Sealing Label Adhesion-Controlling Layers for Precise Opening
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Solution Overview
Problem
Sealing labels in the prior art have limited color options and suffer from reduced image sharpness due to production tolerances, affecting their opening effect.
Innovation Solution
A sealing label with a multilayer structure featuring two adhesion-controlling layers and color layers, where the adhesion between the adhesion-controlling layers and color layers is significantly lower than between the color layers and adjacent layers, allowing for a wide range of colors and precise opening behavior, and incorporating UV-luminescent pigments for alignment during printing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a multilayer adhesive structure with color layers is used, then a wide range of colors can be achieved, but the adhesion properties become dependent on coloring and pigmentation, affecting opening behavior
Solution Approach 1:
An adhesion-controlling layer is introduced as an intermediary between the color layers and the carrier/adhesive layers. This intermediate layer decouples the adhesion properties from the coloring and pigmentation of the color layers, ensuring that opening behavior remains consistent regardless of the specific colors used. The adhesion-controlling layer acts as a mediator that provides stable adhesion characteristics independent of the color layer composition.
2Ease of manufacture
If production tolerances are present in multilayer adhesive structures, then manufacturing is simplified, but image sharpness of the opening effect is reduced
Solution Approach 1:
The patent replaces reliance on precise mechanical alignment of multiple adhesive layers with a chemistry-based solution. The adhesion-controlling layer uses specific adhesion mechanisms (such as selective bonding or controlled release properties) that inherently define the parting line location, making the opening effect sharp and precise without requiring tight production tolerances for layer alignment. This substitutes mechanical precision requirements with chemical/adhesive property control.
3Strength
If adhesion between color layers and carrier/adhesive layers is high, then structural stability is improved, but the opening effect becomes less precise and sharp
Solution Approach 1:
The adhesion properties are made non-uniform across different regions and interfaces of the multilayer structure. The adhesion-controlling layer has locally optimized adhesion characteristics: strong adhesion to the carrier layer for structural stability, but controlled/weaker adhesion to the color layers to enable clean parting. This local differentiation of adhesion quality allows simultaneous achievement of structural integrity and sharp opening effects.
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
Enables a two-tone structure with high image definition, allowing for machine-readable features like data matrix codes and QR codes to be recognized optically, with the adhesion-controlling layers ensuring a clear and precise opening effect regardless of color selection.
Implementation Method 1
the first and second adhesion-controlling layers are UV-light luminescent pigmented, i. H. when irradiated with UV light, they emit visible light
Data Source
Figure 1~2
Figure 3a~3d
AI summary
The sealing label (1) has carrier layer (2) whose partial surface is applied with adhesion-controlling layer (3). An ink layer (4) is coated over entire surface of adhesion-controlling layer, and a partial surface of ink layer (4) is applied with adhesion-controlling layer (5). An entire surface of adhesion-controlling layer (5) and ink layer (6) is applied with ink layer (6) below which an adhesive layer (7) is applied. An independent claim is included for a method for manufacturing sealing label.