Refastenable Side Seam Elastic Panel Cutting Process
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Solution Overview
Problem
Existing processes for creating refastenable side seams in hygienic absorbent articles are complex, prone to errors, and result in scrap material that complicates production, reduces wearability, and obscures the seam, often requiring expensive scrap removal units and compromising aesthetic quality.
Innovation Solution
A process and apparatus that supply and extend elastic panels with connecting elements, allowing for precise cutting to create retracted portions that enable direct connection without scrap, ensuring aesthetically pleasing and ergonomic seams without the need for dedicated scrap removal units.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If scrap material is kept on the articles to avoid removal operations, then production complexity is reduced, but wearability and aesthetic quality deteriorate
Solution Approach 1:
The patent extracts the harmful scrap material from the final product by implementing precise cutting operations that separate the scrap portion before it can affect the article's quality. The cutting unit is configured to cut the elastic panels at specific positions that isolate the scrap material, allowing it to be removed or excluded from the final article without compromising wearability or aesthetics.
2Ease of manufacture
If scrap removal units are added to the production apparatus, then wearability and aesthetic quality are improved, but device complexity and cost increase
Solution Approach 1:
The patent applies preliminary action by performing the cutting operation at the precise moment when the scrap material can be separated from the usable portion of the elastic panel. The cutting unit is positioned and configured to make the cut before the scrap would interfere with the article quality, eliminating the need for subsequent removal operations and avoiding the complexity of dedicated scrap removal units.
3Productivity
If conventional cutting methods are used, then production speed is maintained, but manufacturing precision deteriorates due to elastic panel retraction
Solution Approach 1:
The patent applies dynamics by configuring the cutting unit to account for the elastic nature of the panels. The cutting operation is performed with consideration for the elastic retraction that occurs after cutting, with the cutting position and timing dynamically adjusted to ensure that the final position of the elastic panel edges aligns precisely with the desired seam location despite the retraction effect.
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 solution simplifies the production of refastenable side seams, enhances wearability, and improves aesthetic appeal by eliminating hidden connecting elements, while avoiding the need for scrap removal units and ensuring precise operations.
Implementation Method 1
supplying the first elastic panel and the second elastic panel each comprising a first layer and a second layer between which at least one elastic element is comprised associated with the first layer and the second layer
Data Source
AI summary
A process and an apparatus for making a refastenable side seam of an hygienic absorbent article efficiently, without the need to remove scrap and which allows refastenable side seams to be obtained which are ergonomic, aesthetically pleasing, easily identifiable by the user and such that they do not reduce the wearability of the article. The disclosure also relates to an hygienic absorbent article provided with at least one refastenable side seam. The disclosure also relates to a process and an apparatus for carrying out one or more operations on elastic panels usable for making an hygienic absorbent article provided with at least one refastenable side seam.