When it comes to crafting strong and durable jumbo bags, precision and reliability are essential. That’s where NEWLONG Industrial Co. Ltd., based in Japan, stands out. Their range of sewing machines is trusted across the world for consistent stitching quality, speed, and long-lasting performance.
Below is an overview of some of their most reliable and high-performing models designed specifically for jumbo bag production.
DHR-6 — Special Sewing Machine
The DHR-6 is a specialist when it comes to heavy-duty bag production. Designed for container bags, this model delivers accurate, clean seams with its double-thread chain stitch and overseaming stitch. Built with stability and power in mind, it provides the precision needed for industrial-scale operations.
Specifications:
Max Speed: 1,400rpm / 1,200rpm
Seam Type: Double Thread Chain Stitch, Overseaming Stitch
Stitch Width: 6.5–15 mm
Bag Material: Container Bag
Thickness: 17–20 mm
Needle: UY9853G 430
Oiling: By Hand – Oiler
Oil Type: Tellus #32
Weight: 38.0 kg
Features: Over-seaming width 12 mm (15 mm), Upper & Lower sending, Double Needle
Related Model: THR-6
DR-7UW — High-Speed Bag Sewing Machine
The DR-7UW is built for speed and consistency. It offers a smooth operation even with thick container bag materials and maintains clean, durable seams at high rotation speeds. Its simple hand-oiling system ensures reliability while keeping maintenance easy.
Specifications:
Max Speed: 1,400rpm / 1,200rpm
Seam Type: Double Thread Chain Stitch
Stitch Width: 7–12 mm
Bag Material: Container Bag
Thickness: 18 mm
Needle: UO-H34 #29
Oiling: By Hand – Oiler
Oil Type: Tellus #32
Weight: 34 kg
Features: Upper & Lower sending, Double Needle
Related Model: TR-7UW
DR-3A — Special Sewing Head
The DR-3A is designed for demanding industrial applications, particularly for thick polypropylene container bags. Its high speed and double-thread chain stitch allow it to handle tough materials efficiently while maintaining precision and quality in every seam.
Specifications:
Max Speed: 2,000rpm / 1,850rpm
Seam Type: Double Thread Chain Stitch
Stitch Width: 6.5–15 mm
Bag Material: PP Container Bag
Thickness: 15 mm
Needle: UO-H33 #27
Oiling: By Hand – Oiler
Oil Type: Tellus #32
Weight: 33 kg
Feature: Thick material bag-making sewing head
Related Model: TR-3A
HR-2A — Special Sewing Head
The HR-2A is a versatile sewing head suitable for a range of materials including jute, polypropylene, and container bags. It supports multiple overseaming widths and delivers strong, double-thread stitching ideal for heavy industrial packaging.
Specifications:
Max Speed: 2,000rpm / 1,850rpm
Seam Type: Overseaming Stitch
Stitch Width: 6.5–15 mm
Overseaming Width: 10 mm / 15 mm / 19 mm
Bag Material: Jute, PP, Container Bag
Thickness: Jute Bag 12 mm
Needle: UO1970 400
Oiling: By Hand – Oiler
Oil Type: Tellus #32
Weight: 33 kg
Feature: Double Thread System
Related Model: TH-2A
DKN-3WGP — High-Speed Bag Sewing Machine
With a maximum speed of 4,000rpm, the DKN-3WGP is built for large-scale production lines where both speed and accuracy matter. Its automatic oil supply ensures smooth operation with minimal downtime, and its double-needle feature delivers uniform results for paper and PP bags.
Specifications:
Max Speed: 4,000rpm
Seam Type: Double Thread Chain Stitch
Stitch Width: 4–9 mm
Bag Material: Paper, PP
Thickness: Paper Bag 4P with a Tuck
Needle: UY144GS200
Oiling: Automatic Oil Supply
Oil Type: Tellus #32
Weight: 28.5 kg
Feature: Double Needle
Related Model: TKN-3
DS-9C — High-Speed Bag Closing Machine
The DS-9C offers a perfect blend of automation and precision for bag closing operations. Its automatic crepe tape cutter and oil bath system make it a dependable choice for long production hours. It ensures efficient, clean closures for both paper and polypropylene bags.
Specifications:
Max Speed: 2,700rpm
Seam Type: Double Thread Chain Stitch
Stitch Width: 7–10.5 mm
Bag Material: Paper, PP
Thickness: Paper Bag 4P with a Tuck
Needle: DR-H30 #26
Oiling: Oil Bath
Oil Type: Tellus #32
Weight: 41 kg
Feature: Automatic Crepe Tape Cutter
Related Machines: A-Type Conveyor, Automatic Bagging Machine, A1-PB
Stitch Samples
Each NEWLONG machine produces a distinct stitch pattern, offering strength, precision, and consistency for industrial-grade packaging applications.
Stitch Variations: HR-4N, HR-2A, DS-9, DR-3A, DHR-6, DR-7UW, DKN, DN-2W, NP3 II
Conclusion
NEWLONG sewing machines combine speed, durability, and technical excellence. Whether used for heavy-duty jute bags or lightweight paper packaging, these machines provide dependable stitching solutions for modern production lines. With Japanese craftsmanship at their core, they continue to set the standard for quality and reliability in jumbo bag manufacturing.