Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for producing a sound-insulating interior panel for motor vehicles and the obtained sound-insulating interior panel

A technology for interior panels and motor vehicles, which is applied in the direction of chemical instruments and methods, applications, vehicle parts, etc., and can solve problems that affect costs and affect the cost of soundproof interior panels

Inactive Publication Date: 2020-01-07
CENTRE DETUDE ET DE RECHERCHE POUR LAUTOMOBILE (CERA)
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0017] In any case, the cladding has a certain production complexity due to its pre-granulation, requiring the use of a large amount of raw materials, which greatly affects its cost and thus the cost of the acoustic interior panels

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for producing a sound-insulating interior panel for motor vehicles and the obtained sound-insulating interior panel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0040] Refer to attached figure 1 A method for producing an acoustic interior trim panel 1 for a motor vehicle is described, said method comprising the following steps:

[0041] - providing a hot pressing mold having a female mold 2 and a male mold 3 which define a mold cavity 4 sealed by closing the hot pressing mold, said male mold or said female mold having a granular structure Surface 5,

[0042] - between the female mold and the male mold, a breathable cover layer 6, a thermocompression-moldable breathable sound-absorbing structural layer 7, and a thermoplastic sealing film 8 are arranged superimposed one after the other, said breathable sound-absorbing structural layer based on fibers bonded to each other with an adhesive, said air-permeable covering layer facing said surface, said air-permeable sound-absorbing structural layer and air-permeable covering layer being at a temperature allowing molding of these layers,

[0043] - closing the thermocompression mold to seal...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
heightaaaaaaaaaa
heightaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention concerns a method comprising the following steps: providing a hot pressing mould, said mould comprising a die (2) and a punch (3) defining a moulding cavity (4) sealed by closing said mould, said punch or said die having a face (5) provided with graining; arranging, between said die and said punch, stacked in sequence, a permeable coating layer (6), a permeable structural and sound absorption layer (7) capable of being moulded by hot pressing and a sealed thermoplastic film (8), said coating layer being turned towards said face, said layers being at a temperature at which they can be moulded; closing said mould in such a way as to seal said cavity; applying a pressurised gas at the side of said film, in such a way as to press said film against said structural layer in order to compress it and in such a way as to press said coating layer against said face in order to provide it with graining; after cutting around the periphery, demoulding the obtained panel (1).

Description

technical field [0001] The invention relates to a method for producing an acoustic interior panel for a motor vehicle and an acoustic interior panel obtained by this method. Background technique [0002] In particular, from document US-5 908 524 is known a method for producing an acoustic interior trim panel for a motor vehicle, said method comprising the following steps: [0003] - providing a hot pressing mold having a female mold defining a mold cavity and a male mold, either the male mold or the female mold having a surface with a granular structure, [0004] - between said female mold and said male mold, a sealing covering layer and a breathable sound-absorbing structure layer capable of being molded by hot pressing are arranged superimposed one after another, the air-permeable sound-absorbing structure layer having fibers bonded to each other with adhesive on the basis that the sealing cover layer is towards said surface, said air permeable sound-absorbing structural ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B29C51/10B29C51/14B29C70/42B29C70/44B29C43/02B29C43/32B60R13/08B32B5/02B32B5/26B32B27/02B32B27/36B32B9/02B32B9/04B32B17/04B32B17/10B32B17/12B32B27/34B32B27/32B32B27/08B32B27/40B32B3/28B29K67/00B29K75/00B29K311/10B29L31/00
CPCB29C43/021B29C43/32B29C51/10B29C51/145B29C70/42B29C70/44B29K2067/003B29K2075/00B29K2311/10B29K2995/0002B29L2031/3005B29L2031/756B32B3/28B32B5/022B32B5/024B32B5/18B32B5/26B32B27/065B32B27/08B32B27/12B32B27/32B32B27/34B32B2260/021B32B2260/046B32B2262/0284B32B2262/06B32B2262/062B32B2262/08B32B2262/10B32B2262/101B32B2266/0278B32B2307/10B32B2307/718B32B2307/72B32B2605/08B60R13/08B29C43/10B29C43/203B29C2043/3222B32B5/22B32B2262/0276
Inventor C·布洛姆D·德勒泽M·波蒂埃
Owner CENTRE DETUDE ET DE RECHERCHE POUR LAUTOMOBILE (CERA)