When the project involves the production of multi-coloured toys, the screwdriver programme must start from the customer ' s real production mission. Toy machine distributors need to organize multi-colour, multi-material, frequent model changes and cost controls into a set of verifiable, calculable and retroactive input conditions.

The name of the industry itself is not an optional parameter, but it points to a quality focus and production rhythm. Car projects focus on long-term stabilization and traceability, medical projects on cleanliness, packaging projects on high speed, optical items on low pollution and low stress. Plant manufacturers should translate these industry requirements into verifiable screw and process indicators. 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.

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. The focus of the discussion here is on multi-colour, multi-material, frequent-modulation and cost control, which must correspond to the customer ' s current production conditions and not be limited to the maximum values in machine samples.

In the context of this project, it is proposed to adopt the line of “a smooth front-end and clean-up screw surface”. First, to determine whether the available data support the choice, then to calculate the volume of reductive, pressure and plasticization, and finally to discuss the geometry, front-end components and material handling of the screws. If the standard formula is able to cover the window, priority should be given to the standard configuration; the risk of increasing the consumption of clean-up equipment in the event of retorture and overmelting still exists, with a dedicated structure proposed and an indication of the increased costs, deadlines and expected benefits.

The cost of the misconfiguration is not only the screw itself, but also the cut-off, the waste of raw materials, the testing of molds, the delay in delivery and the credibility of customers. Precautionary measures around the use of dead end and overmelting can increase the consumption of clean-up materials, which is more economical than re-routing in the event of a problem; the vendor can then move from a mere offerer to a partner capable of taking on technical screening.

It is recommended that clients set clear upper and lower limits around colour change time, clean-up consumption and colour differentials, rather than just " running well " . Quantification criteria may include measurement of time fluctuations, extremely poor product weights, number of black dots, change time, hourly production or ton wear and tear, with specific projects choosing indicators that really affect business outcomes. The sales proposal should answer three questions at the same time: why this selection was made, which conditions had changed and which were re-selected, and how the customer validated the results. Clearing these three questions would make it possible for multi-colour production of toys to move from a trade in accessories to a traceability technology project.