KR20140106859A - Nonwoven fiber having an improved rewet and the manufacturing method thereof - Google Patents

Nonwoven fiber having an improved rewet and the manufacturing method thereof Download PDF

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Publication number
KR20140106859A
KR20140106859A KR1020130021022A KR20130021022A KR20140106859A KR 20140106859 A KR20140106859 A KR 20140106859A KR 1020130021022 A KR1020130021022 A KR 1020130021022A KR 20130021022 A KR20130021022 A KR 20130021022A KR 20140106859 A KR20140106859 A KR 20140106859A
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KR
South Korea
Prior art keywords
nonwoven fabric
long
fiber
section
spinning
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Application number
KR1020130021022A
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Korean (ko)
Inventor
박서진
김동욱
이정한
Original Assignee
도레이첨단소재 주식회사
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Priority to KR1020130021022A priority Critical patent/KR20140106859A/en
Publication of KR20140106859A publication Critical patent/KR20140106859A/en

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    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/005—Synthetic yarns or filaments
    • D04H3/007—Addition polymers
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/018—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the shape
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
    • D04H3/10—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between yarns or filaments made mechanically
    • D04H3/105—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between yarns or filaments made mechanically by needling
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
    • D04H3/14—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic yarns or filaments produced by welding
    • D04H3/147—Composite yarns or filaments
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06C—FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
    • D06C23/00—Making patterns or designs on fabrics
    • D06C23/04—Making patterns or designs on fabrics by shrinking, embossing, moiréing, or crêping
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2321/00—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D10B2321/02—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polyolefins
    • D10B2321/022—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polyolefins polypropylene
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2505/00—Industrial
    • D10B2505/20—Industrial for civil engineering, e.g. geotextiles
    • D10B2505/204—Geotextiles
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2509/00—Medical; Hygiene
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2300/00—Materials
    • E02D2300/0085—Geotextiles

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Nonwoven Fabrics (AREA)

Abstract

INDUSTRIAL APPLICABILITY The present invention provides a nonwoven fabric excellent in physical properties of the nonwoven fabric by optimizing the chemical and physical constitution of the nonwoven fabric in accordance with physical properties required in various fields such as medical use, sanitary use, living material, agricultural use or civil engineering construction, The present invention relates to a nonwoven fabric having a rewet and a method of manufacturing the same. Melting a polypropylene resin polymer and directing the polypropylene resin polymer toward a spinning nozzle hole to produce a long fiber, laminating the spinning long fiber on a porous continuous belt to form a web of composite long fiber, A process for producing a long-fiber polyolefin-based nonwoven fabric comprising a step of bonding and fixing a long-fiber web partially by an embossing method by thermocompression bonding or by needle punching, wherein the step of melt-spinning the molten polypropylene resin polymer Characterized in that the caged section of the nozzle is radiated using a triangular cross-section rather than a spinning process using a circular cage.
The nonwoven fabric having the above-described properties of the nonwoven fabric of the present invention having improved physical properties is formed such that the fibers have a triangular cross-section in the form of long fibers of a specific shape. Therefore, the conventional problems are solved, The present invention provides a nonwoven fabric which can be efficiently used in various fields such as medical, sanitary, living materials, agricultural or civil engineering buildings, and soundproofing.

Description

TECHNICAL FIELD The present invention relates to a nonwoven fabric having improved nonwoven fabric and a manufacturing method thereof,

The present invention relates to a nonwoven fabric having improved rigidity and a method of manufacturing the same, and more particularly, to a nonwoven fabric having improved chemical and physical properties of a nonwoven fabric to meet physical properties required in various fields such as medical, sanitary, living, agricultural, And more particularly to a nonwoven fabric having excellent rewet in improving the physical properties of the nonwoven fabric by optimizing the constitution and a manufacturing method thereof.

BACKGROUND ART [0002] Nonwoven fabrics have conventionally been used for various purposes and have been developed to have properties suitable for their intended use. Barrier nonwoven fabrics, for example, have been developed in a way that inhibits penetration of bacteria and other contaminants and can be used in disposable medical products such as surgical fabrics, disposable gowns, and the like, Nonwoven fabrics have also been proposed which form polymeric webs that inhibit repermeability.

Among various properties of the nonwoven fabric, the use of the nonwoven fabric has been variously developed, and a nonwoven fabric having such properties has been desired. Various methods have been proposed in order to meet such demands. For example, No. 2009-0105971 discloses a web printed on top of a composition that provides a colorant and / or skin health benefit, wherein the web can be a three dimensional fluid pervious polymeric web or a nonwoven web, Wherein the apertures are formed in a first surface of the web in a first plane of the web and extend from the side wall portions to a second surface in a second plane of the web, Or the lotion composition may be deposited on at least a portion of the second surface of the web.

However, the conventional nonwoven fabric improving the leathers including the above-described invention approaches mainly the structural improvement of the nonwoven fabric, and there is a demand for a more excellent and effective manufacturing method in terms of productivity and suppression of re-permeability of water .

Patent Document 1: Korean Patent Laid-Open Publication No. 2009-0105971

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a nonwoven fabric having excellent physical properties, which prevents the re-permeability of a conventional polypropylene filament nonwoven fabric, In order to provide a non-woven fabric capable of being worn.

Another object of the present invention is to provide a manufacturing method which can more easily manufacture a nonwoven fabric having improved physical properties of the nonwoven fabric having the above properties.

The present invention may also be directed to accomplish these and other objects, which can be easily derived by those skilled in the art from the overall description of the present specification, in addition to the above-mentioned and obvious objects.

It is an object of the present invention to provide a polyolefin-based resin having a long fiber cross-section in a specific shape rather than a circular shape, thereby solving the problems of the prior art, .

To achieve the above object, the present invention provides a method for producing a nonwoven fabric having improved rigidity, comprising the steps of:

Melting the polypropylene resin polymer and guiding the polypropylene resin polymer toward the spinneret hole to produce a long fiber, laminating the spinning long fiber on a porous continuous belt to form a web of composite long fiber, A method for producing a long-fiber polyolefin-based nonwoven fabric comprising a step of bonding and fixing a long-fiber web partially by an embossing method by thermocompression or by needle punching,

In the process of melt-spinning the molten polypropylene resin polymer, the nozzle cross-section is irradiated using a triangular cross-section nozzle rather than a spinning process using a circular nozzle.

According to another aspect of the present invention, the triangular cross section is characterized in that the distance from the center of gravity of the triangle to the end of each corner is 0.5 to 0.9 mm.

In order to achieve the above-mentioned other objects, there is provided a triangular-section nonwoven fabric having improved physical properties of the nonwoven fabric of the present invention;

A polypropylene resin polymer is melted and guided to a spinneret hole of a triangular cross section to produce long fibers, and the spinning long fibers are laminated on a porous continuous belt to form a web of composite long fibers The polypropylene nonwoven fabric is a long-fiber polypropylene nonwoven fabric obtained by bonding and fixing the composite filament web by an embossing method partially by thermocompression or by needle punching.

The nonwoven fabric having the above-described properties of the nonwoven fabric of the present invention having improved physical properties is formed such that the fibers have a triangular cross-section in the form of long fibers of a specific shape. Thus, the conventional problems are solved, The present invention provides a nonwoven fabric which can be efficiently used in various fields such as medical, sanitary, living materials, agricultural or civil engineering buildings, and soundproofing.

1 is an SEM photograph showing an example of a triangular cross-section of a long fiber according to a preferred embodiment of the present invention,
2 is a paraffin photograph of a triangular cross section of long fibers according to a preferred embodiment of the present invention.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings. However, it should be understood that the following preferred embodiments are merely illustrative of the present invention and are not intended to limit the scope of the present invention.

Fig. 1 is an SEM photograph showing an example of a triangular cross section of a long fiber according to a preferred embodiment of the present invention, and Fig. 2 is a photograph of a paraffin triangular cross section of a long fiber according to a preferred embodiment of the present invention.

As shown in the drawings, the rigid-improved nonwoven fabric of the present invention comprises a step of melting a polypropylene resin polymer and guiding the polypropylene resin polymer toward a spinneret hole to produce a long fiber, laminating the spun long fiber on a porous continuous belt A method for producing a long-fiber polyolefin-based nonwoven fabric comprising the steps of: forming a web of composite long-fiber; and fixing the composite long-fiber web by an embossing method partially by thermocompression bonding or by needle punching In the step of melt-spinning the molten polypropylene resin polymer, the nozzle cross-section is not a spinning process using a conventional round nozzle, but a special type of nozzle, that is, Lt; / RTI >

According to a preferred embodiment of the present invention, in the case of the triangular cross-section, it is possible to use a nose made to have a distance from the center of gravity of the triangle to the end of each corner of 0.5 to 0.9 mm, more preferably 0.55 to 0.8 mm have.

As described above, according to a preferred embodiment of the present invention, the nonwoven fabric according to the present invention applies a triangular cross-section by applying a modified shape of an existing circular nipple in melt spinning in a basic spunbond process using long-fiber polypropylene. In this process, optimization of temperature and stretching conditions for stable melt spinning has finally improved the resistance.

In addition, the method for producing a long-spun, spunbonded nonwoven fabric of the present invention includes a step of melt-spinning the fiber material composition to form a web.

The fiber material composition as described above is put into a spinning device and melt-spinned to form extruded filaments to form a web.

More specifically, the fiber material composition is put into a spinning device and melted, and the melted fiber material composition is spun by extruding the filament. The spinneret to be used at this time uses a spinneret having a triangular cross section as described above.

The molten part of the spinning device used for extruding the filament by melt spinning the fiber material composition has a reference temperature of 210 to 230 캜.

The extruded filaments are solidified by cooling air injected from the chamber and laminated on a conveyor belt, stretched by the pressure of the air injected from the upper part and the air sucked from the lower part of the conveyor belt, The web is formed by stacking.

In addition, the method for producing a long-spun, spunbonded nonwoven fabric of the present invention includes a step of heat-pressing the web.

In order to impart mechanical properties and shape stability to the laminated web as described above, the web is heated to 130 to 170 DEG C in an emboss roll having a constant bonding ratio and a calender roll having a smooth surface plate roll, To form a span bond. In addition, a spun bond can be formed by fixing using a needle punching method.

Hereinafter, the present invention will be described in more detail with reference to Examples, but it goes without saying that the scope of the present invention is not limited to these Examples.

Example

And the entire polypropylene web layer had a density of 18 g / m < 2 >. The polypropylene nonwoven fabric was made to have a denier level of 1 to 2 denier at 2000 to 4000 m / min using a triangular cross section, and a hydrophilic polypropylene nonwoven fabric was hydrophilized by fixing a hydrophilic oil on the nonwoven fabric surface. At this time, an equilateral triangular bar having a distance of 0.6 mm from the edge of each corner was used. A nonwoven fabric was produced using the manufactured yarn.

Comparative Example 1

A nonwoven fabric was produced in the same manner as in the above example, except that the nonwoven fabric was produced by using a circular nip.

Comparative Example 2

A nonwoven fabric was prepared in the same manner as in the above example, except that an equilateral triangular bar having a distance of 0.4 mm from the center of gravity of the triangle to the end of each corner was used.

Comparative Example 3

The nonwoven fabric was prepared in the same manner as in the above example, except that a triangular bevel having a distance of 1.0 mm from the center of gravity of the triangle to the end of each corner was used.

Experimental Example

The polypropylene nonwoven fabrics prepared according to the above Examples and Comparative Examples were compared with each other as follows.

1. REWET: A nonwoven fabric sample of 100 cm 2 was cut out, and 5 ml of water was dropped three times to make it wet. Then, an absorbent paper of 10 cm * 10 cm was placed on the paper, 2 kg of weight was placed on the paper, (The weight after the paper is wet-the weight before the paper is wet).

The lower the value, the better the water repellency and the better the performance.

division Example 1 Comparative Example 1 Comparative Example 2 Comparative Example 3 Lee (g) 0.09 0.31 0.08 0.26

As can be seen from the above table, as the size of the triangular cross section is smaller, the surface area is decreased and it is disadvantageous to increase. In the case of 0.4 mm of Comparative Example 2, 0.5 to 0.9 mm is most preferable .

Although the spunbond is described as a manufacturing technique for the release nonwoven fabric in the above embodiment, the present invention is also applied to spun lace, thermal bond, chemical bond, air through, meltblown and needle punching methods, .

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it should be understood that the same is by way of illustration and example only and is not to be taken by way of limitation in the embodiments herein. Accordingly, the invention is only defined by the scope of the claims set forth in the claims.

Claims (3)

Melting the polypropylene resin polymer and guiding the polypropylene resin polymer toward the spinneret hole to produce a long fiber, laminating the spinning long fiber on a porous continuous belt to form a web of composite long fiber, A method for producing a long-fiber polyolefin-based nonwoven fabric comprising a step of bonding and fixing a long-fiber web partially by an embossing method by thermocompression or by needle punching,
Characterized in that in the step of melt-spinning the molten polypropylene resin polymer, the nozzle cross-section is radiated using a triangular cross-section nozzle rather than a spinning process using a circular nozzle.
[3] The method of claim 1, wherein the triangular cross-section of the triangular cross-section has a distance of 0.5 to 0.9 mm from the center of gravity of the triangle to the end of each corner.
The nonwoven fabric according to claim 1 or 2, wherein the nonwoven fabric is obtained according to any one of claims 1 and 2.
KR1020130021022A 2013-02-27 2013-02-27 Nonwoven fiber having an improved rewet and the manufacturing method thereof KR20140106859A (en)

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