Plastics are high-molecular-weight polymers composed primarily of carbon, hydrogen, and oxygen. Laser marking works by using laser energy to break molecular chains on the plastic surface, removing elements such as hydrogen and oxygen to create a permanent color change. When applied to dark-colored plastics with a low-power laser, this process produces high-contrast white text and graphics. The marked area is characterized by uniform coloration, a smooth finish flush with the substrate surface, and excellent durability, though the final contrast can be influenced by the base material’s original color. This technology is widely employed on white or light-colored polymers such as ABS, PC, PE, and PBT.
To achieve clear, permanent white identification on dark plastic surfaces, we provide specialized masterbatch solutions compatible with fiber lasers. Through optimized formulations, we ensure the marked area offers excellent contrast, uniformity, and adhesion strength, meeting requirements for product traceability, brand marking, and compliance coding.
Our laser marking masterbatch is suitable for a variety of products, including injection molding, hollow blow molding, and thick-walled product extrusion. We can also provide masterbatch formulations specifically designed for wire and cable extrusion based on specific applications. Customers can choose between pure functional laser marking additive masterbatches or multifunctional integrated masterbatches composed of specific carrier resins, functional additives, and custom colors, achieving excellent marking results while meeting the basic coloring requirements of the final product.