Heat-Shrink Wrapping Film With Electrically Variable Color and Text
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Solution Overview
Problem
Existing heat shrinkable films for labels and vehicle wrapping cannot vary the printed details once they are applied, limiting the ability to change colors or text.
Innovation Solution
A heat shrinkable film with a capsule layer containing microcapsules, each filled with electrophoretic particles or quantum dots, and a binder to fix the microcapsules to the film, allowing color or text variation through an applied electric field.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a heat shrinkable film with printed details is used, then the film can be tightly attached to the bottle surface, but the printed details cannot be varied or changed
Solution Approach 1:
The film incorporates microcapsules containing electrophoretic particles that can dynamically change color or text display in response to electrical signals. This dynamic capability allows the same film to display different information after application, resolving the contradiction between adaptability and fixed structure.
Solution Approach 2:
The film uses electrophoretic particles whose optical properties can be changed by applying an electrical field. By changing the electrical parameter, the film's visual characteristics (color, text) can be varied without physical modification, enabling adaptability while maintaining a relatively simple film structure.
2Adaptability or versatility
If a vehicle wrapping film with fixed color is used, then the film can provide decorative coverage, but the color or text cannot be changed after application
Solution Approach 1:
The wrapping film incorporates microcapsules with electrophoretic particles that enable dynamic color and text changes when electrical energy is applied. This allows the same film to provide multiple decorative options without requiring multiple different films, reducing overall energy consumption for color changes.
Solution Approach 2:
The film replaces mechanical color change methods (such as physical layer separation or material transformation) with an electrical field-based electrophoretic system. This substitution enables more efficient and controllable color changes with lower energy requirements.
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 the film to change colors or text dynamically by manipulating electrophoretic particles or quantum dots with an electric field, providing flexibility in design after application.
Implementation Method 1
a capsule layer formed at one surface of the heat shrinkable film while including a plurality of microcapsules... each including a fluid and electrophoretic particles therein
Implementation Method 2
a heat shrinkable film shrinkable when the heat shrinkable film reaches a predetermined temperature... the resultant heat shrinkable film may be thermally shrunk by heat applied thereto
Data Source
AI summary
A film for wrapping including a heat shrinkable film shrinkable when the heat shrinkable film reaches a predetermined temperature, and a capsule layer formed at one surface of the heat shrinkable film while including a plurality of microcapsules is disclosed. Electrophoretic particles are included in the microcapsules. Accordingly, a color or text represented at the film for wrapping is variable.