Several Common Faults of Plastic Film Continuous Sealing Machine

Film continuous sealing machine, with automatic climate control and electronic variable speed device, having advantages of accurate temperature control, speed stability, structural precision, high efficiency, reliable sealing quality, texture clear and beautiful, sealing length unrestricted and low power consumption, much liked by small and medium sized food processing enterprises. For the flexible packaging bag, the machine has been widely used, when the plastic film bag appeared side letters, in letters, bad bottom sealing fastness, the machine can be used for re-sealing, heat-sealed so as to achieve the quality requirements.

But when the film continuous sealing machine has worked a long time, some electrical failure and mechanical failure would appear, such as: sealing strong, machine stop and go, the fuse is blown, the operation issued a “squeak” started, the temperature can not be controlled, finished sealing bags be bending and deformation of, bubbles or irregular patterns and other marks appeared on the embossing seals. So lets talk about several common faults and solutions of plastic film continuous sealing machine.

First, the seal is not strong is a common fault for continuous sealing machine, sealing is not strong has three meanings:

① bags seal can not be sealed

② under the pressure of the sealing knife, although the bag sealed, but a little squeeze or tear strip would let the sealing crack;

③ in seal peel test, half seal appears strong, half seal separates, this bag sealing quality is still unsatisfactory, because the content is very easy to miss during storage and transportation.

The main reason causes over fault as follows:

(1) heat-sealing temperature is not enough;

(2) sealing speed is too fast;

(3) cold tire pressure is inappropriate;

(4) quality problems of heat-sealing film. Solving the problem that sealing is not strong, you can appropriately increase in heat sealing temperature, and then reduce the heat-sealing speed, while increasing cold tire pressure.

About the second phenomenon of sealing is not strong, it mainly because of

(1) heat-sealing temperature is not enough;

(2) sealing knife rake is not smooth enough;