Food Grade SUS420J2 Zigzag Film Cutting Knife with HRC 50-55 Hardness and Corrosion Resistance for Packaging Machines

The ZHIJING Food Grade SUS420J2 Zigzag Film Cutting Knife is a hygienic replacement blade designed for film cutting stations on food packaging machines where washdown cleaning and corrosion resistance are as important as cutting performance. Biscuit, cracker, snack and confectionery lines are often cleaned with water, steam and sanitizing chemicals, and standard high speed steel knives can develop rust and pitting that contaminate the cutting zone and spoil the product contact surface. This knife is manufactured from SUS420J2 stainless steel, a hardenable martensitic grade that offers good corrosion resistance together with a hardness that keeps a dependable cutting edge on flexible packaging film.

Each blade is hardened and tempered to HRC 50-55, then precision ground into a uniform zigzag profile with a smoothly polished surface. The polished face gives residues little to cling to and makes the knife quick and easy to wipe down during shift changes, while the stainless composition resists attack from food acids, salt and cleaning agents. For manufacturers operating under strict food safety programs, using a corrosion-resistant blade on the cutting station reduces the risk of rust particles reaching the product and simplifies compliance with internal hygiene audits. The blade is supplied in matched pairs or single units exactly to your original dimensions and mounting pattern.

• Food Grade SUS420J2 Stainless Steel: The martensitic stainless composition resists rust, food acids and sanitizing chemicals on washdown lines.
• Hygienic Polished Surface: A smooth, polished face prevents residue build-up and makes the knife fast and easy to clean between production runs.
• Dependable HRC 50-55 Edge: Heat treatment balances corrosion resistance with a stable cutting edge for flexible packaging film.
• Uniform Zigzag Tooth Profile: Precision-ground teeth produce a clean, consistent tear-off serration on snack and biscuit wrapping film.
• Product Contact Safety: Corrosion-resistant construction reduces the risk of rust particles and metallic contamination on food contact surfaces.
• Made to Original Specification: Length, width, thickness, tooth pitch and mounting holes match your original knife for direct installation.

This food grade zigzag knife is intended for film cutting and bag cutting stations on biscuit and cracker wrapping machines, snack food packaging lines, bakery flow-pack equipment and confectionery wrapping machines, particularly in plants with frequent wet cleaning cycles or products with acidic or salty surfaces. It is also suitable for kitchens and food processing facilities where the same zigzag cutting principle is used on cling film and food wrap dispensers. Straight stainless film cutters, perforation blades and other hygienic cutting tools can be supplied from the same material to keep every cutting point on the line corrosion resistant. Share your machine model, film type and original knife drawing with our engineers, and we will produce a blade that matches your hygiene and performance requirements exactly.

Each stainless blade is cleaned, protected against surface marking with soft interleaving, and packed in carton boxes or plywood cases according to size and quantity, so polished surfaces and tooth tips arrive in perfect condition. ZHIJING is an ISO9001 certified manufacturer: incoming stainless steel is verified by spectrometer analysis, hardness is confirmed after heat treatment, and every blade passes final dimensional and surface inspection before dispatch. Material certificates, hardness reports and pre-production samples are available on request. OEM and ODM orders are accepted, and our engineers provide fast technical support for blade selection, installation and regrinding so your food packaging lines stay hygienic, efficient and profitable.