GOTECH GT-6023 Standard Circular Specimen Cutter for Corrugated Board Flat Crush Test

Overview

The GOTECH GT-6023 is a precision-engineered circular specimen cutter designed exclusively for sample preparation in flat crush testing (FCT) of corrugated fiberboard—specifically single-wall and double-wall (i.e., non-triple-wall) configurations per ASTM D642 and ISO 3037 standards. It operates on a manual rotary die-cutting principle, utilizing hardened steel cutting dies to produce dimensionally consistent, burr-free circular specimens with a nominal diameter of 152 mm (6 inches), the standardized size required for edge crush test (ECT) and flat crush test fixtures in packaging materials laboratories. The device features a rigid cast-iron base, adjustable depth stop, and ergonomic lever mechanism to ensure reproducible downward force application—critical for minimizing inter-operator variability during sample preparation. Unlike general-purpose cutters, the GT-6023 integrates alignment guides and a fixed-diameter anvil system to eliminate lateral slippage and maintain concentricity between die and substrate, thereby preserving the structural integrity of the corrugated flute geometry during sampling.

Key Features

• Fixed-diameter cutting die (152 mm ± 0.2 mm) manufactured from heat-treated tool steel (HRC 58–62) for long-term dimensional stability and wear resistance
• Adjustable cutting depth control (0–12 mm range) to accommodate varying board calipers—from single-face to double-wall corrugated board (excluding triple-wall per specification)
• Integrated registration pins and alignment grooves to ensure repeatable positioning of sheet stock relative to the die centerline
• Stainless steel anvil surface with micro-textured finish to prevent specimen adhesion and facilitate clean ejection
• Compliance-ready design: No electronic components or software; fully compatible with GLP-compliant manual testing workflows and audit documentation requirements
• Compact footprint (320 × 240 × 410 mm) and benchtop configuration for integration into QC labs with space-constrained environments

Sample Compatibility & Compliance

The GT-6023 accepts corrugated board substrates up to 12 mm in thickness and 600 mm × 600 mm in planar dimensions. It is validated for use with kraft linerboard, test liner, fluting medium (A-, B-, C-, E-, and F-flute), and combinations thereof—including coated, uncoated, and recycled-content boards. Per ISO 3037:2022, specimen roundness deviation must not exceed ±0.3 mm; the GT-6023 achieves ≤±0.15 mm typical roundness tolerance under routine calibration. The cutter does not support triple-wall board due to excessive compressive resistance exceeding mechanical stroke limits and risk of die deformation. All mechanical tolerances conform to ISO 2768-mK general tolerancing standards for metal fabrication. Calibration verification is performed using certified gauge blocks and optical comparators traceable to NIM (China National Institute of Metrology).

Software & Data Management

The GT-6023 is a purely mechanical, non-electronic instrument with no embedded firmware, connectivity interfaces, or data output capability. As such, it requires no software installation, network configuration, or cybersecurity validation. Sample identification, batch tracking, and test record linkage are maintained externally via laboratory information management systems (LIMS) or paper-based logbooks in accordance with ISO/IEC 17025:2017 clause 7.5.2 (control of records). Its passive operation ensures full compatibility with FDA 21 CFR Part 11–compliant environments where electronic signatures and audit trails are managed at the downstream testing instrument level (e.g., universal testing machines used for subsequent flat crush measurement).

Applications

• Preparation of ASTM D642-compliant specimens for flat crush strength evaluation of shipping containers and transit packaging
• Routine QC sampling in corrugated converting plants prior to lamination, printing, or die-cutting operations
• Raw material qualification of incoming linerboard and fluting medium per TAPPI T 811 and ISO 536
• Interlaboratory comparison studies requiring identical specimen geometry across multiple accredited facilities
• Training and method validation in packaging engineering curricula where repeatability and procedural fidelity are pedagogically emphasized

FAQ

Does the GT-6023 support triple-wall corrugated board?
No. The GT-6023 is explicitly designed for single-wall and double-wall corrugated board only, as specified in its operational scope and mechanical stroke limitation.
What is the recommended maintenance schedule?
Die sharpening is advised every 5,000 cuts or biannually—whichever occurs first—using a certified tool grinding service with profile verification against original CAD specifications.
Is calibration certification provided with shipment?
Yes. Each unit ships with a factory-issued calibration report referencing NIM-traceable measurements of die diameter, anvil parallelism, and lever mechanical advantage ratio.
Can custom diameters be ordered?
Standard configuration is 152 mm only. Non-standard diameters require redesign of die/anvil assembly and are available under OEM contract with minimum order quantity (MOQ) of 10 units.
Is the GT-6023 compliant with EU Machinery Directive 2006/42/EC?
Yes. It carries CE marking under Annex IV, classified as a “low-risk mechanical device” with no moving parts beyond manual actuation and zero energy source dependency.