In-line appearance inspection and automatic rejection for high-speed production lines of sanitary napkins, baby diapers, pull-up pants, adult diapers, nonwoven fabric and soft-pack tissue. Powered by 2D/3D/2.5D/CIS imaging and our self-developed deep learning platform — inspection as prevention, data as asset.
Software, algorithms and imaging solutions are developed fully in-house — customizable, maintainable and traceable for real production conditions.
Combining mainstream image-processing theory with years of field experience: positioning, classification, surface defect detection, precision measurement, image stitching and 3D point-cloud analysis, verified in over a hundred projects.
From core, waist patches and elastic waistband to wetness indicator and surface contamination — covering sanitary napkins, liners, diapers, pull-ups, adult diapers, nonwoven and soft-pack tissue.
Drag-and-drop, no-code algorithm flow configuration; one-click layout switching by model. Supports IO, TCP, Modbus, FTP, serial and other protocols with mainstream PLCs.
High line speed, soft materials and tiny defects make manual inspection costly and unreliable.
At higher line speeds, manual sampling cannot inspect the full web; tiny contamination, insects and dark oil stains passing in milliseconds are easily missed; dimensional defects such as waist-patch offset are judged inconsistently.
Paper records and post-process sampling hide defect distribution and trends; customer complaints are hard to trace back to machine, shift or time; manual inspection costs rise while fatigue makes miss rates fluctuate.
More than replacing human eyes — every inspection becomes traceable, analyzable and optimizable production data.
High-speed Full-width Imaging
AI Multi-defect Judgement
Automatic Rejection
Data Closed-loop
The items below are taken from the functional scope of delivered projects.
Stains > 0.4mm², including dirt, insects, dark oil stains and foreign matter
Missing core, folded corner > 0.4cm², offset > 4mm
Missing, folded, opened or offset ±3mm; patch folded into the inner nonwoven
Missing, folded, skewed or offset > 8mm; front-back positioning ±3mm
Missing waistband, folded corner, offset or skew
Missing indicator, offset, length ±3mm
Missing print, folded corner, offset ±4mm; wing flipping, inward folding; release paper sizing and missing detection
Oil stains, black spots, insects, hair, impurities, foreign matter, white nits and fiber lumps — detected and labeled in line
Seal integrity, contamination, squareness, blank area, easy-open offset and coding defects for soft-pack tissue
| Inspection System | Main Inspection Items / Specs |
|---|---|
| Pull-up / Waistband Pants Inspection System | Full inspection of surface contamination, absorbent core, side/front waist patches, elastic waistband and wetness indicator. |
| Sanitary Napkin Inspection System | Full inspection of surface contamination, core, print pattern, wings, release paper and die-cut waste. |
| Adult Diaper Inspection System | Surface contamination, absorbent core, side ear patches and front waist patch inspection. |
| Absorbent Core Inspection System | Supports 200 m/min line speed with 0.3–0.5mm² precision, machine alarm and defect positioning. |
| Panty Liner / Underpad Inspection System | Surface contamination, absorbent core (separate criteria for liners and underpads) and backing paper inspection. |
| Nonwoven Fabric Inspection System | Up to 850 m/min, any web width (multi-camera), 0.3–0.5mm² precision with in-line labeling. |
| Soft-pack Tissue Appearance Inspection Machine | Five-station in-line inspection of sealing, contamination, squareness, blank area and coding — 120 packs/min, ≥99.5% accuracy. |
| Film Appearance Inspection System | Appearance defect inspection for film production equipment: holes, black spots, oil stains and insects. Compatible with 2,999 models, line speed ≥300 m/min. |
| Copper / Aluminum Foil Inspection System | Real-time CCD photography of copper and aluminum foil surfaces for defect detection and production reporting; optional inkjet marking and AI recognition. |
| Valve Bag Appearance Inspection System | Appearance inspection for valve bags across base fabric, printing and bottom-patch processes — holes, joints, double yarn, weft slippage, thin picks and printing defects. |
| High-speed Labeler (Accessory) | Works with the vision system: up to 150 m/min, 23 pcs/s labeling, Modbus RTU communication with real-time alerts. |
| Inkjet Coder (Accessory) | Thermal inkjet coding up to 150 m/min; compact, ready-to-use, self-cleaning and maintenance-free, Modbus RTU with multi-unit chaining. |
Inspection precision can be designed to customer requirements; final specs are subject to confirmation.
An intelligent vision inspection system for the full range of disposable hygiene products.
Systems organized by product line; non-standard customization is available based on floor space and line speed.
High-speed in-line appearance inspection and automatic rejection for baby diapers, pull-up pants, waistband pants and adult diapers, covering surface contamination, absorbent core, waist patches, elastic waistband and wetness indicator.
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In-line surface defect and structural integrity inspection for sanitary napkins, panty liners, maternity pads and sanitary pants, including print pattern, wings, release paper and die-cut waste.
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In-line defect, stain and hole inspection with coordinate logging for spunbond, spunlace, hot-rolled, chemically bonded, air-through and gauze nonwoven lines — up to 850 m/min, any web width (multi-camera).
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In-line inspection and automatic rejection for seal integrity, contamination, squareness, blank area and coding of soft-pack tissue — 120 packs/min with ≥99.5% accuracy.
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In-line appearance defect inspection for film production equipment, identifying and logging holes, black spots, oil stains and insects.
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CCD cameras photograph copper and aluminum foil surfaces in real time for defect detection and production reporting.
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Appearance inspection for valve bags covering base fabric, printing and bottom-patch processes — holes, joints, double yarn, weft slippage, thin picks and printing defects.
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High-speed labeler and inkjet coder that work with the vision system for in-line defect marking and traceability.
View Series →From the underlying algorithm engine and inspection flow orchestration to HMI, reporting and line communication — fully self-controlled across the chain.
No modification to the host machine program is required; the vision module can be retrofitted and rejects defects in real time.
A “global model + local fine-tuning + lightweight deployment” approach builds a leading industrial deep-learning stack.
Production data is recorded automatically for quality traceability, with exception reports and trend analysis.
A 24-hour technical consulting and fault-response hotline keeps production running.
The following images are field records from delivered projects.
※ Disclosure of case images and customer information is subject to business confirmation.
Serving leading hygiene manufacturers, headquartered in Xiamen with branch offices across China.
Selected clients in no particular order
Dedicated project ownership plus regional on-site service teams for fast local response.
Also provided: system documentation and software (wiring diagram, operation & maintenance manuals) and production-management consulting for new technologies.
Leave your product type, line speed and main defect types — we will propose a tailored inspection solution and configuration.
