Wet-Resistant Laminate Label With Opaque Inner Layer
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Solution Overview
Problem
Uncoated paper labels on containers, especially bottles, lose their appearance and become fragile when exposed to moisture, leading to opacity loss and potential detachment due to the absorption of humidity or liquid, which affects the visual appeal and integrity of the label.
Innovation Solution
A laminate label structure is introduced, featuring an outer layer of uncoated paper susceptible to losing opaqueness when wet, paired with an opaque inner layer of plastics material, such as biaxial orientated polypropylene, which maintains opaqueness and provides a stable base for the paper, ensuring the label's appearance and adhesion remain intact even when saturated.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If an uncoated paper label is used to provide a preferred appearance, then the aesthetic quality is improved, but the label becomes susceptible to moisture absorption causing opacity loss, puckering, and fragility
Solution Approach 1:
The patent applies a laminate structure combining uncoated paper (outer layer) with a moisture-resistant backing material (inner layer). This composite construction allows the label to maintain the aesthetic qualities of uncoated paper while the backing layer provides moisture resistance, preventing opacity loss and structural degradation when exposed to humidity or liquid.
2Reliability
If a clear plastic film is laminated to the back of uncoated paper to prevent moisture damage, then the moisture resistance is improved, but the label appearance deteriorates because the clear film does not provide sufficient opacity when wet
Solution Approach 1:
The patent changes the optical parameter (opacity) of the backing layer by selecting materials with inherently high opacity properties. The backing layer is specifically chosen to maintain opacity when wet, ensuring that the label retains its visual appearance and readability even under moist conditions.
3Illumination intensity
If the label material is made opaque to maintain appearance when wet, then the visual appearance is improved, but the material selection becomes more restricted and complex
Solution Approach 1:
The patent divides the label into two functional segments: an outer uncoated paper layer for aesthetic purposes and an inner opaque backing layer for moisture resistance and opacity maintenance. This segmentation allows each layer to be optimized independently for its specific function, simplifying the overall material selection process.
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
The solution effectively maintains the label's appearance and adhesion to the container, preventing opacity loss and detachment, thus enhancing the visual appeal and durability of the label under wet conditions.
Implementation Method 1
an inner layer behind this first layer which is a material that is opaque, and such that it will maintain such opaqueness when wet
Implementation Method 2
the uncoated paper being secured to the under layer by a permanent adhesive
Data Source
AI summary
A label for a bottle where the label is comprised of a laminate where an outer layer (3) is a material susceptible to losing opaqueness when made wet, and an inner layer (5) behind this first layer which is a material that is opaque, and such that it will maintain such opaqueness when wet.