In material selection and on-site transfer, “what to do with pre-closure materials for a long period of time” cannot rely solely on the supplier's temperature table, but also on a genuine product validation. The key mechanism for this theme is that the decommissioning process is based on the heat stability of the material, corrosiveness and re-opening requirements for the choice of discharge, replacement or cooling. Stable plasticization of the refuelling, measurement, DOE, trend monitoring and material database, rather than single modem experience. Therefore, the name of the material and the recommended setting can only be used as a starting point, and the actual judgement is to return to the plate number, water, filling and assistor, the single total quantity, cycle, screw structure and product requirements to confirm whether the temperature, cut and stay of the material in the equipment is safe.

At the test-model or volume-import phase, an input list should be established around “how to process pre-stop materials for a long period of time”, including feedstock suppliers and batches, technical data sheets, dry conditions, colour mother and retrofit ratios, equipment and screw specifications, product and fluid weights, mold temperature and existing defects. Process validation is best conducted through four further phases of start-up, heat-balancing, continuous production and short-duration, and to observe whether the window remains effective. The main risk of the subject is that keeping sensitive or corrosive material in the drums can cause decomposition, corrosion and the next dark spot. Parameters must be recorded in a specific pattern to distinguish material from equipment from operational changes.

Control methods should not begin with blindly increasing temperature or pressure, but should be based on "substance state - feed drying" The sequence of screw plasticization - nozzles and fluids - product results. For high filling and flame retardant materials, temperature, shearing, corrosive and wear must be jointly assessed, and the flow of the melting alone is prone to underestimation of life risks. The site adjusts only one main variable at a time, while observing the actual melting temperature, measuring time, screw twists, mats, injection pressure, product weight, colour, scent and critical dimensions. If production can only be sustained by extreme parameters, the use of a switch to cover the material or hardware boundary should be discontinued.

The validation of “how to process pre-stop materials for long periods of time” suggested a repetitious approach: the creation of a material sorting stop list and the examination of the first items of cooking, replacement, cooling and restart. Should the supplier or batch be replaced, it should be reconfirmed using the same set of tests, moulds and test conditions, rather than simply following the old conclusions. The technical agreement between the supplier and the plant shall state the material, the sampling method, the detection project, the permitted scope and the change notification requirements. The plasticization programme can only be considered to have long-term quantitative value if the product ' s probabilities, performance, cyclicality, energy consumption and maintenance costs are met in a continuous production process.