Dalian film blowing unit operation regulations, how much you know

Dalian film blowing unit operation regulations, how much you know

Blown film machine is running, check has been completed, open the circulating water pump (host tank pump) and the main pump or cold water or cooling tower, at the same time open the throat cooling water switch. When, when district heating insulation (constant) 0.5 ~ 1.5 h, (decision) according to the volume of equipment. According to process requirements, timely start the machine. Boot when temperature and heating time (2 ~ 4 h) meet the requirements, the manual rotation screw, if can rotate, can be turned on. Check the belt tightness, meet the requirements. A mesh or perforated plate (die head joint or tee) must be clear in time change. If the new die head must tighten die head and its connecting screws, screw must conform to the requirements of the strength grade. Check whether the screw to correct (counterclockwise). The check has been completed, start the host (multimachine co-extrusion, can in turn start). Note: below the mouth mould ahead or ban someone, to prevent die out of heat or thermal burns. If there is no material in the cylinder, the screw rotation speed should be controlled in 3 ~ 10 RPM, stay out from mouth mold material or after discharge the compressed air, can according to the technological requirements to speed up, speed up the process, observe the process parameters, such as pressure, current and temperature change. If there is sound, current, abnormal pressure change or exceed the requirements, must stop the machine immediately to check and report to, not out, can not boot. Low speed condition, according to the craft route through membrane, adjust the width and thickness and thickness uniformity, and then speed up, make the product width, thickness and evenness, mechanical parameters (blown film, drawing, etc.) meets the requirements. Shall be used for cleaning mode, copper soft tools such as shovel or wood, rigorous use hard tools, lest hurt die lip and the surface of the flow channel.

Operators must be familiar with equipment, absorption operation. Electrical maintenance, must be someone to monitor, and in the relevant place warning signs. Maintenance equipment, relevant switch is closed, and placed them. Ban people or objects close to the high temperature parts, especially the bare heater and its terminal. Volatile flammable items according to the relevant requirements for use, fire prevention pollution prevention. Employees will use the fire extinguishers, fire control knowledge, and clear the use what kind of fire extinguisher, know knowledge, to escape the workshop should have a clear indication to escape. Need to climb, safety protection measures shall be required. Production personnel must pass, production operation, product requirements, assessment of safety knowledge training.