Plastic packaging with extrusion molding operation

Packaging steel strip manufacturer to introduce the plastic packaging with extrusion molding operation considerations ( 1) Machine with filling material with teach than we will strictly control, to ensure the machine with the tensile strength. ( 2) Barrel temperature control, from charging to homogenize the paragraphs should be gradually improved. Mould temperature should be equal to or slightly below the machine Jane's highest temperature. ( 3) Pack material plasticizing, extrusion machine tube and filter, porous plates with before net mesh and layer should be as raw materials and working conditions to decide; Mesh should be greater than 80 mesh. ( 4) Forming die structure is right Angle type, discharging mouth face from cooling water level is 150 - 250mm。 Production should be in accordance with the requirements of products the width dimension of the appropriate adjust the distance of the two dimensions. ( 5) Extrusion of the strip should be perpendicular to the surface of the water into the sink. If the strip partial width, distance should be appropriately increase the mold to the liquid surface or increase the speed of traction tension roller; If less than, the width of the strip size should be to reduce the distance or appropriate to the liquid surface of the mould could be reduced by traction drawing roller speed. When necessary, also can through adjusting the screw speed to change the size of the amount of liquid extrusion, adjusted the width of the belt. ( 6) The temperature of the cooling water control in 25 Within the scope of 40 ℃. ( 7) Molding mold gate clearance adjustment should be slightly smaller than the strip thickness, production should be set before driving, the gap in production can be fine-tuning appropriately according to the thickness requirement. ( 8) If heating the oven belt tensile, should put in the oven temperature is divided into three segments, with imports of segment had higher temperature, lower outlet temperature. Note with stretching position, if the import section of tensile, explain pick-up moderate oven temperature on the high side; If take in exports began to stretch, low temperature and material temperature inside oven; If the belt is expected to moderate oven temperature is appropriate, with tensile point location should be in the oven in the middle. ( 9) Note with stretching, finalize the design and winding speed should be in sync. Want to have more constant tension band in the operation of the. ( 10) Table 13 - 1 barrel temperature control of a relatively fixed temperature point, the operation should be according to the formula ratio of each raw material components in the decision. For example, the temperature control of the filling material in the recipe is more, just less than filling material in the formula of slightly lower temperature control; Drawing and extrusion speed are correspondingly appropriate slowly. Tensile strength is less than the period of their products less with products.