ISO 3035 Flat Crush Resistance Test for Corrugated Fibreboard

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ISO 3035 is the test method for the flat crush resistance of corrugated fibreboard. To match this to your program, talk with our team.

What ISO 3035 Covers

It measures how much pressure the fluting of corrugated board withstands before the flutes collapse, indicating the quality and condition of the corrugated medium.

How the Test Is Run

A conditioned corrugated specimen is compressed flatwise between platens until the flutes crush, and the flat crush resistance is recorded.

Why It Matters

Flat crush indicates fluting quality and medium condition; flat, parallel platens and controlled conditioning are essential.

Reading the Designation

Cited as ISO 3035 with its edition year. Confirm the edition and specimen or conditioning requirements before finalizing setup. To configure a paper testing setup, request a quote.

Related Standards

ISO 3037 covers edgewise crush and TAPPI T 804 covers box compression.

Request a Quote

Setting up flat crush testing to ISO 3035? Request a quote and our team will help you build a system matched to your board grade and specimen size.


TensileMill CNC products for ISO 3035

Our specimen-preparation systems and testing equipment compatible with ISO 3035:


Configure your ISO 3035 setup with TensileMill CNC

Adding capacity or replacing older equipment? TensileMill CNC can support your ISO 3035 program. That typically means universal testing machines with paper and board grips and compression fixtures. Request a quote and our team will help you configure a system for ISO 3035.