Basic Information About the Paper and Cardboard Burst Strength Test (BST)

The Paper and Cardboard Burst Strength Test (BST) is a strength test that measures the bursting resistance of paper or cardboard materials under increasing hydraulic pressure. This test plays a crucial role in the packaging industry, as it helps determine the resistance of paper and cardboard packaging materials to pressure during transportation and storage.

This article provides an in-depth examination of international standards related to the burst strength test and their significance.

Purpose and Importance of the Burst Strength Test

The burst strength test evaluates the resistance of paper and cardboard to tearing, puncturing, and other mechanical damages. The test results indicate the maximum pressure the material can withstand before bursting, which is a critical parameter for ensuring the safe transportation and storage of packaging materials.

Materials with low burst strength may lead to damage to packaged products. Therefore, this test is particularly applied to:

• Corrugated cardboard boxes
• Paper bags
• Packaging papers
• Cardboard boxes

It is widely used in the quality control of these materials.

Burst Strength Test Standards

The burst strength test is conducted under various international standards to ensure consistency in test methods and reliability of results. Below are the most commonly used standards in this field:

1. ISO 2758 – Burst Strength Test for Paper

ISO 2758 is an international standard used to determine the burst strength of paper. It applies to papers with burst resistance values ranging from 70 kPa to 1,400 kPa.

Test Method:

• A paper sample is subjected to increasing hydraulic pressure.
• The pressure value at the bursting point is recorded.

2. ISO 2759 – Burst Strength Test for Cardboard and Corrugated Board

ISO 2759 is used to measure the burst strength of thicker materials such as cardboard and corrugated board. It applies to materials with a burst strength of 350 kPa or higher.

Test Method:

• A cardboard or corrugated board sample is placed in a special testing device.
• The bursting pressure is measured.

3. ISO 3034 – Burst Strength of Corrugated Cardboard Boxes

This standard measures the burst strength of corrugated cardboard boxes.

Scope:

• The test evaluates the bursting resistance of various layers in corrugated cardboard boxes to assess packaging performance.

4. DIN 53141 – Burst Strength Testing

DIN 53141 is a German standard used to measure the burst strength of paper and cardboard materials.

5. EN ISO 2758 and EN ISO 2759 – Burst Strength Standards

These standards define the burst strength test methods for paper and cardboard materials, respectively.

6. TS 3026 and TS EN ISO 2759 – Burst Strength Testing Standards

TS 3026 and TS EN ISO 2759 are national standards used for burst strength testing in Turkey, ensuring the local quality control of packaging materials.

7. BS 3137 – Burst Strength Testing

BS 3137 is a British standard used to measure the burst strength of paper and cardboard materials.

8. TAPPI T403 – Burst Strength Testing Standards

TAPPI T403 is a widely recognized industry standard used for determining the burst strength of paper and cardboard materials.

Applications of Burst Strength Tests for Corrugated Cardboard and Paper

• Packaging Industry: Used to test the durability of corrugated cardboard boxes and paper bags.
• Recycling Sector: Applied in the quality control of recycled paper and cardboard materials.
• Quality Control Laboratories: Ensures that paper and cardboard materials comply with industry standards.

Conclusion

The paper and cardboard burst strength test plays a critical role in determining the strength of packaging materials. International standards such as ISO, EN, DIN, and TAPPI ensure that these tests are conducted in a consistent and reliable manner.

Maintaining high-quality standards for packaging materials is essential for ensuring the safe transportation and storage of products.