ECT TESTING

ISO 3035

Ring Crush Test Standard

Tietoa meistä

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 ja 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 Puristustesteri

YSD-01 Puristustesteri

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 ja 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.

Flat Crush Tester ja FCT selitetään

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.

Oher Crush -testausmenetelmä

ISO 3035 Testing Process: Flat Crush Method

Lisäksi ECT, RCT ja FCT, edistynyt murskaimet kuten YSD-01 voi suorittaa muita tärkeitä testejä:

  • 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 murskatesteri offer:

  • Precise force measurement and platen control
  • Digital recording and data export
  • Compatibility with ECT ja 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 Puristustesteri

Tekniset tiedot

ISO 3035 Flat Crush Testing for Corrugated Fibreboard
Parametri Tekniset tiedot
Testialue (10±0.05) cm²
Mittausalue (1-9999) S, (1-15)S, (15～300) S, (300～9999) S, kolmen vaihteluvälin katkaisija
Volume Iso alipaine 380±1ml; Pieni alipaine (38±1) ml.
Tyhjiöalue I vaihde 50.66kPa -> 29.33kPa
II vaihde 50,66kPa -> 48kPa 
III vaihde:50.66kPa -> 48kPa
Testipaine (100±2) kPa (automaattinen paine)
Mitta 380x360x465 mm
Teho  AC 220V 50Hz

Puristustesteri on välttämätön paperin ja pakkausten valmistajille, jotka haluavat varmistaa tuotteiden kestävyyden ja täyttää alan määräykset. Testit, kuten ECT, RCTja FCT muodostavat hallituksen toiminnan arvioinnin selkärangan, jota säätelevät tiukat standardit, kuten ISO 3037, TAPPI T811, ISO 3035.ja paljon muuta. Kun YSD-01 Puristustesteri Cell Instrumentsilta saat käyttöösi täydellisen testausratkaisun, joka on tarkka, monipuolinen ja vaatimustenmukainen, mikä parantaa sekä laadunvalvontaa että asiakastyytyväisyyttä.

- Cell Instruments

Usein kysyttyjä kysymyksiä Crush Testeristä

What materials can be tested using ISO 3035?

ISO 3035 is suitable for single-faced ja 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.

The 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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