The flow pattern effect is also a relatively hot process for electronic cigarette shells. It is mainly made of PC/ABS material. This article will briefly understand its production principle.
1. PC/ABS material
PC/ABS alloy is a thermoplastic blended from PC (polycarbonate) and ABS (acrylonitrile-butadiene-styrene terpolymer). It combines the excellent properties of the two materials and can not only improve The heat resistance and tensile strength of ABS can also reduce PC melt viscosity, reduce material internal stress, improve product processability, and improve low-temperature impact resistance and chemical resistance. Therefore, it is widely used in automobile parts, home appliance casings, electrical appliance casings, consumer electronics and other fields.
2. Principle of making flow pattern effect
The flow pattern effect is also called imitation marble texture. Its main principle is to use high melting point masterbatch. During the extrusion process, the high melting point masterbatch will form different flow rates with PC and ABS, and the pigments will be distributed irregularly, eventually forming flow patterns. Effect.
For example, the common molding processing temperature of PC/ABS is 230-240°C. Within this temperature range, the general masterbatch carrier resin (such as PE, EVA) will completely melt, and will form during the blending and extrusion process. By unifying the flow rate, the pigments will be evenly mixed and distributed.
If a masterbatch with a high melting point carrier resin is used, such as PA66 with a melting point of 260°C, which does not completely melt at the molding processing temperature of 230-240°C, the PC can be adjusted by adjusting the injection molding process parameters and the amount of masterbatch. /ABS flow effect with different colors and color shades.
Electronic atomization and HNB products are both new electronic products. Although their structures are small, they incorporate a variety of materials, surface treatments, chip electronics and other technologies. Moreover, atomization technology is constantly changing, and the supply chain is gradually improving.