Super Absorbent Polymer Film Without Fluff Pulp for Thin Absorbers
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Solution Overview
Problem
Existing super absorbent polymers face challenges in achieving thinness, uniform absorption performance, and environmental sustainability due to the use of auxiliary substances like fluff pulp, which also leads to scattering and manufacturing inefficiencies.
Innovation Solution
A preparation method for a film-type super absorbent polymer involving a monomer composition of acrylic acid-based monomers, cellulose-based thickeners, moisturizing agents, and polymerization initiators, cast onto a substrate and processed through heat and/or light irradiation to form a hydrogel film, followed by drying, without the need for auxiliary substances.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If fluff pulp is used as an auxiliary substance to maintain absorber shape, then shape retention is improved, but product thickness increases and wearability deteriorates
Solution Approach 1:
The invention extracts and removes the fluff pulp auxiliary substance from the absorber composition, achieving shape retention through the intrinsic properties of the superabsorbent polymer particles themselves rather than relying on external supporting materials
Solution Approach 2:
The superabsorbent polymer particles provide self-supporting capabilities through their gel structure formation, allowing the absorber to maintain its shape without external auxiliary substances like fluff pulp
2Shape
If fluff pulp is used to maintain absorber shape, then shape retention is improved, but manufacturing cost increases
Solution Approach 1:
The invention extracts and eliminates the fluff pulp component from the formulation, reducing material costs and simplifying the manufacturing process while maintaining absorber functionality through optimized superabsorbent polymer particle properties
Solution Approach 2:
The invention discards the unnecessary fluff pulp auxiliary substance, recovering manufacturing efficiency and cost benefits while achieving the same shape retention function through alternative mechanisms in the superabsorbent polymer system
3Quantity of substance
If powder-type super absorbent polymer is used, then absorption capacity is achieved, but scattering and leakage occur during manufacturing and use
Solution Approach 1:
The invention uses a granular structure that behaves like discrete units with defined boundaries, preventing the scattering and leakage characteristics of powders while maintaining the absorption capacity through the gel-forming properties of the superabsorbent polymer particles
Solution Approach 2:
The invention creates a composite structure where superabsorbent polymer particles are integrated with a substrate material, forming a unified system that prevents scattering and leakage while preserving the high absorption capacity of the polymer particles
4Quantity of substance
If powder-type super absorbent polymer is used, then absorption capacity is achieved, but uniform absorption control is difficult
Solution Approach 1:
The invention applies local quality control by ensuring uniform distribution and consistent properties of the superabsorbent polymer particles throughout the absorber structure, allowing precise control of absorption characteristics in different regions through controlled particle placement and substrate integration
Solution Approach 2:
The invention achieves homogeneity in the absorber structure through uniform distribution of superabsorbent polymer particles and consistent integration with the substrate, enabling uniform absorption performance across the entire product
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 method produces a flexible, thin, and transparent super absorbent polymer film with excellent absorption properties, reducing scattering and manufacturing costs while ensuring uniform absorption characteristics.
Implementation Method 1
forming a hydrogel polymer film by irradiating heat and/or light while drawing the monomer composition film
Implementation Method 2
A super absorbent polymer (SAP) is a type of synthetic polymeric material capable of absorbing 500 to 1000 times its own weight of moisture
Implementation Method 3
preparing a monomer composition by mixing an acrylic acid-based monomer having at least partially neutralized acidic groups, a cellulose-based thickener, a moisturizing agent
Data Source
AI summary
The present disclosure relates to a preparation method for a super absorbent polymer film. Specifically, it relates to a preparation method for a new type of super absorbent polymer film, which is thin and exhibits excellent absorption performance. In addition, the super absorbent polymer film of the present disclosure has excellent flexibility and excellent mechanical properties, is free from scattering or leaking, and does not require an auxiliary substance such as pulp, so that products can be made thinner and the manufacturing process and costs may be reduced.