Insulation component manufacturing method and flow-tight, light-weight insulation component for vehicles
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Solution Overview
Problem
Existing insulation components for vehicles face challenges in recycling due to the use of diverse materials like PET, Co-PET, PA, EVA, PE, and PP, which do not adhere well, leading to uneconomical recycling and significant weight due to conventional nonwoven insulation, and are often manufactured in a two-stage process.
Innovation Solution
A method involving a steam-vacuum tool to integrate a textile top cloth, carrier, and absorber layer in a single step, using a VON nonwoven with fibers perpendicular to the surface, and incorporating recyclable materials to form a flow-tight, lightweight insulation component.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If conventional nonwoven insulation with mixed fibers and binders is used, then insulation components achieve sufficient mechanical properties and sound absorption, but the weight increases significantly (600 g/m2 to several kg/m2)
Solution Approach 1:
The patent changes the fundamental parameter of fiber orientation from random/conventional arrangement to predominantly perpendicular orientation relative to the surface. This structural parameter change enables the VON nonwoven to achieve superior mechanical properties and sound absorption at lower weights (300-500 g/m2), directly resolving the contradiction between weight reduction and maintaining mechanical performance.
Solution Approach 2:
The patent employs a composite material system consisting of VON nonwoven with perpendicular fiber orientation combined with a flow-tight membrane layer. This composite structure leverages the mechanical strength and acoustic properties of the perpendicular fibers while the membrane provides flow tightness, achieving weight reduction without sacrificing overall component performance.
2Adaptability or versatility
If diverse materials (PET, Co-PET, PA, EVA, PE, PP) are used in insulation components, then various functional requirements are met, but recycling becomes uneconomical due to poor adhesion between materials
Solution Approach 1:
The patent applies homogeneity by using chemically compatible materials throughout the insulation component structure. The VON nonwoven and flow-tight membrane are selected from compatible material families (polyester, polyamide) that can be thermally bonded together and subsequently recycled as a unified material stream, eliminating the recycling problems caused by incompatible material combinations.
Solution Approach 2:
The patent merges multiple functional requirements into a integrated single-step manufacturing process where the carrier, absorber layer, and flow-tight membrane are bonded simultaneously through thermal bonding. This consolidation not only improves manufacturing efficiency but also creates a unified material structure that is more amenable to recycling compared to multi-stage assembled components.
3Manufacturing precision
If two-stage manufacturing process is used for insulation components, then separate layers can be optimized independently, but production time and complexity increase
Solution Approach 1:
The patent merges the manufacturing of the carrier, absorber layer, and flow-tight membrane into a single integrated process step. All three components are placed in the molding tool and thermally bonded simultaneously, eliminating the need for separate assembly operations. This achieves both high manufacturing precision through controlled thermal bonding and high productivity through process consolidation.
Solution Approach 2:
The patent applies preliminary action by pre-positioning all component layers (carrier, VON nonwoven, flow-tight membrane) into the molding tool before the thermal bonding operation. This preliminary arrangement allows the subsequent single-step bonding process to create the final integrated structure without requiring intermediate handling or assembly operations.
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
Achieves a 30% lower weight with comparable mechanical properties, allows for single-step manufacturing, and enables recycling of production waste, promoting sustainability.
Implementation Method 1
a method involving a steam-vacuum tool to integrate a textile top cloth, carrier, and absorber layer in a single step
Implementation Method 2
a method involving a steam-vacuum tool to integrate a textile top cloth, carrier, and absorber layer in a single step
Data Source
AI summary
An insulation component manufacturing method for manufacturing flow-tight, light-weight, sustainable insulation components for vehicles, the insulation component having at least one tufted textile top cloth, a film as the steam-and air-tight flow-tight layer and an absorber layer from a nonwoven having fibers that run vertically upwards relative to the surface, and is manufactured by means of at least one steam vacuum tool. Also, a flow-tight, light-weight, sustainable insulation component for vehicles.