Tissue paper material and tissue paper product
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Tissue paper products face challenges in achieving a balance between strength and softness, and there is a desire to reduce the consumption of wood fibers due to rising costs and environmental concerns, while existing alternatives with non-wood fibers do not easily replicate the physical properties of wood fiber-based products.
Innovation Solution
Incorporating non-wood cellulose pulp fibers, specifically those with high hemicellulose content and low lignin, in tissue paper materials to enhance strength and softness, and using these fibers in combination with hardwood and softwood fibers to produce tissue paper products with improved properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If non-wood fibers are used to reduce wood fiber consumption, then environmental sustainability and cost are improved, but the physical properties such as strength and softness deteriorate
Solution Approach 1:
The patent uses composite materials by combining non-wood cellulose pulp fibers with wood fibers (hardwood and softwood) in specific ratios. This composite approach allows the tissue paper to benefit from the environmental and cost advantages of non-wood fibers while maintaining the strength and softness properties provided by wood fibers. The synergistic combination resolves the contradiction between sustainability and physical performance.
Solution Approach 2:
The patent changes the compositional parameters of the tissue paper by controlling the specific ratios of non-wood fibers, hardwood fibers, and softwood fibers. By optimizing these parameters, the invention achieves a balance where non-wood fiber content is sufficient to reduce environmental impact and cost, while wood fiber content remains adequate to maintain required strength and softness properties.
2Quantity of substance
If non-wood cellulose pulp fibers are used to reduce wood fiber reliance, then cost and environmental concerns are addressed, but the ability to replicate physical properties of wood fiber-based products deteriorates
Solution Approach 1:
The invention creates a composite fiber system where non-wood cellulose pulp fibers serve as a partial substitute for wood fibers, reducing wood fiber consumption. The composite structure leverages the absorbency benefits of non-wood fibers while using wood fibers to provide the mechanical strength and structural integrity needed to replicate the physical properties of traditional wood-based tissue paper.
Solution Approach 2:
The patent applies local quality by assigning different functional roles to different fiber types within the tissue paper. Non-wood fibers are positioned to provide absorbency and bulk, while wood fibers are utilized for strength and structural properties. This functional differentiation allows the product to achieve desired physical properties without relying solely on wood fibers.
3Strength
If tissue paper strength is increased, then tensile strength is improved, but softness deteriorates
Solution Approach 1:
The composite fiber composition allows the tissue paper to achieve both high tensile strength and softness simultaneously. The different fiber types contribute different properties: wood fibers provide tensile strength while non-wood cellulose pulp fibers contribute to softness and bulk. This material composition resolves the contradiction between strength and softness that typically exists in single-fiber systems.
Solution Approach 2:
The invention applies local quality by creating regions with different fiber compositions and properties within the tissue paper structure. Areas with higher wood fiber content provide strength, while areas with higher non-wood fiber content provide softness. This spatial differentiation of fiber properties allows the overall product to exhibit both high strength and softness characteristics.
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 use of non-wood cellulose pulp fibers achieves a balance between strength and softness in tissue paper products, offering improved tensile strength and absorbency while reducing the reliance on wood fibers, thus addressing environmental and cost concerns.
Implementation Method 1
non-wood cellulose pulp fibres being present in an amount of at least 10% by dry weight of the non-wood tissue ply
Implementation Method 2
specifically those with high hemicellulose content and low lignin
Data Source
AI summary
The present disclosure relates to a single-ply tissue paper material having a basis weight less than 40 gsm and a GMT tensile strength of at least 60 N/m, comprising a non-wood tissue ply, comprising non-wood cellulose pulp fibres being present in an amount of at least 10% by dry weight of the of the non-wood tissue ply. The disclosure also relates to a single-ply tissue paper product and to a multi-ply tissue paper product comprising at least one non-wood tissue ply.