What is the working principle of the film blowing machine? Have you introduced the production technology of China plastic film blowing machine in detail?

Working principle: Film blowing machine is a mechanical device that heats and melts plastic particles and then blows them into films.

(1) production process and production principle: dry polyethylene particles are added into the hopper, and the particles enter the screw from the hopper by their own weight. When the particles contact with the bevel edge of the thread, the rotating bevel edge surface generates a thrust perpendicular to the bevel edge surface, and the plastic particles are pushed forward. In the process of pushing, plastic particles gradually melt due to the friction between plastic and screw, plastic and barrel, and the collision and friction between particles, and at the same time due to the external heating of barrel. The molten plastic is filtered by the die head to remove impurities, then comes out of the die mouth, cooled by the gas ring, inflated by the herringbone plate, pulled by the roller and rolled into a cylinder.

(2) The structure of the film blowing machine is mainly composed of an extruder, a die, a die, a cooling device, a foam stabilizer, a herringbone plate, a traction roller, a winding device and the like.

There are many kinds of film blowers, such as PE and POF. The main products of China plastic machinery are high and low pressure polyethylene dual-purpose film blowers, rotary die blowers, high and low pressure ultra-thin film blowers, gravure film blowers, offset film blowers, large-scale film blowers, ZS series concave-convex self-locking bag film blowers, ZS series double-head film blowers, PE heat shrinkable film blowers, double-layer coextrusion film blowers and high-speed polyethylene film blowers. I hope it helps you.