The Science of Bag Formers: Achieving Wrinkle-Free Packaging Excellence

1.The “Heart” of Your VFFS Machine

In Vertical Form Fill Seal (VFFS) packaging, the Formadora de bolsas (also known as the “Trunk” or “Collar”) is responsible for turning a flat roll of film into a perfect tube. If the geometry is off by even a millimeter, you face constant downtime due to film breakage, wrinkles, or misaligned back-seals.

Precision VFFS Bag Formers and Trunk-style Collars for Packaging Machines - Custom Stainless Steel Design

2. Why “Off-the-Shelf” Formers Often Fail

Many manufacturers try to use generic formers. However, different films (PE, Laminates, Paper) have different friction coefficients.

  • Nuestra solución: We offer specialized Trunk-style Formers with optimized shoulder angles to ensure smooth film flow without excessive tension.

  • Surface Coating: For sticky or thin films, our formers feature premium coatings (like Teflon or sand-blasted finishes) to reduce drag and prevent “static” build-up.

 

 

3. Customization: The Key to Flexibility

When you launch a new product size, you don’t need a new machine—you need a precision-engineered bag former.

  • Square Bottom vs. Pillow Bag: We design formers specifically for your bag style to ensure the “ears” are tucked perfectly.

  • Gas Flushing & Dust Suction: Our formers can be integrated with gas nitrogen injection tubes for freshness or dust extraction ports for powdery products.

 

4. Maintenance Tip: Protecting Your Former

A small scratch on the shoulder of the former can ruin thousands of bags.

  • Daily Check: Always clean the collar with a non-abrasive cloth to remove adhesive residue or dust.

  • Storage: When switching sizes, store your formers on a dedicated rack to avoid denting the precision edges.

“Not sure which former size you need? Send us your film specs and bag dimensions for a custom blueprint.”

 

 

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