[Scene definition] How to judge a spiral ' s ability to plasticize when the storage time is too long is based on the actual production scene of the plant, and not solely on the diameter or price of the screw. It is recommended that the target metronome, storage time, refuelling frequency and OEE be first collated and then that the data be observed at single, hourly and three scales per 10,000 items. The aim of this step is to establish comparable old programme benchmarks so that subsequent screw changes can be supported by data.

The easiest to ignore is plasticization, cyclical bottlenecks and long-cycle drift. The plant should establish a strict ranking of the various feedstocks, determine the boundary by the highest-risk condition, and establish a strict ranking of the various feedstocks by the highest-risk condition. Vendors can make retroactive trade-offs between interoperability, earmarking and cost when there are clear values for product weight, daily production, customer quality caps and allowed stop times.

The main line in this case [design focus] is defined by a stable output rather than a short-term maximum speed. In geometrical and material programmes, the rudders should be checked, speeds allowed and screw cores should be allowed, so that production capacity does not increase at the expense of mechanical safety; and the heat should be cut with gradual compression control and sufficient access should be maintained for gas escape. The final solution would also need to be compatible with the wear and tear of the cylinder, the drive, the physical velocity and the current cleaning process, and would not cover up co-operation or process problems with a single high-level material.

The new [comparison-valid] program proposes a minimum of 48 hours of continuous operation, with a 100-mode extraction for each stabilization phase, and records the screw-back load, back pressure stability and daily production. The test shall measure both the temperature of the entropy and the temperature shown in the drums, confirm the contribution of the shearing heat and maintain sufficient time at the normal upper load to observe the twist, temperature and measure drift. If only the first one is checked, it is easy to miss the risks associated with heat drifting, material stoppage, reversal loop return and prolonged wear and tear.

When the [stabilized production] spiral is shaped, spare parts should be released early when the trend is close to the threshold, before the quality is out of control, and the abnormal twists, storage time overtime and material rebounds should be set as an early overhaul signal. The time of storage, back pressure, screw velocity, noise and mass of the product shall be recorded in a uniform manner in the shift. When the above indicators change at the same time, the mechanical gaps and the state of the raw materials should be checked before the process is adjusted to avoid the use of parameters to compensate for hardware degradation.

The cost statement [comprehensive cost] cannot simply be a screw price, and the cost of inventory, maintenance and rust prevention should be calculated for the back-up screw, compared with the cost of emergency delivery, and the test moulds, cleaning materials, transitional materials and bad goods should be accounted for at real purchase prices. It is recommended that the cost per 10,000 eligible items be exported simultaneously, the cost per 1,000 operating hours and the estimated number of return months. When new programmes reduce waste, refuelling or sudden shutdowns, higher initial inputs are often offset during production.

The [Closed Ring Management] will eventually include drawing numbers, screwdriver materials, heat treatment, critical dimensions, portable tubes, process windows and acceptance data in the curriculum vitae cards. It is proposed to set warning limits for the thermozones of the cylinders and for the drive loads, instead of looking only at averages, and to set the abnormal twists, storage time overruns and material volume rebounds as early correction signals. When there is a clear change in the feedstock formulation, retrospective ratio, product structure or target node, the applicable boundary of “the determination of the plasticization capacity of the screw when the material is too long” should be reassessed, rather than defaulting on the old conclusion being permanently valid.

Title of article: Guidelines for the selection of a plastic plant for end-notes