Sanitary Tissue Free Fiber Structure for Measurable Softness
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current methods for quantifying the softness of sanitary tissue products, such as facial tissue and bath tissue, are subjective and time-consuming, and fail to provide a comprehensive understanding of free fiber metrics, which are crucial for determining product quality and consumer perception of softness.
Innovation Solution
The development of sanitary tissue products with increased free fiber numbers through the use of patterned molding members that impart three-dimensional patterns during the papermaking process, enhancing the product's softness without significantly increasing lint, thereby improving consumer satisfaction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual optical counting method is used to measure free fibers, then subjective softness assessment can be obtained, but the measurement process is time-consuming (60-90 minutes per analysis) and prone to human error
Solution Approach 1:
The patent replaces the manual optical counting method with an automated image analysis system using digital imaging and computer-based processing. The system captures images of the tissue product and automatically counts free fibers using software algorithms, eliminating human subjectivity and reducing analysis time from 60-90 minutes to a significantly shorter automated process while maintaining or improving measurement precision.
2Measurement precision
If compressibility testing is used to demonstrate softness, then scientific measurement is obtained, but the results are not easily understood by average consumers
Solution Approach 1:
The patent creates a visual copy or representation of the free fiber structure through high-magnification imaging that consumers can directly observe. Instead of presenting abstract compressibility data, the system produces visual evidence of free fibers that correlates with consumer perception of softness, making the measurement results intuitively understandable while maintaining scientific rigor.
3Productivity
If traditional papermaking process is used, then production efficiency is maintained, but the product does not achieve sufficient free fiber numbers for enhanced softness
Solution Approach 1:
The patent modifies papermaking process parameters, specifically introducing patterned molding members with specific geometric patterns (such as raised dots or lines) that physically disrupt fiber mat formation during the papermaking process. This controlled disruption increases free fiber numbers and enhances softness while maintaining production efficiency, as the changes are integrated into the existing papermaking workflow rather than requiring separate processing steps.
Data Source
AI summary
Sanitary tissue products that exhibit novel free fiber numbers compared to known sanitary tissue products as measured according to the Free Fiber Test Method described herein, and methods for making same, are provided.