Sealing Film with Translucent Functional Layers for Dual-Background Visibility
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Solution Overview
Problem
Existing sealing films fail to clearly indicate opening on both light and dark base surfaces, making it difficult to determine if a packaging element has been opened, and the text, logo, or image on the base surface becomes illegible or less recognizable when the sealing film is applied.
Innovation Solution
A sealing film with multiple functional layers, including at least two color display layers and two adhesion-controlling layers, where the carrier film can be partially detached to reveal a symbol arrangement in two sub-regions, ensuring visibility on both light and dark surfaces through a partially translucent configuration, allowing the symbol arrangement to be optically visible on the remnant and pulled-off layer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a dark color layer is used in the sealing film, then the graphic object may be visible on dark base surfaces, but the text, logo, or image on the base surface becomes illegible or less recognizable
Solution Approach 1:
The sealing film is divided into multiple functional layers including at least two color display layers and at least two adhesion-controlling layers. This segmentation allows different layers to perform specific functions: some layers provide color for visibility while others control adhesion to enable selective detachment, thereby resolving the contradiction between visibility and information preservation
Solution Approach 2:
The sealing film transitions from a closed state to an opened state through selective detachment of the carrier film. In the closed state, the film provides protection and maintains visibility of base surface information. Upon opening, the carrier film detaches to reveal the symbol arrangement, dynamically switching between protection mode and indication mode
2Reliability
If the carrier film is detached to reveal a symbol arrangement, then opening indication is provided, but the symbol contrast is relatively low making it difficult to recognize whether the sealing film was already detached
Solution Approach 1:
The sealing film employs at least two color display layers with different colors arranged in specific patterns. When the carrier film is detached, these colored layers reveal a symbol arrangement with high visual contrast. The use of multiple colors enhances the visibility and recognizability of the opened state, directly addressing the low contrast problem
Solution Approach 2:
The sealing film uses a composite structure with multiple color display layers and adhesion-controlling layers. This composite design allows the creation of high-contrast symbol arrangements through the interaction of different colored layers, improving the detectability of the opened state while maintaining the sealing function
3Adaptability or versatility
If multiple functional layers are added to improve visibility and adhesion control, then the sealing film can indicate opening on both light and dark surfaces, but the device complexity increases
Solution Approach 1:
The multiple functional layers in the sealing film serve multiple purposes simultaneously. The color display layers provide both color for visibility and structural integrity, while the adhesion-controlling layers manage both attachment to the base surface and selective detachment. This multi-functionality allows the film to work on both light and dark surfaces without proportionally increasing complexity
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 ensures that the symbol arrangement is clearly visible in one sub-region regardless of the base surface color, allowing users to determine if the sealing film has been opened, and maintains legibility of text, logos, or images on the base surface.
Implementation Method 1
the functional layers and the adhesive layer are at least partially translucent and that the functional layers comprise at least one further color display layer and at least one further adhesion-controlling layer, wherein by means of the at least partially translucent configuration of the functional layers, the at least one symbol arrangement in the first sub-region is better optically visible on a light base surface than in the second sub-region, and the at least one symbol arrangement in the second sub-region is better optically visible on a dark base surface than in the first sub-region
Data Source
AI summary
A sealing film, comprising a carrier film and a plurality of functional layers comprising at least two color display layers and at least two adhesion-controlling layers, the sealing film having an adhesive layer for fastening to a base surface, the carrier film being at least partially detachable from the functional layers in order to bring the sealing film from a first state into a second state, at least one symbol arrangement being optically visible at least in a remainder in the second state, which at least one symbol arrangement is arranged in a first subregion and a second subregion. According to the invention, the functional layers and the adhesive layer are at least partially translucent and the functional layers comprise at least one additional color display layer and at least one additional adhesion-controlling layer, the functional layers being designed in such a way that the at least one symbol arrangement is optically better visible in the first subregion than in the second subregion on a light background and that the at least one symbol arrangement is optically better visible in the second subregion than in the first subregion on a dark background.