Overview
A flat circular part such as a pancake coil picks up dust and marks every time it is handled, and a loose hand-applied film slips once it moves. A side sealing and shrink wrapping machine covers a flat part in film, seals it and shrinks the film tight in one sequence: the part travels on the conveyor, film is laid over it, the side seal closes the film into a sleeve, and the shrinking station applies heat so the film draws down against the surface. This guide explains the sealing-and-shrink sequence, why it beats hand film work, what to specify, and what to verify before acceptance. It is written for plant engineers and production managers working with pancake coils and other flat circular products.
The side sealing and shrink wrapping machine is shown below:
Why Shrink Wrapping for Flat Circular Parts
| Problem | Manual film work | Sealed-shrink wrap |
|---|---|---|
| Dust and marks during handling | Film can sit loose, letting grit work in | Film is sealed and shrunk tight onto the part |
| Cover slipping in movement | Loose cover shifts | Shrunk film conforms to the surface, so it cannot slip |
| Shape for stacking | Soft cover offers little shape support | Tight film holds the part’s shape for stacking and transport |
Equipment with a shrink tunnel runs the parts through a heating section that tightens the film in a controlled pass. Part size and film type are confirmed per project.
How the Side Seal and Shrink Line Works
| Step | What happens |
|---|---|
| Part placement | A flat circular part is placed on the conveyor. |
| Film feed | Film is laid over the top of the part. |
| Side sealing | The side seal unit closes the film into a sleeve around the part. |
| Shrink | The sealed part runs through the heating section and the film shrinks tight. |
| Outfeed | The wrapped part exits; the operator removes it at the outfeed. |
The sequence covers and seals complete parts at one station, and higher volumes can be arranged with automatic part feeding. Cycle timing and the conveyor pacing are confirmed per project.
Sealed-Shrink vs Hand Film
| Characteristic | Hand film work | Side seal and shrink |
|---|---|---|
| Cover fit | Depends on the operator | Shrinks to the part, repeatable |
| Time per part | Tedious cut-and-wrap | One pass per part |
| Sealing | Film often left open | Sealed film locks the cover |
| Consistency | Drifts across shifts | Held per cycle |
| Labour | One operator continuously | Operator loads and unloads |
What to Specify and Verify
| Input | Why it matters |
|---|---|
| Part outside diameter, thickness and weight | Sets conveyor width, sealing and tunnel size |
| Film type, width and shrink ratio | Sets the film feed and heat settings |
| Cycle and pacing | Sets conveyor speed and throughput |
| Machine layout | Vertical or horizontal layout for your part route |
| Control panel and guarding | Sets operator layout and safety perimeter |
| Electrical supply | Voltage, phase and frequency on site |
All values are confirmed per project before build. Keep hands clear of the sealer and the heating section while the machine is running, and confirm the part is centred before each cycle. Routine checks cover the film feed, the conveyor and the heat section, per the machine manual. The machine is designed with EN 415-10 as the packaging-machinery safety reference and an ISO 12100 risk assessment for the sealing and heat areas. As part of acceptance, the vendor’s stated practice on this machine family includes near-continuous pre-delivery testing (up to about 24 hours where stated).
FAQ
Q: What does this machine do?
A: It covers a flat circular part in film, seals it and shrinks the film tight, so the part is protected and stable for stacking and transport.
Q: How does the film shrink?
A: After the film is sealed over the part, the heating section applies heat and the film draws down against the surface.
Q: Can it handle pancake coils?
A: Yes. A flat circular coil shrinks the same way as any flat part; the outside diameter and film are confirmed per project for your exact part.
Q: Do we load parts by hand?
A: The demonstration shows parts placed on the conveyor by hand, which suits moderate volumes; automatic feeding is arranged when the run size requires it.
Q: What does it suit?
A: Flat circular and ring-shaped parts that need a tight, dust-proof film cover before storage or delivery.
Next Step
Send your part outside diameter, thickness and weight, film preference and throughput target so the machine layout and electrical supply are confirmed on the proposal drawing.
Related Resources
- Coil Packaging: Operation and Applications – Automatic coil packing for circular and coil products.
- Coil De-strapping Machine – Coil-line handling around packing.
- FHOPE Packing Machinery Product Lines – The full range of FHOPE packing equipment.
