Laser-Marking Masterbatch — Cannot Laser-Mark on Dark or Colored Plastic

1. Problem

A part needs a permanent, high-contrast laser mark (barcode, batch code, logo) and the base resin does not respond — the mark is faint, blurred, or invisible.

2. Symptoms

• Faint or invisible mark on black or dark parts
• Blurred or low-contrast mark on light parts
• Mark burns through instead of marking cleanly
• Inconsistent mark across production batches

3. Investigation (Before Prescribing an Additive)

• Identify laser wavelength (1064 nm Nd:YAG / fiber is most common) and power window.
• Classify the marking goal — dark mark on light background or light mark on dark background.
• Check whether color must remain unchanged in unmarked areas.
• Check regulatory or food-contact restrictions.

4. Candidate Masterbatch Family

One family commonly evaluated is Laser-Marking Masterbatch — specialty pigments (antimony-based, non-antimony, or bismuth-based) that absorb the laser wavelength and create a contrasting mark without heavy engraving. Chemistry depends on background color and target contrast.

5. Polymer Considerations

Compatible carriers exist for most engineering and commodity resins. High-loading may shift the base color slightly.

6. Application Examples

• Electrical and electronic housings
• Medical device parts
• Consumer packaging codes and traceability

7. RFQ Mini Technical Specification (9 Fields)

Under Application-First Selling v1.0 and Problem-First Discovery v1.

Continue Your Path

• Submit RFQ → /quote