220+ Verified Coding & Marking Machine Suppliers — CIJ, TIJ, Laser, Hot Stamp & Label Applicators for Date Coding on FMCG, Pharma, Beverage & Industrial Packaging Lines

Which coding technology is best for date coding on PE film flexible packaging?

For flexible PE (Polyethylene) film — the most common substrate in Indian FMCG packaging — CIJ (Continuous Inkjet) with alcohol or MEK-based inks is the standard solution for high-speed lines. The ink bonds well with PE film and dries rapidly without smearing. For low-speed lines (below 30m/minute), TIJ (Thermal Inkjet) with solvent-based cartridges is also effective and offers higher resolution for QR codes. Laser coding on PE film requires specific optimization — CO2 laser can mark PE but the ablated area is very thin and legibility depends on contrast between ink and substrate; it works better on white or coloured PE film than on transparent film.

What is the FSSAI requirement for date coding on packaged food products?

Under the Food Safety and Standards (Packaging and Labelling) Regulations 2011 and Legal Metrology (Packaged Commodities) Rules 2011, all packaged food products must display: Date of Manufacture (Month and Year for products with shelf life above 3 months; Day, Month and Year for shelf life below 3 months); Best Before or Use By date; Batch or LOT number; Name and address of the manufacturer; MRP (Maximum Retail Price) in the format 'MRP Rs X inclusive of all taxes'. All these must be legible and indelible — smeared, missing, or illegible codes constitute a regulatory violation subject to FSSAI action including product recall and financial penalties.

What is the FSSAI requirement for date coding on packaged food products?

Under the Food Safety and Standards (Packaging and Labelling) Regulations 2011 and Legal Metrology (Packaged Commodities) Rules 2011, all packaged food products must display: Date of Manufacture (Month and Year for products with shelf life above 3 months; Day, Month and Year for shelf life below 3 months); Best Before or Use By date; Batch or LOT number; Name and address of the manufacturer; MRP (Maximum Retail Price) in the format 'MRP Rs X inclusive of all taxes'. All these must be legible and indelible — smeared, missing, or illegible codes constitute a regulatory violation subject to FSSAI action including product recall and financial penalties.

What is the difference between CIJ and TIJ coders?

CIJ (Continuous Inkjet) produces a continuous stream of ink droplets, electrically charges and deflects selected droplets to form characters — it is non-contact, works at high speed (up to 900m/minute), prints on virtually any surface, and is the dominant technology for high-speed FMCG production lines. It requires daily maintenance (startup/shutdown cycles, periodic purging) and has significant ink and solvent consumption. TIJ (Thermal Inkjet) uses cartridge-based print heads that fire ink on demand (like a desktop inkjet printer) — it offers higher resolution (300-600 DPI vs 150-300 DPI for CIJ), minimal maintenance (cartridge replacement), zero daily flushing, but is limited to medium line speeds (below 120m/minute) and has higher per-character ink cost than CIJ at high volumes.

Which laser wavelength is appropriate for marking on different materials?

CO2 laser (10.6 micron wavelength): absorbs well in organic materials — excellent for paper, cardboard, wood, rubber, glass, most plastics (PET, ABS, PVC, acrylic), and natural materials. Poor absorption in metals — use for food packaging, paper labels, pharmaceutical cartons, and plastic bottles. Fiber laser (1.06 micron wavelength): absorbs well in metals and some dark plastics — excellent for stainless steel, aluminium, copper, brass, titanium, anodised metals, and dark engineering plastics. Poor absorption in transparent plastics and most light-coloured materials. Green laser (532nm wavelength): useful for transparent materials, gold, and some sensitive electronics where IR lasers cause thermal damage. UV laser (355nm wavelength): 'cold' marking for heat-sensitive materials, fine electronics, and medical devices.

What IP rating is required for coding machines in food and beverage production?

IP ratings for coding machines in food production environments follow cleaning requirements: IP54 — general dust protection with water splash protection; adequate only for dry food production areas away from direct water. IP55 — protected against low-pressure water jets from any direction; minimum for most food production areas with periodic cleaning. IP65 — protected against high-pressure water jets; required for beverage, dairy, and wet food production where daily hose-down cleaning is standard. IP67 — protected against temporary immersion; for environments with flooding risk. IP69K — protected against high-pressure, high-temperature steam jet cleaning; required for meat processing, dairy, and pharmaceutical cleanroom environments with aggressive steam cleaning protocols.