Factory direct coextrusion machine door installation

Features: Three plastic extrusion blow molding composite film crew is our company based on market needs and developed in the design of the structure to absorb the advanced level of similar products at home and abroad. It uses flat squeeze blowing continuously blown fold width 800/1500 mm and a thickness of various LDPE 0.08 mm, HDPE, LLDPE, MLLDPE, PA packaging films. This film due to its good barrier properties, moisture, moisture, rain, wind, frost, oxygen barrier, oil, and therefore can be used in light and heavy packaging, for example fresh fruits, meat, pickles, fresh milk, drink, etc. . 1, the head 360 degree continuous rotation using stratified type spiral mandrel. 2, fast Changer reasonable structure, easy to replace the filter, use and reliable. 3, the unit is equipped with a variety of features: record growth device, vertical cutting device, cooling water row, flattening roller, scrap collecting device. Model 3SJ-G1000 SJ-G1200 3SJ-G1500 screw diameter ф50 × 2 ф60 × 1 ф60 × 2 ф65 × 1 ф65 × 2 ф70 × 1 Screw 28: 128: 128: 1 screw speed 15-150r / min 15-150r / min 15-150r / min Main motor power 15Kw × 2 18.5kw × 1 18.5Kw × 2 22kw × 1 22Kw × 2 30kw × 1 single extruder output 50kg / h 80kg / h 100kg / h die Specifications ф150 φ200 ф200 φ250 × 1 ф250 ф300 × 1 film thickness 0.01-0.10mm 0.01-0.10mm 0.01-0.10mm film single largest discount diameter 1000mm 1200mm 1500mm total electrical capacity 76Kw 88Kw 102Kw Dimensions 6600 × 4100 × 5000mm 6800 × 4300 × 6000mm 7000 × 4800 × 7500mm Weight 4T 5T 6T AA + B type film blowing machine is a twin-screw coextrusion machine easy to operate to save resources A + B + A blown film machine for the three layer co-extrusion blow-screw film machine blown film process and parameter control presentation (Figure) thermoplastics usually blow molding method can be used to produce blown film, blown film is extruded into a thin plastic tube with compressed air and then hot plastic inflation, the tubular film and then the product obtained after cool setting, the performance of the film between the alignment film in the same cast film: the strength of better than cast film, cast film heat-sealable than the difference. Varieties blown film production for many reasons, such as low density polyethylene (LDPE), polypropylene (PP), high density polyethylene (HDPE), nylon (PA), ethylene-vinyl acetate copolymer (EVA), etc., where We commonly used low-density polyethylene (LDPE) film blow molding process and common faults brief. Select polyethylene blown film material 1. The selection of raw materials should be made of polyethylene resin particles blown film machine, with the right amount of slip agent, to ensure the opening of the polyurethane film. 2. The resin particles melt index (MI) of not too large, the melt index (MI) is too large, the melt viscosity of the resin is too small, a narrow range of processing, the processing conditions are difficult to control, the difference between the film-forming resin, the film-forming process is not easy ; In addition, a melt index (MI) is too large, the polymer molecular weight distribution is too narrow, the strength of the film is poor. Therefore, it should be the choice of a melt index (MI) is small, and relatively broad molecular weight distribution of the resin material, so that the film can meet the performance requirements, but also ensures the processing characteristics of the resin. Blown polyethylene film is generally used in the melt index (MI) between 2 ~ 6g / 10min range of polyethylene materials. Blow molding process control points Blown film process is as follows: a material feed hopper → plastics extrusion blow cooling air ring traction → → herringbone traction roller traction splint → → → film winding corona treatment, however, worth noting that performance with the production of blown film process parameters cycloid reducer has a great relationship, and therefore, in blown film process, we must strengthen the control of process parameters, specification process operation, to ensure smooth production and to obtain high-quality film products. Polyethylene blown film production process, mainly doing the following control of process parameters: 1, the temperature of the extruder blown low density polyethylene (LDPE) film, extrusion temperature is controlled at 160 ℃ ~ 170 between ℃, and must ensure that the head temperature uniformity, extrusion temperature is too high, the resin is easy to break down, and the film is brittle, especially so that longitudinal tensile strength decreased significantly; temperature is too low, then bad resin plastics, not smoothly inflated stretch, low tensile strength of the film, and the surface gloss and transparency is poor, even as the timber ring-like pattern and unmelted nuclei (fish eyes). 2, blow blow-up ratio is more than one production process control points Blown film, is the ratio of post-inflation bubble diameter and not blow the tube between the ring diameter. Blow ratio of lateral expansion of multiple film plastic granulator, the film is actually a transverse stretching, stretch plastic molecules will have some degree of orientation, blow-up ratio increases, so that the lateral strength of the film to improve . However, the blow-up ratio can not be too large, or likely to cause bubble instability, and the film is prone to wrinkles. Therefore, blow-up ratio should be compared with the traction with the appropriate job, in general, low density polyethylene (LDPE) film blow up ratio should be controlled at 2.5 to 3.0 is appropriate. 3, draw ratio is the draw ratio refers to the ratio of the traction speed of the film and the extrusion rate between the pipe ring. Draw ratio of the longitudinal stretching ratio, the film having the orientation in the direction of taking the lead. Draw ratio increases, the longitudinal strength will also increase, and the thickness of the thin film, but if the traction ratio is too large, it is difficult to control the thickness of the film, the film might even pull off, resulting in broken membrane phenomenon. Low density polyethylene (LDPE) film draw ratio is generally controlled between 4 and 6 is appropriate. 4, also known as the frost line dew point dew point, referring to the viscous flow of plastic into the dividing line of high elastic state. In the blown film process, low density polyethylene (LDPE) extruded from a die mouth when in the molten state, good transparency. When after leaving the die to be cooled by cooling air ring of bubble blow district cooling air at a certain angle and speed slitter head just blown extruded plastic bubble, the high temperature of the bubble contact with the cooling air, the heat will be cold bubble away, its temperature will be significantly decreased low-density polyethylene (LDPE) viscous flow temperature, so that it is cooled and solidified and becomes mold burnt unclear. Taking a dip in the blown film, we can see a clear dividing line between Hu and mold, which is the dew point (or called frost line). In the blown film process, the dew point level has a certain influence on the film properties. If the high dew point, located above the bubble after inflation, the inflation film is carried out in a liquid state, only the blown film thinner, while the molecular orientation is not stretched, then blown film properties close in cast film. Conversely, if the dew point is relatively low, the inflation is carried out in the solid state, this time in a high elastic plastic state, inflation just as the same as the transverse direction, so that the orientation of molecules, enabling a performance blown film close directed film. Service: free installation, one year warranty and lifetime technical support Delivery Time: 20 days (as the case may be) Payment Details: 30% deposit, the balance paid delivery transport: The seller is responsible for shipping companies, Buyer's own pay cash on delivery