Bag sewing thread 12/4

Mar 2, 2017
3 min read

Updated: Jul 5

NE12/4 is a high-strength polyester bag sewing thread engineered for industrial-grade sack closing operations. Backed by consistent quality, broad application compatibility and strict production safety standards, it is the preferred choice for agricultural and industrial packaging. It enables efficient, secure sack sealing, reduces packaging damage and improves overall operational efficiency.

Core Specifications & Material

Material: 100% premium polyester staple fiber. It delivers excellent toughness, abrasion resistance, high tensile strength, colorfastness and aging resistance, making it suitable for demanding operating environments including outdoor and humid conditions. It resists breakage and loosening over extended use, effectively preventing packaging damage caused by thread failure.

Specification: NE12/4 (Nm20/4). Its uniform yarn diameter and smooth feed characteristics support high-speed operation across all types of bag sewing machines, minimizing thread jams, skipped stitches and other issues to deliver neat, secure seams.

Flexible Weight Options & Secure Packaging

We offer a full range of spool weights to match different operational scales: 200g, 1kg, 2kg, 3kg, 5kg, 8kg, 8oz, 4.5lb, 20lb and more. Smaller spools are ideal for small-batch operations or backup use, while larger spools support continuous high-volume production, reducing thread changeover frequency and boosting output.

1kg spools: 24 cones per carton
2kg spools: 12 cones per carton
3kg & 5kg spools: 6 cones per carton

All spools are individually shrink-wrapped for moisture, dust and damage protection. Produced in strict compliance with US FDA food contact standards and formulated with food-safe silicone lubrication, the thread is non-toxic and eco-friendly, suitable for direct use in food-grade packaging such as sugar sacks to meet global regulatory requirements.

Wide Range of Applications

This thread is widely used across agricultural and industrial packaging sectors for secure sack closing. It is particularly suited for:

Agricultural packaging: Closing sugar sacks, PP woven bags, grain sacks, feed bags and more
Industrial packaging: Sealing building material bags, chemical sacks, fertilizer bags and other industrial packaging. It is a core consumable for industrial packaging operations.

Full Compatibility with Leading Bag Sewing Machines

This thread offers exceptional machine compatibility, working seamlessly with mainstream high-speed portable and heavy-duty bag closers on the market with no additional adjustment required. It outperforms standard bag sewing threads in adaptability, reducing equipment setup costs and ensuring smooth, uninterrupted operation.

Compatible brands and models include, but are not limited to:

Fischbein: Empress 100, 101 (Tape), 200 (HS), 201 (HS Tape), Model F
Union Special: BC200 (UHS), BC-e 200, 80800, 2200, 3000, 4000, 5200
Other brands: Siruba AA6, YAO-HAN, JUKI and more

Stable Tensile Performance for Diverse Requirements

This thread delivers outstanding tensile performance with an average breaking strength of approximately 8.0 kg. It reliably seals packaging sacks weighing up to 40 kg, producing flat, secure seams. It is highly resistant to thread loosening, breakage and stitch failure, effectively preserving packaging integrity and preventing material leakage and loss caused by thread damage.

For packaging requirements exceeding 40 kg, we provide professional customized recommendations tailored to your specific operating scenario, helping you select the optimal product solution to balance cost and performance for efficient, hassle-free packaging operations.

Partnership & Service Commitment

We welcome you to contact us anytime for detailed product specifications, free sample trials and exclusive quotations. Our team provides one-on-one professional consultation to answer all your questions and help you optimize your packaging workflow.

Choose DEMAN as your reliable, efficient packaging solution partner — we work with you to achieve mutual success and long-term win-win results.