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Method for manufacturing three-D formed base material for noise reduction

A base material and three-dimensional technology, which is applied in the field of manufacturing three-dimensional composite materials, can solve the problems of heavy sound insulation materials and achieve good sound absorption performance

Inactive Publication Date: 2003-10-01
BAYER CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these soundproofing materials are heavy

Method used

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  • Method for manufacturing three-D formed base material for noise reduction
  • Method for manufacturing three-D formed base material for noise reduction
  • Method for manufacturing three-D formed base material for noise reduction

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Set the weight per unit area to about 1000 g / m 2 A flax-sisal mat (50% flax, 50% sisal) sheet was placed on a horizontal support fixture. The size of the pad depends on the size of the forming tool. The pad should cover all parts of the tool during the forming step. The polyol formulation according to Table 1 was applied to the upper surface of the mat with isocyanate 2 in a mixing ratio POLYOL / ISO of 100:139.4 using a low pressure-mixing head equipped with a built-in static mixer. Equipment for this type of application is commercially available, eg from Langemann. Typical pressure is 300 psi, the throughput of material is adjusted to about 20 grams per second, and the total amount of polyurethane resin sprayed on the pad is about 500 grams per meter 2 .

[0045] The substrate is then transferred into an aluminum forming tool heated to 90°C. The substrate is placed on the male part of the mold with the resin treated side facing the male part of the mold. This way,...

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Abstract

The present invention relates to a manufacturing method of three-dimensional automobile sound insulation accessories. Specifically, the method includes the steps of mixing a two-component polyurethane resin, applying the resin to a substrate, shaping the substrate and then cleaning and demoulding the surface of the resin-applied substrate.

Description

technical field [0001] The invention relates to a method of manufacturing a three-dimensional composite material with structural and sound-absorbing properties. The method of the present invention comprises the steps of preparing a polyurethane resin and applying the resin to a first side of a substrate, and then forming the substrate into a desired three-dimensional shape. Further, the present invention relates to the manufacture of automotive sound-absorbing components such as three-dimensional instrument panels, interior and engine side fire barrier sound insulation, side hood sound insulation, internal gear case sound insulation and trunk sealing surface sound insulation. Background technique [0002] Typically, the interior of a car is insulated from the sound conducted by the car frame, which originates from tires, road noise, wind noise, engine noise, and noise from other mechanical parts of the car. A number of substrates are known in the art for attenuating sound f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D7/24B29C43/20B29C44/56B29C67/24B29K75/00B29L9/00C08G18/65
CPCB29C44/5618B29C67/246B29K2075/00B29K2995/0002Y10T428/24512Y10T428/24149Y10T428/24496Y10T428/249958Y10T428/24994Y10T428/249962Y10T428/249955Y10T428/31551B32B3/12
Inventor S·迈尔-阿伦斯T·J·马特维茨克B·李M·A·布拉斯茨基维茨W·瓜尔涅里
Owner BAYER CORP