A carton wrapping machine is designed to apply secondary packaging to finished cartons. Choosing this equipment often gets confusing because the term can refer to very different packaging results. Do you need a fully folded film wrap around each box, or a wide band that holds several cartons together?
This guide explains the main carton wrapping machine types, selection factors, and other key details first-time buyers should know.
Carton Wrapping vs. Cartoning
First off, let’s clear up these two similar terms that are often confused by people new to the packaging industry.
Cartoning and carton wrapping are two secondary packaging stages positioned at the end of a production line.
Cartoning turns a flat piece of paperboard into a finished retail box to pack the product, while carton wrapping comes afterward and uses flexible film to seal the finished box or to bundle multiple cartons.
What Does a Carton Wrapping Machine Wrap?
The carton wrapping machine we discuss here handles paperboard folding cartons containing blister packs, bottles, jars, sachets, and tubes. They’re not designed for unpackaged products or large corrugated shipping cases. Depending on the machine configuration, these systems can wrap single retail boxes and multipack bundles.
Two Main Types of Carton Wrapping Machines
Carton wrapping machines can be classified into two options depending on the packaging outcome.
1. Carton Overwrapping Machine
An overwrapper covers individual paperboard cartons or bundled boxes with a flexible, heat-sealable film. This secondary packaging improves protection and gives the package a neat, premium appearance.
During operation, the machine measures and cuts the film, wraps it around the box, and tucks the excess material into envelope-style folds at both ends before sealing.
Benefits of Carton Overwrapper
- Full film coverage helps protect against dust and moisture.
- Delivers a premium retail appearance.
- Provides tamper evidence and optional tear tape.
Limitations of Carton Overwrapper
- Not suitable for soft or irregularly shaped cartons.
- The film used must be foldable and heat-sealable.
- Format changeovers require change parts and may take longer.
- Has higher initial costs.
2. Carton Film Banding Machine
A film banding machine is often used to wrap a wide strip of flexible plastic film around a stacked group of paperboard boxes. Unlike overwrappers, it applies only a localized band, leaving the carton sides uncovered.
This system works by feeding a continuous film web to hug the incoming grouped cartons. The overlap is then heat-sealed and cut to create a closed band around the bundle.
Pros of Carton Film Banding Machine
- Uses less film to help save packaging material costs.
- Features tool-free format changeovers to minimize downtime.
- More economical than overwrappers.
Cons of Carton Film Banding Machine
- Can’t provide full protection against contaminants.
- The wrap is prone to tampering.
- Not suitable for heavy items and irregular shapes.
- May crush the box edges.
Box Overwrapping vs. Film Banding: Quick Comparison
| Feature | Carton Overwrapping Machine | Carton Film Banding Machine |
|---|---|---|
| Film coverage | Full | Localized |
| Compatible film | BOPP, OPP, or cellophane | PE |
| Pack style | Smooth gift wrapping | Minimalist belly band |
| Changeover time | 30-60 minutes | 5-10 minutes |
| Typical use | Medicine blister packs, cough syrup, perfume, cigarettes, video games | Pharmaceutical batching, “Buy 1 Get 1 Free” promotions, sleeve labeling |
How to Choose a Carton Wrapping Machine
Not sure which wrapping machine is right for you? We’ve prepared four questions to help you make the right choice.
What wrapping result do you need?
When you need your cartons to be fully enclosed in cellophane film, a carton overwrapping machine is a solid choice. It can wrap single boxes and grouped cartons by folding the entire pack like a gift. The machine is highly favored in the pharmaceutical, cosmetic, and confectionery industries.
Or if you’re just looking for a simple way to hold several rigid cartons together? Go for a film banding machine. It applies a localized film band to secure the bundle, preventing lost items during transport. This pack style consumes less film material and is easier to tear off. The downside is that it can’t fully protect your cartons.
Are your cartons and film compatible with the machine?
Carton overwrapping and banding work best with rigid, rectangular packs. Weak paperboard or protrusions can cause feeding problems and poor wraps. The best way is to send 20 to 50 samples per carton size to the machine vendor for testing. Be sure to fill the cartons with your real product.
Film compatibility is just as important. Not just the film type, provide the vendor with the material’s thickness, width, sealing temperature, and coefficient of friction. Send your film with the actual cartons for a trial so the vendor can verify feeding, folding, sealing, and finished-pack quality.
How many cartons can the machine wrap?
The machine’s published speed is not the final answer. In real-world production, its output will be affected by factors like carton size, film performance, downtime, and rejected packs.
How do you determine whether a machine will meet your target output? This simple formula helps.
| Estimated good throughput = Published speed × Assumed OEE |
This estimate uses the OEE framework described in ISO 22400-2. Note that it is for initial planning only, and the assumed OEE is not an industry benchmark.
Let’s say the carton overwrapper you are considering has a published maximum speed of 40 cartons/min. Operating at 75% OEE, its estimated good output would be:
| 40 × 0.75 = 30 good cartons per minute |
This means if your target is below 30 cartons per minute, this model is suitable. But we still recommend testing your actual cartons and film on the machine to confirm its real capacity.
Will the machine fit into your packaging line?
Whether you choose an overwrapper or a film banding machine, it may not automatically fit your existing line. Use this checklist before buying:
- The machine’s infeed and outfeed heights match your conveyors.
- The carton flow direction suits your current line layout.
- The machine can keep pace with your upstream cartoner and downstream equipment.
- The required power supply, compressed air, and communication interfaces are available.
- Its safety guard signals can be linked with the rest of the line.
Carton Wrapping Machine RFQ Checklist
Ready to request a quote for a carton overwrapper or banding machine? We suggest sending the following information with your RFQ.
- Product and Material Information
- Carton dimensions and filled weights
- Film specifications or samples
- Different carton format technical drawings
- Packaging Format
- Individual-carton or multipack configuration
- Multipack count and arrangement
- Wrapping or banding position
- Capacity and Line Integration
- Target output per shift
- Upstream and downstream equipment information
- Line layout and conveyor direction
- Infeed and outfeed conveyor heights
- Control and communication interfaces
- Factory and Project Requirements
- Available power supply and electrical standard
- Available compressed air supply
- Available installation space
- Budget range
- Optional features like tear tape
Common Carton Wrapping Problems and Fixes
| Common Problem | Likely Cause | Practical Solution |
|---|---|---|
| Wrinkled overwrap | Incorrect film tension
Oversized film Warped cartons |
Adjust the film cut length.
Check carton rigidity and film dimensions. |
| Uneven folded ends | Carton misalignment
Incorrect film length Poorly adjusted folding guides |
Center the carton.
Correct the film cut length. Realign the folding guides. |
| Weak or scorched seals | Incorrect sealing temperature, pressure, or dwell time
Dirty sealing surfaces Incompatible film |
Adjust temperature, pressure, and sealing time.
Clean the sealing surfaces. Replace with the proper film. |
| Film tearing or jams | Excessive tension
Sharp carton edges Misaligned rollers Damaged film Unsuitable film thickness |
Inspect the carton edges and film path.
Align the rollers. Reduce tension. Check the film. |
| Off-center banding | Incorrect guide settings
Poor film tracking |
Adjust the film position.
Calibrate the sensor. |
| Crushed edges | Excessive pusher force or band tension
Weak cartons |
Reduce pressure.
Replace with a wider film. |
Carton Wrapping Machine FAQs
Key Takeaways
- A carton wrapping machine works on finished paperboard cartons in secondary packaging, not on large corrugated shipping cases.
- First, decide between a carton overwrapping machine and a carton film banding machine, as they create different pack styles.
- Do not confuse overwrapping with shrink wrapping or wrapping with cartoning. They are different processes with different equipment.
- If this is your first purchase, sample testing is one of the cheapest ways to reduce risk before you place the order.
