Understanding whether a product bubble is a moisture gas or a condensed hole requires that the physical flow of material structures, heat history and equipment be placed on the same chain of causality. The key mechanisms for this theme are: transparency bubbles, volatile gases and thick wall constrictions, which can be distinguished by location and profile. 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, an input list should be established around “the product bubble is a moisture gas or a condensed hole”, including feedstock suppliers and batches, technical data sheets, dry conditions, the ratio of colored mothers to retrofits, specifications of equipment to screws, product and flow weights, the temperature of moulds and existing defects. Materials, colour mothers, retrospects and assistants should be described in terms of their respective sizes and retentions; out-of-view photographs of defects and corresponding conics should also be preserved. The main risk of the subject is that all the holes are attributed to the drying that ignores the pressure, the water freeze and the wall thickness design. 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 verification of whether a product bubble is a moisture gas or a condensed hole suggests a repeatable approach: anatomical observation, a heater test and a determination of water content, pressure, watering and location. For material at risk of degradation, a stop-time gradient sample is also maintained to compare colour, scent, viscosity and mechanics. 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.