Segmented Adhesive Tape for Hygiene Item Closure

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Solution Overview

Problem

Adhesive hygiene article fastening tapes face challenges in reliably attaching to hygiene items with minimal dimensions without buckling or damaging sensitive surfaces, and existing solutions struggle to ensure secure closure while allowing for easy opening and re-closure.

Innovation Solution

The use of adhesive hygiene article fastening tapes with two distinct adhesive functional areas, where the first adhesive functional area has higher peel-off forces and is smaller, and the second has lower peel-off forces, allowing for reliable mechanical attachment and detachment, even on thin films and sensitive non-woven fabrics, while preventing damage to the second closure zone.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If adhesive hygiene article fastening tapes use a single adhesive functional area with high peel-off forces, then secure attachment is achieved, but damage to sensitive surfaces and difficult opening occur

Engineering Contradiction:

Improveattachment strengthVSAvoidsurface damage

Core Design Contradiction:

StrengthVSObject-affected harmful factors

Solution Approach 1:

The adhesive functional area is divided into two distinct segments: a first adhesive functional area with high peel-off forces for secure attachment to the closure zone, and a second adhesive functional area with lower peel-off forces for easy opening and re-closure. This segmentation allows each area to perform its specific function optimally without compromising the other.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different regions of the adhesive functional area are assigned different adhesive properties. The first adhesive functional area uses adhesive material with higher peel-off forces for strong bonding, while the second adhesive functional area uses adhesive material with lower peel-off forces for gentle attachment that prevents surface damage and allows easy opening.

Inventive Principle:

Principle #3Local quality

2Length of moving object

If adhesive hygiene article fastening tapes use minimal dimensions, then compact design is achieved, but reliable mechanical attachment becomes difficult

Engineering Contradiction:

Improvetape lengthVSAvoidattachment reliability

Core Design Contradiction:

Length of moving objectVSReliability

Solution Approach 1:

The tape is segmented into two adhesive functional areas with different sizes and strengths. The first adhesive functional area, though small, provides reliable attachment through high peel-off forces, while the second adhesive functional area compensates for the minimal overall dimensions by providing additional bonding surface with appropriate adhesion characteristics.

Inventive Principle:

Principle #1Segmentation

3Strength

If adhesive hygiene article fastening tapes use high peel-off forces, then secure closure is achieved, but easy opening and re-closure become difficult

Engineering Contradiction:

Improveclosure strengthVSAvoidopening ease

Core Design Contradiction:

StrengthVSEase of operation

Solution Approach 1:

The closure mechanism is segmented into two adhesive functional areas: the first area provides strong closure through high peel-off forces, while the second area enables easy opening and re-closure through lower peel-off forces. This segmentation allows the tape to achieve both secure closure and user-friendly operation.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different adhesive properties are applied locally to different functional areas. The first adhesive functional area uses high-strength adhesive for secure closure, while the second adhesive functional area uses lower-strength adhesive that allows easy opening and re-closure by the user.

Inventive Principle:

Principle #3Local quality

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 configuration ensures operational reliability and minimizes the risk of accidental opening of hygiene article fastening tapes during storage and application, maintaining secure attachment with minimal dimensions and preventing damage to sensitive surfaces.

Implementation Method 1

adhesive hygiene article fastening tapes, having a carrier tape which has an adhesive-bearing front side and a rear side, with at least one adhesive layer which forms a first adhesive functional area and a second adhesive functional area

Methodology Applied

Scientific EffectAdhesion: Adhesive

Data Source

PatentEP3443942B1Adhesive hygienic item closure tape, semifinished tape material of manufacturing an adhesive hygienic item closure tape and hygienic item which can be sealed or closed with hygienic item closure tape

Publication Date: 2022.12.07 LOHMANN KOESTER

Figure 1~5
Figure 6

AI summary

A first adhesive functional area with an adhesive exhibiting high peel-off forces and a second adhesive functional area with an adhesive exhibiting lower peel-off forces can provide an adhesive hygiene article closure tape which can be reliably attached to a hygiene article by machine with minimal dimensions.