Paper Packaging Sheets for Tear-Resistant Absorbent Articles
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Solution Overview
Problem
Paper packaging sheets for absorbent articles tend to tear easily, compromising their usability and touch, and practical applications have not advanced compared to resin films and nonwoven fabrics.
Innovation Solution
The packaging sheet is made of paper with inward folding and sealing in specific directions, providing tensile elongation of 15% or more in both longitudinal and transverse directions, enhancing resistance to tearing while maintaining a good touch.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the paper packaging sheet is made thick to prevent tearing, then the resistance to tearing is improved, but the touch becomes hard and uncomfortable
Solution Approach 1:
The invention changes the physical parameters of the paper packaging sheet by controlling its thickness to 0.03mm to 0.10mm and specifying tensile elongation of 15% or more in both longitudinal and transverse directions. This parameter optimization allows the paper to achieve sufficient tearing resistance without becoming thick and hard, thus resolving the contradiction between strength and touch comfort
Solution Approach 2:
The invention uses composite material structure by combining paper with specific physical properties (tensile elongation ≥15%, controlled thickness) to achieve both tearing resistance and soft touch. The paper packaging sheet integrates multiple functional requirements through material composition and structural design
2Ease of operation
If the paper packaging sheet is made thin to maintain good touch, then the touch comfort is improved, but the resistance to tearing deteriorates
Solution Approach 1:
The invention optimizes the thickness parameter within a specific range (0.03mm to 0.10mm) and controls tensile elongation to be 15% or more in both directions. This parameter control ensures the paper remains thin enough for comfort while maintaining sufficient tearing resistance through enhanced elasticity
Solution Approach 2:
The invention applies different quality requirements to different aspects of the paper packaging sheet: thinness (0.03mm-0.10mm) for touch comfort, high tensile elongation (≥15%) for tearing resistance, and specific basis weight (10g/m² to 50g/m²) for overall performance. These localized quality specifications resolve the contradiction between thinness and strength
Data Source
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AI summary
An individually packaged absorbent article, for which an absorbent article is individually packaged by a packaging sheet made of paper, wherein the packaging sheet is inwardly folded in a longitudinal direction with the absorbent article disposed inside the packaging sheet, and both edge portions in a transverse direction orthogonal to the longitudinal direction are sealed, and the packaging sheet has tensile elongation in the longitudinal direction and tensile elongation in the transverse direction that are 15% or more.