You have a high production capacity and the product is perfect. But when it’s time to package the goods for transport, you hit a bottleneck.
Your single-line machine slows down the packaging process, forcing the entire factory to halt for the packer.
This is where multi-line packaging machines change the game. You don’t even need to expand your factory floor and you’d watch your output multiply significantly.
Keep reading to discover all the intricacies you need to know before investing in your multi-line packing machine.
What is a Multi-Line Packing Machine, and How Does It Work?
Multi-line packing machines package multiple streams of products into individual pouches simultaneously. They typically comprise multiple lanes (e.g., 4, 6, 8), each of which fill, seal and cut the packages within them.
Unlike standard Vertical Form Fill Seal (VFFS) machines that produce one bag at a time, a multi-line machine splits a single wide roll of film into multiple parallel lanes.
This allows the machine to form, fill, and seal several sachets or stick packs simultaneously. They are the industry standard for single-serve products like:
- Stick Packs: Sugar, instant coffee, drink mixes, and probiotics.
- Sachets: Ketchup, mayonnaise, shampoo, and pharmaceutical powders.
Your product is fed into the machine which disburses it across the various lanes in accurately measured amounts to ensure uniformity in packaging. The individual pouches and pre-made bags are also fed into the machine.
Advantages of A Multi-line Packaging Machine
When you replace a bank of single-lane machines with one multi-line unit, the math changes immediately.
The 10x Output Rule
A standard single-lane machine caps out around 60 packs per minute. A 10-lane multi-line machine running at the exact same cycle speed hits 600 ppm. You get ten times the volume without running the machine any faster, which keeps wear and tear low.
Labor Efficiency
To match that 600 ppm output with single-lane equipment, you’d need ten separate machines and at least 3-4 operators to manage them. A multi-line machine requires one skilled operator. You are slashing your labor cost per unit instantly.
Revenue per Square Meter
Factory floor space is expensive real estate. This machine offers the highest production density in the game. You get maximum output in a compact footprint, leaving you room for the boxers and palletizers downstream.
30% Film Savings
If you switch to Stick Packs, you are using up to 30-40% less film compared to flat sachets (due to the efficient tube shape). Over a production run of 5 million units, the material savings alone can often offset your energy costs.
Retail Scalability
Big retailers don’t order in thousands; they order in millions. You can’t service a Costco or Tesco contract with a single-lane setup. A multi-line system gives you the surge capacity to say yes to the big contracts without panicking about deadlines.
The Multi-Line Packing Process: A Step-by-Step Breakdown
This is how the multi-line packaging machine will turn a roll of film into your speedily packaged product:
- Film Unwinding: At its rear, the machine unwinds a master roll of film. It features tension control systems to ensure the film stays tight with no wrinkles.
- Slitting: The wide film then passes through rotary knives that cut it into narrow, individual strips (one strip for each lane).
- Forming: Each strip passes over a forming collar, curling the film into a tube shape.
- Sealing (Vertical): The multi-line packing machines feature heated jaws that seal the vertical edges of the tube. This creates a long, open-ended cylinder.
- Filling: High-precision dosing systems (augers for powders, pumps for liquids) drop the exact amount of product into the tubes simultaneously across all lanes.
- Sealing (Horizontal) & Cutting: Horizontal jaws close to seal the top of the filled sachet and the bottom of the next one. A blade then cuts them apart, dropping the finished packs onto a conveyor for final processing.
Essential Equipment for Multi-Line Packing
To maximise the efficiency of your multi lane packaging machines, you need the right hardware. The core and supporting machines ensure that the packaging process is up to speed with your high volume productions.
Multi-Lane Filling and Sealing Machines
Not all multi-line filling machines work for all products. The right one for you depends on your product texture.
- Stick Pack Machine
These produce long tubular packs such as sugar sticks. Free flowing powders and liquids are well suited for this machine which uses less packaging film.
- Flat Sachet Machines
If you want your product to feature a premium billboard branding, this is the machine for you. They create 4-side sealed rectangular packets suitable for medical patches or large volumes of powder.
Ancillary Equipment
To maximise the fast output of your multi-line packing machine, here are some essential add-ons:
- Automated Cartoning Machine: These machines count and stack pouches into retail boxes. Something that’s manually draining with as high as 500+ sachets per minute.
- Checkweighers: This machine ensures your products comply with weight regulations. It automatically rejects packages that are too light or too heavy.
- Date & Batch Printers: Inkjet or thermal transfer printers that stamp expiry dates on every individual sachet before it is filled
Multi-Line Packing Machine Costs: What to Expect
The price of entering into a multi parking line varies based on origin, speed and automation levels.
- Entry-Level (Semi-Automatic): Basic machines (often 2-4 lanes) can range from $20,000 to $50,000. As the name implies, they often require more manual adjustments and have lower speeds.
- Mid-Range: You can get reliable machines for your steady SME production between $80,000 and $150,000. These offer better PLC controls (like Siemens or Omron) and higher durability.
- High-End: Top-tier machines come with top-tier costs. The extreme precision, 24/7 run capability, and advanced servo-motor technology cost $250,000 to $500,000+. Each of which work to minimize downtime.
How to Ensure Quality Control in Multi-Line Packing
The high speed is a plus but it comes with high risks. If one land fails, you risk producing numerous defective packs before noticing.
Here are some quality control methods for your multi-line packing machines:
- Prevent Film Drift: If the film isn’t perfectly aligned, your sachets will look crooked or fail to seal. So, you should use machines that feature automatic web starching sensors. These correct the film position in real time.
- Monitor Seal Integrity: If the temperature drops on Lane 3, Lane 3 will leak. Make sure your machine has individual temperature controls for every single lane.
- Regular Calibration: Vibration can cause dosing cups or augers to drift over time. Schedule weekly calibration of filling weights to prevent overfilling your pouches.
Top 5 Multi-Line Packing Machine Companies and Suppliers in the Market
You need a good multi-line packaging machine, but you also need the right partners for the parts and materials. Here are some solid companies and suppliers to build your line:
- Guangdong Eastern Packaging Machinery (EasternPack)
If you want a machine that balances performance with a price tag that makes sense, EasternPack is the one to look at. We’ve been doing this for over 15 years in China, and we specialize in customizing these multi-lane machinery.
Our principle is based on actually listening to what you’re packing, whether it’s sticky gel or fine powder. We’ve built a multi-line packing machine to handle it.
- Videojet Technologies
VideoJet provides the machinery you need to print expiry dates on those packs. Their machines mount right inside the machine, ensuring your packaging doesn’t slow down.
- Amcor
The quality of the plastic you feed your machine determines the quality of the pouches that it packages. Amcor makes the high-tech laminates you need. If you want to make sure your product (such as powders) stay fresh and don’t turn into a brick, you need their high-barrier films.
- Siemens
You don’t buy Siemens directly, but you want a machine that uses Siemens parts. They make the PLCs (the computers) and drives. Why does this matter? Because if a part breaks in 5 years, you can find a replacement Siemens part anywhere in the world.
- Festo
The hissing sound you hear on a machine is the pneumatics, that is, the air power moving the knives and jaws. Festo is the gold standard here. Good pneumatics mean clean cuts and fewer jams.
Conclusion
Upgrading to a multi-line system is the difference between running a workshop and running a factory. It is a significant investment, but the 10x speed, reduced labor, and scalable volume is undeniable.
Don’t let your packaging line be the reason you turn down a big retail contract. Audit your current production, define your target speed, and reach out to a partner like Guangdong Eastern Packaging Machinery to build a solution that actually fits your floor.