Retrofit Existing Production Line with Middle Bag Packing Machine – Seamless Integration Solution for Upstream & Downstream Processes

Many tissue manufacturers face a common pain point: their existing production lines including rewinder, slitter and single-pack machines are running stably, while the middle bag packing stage still depends on manual bagging. Manual packing brings high labor cost, inconsistent packaging appearance and frequent counting errors, which easily becomes a capacity bottleneck during peak season. Replacing the whole downstream packaging line requires huge investment, long shutdown time and major rearrangement of workshop layout.

We are a professional tissue middle bag packing machine manufacturer. We specialize in retrofitting old tissue lines with automatic middle bag packers. There is no need to remove your original functional machines. With customized conveyor connection, servo synchronization and signal communication adjustment, our tissue middle bag packing machine can work synchronously with upstream single-pack machines and downstream case packers or palletizers. This upgrade converts manual semi-automatic packing into fully automatic middle bag packaging, greatly cutting retrofitting cost and production loss.
 

Why Choose Retrofit of Existing Line Instead of a Brand-New Complete Packaging Line

Tissue factories traditionally have two options: keep manual packing or buy a full new downstream packaging line. Both have obvious drawbacks:

• Manual packing: Labor shortage, unstable speed, broken bags and miscounting; hard to handle large export and supermarket orders.
• Full new packaging line: High capital cost, large space occupation and long commissioning downtime, bringing heavy financial pressure.

Our retrofitting solution to add a tissue middle bag packing machine features minimal modification, maximum reuse of your current production assets and fast commissioning. It is a popular automation upgrade choice for tissue mills worldwide.

Our Standard Seamless Integration Retrofit Workflow

We supply not only standalone machines, but also one-stop turnkey retrofitting service for soft facial tissue, regular tissue and cotton wipes.

1. On-site Survey & Customized Solution Design Our engineers evaluate your original line layout, discharging speed of single pack machine, conveying height, available space and communication protocol of downstream equipment. We confirm straight connection, side feeding or turning collation solution, then provide layout drawing and electrical synchronization plan. Our machine is compatible with most old single-pack machines of different brands.
2. Custom Transfer Conveyor & Collating Mechanism Custom transition conveyor and pack arranging structure are equipped to prevent skewed packs, stacking and jamming. Compact design takes little floor space, ideal for old workshops with limited area.
3. Servo Synchronization & Signal Linkage (Core of Seamless Integration) The servo system of the middle bag packing machine communicates with the upstream single-pack machine. The packing speed automatically follows feeding speed. It will slow down or pause when upstream feeding stops to avoid pile-up and empty sealing. Reserved signal output connects to downstream case packing and palletizing equipment for continuous automatic production.
4. Independent Electrical Matching & HMI Setting We will not rewrite the core program of your original machine. An independent signal interaction module ensures the stability of your existing equipment. Multiple product recipes are saved on HMI; you can switch different pack quantities and bag sizes with one click.
5. Installation, Trial Run, Training & Handover Modular installation can be scheduled during off-shift or slack season to minimize production loss. We test running speed, sealing quality, counting and alarm functions on site, train operators and maintenance staff, and hand over complete mechanical and electrical documents.
    

Key Advantages of Our Retrofit Solution

✅ Lower investment & faster ROI Only the middle bag host plus connection accessories are required. Your rewinder, slitter and single-pack machines remain in use. You can save a large budget compared with buying a full new downstream packaging line.
✅ True seamless process linkage Continuous workflow from single pack discharging → middle bag sealing → case packing. Manual transfer is eliminated to reduce pack scratching and bag damage.
✅ Short shutdown time and controllable production loss No large-scale frame demolition. Long-time full-line stop is not required.
✅ Flexible for multiple product specifications Supports various pack configurations, compatible with PE plain bags and printed color bags for domestic and export orders.
✅ Stable performance for tissue workshop environment Servo driving system with reliable brand components. Equipped with bag shortage alarm, no-pack stop and jam protection. As direct factory supplier, we offer stable spare parts and remote technical support.
✅ Expandable for future upgrade Communication interfaces are reserved for later addition of case packer, palletizer or marking machine. You can realize automation upgrade step by step.

Who Is Suitable for This Retrofit Project?

• Factories with stable single-pack machines but manual middle bag packing
• You want to boost packing capacity and reduce labor while keeping a limited budget
• Limited workshop space that cannot accommodate a full new packaging line
• Producing both domestic and export orders with frequent packaging style changes
• Planning phased automation and prioritizing the middle packing bottleneck
   

FAQ for Overseas Clients

Q: Can your middle bag machine connect to single-pack machines of other old brands? A: Yes. We are not locked to specific upstream machine brands. We customize conveyor and synchronization scheme according to your discharging type, height and production rhythm.

Q: What running speed can we reach after retrofit? A: The speed will be matched to your upstream single-pack machine capacity. Our servo follow-up design ensures the middle bagger will not become a new bottleneck.

Q: Will the retrofit void the warranty of my original equipment? A: We adopt independent connection control. The core control system of your original machine will not be modified, so the original warranty stays valid.

Q: Can you support overseas installation and commissioning? A: Yes. We export tissue packing machines worldwide. We can provide drawing guidance, remote debugging, or arrange engineer on-site service. Our machines meet CE standards for export.

Conclusion

Automation upgrade for tissue production does not mean tearing down your existing line. Retrofitting your old line by adding a tissue middle bag packing machine with seamless upstream and downstream connection is a cost-effective choice for tissue mills. You can fully utilize your current production assets, solve the manual packing bottleneck, cut labor cost, improve packaging consistency and fulfill large export and supermarket orders.

If you have an existing tissue line and want to get a feasibility assessment, layout plan or quotation, please send us your line photos, running speed and product specifications. Our engineer team will prepare a customized retrofitting solution for you.

WhatsApp: +86 1599852935
Email: ailixingmachinery2018@gmail.com
Company:Dongguan Ailixing Machinery Co.LTD.