal is finished.
3. Air return:
The two position two-way solenoid valve 2DT is connected, the atmosphere enters the vacuum chamber, the pointer of the vacuum meter returns to zero, the hot pressing frame is reset by the return spring, and the vacuum chamber is opened.
Move the upper vacuum chamber to another vacuum chamber, that is, enter the next working process, and the left and right chambers work alternately. The circulation is to pump vacuum into the packaging bag (inflate), and then seal it to form a vacuum in the bag, so as to achieve the purpose of oxygen isolation, preservation, moisture-proof, mildew prevention, rust prevention, corrosion prevention, insect prevention, pollution prevention, etc., and effectively extend the shelf life and preservation period, Easy to store and transport.
Add: 10047 Xinxing Road, Xinxing Town, Zhucheng City, Shandong Province, China