Melt-blown nonwoven fabric and use thereof

A technology of melt-blown non-woven fabrics and thermoplastic resins, which is applied in non-woven fabrics, textiles, papermaking, textiles, etc., to achieve high sound absorption, eliminate dust, and achieve lightweight effects

Active Publication Date: 2014-06-04
MITSUI CHEM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in any method, it is used by laminating with other materials, so there are still problems in terms of weight reduction and space saving

Method used

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  • Melt-blown nonwoven fabric and use thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0097] As a thermoplastic resin, a propylene homopolymer [MFR=1550g / 10min (measured at a temperature of 230°C under a load of 2.16kg in accordance with ASTM D1238), hereinafter referred to as PP] was used as a crystal nucleating agent to add 100 parts by weight to PP. A thermoplastic resin composition was obtained using 0.3 parts by weight of a phosphoric acid-based nucleating agent (NA11 manufactured by Adeka Corporation, hereinafter referred to as nucleating agent A). Extrude at 300°C using a melt-blown nonwoven fabric manufacturing device equipped with five small-diameter nozzles with a nozzle diameter of 0.15 mm and one large-diameter nozzle with a nozzle diameter of 0.6 mm as the minimum repeating unit for melt-blown spinning nozzles Thermoplastic resin composition, with heated air (300°C, 350Nm) blown from both sides of the spinning nozzle 3 / m / hour) after thinning and solidification, the fiber was collected at a distance of 40cm from the spinning nozzle, and the target ...

Embodiment 2

[0099] A melt-blown nonwoven fabric was obtained by the same method as that described in Example 1 except that the nozzle was changed to a spinning nozzle for melt-blown having uniform holes with a hole diameter of 0.6 mm. Table 1 shows the measurement results of the obtained meltblown nonwoven fabric.

Embodiment 3

[0101] Using the spinning nozzle for meltblowing used in Example 1, except that the addition amount of the nucleating agent A was 0.1 parts by weight relative to 100 parts by weight of PP, it was carried out in the same manner as in Example 1, and a meltblown nonwoven fabric was obtained. cloth. Table 1 shows the measurement results of the obtained meltblown nonwoven fabric.

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Abstract

This melt-blown nonwoven fabric is formed of thermoplastic resin fibers having an average fiber diameter of 0.1-10 mum, and has a bulk density of 36 kg / m3 or less and an air permeability of 3-100 cc / cm2 / sec as measured by a Frazier type method at a weight of 200 g / m2. This melt-blown nonwoven fabric has a low bulk density and excellent sound absorption performance, oil absorption performance, heat insulation performance, dust collection performance and filtration performance. Since this melt-blown nonwoven fabric can be formed of a single kind of a resin composition, this melt-blown nonwoven fabric is able to be easily produced and have a uniform quality free from variation in the characteristics in comparison to the cases where mixed fibers or composite fibers composed of a plurality of kinds of resins are used. A sound absorbing material of the present invention can be obtained by an easy process and exhibits excellent sound absorption performance. Consequently, this sound absorbing material is suitable for use as a sound absorbing material for living environments or transportation means. In addition, the sound absorbing material of the present invention can be reduced in weight and thickness.

Description

technical field [0001] The invention relates to a melt-blown nonwoven fabric with low bulk density and air permeability. Specifically, the present invention relates to a melt-blown nonwoven fabric having a low bulk density, which can be suitably used in various applications such as sound absorbing materials, oil absorbing materials, heat insulating materials, and filters. Background technique [0002] Living environments such as residences and offices, or transportation means such as aircraft, vehicles, and automobiles require a quiet environment that blocks external noise. Foams such as polyurethane foam and polyethylene foam that contain an air layer, felt, Sound-absorbing material formed of fibrous materials such as non-woven fabrics. These sound-absorbing materials are used according to the required performance, and fibrous materials such as nonwoven fabrics are used in consideration of required performance such as air permeability, light weight, and economical efficien...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04H3/16B32B5/26B60R13/08G10K11/162
CPCD01D5/0985D04H3/16D01F6/06D01F6/04D04H3/007G10K11/162B32B5/26B01J20/26B01J20/28038B32B5/022B32B2250/20B32B2262/0276B32B2307/102B32B2307/304B32B2605/00B32B2605/18D04H1/4291D04H1/56Y10T442/626C09K3/32
Inventor 饭场康三市川太郎津田武
Owner MITSUI CHEM INC
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