Multi-Layer TPO Trim Extrusion for Decorative Vehicle Interiors
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Solution Overview
Problem
Current methods for creating decorative vehicle interior components are cumbersome and labor-intensive, requiring manual cutting, sewing, and adhesive bonding of different materials, which can be problematic and inefficient.
Innovation Solution
The method involves extruding a first thermoplastic olefin (TPO) layer with a patterned show surface and a backing surface, then applying a second TPO layer to create a multicolor, multi-grained design directly onto the first layer, eliminating the need for additional processing steps like insert molding and adhesive bonding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If manual cutting, sewing, and wrapping processes are used to create decorative interior trim pieces, then decorative features can be applied to vehicle interior surfaces, but the process becomes cumbersome and requires significant manual labor
Solution Approach 1:
The patent combines multiple separate manufacturing operations (cutting, sewing, wrapping, bonding) into a single integrated extrusion process. The multi-layer TPO structure with patterned surfaces is created in one continuous operation, eliminating the need for sequential manual assembly steps and significantly improving both ease of manufacture and productivity.
Solution Approach 2:
The decorative pattern and multi-layer structure are pre-formed during the extrusion process itself, before the material is applied to the vehicle interior component. The patterned TPO layers are extruded with their final decorative configuration already in place, eliminating subsequent processing steps.
2Ease of manufacture
If adhesive bonding is used to bond material to a part, then material can be attached to create decorative surfaces, but bonding unlike materials becomes problematic
Solution Approach 1:
The patent uses the same TPO material for all layers, ensuring material homogeneity throughout the structure. This eliminates compatibility issues between unlike materials that would require different adhesives or bonding methods, while maintaining reliable attachment through the integrated extrusion process.
Solution Approach 2:
The patent extracts and eliminates the adhesive bonding step entirely from the manufacturing process. By forming the multi-layer decorative structure through extrusion alone, the need for separate adhesive application and bonding operations is removed, simplifying manufacture while ensuring reliable material attachment.
3Adaptability or versatility
If painting is used to apply decorative design on a part, then decorative features can be added, but extra processing steps and bonding issues arise
Solution Approach 1:
The patent creates decorative surfaces using composite TPO structures with multiple layers, each potentially having different colors, textures, or patterns. This provides adaptability for various decorative designs while maintaining a single integrated manufacturing process, avoiding the complexity of painting operations and additional bonding steps.
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
This approach simplifies the process by integrating decorative features directly into the material, reducing manual labor and enabling easier recycling, while providing a visually appealing, multicolored, and multi-grained finish without the need for extra processing steps.
Implementation Method 1
a first extruded TPO layer having a first show surface and a second backing surface; a second extruded TPO layer applied to the second backing surface of the first extruded TPO layer after the first extruded TPO layer is formed by an extrusion process
Data Source
AI summary
A trim component is provided herein, the trim component having: a first extruded TPO layer having a first show surface and a second backing surface; a second extruded TPO layer applied to the second backing surface of the first extruded TPO layer after the first extruded TPO layer is formed by an extrusion process, wherein a portion of the second extruded TPO layer is visible at the first show surface through a pattern cut in the first extruded TPO layer.