GBPI GBH-1s Single-Column Electronic Tensile Testing Machine for Flexible Packaging Materials

Overview

The GBPI GBH-1s is a single-column, microprocessor-controlled electronic tensile testing machine engineered for high-precision mechanical characterization of flexible packaging materials. It operates on the principle of controlled uniaxial force application—measuring load vs. displacement response in real time—to determine tensile strength, elongation at break, yield point, peel strength, seal integrity, tear resistance, puncture force, and compressive modulus. Designed specifically for quality assurance laboratories in food, pharmaceutical, and packaging manufacturing facilities, the GBH-1s complies with over 40 internationally recognized test standards—including ASTM D882 (tensile properties of thin plastic sheeting), ASTM F88 (seal strength of flexible barrier materials), ISO 37 (rubber vulcanized or thermoplastic—determination of tensile stress-strain properties), and numerous Chinese national standards (GB/T) governing film, foil, laminates, and pouch performance. Its rigid dual-column tabletop architecture ensures minimal deflection under load, while the precision-ground ball screw drive system guarantees smooth, repeatable crosshead motion across the full 750 mm travel range.

Key Features

• Class 0.5 force measurement accuracy (±0.5% of reading) validated per ASTM E4 and JJG 139 calibration protocols
• High-speed data acquisition at 100 Hz sampling rate, capturing transient mechanical events such as seal burst or film necking
• Multi-function test capability: tensile, peel (90°/180°), heat seal strength, tear (Elmendorf, trouser, tongue), puncture, compression, bending, and shear—all programmable within one platform
• Dual configuration options: built-in control unit (space-saving, integrated design) or external controller (enabling standalone operation and future hardware upgrades)
• Imported AC servo motor and digital closed-loop position control eliminate drift and ensure consistent speed fidelity across the full 0–500 mm/min range
• Modular sensor architecture supporting up to four independent load cell channels (e.g., simultaneous force and displacement transduction)
• Comprehensive safety suite: mechanical limit switches, overload cutoff, emergency stop button, and software-based soft limits
• Standard 30 mm jaw width with optional 50 mm configuration; pneumatic clamping available as accessory for rapid specimen loading and uniform stress distribution
• Real-time curve overlay, automatic parameter extraction (e.g., modulus, breaking energy), and statistical comparison across batches or material lots

Sample Compatibility & Compliance

The GBH-1s accommodates a broad spectrum of low-stiffness, high-ductility substrates common in flexible packaging systems: biaxially oriented polypropylene (BOPP), cast polypropylene (CPP), polyester (PET), polyethylene (PE), aluminum foil laminates, metallized films, paperboard composites, nonwovens, and medical-grade sterile barrier materials. Its 1400% elongation capacity enables reliable evaluation of highly extensible elastomeric films and hydrogel-coated pouches. All test methods align with regulatory expectations for GMP-compliant environments: raw data files include timestamped metadata, operator ID, environmental conditions (if linked to external sensors), and audit-trail logs meeting FDA 21 CFR Part 11 requirements when used with validated software. Calibration certificates traceable to NIM (National Institute of Metrology, China) or ISO/IEC 17025-accredited labs are available upon request.

Software & Data Management

The GBH-1s runs on GBPI’s proprietary Windows-based testing software, compatible with Windows 7 (32-bit) and later. The interface supports multilingual UI (English default), customizable test templates, and fully scriptable test sequences. Raw force-displacement data are stored in open CSV and XML formats, enabling direct import into Excel, MATLAB, or LIMS platforms. Advanced reporting tools allow users to define pass/fail criteria against specification limits, generate comparative graphs (e.g., seal strength vs. dwell time), and export PDF reports with embedded digital signatures. The software architecture permits user-defined parameter fields (e.g., batch number, operator initials, ambient RH), ensuring full traceability for internal audits or third-party inspections. Optional integration with enterprise MES or ERP systems is supported via TCP/IP or RS232 communication protocols.

Applications

• Quality control of thermoformed trays, stand-up pouches, and vacuum-sealed food packaging
• Evaluation of hot-melt adhesive bond strength in laminated snack bags
• Validation of peel initiation force for child-resistant blister packaging (per ASTM D3330)
• Tensile property mapping of biodegradable films (PLA, PHA) under accelerated aging conditions
• Heat seal optimization studies correlating temperature, pressure, and dwell time to seal failure mode
• Research on creep behavior of flexible barrier coatings under sustained load (ISO 11339)
• Teaching laboratory use for polymer mechanics courses requiring hands-on stress-strain analysis
• Third-party certification testing for YBB pharmaceutical packaging standards (e.g., YBB00112003 for aluminum-plastic composite films)

FAQ

What standards does the GBH-1s support out-of-the-box?
The instrument includes preloaded test methods for all referenced GB/T, ASTM, ISO, JIS, and YBB standards listed in its technical documentation—no custom scripting required.
Can the GBH-1s be used for dynamic fatigue testing?
No—it is designed for quasi-static mechanical testing only. Cyclic loading beyond 1 Hz is not supported due to actuator and control architecture limitations.
Is GLP-compliant data archiving possible?
Yes, when operated with the optional validated software package and configured with networked storage, the system maintains full ALCOA+ (Attributable, Legible, Contemporaneous, Original, Accurate, Complete, Consistent, Enduring, Available) data integrity.
What maintenance intervals are recommended?
Ball screw lubrication every 6 months; annual recalibration of load cell and displacement encoder by an accredited service provider is advised for regulated environments.
Does the system support ASTM D1938 tear propagation testing?
Yes—the standard trouser tear fixture is included, and the software calculates tear resistance per ASTM D1938 using peak force and specimen geometry inputs.