Organic Cotton Sanitary Pad with Natural Pulp Absorption
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Solution Overview
Problem
Conventional sanitary pads contain non-biodegradable superabsorbent polymers like polyacrylate, leading to environmental pollution and potential skin irritation, and they rely on chemical materials that can cause health issues during prolonged use.
Innovation Solution
A sanitary pad made with pure organic cotton for the upper layer and natural compressed pulp for absorption, using a chlorine-free bleaching process and without superabsorbent polymers, combined with a waterproof layer for improved absorption and leakage prevention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If superabsorbent polymer (polyacrylate) is used for absorption, then absorption capacity is improved, but environmental pollution increases and skin irritation occurs
Solution Approach 1:
The patent removes the harmful superabsorbent polymer (polyacrylate) from the sanitary pad structure and replaces it with natural materials. The absorption function is achieved through a combination of compressed cotton and natural pulp, eliminating the source of skin irritation and environmental pollution while maintaining adequate absorption capacity.
Solution Approach 2:
The patent changes the material parameters from synthetic polymers to natural materials. Specifically, it uses compressed cotton with specific gravity and porosity characteristics, and natural pulp with controlled moisture content and fiber structure, to achieve absorption without the harmful effects of polyacrylate.
2Productivity
If chemical absorption materials are used, then absorption rate is improved, but health issues occur during prolonged use
Solution Approach 1:
The patent employs a disposable sanitary pad design where the absorption materials (compressed cotton and natural pulp) are intended for single use. This approach allows the use of natural materials that may not have the sustained absorption rate of chemical polymers, but provide sufficient performance for the brief duration of use, eliminating health concerns associated with prolonged chemical contact.
3Object-generated harmful factors
If natural materials are used instead of superabsorbent polymer, then environmental friendliness is improved, but absorption capacity may be reduced
Solution Approach 1:
The patent creates a composite absorption structure combining compressed cotton and natural pulp. The compressed cotton provides initial absorption and rapid wicking action, while the natural pulp layer provides bulk absorption capacity. This composite approach achieves sufficient total absorption capacity using entirely natural materials, eliminating the need for synthetic superabsorbent polymers.
Solution Approach 2:
The patent compensates for the lower absorption capacity of natural materials by increasing the thickness and volume of the absorption layers. The multi-layer structure with compressed cotton and natural pulp creates additional absorption dimensions, allowing natural materials to achieve the required absorption capacity without chemical polymers.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The eco-friendly design enhances absorption capacity and cushioning while reducing environmental impact and skin irritation, providing effective menstrual fluid management without chemical absorbers.
Implementation Method 1
an upper sheet made of pure organic cotton through which a liquid is permeable
Implementation Method 2
a first absorbing sheet disposed below the upper sheet and made of pure organic cotton configured to absorb the liquid
Implementation Method 3
a second absorbing sheet disposed below the first absorbing sheet and made of natural compressed pulp configured to absorb the liquid
Implementation Method 4
a waterproof sheet disposed below the second absorbing sheet and having air permeability
Data Source
AI summary
The present invention provides a sanitary pad including an upper sheet made of pure organic cotton through which a liquid is permeable, a first absorbing sheet disposed below the upper sheet and made of pure organic cotton configured to absorb the liquid, a second absorbing sheet disposed below the first absorbing sheet and made of natural compressed pulp configured to absorb the liquid, and a waterproof sheet disposed below the second absorbing sheet and having air permeability.