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One-time forming method for automobile carpet sound insulation pad

A technology for car carpets and sound insulation mats, which is applied in the field of car interior parts, can solve the problems of poor odor VOC performance, poor VOC performance, and high equipment investment costs, and achieve the effects of improving VOC, reducing the weight of carpets, and bonding firmly

Inactive Publication Date: 2018-01-12
WUXI GISSING AUTO PARTS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The carpet with surface blanket + EVA + foaming process has disadvantages such as high product weight, poor odor VOC performance, and complicated foaming process. The carpet with surface blanket + felt secondary molding process has problems such as poor VOC performance and high equipment investment costs.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Embodiment 1 D2JBI carpet production method

[0021] The method of molding the car carpet sound insulation pad at one time, the steps are as follows:

[0022] (1) Felt forming: Lay the materials in the order of hard layer felt, PE film and soft layer felt from top to bottom, and use hot steam forming mold to press and form the felt semi-finished product; the forming temperature is 160°C, and the forming time is 85s , the molding pressure is 11MPa, the steam time is 70s, the steam pressure is 0.6MPa, and the steam temperature is 190℃;

[0023] (2) Cooling and shaping: put the semi-finished felt that is pressed and formed in step (1) into the cooling tool for cooling, and the cooling time is 70s;

[0024] (3) Waterjet cutting of soft and hard layers: put the semi-finished felt that has been cooled and shaped in step (2) into a water cutting fixture, and cut the difference between the soft and hard layer felt and the surface blanket; the cutting water pressure is 40,000ps...

Embodiment 2

[0033] The method of molding the car carpet sound insulation pad at one time, the steps are as follows:

[0034] (1) Felt forming: Lay the materials in the order of hard layer felt, PE film and soft layer felt from top to bottom, and use hot steam forming mold to press and form the felt semi-finished product; the forming temperature is 200°C, and the forming time is 95s , the molding pressure is 13MPa, the steam time is 80s, the steam pressure is 0.6MPa, and the steam temperature is 210℃;

[0035] (2) Cooling and shaping: Put the semi-finished felt that is pressed and formed in step (1) into the cooling tool for cooling, and the cooling time is 80s;

[0036] (3) Waterjet cutting of soft and hard layers: Put the semi-finished felt that has been cooled and shaped in step (2) into a water cutting fixture, and cut the difference between the soft and hard layer felt and the surface blanket; the cutting water pressure is 50,000psi, and the cutting The air pressure is 0.7MPa;

[00...

Embodiment 3

[0045] The method of molding the car carpet sound insulation pad at one time, the steps are as follows:

[0046] (1) Felt molding: Lay the materials in the order of hard layer felt, PE film and soft layer felt from top to bottom, and use hot steam forming mold to press and form the felt semi-finished product; the molding temperature is 160-200 °C, and the molding time The molding pressure is 90s, the molding pressure is 12MPa, the steam time is 75s, the steam pressure is 0.6MPa, and the steam temperature is 200℃;

[0047] (2) Cooling and shaping: Put the semi-finished felt that is pressed and formed in step (1) into the cooling tool for cooling, and the cooling time is 75s;

[0048] (3) Waterjet cutting of soft and hard layers: Put the semi-finished felt that has been cooled and shaped in step (2) into a water cutting fixture, and cut the difference between the soft and hard layer felt and the surface blanket; the cutting water pressure is 45000psi, and the cutting The air pr...

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
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Abstract

The invention relates to a one-time forming method for an automobile carpet sound insulation pad and belongs to the technical field of automobile interior trim parts. The manner that a felt sound insulation pad (PET felt) is arranged at the lower portion and a face carpet is arranged at the upper portion (PET and a PE adhesive film are compounded) is mainly adopted, and the product of an automobile carpet is manufactured through felt forming, cooling sizing, soft and hard layer water jet cutter cutting, EPP embedding assembling, face carpet attaching, assembly water jet cutter cutting, accessory installing and checking boxing. By means of the method, technological processes are simple, the input of the production link and the input of tools are reduced, the labor cost is reduced, the problems that a carpet manufactured through a traditional technology is poor in VOC and high in weight are solved, the design requirement for the overall small weight is met, the overall VOC performance isimproved, no harmful substance is generated in the production process, and the automobile carpet sound insulation pad belongs to an environment-friendly product. By means of the one-time forming method, the indexes that the carpet is small in weight and good in VOC performance are achieved, noise in an automobile body is effectively lowered, the overall acoustic design requirement is met, and theinternational leading edge level is achieved.

Description

technical field [0001] The invention relates to a method for one-time molding of an automobile carpet sound-insulating pad, in particular to an automobile sound-insulating pad installed at the bottom of an automobile interior for sound absorption, sound insulation and comfort enhancement, and belongs to the technical field of automobile interior decorations. Background technique [0002] Car carpets are generally installed at the bottom of the car interior to play the role of sound absorption, sound insulation and increased pedaling comfort. In the era of more and more pursuit of high performance, environmental protection, energy saving, lightweight, and individualization, the interior of a car, like the shape of a car, has become an important factor for people to choose a car. Therefore, the requirements for automotive interior parts are getting higher and higher. In the prior art, carpets are generally made by the secondary molding process of surface blanket+EVA+PU foam o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C65/10B29C65/48B29L31/58
Inventor 仓弘杨
Owner WUXI GISSING AUTO PARTS CO LTD
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