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Sanitary Napkin Testing
Sanitary Napkin Testing
Menstruation is an inevitable part of a woman's life. Good quality sanitary napkins can surely reduce the in-convenience caused by vaginal blood discharge though they cannot reduce the pain of menstruation. A sanitary napkin should pass seven basic tests: no leakage, no unaesthetic color, no odour, no noise, adhesive, comfortable and hygienic.
Any product must rely on its safety, quality and reputation to retain the loyalty of customers. Disposable sanitary napkins impact everyday life of females and a bad experience will lose you a customer.
A sanitary napkin or a sanitary towel is an absorbent item that is being used to absorb flow of blood during menstruation or any other situation by women . Both performance and comfort are a key component in the market segment of sanitary napkins. Game-changing technologies such as super absorbent pads has changed the complete scenario of sanitary hygiene.
Sanitary napkins are one-time use product and needs to be disposed after use. All females have a basic right of access to quality sanitary napkins, this is why the Bureau of Indian Standards (BIS) has set IS-5405 to maintain safety and quality during manufacturing of these products. We perform bench testing to test product properties such as absorbency, material stiffness, abrasiveness, size, pH, material used, finishing and disposability etc.
Parameters for testing Sanitary Napkins
Absorbent pads have a combination of absorbent wood pulp, tissue, cotton or cellulose wading along with a super absorbent polymer (SAP). SAPs (such as, sodium acrylate) enhances fluid holding capacity of the napkin, thus preventing leakages.
The top sheet should be made of porous non-allergic materials like cotton sleeving, gauze and non-woven fabrics as it is in constant contact with the skin. Hence, it is necessary that the material used in the manufacturing should not cause irritation or skin reactions.
Size of sanitary napkin vary according to the suitability and comfort of the costumer. Commonly three sizes of sanitary napkins are available in the market, regular, large and extra large. Under IS 5405, dimensions for all the three sizes have been defined including the length, width and thickness.
The surface of sanitary napkins need to be smooth and even. It must be soft and comfortable with even distribution of the absorbent fillers at correct points.
Accumulation of non-biodegeradable waste has always been a threat to the environment. We test sanitary napkins for their disposability by immersing it in 15 litres of water and observing for disintegration as per the standards.
The pH of sanitary napkins should remain neutral; neither acidic nor alkaline. This is because vagina has a natural pH and any disbalance can lead to urine-realted infections.
The covering used in the napkin should be non-allergic and the adhesive used in them must not leave any mark or stain.
A sanitary napkin should be tested for its resistance to mechanical penetration i.e., the force required to rupture it. This procedure is also called Ball Burst procedure.
Some other tests can be performed on sanitary napkins such as flexibilty test, packaging test and marking test.