SCT-01 Short Span Compression Tester

Explore the functions, benefits, and testing standards of the short span compression tester for paper and board. Learn how SCT test methods like ISO 9895 and TAPPI T 826 ensure quality and precision in packaging.

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Introduction

The SCT test (short span compression test) method is specifically designed to evaluate the compressive strength over a minimal span—typically 0.7 mm—offering higher accuracy compared to traditional ring crush or edge crush tests. This method is ideal for testing materials with grammage between 100 g/m² and 400 g/m².

In the SCT-01, a 15 mm wide specimen is clamped between two precision-aligned jaws. As the jaws compress the sample, the instrument captures the maximum force before failure. The resulting value reflects the compressive strength in Newtons or other units such as KN/m or N.m/g, ensuring versatility in data presentation.

This test is highly sensitive to fiber bonding and material uniformity, making it a valuable indicator of paperboard quality—critical for packaging manufacturers aiming for ISO or TAPPI compliance.

Testing Standards

Accurate SCT testing is governed by well-established international standards. The short span compression tester must meet these requirements to ensure credible and comparable results.

ISO 9895

This international standard specifies the method for determining the compressive strength of paper and board using the SCT. It defines the apparatus setup, sample dimensions, and test speed, ensuring consistency across laboratories worldwide.

TAPPI T 826

This North American standard outlines procedures for short-span compressive strength measurement. It is widely used in containerboard and corrugated packaging industries. The tester must comply with this standard to satisfy industry-specific regulatory or contractual obligations.

Other relevant standards include:

DIN 54518
BS 7325
GB/T 2679.10
QB/T 2386

Cell Instruments’ SCT-01 supports all these standards, making it adaptable to global testing requirements.

Key Features

The SCT-01 model from Cell Instruments is designed to provide repeatable and operator-independent results. Below are the key features that set it apart:

High-Precision Clamping Mechanism: Two jaws with a 30 mm contact length and a controlled clamping force of 2300 ± 500 N ensure secure sample placement.
Accurate Test Range: Measures forces from 1–500 N, suitable for a wide range of paperboard types.
Customizable Test Speed: 3 ± 0.1 mm/min to align with standard test conditions.
Compact & Efficient: Built-in printer and optional RS-232 interface enable direct result reporting and software connectivity.
Safety First: Equipped with emergency stop and overload protection systems.

Applications Industries

The short span compression tester is widely used in:

Packaging & Carton Manufacturing: Ensuring consistent board strength and preventing box collapse.
Paper Mill Quality Control: Evaluating pulp blends and fiber properties.
R&D Facilities: Comparing materials and optimizing formulations.
Regulatory Testing: Meeting the quality assurance demands of ISO and TAPPI-compliant industries.

Whether you're manufacturing food cartons, pharmaceutical packaging, or industrial containers, SCT testing provides the quantitative data needed for compliance and performance assurance.

Main Parameter

Test Range	1~500N(Or as required)
Compression Distance	0.3~2mm
Clamping Length	30±0.5mm
Test Speed	3±0.1mm/min
Resolution	0.01N
Sample Size	1575mm WL
Gas Pressure	0.4~0.7 MPa
Gas Port Size	Ф6 mm
Power	AC 110~220V 50/60Hz

Why Choose Cell Instruments?

With years of experience in paper and packaging materials testing, Cell Instruments Co., Ltd. delivers innovative solutions tailored to the evolving needs of modern manufacturers. The SCT-01 combines mechanical precision with intuitive operation, supporting the industry’s push toward automation and high-efficiency quality control.

In addition to standard configurations, we specialize in customized testing solutions and automation upgrades, enabling seamless integration into existing workflows.

A short span compression tester is indispensable for assessing the structural strength of paper and board materials, especially in high-performance packaging applications. By adhering to ISO 9895 and TAPPI T 826 standards, the SCT-01 ensures trustworthy results that align with international benchmarks. Its versatile, reliable, and precise features make it an ideal choice for any quality-focused operation.