Absorbent liner is a liner material used to absorb and retain liquid, and is often used in care products in the medical and hygiene fields, such as sanitary napkins, adult diapers, baby diapers, etc. Its main function is to absorb and hold liquids while ensuring a dry surface for enhanced use and comfort.
performance testing
The performance testing of absorbent backing paper mainly includes the following aspects:
Water absorption speed: Use a water absorption speed Tester and other instruments to detect the water absorption speed of the water-absorbing backing paper, that is, the amount of liquid absorbed per unit time. During the test, it is necessary to place the sample in the test instrument, inject a certain amount of liquid, and measure the water absorption speed.
Water absorption: Use a Water Absorption Tester and other instruments to detect the water absorption of the absorbent backing paper, that is, the maximum amount of liquid that can be absorbed. During the test, it is necessary to place the sample in the test instrument, inject a certain amount of liquid, and measure the water absorption.
Absorption time: Use an absorption time Tester and other instruments to detect the absorption time of the absorbent backing paper, that is, the time required from liquid contact to complete absorption. During the test, the sample needs to be placed in the test instrument, a certain amount of liquid is injected, and the absorption time is measured.
Uniformity of liquid distribution: Use liquid distribution Tester and other instruments to test the uniformity of liquid distribution on the absorbent backing paper. During the test, it is necessary to place the sample in the test instrument, inject a certain amount of liquid, and measure the uniformity of the liquid distribution.
Air permeability: Use an air permeability Tester and other instruments to test the air permeability of the absorbent backing paper to evaluate its comfort and air permeability. During the test, the sample needs to be placed in the test instrument to measure the air permeability.
Chemical composition: Use infrared spectrometer, elemental analyzer and other instruments to test the chemical composition of the absorbent backing paper to confirm that it complies with relevant standards and regulations, and at the same time evaluate its environmental friendliness.
Physical properties: including testing of physical properties such as tensile strength, tear strength, thickness, density, etc., to evaluate the structural strength and tensile cracking resistance of the absorbent backing paper.
Composition residues: Use gas chromatography, liquid chromatography and other instruments to detect the residues of harmful substances in the absorbent backing paper to ensure that they will not cause harm to human health.
Microbiological testing: Use biological safety cabinets, colony counters and other instruments to test the microorganisms in the absorbent backing paper to ensure that it meets relevant standards and regulations, and at the same time evaluate its safety and hygiene.
Packaging and printing quality: Including testing of printing accuracy, color fidelity, printing quality, etc., to evaluate the packaging and printing quality of absorbent backing paper to ensure its appearance quality and brand image.
Specific detection method
The following is the specific method for testing the performance of absorbent backing paper:
Water absorption speed: contact the water absorption backing paper sample in the water absorption speed Tester with the liquid, start the test instrument, and record the amount of liquid absorbed per unit time. The test needs to be tested according to the standard requirements to maintain the consistency of the ambient temperature and humidity.
Water absorption: Contact the absorbent backing paper sample in the Water Absorption Tester with the liquid, start the test instrument, and record the weight after the liquid is completely absorbed. The test needs to be tested according to the standard requirements to maintain the consistency of the ambient temperature and humidity.
Absorption time: Contact the absorbent backing paper sample in the absorption time Tester with the liquid, start the Tester, and record the time required to completely absorb the liquid. The test needs to be tested according to the standard requirements to maintain the consistency of the ambient temperature and humidity.
Uniformity of liquid distribution: test with a liquid distribution Tester. Contact the absorbent backing paper sample in the test instrument with the liquid, start the test instrument, observe the distribution of the liquid on the absorbent backing paper, and evaluate the uniformity of the liquid distribution. The test needs to be tested according to the standard requirements to maintain the consistency of the ambient temperature and humidity.
Air permeability: Tested with an air permeability Tester. Place the absorbent backing paper sample in the testing apparatus and record the air permeability. The test needs to be tested according to the standard requirements to maintain the consistency of the ambient temperature and humidity.
Chemical composition: send the sample to the laboratory, use infrared spectrometer, elemental analyzer and other instruments to test, and evaluate the chemical composition of the absorbent backing paper.
Physical properties: The test needs to be tested in accordance with the standard requirements to maintain the consistency of the ambient temperature and humidity.
Composition residues: send the samples to the laboratory, use gas chromatography, liquid chromatography and other instruments for detection, and evaluate the harmful substance residues in the absorbent backing paper.
Microbiological detection: Use biological safety cabinets, colony counters and other instruments for microbial detection. Samples are sent to a laboratory for testing following standard methods to assess microbial contamination in the absorbent liner.
NBCHAO reminds you: the selection of various testing methods and instruments should be based on specific testing requirements and standard requirements, and calibration and verification should be carried out in accordance with relevant regulations to ensure the accuracy and reliability of testing results. At the same time, when testing the performance of absorbent backing paper, it is necessary to keep the laboratory clean and hygienic to avoid the influence of external pollution on the test results.
