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Non-woven fabric board for exterior of vehicle and method for manufacturing same

A non-woven and object-board technology, which is applied to vehicle parts, textiles, papermaking, non-woven fabrics, etc., can solve the problems of strength degradation, component weight and material cost increase, and low bulkiness of cloth fabrics, etc., to improve thermoformability , Improve the bonding efficiency, improve the effect of mechanical properties

Inactive Publication Date: 2017-11-03
HYUNDAI MOTOR CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, an increase in areal density leads to an increase in component weight and material cost, and a decrease in thickness leads to deterioration of the sound absorption rate of compressed nonwoven fabrics
[0008] In addition, in the prior art, since the cross-section of the fibers is usually circular, the contact area between the fibers is small, so that there is a limitation in improving the cohesion, and during the molding heating process, when the predetermined When processed under high temperature conditions, the bulkiness of the cloth fabric is very small
In this way, only the surface of the network is melted, whereby the middle layer part remains fibrous, and as a result, the strength deteriorates

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
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  • Non-woven fabric board for exterior of vehicle and method for manufacturing same
  • Non-woven fabric board for exterior of vehicle and method for manufacturing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0077] PET fibers as non-circular cross-section matrix fibers and non-circular cross-section binder fibers including low-melting PET fibers were used in a weight ratio of 6:4, and non-circular cross-section binder fibers were produced using conventional production processes for thermally bonded non-woven fabrics. Fabric board. The nonwoven fabric sheet is formed to have a thickness of 2 mm and an areal density of 1,200 g / m 2 .

[0078] As the non-circular cross-section matrix fiber and non-circular cross-section binder fiber as described above, fibers having a W-shaped cross-section produced by melt spinning with a W-shaped spinneret were used, and a crimp number of 9.8 was used. ea / inch, a fiber with a non-circularity of 2.6 and a linear density of 7 denier.

Embodiment 2

[0080] PET fibers as non-circular cross-section matrix fibers and non-circular cross-section binder fibers including low-melting PET fibers were used in a weight ratio of 6:4, and non-circular cross-section binder fibers were produced using conventional production processes for thermally bonded non-woven fabrics. Fabric board. The nonwoven fabric sheet is formed to have a thickness of 2 mm and an areal density of 1,200 g / m 2 .

[0081] As the non-circular cross-section matrix fiber and non-circular cross-section binder fiber as described above, fibers having a W-shaped cross-section produced by melt spinning with a W-shaped spinneret were used, and a crimp number of 9.8 was used. ea / inch, fibers with a non-circularity of 2.6, and fibers with a linear density of 14 denier were used as non-circular cross-section matrix fibers, and fibers with a linear density of 7 denier were used as non-circular cross-section binder fibers.

Embodiment 3

[0083] PET fibers as non-circular cross-section matrix fibers and non-circular cross-section binder fibers including low-melting PET fibers were used in a weight ratio of 6:4, and non-circular cross-section binder fibers were produced using conventional production processes for thermally bonded non-woven fabrics. Fabric board. The nonwoven fabric sheet is formed to have a thickness of 2 mm and an areal density of 1,200 g / m 2 .

[0084] As the non-circular cross-section matrix fiber and non-circular cross-section binder fiber as described above, fibers having a W-shaped cross-section produced by melt spinning with a W-shaped spinneret were used, and a crimp number of 9.8 was used. ea / inch, fibers with a non-circularity of 2.0, and as non-circular cross-section matrix fibers, fibers with a linear density of 14 denier were used as non-circular cross-section matrix fibers, and fibers with a linear density of 7 denier were used as Non-circular cross-section bonded fibers.

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Abstract

The present invention relates to a non-woven fabric board for an exterior of a vehicle and a method for manufacturing the same. The non-woven fabric board includes: a matrix fiber having a non-circular cross-section and an adhesive fiber having non-circular cross-section. The matrix fiber may be included in an amount of about 50 wt % or greater based on the total weight of the non-woven fabric board. The matrix fiber and the adhesive fiber may have a linear density of about 6 to 15 denier and a degree of the non-circular shape of about 1.3 to 3.0. The non-woven fabric board for an exterior of a vehicle has a substantially increased specific surface area by using the non-circular cross-section fibers, improved adhesion efficiency between fibers, and substantially improved mechanical properties. In addition, heat moldability thereof is improved, weight thereof is reduced, and the sound-absorbing performance thereof is substantially improved.

Description

technical field [0001] The present invention relates to a nonwoven fabric panel for the exterior of a vehicle and a method for its manufacture. The non-woven fabric panel can achieve significantly improved rigidity and sound absorption performance. Background technique [0002] During the driving process of the vehicle, external noise enters the interior of the vehicle through various paths. In particular, noise caused by friction between tires and the ground, noise generated by the flow of high-temperature and high-pressure combustion gas released from the exhaust system, mechanical noise caused by the operation of the engine system, etc., enter the interior of the vehicle and are transmitted to passengers To the ear, these noises dampen the comfort and quietness of the vehicle. [0003] For the comfort and quietness of the vehicle, components such as under covers and wheel guards have been installed to block road noise in the underside of the vehicle while driving and to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04H1/4382D04H1/4258D04H1/4291D04H1/4334D04H1/4342D04H1/435D04H1/541D04H1/544D04H1/55D04H1/551
CPCD04H1/4258D04H1/4291D04H1/4334D04H1/4342D04H1/435D04H1/4382D04H1/541D04H1/544D04H1/55D04H1/551D04H1/43912D04H1/43918D04H1/43914D01D5/253D04H1/4282D04H1/4326D04H1/46D04H3/105B60R13/0861D01D5/34D04H3/007D04H3/011D04H3/018D04H3/12G10K11/162B60R13/08D04H13/00D10B2401/062D10B2401/041D10B2505/12D04H3/102D10B2321/021D10B2321/022D10B2331/04
Inventor 李廷勖
Owner HYUNDAI MOTOR CO LTD
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