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Vehicle Fender Liner And Method Of Manufacturing Same

A technology for fenders and inner linings, which is applied to vehicle components, chemical instruments and methods, and non-woven fabrics. It has sound-absorbing performance and other problems, and achieves the effects of excellent followability, improved sound-absorbing performance, impact resistance and damage resistance

Inactive Publication Date: 2012-04-25
HIROTANI CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the resin of the hardboard has no sound-absorbing properties, and the sound-insulating properties are low, so that engine noise and road noise cannot be sufficiently reduced
Moreover, since the molded product and hard fiberboard made of HDPE resin will change the impact sound such as the collision of small stones and the scattering and splashing of mud into a sound in the frequency band that is easy to hear, so this molded product and hard fiberboard Fibreboard has low noise protection performance

Method used

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  • Vehicle Fender Liner And Method Of Manufacturing Same
  • Vehicle Fender Liner And Method Of Manufacturing Same
  • Vehicle Fender Liner And Method Of Manufacturing Same

Examples

Experimental program
Comparison scheme
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Embodiment -

[0081] Next, examples of the present invention will be specifically described. Although the present invention will be specifically described below with examples, the present invention is not limited to the examples.

Embodiment 1

[0083] A PET fiber with a fiber diameter of 6.6T, a fiber length of 64mm, and a melting point of 260°C was used as the main fiber. A PET fiber with a fiber diameter of 6.6T, a fiber length of 51mm and a melting point of 110°C was used as the bonding fiber. Use LDPE resin with a density of about 0.92, a melting point of 110°C, a tensile strength of 14MPa, a melt index of 20g / 10min and a softening point of 100°C as the material for forming the water-resistant protective film.

[0084] The total mass per unit area becomes 600g / m 2 By mixing 60% by weight of main fibers and 40% by weight of binder fibers, these fibers were entangled by needle punching to produce a sheet-like mesh material. Heat the LDPE material to 130°C, so that the LDPE material flows on the sheet-like mesh material in the state of a highly viscous solution, and the mass per unit area becomes 200g / m 2 The LDPE material is covered on the surface of the sheet-like mesh material by the method, and then the LDPE m...

Embodiment 2

[0088] Compared with Example 1 in Example 2, the difference is that the mass per unit area of ​​the substrate layer is set to 700g / m 2 , the mass per unit area of ​​the water-resistant protective film is set to 200g / m 2 , other parts are all the same as in Example 1.

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Abstract

To provide a vehicle fender liner configured to easily form a solid shape and exhibit superior sound-absorption performance and excellent anti-icing, a fender liner 10 serving as a sound-absorption member to be attached to a vehicle includes a base-material layer 11 having sound-absorption function. The base-material layer 11 is formed into a solid shape of a fender liner by producing a sheet of a fibrous web 14 obtained by interlocking main fibers 12 and binder fibers 13 having a melting point lower than that of the main fibers 12, integrally providing a waterproof protective film of an LDPE resin, and then performing hot press mold.

Description

technical field [0001] The present invention relates to a fender inner liner for a vehicle and a manufacturing method thereof. The fender inner liner for a vehicle is installed on the inner surface of a wheel arch of a vehicle body, and is capable of colliding with foreign objects such as small stones that jump up when the vehicle is running. The impact generated by the vehicle body is absorbed to suppress impact sound, and the fender inner liner is easy to detach ice that has adhered to the fender inner liner. Background technique [0002] In general, a fender inner is known as a fender inner including a non-woven fabric in which many short fibers are entangled with each other (Patent Document 1). In such a fender liner made of non-woven fabric, since the countless voids formed between intertwined fibers absorb the impact caused by the collision of foreign objects, the fender liner has a durable Impact and noise resistance (especially sound absorption). However, the fende...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62D25/18B32B5/02B32B27/32D04H1/46D04H1/542G10K11/16D04H1/498D04H1/541
CPCB60R13/0861B32B5/08B32B27/12B32B2307/102B32B27/32B32B2307/718B32B2605/08B29C65/70B32B2262/0284B62D25/16B62D25/161B32B2250/02B32B2307/7265B32B2262/14B32B5/26B62D25/18B32B5/024B32B2323/046
Inventor 上原昌浩万治智宏谷川将行松尾恭太
Owner HIROTANI CO LTD