Nafei sanitary napkins OEM‘s products standardized tests for sanitary napkin absorbency

Nafei sanitary napkins OEM‘s products standardized tests for sanitary napkin absorbency

Sanitary napkins undergo a series of standardized tests to ensure their absorbency and overall quality.These tests are critical for manufacturers,especially those operating as Original Equipment Manufacturers(OEMs),to meet regulatory standards and consumer expectations.Below is an overview of the key standardized tests for sanitary napkin absorbency.

Key Absorbency Tests（Nafei sanitary napkins OEM）

Gravimetric Method:

This method measures absorbency by weighing the sanitary napkin before and after immersion in a liquid.The weight difference indicates the amount of liquid absorbed,providing a precise measure of absorbency capacity.

Drop Test:

The drop test evaluates how quickly a material absorbs liquid by placing a drop on the surface and measuring the time taken for complete absorption.This test is particularly useful for assessing initial absorbency rates.

Centrifuge Retention Test:

This test simulates real-world conditions by saturating a sample with liquid and then applying centrifugal force to determine how much liquid it retains under pressure.It assesses the napkin's ability to hold liquid even when subjected to movement or compression.

Water Retention Test:

Conducted according to ASTM standards,this test involves immersing the sanitary napkin in water and comparing its weight before and after centrifugation to measure its liquid retention capacity.

Liquid Strike-Through Test:

This test measures the time taken for liquid to penetrate from the upper layer of the napkin to its inner layers,ensuring that it does not leak back onto the skin.

Fluid Retention Capacity Test:

According to ISO standards,this involves soaking the napkin in fluid,drying it,and reweighing it to calculate fluid retention as a percentage of its dry mass.

Rewet Testing:

This evaluates whether any absorbed fluid returns to the surface after contact,which is crucial for user comfort and preventing irritation.

Regulatory Standards

Manufacturers must comply with various international standards,such as those set by the Bureau of Indian Standards(BIS)and ASTM,which outline specific testing methods and performance criteria for sanitary products.For example,IS 5405:2019 specifies testing protocols for absorbency and safety,ensuring that products meet rigorous quality benchmarks before reaching consumers.

The combination of Nafei OEM standardized tests ensures that sanitary napkins are not only effective in absorbing menstrual flow but also safe and comfortable for users.OEMs must adhere to these testing protocols to maintain product quality and comply with regulatory requirements,ultimately enhancing consumer trust in their products.