How Should You Adjust The Inverter Rollers On A Side Sealer?
Adjusting the inverter rollers on an automatic side sealer is a critical step for achieving seamless, high-speed packaging. For manufacturers and contract packagers in industries like food, bakery, cosmetics, pharmaceuticals, and printing, getting this adjustment right ensures your products are perfectly wrapped, reduces film waste, and keeps your line running at peak efficiency.
Why Is Inverter Roller Adjustment Important?
The inverter rollers guide the shrink film around your product, setting up the film for precise side sealing. If the rollers are misaligned, you risk wrinkles, uneven seals, or jams. Proper adjustment is essential for the fully automatic side sealing machine to deliver consistent, professional results—especially when running at high speeds or with products of varying sizes.
What Steps Should You Follow to Adjust the Inverter Rollers?
To get the best performance from your automatic side seal wrapper, follow these steps:
- Position the Film Roll: Place the film roll so the folded edge is slightly more than half the height of your product past the film inverter. This ensures enough film coverage for a tight seal.
- Thread the Film Properly: Guide the film through the rollers and inverter, making sure it pulls smoothly. Any resistance can cause poor side seals and film tracking issues.
- Align the Rollers: Adjust the roller before the inverter so its top sits centered between the upper and lower inverters. This alignment helps the film track evenly and prevents bunching or slippage.
- Set Conveyor Width: Adjust the in-feed conveyor so the product rides close to the film unwind side. The edge closest to the side seal should be about half the product’s height away from the seal for optimal film tension.
- Fine-Tune the Inverter Height: Set the inverter height at half the product’s height. This ensures the film wraps snugly and consistently, no matter the product’s dimensions.
How Do You Ensure Smooth Film Flow and Consistent Seals?
Smooth film flow is vital for uninterrupted operation on a fully automatic side sealing machine. Here’s how to maintain it:
- Keep the inverter and rollers clean—remove any buildup with rubbing alcohol.
- Use film separator rods if available to prevent static or moisture from causing the film to stick.
- Check for equal tension on both the top and bottom layers of film. Uneven tension can cause the film to slip out of the side sealer, requiring rethreading and causing downtime.
Also Read –
How Do Kallfass Side Sealers Handle High-Speed Packaging Without Sacrificing Quality?
Why Are Gluten-Free and Allergen-Free Bakeries Choosing Side-Seal Shrink Wrapping?
Why Side Seal Shrink Wrapping is Ideal for Bakery Products
What Are the Benefits of Proper Roller Adjustment?
When the inverter rollers are correctly set, your automatic side sealer delivers:
- Consistent, high-quality seals that look professional and protect your products.
- Reduced film waste, thanks to precise film tracking and tension.
- Maximum throughput, as jams and misfeeds are minimized—even with random product spacing or mixed sizes.
- Lower maintenance needs, since smooth film flow reduces wear on machine components.
Ready to Optimize Your Packaging?
For manufacturers who demand performance and reliability, the right adjustment of inverter rollers is just one part of a complete solution. Trust Complete Packaging Solutions & Systems Inc. / Kallfass USA for automatic side sealer systems that set the standard for speed, uptime, and precision.
Contact us today for a custom demo or to discuss your packaging automation needs.
