GBPI GB-ZK – Pinhole Detection Bench (Aluminum Foil & Barrier Film)
- Standardized transmitted light pinhole detection bench for aluminum foil and barrier packaging inspection
- Full testing compliance with GB/T 3198, GB/T 22638.2, YBB 00152002, and pharmaceutical packaging standards
- Generous inspection observation window measuring 400 × 250 mm for full blister web evaluation
- Equipped with high-transmission optical diffuser plate delivering uniform, glare-free backlighting
- Includes precision graduated reading magnifier for accurate pinhole diameter quantification and defect sizing
- Sturdy low-profile laboratory benchtop chassis engineered for darkroom and low-ambient lighting environments
- Essential quality assurance instrument for pharmaceutical blister foil, retort laminates, and aseptic barrier webs
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The GBPI GB-ZK is a specialized laboratory pinhole detection bench engineered for the rapid visual detection, counting, and quantitative measurement of micro-pinholes, porosity defects, and light leakage points in aluminum foils, blister lidding materials, and multi-layer barrier films. Manufactured in strict conformity with national and international pharmaceutical packaging criteria—including GB/T 3198, GB/T 22638.2, and Chinese Pharmacopoeia standard YBB 00152002—this instrument delivers reliable optical defect qualification for high-barrier packaging integrity.
Microscopic pinholes formed during aluminum rolling, annealing, or pouch conversion severely compromise barrier performance, enabling atmospheric oxygen, moisture vapor, and volatile contaminants to penetrate sterile pharmaceutical blisters and aseptic food pouches. Operating as an optical transmitted light pinhole detection bench, the GB-ZK directs calibrated, uniform diffuse illumination upward through the specimen substrate within a controlled low-lux darkroom environment. Any perforation, fissure, or structural micro-void transmits luminous flux, presenting distinct pinpoint light spots against an opaque backdrop that can be readily enumerated and measured by visual inspection.
Uniform Backlight & Precision Defect Sizing
The testing bench integrates a generous 400 × 250 mm observation aperture fitted with a specialized optical diffusion panel that eliminates hot spots, shadows, and reflective glare. An accompanying precision graduated optical magnifier allows laboratory technicians to measure pinhole diameters down to micro-scale thresholds, ensuring compliance with strict pharmaceutical pinhole density tolerances and metallurgical specifications.
Pharmaceutical Quality Assurance & Converter Reliability
Widely utilized by medicinal foil converters, contract packaging organizations, and blister packaging lines, the GB-ZK verifies the physical barrier integrity of PTP aluminum foil, cold-formable aluminum-aluminum blister foils, and laminated barrier webs before thermoforming and heat sealing operations. Evaluating raw material rolls prior to production prevents batch contamination, costly shelf-life recalls, and seal integrity failures in commercial packaging.
Engineered for continuous industrial quality control, the compact benchtop architecture fits seamlessly on standard laboratory counters, darkroom workstations, or inline quality inspection booths. The solid steel framework ensures long-term dimensional stability, while the standardized fluorescent illumination system delivers steady luminous output across extensive testing shifts without thermal distortion of delicate foil samples.
GBPI GB-ZK Pinhole Detection Bench – Technical Specifications
| Technical Parameter | Specification Details |
|---|---|
| Test Principle | Transmitted Light Optical Diffusion Method (Pinhole & Defect Enumeration) |
| Applicable Standards | GB/T 3198-2010, GB/T 22638.2-2008, YBB 00152002, Pharmacopoeial Packaging Standards |
| Observation Window Area | 400 mm × 250 mm (Effective viewing aperture) |
| Illumination Light Source | Standard Fluorescent / LED Luminescent Source (220V, 32W) with Diffuse Filter Screen |
| Recommended Ambient Illumination | 20 Lux to 50 Lux (Controlled low-light darkroom environment) |
| Graduated Measurement Magnifier | Precision Reading Magnifier with Metric Micrometer Reticle (100x Scale) |
| Benchtop Instrument Dimensions | 700 mm (L) × 350 mm (W) × 75 mm (H) |
| Net Instrument Weight | Approximately 10.6 kg |
| Electrical Supply Requirements | AC 220V ± 10%, 50 Hz / 60 Hz Single Phase |
Key Performance Features of the GBPI GB-ZK
- Uniform Optical Diffusion: Fitted with an engineered high-transmission frosted diffusion screen that homogenizes luminous output, preventing hot-spot interference and reducing operator eye strain during extended inspection sessions.
- Standardized Pharmaceutical Compliance: Built to meet strict Pharmacopoeial specifications (YBB 00152002) and metallurgy standards (GB/T 3198) for medicinal packaging aluminum foil defect analysis.
- Large Observation Aperture: The 400 × 250 mm testing field accommodates representative full-width samples directly from slitting lines or unwinding reels without folding or creasing fragile foils.
- Precision Defect Sizing: Accompanied by a calibrated graduated magnifier with micrometer reticle to precisely quantify pinhole diameters and classify pinholes by size categories per regulatory thresholds.
- Ergonomic Low-Profile Architecture: Low 75 mm elevation facilitates comfortable seated inspection on standard laboratory workbenches or inside dedicated inspection hoods.
- Robust Laboratory Build: Heavy-gauge metal frame construction with durable scratch-resistant powder-coated exterior ensures longevity in demanding plant QC environments.
Standard Package & Accessories
| Item | Description | Quantity | Type |
|---|---|---|---|
| 1 | GB-ZK Pinhole Detection Bench Main Unit | 1 Set | Standard |
| 2 | Internal High-Uniformity Diffuse Illumination Source (Installed) | 1 Set | Standard |
| 3 | Calibrated Graduated Reading Magnifier with Micrometer Reticle | 1 Pc | Standard |
| 4 | Standard Power Cable & Protective Ground Wire | 1 Pc | Standard |
| 5 | User Operating Manual and Manufacturer Factory Inspection Certificate | 1 Set | Standard |
Primary Testing Applications
Pharmaceutical Blister Foil (PTP)
Inspection of hard and soft temper aluminum lidding foils (20 to 25 micron thickness) bonded with PVC, PVDC, or ACLAR blister webs for tablet and capsule packaging.
Cold-Formed Foil (Alu-Alu)
Verification of multi-layer OPA/Alu/PVC forming films to detect mechanical micro-cracks and stress fractures induced during deep-draw cavity blister forming.
Aseptic Food Packaging Laminates
Quality control of ultra-thin foil barrier layers (6 to 9 micron) utilized in liquid aseptic cartons, retort pouches, and vacuum-sealed coffee bags.
Industrial Foil & Insulation Films
Porosity screening for battery pouch outer packaging, thermal insulation foils, and electronic shielding films requiring zero pinhole permeation.