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Lightweight felt material

A felt and lightweight technology, applied in the field of lightweight felt materials, can solve the problems of decreased sound-absorbing performance, less ability to improve sound-absorbing performance, etc., and achieve the effects of high-efficiency manufacturing, high sound-absorbing performance, excellent sound-absorbing and flame retardancy

Active Publication Date: 2015-07-22
株式会社富士工
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The fineness of the fibers used in this mat is relatively high, so it is not able to improve the sound-absorbing performance, and because the needle-punched fibers are transferred to the thickness direction, the overall sound-absorbing performance is bound to be easily reduced

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Next, although this invention is demonstrated based on an Example, this invention is not limited to an Example. for manufacturing figure 1 Lightweight felt material 1 shown, using image 3 The felt manufacturing device 7 shown is for 40% ultra-fine polyester fibers with a fineness of 0.75 denier, 15% hollow polyester fibers with a fineness of 15 deniers, and 25% low-melting point polyester fibers with a fineness of 4 deniers. Ester fibers and 20% polyester staple fibers with a fineness of 3 denier are mixed to form a weight per unit area of ​​150g / m 2 The two nets 14, 16. As the nonwoven sheet 5, use a weight per unit area of ​​40 g / m 2 Polyester melt-blown sheet (trade name: Kuraflex BTS0040EM, manufactured by Kuraray).

[0048] The nonwoven sheet 5 is held between the above-mentioned nets 14 and 16, and the whole is bonded by heating. The resulting lightweight felt material 1 has the non-woven sheet 5 positioned at the center of the felt material, and the thickne...

Embodiment 2

[0050] A lightweight felt material 1 having the same fiber composition as in Example 1 was manufactured by using a testing machine and using polyester regenerated fibers instead of polyester staple fibers having a fineness of 3 deniers in Example 1. In this lightweight felt material 1, the thickness of the upper hard cotton layer 2 is 19mm and the weight per unit area is 155g / m 2 , on the other hand, the thickness of the lower hard cotton layer 3 is 19mm and the weight per unit area is 155g / m 2 .

[0051] The resulting lightweight felt material 1 had a thickness of 38 mm and a weight per unit area of ​​350 g / m 2 . When the cost is considered, if it is about 20%, polyester regenerated fibers can be added instead of polyester staple fibers.

Embodiment 3

[0053] use image 3 In the felt manufacturing device 7 shown, the webs 14, 16 are composed of the same fibers as in Example 1, and the same nonwoven sheet 5 as in Example 1 is clamped by the two webs 14, 16, and the whole is heated and bonded to make a lightweight Quality felt material1. The resulting lightweight felt material 1 had a thickness of 38 mm and a weight per unit area of ​​407 g / m 2 .

[0054] The lightweight felt material 1 which is Example 2 and Example 3 was compared with the following products.

[0055] Comparison A: Melt-blown non-woven fabric (trade name: THINSULATE TC3303 300) with a thickness of 38mm (the weight per unit area is 356g / m 2 )

[0056] Comparison B: Melt-blown nonwoven fabric with a thickness of 38 mm (trade name: THINSULATE REGULAR 300)

[0057] Comparison C: Felt material with the same fiber composition as in Example 3 without interposing the nonwoven sheet 5 (thickness is 38 mm and weight per unit area is 386 g / m 2 )

[0058] The thickn...

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Abstract

This invention addresses the problem of providing a lightweight felt material that is soft, highly sound-absorbent and flame-retardant, and suitable as an interior material for an automobile or other vehicle, industrial material, clothing material, or another such material. This lightweight felt material (1) has a nonwoven sheet (5) interposed between two hard cotton layers (2, 3) so as to integrate the overall material, wherein: 20-80% of an ultrafine fiber having a fineness of 1.1 dtex or less, 10-60% of a hollow fiber for imparting bulkiness, and 10-60% of a low-melting-point fiber which melts when the overall material is thermally treated are fiber-blended in each of the two hard cotton layers (2, 3); and the nonwoven sheet (5) has a fiber diameter of 2-20 μm and a basis weight of 20-100 g / m2.

Description

technical field [0001] The present invention relates to a lightweight felt material having high sound absorption and flame retardancy, softness, and suitable for automobiles, vehicle interior materials, industrial materials, clothing, and the like. Background technique [0002] In automobiles, interior materials are usually attached to the trunk, trunk, etc., and striped suede (ベロア: vilour) or brushed suede (ディロア: dilour) are often used as the interior materials. A soft-touch epidermis. The skin sheet is bonded to plastic or felt on the lower side of the skin material, thereby improving sound absorption and reducing noise entering the vehicle interior from the trunk, and improving rigidity and formability while maintaining a certain strength. It is difficult to obtain the desired three-dimensional shape. [0003] The present applicant is already selling an interior material which is thermally press-molded after a common type of skin material and a felt sheet are entangled ...

Claims

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Application Information

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IPC IPC(8): B32B5/26D04H1/541D04H1/559B32B7/02
CPCB32B5/26B32B2307/102D04H1/56B32B2437/00B32B2307/3065B32B5/022B32B2307/304D04H1/54B32B2437/02B32B2250/20B32B2262/062B32B2605/00D04H1/559B32B7/02B32B2307/718
Inventor 仮屋英树
Owner 株式会社富士工
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