Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

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
View PDF11 Cites 7 Cited by
  • 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

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • 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.

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
Login to View More

PUM

PropertyMeasurementUnit
diameteraaaaaaaaaa
crystallization timeaaaaaaaaaa
Login to View More

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

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
Login to View More

Application Information

Patent Timeline
no application Login to View More
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
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com