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Screw sealing machine

Source:   Date:2014-10-28 15:46:34   Views:

(1) host. Use is the plastic is heated and pressurized into a homogeneous melt volts, at constant pressure, the conditions set out under mild quantitative. After it is accompanied by the nose by a white or a combination of several hosts and various auxiliary units, may constitute various types of extruded film production equipment.
Host by the barrel bag with a heating and cooling thermostat setting, and mounted in the cylinder is rotated by a screw speed drive can sealing machine and some other component parts. Sealing machine screw and barrel to maintain a smaller gap, the gap size affects performance. The gap is small, the pressure, shear and strong, good resin plastics, is also required to melt sealing machine screw length can be reduced. However, manufacturing and assembly requirements of high precision, increasing the costs. Gap, 911 pressure reducing shear weakened, resin plastics good, melt length should be lengthened. When the gap increases to sealing machine screw homogenizer 15% segment spiral groove depth, the screw sealing machine can not be used.
Screw (2) sealing machines. Sealing machine screw extruder from the feed, compression, homogenizing effect of plastic division, which consists of different thread depth segments constitute different functions to perform the above functions are the raw material input feed zone, spiral groove deep and loose solid particles the full. Compression section spiral groove depth faded while obstructing the nose, filters, manifolds, high pressure, the material compaction. Lower inner friction outer heat, mixing and shear caused by the melting point of the material is gradually warming to melt. The metering section, the most shallow depth of spiral groove, sealing machine screw material by mixing in a molten state, to the degree consistent throughout ju homogenized state can be squeezed out. Screw the ordinary three-sealing machine inefficiencies exist, plastics uniform enough problems. To meet different requirements, had developed a different new style. As has melted and unmelted make material separation spell site as soon as possible in order to improve the separation type BM screw screw pitches ranging from sealing machine, Barr grade rod, the rod and melt orange Shan XLK sealing machines, can prevent unmelted solid phase through the slotted screw barrier-type sealing machine, can make solid-liquid phase mixing and thinning of the solid phase shunt pin screw-type sealing machine, DIS screw and so on. If the screw is provided in the cold sealing machine construction, transportation plastics will be better. When more significant quality thin film can be a screw-type sealing machine exhaust, the exhaust gas that is inserted into the mixing zone in the homogenization section.
Sealing machine screw length to diameter ratio of up to 30 large length, plastics more uniform, will help improve the number of revolutions, to increase production and. But the length of the Big Easy sagging caused by wear and tear.
Screw feeder segment sealing machine groove shape is rectangular, favorable feeding. The compression section serrated to increase shear.
Screw sealing machine is under high temperature and pressure and intense friction work, the material to be suitable for wear and corrosion resistance. Common 45 steel, 40Cr, nitriding steel, 38CrMoAI like, preferably the latter two overall performance. In recent years, also uses 34CrA1Ni, 31CrMol2, or the spiral edge surface coating wear and corrosion resistance of the alloy then P48 Ion nitriding treatment.