What causes the heating strip of vacuum packaging machine to burn out?
We should use the vacuum packaging machine well, not only to understand its working principle and technology, but also to understand its vulnerable parts and the role of various accessories, so as to master its correct operation and maintenance methods. The heating strip plays an important role in the sealing work of the packaging machine. It is one of the vulnerable parts of the equipment. It often burns out. What causes this?
1、 Copper cylinder head is over oxidized. Now most vacuum packaging machines use copper cylinder head. It is OK at the beginning of work, but it will be oxidized to black after a period of time, so the heating belt is easy to burn.
2、 Programming problems. The correct heating procedure is to press the heating belt to the sealing line before heating, but many manufacturers blindly pursue the working efficiency and often heat it before the pressing port, resulting in the damage of the heating belt dry burning. To deal with this problem, we need to choose manufacturers with good quality and brand.
3、 Material problem of heating strip. Nowadays, nickel chromium or iron chromium are widely used. Nickel chromium is of good quality and durable, but its price is much more expensive than iron chromium. The other is stainless steel with heater, which is easy to burn.
4、 The power of the transformer is too small, and the reason for the power of the transformer is probably due to Jerry building. In addition, if the vacuum pumping time of the packaging machine is too short, too much indoor residual air will lead to premature oxidation of the heating belt. Generally, the damage frequency of single chamber vacuum packing machine plus tropics is smaller
