PVC shrinkable film ,with rotary die head .film width :50mm-800mm.

Applications:
The set adopts the pipe-type PVC film

blowing method, which can produce film with advantages of good transparency,

high lustrousness and strong contractility. The film is a new type popular

packaging material and is widely used as the external packing for food, drink,

tea, glasswork, handiwork, sanitaryware, cosmetics, electronic products and so on.

Features:
1. The set comprises a plastic extruder, an air

ring, a head, an upper tractor for rotation, a cooling device, a heating device

for expanding, a coiling device and a motor controlling

system.

2.The set adopts the upper tractor for

360°continuous rotation, which is more stable than the rotation of a normal

die head and the film is coiled flatter. Due to the upper tractor, the work of

cleaning the screw and the residual material in each channel after machine halt

can be prevented. As for the normal rotatable die head, it is required for

dismantling the complicated rotating part.

3.Both the screw and the machine barrel

are made of superior alloy steel- 38CrMoAL. After finish machining, the parts

are hardened through nitrogen treatment, so they have the advantages of high

hardness, wear resistance and corrosion resistance..

4.Adopt a new type screw, which length-diameter ratio is 28:1. The screw is especially adapted for mixing and

plasticizing the PVC, which has the disadvantages of high melt viscosity and bad

thermal stability. The screw can strengthen the degree of plasticification.

5.An automatic temperature control

system provided with a digital display is used for controlling the heaters and

machine body cooling fan in order to enable the temperature during

plasticization to be stable and accurate and enable the plasticization to meet

the requirements of film production process more so as to ensure the quality of heat shrinkable film.

6.Both the die head and the air ring are

specially treated to make the plasticization and cooling effect better.

7.The internal surface of die head is

mirror polished and plated with hard chrome so as to reduce the film splits and

increase the service life of die head.

8.The set has the advantages of compact

structure, high degree of automation, centralized control and easy

operation.

Major Technical Parameters