Component of Sanitary Pads
The Anatomy of a Sanitary Pad: A Breakdown
Sanitary pads, essential for menstrual hygiene, are composed of several layers working in tandem to provide comfort, protection, and absorbency.Let's delve into the components that make up these everyday essentials.
Top Sheet (Cover Layer)
- Material: Non-woven fabric made of polypropylene or polyester Soft, smooth, comfortable, good touching, Breathable Exquisite pattern design Strong tensile strength and tightness Good sanitation and formation, Non-toxic, tasteless and harmless, Environmentally-friendly Excellent water permeate performance soft perforated PE film is skin-friendly
- Function: This layer is in direct contact with the skin and is designed to be soft and comfortable. It also allows fluids to pass through to the absorbent core while keeping the surface dry.
Acquisition and Distribution Layer (ADL)
- Material: A layer of non-woven fabric, often treated with surfactants.Rapid Absorption, Distribution Efficiency, Retention Capacity, Surface Dryness, Integration with Core Materials, Softness and Comfort, Thinness and Discreetness.
- Function: This layer quickly moves fluid away from the top sheet and distributes it evenly into the absorbent core, preventing leaks and enhancing absorption speed.
Absorbent Core
- Material: A combination of fluff pulp (wood pulp) and superabsorbent polymers (SAP), such as sodium polyacrylate.High quality SAP has the excellent capacity to absorb liquids in sanitary napkins. SAP for sanitary napkin raw materials performs well in water retention.High quality SAP can help save the usage of other sanitary napkin raw materials, such as fluff pulp.
- Function: The core is the main absorbent component that retains and locks in fluids to keep the user dry.
Back Sheet (Leak-proof Layer)
- Material: Polyethylene film or a breathable film made of polyethylene and polypropylene.The back sheet in sanitary pads serves several important functions, primarily focused on leakage prevention and user comfort. Key properties of the back sheet include:
- Function: This layer prevents leakage by keeping the absorbed fluid contained within the pad. It also acts as a barrier to moisture.
Adhesive
- Material: Pressure-sensitive adhesives made of synthetic or natural rubber, resins, and tackifiers. Adhesive must have strong bonding properties, While being strong, the adhesive should also be gentle on the skin to prevent irritation or discomfort, especially during removal. The adhesive should maintain its bonding strength including different temperatures and levels of moisture (such as sweat or menstrual fluid).
- Function: Adhesives are applied to the back sheet and wings to secure the pad to the underwear and keep it in place during use.
Release Paper (Release Liner)
- Material: Silicone-coated paper.The Sticky Tape is used to the individual packing flim of all kinds of the sanitary napkin
- Function: This layer protects the adhesive strips before use. It is peeled off to expose the adhesive when the pad is applied.
Wings (Preventing Leakage)
- Material: Non-woven fabric with adhesive, often reinforced with elastic materials such as spandex or elastane for stretchability.The wings on sanitary pads are extensions on the sides of the pad that wrap around the underwear and provide additional protection against leaks. Key properties of wings include.
- Function: Wings help secure the pad to the underwear and provide additional protection against side leaks adhesive strips that fold over the sides of the pad.
Fragrance and Odor Control
- Material: Fragrance compounds, odor control agents such as cyclodextrin, or activated charcoal. Fragrances used in sanitary pads are typically designed to provide long-lasting odor control throughout the duration of pad use.
- Function: These components are added to provide a fresh scent. Their use is optional and varies by brand and product line.
Elastic Components
- Material: Elastic threads or films made of materials like spandex or elastane.Elastic components in sanitary pads play a crucial role in providing a secure and comfortable fit, as well as preventing leaks. Here are the key properties of elastic components used in sanitary pads:
- Function: Added to certain parts of the pad, such as the wings or sides, to enhance fit and comfort by providing stretchability.