When projects involve corruption-resilient upgrading, the screw programme must start from the real production tasks of the client. PVC and fuel-retarding equipment manufacturers need to organize acid gases, temperature, condensation and shutdown debris into a set of verifiable, calculable and retroactive entry conditions.

It's not absolutely good or bad. Standard schemes are appropriate for simple work, wide material windows and priority projects; the value of a dedicated structure is clear when materials are corrosive, corrosive, hot, sensitious or production requirements exceed the generic boundary. The judgement must be based on data and failure patterns. Calculates the nominal value to be converted to the actual condition. The machine often uses PS as a reference for the gel weight, which should be revised by density when using other raw materials; the weight of the product should be added to the main course, traffic separation and a reasonable buffer. The larger the diameter of the screw, the greater the theoretical capacity, but the pressure of injections per unit area under the same hydraulic pressure or servo system will decline and the resolution of the measurement of the small amount of the aerosol may also be variable.

Site information should preferably include both photographs, short videos and data sheets. Photos are used to identify machine interfaces, screw tails and front-end components, video can be observed to measure, buffer and abnormal sound, and data tables are used to calculate the rate of application, the need for plasticization per hour and the length of stay. If only partial information can be obtained, a list should be provided for confirmation, rather than a tentative condition being a definitive conclusion. The focus of discussion in this paper is on acid gases, temperature, condensation and stationary residues, which must correspond to the customer ' s current production conditions and cannot be cited only for the maximum value in machine samples.

The implementable option is to select the base and surfaces of perishable materials by medium and temperature. The quoted documents should include both the applicable raw materials, the range of recommended voltage, the permitted turn-off and back pressure, the size of the interface, the material and thermal treatment, and the need for re-evaluation when marking subsequent changes to the material or the mould by the client. This would prevent the use of earmarked programmes in completely different conditions.

If the above-mentioned steps are ignored, the most common consequence is that the coatings are inappropriate to decimate or cause electrochemical corrosion. The problems are often manifested in the trial phase of measuring time instability, insufficient stress residuals, buffer drift, unmelted, black spots, colour differentials or increased wear and tear. Continued increase in temperature, back pressure and turn speed at this time may temporarily improve the appearance, but may increase the shearing heat, material degradation and equipment load.

The focus of the validation was on the pyro-points, stripping and clean-up. The test shall use the actual material and representative moulds of the client, retaining the batch number, dry condition, ambient temperature and sample number. When compared to old schemes, equipment, moulds and major process conditions other than screws should be as consistent as possible. Where the information is temporarily incomplete, the pre-selection scope and the list to be confirmed may be provided, but it should not be considered a final commitment. Frozen configurations after completion of acid gas, temperature, condensation and shutdown residues by customers can reduce erroneous orders and facilitate the production, testing, installation and sale of the same version of data.