High-Precision VFFS Bag Formers for Any Packaging Machines
High-Performance VFFS Bag Former | Engineered for Machine Manufacturers & Wholesalers
Product Overview: The Core of Perfect Bagging
The VFFS Bag Former and Forming Shoulder assembly is the heart of any Vertical Form Fill Seal (VFFS) machine. It is the critical component responsible for precisely and efficiently shaping flat packaging film into a continuous tube, which is then sealed to create individual bags.
Our assemblies are constructed from high-strength stainless steel and food-grade materials, making them ideal for the automated packaging of granules, powders, liquids, and more.
We don’t just manufacture parts; we deliver a strategic advantage that enhances your brand value and earns the trust of your end-users.
As a packaging machinery manufacturer or parts wholesaler, your primary concern isn’t just the bag former itself. It’s about ensuring your equipment delivers consistent performance, flawless package quality, and lower maintenance costs. Our high-performance forming collars and forming tubes are engineered to meet these exact demands.
Are Your Customers Complaining About These Common Issues?
End-User Pain Point | Root Cause | Our Solution: The Superior Bag Former Design |
Frequent wrinkles and film distortion | Poorly designed forming shoulder curve, excessive film tension. | Optimized Curve Geometry: We use computer simulations and extensive testing to create the ideal forming shoulder contour, ensuring smooth film travel and minimal friction. |
Inconsistent bag sizes, misaligned seals | Low-precision forming collars, deformation over time. | High-Precision Manufacturing & Premium Materials: Crafted from SUS304 stainless steel with high-precision laser cutting and expert hand-polishing, our bag formers guarantee dimensional accuracy and resist deformation. |
Lengthy debugging after film changeovers | Poor compatibility of the bag former for packing machine. | Universal Compatibility: Our forming tubes and collars are rigorously tested to be compatible with leading domestic and international VFFS machine brands. Custom designs are also available. |
Inability to increase packaging speed | Film fluttering or drifting during the forming process. | Seamless Forming Technology: We utilize advanced seamless shaping and argon arc welding techniques to create an ultra-smooth interior, ensuring stable film tracking even at high speeds. |
Performance Specifications & Dimensions
Key Performance Features
- High-Precision Forming: Accommodates a wide range of film thicknesses (0.02mm – 0.12mm), ensuring consistent and aesthetically pleasing bags.
- Low-Friction Surface: A mirror-polished finish on the forming shoulder minimizes drag, protecting printed films from scratches and damage.
- Modular Design: The bag former assembly is designed for easy installation and maintenance, significantly reducing machine downtime.
- Robust & Durable: Made from premium SUS304 stainless steel, our forming tubes are corrosion-resistant, wear-resistant, and built to last.
Standard Size Specifications (Examples)
Model | Applicable Film Width (mm) | Forming Tube Diameter (mm) | Total Height (mm) |
LF-80 | 80-200 | 50-100 | 200-350 |
LF-150 | 150-300 | 80-150 | 300-500 |
Custom Orders | As required | As required | As required |
Anatomy of a Bag Former: The Science of Flawless Bagging
Inspired by industry-leading designs, we have perfected every detail of our bag former components to ensure superior performance and durability.
Key Component | Design Highlight & Customer Value |
The Forming Shoulder (Collar) | A perfectly contoured forming collar combined with meticulous hand-polishing allows any type of film to glide smoothly, resulting in a perfect bag shape every time. |
The Forming Tube | Specifically designed for your product, this component maximizes product flow and includes high-speed options for seamless integration with weighing systems. |
The Mounting Plate | Engineered to the exact specifications of the machine manufacturer for a perfect fit. Available in aluminum or stainless steel, with options for weight reduction. |
Bag Former Replacement Tutorial
Tools Required
•Allen Wrench (Hex Key) Set
•Rubber Mallet
•Cleaning Cloth & Isopropyl Alcohol
Step-by-Step Replacement Process
Step | Action | Key Considerations |
1. Stop & Power Off | Ensure the machine is completely stopped and the main power is disconnected. | Safety first! |
2. Remove Old Assembly | Use an Allen wrench to loosen the mounting bolts. Gently tap the forming shoulder with a rubber mallet to dislodge it from the support frame. | Avoid using excessive force to prevent damage to the mounting frame. |
3. Clean Mounting Surface | Use a cloth and alcohol to thoroughly clean any film debris, grease, or residue from the mounting surface. | A clean surface is essential for precision alignment. |
**4. Install New Bag Former | Align the new bag former with the positioning holes, slide it smoothly into place, and then evenly hand-tighten all mounting bolts. | Ensure the assembly is seated correctly and not tilted. |
5. Align & Test | Manually pull a section of film through the forming tube and over the forming shoulder. Finely adjust the assembly’s position until the film path is centered, smooth, and free of wrinkles. | This is the most critical step for ensuring quality bag formation. |
Expert Tip: We highly recommend recording a video of the replacement process. This can serve as an invaluable internal training resource or be provided to your end-customers to significantly boost their satisfaction.
Purchasing & Partnership Guide
We offer a streamlined process for our B2B clients:
- Provide Your Specs: Simply give us your VFFS machine model, desired bag style, and film width.
- Technical Confirmation: Our experts will provide free drawing confirmation and model selection advice.
- Fast Production: Standard models are in stock. We promise rapid delivery for custom orders.
- After-Sales Support: We provide comprehensive technical support and a robust warranty.
Compatibility Information
Our bag formers and forming collars have been extensively validated on equipment from the following brands:
- Leading Chinese Brands: Dasong, Coretamp, Baopack, Zhongke, etc.
- International Brands: Bosch, Ishida, Matrix, Rovema, tna, Hayssen, and more.
We guarantee 100% installation compatibility.
What We Make: Bag Former Types & Customization Range
As a specialized bag former manufacturer, we produce the full spectrum of forming shoulder styles used in modern VFFS packaging lines:
By Bag Style:
- Back-seal (Pillow) bag formers — the most common VFFS format
- 3-side seal (Three-edge seal) forming sets
- 4-side seal forming collars
- Forming collars for triangle/pyramid-shaped pouches
- Forming tubes for stick-pack & sachet packaging machines
All forming shoulders can be customized to your machine brand, film width, and bag geometry. OEM/ODM welcome.
Customization Range:
- Film width: 35mm (min) to 800mm (max)
- Material: food-grade stainless steel, with optional Teflon or sand-blasted coating for sticky or thin films
- Bag shapes: round, square, oval, gusseted, quad-seal, and more
What Products Can Be Packaged?
Our bag formers and forming collars are engineered for high compatibility across all major product categories:
| Product Type | Examples | Recommended Forming Feature |
|---|---|---|
| Granules | Nuts, coffee beans, seeds, sugar, rice | Standard stainless steel collar |
| Powders | Flour, spices, protein powder, milk powder | Dust-tight seal, optional suction port |
| Liquids | Sauces, oils, beverages, vinegar | Trunk-style tube for bottom-up fill |
| Pastes & Gels | Ketchup, jams, adhesives, lotions | Smooth bore tube, anti-drip geometry |
| Solid pieces | Candies, frozen vegetables, hardware parts | Wide-bore collar with gentle shoulder angle |
Not sure which former suits your product? Send us your film width and product type — our engineers will recommend the right forming collar within 24 hours.
Compatible Packaging Films
Our VFFS bag formers are compatible with all mainstream packaging film types used in vertical form fill seal machines:
- Transparent PE/CPP/OPP film — standard pillow bags for snacks and fresh produce
- Laminated composite film — for moisture and oxygen barrier (coffee, pet food)
- Kraft paper / paper-composite film — eco-friendly packaging trend; our formers handle paper’s higher friction with optimized shoulder angles
- Aluminum foil / metalized film — for light-barrier requirements; special coating available to reduce scratching
- Bubble/foam film — for fragile or e-commerce packaging
- Non-woven fabric film — for industrial or agricultural applications
Note on film friction: Different films have different friction coefficients. Our forming shoulders can be specified with Teflon coating (low friction) or sand-blasted finish (moderate friction grip) to match your specific film. Mention your film type when you inquire.
Related Product
What is the difference between your bag formers and OEM parts?
We provide high-quality replacement parts that use materials and manufacturing processes that are equivalent or superior to OEM standards. Our advantages lie in faster delivery, more flexible customization, competitive pricing, and equally reliable performance.
What if I'm unsure about the exact bag former dimensions?
No problem at all. Just provide your packaging machine brand/model and target bag width. Our technical experts will handle the rest, including design drawings for your final confirmation.
Do you support OEM/ODM manufacturing?
Yes, we welcome OEM/ODM partnerships. We can manufacture forming tubes and shoulders according to your brand requirements, including custom logos and packaging.
Are there discounts for bulk purchases?
Absolutely! We offer highly attractive volume discounts for machinery manufacturers and wholesalers. Please contact our sales manager for a detailed quotation.
Send Your Inquiry Today