Tissue paper
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Solution Overview
Problem
Conventional moisturizing tissue paper struggles to maintain both a high 'moist texture' and 'smooth texture' simultaneously, often compromising one for the other, and may become sticky or lose resilience with excessive moisturizer content.
Innovation Solution
A 2-ply tissue paper with a basis weight of 15 to 18 g/m², containing a chemical agent with a high percentage of glycerin and 1,3-propanediol in a specific mass ratio, optimized for dry and wet tensile strength to achieve both 'moist' and 'smooth' textures while limiting 'sticky' texture.
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 increased, 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 (above 1:0.04 and 1:5.58 or less). This parameter optimization allows the tissue paper to achieve high moist texture while controlling sticky texture, resolving the contradiction between moisturizer content and harmful sticky sensation.
Solution Approach 2:
The patent uses a composite moisturizer system combining glycerin and 1,3-propanediol in specific proportions. This composite material approach leverages the complementary properties of both substances: glycerin provides moisture retention while 1,3-propanediol contributes to smooth texture and reduces stickiness, thereby achieving both moist and smooth textures without excessive stickiness.
2Quantity of substance
If the content of moisturizer is increased to improve moist texture, then moist texture is increased, but smooth texture is not easily felt
Solution Approach 1:
The patent optimizes the chemical composition parameters by specifying glycerin and 1,3-propanediol in a total amount of 83.7 mass% or more with a controlled mass ratio. This precise parameter control ensures that the moisturizer provides sufficient moisture while maintaining surface smoothness, resolving the contradiction between moist texture and smooth texture.
Solution Approach 2:
The composite moisturizer system combining glycerin and 1,3-propanediol in specific proportions creates a synergistic effect where glycerin provides moisture retention and 1,3-propanediol enhances surface smoothness. This composite approach allows both moist and smooth textures to be achieved simultaneously without compromising either property.
3Quantity of substance
If excessive moisturizer is contained to improve moist texture, then moist texture is improved, but resilience of paper is lowered
Solution Approach 1:
The patent changes the chemical composition parameters by specifying glycerin and 1,3-propanediol in a total amount of 83.7 mass% or more with a controlled mass ratio. This optimized parameter configuration provides sufficient moisture retention while maintaining paper resilience, resolving the contradiction between moisturizer content and paper strength.
Solution Approach 2:
The composite moisturizer system of glycerin and 1,3-propanediol in specific proportions maintains paper resilience better than single-substance moisturizers. The balanced composition provides moisture retention while the specific ratio prevents excessive softening that would compromise paper strength and resilience.
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 'soft', 'smooth', 'moist', and 'sticky' texture quality characteristics, maintaining strength and feel across dry and wet states, enhancing user experience.
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 because of the moisture absorption action of the moisturizer
Data Source
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 15 to 18 g/m2, the 2-ply paper thickness being 135 to 160 μm, and containing 2.9 g/m2 or more and 8.0 g/m2 or less of chemical agent which contains glycerin and 1,3-propanediol in a total amount of 83.7 mass % or more, wherein the mass ratio of glycerin and 1,3-propanediol is 1:0.04 or more and 1:5.58 or less.