Moisturizing Tissue Paper Composition for Strike-Through Prevention
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Solution Overview
Problem
Conventional moisturizing tissues with high moisture content face issues of 'strike through' and breakage when used for nasal blowing or wiping, and lack strength when used for object wiping, leading to anxiety about their durability and multi-use capabilities.
Innovation Solution
A tissue paper with a basis weight of 15.6 to 19.1 g/m², containing 17.0 to 22.0% polyol by mass, and having a moisture content of 10% or more, with specific tensile strength and compression energy values, ensuring both moistness and durability for facial and object-wiping uses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the moisture content of the tissue paper is increased to provide moistness and smoothness, then the texture quality is improved, but the tissue paper becomes prone to strike through and breakage
Solution Approach 1:
The patent applies parameter changes by precisely controlling the basis weight (15.6-19.1 g/m²), polyol content (17.0-22.0% by mass), and moisture content (10% or more) to achieve the optimal balance between texture quality and strength. This quantitative parameter optimization resolves the contradiction by finding the specific range where both moistness and durability coexist.
Solution Approach 2:
The patent uses composite materials by combining tissue paper with specific polyols (such as glycerin, propylene glycol, or 1,3-butylene glycol) to create a moisturizing tissue that maintains both high moisture content and adequate strength. The composite structure allows the tissue to exhibit both the desired texture properties and improved mechanical strength.
2Reliability
If the polyol content is increased to enhance moisturizing effect, then the moistness is improved, but the tissue paper structure becomes weaker and more prone to breakage
Solution Approach 1:
The patent resolves this contradiction by changing the parameter of polyol content to a specific range (17.0-22.0% by mass). This precise parameter control ensures sufficient moisturizing effect while preventing excessive polyol that would compromise structural integrity. The optimized polyol content maintains the right balance between softness and strength.
3Strength
If the basis weight is increased to improve strength, then the durability is improved, but the tissue paper becomes less soft and comfortable for facial use
Solution Approach 1:
The patent resolves this contradiction by optimizing the basis weight parameter within a narrow range (15.6-19.1 g/m²). This precise parameter selection achieves sufficient durability while preserving the softness and comfort needed for facial use. The optimized basis weight prevents the tissue from becoming too heavy or rigid.
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 excellent moistness, smoothness, and durability, allowing for multiple uses without 'strike through' or breakage, while maintaining high sensory evaluation scores for softness and firmness.
Implementation Method 1
A moisturizing tissue containing a moisturizer has a high moisture content due to a hygroscopic effect of the moisturizer
Data Source
AI summary
In various embodiments, the present invention provides a moisturizing tissue containing a polyol that has excellent strength while still providing a moist feeling and smoothness peculiar to the moisturizing tissue. The tissue paper has a basis weight of 15.6 to 19.1 g/m2, a paper thickness of 115 to 150 μm, a content of the polyol of 17.0 to 22.0 % by mass, a moisture content of 10% by mass or more, a dry tensile strength of 310 to 410 cN/25 mm in a longitudinal direction, a dry tensile strength of 120 to 160 cN/25 mm in a lateral direction, a wet tensile strength of 55 to 90 cN/25 mm in the lateral direction, and compression energy WC of 5.0 to 6.5 gf·cm/cm2 under a load of 50 g/cm2 using a KES test method.