Polylactic Acid (PLA), a bio-based biodegradable polymer derived from renewable plant resources such as corn and sugarcane, is increasingly playing a vital role in the green transformation of feminine hygiene products-particularly in sanitary napkins, panty liners, and related items. Its core value lies in significantly reducing environmental impact after disposal while ensuring user safety and comfort.
The key advantages of Sterilizable PLA Granules in feminine hygiene applications include compostability under industrial conditions (58–70°C, high humidity, active microorganisms), with complete degradation into CO₂, H₂O, and organic matter within 90–180 days. The material offers excellent skin compatibility with a pH level close to neutral or slightly acidic (approximately 5.5–6.5), matching the healthy skin environment. It contains no irritating residues, requires no solvents during production, and is free from harmful substances such as formaldehyde and optical brighteners. With low allergenicity certified by ISO 10993-5/-10 for cytotoxicity and skin sensitization tests, it provides a dry, non-sticky surface that enhances user comfort. The lactic acid produced during degradation inhibits the growth of certain bacteria, helping to reduce odor.
Sterilizable PLA Granules demonstrate excellent processing compatibility, adaptable to existing non-woven production lines including hot-air, spunbond, and hydroentanglement technologies, requiring only minor temperature adjustments (PLA processing temperature: 180–230°C). Although there remains room for improvement in cost efficiency and wet strength, Sterilizable PLA Granules have become essential materials for premium eco-friendly sanitary napkins, representing the industry's shift from mere convenience toward dual values of personal health and planetary friendship. Their compatibility with various sterilization methods and certification under international biological safety standards make them the responsible choice for brands committed to combining performance, safety, and environmental stewardship in feminine care products.
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