TAD Fabric Release Composition for Lower Tissue Adhesion
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Solution Overview
Problem
In tissue production processes, particularly through air drying (TAD), the adhesion of tissue fibers to the fabric surface is a significant issue, leading to complications in tissue release and transfer, which existing treatments like hydrophobic materials and surfactant combinations do not adequately address.
Innovation Solution
A composition comprising hydrophobic quaternary amines, such as low molecular weight hydrophobic imidazolines and aminoamides, combined with other hydrophobic components like mineral oils and non-ionic surfactants, is applied to the TAD fabric surface to reduce adhesion and enhance tissue release.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If hydrophobic materials (silicone oil, mineral oil, polyalphaolefins) are used to treat TAD fabric, then tissue release is improved, but the application process becomes complex and straightforward mixing with surfactants is required
Solution Approach 1:
The patent combines hydrophobic materials and surfactants into a single integrated composition that can be applied directly to TAD fabric without separate mixing steps. The composition contains both the hydrophobic release agents and surfactants in predetermined proportions, simplifying the application process while maintaining effective tissue release.
Solution Approach 2:
The patent prepares the composition in advance with pre-determined ratios of hydrophobic materials and surfactants, so that when applied to the TAD fabric, the components are already in the correct proportions and mixed state, eliminating the need for on-site mixing and application complexity.
2Ease of operation
If surfactants are added to hydrophobic materials, then emulsification and spread efficiency are improved, but the composition complexity increases
Solution Approach 1:
The patent optimizes the concentration ratios of surfactants to hydrophobic materials within specific ranges (surfactants at 5-50 wt%, hydrophobic materials at 50-95 wt%). By controlling these parameters within defined boundaries, the composition achieves effective emulsification and spread while maintaining formulation simplicity and manufacturing feasibility.
3Reliability
If fabric release agents are applied to fabric surface, then tissue separation is improved, but fiber deposits on fabric surface and adhesion complications increase
Solution Approach 1:
The patent uses surfactants as intermediary substances that facilitate the separation between tissue fibers and fabric surface. The surfactants reduce surface tension and prevent direct fiber-to-fabric adhesion, enabling clean release without fiber deposits or adhesion complications.
Solution Approach 2:
The patent replaces mechanical separation methods with chemical action. Instead of relying on physical forces to separate tissue from fabric, the composition uses chemical surfactants to reduce adhesion forces at the molecular level, achieving separation without mechanical stress that could cause fiber deposits.
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 proposed composition significantly reduces tissue adhesion to TAD fabric surfaces, improving the release process by up to 47.17% compared to individual components, demonstrating enhanced performance over traditional hydrophobic materials like mineral oils and alpha olefins.
Implementation Method 1
The method comprises treating the surface of a fabric in structured sheet making applications of a tissue machine using compositions containing hydrophobic quaternary amines
Implementation Method 2
combining the quaternary amines with other hydrophobes and surfactants
Data Source
AI summary
The current invention provides for a composition and method for the improvement of fabric release in applications such as tissue and towel making processes. The method comprises treating the surface of a fabric in structured sheet making applications using compositions containing hydrophobic quaternary amines in combination with other hydrophobes and surfactants.