Project Background
Industry Sector: Food and Beverage Packaging / Canned Food Packaging
Coding Material: Tinplate can bottom (commonly used for 280g eight-treasure porridge, canned meat, etc.)
Compliance Standards: Meets the new requirements of GB 7718-2025 regarding the clarity and durability of markings
Equipment Configuration: CYCJET fiber laser marking machine (optional 20W / 30W)

Industry Challenges
Tinplate is widely used in the food canning and protein beverage industries due to its excellent sealing properties. However, with the upcoming implementation of the national standard GB 7718-2025, the regulations impose stricter audit standards on key information such as production dates and shelf lives on food packaging, requiring them to be "clear, conspicuous, and not easily rubbed off." Traditional inkjet printing (CIJ) technology faces the following significant challenges on tinplate surfaces:
1. High-temperature sterilization leads to blurred lettering: Tin cans undergo high-temperature, high-pressure steam sterilization at 121℃ or higher after filling. Conventional inks are prone to smudging and spreading in humid and hot environments, making it difficult to meet the clarity requirements of the new regulations.
2. Mechanical friction causes label detachment: Frequent collisions and hard friction between tin cans during high-speed conveyor belts, packing, and transportation can easily cause localized detachment of inkjet lettering, leading to the failure of traceability later.
3. High frequency of routine maintenance: White ink or special high-temperature resistant inks contain pigment particles that are prone to sedimentation after prolonged standing, leading to frequent printhead clogging and increasing production line downtime for maintenance.
CYCJET Fiber Laser Coding Solution
Addressing the physical properties and compliance requirements of tinplate, CYCJET provides enterprises with a fiber laser marking machine solution. This solution utilizes physical etching to replace traditional chemical inks, accurately achieving "full information coding" on the bottom of the container.
Core Technical Advantages:
· Non-contact physical etching for permanent marking: By precisely controlling pulse frequency, the fiber laser (1064nm wavelength) instantly vaporizes the protective varnish layer on the tinplate surface, revealing the bright, natural color of the underlying metal. The markings withstand 121°C sterilization, resist mechanical abrasion, acids, and alkalis, ensuring truly tamper-proof traceability throughout the product's entire lifecycle.
· High-contrast visuals meeting new regulatory standards: Laser-engraved Chinese characters, English text, and numerals feature sharp edges and high contrast. They remain clear and distinct on both dark and light-colored can bottoms, fully complying with GB 7718-2025 audit requirements for label legibility.
· Industrial-grade Linux system supporting high-speed "flying" marking: Equipped with an embedded Linux operating system, the device ensures stable, crash-free operation. It supports dynamic "on-the-fly" marking integrated with high-speed filling lines and features one-touch generation of high-density QR codes, providing a technical pathway for future upgrades to GS1 2D code traceability standards.
· Zero consumables and maintenance-free: The core fiber laser generator boasts a lifespan of up to 100,000 hours. Requiring no ink or cleaning agents during operation and offering "instant-on" functionality, the system helps factories eliminate the "bottomless pit" of consumable costs and manual maintenance expenses.

Implementation Results
Following the deployment of this three-line tinplate coding solution on the production line, the company achieved its expected outcomes in terms of both regulatory compliance and economic efficiency:
· Zero compliance risk: The markings completely eliminated issues such as blurring or detachment caused by high-temperature sterilization and oil exposure, ensuring successful passage of packaging compliance audits.
· Significant reduction in total costs: By achieving zero-consumable operation, the company eliminated the recurring expenses of purchasing ink cartridges and cleaning agents; the initial investment in the equipment was fully recouped within six months through these savings.
· Substantial boost in production efficiency: The laser system eliminated the tedious daily tasks of cleaning printheads and clearing ink lines, resulting in a reduction of unplanned production line downtime by over 95%.
Summary
In light of the stringent requirements for food labeling set forth by the new GB 7718-2025 standard, fiber laser marking machines have emerged as the prevailing choice in the packaging coding industry. CYCJET fiber laser marking machines not only ensure high-definition, permanent compliance for tinplate packaging but also enable manufacturers to achieve genuine cost reductions and efficiency gains amidst fierce market competition.
About CYCJET:

CYCJET is the brand name of Yuchang Industrial Company Limited. As a manufacturer, CYCJET have more than 19 years of experience for R& D different types of handheld inkjet printing solution, Laser printing solution, and portable marking solution, High Resolution Printing solution in Shanghai China.
Contact Person: David Guo
Telephone: +86-21-59970419 ext 8008
MOB:+86-139 1763 1707
Email: sales@cycjet.com
Web: https://cycjet.com/
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