Differential Speed Forming Members for Web Deformation
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Solution Overview
Problem
Existing methods for mechanically deforming materials to form deformed web materials lack efficiency and versatility, particularly in creating structured web components with specific properties for absorbent and packaging applications.
Innovation Solution
The method involves using intermeshing forming members that move at different surface speeds to deform precursor webs, creating deformed web materials with specific structures such as apertures, protrusions, and depressions, which can be used in absorbent articles and packaging materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional single-speed forming members are used to deform materials, then the process is simple to operate, but the manufacturing precision and versatility of deformed web materials are limited
Solution Approach 1:
The patent applies the dynamics principle by making the forming members operable at different surface speeds rather than a fixed single speed. The first and second forming members can be operated at different surface speeds to deform the web material in different directions, creating three-dimensional deformations. This dynamic speed variation enables precise control over the deformation process while maintaining operational flexibility.
2Adaptability or versatility
If intermeshing forming members operating at different surface speeds are used, then manufacturing precision and structural versatility are improved, but the device complexity increases
Solution Approach 1:
The patent applies the universality principle by designing the forming members to perform multiple functions: they can deform the web in the machine direction, cross direction, or both simultaneously by adjusting surface speeds; they can create various three-dimensional structures including protrusions, depressions, and apertures; and they can process different types of web materials. This multi-functionality achieves high versatility without requiring multiple separate processing systems.
3Manufacturing precision
If multiple deformation cycles are applied to achieve desired web structure, then manufacturing precision improves, but productivity decreases
Solution Approach 1:
The patent applies the preliminary action principle by performing multiple deformation actions simultaneously in a single pass through the forming members. By operating the first and second forming members at different surface speeds, the web material receives deformations in multiple directions at once rather than requiring sequential processing. This preliminary multi-directional deformation achieves high manufacturing precision while maintaining high productivity.
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
This approach enables the production of web materials with enhanced structural properties, improved fluid acquisition, and visual appeal, suitable for various applications including absorbent products and packaging, by effectively stretching and shaping the materials in multiple directions.
Implementation Method 1
passing the precursor web through a pair of intermeshing forming members comprising a first forming member and a second forming member that are moving at different surface speeds, wherein one of the first forming member and second forming member moves at a slower surface speed than the other
Data Source
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AI summary
Methods of mechanically deforming a material are disclosed. The methods of mechanically deforming a material involve using forming members that are moving at different surface speeds relative to each other to form deformed web materials.