The evaluation of “parameters to be checked when unmelted particles appear” should correspond to the three sets of evidence on the state of the particles, their expression and the quality of the finished product. The key mechanisms of this theme are that unmelted may be caused by inadequate plasticization, hot zone distribution, rotation, back pressure, screw wear or large particles. Appearance defects are often caused by a combination of moisture, gas, materials, plasticization, moulds and equipment, and must be distinguished by evidence. 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, the parameters around which “unmelted particles should be checked” should first be included in the input list, including feedstock suppliers and batches, technical data sheets, dry conditions, colour mother and respirator ratios, equipment and screw specifications, product and fluid weights, the temperature of the mould and existing defects. The test shall retain the raw material COA, the equipment type, the screw diameter, the single total volume, the cycle, the environmental humidity and the version of the parameters to ensure retroactive results. The main risk of this topic is that a simple increase in the end temperature may cause surface overheating and solid beds are still not fully melted. 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. When twisting, measuring time changes at the same time as the actual melting temperature, the material, feed and wear should first be sorted out and not compensated by an increase in temperature alone. 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 verification of “parameters that should be checked when unmelted particles appear” suggests a repeatable method: examination of cross-sections, measurement time, twisting, actual melting temperature, screw size and particles. For custom screws or surface programmes, the smelting temperature level, twirling, capacity, fibre retention and full life cost should be verified simultaneously. 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.