Disposable Towel Surface Pockets for Bulk and Absorbency
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Solution Overview
Problem
Existing disposable paper products, such as tissues and paper towels, often lack sufficient bulk structure, which compromises their softness and absorbency, despite advancements in manufacturing methods like through air drying and structured fabrics.
Innovation Solution
A disposable tissue or paper towel product with unique surface topography features large volume pockets on its outer surface, achieved through a structured fabric and specific manufacturing processes like through air drying, uncreped through air drying, and advanced tissue molding systems, ensuring enhanced softness and absorbency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of stationary object
If conventional manufacturing methods are used, then production cost and energy consumption are controlled, but bulk structure and surface smoothness are insufficient
Solution Approach 1:
The patent introduces large volume surface depressions (pockets) with depths of 0.05-0.2 inches and volumes greater than 0.4 mm³, transforming the traditional two-dimensional surface into a three-dimensional structure. This dimensional change creates bulk structure without significantly increasing basis weight, resolving the contradiction between bulk volume and manufacturing simplicity.
Solution Approach 2:
The structured fabric used in the through air drying process creates a porous network with interconnected voids and pockets. This porous structure provides bulk and absorbency while maintaining breathability and softness, achieving enhanced bulk structure through material architecture rather than increased density.
2Strength
If basis weight is increased to improve softness, then surface smoothness improves, but the product becomes heavier and less efficient
Solution Approach 1:
The patent creates localized pockets of high bulk (0.05-0.2 inches deep) distributed across the surface, concentrating the softness-enhancing structure where it is most needed for tactile comfort. The majority of the towel maintains lower basis weight, achieving softness without uniformly increasing material consumption.
Solution Approach 2:
By creating three-dimensional pockets with volumes greater than 0.4 mm³, the patent achieves softness through vertical dimension (depth) rather than horizontal dimension (surface area coverage). This allows the towel to feel softer without requiring more material per unit area.
3Volume of stationary object
If conventional drying methods are used, then energy consumption is lower, but bulk structure and surface topography are insufficient
Solution Approach 1:
The structured fabric is pre-configured with a specific weave pattern and void distribution before the drying process. This preliminary structuring allows the web to form pockets and bulk structure during the drying process itself, rather than requiring post-processing compression or formation steps, achieving bulk structure efficiently in one pass.
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 product achieves superior softness and absorbency by creating a thicker, more flexible web with unique surface topography, improving user experience while maintaining competitive production costs and energy efficiency.
Implementation Method 1
through air drying process comprises transferring a web that forms the at least one of the two plies from a forming wire to the structured fabric at a 5% or more speed differential
Implementation Method 2
an exposed outer surface of at least one of the two plies comprising a plurality of pockets, the plurality of pockets having an average volume greater than 0.4 mm³
Implementation Method 3
the at least two plies are laminated together with heated adhesive
Data Source
AI summary
A disposable tissue or paper towel product including at least two plies, an exposed outer surface of at least one of the two plies comprising a plurality of pockets, the plurality of pockets having an average volume greater than 0.4 mm3 and an average surface area of 2.5 mm2, wherein the product is formed using a structured fabric with both a left handed and right handed twill pattern that reverses itself periodically.