Method for producing sound insulating pad under automotive carpet

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

Active Publication Date: 2015-04-15
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 production method of a sound-insulating pad under an automobile carpet, and belongs to the technical field of automobile interior parts. It uses elastic layer (PET fiber + low melting point fiber + cotton + PU) and middle channel heavy coating (EPDM) to make the sound insulation pad under the carpet. The product prepared by the present invention can achieve equal density and different thickness, which greatly improves the reduction of gram weight and sound insulation, and the product forming flow operation, the remaining material of the product can be recycled and reused, which saves the cost of manufacturing and materials; the whole production process of the product No harmful substances are produced, and it is an environmentally 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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Patent Type & Authority Patents(China)
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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