Non woven fabric

The basic structure of sanitary napkins and pads includes the following parts: 1.Surface layer: The part that comes into direct contact with the skin, usually made of non woven fabric, perforated film mesh, or pure cotton material, with a penetrating and isolating effect. The recommended material for the surface layer is non-woven fabric or pure cotton, as they are soft, breathable, and not easily irritating to the skin. 2.Absorption layer: The main materials include fluff pulp, polymer absorbent resin (SAP), or pure cotton absorption layer. SAP has super strong water absorption ability, which can quickly lock in water and reduce backflow. It is recommended to use polymer absorbent resin as the material for the absorption layer, as it can effectively lock in moisture. 3.Bottom layer: usually composed of polyethylene leak proof film or breathable lamination PE film (PE film+non-woven fabric), which plays a role in preventing menstrual blood leakage, while maintaining breathability and avoiding stuffiness. 4.Adhesive backing: used to fix sanitary napkins on underwear. It is recommended to use food grade or medical grade hot melt adhesive, which is non-toxic, odorless, and non irritating to the skin. 4.PE pouch film: The outer packaging of a single sanitary napkin is usually made of materials such as PE film, composite non-woven fabric envelope, silicon coated film, or aluminum film. PE film has stretchable and waterproof properties, and the composite non-woven fabric coating is environmentally friendly and composed of non-woven fabric and PE film. The silicon coated film has the characteristic of not being easily damaged, while the aluminum film has a high-end appearance and is moisture-proof.

Newborns have delicate and sensitive skin, and the choice of raw materials for disposable diapers as a 24-hour intimate product directly affects the comfort and health of the baby. Modern diapers achieve a balance of water absorption, breathability, and softness through the combination of various high-performance materials. The following is a detailed analysis of the core raw materials for diapers:   1. Surface material: skin friendly and non irritating 3D embossing non woven fabric: Most high-end diapers use polypropylene (PP) non-woven fabric, with delicate fibers and strong breathability, which can quickly remove moisture and reduce the risk of red buttocks. Some brands will add natural cotton fibers to enhance the tactile sensation.    3D embossing process: reduces skin contact area and keeps the surface dry.    Antibacterial treatment: Some products may add natural antibacterial ingredients (such as chamomile extract) to inhibit bacterial growth.    2. Absorbent core: the core of efficient water locking Polymer Water Absorbent Resin (SAP): It can absorb liquids weighing tens of times its own weight, has strong water locking ability, and avoids reverse osmosis. High quality SAP requires food grade safety certification (such as the EU 10/2011 standard).    Fluffy pulp: As a traditional absorbent material, it is mixed with SAP to improve the flow rate, but in recent years it has gradually been replaced by full core (pure SAP+dust-free paper) technology, making diapers thinner and lighter.    3. Leak proof layer: Double protection design Breathable PE film: The bottom layer adopts microporous breathable film, which allows water vapor to be discharged but blocks liquid leakage, avoiding stuffiness. Three dimensional leak proof edge: usually a combination of elastic rubber and non-woven fabric to prevent side leakage, while also being soft and not tight on the legs.    4. Other detailed materials Waist circumference and Velcro: Elastic spandex and non-woven fabric ensure a snug fit, while some brands use plant-based adhesives (such as corn starch adhesive) to reduce the risk of sensitization.    Environmentally friendly biodegradable materials: Emerging brands use PLA (polylactic acid) or bamboo fiber to replace some plastic components, reducing environmental burden.    Safety standards for raw materials High quality diapers require multiple international certifications: Skin safety: ISO 10993 (biocompatibility testing) OEKO-TEX ®  Standard 100 (no harmful substances).    Environmental friendliness: FSC certification (sustainable forest fluff pulp), compostable biodegradable label.