Vertical Sealing Jaw For Multi-Lane Strip Sachet VFFS Machine

Product Overview

The vertical sealing jaw is the core heating component that forms vertical back seals on multi-lane vertical form-fill-seal packaging machines. With stable heating temperature and balanced pressing force, it tightly fuses composite film to form neat, airtight vertical seams for strip sachets.

Poor vertical sealing quality will directly lead to powder or liquid leakage, product deterioration, and customer complaints. Our CNC-machined vertical heat bars are designed to solve common sealing defects, deliver stable performance during mass production, and reduce your daily material waste.

We supply replacement sealing jaws as well as long-term, reliable sealing solutions for food, herbal medicine, and liquid sachet manufacturers, packaging machinery OEMs, and spare parts distributors worldwide.

 

Common Vertical Sealing Troubles & Targeted Solutions

• Leakage caused by a weak vertical seal

Reason: Uneven serration wear, unstable heating, and unbalanced pressing force
Solution: Precision CNC full-circle serrations ensure even pressure across the whole sealing width, matched with a balanced thermal conduction design.

 

• Burnt marks and melted film on the sachet surface

Reason: Local overheating and residual plastic stuck on the bare metal jaw
Solution: Optional food-grade PTFE anti-stick coating prevents melted film adhesion; uniform heat distribution avoids local overheating.

 

• Wrinkled and offset vertical sealing seams

Reason: Low machining precision and base deformation after long-time high-frequency operation
Solution: High-rigidity SUS304 or copper blank, precision reamed mounting holes keep perfect alignment with multi-lane film traction structure, anti-deformation integrated design.

 

• Hard-to-clean burnt residue leads to frequent production stops

Reason: Smooth, uncoated metal surface traps molten film residue
Solution: Dense PTFE coating repels plastic residue; polished base surface allows quick wiping during daily maintenance.

 

 

Material Comparison: SUS304 Stainless Steel VS H62 Copper

1. SUS304 Food Grade Stainless Steel (Standard Version)

• Thermal performance: Stable medium heat transfer speed, consistent temperature output
• Hardness & service life: High surface hardness, wear-resistant, with a long service cycle
• Suitable scenes: General powder, liquid, and sauce multi-lane strip sachet lines with normal operating speed
• Cost advantage: High cost performance for daily mass production

2. H62 Copper (Custom Upgrade Version)

• Thermal performance: Excellent fast heat conduction, ultra-even temperature for thin heat-sensitive film
• Hardness & service life: Soft texture, great heat conductivity, but needs gentle daily maintenance.
• Suitable scenes: High-speed VFFS production lines, ultra-thin composite packaging film, strict temperature control requirements
• Cost advantage: Higher unit cost, designed for high-precision fast production

 

 

Food-Grade PTFE Anti-Stick Coating Introduction

We provide multi-layer cured PTFE coating for customers processing sticky packaging materials. The compact coating forms a non-adhesive protective layer to stop molten PE and CPP composite film from sticking to hot jaw surfaces.

This coating largely cuts down manual cleaning downtime, especially suitable for production lines packing high-sugar sauce, honey, and easily melted film. All coating materials meet international food contact hygiene standards and contain no harmful PFOA additives.

 

Replacement Steps & Daily Maintenance Guide

Required Tools
Hex Allen wrench, flat spanner, soft lint-free cleaning cloth

Safe Replacement Operation Steps

• Cut off all power supply and wait for the vertical sealing jaw to fully cool down to avoid scald accidents.
• Disconnect the wiring terminals of the heating cartridge and temperature sensor.
• Loosen all mounting bolts and take out the old, worn sealing jaw.
• Wipe the stainless steel heat seal base holder strip thoroughly to remove residual film debris.
• Align the new vertical jaw with the positioning holes and fasten the fixing bolts evenly.
• Reconnect the heating and sensor wires correctly.
• Switch on power, set standard sealing temperature and test sachet sealing quality, adjust temperature if necessary.

 

Daily Maintenance Rules

 

• Post-shift cleaning every day: Wipe residual film with a soft cloth when the jaw is slightly warm.
• Weekly routine inspection: Check serration wear and tightness of all mounting screws.
• For PTFE-coated jaws: Never use hard steel scrapers to scratch the coating surface; only a soft brush or cloth is allowed.

 

Core Technical Parameters & Custom Specifications

Main Technical Features

• Custom mounting hole center distance to match 2–12 lane multi-lane VFFS equipment
• Reserved M6 threaded port for temperature probe installation
• Integral CNC serration engraving, precision wire cutting, and blank forming
• Customizable options: Material switching between stainless steel and copper, PTFE coating, full custom length, and hole layout

 

Common Standard Length Options

 

1. 150mm: Small single-row strip sachet
2. 180mm: Small & medium multi-lane stick pack equipment
3. 200mm: Standard multi-column food strip bag machine
4. 220mm: Conventional powder sachet production line
5. 250mm: Medium and large capacity multi-lane packaging equipment
6. 280mm: High-speed continuous strip packing line
7. 320mm: Large-volume liquid strip pouch production
8. 350mm: Extra-wide multi-column VFFS packaging machine

Matching Multi-Lane Packaging Spare Parts

Our vertical sealing jaw works with stainless steel heat seal base holder strips and UPE anti-stick liner blocks to form a complete vertical sealing module for multi-lane stick pack production lines.

For edge trimming after vertical sealing, we also supply matched cutting spare parts:
Multi-Lane Packaging Round Corner Cutter

Frequently Asked Customer Questions

Q1: Is the copper vertical sealing jaw better than stainless steel?
A1: It depends on your production conditions. Copper heats faster and more evenly for high-speed thin film production. SUS304 stainless steel has higher hardness, better wear resistance, and cost performance for most ordinary packaging workshops. We will recommend suitable materials according to your film type and machine running speed.

Q2: Packaging film always sticks to the vertical jaw surface. How can this problem be solved?
A2: Choose our optional food-grade PTFE anti-stick coating vertical sealing jaw. The compact coating avoids molten film adhesion and greatly reduces cleaning downtime.

Q3: How about the performance of your vertical sealing jaw compared with the original OEM spare parts?
A3: Our vertical heat bars adopt the same CNC serration processing standard as OEM accessories. The sealing performance can reach or exceed that of original parts, with more flexible customized sizes and competitive factory direct prices.

Q4: Can this vertical sealing jaw fit my existing multi-lane VFFS stick pack machine?
A4: Standard hole spacing and serration size match most mainstream 2–12 column vertical packaging equipment. We fully customize length, hole layout, and thickness for non-standard machines; you only need to provide machine drawings or old jaw samples.

Inquiry Guidance

If you need bulk quotations, physical test samples, or fully customized vertical sealing jaw solutions for multi-lane strip sachet VFFS machines, send your required length, material selection, and machine lane quantity to us at any time.

As a full-set supplier of VFFS multi-column packaging spare parts, Big Brother Cutting Tool provides vertical sealing jaws, cross seal components, stainless steel heat seal base strips, UPE liners, and round corner cutters for global food and pharmaceutical strip sachet manufacturers. We reply to all customer inquiries within 12 working hours.

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