Tissue paper product and tissue paper product package
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Moisture-retaining tissue paper products tend to bend easily due to their soft and moist nature, making them difficult to package and store like general-purpose products, which require stronger cardboard cases and specific packing orientations, and reducing the moisturizer content to enhance cushioning properties compromises their softness and smoothness.
Innovation Solution
A tissue paper product with 2-ply sheets containing a moisturizer mixture of glycerin and 1,3-propanediol, having specific dry tensile strength, paper thickness, and web compressive stress, allowing for packaging in the same manner as general-purpose products by optimizing the basis weight, thickness, and packaging structure to maintain softness and cushioning properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If tissue paper contains moisturizer to maintain softness and smoothness, then the web is moist and soft, but the web is likely to bend during storage and transportation
Solution Approach 1:
The patent applies parameter changes by optimizing the basis weight of 2-ply sheets to not less than 11.7 g/m² and controlling the moisturizer content to not less than 1.0 g/m². This specific parameter combination allows the tissue paper to maintain softness and smoothness while achieving sufficient cushioning properties to prevent bending during storage and transportation.
2Stability of the object's composition
If moisture-retaining tissue products are packed with upper surface facing upward to prevent bending, then the web will not bend, but the cardboard case requires increased strength
Solution Approach 1:
The patent changes the packaging orientation parameter from the conventional upward-facing position to a horizontal position where the short side surfaces face in the top-bottom direction of the cardboard case. Combined with the improved web strength from optimized 2-ply sheets, this allows standard cardboard case strength to be used while maintaining web stability.
Solution Approach 2:
The patent inverts the conventional packaging orientation for moisture-retaining tissue products. Instead of placing the upper surface facing upward, the products are packed with short side surfaces facing upward, which unexpectedly provides both web stability and compatibility with standard cardboard case strength requirements.
3Stability of the object's composition
If moisture-retaining tissue products are packed with upper surface facing upward, then the web will not bend, but the packing operation becomes troublesome due to direction change
Solution Approach 1:
The patent inverts the conventional packaging orientation from upward-facing to horizontal positioning with short side surfaces facing upward. This inverted approach simplifies the packing operation by eliminating the need for direction changes while maintaining web stability through the optimized 2-ply sheet structure.
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 product maintains excellent softness and smoothness while achieving improved cushioning properties, allowing for packaging and storage without bending, using a cardboard case with reduced strength requirements, thus reducing packaging costs and maintaining product quality.
Implementation Method 1
the web of moisture-retaining tissue paper is moist and soft due to the hygroscopic effect of a moisturizer
Implementation Method 2
enhance the cushioning properties of the web
Data Source
Figure 1
Figure 2
Figure 3
AI summary
[Problem] To provide a moisturizing tissue product that can be packaged in the same way as a non-moisturizing tissue product. [Solution] With this tissue paper product, in which a web obtained by folding and laminating in a pop-up configuration a plurality of sheets of tissue paper containing a moisturizing agent is stored in a rectangular-shaped paper box having an outlet on an upper surface thereof, the problem of the tissue paper is solved by this tissue paper product in which the number of plies is 2, the basis weight of 1 ply is 11.7 g/m2 to 13.0 g/m2, the paper thickness of the two plies is greater than 123 µm to 145 µm or less, the dry tensile strength in the longitudinal direction is greater than 273 cN/25 mm to 352 cN/25 mm or less, the dry tensile strength in the lateral direction is greater than 98 cN/25 mm to 132 cN/25 mm or less, the content of the moisturizing agent is 1.0 g/m2 to 2.5 g/m2, the compressive stress of the web is greater than 0.47 g/cm2 to less than 0.89 g/cm2, the ratio of the value obtained by multiplying the paper thickness and the number of sets to the volume of the web is 0.34 or more, the ratio of the volume of the web to the height of the paper box is 0.95 to less than 1.03, the ratio of the length of the tissue paper in the lateral direction to the length of the paper box in the longitudinal direction 0.84 or more, and the space volume ratio is 79 % or more.