UV Laser Marking Machine for Glass

Introduction

UV laser marking at 355 nm enables crisp, permanent, and micro-fracture-free identification on glass using “cold” photochemical reactions. The tiny spot size and low heat-affected zone are ideal for tempered glass, borosilicate vials, ampoules, syringes, smartphone cover glass, cosmetic bottles, and optical components. Marks such as UIDs/QR/DM codes, logos, graduation scales, and anti-counterfeit micro-text appear frosted/whitish with excellent readability—without spalling, cracking, or compromising transparency when parameters and focus are optimized.

Working Principle & Process Flow

A DPSS UV source generates a 355 nm beam that is steered by high-speed galvos and focused through an F-Theta lens. On glass, short-wavelength photons drive photochemical color-center changes and micro-surface texturing, producing high-contrast frosted marks with minimal thermal stress. The operator loads vector art or variable data in the marking software, selects field lens, sets power/speed/frequency, and executes the job. For cylindrical parts (vials/ampoules), rotary axes ensure uniform marking; for in-line production, encoders/IO synchronize with conveyors. Optional vision systems perform code grading and position correction; dust extraction maintains optical cleanliness.

Applications & Benefits — Glass Marking

Applications

Pharma packaging: graduation/lot/expiry on vials, ampoules, syringes, cartridges.
Food & beverage: brand logos, batch/UID on bottles and jars (soda-lime/borosilicate).
Consumer electronics: cover glass, camera windows, and connectors with micro text/2D codes.
Automotive & appliances: tempered glass panels, switches, and indicator marks.
Optics & instruments: scales on slides, cuvettes, lenses, and labware.

Benefits

Cold processing—minimal micro-cracks, no chipping; preserves strength and clarity.
High-contrast frosted marks readable by humans and vision scanners.
Non-contact, consumable-free, and highly repeatable for serial/UID/GS1 codes.
Supports rotary/in-line systems for high-throughput pharmaceutical and FMCG lines.

Key Features

355 nm UV source (3–15 W) with ultra-fine spot for glass frosting and micro-engraving.
F-Theta lenses for fields from ~70×70 to 200×200 mm; precise focus control for edge quality.
High-speed galvos with stable beam quality for dense text and small DataMatrix/QR codes.
Rotary axis and vision alignment options for vials, ampoules, and bottles.
Automation I/O, encoder sync, and variable data (lot/date/UID/GS1) for in-line coding.

Where to Buy in India

Techno Laser supplies UV laser systems optimized for glass—covering pharma vials, beverage bottles, appliance glass, and precision optics. The team helps select optics, power, and rotary/conveyor integration, and sets safe process windows to avoid subsurface defects. Application trials, operator training, and service/AMC ensure stable production and consistent code grades on fast lines.

Maintenance & Safety Tips

Checklist Technolaser

Monthly / Quarterly

Keep F-Theta lens and protective window spotless; verify galvo scan and focus height.
Check rotary axis run-out for cylindrical glass; maintain exhaust filters and airflow.
Back up job layouts and serial rules; keep firmware/software current per advisories.

Operating Best Practices

Use proper enclosures and interlocks; align with laser safety class and labeling norms.
Optimize energy density to avoid subsurface cracks; confirm with bend/anneal tests if required.
Maintain stable fixturing and implement vision checks for code grade (ISO/ANSI).

FAQs — UV Laser Marking Machine for Glass

Q1 Will UV laser marking weaken tempered glass?

When parameters and focus are optimized, 355 nm marking produces minimal thermal stress and does not significantly reduce strength. Validate on your glass grade with sample tests.

Q2 Can we mark around the curvature of small vials?

Yes—use a rotary axis synchronized with the galvo. Correct lens choice and focus tracking maintain uniform frost and code readability around the circumference.

Q3 What field size gives the best edge quality?

Smaller fields (e.g., 70×70 mm) provide a tighter spot and highest edge quality; larger fields increase coverage but slightly increase spot size—select per artwork and resolution needs.

Q4 How do we avoid chipping or flaking on soda-lime bottles?

Use lower power/higher speed with multiple passes, precise focus, and clean optics. Verify with tape/polish tests; adjust hatch spacing and frequency to minimize stress.

Q5 Can UV marks be removed or altered?

Marks are permanent surface texturing on glass and cannot be wiped off. Alteration is difficult, which supports anti-counterfeit and traceability use cases.

Get in Touch

Technolaser • We’re here to help

Company

Techno Laser

Phone

+91 82000-09229

Chat on +91 82000-09229

Email

technolaser11@gmail.com

Address

05, Sanskar Industrial Estate -2 , In side of Pavan Industral Esate Gate No -2 ,Opp Gopal Charan Estate Bakrol ,Ahmedabad - 382430, Gujarat, INDIA.

Website

technolaser.in

9+3 = ?

UV Laser Marking Machine for Glass