Lyocell Nonwoven Pouch for Rapid Flavor Release
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Solution Overview
Problem
Existing oral pouched snuff products experience delayed and diminished release of flavors and nicotine due to the pouch material, leading to an unsatisfactory initial taste experience, particularly in non-post-moisturized products, and require improved materials to meet consumer demands for rapid flavor and nicotine release.
Innovation Solution
A saliva-permeable pouch made from a dry-laid nonwoven comprising staple fibres of regenerated cellulose, specifically lyocell staple fibres, with a binder of copolymers of vinyl acetate and acrylic acid ester, providing a basis weight of up to 25 g/m², high air permeability, and enhanced tensile strength, which allows for a more rapid and stronger taste experience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a standard viscose nonwoven pouch material is used, then the pouch provides sufficient structural integrity and heat-sealing capability, but the release of flavors and nicotine is delayed and diminished
Solution Approach 1:
The patent changes the physical parameters of the pouch material by reducing basis weight from standard viscose levels to 15-25 g/m² and controlling fiber orientation to achieve more rapid flavor and nicotine release while maintaining adequate pouch strength through optimized material composition
Solution Approach 2:
The patent uses a composite nonwoven material combining regenerated cellulose fibers (lyocell or viscose) with acrylic polymer binder in specific ratios (70-90% fibers, 10-30% binder) to balance permeability for flavor release with structural integrity for pouch functionality
2Quantity of substance
If the pouch material basis weight is reduced to increase flavor release, then the taste experience improves, but the pouch strength and integrity may be compromised
Solution Approach 1:
The patent optimizes the basis weight parameter to a specific range of 15-25 g/m², which is low enough to allow rapid flavor and nicotine release but high enough to maintain sufficient pouch strength when combined with the optimized fiber-binder composition
Solution Approach 2:
The patent employs a composite structure with 70-90% regenerated cellulose fibers providing permeability for flavor release and 10-30% acrylic polymer binder providing structural strength, creating a material that simultaneously achieves both objectives
3Illumination intensity
If a dry-laid nonwoven with lyocell fibres and low basis weight is used, then rapid flavor release and transparency are achieved, but the manufacturing complexity increases
Solution Approach 1:
The patent specifies particular parameter ranges for the dry-laid nonwoven including basis weight (15-25 g/m²), fiber composition (70-90% regenerated cellulose), and binder content (10-30%) to achieve the desired transparency and flavor release while maintaining manufacturability within established production capabilities
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 solution provides a more transparent and appealing product with minimal discoloration, offering a rapid taste experience and stronger flavor compared to standard viscose nonwovens, while maintaining pouch integrity and strength.
Implementation Method 1
a saliva-permeable pouch enclosing the filling material... allowing saliva to pass into the interior of the pouch and allowing flavours and nicotine to diffuse from the tobacco material into the consumer's mouth
Implementation Method 2
a binder of copolymers of vinyl acetate and acrylic acid ester... acts as binder in the nonwoven material
Data Source
Figure 1~3
AI summary
The invention relates to an oral pouched product, such as an oral pouched smokeless tobacco product, comprising a filling material and a pouch enclosing the filling material, the pouch comprising a dry-laid nonwoven, the dry-laid nonwoven comprising staple fibres of regenerated cellulose and a binder, wherein the staple fibres of regenerated cellulose comprises lyocell staple fibres and the dry-laid nonwoven has a basis weight of at most 25 g/m2, such as within the range of from 20 g/m2 to 25 g/m2 or from 20 g/m2 to 23 g/m2.