How is the sandwich package perfectly sealed?

The sandwich packaging process is more and more widely used in the packaging industry. This packaging process is beautiful, convenient and fast, and is favored by consumers and manufacturers. However, many manufacturers use the heating method in the production process, which is easy to cause burnt on the surface of the paper card when heating, and can not achieve a perfect sealing effect.

How can sandwich packaging achieve the perfect sealing effect?

Sandwich packaging should be welded with high frequency. If it is heated, it will cause burns on the surface of the paper card. (Fake goods are commonly used.) If you use a heating or a large press, try not to use more than 250 grams of paper card, and low-melting plastic oil. Use hot melt adhesive. If the paper card is too thick, it will not be welded well, and it will also produce welding bubbles (process decision). The high frequency machine will not have the above problems.

The working principle of high frequency machine supports:

The high frequency machine converts 50 Hz low frequency alternating current input from the external power supply into high frequency 20,000 Hz or higher alternating current. After the high frequency current is applied to the induct-or coil, it is converted into a high frequency magnetic field by the electromagnetic induction principle, and the internal resistance value is utilized. The principle of current thermal effect generates heat, because this heat is generated directly inside the object, so this heating method is fast and efficient. What is important is that its heating rate and temperature are completely controllable and do not cause damage to heated items.

In summary, the high frequency machine can be perfectly solved because of the trouble caused by the lower heating and the upper heating mode.

Shanghai Jiu Luo has developed and manufactured a variety of high-frequency machine packaging equipment for the above problems. For different manufacturers to introduce packaging equipment suitable for production, perfect solution to the situation of product sealing is not up to standard.

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Automatic multi-station rotary packaging machine

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