Non Woven Box Bag Machine with Indirect Tape Applicator: Consumable Cost Optimization
A non woven box bag machine with indirect tape applicator incorporates a patented intermittent adhesive feeding mechanism engineered to apply double-sided tape exclusively where structural bonding is required, bypassing the bag’s side gusset fold. By eliminating continuous tape application across non-bonding side dimensions, this indirect gluing bag machine architecture saves approximately 140 mm of adhesive tape per bag, translating into verified consumable cost reductions exceeding $16,800 USD annually for converters operating at 80 to 100 bags per minute.
Video: Setup, pneumatic tensioning, and electronic eye registration of the indirect tape applicator on OYANG box bag machinery.
The Engineering Flaw of Continuous Tape Application
When converting polypropylene (PP) rollstock into structured 3D box bags, double-sided release tape is applied inline along the top hem or bottom flap to permit final peeling and closure by retailers or consumers.
On legacy converting setups, tape unwinds under continuous friction against the moving non-woven web:
- Unnecessary Gusset Coverage: The adhesive tape spans the entire web width—covering the front panel, back panel, and both side gussets. However, when the 3D box bag expands into shape, the adhesive on the inward-folded side gusset provides zero functional bonding utility.
- Gumming and Web Jamming: Continuous adhesive tape exposed across fold lines frequently makes accidental contact with rotary cutters and gusset-tucking fingers, accumulating glue residue that causes costly web-tear shutdowns.
- Excessive Consumable Overhead: Converters essentially pay for hundreds of kilometers of high-grade adhesive film every month only to fold it into dead internal seams.
Financial Model: How Indirect Taping Saves $16,800 USD Annually
The cost difference between continuous taping and OYANG’s patented box bag glue saving technology can be mathematically quantified using standardized converter production parameters:
Baseline Industrial Plant Operating Parameters:
- Operating Velocity: 80 bags/min
- Shift Structure: Two 10-hour shifts/day (20 hours net running time at 85% OEE = 81,600 bags/day)
- Annual Operating Days: 300 production days/year (Annual Line Output: 24,480,000 bags)
- Bag Dimensions: 320 mm (Width) × 280 mm (Height) × 140 mm (Gusset Width)
- Saved Tape Length: 140 mm (0.14 m) per bag (The side gusset span skipped by indirect taping)
- Double-Sided Tape Unit Cost: $0.0049 USD per meter ($4.90 USD per 1,000-meter industrial spool)
Result: By upgrading a single converting line to an indirect tape sealing applicator, a packaging plant recovers $16,800 USD every 12 months in pure cash flow without altering bag material grammage or structural strength.
Mechanical Operation: Dual Electronic Eyes & Cam-Synchronized Cutter
Unlike continuous contact rollers, OYANG’s non woven bag tape applicator uses a high-speed mechatronic assembly controlled via the primary machine motion bus:
Dual Optical Sensors (Photocell Eye)
Precision dual optical sensors read print registration marks in real time. They calculate the precise millisecond coordinate where the front panel ends and the side gusset begins, signaling the pneumatic solenoid to lift.
Pneumatic Cam Retraction
A low-inertia pneumatic cylinder lifts the adhesive press roll away from the substrate as the side gusset passes. The tape is cleanly sheared by a micro-serrated blade, leaving the gusset area completely clean and free of glue.
Zero-Slip Electronic Tension
To prevent tape stretch or snapback during high-speed intermittent stops (cycling 80–100 times/min), an independent torque servo maintains constant unwind tension on the adhesive tape spool, avoiding adhesive drift.
Performance Matrix: Continuous Taping vs Indirect Tape Applicator
| Performance Parameter | Traditional Continuous Taping System | OYANG Indirect Tape Applicator Line |
|---|---|---|
| Tape Application Mode | Continuous full-width contact | Intermittent servo/photocell skip taping |
| Adhesive Consumption per Bag | Full width (e.g., 460 mm) | Bonding area only (e.g., 320 mm; saves 140 mm) |
| Annual Tape Overhead (80 BPM line) | ~$55,100 USD / year | ~$38,300 USD / year (Saves $16,800) |
| Blade & Cutter Gumming Frequency | High (Requires daily solvent cleaning) | Negligible (Cutters contact clean fabric) |
| Maximum Operational Speed | 60 – 75 bags/min (Web tension drag) | 80 – 100 bags/min (Zero drag during skip phase) |
| Bag Opening Smoothness | Gussets frequently stick together internally | Smooth, clean 3D box bag pop-open |
Japanese MAZAK & OKUMA CNC Machining Guarantees Taping Accuracy
Intermittent mechanical cycling at 100 bags per minute requires the pneumatic tape arm to actuate, shear, and re-engage within a 40-millisecond window. Any flexure or vibration in the mounting bracket causes the tape to miss the target bonding zone, ruining the bag.
Precision milling of high-speed cam tracks and applicator brackets on Japanese MAZAK CNC centers inside OYANG’s facility.
All tape applicator mounting bridges, pneumatic cylinder slide blocks, and guide rollers are machined on Japanese MAZAK and OKUMA 5-axis CNC machining centers to geometric tolerances of ≤ 0.015 mm. This structural rigidity ensures repeatable tape landing precision (±0.5 mm) across continuous 24/7 industrial production runs.
Machines Equipped with Indirect Tape Applicators
OYANG 18 Converting Line
The industry standard for adhesive efficiency. Combines fully automated 3D box bag forming with an integrated indirect tape applicator, saving up to $16,800/yr in adhesive tape.
Explore OYANG 18 Specs
TECH-23 Flagship Platform
Operates at 90–100 bags/min. Features 90-second motorized automatic mold changeovers alongside standard high-speed indirect tape dispensing technology.
Explore TECH 23 Specs
SMART 19 Advanced Converter
High-efficiency conversion cell offering bus-guided changeover, indirect taping, and automatic soft loop handle welding in an optimized footprint.
Explore SMART 19 SpecsFrequently Asked Questions (FAQ)
What is an indirect tape applicator on a non woven bag machine?
An indirect tape applicator is an automated mechatronic attachment on a box bag making machine that intermittently applies double-sided adhesive tape only onto designated bonding areas while lifting off and skipping the side gusset sections, avoiding adhesive waste.
How does indirect taping save $16,800 USD annually?
By skipping adhesive application across both side gussets (saving approximately 140 mm of tape per bag), a production line operating at 80 bags per minute over two daily shifts saves approximately 3.42 million meters of tape per year, cutting consumable expenses by over $16,800 USD at typical commercial adhesive tape prices.
Does skipping tape application affect the structural strength of a 3D box bag?
No, the side gusset area does not participate in structural sealing when the bag is opened. Applying adhesive tape there is completely redundant, meaning skipping the gusset maintains 100% of the bag’s seal strength and loading capacity.
Can the indirect taping system handle different bag dimensions?
Yes, the application interval, start point, and cutoff length of the tape are adjusted digitally through the central touchscreen HMI, allowing operators to reconfigure taping patterns in seconds without replacing physical cams or linkages.
What types of double-sided tape can be used with this applicator?
The system is compatible with standard industrial hot-melt, water-based acrylic, and solvent-based release liner double-sided tapes ranging from 12 mm to 25 mm in tape width.
Calculate Your Plant’s Consumable Savings
Discover how much your factory can save by transitioning to OYANG’s indirect tape converting technology. Contact our cost optimization engineers for a customized plant audit and consumable analysis.