Retail packaging bag testing

There are various testing methods for retail packaging bags to ensure that their quality, safety, and environmental performance meet relevant standards and requirements. The following are some of the main testing methods:

1. Appearance inspection
Visual inspection: Observe the appearance of the packaging bag with the naked eye to check whether it is flat, without damage, stains, blurred printing, and other defects.
Dimension measurement: Use calipers, rulers, and other tools to measure the length, width, height, and other dimensions of the packaging bag to ensure that it meets the design requirements.
2. Physical performance testing
Thickness measurement: Use a thickness gauge (such as a CHY-CU film thickness gauge) to measure the thickness of the packaging bag to ensure that its thickness is uniform and meets the standards.
Tensile strength test: Use a tensile testing machine (such as an MTL (PC) electronic tensile testing machine) to perform a constant speed tensile test to measure the tensile strength and elongation at the break of the packaging bag and evaluate its tensile resistance.
Tear strength test: Use a tear strength testing machine (such as the SLD-S1 tear tester) to measure the tear strength of the packaging bag and evaluate its tear resistance.
Sealing performance test: Use a sealing performance tester (such as LEAK-L1 positive pressure leakage and sealing strength tester or MFY-M3 negative pressure sealing tester) to test the sealing performance to ensure that the packaging bag will not leak during storage and transportation.
3. Chemical performance test
Sanitary index test: Use chemical analysis methods (such as gas chromatography, high-performance liquid chromatography, etc.) to detect whether the packaging bag contains harmful substances, such as heavy metals, plasticizers such as phthalates, and residual solvents.
Solvent residue detection: Use a gas chromatograph (such as GC6900 gas chromatograph) to detect the residual amount of solvent to ensure that the residual amount of solvent in the packaging bag meets the relevant standards.
4. Special performance test
Barrier performance test: For packaging bags that need to block oxygen, water vapor, and other substances, use an oxygen permeameter, moisture permeameter, and other equipment to measure their barrier properties.
Heat sealing performance test: Test the heat sealing strength of heat-sealed packaging bags to evaluate whether their heat sealing effect is good.
Ink friction resistance test: A friction resistance tester (such as MCY-J1 friction resistance tester) is used to test the ink friction resistance and check the firmness of the printed ink.
5. Environmental performance test
Degradability test: For packaging bags that claim to be degradable, perform biodegradation or photodegradation tests to evaluate their degradation performance.
Reusability evaluation: Evaluate whether the packaging bag is designed to be reusable and detect whether there are safety hazards such as small parts falling off.
6. Label and packaging inspection
Label inspection: Check whether the label on the packaging bag is clear and accurate, including information such as product name, specifications, manufacturer, production date, shelf life, etc.
Package integrity inspection: Check whether the packaging of the packaging bag is complete, whether there is damage, deformation missing accessories, etc.
In summary, the inspection methods for commodity retail packaging bags cover multiple aspects such as appearance, physical properties, chemical properties, special properties, environmental performance, and labeling and packaging. These inspection methods ensure that the quality, safety, and environmental performance of the packaging bags meet relevant standards and requirements, and provide strong protection for the rights and interests of consumers and environmentally sustainable development.