1、 Test object

Plastic film substrate: such as polyethylene (PE), polypropylene (PP) and other film materials.

Flexible packaging composite film: a packaging film composed of multiple materials, commonly used for packaging products such as food and medicine.

Coated paper: Paper with a specific coating on its surface, used to improve its barrier properties, strength, and other properties.

Aluminum foil: It has excellent barrier and light blocking properties and is commonly used for packaging high-end products.

Other heat sealed composite films: including composite films made of PVC, PET and other materials, formed by heat sealing process to seal.

2、 Test content

Sealing heat sealing strength:

Test the sample by hot pressing sealing method, simulate the actual sealing process, and determine the heat sealing strength at the sealing point. This can reflect the quality of the sealing, ensuring that the product will not be damaged due to sealing issues during transportation and storage.

The test results are usually represented by parameters such as indentation depth and tensile strength, which can intuitively reflect the firmness of the seal.

Sealing performance:

Some sealing strength testers also have sealing performance testing functions, such as testing the bursting pressure and sealing leakage performance of packaging bags through positive pressure method.

This type of test can evaluate the sealing effect of packaging bags under internal pressure or external impact, ensuring that the product will not be damaged due to air leakage, liquid leakage, and other issues.

3、 Testing method

Tensile test: Apply longitudinal tensile force at the sealing area to observe whether there is rupture or separation at the sealing area, in order to determine its tensile resistance.

Pressure test: Apply a certain pressure inside the packaging bag and observe whether there is any air leakage or rupture at the seal to determine its sealing performance.

4、 Equipment features

Automated operation: Modern sealing strength testers often use automation technology to automatically complete the testing process, improving testing efficiency and accuracy.

High precision measurement: Using high-precision force and pressure sensors to ensure the accuracy of test results.

Multiple testing modes: Supports multiple testing modes, such as constant speed, constant load, cyclic loading, etc., to meet different testing needs.

5、 Application scope

The sealing strength tester is widely used in industries such as food, medicine, daily chemical, electronics, and chemical to check the sealing quality of packaging materials and ensure the safety and stability of products.

The sealing strength tester is a powerful and widely used testing equipment that provides strong support for the production of related industries by testing the sealing strength of packaging materials.