OYANG Leader Machine: High-Speed Fully Automatic Nonwoven Box Bag Production Line
Engineered to eliminate manual assembly bottlenecks in eco-friendly packaging, the OYANG Leader series (OYANG 20, OYANG 19, and SMART 19) provides fully automatic, inline roll-fed conversion from raw fabric to finished 3D rigid box bags at continuous speeds up to 100 bags/min. Built upon heavy-duty cast iron frames milled to a ≤ 0.015mm flatness tolerance via Japanese MAZAK and OKUMA CNC centers, the platform integrates EtherCAT bus multi-axis servo synchronization, patented indirect tape application, and downstream automated packing, delivering an overall equipment effectiveness (OEE) exceeding 92% across PP spunbond, laminated nonwovens, and RPET substrates.
Field Bottlenecks in High-Speed Nonwoven Box Bag Fabrication
Industrial converters operating in high-volume markets frequently encounter structural limitations when scaling beyond 60 bags/min. Conventional mechanical-linkage bag makers struggle to maintain dimensional repeatability and seam strength under continuous thermal and ultrasonic loads.
1. Resonant Vibration and Ultrasonic Horn Misalignment
Standard fabricated steel frames lack the torsional rigidity required to dissipate high-frequency mechanical vibration at operational speeds above 65 pcs/min. As structural harmonics travel through the chassis, the mechanical gap between the ultrasonic horn and the titanium booster shifts dynamically. This variance leads to incomplete polymer crystal melting, resulting in erratic seam peel strengths and a reject rate spiking up to 4.5% on heavy-gauge substrates (≥ 80 gsm).
2. Handle Weld Weakness and Heat Degradation
Direct spot-welding of loop handles introduces intense localized thermal stress into the spunbond nonwoven fibers, degrading their molecular chain orientation. Under tensile stress tests, directly welded loop handles frequently shear at the weld perimeter at loads under 12 kg. For retail, grocery, and industrial packaging, handle tear-out represents the leading cause of customer returns.
Converters seeking to address fabric feed consistency should explore our detailed guide on Ultrasonic Horns & Generators Tuning in Nonwoven Bag Making to balance acoustic resonant circuits against web speed.
OYANG Leader Series: Technical Specifications Matrix
The Leader platform spans multiple automation tiers engineered to address specific throughput demands, substrate structures, and quick-changeover requirements:
| Model Specification | OYANG 20 (Leader-20) | OYANG 19 (Leader-19) | SMART 19 |
|---|---|---|---|
| Production Speed | 80 – 100 bags/min | 70 – 90 bags/min | 90 – 100 bags/min |
| Motion Control Architecture | EtherCAT Bus Multi-Axis Servo | Multi-Axis Synchronous Servo | Bus-Controlled Intelligent Servo |
| Handle Attachment Mechanism | Patented Indirect Tape Applicator | Patented Indirect Tape Applicator | Precision Inline Ultrasonic Welder |
| Mold Changeover Time | Guided Semi-Auto (~15 min) | Standard Mechanical (~25 min) | Fully Automated (90 Seconds) |
| Downstream QC / Packaging | CCD Vision Check + Auto-Bagger Line | Auto Stacker / Manual Packing | Auto Stacker Integration |
| Material Compatibility | PP Spunbond, OPP/BOPP Laminate, RPET | Virgin PP Nonwoven, Printed Spunbond | PP Nonwoven, Lightweight Laminates |
Engineering Foundations: How 130,000ã„¡ Precision CNC Manufacturing Secures Lifespan
OYANG machine frames and motion shafts are not assembled from commercial cold-rolled steel tubing. All load-bearing structural wall plates, cam tracks, and sonic anvils undergo complete stress-relief annealing and are machined across Japanese MAZAK flexible manufacturing cells and OKUMA double-column machining centers at our 130,000ã„¡ manufacturing base.
Figure 1: Japanese MAZAK automated CNC lines ensuring ≤ 0.015mm machining tolerances on all structural wall plates.
Maintaining a structural component tolerance of ≤ 0.015mm ensures that mechanical axis concentricity remains unchanged even after 100,000 hours of continuous high-speed cycling. This dimensional integrity completely prevents side-to-side web drift and eliminates ultrasonic horn corner wear.
Flagship Leader Line Solutions: Deep-Dive Architecture
OYANG 20: Full-Chain Automation for Laminated & RPET Box Bags
The OYANG 20 Fully Automatic Nonwoven Box Bag Machine represents the high-throughput benchmark for converters manufacturing premium shopping bags, takeaway food boxes, and thermal insulation bags.
Figure 2: The OYANG 20 high-speed box bag production platform (80–100 bags/min).
Key structural highlights of the OYANG 20 configuration include:
- Patented Indirect Tape Applicator: Rather than welding raw handle material straight into the bag body, the unit automatically dispenses an internal backing reinforcement strip. This design increases handle tensile strength to > 25 kg without puncturing the exterior decorative film.
- Dual Optical Register Tracking: Forward and trailing photoelectric sensors synchronize printed BOPP lamination patterns to fold lines with a cutting tolerance of ± 0.5mm.
- Smart Line Integration: Directly docks with auxiliary systems like the ONL-DSC300 Automatic Bag Packing Line, executing automatic batch counting, compact compression, and shrink packaging with zero manual touch.
OYANG 19 & SMART 19: High-Reliability Mid-to-High Volume Workhorses
For general commercial converters running standard spunbond PP shopping totes, the OYANG 19 Box Bag Machine provides operational simplicity combined with continuous 70–90 pcs/min output.
Figure 3: OYANG 19 fully automatic nonwoven 3D bag converter.
When seasonal packaging orders require frequent dimension adjustments, the SMART 19 replaces manual tooling adjustments with an intelligent servo-driven mold changeover system, reducing product dimension switchover times down to 90 seconds.
Engineering Demonstration: OYANG Intelligent Line Video
Observe the multi-axis synchronized web guiding, ultrasonic horn resonance tuning, and inline handle welding of the Leader platform:
Related Engineering Guides & Technical Resources
- Non Woven Bag Plant Cost & ROI Feasibility Guide : Comprehensive breakdown of capital expenditure, raw nonwoven web consumption, power usage, and payback timelines for fully automatic lines.
- Ultrasonic Non Woven Bag Making: Horns & Generators : Deep dive into automatic frequency tracking, horn steel alloy selection, and avoiding thermal crystallization defects on laminated films.
- OYANG Machinery Group Corporate Engineering Guide : An overview of the integrated smart factory ecosystem, MAZAK manufacturing facilities, and R&D standards.
Engineering Handbooks & Machine Layout Catalogs
Access factory floor footprint specifications, electric load requirements, and comprehensive tooling dimensions:
Download Nonwoven Machine Line Catalog (PDF) Download OYANG Corporate Machinery Catalog (PDF)Frequently Asked Questions (FAQ)
Why is the OYANG Leader series preferred for food packaging and reusable sweet box applications?
OYANG Leader box bags feature a self-standing, rigid rectangular base without manual creasing, delivering stable stacking for food containers, sweet boxes, and heavy garment retail. The inline ultrasonic folding process produces precise 90-degree side gussets and clean edge profiles that maintain aesthetic presentation while meeting environmental ban compliances on single-use thin plastics.
How does the patented indirect tape applicator enhance bag load-bearing performance?
Standard ultrasonic loop handle welding applies direct thermal energy to the bag wall, often causing local fiber thinning and notch brittleness. OYANG’s indirect tape applicator automatically positions a separate reinforcement strip across the joint area prior to ultrasonic welding. This spreads tensile peel forces evenly across the matrix, raising continuous handle load capacity to over 25 kg without substrate tearing.
Can the OYANG Leader series process post-consumer RPET nonwoven fabric?
Yes. OYANG Leader machines are engineered to handle RPET (Recycled Polyethylene Terephthalate) nonwoven rolls through closed-loop tension regulation and frequency-matched ultrasonic generators. RPET exhibits a higher tensile strength and different melting curve than polypropylene, which OYANG’s digital ultrasonic tracking manages without scorching or crystallizing the weld zone.
How does the automated packaging line connect with the OYANG 20 production floor?
The output of the OYANG 20 connects directly to downstream handling units like the ONL-DSC300 packing line or ONL-BP500 automatic bagging machine. Finished box bags are counted optically, stacked in user-defined batch quantities, flattened under controlled compression, and wrapped into outer protective poly-bags or secondary bundles, reducing packaging labor to a single monitoring technician.