Strictly Control The Temperature of Each Heated Part of The Crate Mould
In production, it is often encountered that a heating coil is damaged or the heating control portion is out of control, and the temperature of the Crate Mould(FURNITUREMOULD) is drastically changed to cause chromatic aberration. The chromatic aberration caused by these causes is easy to determine. Typically, the heating ring is damaged and the chromatic aberration is accompanied by uneven plasticization, and the heating control portion is out of control and often burns due to product spots, severe discoloration or even coking. Therefore, the heating components should be inspected frequently during the production process, and the heating components are found to be damaged or out of control and replaced in time to reduce the occurrence of such chromatic aberration.
When the injection molding process parameters need to be adjusted for non-chromatic aberration reasons, the injection molding temperature, back pressure, injection cycle and masterbatch addition amount should not be changed as much as possible. Adjustments also need to observe the effect of changes in process parameters on color. If color difference is found, it should be adjusted in time.
Avoid high injection speeds, high back pressures and other injection molding processes that produce strong shear to prevent chromatic aberrations caused by local overheating or thermal decomposition. The temperature of each heated portion of the barrel is strictly controlled, particularly the nozzle and the heated portion near the nozzle.
It is also necessary to know the trend of the color of the product as a function of temperature and masterbatch before performing the color difference adjustment. The masterbatch of different colors varies with the temperature or color masterbatch of the product, and the color change law of the product is also different. The color change process can be used to determine the law of change. Unless the color change of the color masterbatch is known, it is not possible to quickly adjust the chromatic aberration, especially when using the color tone produced by the new masterbatch.