The automotive industry is constantly in a dynamic development due to changing market conditions and competition at the global level. It is possible to respond to the aerodynamic characteristics of vehicles, but with innovative and technological solutions. Powstar; With innovative technology and global competitive power offer the best solutions for the automotive industry.
The plastic injection molding process has been around since 1872 and is a process of injecting molten material (typically metal or plastic) into a void or cavity that has been created in a particular shape.
In plastics, the raw material comes in pellet form, can be pre-colored or in either a natural state to be colored by the processor, or mold maker. The natural material is usually colored with a pelleted concentrate that looks much like the base material (resin) but has been formulated with high concentrations of pigment. The color concentrate is typically added to the base resin at a ratio of 25/1, or 4%.
The resin is then gravity fed through a hopper into a heated barrel that contains a reciprocating screw that rotates, homogenizing the color and base resin together changing the color. Once the machine cycle is started, the plastic injection molding process begins. The mold closes and the material is injected out of the barrel under very high pressure, typically 15-30,000 psi, via a hydraulic pump through a hole in the mold (sprue hole), down a channel (runner), through the gate, and into the cavity.
The mold that houses the cavity has cooling channels drilled into it to transfer the heat away much like an engine block, and the material then cools and re-solidifies. Lastly, the mold (or die) opens and the part is ejected. When the part is ejected out of the mold, the steel required to create any undercut design features of the part that prevent it from being removed straight out of the mold need to be dislodged before it can be ejected. This could be threads, holes, or simply a step in the part that traps steel and prevents a straight ejection.
Poly Carbonate Lens Injection
Until the 2000s, automobile headlamps made from "glass" materials, along with the development of mold, injection and coating technologies started to be produced from polycarbonate plastic materials. 2-color PC lens injection technology can be applied in our factory.
In our mono-color injection presses of different tonnage, we produce headlamp body, stop body, bezel and many other small thermoplastic components.
We produce 2,3 or 4 color products in our multi-colored injection presses with PMMA raw material.
BMC (Bulk Molding Compounds) Injection
BMC is obtained by mixing glass fiber and polyester. Can be made in medium size parts, in different colors and specifications. The surface is very strong in terms of smoothness and resistance to high temperatures.