Refastenable Pant Absorbent Article Side Panel Retention
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Solution Overview
Problem
Existing absorbent sanitary articles with pre-fastened and refastenable side panels face issues due to temporary welding, which limits material choices, can damage the material, and may result in incomplete fastening during manufacturing, especially when the welding strength is not optimal.
Innovation Solution
The use of barrier leg cuffs with outwards-opening pockets to retain folded side panels, eliminating the need for temporary welds and allowing refastenable fastening elements to engage through contact pressure, ensuring secure fastening and easy opening.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If temporary welding is used to retain folded side panels, then the side panels are held in position during manufacturing, but the material choice is limited and material damage may occur
Solution Approach 1:
A temporary retention element is introduced as an intermediary component between the side panels and the manufacturing process. This separate element performs the retention function without requiring direct welding to the side panels, thereby protecting material integrity while maintaining reliability during manufacturing.
Solution Approach 2:
The retention function is separated from the side panel material itself. Instead of welding directly to the panel material, the system uses distinct temporary retention elements that can be applied and removed independently, allowing various material choices for the side panels without compromising the retention mechanism.
2Reliability
If temporary welding is used to retain folded side panels, then the side panels are secured during manufacturing, but material lacerations may occur
Solution Approach 1:
The temporary retention element acts as a mediator that provides the necessary retention force without direct welding contact with the side panels, eliminating the harmful effect of welding-induced material damage while maintaining secure retention during manufacturing.
Solution Approach 2:
The system converts the potential harm of welding into a beneficial temporary retention mechanism that does not contact the side panels. The welding is applied only to the retention element itself, transforming a potentially damaging process into a harmless one for the side panel materials.
3Object-affected harmful factors
If temporary welding with weak peel strength is used, then material damage is reduced, but the side panels may open during manufacturing
Solution Approach 1:
The temporary retention element provides a dedicated mechanism for securing side panels during manufacturing with optimized retention strength. This intermediary component can be designed with appropriate adhesion or mechanical retention properties without compromising the side panel materials, ensuring reliable retention throughout the manufacturing process.
4Shape
If inward folding of side panels is used, then pre-fastened configuration is achieved, but fastening elements must be pressed together under pressure
Solution Approach 1:
The side panels are pre-folded into the desired configuration before the final fastening operation. This preliminary folding action positions the fastening elements in optimal alignment, so that when the panels are brought together, the fastening elements engage more easily without requiring excessive pressing force.
Data Source
AI summary
Pre-fastened and refastenable pant-type absorbent sanitary article, comprising: - a central body (12) having two opposite side edges (14) and including: a topsheet (22) having an inner surface (26), a backsheet (24), and an absorbent core (20) sandwiched between the topsheet (22) and the backsheet (24), wherein the topsheet (22) and the backsheet (24) are welded together along a perimeter of the central body (12), and wherein the central body (12) is folded along a transverse folding line (A) orthogonal to said side edges (14), - at least two side panels (28, 30) extending from respective lateral edges (14) of said central body (12), each of said side panels (28, 30) having at least one folded portion (28a, 30a, 30b) which extends inwards from the respective side edge (14) and a fastening element (40, 42) of an openable and refastenable fastening device (38), and - at least one strip of sheet material (44, 180) fixed on said inner surface (26) of said topsheet (22), wherein said at least one strip of sheet material (180) has respective outer side portions (50, 180) detached from the inner surface (26) of the topsheet (22) and forming laterally outwards-opening pockets (52) that receive and retain the respective inner edges (54, 56) of the respective folded portions (28a, 30a, 30b) of the side panels (28, 30).