Moisturizer-Free Two-Ply Tissue Paper for Softness and Versatility
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Solution Overview
Problem
Moisturizer-uncoated all-purpose tissue paper struggles to achieve high sensory evaluation values for softness and smoothness while maintaining strength and avoiding skin damage, particularly at a low price.
Innovation Solution
A two-ply tissue paper with specific properties, including a basis weight of 10.0 to 16.0 g/m², paper thickness of 120 to 200 µm, softness of 1.0 or less, and dry tensile strength of 240 to 300 cN/25 mm, manufactured using pulp fibers, polyamide epichlorohydrin as a wet paper strengthening agent, and a combination of polyacrylamide and cationic starch as dry paper strengthening agents, along with fatty acid ester and fatty acid amide compounds as softeners.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If moisturizer is applied to tissue paper to enhance soft feeling and smoothness, then sensory evaluation values improve, but the tissue becomes specialized for nose blowing and facial purposes only, losing versatility for wiping dirt and dust
Solution Approach 1:
The invention changes the fundamental parameter of moisturizer content from 'present' to 'absent', creating all-purpose tissue without polyol coating. By adjusting other parameters like basis weight (10.0-16.0 g/m² per ply), paper thickness (120-200 µm), and using specific strengthening agents, the tissue achieves high sensory evaluation values while maintaining versatility for multiple uses including nose blowing, facial wiping, and dirt removal
2Adaptability or versatility
If all-purpose tissue paper is made without moisturizer to maintain versatility and low price, then cost and versatility are maintained, but soft feeling and smoothness are insufficient
Solution Approach 1:
The invention achieves soft feeling without moisturizer by precisely controlling physical parameters: basis weight of 10.0-16.0 g/m² per ply, paper thickness of 120-200 µm, softness of 1.0 or less, and average dynamic friction coefficient of 1.40-1.65. These parameter adjustments enable all-purpose tissue to provide excellent softness and smoothness while remaining moisturizer-free
Solution Approach 2:
The invention uses composite material strategies by combining specific pulp fiber compositions with chemical strengthening agents (polyamide epichlorohydrin, polyacrylamide, cationic starch) and softening agents (fatty acid ester and fatty acid amide compounds). This composite approach creates tissue with enhanced softness, strength, and smoothness without relying on moisturizer coating
3Quantity of substance
If all-purpose tissue paper is made without moisturizer to reduce cost, then price is reduced, but soft feeling and smoothness demanded by consumers are not achieved
Solution Approach 1:
The invention eliminates moisturizer substance while compensating for its softening effect through precise control of physical parameters (basis weight, thickness, softness) and chemical composition (strengthening and softening agents). This parameter optimization enables production of high-quality all-purpose tissue at lower cost by removing the moisturizer coating process while maintaining consumer-demanded softness and smoothness
4Quantity of substance
If tissue paper is made thinner to reduce material cost, then price is reduced, but strength to prevent breakage during nose blowing is insufficient
Solution Approach 1:
The invention optimizes the parameter balance between thickness and strength by setting paper thickness at 120-200 µm with basis weight of 10.0-16.0 g/m² per ply. This parameter combination, combined with dry tensile strength of 240-300 cN/25 mm for two-ply tissue, achieves cost-effective material usage while ensuring sufficient strength to prevent breakage during nose blowing and wiping operations
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 extremely high sensory evaluation values for softness and smoothness, minimizes skin burden during use, and prevents breakage, all while maintaining strength and affordability.
Implementation Method 1
polyamide epichlorohydrin as a wet paper strengthening agent
Implementation Method 2
a combination of polyacrylamide and cationic starch as dry paper strengthening agents
Implementation Method 3
fatty acid ester and fatty acid amide compounds as softeners
Data Source
Figure 1
AI summary
[Problem] To provide an all-purpose type tissue paper that is excellent in softness, smoothness, and strength. [Solution] This problem is solved by a two-ply tissue paper that does not have moisturizer applied thereon, that has a basis weight per ply of 10.0-16.0 g/m2, a paper thickness per two-ply of 120-200 µm, a softness of not more than 1.0, a dry tensile strength (T) in the MD direction of 240-300 cN/25mm, and an average dynamic friction coefficient of 1.40-1.65.