KMDA-7921 Powers Rubber Glove Pinhole Leak Detection and Sorting Systems
A micron-scale pinhole, invisible to the naked eye, can compromise the protective integrity of products across four critical industries—medical, food, chemical, and pharmaceutical—resulting in viral penetration, chemical leakage, and bacterial contamination, with potentially devastating consequences. Traditional manual visual inspection and water immersion testing suffer from high defect escape rates and low inspection efficiency, making it increasingly difficult to meet the stringent AQL standards and 100% inline inspection requirements demanded by the European and North American markets.
Powered by native PCIe high-speed expansion, a high-performance computing architecture, and 24/7 reliable operation, the JHCTECH KMDA-7921 accurately captures micro-pressure decay data as small as 0.001 psi, serving as the robust control core for pressure decay leak testing equipment. It enables manufacturers to achieve high-precision, 100% inspection and automated sorting across production lines.
The following case study showcases a successful deployment by a Malaysian equipment manufacturer, highlighting industry challenges, the solution architecture, and the measurable results achieved.
Background: ⚠️ The Safety Challenge of Pinhole Defects in Medical Gloves
Under the bright lights of an operating room, a pair of medical gloves may appear flawless, yet still conceal micron-sized pinholes invisible to the naked eye. This seemingly insignificant defect can allow viruses and bloodborne pathogens to pass through in both directions, turning a protective barrier into a potential pathway for infection.
This is not merely a hypothetical risk. Clinical studies indicate that up to 90% of glove perforations may go undetected during routine use. To enhance patient and healthcare worker safety, the European EN 455 standard sets the Acceptable Quality Limit (AQL) for medical glove pinholes at 1.5. Any batch exceeding this limit fails to meet the required quality standard and may be rejected.
More challenging is that pinhole defects persist throughout the entire glove production process:
🔹 Raw material and molding defects: Air bubbles, impurities, and uneven thickness during latex impregnation create inherent micropores; stretching and friction during demolding, cutting, and drying easily generate tiny pinholes that are difficult to see with the naked eye.
🔹 Storage and post-processing-related damage: Low-temperature storage, UV sterilization, and ethylene oxide sterilization can cause microcracks in nitrile materials; friction during finished product transportation and packaging further enlarges micropores.
🔹 Traditional testing methods are completely ineffective: Manual visual inspection has a high miss rate of 3%~5%, is prone to visual fatigue during long hours, and suffers from poor consistency; the immersion and bubbling method takes 3~5 minutes per glove⏱️, and water residue can easily cause secondary contamination, making it unsuitable for sterile gloves. Offline sampling inspection only covers a small number of samples, posing a risk of batch quality control failure.
These shortcomings completely fail to meet the "100% inspection" requirement for a single production line producing hundreds of thousands of gloves per day.
Customer Requirement: Pressure Decay Technology for Reliable Pinhole Detection
Natural rubber and nitrile protective gloves are widely used in medical, food processing, and chemical protection fields. Pinholes in these gloves can directly cause protective failure, posing a serious safety hazard. This leak testing and sorting equipment is specifically developed for detecting pinhole defects in gloves. Equipped with a high-precision digital pressure sensor with an accuracy of 0.001 psi, it performs a full inspection of glove sealing using a pressure decay method—inflating the inside of the glove to create a positive pressure environment, monitoring the pressure decay value in real time, automatically distinguishing between qualified and defective products, and completing automatic sorting, achieving automated inspection across the entire production line.
This solution was provided to a Malaysian equipment provider. For this automated inspection equipment, the client had four core requirements for the control system:
🖥️ The control system needs to be equipped with a high-performance industrial PC, with a reserved standard PCI expansion channel to support external high-precision pressure acquisition cards;
⏱️ The equipment needs to operate stably and continuously 24/7, adapting to factory two-shift or three-shift mass production conditions;
📡 Real-time acquisition of minute pressure change data, with fast system response and no lag or data loss issues;
🔗 Strong hardware compatibility, compatible with existing customer-provided host computer monitoring software, reducing secondary development costs.
JHCTECH Solution: KMDA-7921 – The Intelligent Core of High-Precision Leak Detection
To address these stringent requirements, the KMDA-7921 was selected as the "intelligent brain" of the entire testing system 🧩, its technological advantages precisely targeting industry pain points:
⚡ It uses a PCIe bus interface to connect to a high-precision pressure sensor expansion acquisition card, stably acquiring minute pressure decay data at the 0.001 psi level;
🧠 It is equipped with a high-performance industrial-grade computing chip (12th generation Intel Core processor), enabling multi-task parallel processing to simultaneously complete pressure acquisition, logic judgment, sorting mechanism control, and data storage;
🛡️ It features a stable industrial-grade hardware architecture, a fanless design, wide temperature range, and anti-interference capabilities, supporting DC 9-36V wide voltage power supply to meet the 24/7 uninterrupted operation requirements of production lines;
🔌 It offers abundant expansion interfaces (2×LAN, 4×USB3.2, 4×COM, 16-bit isolated DIO, etc.), allowing connection to photoelectric sensors, sorting cylinders, displays, and MES data upload terminals, providing a one-stop solution for equipment control needs.
Solution Outcomes: More Than Replacing Manual Labor—Redefining Manufacturing
📈 Significantly Improved Detection Accuracy: Leveraging the stable data transmission performance of the KMDA-7921, pressure sensor data is latency-free and distortion-free, achieving a near 100% detection rate for micro-pinhole defects in gloves, completely eliminating the problems of missed detections and misjudgments during manual visual inspection.
⏫ Improved Overall Production Line Efficiency: Fully automated inspection and sorting replaces manual quality inspection, significantly reducing labor costs. Daily inspection capacity per unit increases by more than three times, meeting the production needs of customers with large-volume glove export orders.
💰 Reduced Equipment Maintenance Costs: KMDA series products feature long lifespan and low failure rate, significantly reducing annual equipment downtime for maintenance and ensuring continuous mass production.
📁 Digital Production Traceability: The motherboard stably supports long-term data storage, ensuring complete retention of pressure curves and defect records for each glove, meeting the product traceability and quality inspection standards of overseas customers.
With its native PCIe high-speed expansion channel, high-performance computing platform, and industrial-grade reliable design, the KMDA-7921 is perfectly compatible with high-precision leak detection equipment for rubber/nitrile gloves. It is an ideal industrial control hardware solution for automated quality inspection production lines of labor protection and medical gloves, earning a reputation for quality in the global market.
Learn more about KMDA-7921 series