Meaning
Mark creation on molded polymer surfaces using concentrated laser energy achieves permanent part identification and tracking. This process modifies the polymer substrate through carbonization, ablation, or foaming, ensuring the identification mark remains legible for the duration of the component lifecycle. No external ink or physical label is needed, eliminating risks of chemical degradation, peeling, or surface contamination in sensitive production environments.
Marking Method
High-speed beam deflection across the plastic surface uses specific wavelengths, typically infrared or ultraviolet light, to alter the material color or texture. Correct selection of wavelength and beam speed prevents melt accumulation and thermal damage around the engraved graphics. When asset tag laser engraving occurs on carbon-black filled resins, it produces high-contrast, light-colored marks through a controlled foaming reaction, yielding a durable mark without removing material.
Adjusting the laser frequency minimizes the heat affected zone on the molded part.
Polymer Impact
Heat from the marking beam can degrade thin-walled sections or induce localized stress in amorphous resins. Fillers and additives in the polymer matrix can also affect how the laser light is absorbed. The modification of the surface can alter local chemical resistance, meaning that engraved regions must be positioned away from areas that experience regular solvent exposure during cleaning protocols.
Verification Check
Machine vision systems scan the finished pattern to confirm the contrast and legibility of the generated matrix. A scanner evaluates the graded score against reference levels to guarantee error-free read rates in downstream assembly lines. Poor beam calibration yields fuzzy boundaries and low contrast, causing scanning failures and part rejection.
