Executive summary Large rolls are heavy and round, so lifting them onto a wrapper by hand or crane is slow and risky. This roll stretch wrapper lifts a roll up an inclined conveyor onto a rotating platform, wraps it in film while it turns, and discharges it on downstream rollers. Turns per roll follow from the roll width and the film overlap. We engineer both per project.
Table of Contents
- What the machine does
- How the roll wrapping cycle works
- Film overlap and turns per roll
- What to tell us about your rolls
- Controls and safety
- Selection checklist for a roll stretch wrapper
- Engineering FAQ
- Next step
- Related reading
- Sources
What the machine does
The roll stretch wrapper automates the horizontal handling and axial packaging of heavy cylindrical products, such as paper reels, fabric rolls, non-wovens, and carpets. The operation begins at an integrated, low-profile horizontal infeed station. A heavy-duty, powered roller conveyor section tilts upward to match the transfer gradient, allowing the roll to climb an inclined roller ramp under controlled drive torque. Operators can align the product against entry guides at the base loading datum before transfer begins.
Once the roll ascends the incline, it levels out onto a precision rotating turntable platform. A vertical stabilizing top arm descends to secure the core and prevent dynamic drift during wrapping. The platform turns the roll around its vertical axis as the film carriage applies high-tension stretch film across its circumference. After completing the full wrapping sequence and shoulder reinforcement, the stabilizing arm retracts vertically, and the fully wrapped package discharges automatically onto a downstream horizontal roller conveyor.
How the roll wrapping cycle works
The entire operating sequence proceeds through five synchronized steps:
| Step | What happens |
|---|---|
| Infeed | The roll arrives on the flat conveyor |
| Lift | The conveyor tilts and the roll climbs the inclined rollers |
| Position | The roll settles on the rotating platform and the arm comes down |
| Wrap | The platform turns the roll while film goes on |
| Outfeed | The arm lifts and the roll leaves on rollers |
Because the roll moves continuously on driven rollers from initial infeed to final outfeed, overhead cranes, hoists, and forklift trucks are completely eliminated from the active wrapping cell. This drastically reduces transfer idle time, mitigates mechanical shock on the product outer layers, and removes crane-related pinch hazard zones.
Film overlap and turns per roll
Film usage and packaging integrity depend on roll dimensions, film web width, and target overlap percentages. Below is an illustrative engineering calculation showing how turn counts are determined across a standard cylindrical face:
| Item | Value |
|---|---|
| Roll width (illustrative) | 1,600 mm |
| Film width (illustrative) | 500 mm |
| Film advance per turn at 50% overlap | 250 mm |
| Turns across the width, 1,600 ÷ 250 | about 7 |
| End turns (illustrative) | 2 + 2 |
| Total turns | about 11 |
Extra turns applied at both roll ends serve a critical containment function: they anchor the film tail securely, reinforce structural clamping on roll shoulders, and prevent environmental moisture or debris ingress during warehouse stacking and horizontal freight transit.
What to tell us about your rolls
Accurate application data ensures the structural sizing of the infeed mechanism and turntable drive matches your operational envelope:
| Item | Why it matters |
|---|---|
| Diameter and width range | Sets the platform size and arm stroke |
| Roll weight | Sets the conveyor and lift |
| Rolls per hour | Sets the wrap speed |
| Core or no core | Sets the roll support on the platform |
Our mechanical design team sizes the inclined infeed incline angle, roller pitch, and lifting actuator capacity based on your heaviest specified roll weight, and cross-checks the total mechanical cycle time against your required hourly throughput.
Controls and safety
During the automatic cycle, several mechanical movements occur sequentially: the infeed conveyor tilts, the motorized platform rotates, and the pneumatic or electromechanical top arm descends under controlled pressure.
In industrial production, operating guidelines require that personnel keep hands and tools completely clear of the conveyor bed once the roll begins its upward transit. Product alignment, cleaning, or clearing must take place exclusively at the base loading datum prior to cycle start, or while the entire cell is placed in an electrically isolated stop state.
Equipment compliance and machine risk assessment must adhere to local market regulations:
- For CE-marked installations, ISO 12100 defines the core risk assessment and risk reduction methodology.
- EN 415-10 specifies the explicit safety requirements for packaging machines, including protective guarding around tilting conveyors and turning platforms, interlocking access points, and emergency stop circuits.
Selection checklist for a roll stretch wrapper
- Roll diameter, width and weight.
- Roll material and core.
- Film type and layers.
- Rolls per hour.
- Infeed and outfeed heights.
- Floor space and line layout.
Engineering FAQ
Q: How does the roll get onto the wrapper? A: It climbs an inclined roller conveyor and settles on the rotating platform.
Q: How many turns does a roll need? A: About 11 for a 1,600 mm wide roll with 500 mm film at 50% overlap and end turns in our example.
Q: Is a crane or forklift needed to load the roll? A: No. The roll moves on rollers from the infeed up onto the platform.
Q: What turns during wrapping? A: The platform turns the roll while film goes on.
Q: Why add end turns? A: They hold the film edge and cover the roll shoulders.
Q: Should anyone touch the roll during the cycle? A: No. Guide or clear it only with the machine stopped.
Next step
We engineer and deliver your automated roll stretch wrapping system through a structured, three-step project framework:
- Submit your layout drawing with roll sizes, weights, and required output to info@fhopepack.com.
- Receive a proposal within 48 hours, including a customized film consumption and turn calculation plan.
- Book a site survey to verify infeed heights, outfeed transitions, and shop-floor footprint constraints.
Related reading
- Steel coil wrapping machines
- Video: fabric roll stretch wrapping machine
- Video: carpet roll shrinking machine
Sources
- Machine content: FHOPE engineering team, 2026-10-04
- Turn example: our worked example, illustrative values
- Machine in action: our video on YouTube
- Standards scope: ISO 12100:2010, EN 415-10:2014
Last reviewed: 2026-10-29
