VFFS Sealing Blade

VFFS Sealing & Cutting Blade | Replacement Packing Blade

Are you tired of poor cuts and frequent downtime from your vertical form fill seal machine? A worn-out packing machine cutting blade not only creates unattractive packaging but also signals major production inefficiency. This high-performance packing blade is a crucial component of the sealing and cutting assembly, working in tandem with the sealing blade jaws to produce a perfect bag every time.
As a leading supplier of Packaging Machine Knives, we craft our form-fill-seal blades from superior high-carbon steel. This vertical packing machine knife features an optimized wave tooth design, ensuring an exceptionally smooth cutting process. It’s the perfect replacement vertical bagger knife to prevent stringing and deliver a flawless finish.

Sealing Blade Key Features

  • Optimized Wave Teeth: Delivers a smooth, clean cut, a key function of a quality sealing blade assembly.
  • Premium High-Carbon Steel: This packing blade is specially heat-treated for high hardness and superior wear resistance, lasting much longer than standard knives.
  • High-Precision Grinding: The cutting edge is extremely sharp, reducing resistance for higher efficiency.
  • T-Slot Rail Design: Allows for quick and easy installation, making it the ideal replacement knife for your VFFS machine.
  • Anti-Rust Surface Treatment: Effectively extends the storage and operational life of the cutter blade.
Packing blade
Packing machine cutting blade supplier

Packing blade Size & Technical Specifications

Parameter
Specification
Product Type
T-Slot Rail Wave Serrated Packing Blade / Sealing Blade (Cutter)
Core Material
Premium High-Carbon Steel (with special heat treatment)
Process
High-precision grinding, anti-rust surface treatment
Common Sizes
150mm (for 320 models & common bags)
180mm (for 420 models & wide bags)
220 mm(for 620models & wide bags )
Customized Size
Customization
Custom lengths for all types of Packaging Machine Knives are available. Contact us!

Compatibility

This form-fill-seal blade is a direct replacement for knives on various mainstream Vertical Form Fill Seal (VFFS) machines. Please choose the appropriate size for your equipment:
•150mm Model: A suitable packing machine cutting blade for 320-type machines and the vast majority of common vertical packing machines
•180mm Model: Perfect replacement vertical bagger knife for 420-type machines and other equipment requiring a wider cutting width.
•220mm Model: Perfect replacement vertical bagger knife for 620-type machines and other equipment requiring a wider cutting width.
Not sure which model to choose? It’s simple! Measure your current cutoff knife blade or provide us with your machine’s brand and model. Our customer service team will provide a precise recommendation!
Packaging Machine Knives
Packaging Machine Knives

Lifespan & Quality Warranty

Lifespan
•Extra-Long Durability: Under normal conditions, the average service life of this packing blade is 6-12 months.
•Replacement Signal: When you notice failure to cut, stringing, or uneven cuts, it’s time to order a replacement knife. Regular inspection is key.
           A Final Tip: Keeping a spare cutter blade on hand is the best strategy to avoid unexpected production line shutdowns!
Quality Warranty
We are confident in the quality of our VFFS machine parts and provide a solid guarantee:
⏳ 6-Months Quality Warranty
During the warranty period, for any quality issues not caused by human factors, we promise a free replacement for your packing machine cutting blade.

Packing machine cutting blade Installation Guide

Replacing your VFFS cutting blade is simple. Follow these 5 steps:

1.Loosen: Power off the machine and use a wrench to loosen the two screws securing the blade.
2.Remove: Carefully slide the old cutoff knife out from the T-slot rail.
3.Confirm Direction: Note the front and back of the new blade. The sharp-edged side is the front and must be installed facing up.
4.Insert & Adjust: Slide the new packing blade into the rail, hand-tighten the screws, then adjust its position to ensure it is centered.
5.Tighten: Firmly tighten the screws on both sides to complete the installation.
Want to see a video tutorial? We have a detailed video on how to change the cutoff knife blade
Packing machine cutting blade
  • A Rigorous Manufacturing Process Forged for Quality

Ever wonder how a simple piece of steel is transformed into the precise, durable cutting tool on your production line? We believe that exceptional quality comes from an unwavering commitment to every detail. We are proud to show you our manufacturing process, so you can see our dedication to quality firsthand.

Packing machine cutting blade

Step 1: Material Selection & Forging

  • Blanking & Forging: We start by selecting only the highest-grade high-carbon steel. Through the forging process, we reshape the steel’s internal crystal structure, making it denser and tougher. This lays a solid foundation for the blade’s durability right from the source.

Step 2: Advanced Heat Treatment

  • Quenching, Tempering & Hardening: This is the “soul” of the blade. We employ a complex, multi-stage heat treatment process with precise control over temperature and time. Quenching gives the blade its extreme hardness, while Tempering provides the perfect amount of toughness to prevent it from chipping or breaking during use. This critical step ensures our blades are both wear-resistant and resilient.

Step 3: High-Precision Grinding

  • Rough & Fine Grinding: After heat treatment, the blade blank moves to the high-precision grinding stage. Our skilled technicians use a multi-step grinding process to gradually sharpen the edge to perfection while ensuring the blade body has a smooth finish and exact dimensions. The sharpness of every single blade is born here.

Step 4: Dual Quality Control & Packaging

  • In-Process & Final Inspection: We have two critical quality control gates. Before grinding, we inspect the semi-finished product for hardness and performance. After fine grinding, we conduct a final inspection for dimensions, sharpness, and appearance. Only products that are 100% qualified proceed to packaging.
  • Packaging & Warehousing: Every qualified blade is carefully treated with anti-rust protection and individually packaged to ensure it arrives in your hands in perfect condition.

Related Product

How do I know if this cutting blade will fit my packaging machine?

The easiest way is to measure the length of your current blade. Our 180mm model is perfect for 420-type machines, and the 150mm model fits 320-type machines. If you are unsure, simply send us your machine’s brand, model, and a photo of the old blade. Our technical team will provide a precise compatibility check for free.

 

What is the difference between your "premium high-carbon steel" and standard steel?

Our high-carbon steel undergoes a special heat treatment process, giving it a much higher hardness (HRC 62-64) and wear resistance than standard steel. This means our packing blade has a longer service life and stays sharper for longer, reducing your downtime for replacements.

What if I need a size other than 180mm or 150mm? Do you offer customization?

Absolutely! We fully support custom orders. Whether you need a special length, tooth pattern, or mounting hole configuration for your packaging machine knives, just provide a drawing or a sample, and we can tailor-make a blade to your exact specifications.

How long does one blade typically last?

For cutting standard composite films (like CPP/PE), the average lifespan of one sealing blade cutter is between 6 and 12 months. However, please note that the lifespan may be shorter if you are cutting very thick materials, films with aluminum foil, or running at extremely high speeds.

Is it complicated to replace this blade? Do I need a professional technician?

Not at all! The replacement process is very straightforward. Our T-slot rail design is made for quick and easy changes. All you need is a wrench and our 5-step installation guide. We also provide a detailed video tutorial to ensure you can do it yourself in minutes.

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