Appearance l Electronic Cigarette Flow Pattern Effect Shell Material and Technology

The flow pattern effect is also a relatively hot process for electronic cigarette casings, which is mainly made of PC/ABS materials. This article will briefly understand its production principle.
1. PC/ABS materials
PC/ABS alloy is a thermoplastic made by blending PC (polycarbonate) and ABS (acrylonitrile butadiene styrene terpolymer). It combines the excellent properties of the two materials, not only improving the heat resistance and tensile strength of ABS, but also reducing the viscosity of PC melt, reducing material internal stress, improving the processability of products, improving low-temperature impact resistance, and chemical resistance. Therefore, it is widely used in fields such as automotive components, home appliance casings, electrical appliance casings, and consumer electronics.
2. Production principle of flow pattern effect
The flow pattern effect, also known as imitation marble texture, is mainly based on the use of high melting point color masterbatches. During the extrusion process, the high melting point color masterbatch will form different flow rates with PC and ABS, and the pigment will be irregularly distributed, ultimately forming a flow pattern effect.
Appearance l Electronic Cigarette Flow Pattern Effect Shell Material and Technology
For example, the common molding temperature for PC/ABS is 230-240 ° C. Within this temperature range, general color masterbatch carrier resins (such as PE and EVA) will completely melt, and a uniform flow rate will be formed during the blending and extrusion process, resulting in a uniform mixing and distribution of pigments.
If high melting point carrier resin color masterbatch is used, such as PA66 with a melting point of 260 ° C, which does not fully melt at the molding processing temperature of 230-240 ° C, by adjusting the injection molding process parameters and the amount of color masterbatch, different colors and color shades of PC/ABS flow pattern effects can be adjusted.