Creping Paper Micro-Emulsion Release Agent
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Solution Overview
Problem
Current creping processes for producing crepe paper face challenges in achieving optimal adhesion and release properties on Yankee cylinders, often requiring complex compositions with multiple components, which can lead to coating buildup and inefficient creping operations.
Innovation Solution
A method involving the creation of a micro-emulsion of release and modifier agents, subjected to high pressure and shear, resulting in a particle size of 1 micron or less, which improves adhesion, release efficiency, and creping process effectiveness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple components (adhesives, release agents, modifiers, plasticizers) are used to control adhesion and hardness, then creping operation effectiveness is improved, but process complexity increases
Solution Approach 1:
The patent combines multiple functional components (adhesive, release agent, modifier, plasticizer) into a single integrated composition applied to the Yankee dryer surface. This unified approach maintains all necessary functions while simplifying the application process and reducing operational complexity compared to applying multiple separate components.
Solution Approach 2:
The composition applied to the Yankee dryer surface performs multiple functions simultaneously: providing adhesion for web transfer, controlling release during creping, adjusting hardness, and preventing buildup. This multi-functional composition eliminates the need for separate applications of different components.
2Strength
If composition hardness is increased to protect Yankee dryer surface, then surface protection is improved, but coating buildup occurs causing sheet breaks
Solution Approach 1:
The patent adjusts the hardness parameter of the composition to an optimal range that provides sufficient surface protection without being too hard to cause buildup. This involves selecting appropriate modifiers and plasticizers to achieve the right balance of hardness and flexibility in the coating.
Solution Approach 2:
The composition is designed to have varying properties at different stages: sufficiently hard when applied to protect the surface, but with controlled softening characteristics during operation to prevent buildup. The local properties are optimized for specific functional requirements at different times in the process.
3Ease of operation
If composition hardness is decreased for easier creping, then creping ease is improved, but surface protection capability is reduced
Solution Approach 1:
The hardness parameter of the composition is precisely controlled to fall within an optimal range that simultaneously provides surface protection and facilitates easy creping. This is achieved through careful selection and combination of modifiers and plasticizers that adjust the composition's mechanical properties.
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 micro-emulsion approach simplifies the creping process, enhances creped web properties, and maintains optimal adhesion and hardness, leading to improved handfeel and sheet properties while preventing coating buildup on the Yankee cylinder.
Implementation Method 1
treating the surface of a crepe fiber web and/or surface of a Yankee drum dryer or cylinder with compositions containing a combination of hydrophobes and surfactants
Implementation Method 2
treating the surface of a crepe fiber web and/or surface of a Yankee drum dryer or cylinder with compositions containing a combination of hydrophobes and surfactants
Data Source
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AI summary
The present invention provides for a method of producing a creped paper and the crepe paper products made using this method. The method includes treating the surface of a crepe fiber web and/or surface of a Yankee drum dryer or cylinder with compositions containing a combination of hydrophobes and surfactants and wherein these compositions have been subjected to physical treatments to reduce the mean particle size to about 1 micron (μm) or less.