Paper Towel Lint Quantitation Method
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Solution Overview
Problem
Existing paper towel products tend to generate lint when used, which is undesirable and difficult to quantify, affecting their performance and consumer acceptance.
Innovation Solution
A method for quantitating paper towel lint involves preparing a sample, depositing lint onto a cleaned surface using a specific wiping pattern with directional changes, collecting the lint, and determining the amount collected, including measuring fiber length, width, and count to calculate the total fiber area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If chemical debonding agents are used to increase softness, then softness is improved, but lint and slough increase
Solution Approach 1:
The patent applies parameter changes by modifying the chemical composition and bonding characteristics of pulp fibers through controlled chemical treatments. This resolves the contradiction by adjusting fiber-to-fiber bond strength parameters to achieve softness while minimizing lint generation during use.
2Object-generated harmful factors
If efforts are made to reduce slough and lint, then lint generation is reduced, but bulk and softness are noticeably lost
Solution Approach 1:
The patent applies local quality by creating different bonding characteristics in different regions or aspects of the tissue structure. This allows certain areas to have stronger bonds (reducing lint) while other areas maintain softness and bulk, resolving the contradiction through spatially differentiated properties.
Solution Approach 2:
The patent uses composite materials by combining pulp fibers with specific chemical additives and treatments that create a multi-component structure. This composite approach enables simultaneous optimization of lint resistance and softness/bulk properties that cannot be achieved with single-material approaches.
3Measurement precision
If a method for quantitating lint is developed, then measurement capability is improved, but test complexity increases
Solution Approach 1:
The patent replaces complex mechanical measurement systems with optical detection methods. By using light interaction principles to detect and quantify lint on surfaces, the invention achieves precise measurement while simplifying the test procedure and reducing equipment complexity.
Data Source
AI summary
A method for quantitating the amount of lint shed from a paper towel, the method comprising: preparing a sample of paper towel to be analyzed; depositing lint from the sample onto a substantially lint-free surface by moving the sample thereupon in a specific pattern; collecting the lint deposited on the surface, wherein collecting the lint deposited on the surface comprises, substantially immediately upon depositing lint from the sample onto the surface, washing the deposited lint from the surface into a tared, cleaned, empty vessel; and determining the amount of collected lint.