Shrink Wrap Machines for Flour Packaging: Total Closure Multipacks Made Easy

If you're packaging flour for wholesale, distribution, or club store shelves, a traditional shrink wrap machine won't cut it. Flour bags are heavy, soft-sided, and dust-prone, making it essential to use a system designed for precise handling, tight sealing, and full product protection.

That’s exactly what the Polypack FH shrink wrap machine is built to do.

We’ll walk you through how this high-performance machine wraps multipacks of flour using a side infeed, total closure shrink film, and a carefully engineered mechanical sequence designed for the food industry.

Built for Bulk Packaging in Food Plants

The Polypack FH is an advanced shrink bundler that automates the wrapping of 6, 12, or 24 multipacks of flour bags—sealing them in total closure shrink film to protect against moisture, dust, and handling damage. Here's how it works:

1. Infeed Conveyor + Diverter (Clamp & Gate)

Products arrive from upstream equipment and are organized into two lanes using a diverter clamp and gate system. This arranges the flour bags neatly into position for bundling.

2. Staging Clamp & Decompression Area

The staging clamp holds bundles until the exact number of bags is grouped. The product stop and decompression zone keep the bags stable before pushing.

3. Transfer Pusher & Main Pusher

Bundles are moved into position using a dual-pusher system, first side-shifted, then pushed forward into the forming head, which is already loaded with shrink film.

4. Film Feed & Micro Perforation

Shrink film is unwound and passed through a micro perforation unit, allowing air to escape during the shrink tunnel stage. This ensures a smooth, tight wrap without trapped air bubbles.

5. Forming Head + Seal Bar Assembly

The product enters the forming head, which wraps the film fully around the bundle. A thermostatically controlled seal bar then seals and cuts the film to complete the total enclosure.

6. Shrink Tunnel

The wrapped bundle travels on a tunnel conveyor through a precisely heated shrink tunnel. Adjustable baffles and directed airflow ensure consistent shrink without disturbing the product or damaging the film.

FH Series with Starwheel Reorientation

Designed for the Demands of Food Manufacturing

Whether you're packaging corn flour, wheat flour, rice, or similar dry goods, the FH-24-32CL offers:

✔️ Heavy-duty stainless steel construction✔️ Dust mitigation system minimizes flour dispersion for cleaner operation

Looking to upgrade your bulk flour packaging line?

Talk to a team member today to upgrade your packaging line!