Multi-Lane Pre-opened Bag Making Machine
The PRE-600 converts a single wide roll of poly film into 1 to 4 finished pre-opened bags on a roll in one process. It forms the film into tubes, seals, perforates, and cuts the bags synchronously, so a packaging producer can make multiple lanes of small or medium width bags without needing separate machines for each lane. This is useful when a customer has only one large-width film roll after printing and needs to produce smaller width bags efficiently.
- Makes 1 to 4 lanes of pre-opened bags on a roll from one wide film roll, reducing machine count and floor space
- Eliminates the need to slit film into narrow rolls before bag making, saving time and setup effort
- Produces small width bags (5cm–12cm) without requiring a separate slitting machine
- Synchronous punching, sealing, perforation and cutting ensure consistent bag quality
- Higher output per machine compared to single-lane models when making small bags
Why Buyers Choose It
- Producing small width bags requires separate slitting and bagging machines, increasing cost and complexity
- One machine per lane leads to high capital cost and floor space use when making multiple lanes
- Film slitting before bag making adds time and handling steps, slowing production
- Inconsistent bag length or seal quality from manual or multi-step processes
- Limited capacity to convert one wide film roll into multiple finished bag rolls efficiently
Who Runs This Machine
- Poly bag makers supplying pre-opened bags on a roll to autobaggers
- Packaging converters adding bag-making to their existing film processing line
- E-commerce fulfilment operators running automated bagging systems
- Small to mid-sized producers making multiple bag lanes without investing in multiple machines
Where This Machine Is Used
- Poly bag makers producing pre-opened bags on a roll for e-commerce autobag lines
- Packagers switching from plastic bags to paper or film bags with pre-opened features
- Converters adding bag-making capacity to existing film slitting or printing lines
- Fulfilment centres needing consistent, high-speed bag feeding for automated packing
- Manufacturers producing small width bags (5–12cm) for cosmetics, pet products or electronics
Features And Specifications
Technical features
- Multi-lane design allows 1 to 4 lanes of pre-opened bags to be made simultaneously
- A frame folding section with side sealing blade forms the film into tubes
- Heat sealing and slitting blades divide the wide film into multiple narrow tubes before bag forming
- Synchronous punching, sealing, perforation and cutting ensure consistent bag formation
- Adjustable speed from 30 to 150 pieces per minute to match downstream line speed
- Pneumatic or mechanical control for consistent seal and perforation depth
- Automatic web guide system keeps film aligned during high-speed operation
- Rewinding system with 3 inch (76mm) core for standard bag shafts
Specifications
| Machine model | PRE-600 |
|---|---|
| Max width of bag-making | 550 mm |
| Max length of bag-making | 1000 mm |
| Max diameter of unwinding | 600 mm (special design available) |
| Max diameter of rewinding | 400 mm (special design available) |
| Max speed of bag-making | 30–150 pcs/min |
| Paper core of unwinding | 3 inch (76 mm) |
| Paper core of rewinding | 3 inch (76 mm) |
| Thickness of film (single layer) | 0.008–0.15 mm |
| Electric Power | 12 kW |
| Overall Dimensions | 5800 x 1200 x 1600 mm (L x W x H) |
| Weight | 2000 kg |
How The Machine Runs
Materials
- Poly film from 0.008 to 0.15 mm thick
- Single layer film used in printing or converting lines
- Film with a width suitable for feeding into the multi-lane system
- Optional film with pre-printed patterns or easy-open perforation lines
Quality Control
- Automatic web guide maintains alignment across all lanes during high-speed operation
- Heat sealing temperature and pressure are monitored to ensure consistent seals
- Perforation depth and cut accuracy are verified during test runs
- Each lane is checked for uniform bag length and seal integrity before shipment
- Machines are test run with customer film before delivery to verify performance
Customisation
- Unwinding and rewinding diameters can be specially designed for larger or smaller rolls
- Number of lanes can be adjusted to 1, 2, 3, or 4 based on production needs
- Sealing and perforation patterns can be modified for different bag types
- Power supply can be built to match the voltage and frequency of the destination country
- Additional features like automatic film splicing or tension control can be added
Certifications
- ISO9001:2000 certificate obtained in 2005
- CE certificate obtained in 2006
How It Compares
| Single-lane pre-opened bag machine | The multi-lane machine produces 1 to 4 lanes at once, reducing machine count and floor space when making small bags |
|---|---|
| Separate slitting and bag-making machines | This machine combines slitting and bag making in one line, reducing handling and setup time |
| Zig-zag or fanfold pre-opened bag machines | This machine is better for small width bags; zig-zag and fanfold models are better for wider bags |
Running It On Your Floor
- Load the poly film roll onto the 3 inch air shaft, ensuring it is centered and secure
- Set the desired number of lanes and bag length on the control panel before starting
- Start at the lowest speed (30 pcs/min) and gradually increase while monitoring alignment
- Check the first few bags for seal quality, perforation depth, and consistent length
- Keep the sealing and slitting blades clean to avoid film tearing or inconsistent cuts
Multi-Lane Pre-opened Bag Making Machine FAQ
What is the maximum bag width and length this machine can make?
Max bag width is 550 mm and max length is 1000 mm, depending on film width and lane count.
Can it make small width bags like 5–12 cm?
Yes, the multi-lane design allows production of small width bags without separate slitting.
How many lanes can it produce at once?
It can produce 1 to 4 lanes of pre-opened bags simultaneously from one wide film roll.
What power supply do you provide?
Standard is 12 kW; we can build to the voltage and frequency of your country on request.
What is the machine footprint and weight?
The machine is 5800 x 1200 x 1600 mm and weighs 2000 kg, so plan for a level floor and forklift access.
Is the rewinding core size adjustable?
Standard is 3 inch (76 mm); special designs are available for different core sizes.
Do you have quality certifications?
Wenzhou Snda Machinery holds an ISO9001:2000 certificate obtained in 2005 and a CE certificate obtained in 2006.
Machines Often Bought With It
2 Lines Pre-opened Bag On-a-roll Making Machine
The PRE-600 converts a single wide roll of poly film into two parallel rolls of pre-opened bags in a continuous process.
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Fanfold Pre-opened Poly Bag Making Machine with Zig-zag Folding
The PRE-600 converts a reel of single-layer poly film into fanfold pre-opened bags on a roll with zig-zag point connecti.
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Model 450 Packing Machine
The Model 450 Packing Machine automatically feeds pre-opened PE bags from a roll, sets the bag, and seals it in one cont.
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Model 550 Packing Machine with computer and printer
The Model 550 Packing Machine converts pre-opened PE bags on a roll into sealed, labelled bags at speeds up to 1800 bags.
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Guides On This Material
Quote The Multi-Lane Pre-opened Bag Making Machine
Send your paper or film specification and target output. We will confirm the model, the lead position and the price.