2-Ply Tissue Composition for Moist Yet Non-Sticky Smoothness
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Solution Overview
Problem
Conventional moisturizing tissue paper struggles to simultaneously achieve a high level of both 'moist texture' and 'smooth texture' while maintaining a soft and non-sticky feel, often compromising on one quality when enhancing another.
Innovation Solution
A 2-ply tissue paper with a basis weight of 11.0 to 12.5 g/m² and thickness of 102 to 129 µm, containing 1.8 to 4.6 g/m² of a chemical mixture with glycerin and 1,3-propanediol in a total amount of 83.7 to 94.9 mass% and a mass ratio of 1:0.36 to 1:4.94, which maintains dry and wet tensile strengths to ensure strength and reduce stickiness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the content of moisturizer is increased to improve moist texture, then moist texture is enhanced, but sticky texture is also increased and smooth texture is reduced
Solution Approach 1:
The patent changes the chemical composition parameters of the moisturizer by specifying a particular ratio of glycerin to 1,3-propanediol (1:0.36 to 1:4.94) and controlling the total amount (1.8 to 4.6 g/m²). This parameter optimization allows achieving moist texture while minimizing sticky texture and maintaining smooth texture.
Solution Approach 2:
The patent uses a composite moisturizer system comprising multiple chemical agents (glycerin and 1,3-propanediol in specific ratios) rather than a single substance. This composite approach allows balancing multiple texture properties simultaneously, resolving the contradiction between moist texture and sticky texture.
2Quantity of substance
If the content of moisturizer is increased to improve moist texture, then moist texture is enhanced, but smooth texture is reduced
Solution Approach 1:
The patent optimizes the parameters of moisturizer content (1.8 to 4.6 g/m²) and composition (glycerin to 1,3-propanediol ratio) to achieve a balance where both moist texture and smooth texture are improved simultaneously, rather than one improving at the expense of the other.
Solution Approach 2:
By using a composite moisturizer system with specific ratios of glycerin and 1,3-propanediol, the patent achieves synergistic effects that simultaneously enhance moist texture and maintain smooth texture, resolving the contradiction between these two properties.
3Quantity of substance
If excessive moisturizer is contained to improve soft texture and moist texture, then these textures are enhanced, but resilience of paper is lowered
Solution Approach 1:
The patent changes the parameter of moisturizer content to an optimized range (1.8 to 4.6 g/m²) rather than using excessive amounts. This parameter optimization ensures that soft texture and moist texture are improved while resilience of the paper is maintained.
4Quantity of substance
If basis weight is reduced to improve smooth texture and moist texture, then these textures are enhanced, but tensile strength is reduced
Solution Approach 1:
The patent changes the basis weight parameter to a specific low range (11.0 to 12.5 g/m²) and compensates for the strength reduction through optimized moisturizer composition and controlled tensile strength parameters, achieving both smooth texture and adequate strength.
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 tissue paper achieves a high level of 'moist texture' and 'smooth texture' while limiting 'sticky texture' and maintaining 'soft texture', providing excellent tactile experience and strength, even when used with wet hands.
Implementation Method 1
The moisturizing tissue paper is more excellent in 'soft texture,' 'smooth texture' and a 'moist texture' due to the effect of a moisturizer than those of the non-moisturizing tissue paper
Implementation Method 2
In conventional moisturizing tissue paper, 'soft texture' and a 'moist texture,' are improved by raising water retention properties in paper because of the moisture absorption action of the moisturizer
Data Source
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AI summary
To provide tissue paper with an excellent "moist texture" and high "smooth texture." 2-ply tissue paper is characterized by the basis weight per ply being less than 13 g/m2, the 2-ply paper thickness being less than 135 µm, and containing above 1.4 g/m2 and less than 4.9 g/m2 of chemical agent which contains glycerin and 1,3-propanediol in a total amount of 83 mass% or more, wherein the mass ratio of glycerin and 1,3-propanediol is above 1 : 0.18 and less than 1 : 5.11.