ZKDZ NLY-20H Bottle Cap Torque Tester

Overview

The ZKDZ NLY-20H Bottle Cap Torque Tester is a precision-engineered torsion testing instrument designed specifically for quantitative measurement of closure torque in packaging applications. It operates on the principle of controlled rotational force application combined with high-fidelity torque transduction, enabling accurate determination of both cap tightening (sealing) torque and cap removal (opening) torque. This dual-mode functionality supports critical quality control workflows across regulated manufacturing environments where mechanical integrity of closures directly impacts product shelf life, tamper evidence, leakage resistance, and consumer usability. The system employs a calibrated strain-gauge-based torque sensor coupled with a programmable stepper motor drive, delivering repeatable angular displacement and real-time torque acquisition under defined test profiles. Its architecture conforms to fundamental metrological requirements for static and dynamic torque measurement as defined in ISO 376 and ASTM E250.

Key Features

• Industrial-grade 7-inch full-color capacitive touchscreen with intuitive menu navigation and multi-language support (English default)
• Dual-test mode operation: independent selection of “tightening” (seal) and “opening” (removal) torque protocols
• Automatic peak torque capture with hold-and-display function, eliminating operator-dependent reading errors
• Modular torque sensor configuration: standard 20 N·m sensor; optional 5 N·m, 10 N·m, or 40 N·m sensors for extended range applications
• Multi-unit display capability: seamless switching between N·m, kg·cm, lbf·in, and N·cm — all traceably converted using SI-derived constants
• Integrated safety logic: hardware-based overload protection, auto-zero calibration prior to each test cycle, and real-time fault diagnostics with on-screen alerts
• Role-based access control: three-tier user permission system (Operator, Supervisor, Administrator) enforced via password authentication
• Built-in thermal mini-printer for immediate hard-copy output of test results including timestamp, sample ID, torque value, and unit

Sample Compatibility & Compliance

The NLY-20H accommodates cylindrical and tapered closures across a broad dimensional envelope — clamping diameters from 5 mm to 180 mm enable testing of vials, PET bottles, aluminum screw caps, flip-top dispensers, and laminated tube nozzles. Its mechanical design satisfies ergonomic and repeatability criteria specified in ASTM D2063 (Standard Test Method for Measuring Torque Required to Open or Close Rigid Containers) and ASTM D3474 (Standard Practice for Calibration of Torque-Measuring Instruments). Regulatory alignment extends to packaging validation frameworks referenced in USP <1207> (Packaging Integrity Evaluation), EU Annex 1 (Sterile Product Manufacturing), and China’s YY/T 0681 series. All firmware and data handling routines are structured to support GLP/GMP documentation requirements, including electronic signature readiness when paired with optional validated software.

Software & Data Management

While the embedded interface provides standalone operation, the optional ZKDZ TorqueSuite™ PC software enables advanced data governance. It supports bidirectional USB/RS232 communication, time-stamped result logging, batch-level statistical reporting (mean, SD, CV%, min/max), trend charting, and customizable PDF export. Audit trail functionality records user actions, parameter changes, and calibration events per FDA 21 CFR Part 11 principles. Raw torque-vs-angle curves can be exported in CSV format for third-party analysis. Software installation includes IQ/OQ documentation templates aligned with ISO/IEC 17025 laboratory accreditation expectations.

Applications

• Pharmaceutical primary packaging: verification of child-resistant and senior-friendly closure performance per ISO 8317 and ASTM D3474
• FDA-regulated food and beverage production: routine monitoring of capping consistency across high-speed rotary fillers
• Cosmetic and personal care manufacturing: validation of pump actuator torque and airless dispenser seal integrity
• Medical device packaging: assessment of peel strength correlation with applied sealing torque in Tyvek-lidded trays
• Contract packaging QA/QC labs: method transfer and cross-site comparability studies supported by standardized test protocols
• R&D formulation development: correlation of resin viscosity, thread geometry, and torque retention over accelerated aging cycles

FAQ

What standards does the NLY-20H comply with for pharmaceutical packaging validation?

It meets ASTM D2063, ASTM D3198, and GB/T 17876 — all widely accepted for closure torque assessment in sterile and non-sterile drug product packaging.
Can the instrument store test results internally without external software?

Yes — up to 199 test records are retained in non-volatile memory with full metadata (date/time, torque value, unit, operator ID if logged).
Is the torque sensor calibration traceable to national metrology institutes?

All factory-calibrated sensors include NIST-traceable certificates; field recalibration services are available through ZKDZ-accredited service centers.
Does the system support statistical process control (SPC) integration?

When used with TorqueSuite™ software, it exports X-bar/R chart inputs and supports automated control limit calculation per ANSI/ASQ B1–B3.
What maintenance is required for long-term accuracy?

Annual verification against certified torque standards is recommended; no consumables or routine lubrication are required due to brushless motor and solid-state sensing architecture.