The core risk is bacterial proliferation and disruption of the local microflora from use beyond the product's designed operating conditions, regardless of absorption capacity.
Parameterized Evidence:
Defined Operating Conditions: For an "ultra-thin" pad (thickness ≤1.5mm) with a nominal absorption ≥10mL, the recommended safe usage duration typically does not exceed 4 hours. This is a hygiene guideline based on bacterial growth curves, not product failure time. In a damp 35-37°C environment, bacteria like S. aureuscan reach the logarithmic growth phase within hours.
Absorption Performance Parameter: Rewet is critical. Per Chinese standard GB/T 30133, premium products should have a rewet value ≤1.0g. High rewet indicates a damp surface conducive to bacterial growth.
User Guidance: Clearly distinguish between "absorption saturation" and "hygiene safety" thresholds. Saturation may manifest as leakage, but hygiene risk exists before leakage occurs.
The core risk is bacterial proliferation and disruption of the local microflora from use beyond the product's designed operating conditions, regardless of absorption capacity.
Parameterized Evidence:
Defined Operating Conditions: For an "ultra-thin" pad (thickness ≤1.5mm) with a nominal absorption ≥10mL, the recommended safe usage duration typically does not exceed 4 hours. This is a hygiene guideline based on bacterial growth curves, not product failure time. In a damp 35-37°C environment, bacteria like S. aureuscan reach the logarithmic growth phase within hours.
Absorption Performance Parameter: Rewet is critical. Per Chinese standard GB/T 30133, premium products should have a rewet value ≤1.0g. High rewet indicates a damp surface conducive to bacterial growth.
User Guidance: Clearly distinguish between "absorption saturation" and "hygiene safety" thresholds. Saturation may manifest as leakage, but hygiene risk exists before leakage occurs.
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