Multi-Function Conversion Lines

Multi-Function conversion lines feature automatic cutting and sewing with optional functions such as liner insertion, top hemming, bottom edge sealing, printing, perforation, handle punching, top folding (for valve woven bags), and more.

These lines effectively reduce labor intensity, lower production costs, improve product quality, and enhance production efficiency, providing greater economic benefits for your business.

70+
Export Countries
40+
High-end Patents
10000+
Global Installations
Woven Bag Automatic Bottom Sealing, Cutting and Sewing Machine
Fully automated cutting, bottom sewing and sealing - processes laminated or non-laminated PP woven bags with 70-80% labor reduction versus manual operations.

Max. Cutting Width (mm)800

Cutting Length (mm)600-1300

Important electrical brands:
Woven Bag Automatic Cutting Sewing and Printing Machine
Fully automated cutting, bottom sewing and printing - processes both laminated and non-laminated bags with 70% labor reduction versus manual operations.

Fabric Width (mm):350-750

Cutting Length (mm):450-1300

Important electrical brands:
Valve Woven Bag Automatic Top Folding, Cutting and Sewing Machine
Fully automated machine for producing valve woven bags from PP woven fabric rolls, with or without a gusset - featuring "L" type cutting, bottom sewing, top folding, top sewing, and bag collection, with optional edge banding for both bag top and bottom.

Width of Fabric Roll (mm):400-520

Cutting Length (mm):500-900

Important electrical brands:
Woven Bag Quality

Ultrasonic heat sealing ensures neat bag opening and no displacement of inner film bag

Edge wrapping increases sealing

Automatic switching between hot cutting and cold cutting, very short downtime

Woven bags produced by Qianfeng machines
Woven bags produced by other peer machines
Advantages of Multi-Function Conversion Lines
High-Quality Gearbox
Our machines use precision planetary gearboxes (for select models) that ensure precise control, smooth operation, and stability under heavy loads.
Automatic Tension Control
Automatically adjust the tension to avoid defor-mation of the woven bag or sewing deviation
Dual-blade Automatic Switching System
Supports automatic switching between hot and cold cutting for different material needs.
AI Visual Waste Bag Inspection System

Catch every defect. Classify with precision.

One-click intelligent operation, no training required.

Independent configuration of defect types.

Adjustable detection sensitivity, no missed defects, no over-screening.

Check The Details
Customers' Questions and Answers about Multi-Function Conversion Lines
Can your machines handle customized bag sizes/designs?
Yes! Our machines can be tailored for: Bag dimensions (width/length adjustments) Printing colors (1-6 colors, flexographic)
What types of woven bags can your machines produce?
Our machines can produce a variety of woven bags, including non-laminated woven sacks, laminated woven sacks, BOPP laminated bags, paper-plastic composite bags, valve cement bags, ton bags, and more. They are suitable for different materials (HDPE and PP) and size requirements
Is the maintenance cost of your machines high?
No, our machines are built with high-quality components, ensuring long maintenance cycles and low maintenance costs. Unlike competitors, we offer fair-priced spare parts - keeping your operations efficient and affordable.
Is the operation of the machine complex?
No, our machines are designed with user-friendliness in mind, featuring an advanced touchscreen interface and an easy-to-use control system. They are simple to operate, with minimal training required.
Is the machine quality stable?
Yes, our machines are ISO certified and undergo full-process quality control. We conduct 100% testing before shipment to ensure smooth operation upon arrival at the customer's facility.
What is the lifespan of the machine?
Our machines are built to last, with knife holders and main frames undergoing high-temperature heat treatment, and key contact surfaces precision-ground using CNC machines. As a result, the average lifespan of our equipment is over 10 years, significantly higher than the industry average of 5-6 years.
What is the space requirement of the machine?
Our machines feature an integrated design that combines the functions of 4-6 traditional machines into one, reducing the space requirement and saving over 30% of factory space. The exact footprint depends on the specific model - we'd be happy to provide details based on your needs.
What after-sales support and service do you provide?
Installation Support: Free remote guidance (onsite engineer available upon request) Warranty: 1-year warranty (non-consumable parts) + lifelong technical support Spare Parts: Lifelong supply with competitive pricing & fast global delivery
After-sales Service
We provide remote technical support and on-site installation guidance to ensure the smooth operation of customers' equipment.

Fast delivery of required spare parts

Replacement solutions for old equipment parts

Reasonable prices for original spare parts

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