Top & Bottom Feed 4-Thread Bag Stitching Machine DN-2LWU

DN-2LWU Left Hand Bag Sewing Machine, Reverse Dual-Feed Head for High-Output Automatic Bag Lines.

The DN-2LWU Left Hand 2-Needle 4-Thread Bag Sewing Machine is an upgraded reverse-direction variant of our core DN-2WU model, engineered as a high-speed industrial chainstitch unit with dual top & bottom feeding mechanism. Designed specifically as an opposite sewing head, it pairs seamlessly with the standard DN-2W (or DN-2WU) to form a complete dual-head assembly-addressing the critical need for two-end sewing in automatic bag-making lines.

For high-volume automatic bag production, a single forward-direction sewing head can't keep up with throughput demands, nor can it handle two-end stitching (bag top and bottom) efficiently. The DN-2LWU solves this by working in sync with its standard counterpart: installed symmetrically at both ends of the production line, the dual-head setup enables simultaneous two-end sewing, drastically boosting overall line output. This robust machine excels in stitching light to heavy-duty bags-including multi-wall paper bags, PP woven bags, and PE plastic bags-supporting both butt sewing and single-side bag bottom sewing for versatile production needs.

Beyond automatic line integration, the DN-2LWU can also be mounted on a dedicated table with a matching motor for standalone use, making it ideal for small-batch production of PP, PE, and paper bags. Its left-hand operation design is particularly user-friendly for left-handed operators, reducing fatigue and improving workflow efficiency.

Core Benefits for Your Factory

• Perfect Pair with Standard Models: Seamlessly matches DN-2W/DN-2WU to form a dual-head system for two-end sewing, maximizing automatic line throughput.
• Dual Top & Bottom Feeding: Ensures stable grip on slippery or thick materials, preventing shifting and delivering neat, consistent seams-no skipped stitches or rework.
• 2-Needle 4-Thread Stitch: Reinforced, tear-resistant seams that withstand heavy loads and rough handling during storage/transport.
• Dual Usage Modes: Integrates into automatic production lines or works as a standalone table-mounted machine, adapting to small-batch and mass-production needs.
• Left-Hand Operator Friendly: Ergonomic design reduces fatigue for left-handed staff, improving operational efficiency and reducing human error.
• Wide Material Compatibility: Works with multi-wall paper, PP, PE, and cloth bags-suitable for diverse packaging scenarios.

Application Scenarios

Automatic bag-making factories (multi-wall paper, PP/PE woven bags), food/chemical/cereal/mineral/sugar processing plants, port bulk packaging stations, and small-batch bag manufacturers-ideal for two-end stitching of light to heavy-duty bags, butt sewing, and bag bottom sewing.

Need to confirm compatibility with your existing DN-2W/DN-2WU machines or automatic line layout? Contact our technical team for detailed specifications, quotation, standalone table & motor configuration details, and sample sewing tests. We'll help you optimize your production line with a tailored dual-head sewing solution.

Applications

 

Paper Bags

PE Bags

Stitch Sample

1. What kinds of bags can your bag sewing machines stitch?
A: Our bag sewing machines perfectly fit PP woven bags, PE bags, jute bags, non-woven bags, fertilizer bags, feed bags and industrial packaging bags. It covers daily packaging and industrial heavy-duty sewing needs.

2. How durable are your industrial bag sewing machines?

A: Our machines adopt heavy-duty cast iron body and high-quality core parts. With regular maintenance, they can run stably for many years with low failure rate.

3. How about the packaging and transportation of that machine?
A: All the machines are packed in standard export cartons or wooden packaging boxes to prevent damage during transportation.

4. What payment terms do you accept?
A: We accept T/T,Paypal,Western union ect.

why choose us

 

our Company

 

PACKSTAR is a leading professional manufacturer of bag sewing machines, bag closing machines and supporting packaging equipment. Our products are trusted by clients in over 30 countries, serving food, chemical, feed, grain, fertilizer and packaging industries.

 

Meanwhile, we offer one-stop services including pre-sales technical consultation, free solution design, on-site installation guidance, long-term after-sales maintenance & spare parts supply.

How To Cooperate With Us?

Welcome to email or call us get the professional sewing solution and quotation.

Our address

No.25,Hi-Tech Zone,Xi'an,710065,China

Phone Number

86-29-81870126,81870128

E-mail

dekoco@vip.163.com,sales@chinapackstar.com

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