Absorbent Article Segmented Release Paper for Wrinkle-Free Undergarment Attachment
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Solution Overview
Problem
Conventional absorbent articles face issues with improper positioning and wrinkling of undergarments due to the adhesive layers adhering incorrectly during attachment, leading to discomfort and detachment problems when the garment is pulled up after fixation.
Innovation Solution
The absorbent article features wing-like flaps and hip-holding flaps with displacement-preventing adhesive layers, covered by removable release paper sheets, allowing for smooth attachment and prevention of wrinkles by exposing and attaching the adhesive layers in a controlled manner as the garment is pulled up.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the release paper sheet is thoroughly removed before attachment, then the adhesive layers are fully exposed for bonding, but the flaps turn or bend during attaching work causing adhesive misalignment and breakage
Solution Approach 1:
The release paper sheet is divided into multiple separate sheets: a first release paper sheet covering the main body adhesive layer and wing adhesive layers, and second release paper sheets covering the hip-holding flap adhesive layers. This segmentation allows each flap to be independently positioned and attached without interfering with other adhesive layers, preventing misalignment and breakage while ensuring reliable bonding.
Solution Approach 2:
The main body and wing-like flaps are attached to the undergarment first while the hip-holding flaps remain covered with release paper sheets. This preliminary action secures the main structure before the hip-holding flaps are attached, preventing the flaps from turning or bending during the attachment process and ensuring proper adhesive alignment.
2Reliability
If the hip-holding flaps are attached early, then the adhesive layers are utilized, but the undergarment cannot be pulled up smoothly causing wrinkles and discomfort
Solution Approach 1:
The main body and wing-like flaps are attached to the undergarment in a preliminary step while the hip-holding flaps remain covered. This allows the undergarment to be pulled up and adjusted to the desired position before the hip-holding flaps are attached, ensuring smooth fit and comfort without wrinkles, while still achieving reliable fixation of all flaps.
3Ease of manufacture
If all adhesive layers are exposed at once, then the attachment process is simplified, but the adhesive layers adhere to each other causing breakage
Solution Approach 1:
The release paper sheets are segmented to cover different adhesive layers separately. The first release paper sheet covers the main body and wing adhesive layers, while second release paper sheets cover the hip-holding flap adhesive layers. This segmentation prevents adhesive layers from adhering to each other during storage and handling, maintaining adhesive integrity while allowing a simplified step-by-step attachment process.
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
Ensures proper positioning and attachment of the absorbent article without causing wrinkles in the undergarment, preventing adhesive misalignment and detachment, and simplifies the wearing process by allowing easy expansion of the hip-holding flaps.
Implementation Method 1
adhesive layers provided to wing-like flaps... adhesive layers provided to hip-holding flaps... adhesive layers adhere to the adhesive layers
Data Source
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AI summary
[Problems] Provided is an absorbent article that can be smoothly set to an undergarment and be fixed to the undergarment at an appropriate position, and can be also fixed to the undergarment without causing wrinkles in the undergarment. [Means for solving problems] The release paper sheet is composed of a first release paper sheet 30 covering a main body displacement-preventing adhesive layer 11 and wing displacement-preventing adhesive layers 12 in a unified manner and a pair of second release paper sheets 31 respectively covering hip displacement-preventing adhesive layers 13. When the absorbent article is set to shorts, the first release paper sheet 30 is removed, and the main body displacement-preventing adhesive layer 11 and the wing displacement-preventing adhesive layers 12 of the absorbent article are fixed to the shorts that are pulled down. Then, the shorts are pulled up and worn, and the second release paper sheets 31 are removed to fix the hip displacement-preventing adhesive layers 13 to the shorts.