Pulpless Super Absorbent Polymer Sheet with Open Pore Channels
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Solution Overview
Problem
The use of fluff pulp in hygiene products containing super absorbent polymer particles leads to poor wearability and increased manufacturing costs, and there is a need for a pulpless absorber that maintains absorption performance.
Innovation Solution
A preparation method for a super absorbent polymer sheet involving a monomer composition with a water-soluble ethylene-based unsaturated monomer, polymerization initiator, internal cross-linking agent, foam stabilizer, ionic polymeric binder, and inorganic filler, which is thermally or photopolymerized to form a hydrogel polymer and then dried into a sheet form with an open pore channel structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If fluff pulp is used in hygiene products containing super absorbent polymer particles, then the absorber can maintain shape and fasten particles, but the product becomes thick and has poor wearability
Solution Approach 1:
The patent extracts and removes fluff pulp from the absorber structure, replacing it with a foam-stabilized hydrogel polymer network that provides structural support without the bulk of traditional pulp materials
Solution Approach 2:
The patent introduces a porous foam structure stabilized by ionic polymeric binders, creating an open-cell network that maintains absorber shape and integrity while minimizing thickness through controlled pore formation
2Stability of the object's composition
If fluff pulp is used in hygiene products, then super absorbent polymer particles can be fastened, but manufacturing costs increase
Solution Approach 1:
The patent merges the fastening function with the foam structure itself, where ionic polymeric binders simultaneously provide particle attachment and foam stabilization, eliminating the need for separate fluff pulp components
Solution Approach 2:
The patent uses cost-effective ionic polymeric binders and foam stabilizers that can be applied in simple coating or mixing operations, replacing expensive fluff pulp with more economical materials while maintaining particle fastening capability
3Strength
If fluff pulp is used in hygiene products, then absorber structure is maintained, but wearer's skin becomes sweaty
Solution Approach 1:
The patent creates a highly porous foam structure with controlled pore sizes that facilitate air circulation and moisture evaporation, allowing the absorber to maintain structural integrity while improving breathability and reducing skin sweatiness
Solution Approach 2:
The patent develops a composite foam-hydrogel structure combining foam stabilizers, ionic polymeric binders, and super absorbent polymer particles, creating a material that simultaneously provides structural support and enhanced透气性
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 resulting super absorbent polymer sheet exhibits improved absorption rate and permeability, serving as a pulpless absorber with enhanced physical properties and reduced material costs.
Implementation Method 1
preparing a hydrogel polymer by thermal polymerization or photopolymerization of the monomer composition
Implementation Method 2
preparing a hydrogel polymer by thermal polymerization or photopolymerization of the monomer composition
Implementation Method 3
the super absorbent polymer sheet prepared according to the preparation method of the present disclosure has an open pore channel structure in which pores are connected to each other, so that absorption of water by capillary pressure is possible
Data Source
AI summary
The present disclosure relates to a preparation method for a super absorbent polymer sheet and a super absorbent polymer sheet prepared therefrom. According to the preparation method of the present disclosure, a porous super absorbent polymer sheet can be prepared by a simplified process.