Screw and Barrel for Film Blowing MachineSHmHDg

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<p> <span style="background-color:#FFFFFF;">The screw and barrel is the most important part on all kind of extruding machines, like film blowing machine, stretch film making machine, air bubble film making machine. It is used to convey, compact, melt, agitate and pressurize the plastic. The ratio L/D of the screw and barrel can be 28:1 or 30:1, depends on different machine purpose. The material of the screw and barrel is 30CrMoAl.</span> </p> <p> <span style="background-color:#FFFFFF;"><img src="http://i.bosscdn.com/product/f2/9a/20/70ff6bf86fe88dc00f6962f515.jpg" title="screws" alt="screws" /></span> </p>