Disposable Diaper Tape Assemblies with Offset Adhesive Edges
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing closure tape assemblies in disposable diapers often result in adhesive regions being exposed during disposal, leading to unintended sticking to waste containers or the user, which complicates handling and disposal.
Innovation Solution
A fastener tape assembly with a new folding configuration and an extension component featuring a region of patterned adhesive or adhesive-free areas, designed to reduce delamination and prevent sticking by offsetting the bonding component's edge from the fastening and extension components' edges, allowing for thinner materials and improved disposability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the bonding component edge is aligned with the fastening component edge in conventional tape assemblies, then the structure is simple and easy to manufacture, but adhesive regions become exposed during disposal causing unintended sticking to waste containers or users
Solution Approach 1:
The tape assembly is segmented into three distinct components: a fastening component with adhesive, an extension component without adhesive, and a bonding component. This segmentation allows the adhesive-bearing fastening component to be separated from the disposal-facing extension component, preventing adhesive exposure during disposal while maintaining structural integrity through the multi-component design.
Solution Approach 2:
The extension component serves as an intermediary element between the fastening component and the bonding component. It acts as a non-adhesive barrier that prevents the adhesive on the fastening component from contacting waste containers or the user during disposal, while still allowing the tape assembly to function as a cohesive unit through bonding.
2Object-affected harmful factors
If thicker materials are used in the tape assembly to prevent adhesive exposure, then adhesive sticking is reduced, but the overall thickness increases compromising the thin profile needed for pant diapers
Solution Approach 1:
Different components of the tape assembly have different adhesive properties: the fastening component has adhesive for bonding to the diaper, while the extension component is explicitly designed without adhesive. This local differentiation allows the extension component to serve as a non-sticking barrier during disposal without requiring increased thickness, as the non-adhesive property is inherent to the material selection rather than a function of thickness.
3Device complexity
If the fastening component and bonding component are directly bonded, then the structure is simpler, but adhesive regions remain exposed and cause sticking issues during disposal
Solution Approach 1:
The direct bonding between fastening and bonding components is replaced by a segmented three-component structure. The extension component is inserted between the fastening component and bonding component, creating a physical barrier that prevents adhesive exposure during disposal while maintaining the bonded integrity of the overall assembly through the extension component's connection to both other components.
Data Source
AI summary
Various fastening tape closure assemblies are described. The closure tapes are useful in the manufacture of disposable articles, and particularly disposable diapers. The closure tapes generally include a fastening component, an extension component, and a bonding component. The tape systems provide a new folding configuration and reduced adhesive along a face of the extension component. Also described are disposable articles utilizing the tape closure assemblies.