How to choose film blowing machine?

I believe that many friends will wonder why there are two different prices for the same function of the film blowing machine, where is the difference between the two film blowing machines, and which film blowing machine should I buy?Today we will answer everyone's doubts, I believe that after reading today's article, you will be able to choose a suitable film blowing machine for yourself.

1 Screw & Barrel Comparison
In terms of design, L/D of SJ-MB is 28:1,no two line push;the screw L/D of SJ-HMB is 30:1,there are two line push, the shape like horn,so the  SJ-HMB has a longer aspect ratio, faster speed, higher output and better film quality.
In terms of material,SJ-MB screw material is 38CrMoAlA; SJ-HMB screw material is 645 steel,The hardness of the SJ-HMB screw is harder and the service life is longer,the film is more transparent when blown out.

2 Die head part Comparison
In terms of design, SJ-HMB have Large outer diameter wall thickness, longer length, to ensure that the film plastic is very good plasticization, higher output.
In terms of material,SJ-MB is common material;SJ-HMB is 645 steel,After 3-5 days of heat treatment, the impurities are cleaned more cleanly, the die head is more accurate, and the film thickness blown out is better.
In terms of air ring and air hole，SJ-MB have single air ring and 6 air holes;SJ-HMB have double air ring and 8 air holes,so the air volume is larger and The pressure of the wind at each point is more uniform,the film can be cooled faster, and the output of the machine is increased.

3 Electric parts Comparison
SJ-MB all motor controlled by shenou inverter，the blower and rewinder has no controlled by inverter（optional）,Other Electric parts brands are all good Chinese brand; SJ-HMB all motor ,blower and rewinder controlled by LS inverter，save power，easy to operation and protect machine,Other Electric parts is word Famous brands ,Siemens motor,LS inverter,Omron temperature .
So when you have a sufficient budget, the quality requirements of the film are relatively high and the machine with high output is required, then choose SJ-HMB film blowing machine,If you do not have a high budget and the production requirements are not high, you can choose SJ-MB film blowing machine.