GBPI GBD-B – Digital Pendulum Impact Tester (Film & Sheet Puncture Energy)
- High-precision digital pendulum impact tester for dynamic pendulum puncture resistance of polymer films
- Full testing compliance with ASTM D3420, GB/T 8809, and flexible barrier packaging standards
- Maximum rated impact capacity of 3 Joules with ultra-fine resolution of 0.02 Joules
- High-resolution optical angular encoder measuring precise pendulum deceleration and residual swing angle
- Dual pneumatic specimen clamping rings ensuring uniform circumferential tension without film slip
- Integrated touch-screen interface displaying real-time impact energy, average values, and statistical deviations
- Essential quality inspection apparatus for plastic films, composite pouches, medical blister packs, and metallic foils
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The GBPI GBD-B is a specialized, electronically instrumented digital pendulum impact tester engineered to determine the pendulum impact resistance, puncture energy, and dynamic rupture toughness of plastic films, composite barrier laminates, sheet materials, and medical blister webs. Manufactured in strict compliance with international packaging criteria including ASTM D3420 (standard test method for dynamic ball burst impact resistance of plastic film and thin sheeting) and GB/T 8809, this instrument delivers reliable mechanical puncture evaluation for flexible web materials.
Flexible packages undergo rapid multi-axial impact stresses when subjected to dropping, tumbling, or impact with sharp packaged contents during automated packaging line filling and distribution logistics. Inadequate resistance against concentrated dynamic impact leads to puncture holes and package failure. Operating as a state-of-the-art digital pendulum impact tester, the GBD-B utilizes a hemispherical-tipped pendulum that is released from a fixed 90-degree initial elevation. As the pendulum swings through its arc, the hemispherical impactor punctures through the center of the firmly clamped film specimen, and the instrument precisely measures the mechanical energy absorbed during specimen penetration.
Optical Angular Encoding & High Energy Resolution
The system features a non-contact optical angular encoder coupled to the pendulum pivot axle, accurately resolving pendulum deflection angles with an energy resolution of 0.02 Joules. An advanced microcomputer automatically compensates for aerodynamic windage and bearing frictional resistance, calculating the net dynamic rupture energy consumed in fracturing the test sample.
Pneumatic Clamping & Operator Safety
To eliminate specimen slippage and edge pinching variations, the GBD-B incorporates pneumatic clamping rings that secure specimens firmly under regulated pressure. An electronic safety latch and protective transparent shield safeguard operators during pendulum release, while the digital touch screen displays test results, standard deviation, and graphic comparative statistics.
Trusted across flexible packaging plants, resin R&D facilities, and quality inspection bureaus, the GBD-B provides reproducible puncture energy metrics essential for optimizing film thickness and polymer blend durability.
GBPI GBD-B Digital Pendulum Impact Tester – Technical Specifications
| Technical Parameter | Specification Details |
|---|---|
| Test Principle | Dynamic Pendulum Ball Burst Energy Loss Method (ASTM D3420) |
| Applicable Standards | ASTM D3420, GB/T 8809-2015, ISO 7765-2 Equivalent Methodologies |
| Maximum Impact Energy | 3.0 Joules (Standard) / Optional 1.0 J or 5.0 J Modular Capacity |
| Energy Resolution & Precision | 0.02 Joules (High-precision non-contact optical encoder measurement) |
| Initial Pendulum Release Angle | 90° (Fixed horizontal release position) |
| Pendulum Swing Radius | R280 mm (Radius of gyration to impact center) |
| Impactor Head Geometry | Hemispherical Ball Head Φ25.4 mm (ASTM D3420) / Φ12.7 mm |
| Specimen Clamping System | Pneumatic Dual-Clamp Fixture with Interchangeable Aperture Plates |
| Clamping Aperture Diameters | Standard Φ89 mm (ASTM D3420) / Φ60 mm / Φ50 mm |
| Specimen Dimensions | 100 mm × 100 mm (Square) or Φ100 mm (Circular Disc) |
| Instrument Dimensions | 800 mm (L) × 490 mm (W) × 660 mm (H) |
| Instrument Net Weight | Approximately 48 kg |
| Power Supply | AC 220V ± 10%, 50 Hz / 60 Hz Single Phase |
Key Performance Features of the GBPI GBD-B
- Digital Angular Encoder Technology: Employs a zero-backlash optical encoder to measure residual pendulum swing angles with 0.02 J sensitivity, eliminating parallax reading errors common in analog dial gauges.
- Automatic Friction & Windage Compensation: Microprocessor firmware executes automated zero-loss calibration cycles to deduct bearing friction and air resistance from raw puncture readings.
- Standardized ASTM D3420 Geometry: Features precision hemispherical impact heads and standardized circular specimen apertures (89 mm) for strict compliance with global packaging specifications.
- Pneumatic Sample Grip: Fast, repeatable pneumatic clamping eliminates human clamping inconsistency and avoids micro-wrinkling across flexible films and barrier foil laminates.
- Safety Interlock Mechanism: Integrated electromagnetic brake and protective mechanical latch prevent accidental pendulum release during sample mounting and positioning.
- Integrated Statistical Processing: Built-in computer automatically tabulates multi-specimen test runs, generating mean energy, variance, standard deviation, and graphic trend lines on screen.
Standard Package & Accessories
| Item | Description | Quantity | Type |
|---|---|---|---|
| 1 | GBD-B Digital Pendulum Impact Tester Mainframe with Integrated Touch Display | 1 Set | Standard |
| 2 | Standard 3 Joule Pendulum Arm Assembly with Balanced Counterweight | 1 Set | Standard |
| 3 | ASTM D3420 Hemispherical Impactor Ball Head (Φ25.4 mm) | 1 Pc | Standard |
| 4 | Pneumatic Specimen Clamping Fixture with Φ89 mm Aperture Plate | 1 Set | Standard |
| 5 | Interchangeable Aperture Plates (Φ60 mm and Φ50 mm) | 2 Pcs | Optional |
| 6 | Pneumatic Foot Pedal Switch & Compressed Air Connector Tubing | 1 Set | Standard |
| 7 | Factory Calibration Verification Certificate and Instruction Manual | 1 Set | Standard |
Primary Testing Applications
Packaging Films & Coextruded Webs
Evaluation of dynamic puncture resistance in polyethylene (PE), polypropylene (BOPP, CPP), polyester (BOPET), and polyamide (BOPA) films.
Pharmaceutical Blister & Pouch Materials
Puncture strength screening for push-through lidding foils, cold-formed blister laminates, and sterile medical device barrier pouches.
Retort & Heavy-Duty Barrier Pouches
Resistance verification against puncture from rigid food items (bones, dry pasta, coffee beans) during vacuum packing and hot retort processing.
Geotextiles & Synthetic Membrane Sheets
Dynamic impact toughness quantification for agricultural film covers, pond liners, and waterproofing construction membranes.