Labthink C631H Thermal Shrinkage Tester for POF and Plastic Films
| Brand | Labthink |
|---|---|
| Origin | Shandong, China |
| Manufacturer Type | Direct Manufacturer |
| Regional Category | Domestic (China) |
| Model | C631H |
| Pricing | Upon Request |
Overview
The Labthink C631H Thermal Shrinkage Tester is a precision-engineered instrument designed to quantify the thermomechanical behavior of heat-shrinkable polymer films—particularly polyolefin (POF), PVC, PETG, and other thermoplastic packaging materials—under controlled thermal conditions. It operates on the principle of simultaneous dual-parameter measurement: real-time acquisition of both mechanical force (thermal shrink force and cold shrink force) and dimensional change (linear thermal shrinkage percentage), all synchronized with temperature ramping and cooling profiles. The system conforms strictly to ISO 14616:1997, GB/T 34848–2017 (a standard co-drafted by Labthink), and DIN 53369:1976, ensuring metrological traceability and regulatory acceptability in global packaging R&D, QC, and compliance laboratories. Its architecture integrates displacement transduction, high-fidelity load cell sensing, and programmable thermal control within a single compact enclosure—eliminating inter-device synchronization errors common in modular setups.
Key Features
- Non-contact laser-based displacement measurement ensures long-term stability and eliminates mechanical hysteresis associated with contact probes.
- Imported high-accuracy load cells (standard 5 N; optional 10 N or 30 N ranges) deliver force resolution down to 0.001 N and accuracy of ±0.5% of reading (10–100% FS) and ±0.05% FS (0–10% FS), meeting Class 0.5 force metrology requirements.
- Dual-station test configuration enables parallel evaluation of two identical specimens under identical thermal protocols—enhancing statistical robustness and throughput efficiency.
- Programmable heating/cooling profile with ±0.2 °C temperature stability and ±0.5 °C absolute accuracy (single-point calibrated), covering 25 °C to 210 °C—sufficient for low-melt POF and high-temperature PETG films.
- Three-speed specimen insertion mechanism (fastest: ≤2 s), minimizing thermal pre-conditioning disturbance prior to test initiation.
- Integrated Windows-based control interface with embedded display, keyboard, and mouse—no external PC required. Real-time plotting of force vs. time, shrinkage % vs. time, and temperature vs. time is rendered natively.
- Onboard USB 2.0 and Ethernet ports support data export, remote diagnostics, and integration with LIMS or MES environments.
Sample Compatibility & Compliance
The C631H accommodates standard specimens measuring 110 mm × 15 mm (per GB/T 34848 and ISO 14616), with displacement measurement range spanning 0.1–95 mm (±0.1 mm accuracy) and shrinkage quantification from 0.1% to 95%. It supports routine testing of mono- and multilayer coextruded POF, crosslinked polyethylene (PEX), and oriented polypropylene (OPP) films used in sleeve, label, and tray overwrap applications. All hardware and firmware comply with IEC 61000-4 electromagnetic compatibility standards. Data integrity safeguards—including Labthink’s proprietary DataShield™ (optional)—enable audit-ready operation under GLP, GMP, and FDA 21 CFR Part 11 environments, with full electronic signature support, user access tiers, and immutable audit trails for test parameters, raw data, and calibration events.
Software & Data Management
The embedded software provides full lifecycle test management: method definition (temperature ramp rate, dwell time, cooling rate), automated pass/fail evaluation against user-defined limits, and customizable report generation (PDF, CSV, XLSX). Historical data retrieval includes metadata filtering (operator ID, batch number, material grade, test date). Calibration status is actively monitored; sensor drift triggers intelligent alerting before out-of-tolerance conditions affect results. DataShield™ integration allows centralized repository synchronization, role-based permissions, and API-driven interoperability with enterprise quality systems—ensuring alignment with ISO/IEC 17025 documentation requirements.
Applications
- Quantification of thermal shrink force (hot and cold) for seal integrity prediction in shrink-sleeve labeling.
- Evaluation of post-shrink dimensional stability for pharmaceutical blister lidding films.
- Comparative analysis of shrink onset temperature and peak shrink force across resin formulations and processing histories.
- Validation of thermal aging effects on shrink performance after accelerated shelf-life testing.
- Supporting ASTM F1921 (shrink tension) and ASTM D2732 (free shrink) correlation studies via custom protocol scripting.
FAQ
What standards does the C631H fully comply with?
ISO 14616:1997, GB/T 34848–2017, and DIN 53369:1976 are natively supported with pre-configured test templates and reporting formats.
Can the instrument measure both shrink force and shrinkage simultaneously?
Yes—force and displacement are acquired synchronously at 10 Hz sampling rate, enabling direct calculation of shrinkage percentage and dynamic force evolution throughout the entire thermal cycle.
Is external computing hardware required?
No—the system includes an integrated industrial-grade Windows PC module with touchscreen-capable display, eliminating dependency on external computers and reducing validation scope.
How is data security maintained during long-term deployment?
Raw test data resides exclusively on the instrument’s internal SSD; no automatic network transmission occurs without explicit user action. Optional DataShield™ enforces encryption-at-rest, role-based access control, and tamper-evident audit logs.
What maintenance intervals are recommended for force sensor calibration?
Annual calibration is advised; the system performs self-diagnostic checks before each test and issues alerts if sensor output deviates beyond ±0.2% FS baseline.
