Integrally Formed Micro-Hook Panels for Sanitary Articles
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional absorbent sanitary articles face challenges such as high production costs due to complex equipment requirements, unpleasant stiffness and sharpness from micro-hook pads, and inefficiencies in manufacturing processes.
Innovation Solution
The development of an absorbent sanitary article with integrally formed micro-hook front panels on the outer surface of the backsheet, produced using a method that involves a micro-hook forming unit with an ultrasonic horn to create micro-hooks on a non-woven web, eliminating the need for discrete micro-hook pads and reducing material costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If discrete micro-hook pads made from rigid thermoplastic material are used, then effective fastening function is achieved, but unpleasant stiffness and sharpness perception occurs during application
Solution Approach 1:
The patent changes the material parameter from rigid thermoplastic to soft flexible material (such as silicone rubber or thermoplastic elastomer), fundamentally altering the mechanical properties to eliminate stiffness and sharpness while preserving the micro-hook fastening function through surface texture modification rather than rigid structure
Solution Approach 2:
The patent uses a soft flexible material that can be directly formed on the backsheet surface, replacing the expensive discrete micro-hook pads made from rigid thermoplastic material. This approach reduces material costs and eliminates the need for complex assembly of separate fastening components
2Manufacturing precision
If continuous micro-hook tapes are cut into small discrete pads with high precision, then proper spacing and positioning is achieved, but complex and expensive dedicated equipment is required
Solution Approach 1:
The patent extracts the micro-hook fastening function from separate discrete pads and integrates it directly into the backsheet material itself. The micro-hooks are formed as surface features of the backsheet rather than as separate components, eliminating the need for complex cutting, spacing, and assembly equipment
Solution Approach 2:
The patent merges the backsheet and micro-hook fastening elements into a single integrated component. The micro-hooks are formed directly on the backsheet surface through molding or surface treatment, combining the base material and fastening function into one element, thereby simplifying manufacturing equipment requirements
3Strength
If discrete micro-hook pads are fixed on non-woven support web by glue or welding, then fastening tabs are formed, but additional manufacturing steps and materials are required
Solution Approach 1:
The patent merges the micro-hook fastening elements with the backsheet material itself, eliminating the need for separate non-woven support webs and adhesive bonding steps. The micro-hooks are formed as integral surface features of the backsheet through molding or surface treatment processes
Solution Approach 2:
The backsheet material itself provides the micro-hook fastening function through surface texture modification, eliminating the need for additional components and assembly steps. The backsheet serves both its primary impermeable barrier function and the fastening function through integrated micro-hook formation
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 solution simplifies the manufacturing process, reduces material costs, and provides a softer and more comfortable fastening system for users, while maintaining effective hook-and-loop functionality.
Implementation Method 1
a micro-hook forming unit with an ultrasonic horn to create micro-hooks on a non-woven web
Data Source
Figure 1
Figure 2~3
Figure 4~5
AI summary
An absorbent sanitary article comprising a chassis (12) having a front section (16) and a rear section (18), a micro-hook front panel (30) integrally formed on a portion of the backsheet (24) in a front section (16) of the chassis (12) and two back side panels (34) attached to the rear section (18) of the chassis (12) and having respective micro-loop areas (36) configured for forming a hook-and-loop connection with the micro-hook front panel (30).