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Method for producing sound insulating pad under automotive carpet

A technology for automobile carpets and production methods, applied to chemical instruments and methods, special positions of vehicles, layered products, etc., can solve the problems of heavy weight, low utilization rate, high price, etc., achieve weight reduction and sound insulation, and save manufacturing and material cost, weight reduction effect

Active Publication Date: 2013-12-11
WUXI GISSING AUTO ACOUSTIC PARTS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages of the existing under-carpet sound insulation pads are: heavy weight, high price, low utilization rate, etc. (it cannot meet the performance requirements of some cars for under-carpet sound insulation pads)

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The production method of the sound insulation pad under embodiment 1 A94 carpet adopts the following process steps:

[0020] The production method of the sound insulation pad under the automobile carpet, the steps are as follows:

[0021] (1) Forming of the front piece of EPDM rubber: the density is 2.5kg / m 2 EPDM rubber adsorption molding; drying time: 26s, upper oven temperature: 340°C, lower oven temperature: 320°C; adsorption time: 6s; after adsorption molding, use a utility knife to remove surrounding waste on the mold;

[0022] (2) Forming of the back piece of EPDM rubber: the density is 2.0kg / m 2 EPDM adsorption molding; drying time: 20s, upper oven temperature: 310°C, lower oven temperature: 330°C; adsorption time: 6s; after adsorption molding, use a utility knife to remove surrounding waste on the mold;

[0023] (3) Opening and mixing: According to the PET fiber: low melting point fiber: cotton: PU weight ratio of 32: 30: 30: 2 for opening and mixing;

[002...

Embodiment 2

[0035] The production method of the sound insulation pad under the automobile carpet, the steps are as follows:

[0036] (1) Forming of the front piece of EPDM rubber: the density is 2.9kg / m 2 EPDM adsorption molding; drying time: 26s, upper oven temperature: 320°C, lower oven temperature: 340°C; adsorption time: 4s; after adsorption molding, use a utility knife to remove surrounding waste on the mold;

[0037] (2) Molding of the back piece of EPDM rubber: the density is 1.6kg / m 2 EPDM adsorption molding; drying time: 20s, upper oven temperature: 330°C, lower oven temperature: 330°C; adsorption time: 4-6s; after adsorption molding, use a utility knife to remove surrounding waste on the mold;

[0038] (3) Opening and mixing: According to the PET fiber: low melting point fiber: cotton: PU weight ratio of 324: 30-34: 34: 2 for opening and mixing;

[0039] (4) Steam molding: Take the loosened and mixed material and heat it to 155°C. After stirring, it is automatically sent to th...

Embodiment 3

[0049] The production method of the sound insulation pad under the automobile carpet, the steps are as follows:

[0050] (1) Forming of the front piece of EPDM rubber: the density is 2.7kg / m 2 The EPDM rubber is adsorbed and molded; baking temperature time: 28s, upper oven temperature: 330°C, lower oven temperature: 330°C; adsorption time: 5s; after adsorption molding, use a utility knife to remove surrounding waste on the mold;

[0051] (2) Molding of the back piece of EPDM rubber: the density is 1.8kg / m 2 The EPDM rubber is adsorbed and molded; baking temperature time: 18s, upper oven temperature: 320°C, lower oven temperature: 320°C; adsorption time: 5s; after adsorption molding, use a utility knife to remove surrounding waste on the mold;

[0052] (3) Opening and mixing: According to the PET fiber: low melting point fiber: cotton: PU weight ratio of 33: 32: 32: 3 for opening and mixing;

[0053] (4) Steam molding: Take the loosened and mixed material and heat it to 160°C...

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Abstract

The invention relates to a method for producing a sound insulating pad under an automotive carpet and belongs to the technical field of automotive interior parts. The sound insulating pad under the carpet is manufactured by using an elastic layer formed by PET (polyethylene terephthalate) fibers, low melting point fibers, cotton and PU (Poly Urethane) and a middle channel heavy coating formed by EPDM (Ethylene-Propylene-Diene Monomer). The product prepared by the method can reach equal density and unequal thicknesses and is greatly improved on the aspects of reducing the gram weight and insulating sound; the product adopts the forming flow production; excess materials of the product can be recycled, so that the manufacturing cost and the material cost are saved; in the whole production process of the product, no harmful substance is generated; the sound insulating pad under the automotive carpet belongs to an environment-friendly product.

Description

technical field [0001] The invention relates to a production method of a sound-insulating pad under an automobile carpet, specifically, it is used for installing under the main carpet of the passenger compartment of the automobile and above the sheet metal of the chassis; it can reduce the noise introduced into the automobile, and belongs to the automobile interior decoration technology field. Background technique [0002] Automotive interior parts are generally installed inside the car body to play the role of beautification, protection, and sound insulation and sound absorption. In the era of more and more pursuit of high performance, environmental protection, energy saving, lightweight, and individualization, the exterior decoration of automobiles, like the performance of automobiles, has attracted more and more attention from people. Therefore, the requirements for automotive interior parts are getting higher and higher. In the prior art, performance indicators such as...

Claims

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Application Information

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IPC IPC(8): B32B37/00B32B37/12B32B37/10B32B38/00B29C51/10B29C53/02B29C43/00B60N3/04
CPCY02P70/10
Inventor 费维
Owner WUXI GISSING AUTO ACOUSTIC PARTS TECH CO LTD
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