Protective Cover Laminating Polyurethane Inner Skin and Fabric Outer Skin
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Solution Overview
Problem
Conventional protective covers for electronic devices focus primarily on protection and grip but fail to enhance the aesthetics, limiting their visual appeal due to material constraints.
Innovation Solution
A protective cover is manufactured by laminating a polyurethane inner skin with a fabric outer skin, incorporating a reinforcement plate and cradle, and using thermo-compression and hot melt bonding to create a durable and aesthetically improved design that accommodates the electronic device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If a conventional protective cover made of single material is used, then protection and grip are provided, but aesthetics are not improved
Solution Approach 1:
The protective cover uses a composite structure with an inner skin made of polyurethane material and an outer skin made of fabric member. The inner skin provides protection and grip through its material properties, while the fabric outer skin enhances aesthetics with its texture and appearance. This composite material approach allows simultaneous achievement of functional requirements and aesthetic improvement.
2Shape
If a fabric member is applied to the exterior of the protective cover, then aesthetics are improved, but manufacturing complexity increases
Solution Approach 1:
The manufacturing process performs preliminary actions by first blanking the inner skin and fabric member into corresponding shapes before lamination. The fabric member is prepared in advance with the correct shape and is then laminated to the inner skin. This preliminary preparation simplifies the overall manufacturing process by organizing complex steps in a logical sequence, making the multi-material construction more manageable.
Solution Approach 2:
The manufacturing process merges multiple operations into integrated steps: blanking both components to corresponding shapes, laminating them together, thermo-compressing the combined structure, and finally cutting the thermo-compressed preform. This merging of operations streamlines the manufacturing process despite the complexity of using multiple materials, reducing the number of separate handling steps.
3Reliability
If thermo-compression is applied to the laminated preform, then durability and quality are improved, but manufacturing time increases
Solution Approach 1:
The thermo-compression process utilizes phase transitions by heating the laminated preform to a temperature where the polyurethane inner skin becomes pliable and then cooling it to set the compressed shape. This controlled phase change allows the material to be formed into the final durable structure in a single continuous operation, improving efficiency despite the thermal processing time required.
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 enhances both the functionality and aesthetics of the protective cover by providing a high-quality, durable, and visually appealing solution that improves grip and protection while maintaining the electronic device's functionality.
Implementation Method 1
hot melt bonding to create a durable and aesthetically improved design
Implementation Method 2
thermo-compressing the laminated preform along an outer peripheral edge of the protective cover
Data Source
AI summary
A method of manufacturing a protective cover for an electronic device is disclosed. The method includes forming an inner skin by blanking, blanking an outer skin of a fabric member in a shape corresponding to the blanked inner skin, forming a preform of a protective cover by laminating the inner skin and the outer skin with each other, thermo-compressing the laminated preform along an outer peripheral edge of the protective cover and forming the protective cover by cutting at least a portion of a region where the preform is thermo-compressing by the blanking.