3D Embossed Needle-Punched Carpet for Vehicle Interiors
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Solution Overview
Problem
Existing methods for producing motor vehicle floor coverings lack the ability to create a three-dimensionally shaped, embossed needle felt carpet with a 'living room/feel-good atmosphere' design, particularly for e-vehicles, where a uniform and coherent styling is required across luggage and passenger compartments.
Innovation Solution
A method involving a two-dimensional needle felt carpet with a bicomponent (BiCo) fiber content, embossed using a temperature-controlled embossing tool, then laminated and thermoformed to create a three-dimensionally deformed structure with optional insulation, maintaining the textile character and durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a conventional flat needle-punched nonwoven is used, then the production process is simple, but the visual and tactile appeal is insufficient
Solution Approach 1:
The patent applies embossing technology to transform the flat two-dimensional needle-punched nonwoven into a three-dimensional structure with raised patterns on the visible surface. This dimensionality change enhances visual and tactile appeal while maintaining the underlying flat construction for manufacturing simplicity.
2Shape
If embossing is applied to the carpet surface, then visual and tactile appeal is enhanced, but the carpet structure becomes more complex
Solution Approach 1:
The embossing process is integrated into the existing production line at an optimal stage where the nonwoven has sufficient stability to hold the embossed pattern but hasn't undergone subsequent processes that might distort it. This preliminary action approach adds embossing capability without requiring complete process redesign.
3Adaptability or versatility
If the carpet is deformed into a three-dimensional motor vehicle floor covering, then adaptability to vehicle interior is improved, but the embossed structure may be damaged
Solution Approach 1:
The patent carefully selects embossing parameters including temperature range (above glass transition but below melting point of pile fibers), pressure, and duration to create an embossed structure that is permanent yet flexible enough to withstand the deformation processes required for vehicle floor covering installation without cracking or losing its three-dimensional character.
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 resulting carpet offers a higher-quality look and feel with customizable embossed patterns, meeting automobile manufacturer specifications for durability and wear resistance, while ensuring the carpet's deformability and aesthetic appeal.
Implementation Method 1
a temperature above a glass transition point and below a melting point of the pile fiber material
Implementation Method 2
The compressed pile does not adhere to the fiber base or the embedded fiber base layer
Data Source
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AI summary
The invention relates to a method for producing a three-dimensionally formed needle-punched nonwoven, in particular a dilour carpet of a motor vehicle, and the carpet as such having an embossed visible surface.