Absorbent Product Side Wall Leakage Prevention
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Solution Overview
Problem
Conventional absorbent products for light incontinence face issues with side leakage due to insufficient height of side wall parts, leading to leakage of excrement from the sides, particularly near the end portions.
Innovation Solution
The absorbent product features a unique design with side sheets that include a strip-like bonded part, a standing part, and a half standing part, where the half standing part is continuous from the standing part and not bonded to the main body part, with elastic members arranged to contract and form gathers, preventing side leakage by ensuring the side wall end parts stand up effectively and directing moisture back into the absorbent core.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the side wall end parts are directly bonded on the upper surface of the main body part, then the structure is simple and easy to manufacture, but the side wall parts cannot stand up sufficiently in the vicinity of the end portions, causing side leakage
Solution Approach 1:
The side wall end part is divided into three distinct regions: a bonded section for attachment, a half standing part that stands up from the main body part, and a standing part that is folded inward. This segmentation allows each region to perform its specific function - the bonded section provides secure attachment while the half standing and standing parts create the necessary height barrier to prevent side leakage at the end portions.
Solution Approach 2:
The side wall structure implements different configurations at different locations. The side wall parts in the middle section are directly bonded to the main body part for simplicity, while the side wall end parts incorporate the half standing part and standing part structure to provide sufficient height and prevent leakage. This local differentiation optimizes both ease of manufacture and leakage prevention.
2Reliability
If inner areas of side wall end parts are not bonded on the main body part to increase height, then the side wall parts stand up better, but elastic members cannot be properly disposed, impairing the standing up effect and causing side leakage
Solution Approach 1:
The side wall end part is segmented into bonded section, half standing part, and standing part, allowing the structure to achieve sufficient height for leakage prevention while maintaining proper attachment points for elastic members on the bonded section.
Solution Approach 2:
The half standing part acts as an intermediary element between the bonded section and the standing part. It provides the necessary transition that allows both the elastic members (attached to the bonded section) and the standing up function (achieved through the half standing and standing parts) to work effectively together.
3Device complexity
If elastic members are disposed between side wall end parts without extending into unbonded areas, then the structure is simpler, but the side wall parts do not contract sufficiently, leading to insufficient standing up and side leakage
Solution Approach 1:
The side wall end part structure segments the functionality: the bonded section provides attachment points for elastic members, while the half standing part and standing part provide the height necessary for leakage prevention. This segmentation allows elastic members to be properly disposed on the bonded section while the folded structure ensures sufficient standing up.
Solution Approach 2:
The elastic members are disposed on the bonded section which has different functional requirements than the half standing and standing parts. This local differentiation allows the elastic members to provide contraction force while the folded structure portions provide the height barrier, resolving the contradiction between simplicity and effectiveness.
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 design effectively prevents side leakage from the vicinity of end portions by ensuring the side wall end parts stand up sufficiently and rapidly directing moisture back into the absorbent core, enhancing the absorbent product's ability to manage excrement without leakage.
Implementation Method 1
elastic members arranged over almost entire length in the longitudinal direction of the standing part, contracting the standing part to form gathers
Data Source
AI summary
In an absorbent product (1), each of a pair of side wall parts (34) has two side wall end parts (341) bonded on both end portions of a bonded part (33) and a standing part (342) standing up from the main body part (2) between the two side wall end parts (341). The side wall part (34) is folded outwardly at an inner edge of the bonded part (33) and further folded inwardly. Each side wall end part (341) has a bonded section (3411) and a half standing part (3412) which is continuous from the standing part (342). The half standing part (3412) stands up from the main body part (2) lower than the standing part (342) and fits the vicinity of wearer's crotch in wearing. Thus, it is possible to prevent side leakage from the vicinity of end portions in a longitudinal direction of the absorbent product (1).