Labthink BST-02B Intelligent Bursting Strength Tester for Food Packaging Corrugated Boxes and Paperboard
| Brand | Labthink |
|---|---|
| Model | BST-02B Intelligent |
| Origin | Shandong, China |
| Manufacturer | Labthink Co., Ltd. |
| Measuring Range | 250–5600 kPa |
| Accuracy | ≤0.5% FS |
| Resolution | 0.1 kPa (low range) / 1 kPa (high range) |
| Hydraulic Oil Flow Rate | 170 ± 15 mL/min (methyl silicone oil) |
| Diaphragm Resistance | 170–220 kPa (10 mm dome height) / 250–250 kPa (18 mm dome height) |
| Clamp Pressure | >690 kPa (adjustable) |
| Clamp Ring Inner Diameter | Φ31.5 ± 0.05 mm (upper & lower) |
| Air Supply Requirement | 0.02–0.3 m³/min @ 0.6–0.7 MPa |
| Dimensions (W×D×H) | 530 × 350 × 600 mm |
| Weight | 85 kg |
| Power | AC 220 V, 50 Hz |
| Compliance | GB/T 1539, GB/T 6545, ISO 2759 |
Overview
The Labthink BST-02B Intelligent Bursting Strength Tester is a precision-engineered instrument designed for the quantitative evaluation of bursting resistance in corrugated fiberboard, solid fiberboard, paperboard, and laminated packaging materials used in food, pharmaceutical, and consumer goods industries. It operates on the Mullen-type principle—applying hydraulic pressure via an elastomeric diaphragm to a clamped specimen until rupture occurs—thereby measuring the maximum pressure (in kPa or alternative units) the material can withstand before failure. This method directly correlates with real-world performance under stacking, handling, and transit stresses, making it indispensable for quality assurance in packaging R&D, incoming inspection, and production line validation.
Key Features
- Microprocessor-controlled closed-loop hydraulics with real-time force feedback and automatic peak-hold functionality for repeatable rupture detection.
- Integrated 5-inch LCD display with intuitive Chinese interface (English firmware optional), supporting dual-language operation without external software dependency.
- Multi-unit conversion capability: seamless switching between kPa, kgf/cm², and lbf/in²—calibrated per NIST-traceable reference standards.
- Pneumatic sample clamping system ensures uniform radial load distribution and eliminates edge slippage; clamp pressure independently adjustable up to >690 kPa.
- Onboard thermal printer outputs full test reports including timestamp, test ID, individual burst values, max/min/mean, coefficient of variation (CV), and calculated bursting index (kPa·m²/g).
- Non-volatile memory retains test data during power interruption; all stored records maintain time-stamped audit trails compliant with GLP documentation requirements.
- RS232 serial interface enables bidirectional communication with Labthink’s optional BurstTest Pro software for automated report generation, statistical process control (SPC), and long-term trend analysis.
- Diaphragm calibration verification function supports routine in-house verification per ISO 2759 Annex B, minimizing reliance on third-party recalibration.
Sample Compatibility & Compliance
The BST-02B accommodates standard circular specimens (Φ31.5 ± 0.05 mm) cut from single- or multi-wall corrugated board, folding cartons, linerboard, kraft paper, and coated paperboard. Its rigid mechanical architecture ensures minimal frame deflection (<0.02 mm under full load), preserving measurement integrity across the entire 250–5600 kPa range. The instrument fully conforms to international test standards including ISO 2759 (Board—Determination of bursting strength), GB/T 6545 (Corrugated fiberboard—Determination of bursting strength), and GB/T 1539 (Paper and paperboard—Determination of bursting strength). All internal transducers are factory-calibrated against certified pressure standards traceable to CNAS-accredited laboratories, satisfying metrological requirements for ISO/IEC 17025 accredited testing facilities.
Software & Data Management
When paired with BurstTest Pro (optional Windows-based application), the BST-02B supports advanced data governance features aligned with FDA 21 CFR Part 11 compliance: electronic signatures, role-based user access control, immutable audit logs, and automated backup to network drives or cloud storage. Test sequences can be preconfigured with pass/fail limits, and SPC charts (X̄-R, Cpk, Ppk) are auto-generated for continuous improvement initiatives. Raw force-time curves are exportable in CSV and XML formats for integration into LIMS or enterprise QA systems. All firmware updates are delivered via signed digital packages to prevent unauthorized modification.
Applications
- Validation of corrugated box design integrity prior to mass production.
- Comparative assessment of recycled vs. virgin fiberboard burst performance.
- Monitoring consistency of papermaking process parameters (e.g., beating degree, filler content, sizing agents).
- Supplier qualification testing per contractual specifications (e.g., ASTM D7269, TAPPI T810).
- Root cause analysis of field failures linked to insufficient burst resistance.
- Supporting sustainability claims by quantifying mechanical robustness of eco-materials (e.g., molded fiber trays, bamboo-based boards).
FAQ
What type of hydraulic fluid is required?
Only methyl silicone oil meeting ISO VG 10 specification—non-corrosive, non-volatile, and free of sediment—is permitted. Mineral oils or glycerin-based fluids invalidate calibration and void warranty.
Is an air compressor included with the instrument?
No. Users must supply a clean, dry, oil-free compressed air source delivering 0.02–0.3 m³/min at 0.6–0.7 MPa. A refrigerated dryer and coalescing filter are strongly recommended.
Can the BST-02B test wet-strength papers?
Yes—provided specimens are conditioned per ISO 187 (23°C ± 1°C, 50% RH ± 2%) prior to testing. For wet burst evaluation, optional humidity-controlled chamber integration is available.
How often should the diaphragm be replaced?
Under normal use (≤10 tests/day), replacement is recommended every 12 months or after 5,000 cycles—whichever occurs first—to maintain specified dome-height resistance tolerances.
Does the instrument support GLP-compliant electronic record keeping?
Yes—when operated with BurstTest Pro and configured with enabled audit trail, electronic signature, and secure user authentication, it meets core GLP and 21 CFR Part 11 data integrity criteria.
