ECT TESTING

ISO 3035

Ring Crush Test Standard

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Overview of ISO 3035

ISO 3035 specifies a standardized method to measure the flat crush resistance of corrugated fibreboard. This method focuses on single-faced och single-wall boards, providing a reliable measure of how fluting withstands perpendicular compressive forces.

In practical application, ISO 3035 testing allows manufacturers to verify if a corrugated board meets the minimum required crush strength, which is critical for stacked pallet shipments. A board that fails to meet the standard can result in product damage or financial losses due to crushed cartons during transport.

ISO3035
YSD-01 Krossningsprovare

YSD-01 Krossningsprovare

Importance of Mechanical Testing for Packaging

Mechanical testing evaluates how well packaging materials withstand forces such as stacking, compression, and handling. Tests like flat crush resistance provide insights into the load-bearing capacity of corrugated boards.

For instance, in a study comparing B-flute och C-flute boards, C-flute boards exhibited approximately 20% higher flat crush resistance, making them suitable for heavier products. By assessing these properties, manufacturers can reduce product damage, optimize material usage, and ensure compliance with international standards, such as ISO and ASTM packaging regulations.

Overview of Corrugated Board Structures

Different board types influence testing results and applications:

Single-faced boards:

Commonly used as protective layers in multi-packing.

Single-wall (double-faced) boards:

Standard choice for shipping cartons.

Double-wall and microflute boards:

Not covered by ISO 3035 due to unclear collapse endpoints.

For example, testing a single-faced B-flute board may yield a flat crush resistance of 2.5 kN/m, whereas a single-wall C-flute board could reach 3.5 kN/m. Such data guide engineers in choosing boards for heavy-duty packaging versus light consumer goods.

Förklaring av Flat Crush Tester och FCT

Purpose and Significance of ISO 3035 Testing

The main goal of ISO 3035 is to determine the compressive strength of corrugated boards under flat crush conditions. Key benefits include:

  • Ensuring boxes resist crushing during transport and storage.
  • Evaluating different board grades or fluting designs.
  • Optimizing production parameters for material efficiency.
  • Supporting quality assurance and compliance with international packaging standards.

For example, a logistics company may use ISO 3035 to compare boards under stack heights of 2 m and above, ensuring boxes on the bottom layers maintain integrity and prevent crushing of products above.

Testmetod för krossning av Oher

ISO 3035 Testing Process: Flat Crush Method

Förutom att ECT, RCT och FCT, avancerad Krossningsprovare som YSD-01 kan utföra andra viktiga tester:

  • Conditioning: Test pieces are equilibrated in a controlled atmosphere, usually 23 ± 2°C with 50 ± 5% relative humidity.
  • Placement: Pieces are centered on the lower platen.
  • Compression: Steady perpendicular force is applied until fluting collapse occurs.
  • Rate of Compression: Platens move at 12.5 mm/min ± 0.25 mm/min.
  • Measurement: Record maximum force sustained before fluting collapse.
  • Validation: Rotate samples to correct for leaning flutes and ensure consistent results.

Applicable materials include:

  • Single-faced corrugated fibreboard
  • Single-wall corrugated fibreboard (double-faced)

Boards must be free of defects such as tears or uneven fluting. Double-wall or microflute boards are excluded due to ambiguous collapse endpoints, ensuring reproducible and accurate results.

Oher Crush Testing Method​

Materials Suitable for ISO 3035 Testing

Modern Equipment for ISO 3035 Testing

Advanced instruments like the Cell Instruments YSD-01 Krossningsprovare offer:

  • Precise force measurement and platen control
  • Digital recording and data export
  • Compatibility with ECT och flat crush testing
  • Reproducible results for both quality control and R&D applications

In practice, using modern equipment allows engineers to automatically generate test reports, analyze trends across multiple production batches, and optimize material performance efficiently.

YSD-01 Krossningsprovare

Tekniska specifikationer

ISO 3035 Flat Crush Testing for Corrugated Fibreboard
Parameter Specifikation
Testområde (10±0,05) cm²
Mätområde (1-9999) S, (1-15)S, (15 ～ 300) S, (300 ～ 9999) S, omkopplare för tre områden
Volym Stort vakuum 380±1ml; litet vakuum (38±1) ml
Vakuumområde I-växel 50,66 kPa -> 29,33 kPa
II växel 50,66 kPa -> 48 kPa 
III växel: 50,66 kPa -> 48 kPa
Testtryck (100±2) kPa (automatiskt tryck)
Dimension 380x360x465 mm
Kraft  AC 220V 50Hz

Krossningsprovare är oumbärligt för pappers- och förpackningstillverkare som vill säkerställa produkternas hållbarhet och uppfylla branschregler. Tester som ECT, RCT, och FCT utgör ryggraden i utvärderingen av styrelsens prestationer och styrs av strikta standarder som t.ex. ISO 3037, TAPPI T811, ISO 3035och mycket mer. Med YSD-01 Krossningsprovare från Cell Instruments får du tillgång till en komplett testlösning som är exakt, mångsidig och kompatibel - vilket förbättrar både kvalitetskontrollen och kundnöjdheten.

- Cellinstrument

Ofta ställda frågor om Crush Tester

What materials can be tested using ISO 3035?

ISO 3035 is suitable for single-faced och single-wall (double-faced) corrugated fibreboard. It is not applicable to double-wall or microflute boards because the collapse endpoint is ambiguous. Using standardized materials ensures reliable and reproducible flat crush test results, which are critical for packaging design and quality control.

Den flat crush test involves placing a sample centrally on a flat crush tester and applying a perpendicular force at a controlled rate (12.5 mm/min ± 0.25 mm/min) until the fluting collapses. The maximum force recorded represents the board’s resistance. For example, a C-flute board may withstand 320 N, while a B-flute may only reach 260 N, allowing comparisons for packaging applications.

ISO 3035 testing evaluates the compressive strength of corrugated boards, ensuring boxes withstand stacking and transport stresses. By combining results with ECT testing or ring crush test standard data, manufacturers can select optimal board grades, minimize packaging failures, and ensure consistent protection of products during shipping and storage.

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