Executive summary Our aluminum profile bundle tying machine ties sub-bundles with film bands at 3–4 stations. Each station’s ring holds a film roll on a clutch mandrel that keeps tension constant until the roll is finished. We set the stations to your profile lengths and pass the tied bundles on to wrapping.
Table of Contents
- How bundle tying works
- Where the ties go
- Film tension and roll-out
- Cycle settings
- What happens after tying
- Utilities and safety
- Selection checklist for bundle tying
- Engineering FAQ
- Next step
- Related reading
- Sources
How bundle tying works
Workers load the profile bundle onto the platform, and the machine positions it automatically before tying. At each station, a ring rotates around the bundle and lays a band of film. A blade cuts the film at the end of each cycle, because the stations run in start-and-stop mode.
After tying, a lifter takes the bundles off one by one. The profiles stop at a row of tying stations, each with its own film roll, before moving on to the transfer conveyor.
Where the ties go
The machine has 3–4 tying stations. Depending on the layout, the stations either tie several points on one bundle or work side by side on separate bundles. Illustrative tie spacing for a 6 m bundle, with ties a short way in from each end:
| Ties per bundle | Positions | Spacing |
|---|---|---|
| 3 | ends and middle | just under 3 m |
| 4 | ends and two inner points | just under 2 m |
Longer or more flexible profiles usually need the fourth tie. For mixed lengths, we set the positions on your length list.
Film tension and roll-out
Each ring holds the film roll on a mandrel with a special clutch. The clutch keeps the tension constant until the roll is finished, so the last bands are as tight as the first.
| Item | Detail |
|---|---|
| Ring speed | regulated by an electronic inverter |
| Film tension | constant, by clutch on the mandrel |
| Roll run-out or film tear | automatic stop and operator warning |
| Film cut | blade at the end of each cycle |
| Cycle times | set to your needs |
Cycle settings
The stations run in start-and-stop mode, and the times can be set to your needs. Illustrative example: if one tying cycle takes 20 s and loading takes 20 s, a station finishes a bundle every 40 s, or 90 bundles per hour. When stations work side by side on separate bundles, output scales with the number of stations.
We confirm the real tying time on your bundle in the proposal.
What happens after tying
After the tying cycle secures the sub-bundle geometry, the load is transferred automatically downstream to secondary protection modules.
| Step | Equipment | Process details |
|---|---|---|
| Lift off | Lifter mechanism | Unloads the sub-bundles one by one from the tying cradle |
| Transfer | Reinforced transfer belts | Transports sub-bundles toward the wrapper infeed roller conveyor |
| Centering | Centering rollers | Guides and maintains profile alignment before ring infeed |
| Surface protection (optional) | Automatic paper/plastic packing machine | Feeding table → automated paper/PE sheet roll clamp feed → cut-to-length → bundle covering + taping [manufacturer rating] |
| Wrapping | Sub-bundle spiral wrapper | Orbital ring applies protective paper or stretch film |
| End taping | Synchronised taping head | Applies adhesive tape banding over wrapping tail |
As part of a continuous extruded aluminum profiles packaging line, tying stations integrate seamlessly with automatic paper sheet applicators, profile stacking machines, and sub-bundle wrapping equipment [manufacturer rating].
Utilities and safety
We design each line to the plant’s real situation, so power and air are listed in the proposal. The automatic stop on film tear or roll run-out protects the bundle and warns the operator. The standards that apply depend on the destination market. For CE markets, ISO 12100 sets the risk-assessment method and EN 415-10 sets general requirements for packaging machines.
Selection checklist for bundle tying
- Profile lengths and bundle cross-section dimensions.
- Required ties per bundle and target output (bundles per hour).
- Manual loading or automated upstream transfer integration.
- Downstream surface protection: paper sheet covering, stretch wrapping, and end taping.
- Plant layout drawing with available floor space and clearance.
Engineering FAQ
Q: How many tying stations do we need? A: The machine is configured with 3–4 stations. We determine the exact station count and layout based on your maximum profile lengths and output targets.
Q: Does tension drop as the film roll runs down? A: No. A mechanical clutch on the mandrel maintains constant braking tension from full roll diameter down to the core.
Q: What happens if the film tears? A: The system detects the loss of tension, immediately halts the cycle, and triggers an operator alarm beacon.
Q: Can we adjust the tying cycle time? A: Yes. Stations operate in programmable start-and-stop cycles, allowing inverter frequencies and dwell times to be tailored to your target line speed.
Q: Where do the tied bundles go next? A: An automated lifter transfers them one by one to reinforced transfer belts, feeding either an automated paper-sheeting unit or a sub-bundle spiral wrapper.
Next step
We plan your bundle tying stations in three steps:
- Submit your layout drawing with profile lengths and bundle sizes to info@fhopepack.com.
- Receive a proposal within 48 hours, with the station count, positions and layout.
- Book a site survey to fit the stations to your line.
Related reading
- Automatic aluminum wrapping and taping machine
- Automatic aluminum profile packing line
- Aluminum profile sub-bundle wrapping machine
- Automatic aluminum profile paper packing machine
- Aluminum profile packing line systems
Sources
- Tying stations, tension control, and transfer: Automatic aluminum wrapping and taping machine
- Line sequence and modular integration: Automatic aluminum profile packing line
- Sheet covering and taping integration: Automatic aluminum profile paper packing machine
- Safety standards: ISO 12100:2010, EN 415-10:2014
Last reviewed: 2026-10-29





