Incontinence Diaper Rear Side Portions Segmented Folding
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Solution Overview
Problem
T-shaped disposable incontinence diapers face issues with high tensile forces during placement, leading to potential tearing or severing of side portions due to uncoordinated handling and production challenges, which are less prevalent in belt diapers with different kinematics.
Innovation Solution
The rearward side portions are folded onto themselves about two longitudinal axes, with a non-elongatable outer region for easier handling and a partially non-elongatable inner region, allowing secure gripping and simplified release, and are fixed using adhesives or ultrasonic welding for improved manageability and reduced elastic compromise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the rearward side portions are made elastically elongatable in the transverse direction to enable overlap with the front region, then the diaper can be closed on the external side of the front region, but high tensile forces are introduced into the side portions and main diaper part during placement, leading to potential tearing or severing
Solution Approach 1:
The rearward side portions are divided into multiple part-regions with different elongation properties. The outboard part-region is substantially non-elongatable while the inward part-region is elastically elongatable, creating segmented functional zones that distribute forces differently during placement and closing operations
Solution Approach 2:
Different regions of the rearward side portions are assigned different mechanical properties: the outboard part-region has substantially non-elongatable characteristics for structural stability, while the inward part-region has elastically elongatable characteristics for flexibility and overlap capability, optimizing both strength and ease of operation in their respective locations
2Ease of operation
If the rearward side portions are made substantially non-elongatable in the outboard part-region for easier handling and gripping, then handling and gripping are improved, but the ability to overlap with the front region is reduced
Solution Approach 1:
The rearward side portions are segmented into an outboard part-region that is substantially non-elongatable for handling stability and an inward part-region that is elastically elongatable for overlap capability, allowing both handling ease and adaptability to be achieved in different zones
Solution Approach 2:
The outboard part-region is configured with substantially non-elongatable properties to provide stable gripping surfaces, while the inward part-region maintains elastically elongatable properties to enable the necessary overlap with the front region, with the inward region comprising at least 50% of the total area
3Ease of operation
If the rearward side portions are folded onto themselves about two longitudinal axes with fixed part-regions, then handling and gripping are improved and release is simplified, but the structural complexity increases
Solution Approach 1:
The rearward side portions are pre-folded onto themselves about two longitudinal folding axes during manufacturing, with part-regions fixed in the folded configuration using adhesives or ultrasonic welding. This preliminary folding action creates a compact, easy-to-handle structure that automatically unfolds during use without requiring complex mechanisms
Solution Approach 2:
Instead of using complex mechanical folding mechanisms or adjustable structures, the patent uses simple adhesive bonds or ultrasonic welds to fix the folded part-regions, replacing complex mechanical systems with simpler chemical or thermal bonding methods that achieve the same structural organization
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 configuration enhances the handling and gripping of side portions, reduces the risk of tearing, and allows for cost-effective production by distributing tensile forces more uniformly, thereby improving the durability and ease of use of T-shaped diapers.
Implementation Method 1
within this extent (Q) are elastically elongatable in the transverse direction and to this end have an elastic or elasticized region that extends in the transverse direction and in the longitudinal direction
Implementation Method 2
fixed using adhesives or ultrasonic welding for improved manageability and reduced elastic compromise
Implementation Method 3
fixed using adhesives or ultrasonic welding for improved manageability and reduced elastic compromise
Data Source
AI summary
The invention relates to an incontinence diaper (2) with a main part (4), which comprises a front region (12), a rear region (16), and a crotch region (20) arranged between the front region and the rear region, and with rear lateral sections (22) which are joined to the rear region (16) on both sides, which extend outwards in the transverse direction (10) of the incontinence diaper (2) over the rear lateral longitudinal edges (18) of the main part (4), and each of which has at least one closure means (28), whereas no lateral sections (22) are joined to the front region (14). Each of the rear lateral sections (22) can be placed around the body of the user in order to close the incontinence diaper (2) and can be brought into overlapping arrangement with a front region (12) exterior, to which the lateral sections can then be removably adhered via the respective closure means (28). The rear lateral sections (22) have an extension (Q) in the transverse direction (10) over the respective rear lateral longitudinal edge (18) and an elastic or elasticized region (42) which extends in the transverse direction (10) and in the longitudinal direction (8). The invention is characterized in that the rear lateral sections (22) are folded together about at least two lateral section folding axes (46, 48) running in the longitudinal direction (8) by the manufacturer, and folded together sub-regions (50, 52, 54) of the rear lateral sections (22) are defined and delimited by means of the lateral section folding axes (46, 48). An outer sub-region (54) in the transverse direction (10) is designed to be substantially unstretchable, and at least 50% of the surface of a sub-region (52) which adjoins the outer sub-region (54) inwards is unstretchable starting from the outer folding axis (48) running in the longitudinal direction.