KR102022309B1 - The method for preparing Polyester nonwoven fabric having improved strength - Google Patents
The method for preparing Polyester nonwoven fabric having improved strength Download PDFInfo
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- KR102022309B1 KR102022309B1 KR1020130149872A KR20130149872A KR102022309B1 KR 102022309 B1 KR102022309 B1 KR 102022309B1 KR 1020130149872 A KR1020130149872 A KR 1020130149872A KR 20130149872 A KR20130149872 A KR 20130149872A KR 102022309 B1 KR102022309 B1 KR 102022309B1
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- South Korea
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- nonwoven fabric
- melting point
- polyester
- present
- weight
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Classifications
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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
- D04H3/009—Condensation or reaction polymers
- D04H3/011—Polyesters
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/253—Formation of filaments, threads, or the like with a non-circular cross section; Spinnerette packs therefor
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/28—Formation of filaments, threads, or the like while mixing different spinning solutions or melts during the spinning operation; Spinnerette packs therefor
- D01D5/30—Conjugate filaments; Spinnerette packs therefor
- D01D5/34—Core-skin structure; Spinnerette packs therefor
-
- 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
- D04H3/14—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
- D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
- D10B2331/04—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyesters, e.g. polyethylene terephthalate [PET]
-
- 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
- D10B2401/00—Physical properties
- D10B2401/06—Load-responsive characteristics
- D10B2401/063—Load-responsive characteristics high strength
-
- 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
-
- 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
- D10B2509/02—Bandages, dressings or absorbent pads
- D10B2509/026—Absorbent pads; Tampons; Laundry; Towels
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Nonwoven Fabrics (AREA)
Abstract
The present invention relates to a method for producing a polyester nonwoven fabric having improved strength, and the polyester nonwoven fabric having improved strength according to the present invention has a melting point of 250 at the core side by distributing a distribution plate between the spin beam and the spinning nozzle. 50 to 90 parts by weight of the high-melting-point polyester polymer having a melting point of 150 ° C. or higher, and 10 to 50 parts by weight of the low-melting polyester polymer having a melting point of 150 to 220 ° C. or higher. Manufactured by spinning sheath and core filaments using one or more flattened detentions, laminating the spun filaments on a conveyor belt to form a web, and thermoforming the formed web It is characterized by being.
The method for producing a polyester nonwoven fabric having improved strength according to the present invention configured as described above significantly increases the tensile strength by specifying the shape of the mold and the properties and ratios of the polymers used, and also provides a low-melting polyester. Simultaneous spinning in the form to solve the conventional problem by solving the problem of radioactivity while giving excellent tensile strength compared to the existing product at the same weight that does not increase the thickness by supplementing the adhesiveness.
Description
The present invention relates to a method for producing a polyester nonwoven fabric having improved strength, and more particularly, using a flat mold having a flat ratio of at least a certain ratio in manufacturing a nonwoven fabric, and having a high melting point polyester and a low melting point polyester By spinning together, the present invention relates to a method for producing a polyester nonwoven fabric having improved strength compared to a general nonwoven fabric.
In general, nonwoven fabrics have been used for various purposes, such as hygiene, medical, agricultural, or industrial. In particular, nonwoven fabrics for industrial use require tensile strength to be a very important factor. In order to obtain a high tensile strength product, it is common to use a method of producing a weight per unit area. By the way, in the case of producing by increasing the weight as described above, there is a problem that it is difficult to apply to products that require a thin and strong because the thickness of the product increases at the same time, even though this problem may cause a variety of other related problems The solution for this is hardly suggested, but Korean Patent Laid-Open Publication No. 2011-0073109 discloses "a porous support having improved strength, a reinforced composite electrolyte membrane using the same, a membrane-electrode assembly and a fuel cell having the membrane" In the name of "to form a nonwoven web by electrospinning the polymer-containing spinning solution, and then to improve the strength of the nonwoven web by heat treatment or introduction of a crosslinking agent to prepare a reinforced porous support in the form of a nonwoven web made of a polymeric material" It is just starting.
Meanwhile, the filaments constituting the nonwoven web may use a flat yarn or a circular yarn, and the flat yarn may be used, for example, in Korean Patent Laid-Open Publication No. 1997-0027410, "Spun polyester polymer Next, in the manufacture of long-fiber nonwoven fabric by collecting, filling and heat-bonding with an embossing roll on a man-made conveyor, it is possible to maintain a constant strength by spinning by using a flat ball with a release degree of 7 to 9 instead of a circular ball during spinning. It discloses a manufacturing method that can produce a non-woven fabric thinner than that of, "Korean Patent Publication No. 2010-0074458" is made of polyester filament fibers having a flatness of 2 or more in cross-section, the weight per unit area 40 Non-woven fabric of about 100 g / m 2, and a content of a water repellent solid of 5 to about 5 g based on the weight of the non-woven fabric. A polyester-based nonwoven fabric comprising a water repellent applied to one or both surfaces of the nonwoven fabric such that it is 10% by weight, exhibiting a tear strength of at least 6 kg.f, a water resistance of at least 80 cmH 2 O, and a water vapor transmission rate of 8000 to 9100 g / m 2 · day. It is starting.
However, in the above-mentioned conventional techniques, little research has been conducted on the effect of the relationship between the tensile strength and the flat yarn or the circular yarn, or other factors on the tensile strength and the radioactivity of the nonwoven fabric.
Accordingly, the present inventors have completed the present invention by intensively studying the relationship between the flat yarn or the circular yarn and the tensile strength in relation to the improvement of the tensile strength of the nonwoven fabric, and the influence on the tensile strength and the radioactivity according to other nonwoven fabric manufacturing factors. .
Accordingly, the present invention has been made in view of the above-described conventional situation, and a main object of the present invention is to provide a polyester nonwoven fabric having improved strength without increasing the thickness of the nonwoven fabric and without degrading other physical properties. will be.
Another object of the present invention is to provide a manufacturing method that can more easily produce a nonwoven fabric having the above excellent characteristics.
The present invention may be aimed at achieving other objects which can be easily derived by those of ordinary skill in the art from the above and the general description of the present specification.
The purpose of the present invention described above, to solve the above-mentioned problems, the tensile strength is increased when using a flat sphere instead of the existing circular sphere, and also a low melting point polyester in the form of a hearth (Sheath-core) At the same time, by spinning to compensate for the adhesion to produce a product having excellent tensile strength compared to the existing product at the same weight, it was achieved by revealing that the problem of radioactivity can be solved.
Method for producing a polyester nonwoven fabric with improved strength of the present invention for achieving the above object;
A method of manufacturing a deep sheath nonwoven by placing a distribution plate between a spin beam and a spinning nozzle,
The core side is a high melting point polyester polymer having a melting point of 250 ° C. or higher, and the sheath side is a low melting polyester polymer having a melting point of 150 to 220 ° C. or higher. spinning the core-type filament,
Stretching the spun filament through an ejector and impinging on the impingement plate and laminating it on a continuous conveyor belt to form a web, and
Consists of fixing the formed web in whole or in part by thermocompression bonding,
The filament is characterized in that it is spun by using a flat use detent having a flat ratio of 3: 1 or more.
According to another configuration of the present invention, the thermocompression is characterized in that the thermocompression is carried out by passing through the two flat rolls or the thermocompression through the embossing roll.
According to another configuration of the present invention, the high melting point polyester and the low melting point polyester is characterized in that the weight ratio of 50:50 to 90:10 is prepared.
Polyester nonwoven fabric with improved strength of the present invention for achieving the above another object;
By distributing a plate between the spin beam and the spinning nozzle, the core side has 50 to 90 parts by weight of the high melting point polyester polymer having a melting point of 250 ° C. or higher, and the sheath side has a low melting point polyester having a melting point of 150 to 220 ° C. or more. 10 to 50 parts by weight of polymer, the polymer is directed toward the nozzle hole to spun sheath and core filaments using a flattening detent having a flat ratio of 3: 1 or more, and the spun filament is conveyed to a conveyor belt. Forming a web (web) by laminating on, characterized in that it is produced by thermocompression bonding the formed web.
According to another configuration of the present invention, the weight of the nonwoven fabric is characterized in that 10g / ㎡ to 300g / ㎡.
According to another configuration of the present invention, the fineness of the filament is characterized in that it has a fineness of 2 to 10de.
The polyester nonwoven fabric with improved strength of the present invention configured as described above and a method for producing the same significantly increase the tensile strength by specifying the shape of the mold and the properties and ratios of the polymers used, and furthermore, a polyester having a low melting point can be obtained. Simultaneous spinning in the form of ponchos to solve the problem of radiation by solving the problem of radioactivity while giving excellent tensile strength compared to the existing product at the same weight that does not increase the thickness by supplementing the adhesiveness.
EMBODIMENT OF THE INVENTION Hereinafter, this invention is demonstrated in detail by preferable embodiment. Prior to this, the following embodiments are presented by way of example only to more specifically describe the present invention, and do not represent all of the technical spirit of the present invention, various modifications that can be substituted for them at the time of the present application It should be understood that there may be equivalents and variations.
The polyester nonwoven fabric having improved strength according to a preferred embodiment of the present invention is made of a high melting point polyester having a melting point of 250 ° C. or higher and a low melting point polyester of 150 to 220 ° C. Simultaneously spinning in sheath-core form and forming into a web to form a nonwoven sheet through thermocompression bonding.
A method for producing a polyester nonwoven fabric having improved strength according to a preferred embodiment of the present invention is a method for producing a deep sheath nonwoven fabric by distributing a distribution plate between a spin beam and a spinning nozzle. It is made of an ester polymer, and the sheath side is made of a low melting polyester polymer having a melting point of 150 to 220 ° C. or higher, and the polymers are directed toward the nozzle hole to emit sheath and core filaments, and the ejected filaments are ejected. Stretched through and impinged on the impingement plate to be laminated on a continuous conveyor belt to form a web, and then the formed webs are combined, in whole or in part, by thermocompression bonding to fix the nonwoven fabric. In this case, the thermocompression may be performed by thermocompression by passing between two flat rolls, or by thermocompression through an emboss roll.
According to a preferred embodiment of the present invention, the filaments are spun using a flattened cap with a flat ratio of 3: 1 or greater. At this time, when the flatness ratio is 3: 1 or less or circular detention is used, the tensile strength in the longitudinal direction and the width direction is significantly lowered, which is not preferable.
According to another preferred embodiment of the present invention, the high melting point polyester and the low melting point polyester are produced with a weight ratio of 50:50 to 90:10. If the high melting point polyester exceeds 90% by weight, the radioactivity is not good, the effect of improving the strength is not great, it is difficult to use, on the contrary, even if it is less than 50 parts by weight, there is a difference in the effect with the product using more than that Not much
According to a preferred embodiment of the present invention, the weight of the nonwoven fabric according to the present invention may vary depending on the purpose of use, and is not particularly limited, but is preferably 10 g / m 2 to 300 g / m 2.
In addition, according to another preferred embodiment of the present invention, the fineness of the filament preferably has a fineness of 2 to 10 denier (denier), preferably less than 7.0 denier, more preferably less than 5.0 denier. . The reason for this is that in such fine islands, it is possible to obtain a nonwoven fabric which is very soft, excellent in elasticity and excellent in strength.
Hereinafter, the present invention will be described in more detail with reference to Examples, but the present invention is not limited thereto.
Example 1
The spinneret is a flat yarn with a flatness ratio of 10: 1, and a high melting point polyethylene terephthalate (hereinafter referred to as PET) having a melting point of 250 ° C. and a low melting point PET having a melting point of 220 ° C. have a high melting point: low melting point = Radiate as 85:15. The spun fibers are stretched through an ejector, impinge on a collision plate, and are randomly stacked on a conveyor belt. At this time, the conveyor weight is adjusted so that the unit weight is 30 g / m 2. The web thus formed was pre-bonded in calender rolls and thermocompressed in emboss rolls to produce a nonwoven fabric.
Example 2
Except for setting the mixing ratio of high melting point PET and low melting point PET to 90:10, the remaining method was prepared in the same manner as in Example 1.
Comparative Example 1
Except that the mixing ratio of high melting point PET and low melting point PET is 95: 5, the remaining method was made in the same manner as in Example 1.
Comparative Example 2
Except for setting the mixing ratio of high melting point PET and low melting point PET to 30:70, the remaining method was prepared in the same manner as in Example 1.
Comparative Example 3
Except that the spinneret using a general circular yarn, the remaining method was made in the same manner as in Example 1.
Experimental Example
The following properties were measured for the nonwoven fabrics produced according to each of the above Examples and Comparative Examples and the results are shown in Table 1 below:
1. Radioactive
×: Poor, △: Normal, ○: Good
2. Tensile Strength: Tensile strength was measured according to the method described in KSK 0521.
The tensile strength
(kg / 5cm)
The tensile strength
(kg / 5cm)
As can be seen in Table 1, in the case of Comparative Example 1 using the ratio of the low melting point PET fiber to 10 parts by weight or less, the radioactivity is not good, the effect of improving the strength is also difficult to use, on the contrary 30 parts by weight Even if it was abnormal, radioactivity was not good and there was not much difference with the product using 15 weight part.
In the present specification, only a few examples of various embodiments performed by the present inventors are described, but the technical idea of the present invention is not limited thereto, but may be variously modified and implemented by those skilled in the art.
Claims (6)
A distribution plate is placed between the spin beam of the nonwoven fabric and the spinning nozzle to produce an apical nonwoven fabric,
The core side is a high melting point polyester polymer having a melting point of 250 ° C. or higher, and the sheath side is a low melting polyester polymer having a melting point of 150 to 220 ° C. or higher. spinning the core-type filament,
Stretching the spun filament through an ejector and impinging on the impingement plate and laminating it on a continuous conveyor belt to form a web, and
After pre-bonding the formed web in the calender roll, it is composed of a step of bonding by fixing in whole or in part by thermocompression in the embossing roll,
The filament is spun using a flat use detent having a flat ratio of 3: 1 or more to have a fineness of 2 to 10 de, and a weight ratio of the high melting point polyester polymer and the low melting point polyester polymer is 50 to 90: It should be 10 to 50, wherein the thermocompression is performed by thermocompression by passing between two flat rolls or by thermocompression through an emboss roll, so that the weight of the nonwoven fabric is 10 g / m 2 to 300 g / m 2. Method for producing a polyester nonwoven fabric with improved strength.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020130149872A KR102022309B1 (en) | 2013-12-04 | 2013-12-04 | The method for preparing Polyester nonwoven fabric having improved strength |
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| Application Number | Priority Date | Filing Date | Title |
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| KR1020130149872A KR102022309B1 (en) | 2013-12-04 | 2013-12-04 | The method for preparing Polyester nonwoven fabric having improved strength |
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| Publication Number | Publication Date |
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| KR20150064934A KR20150064934A (en) | 2015-06-12 |
| KR102022309B1 true KR102022309B1 (en) | 2019-09-18 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100386744B1 (en) * | 1996-03-29 | 2003-08-21 | 도레이 가부시끼가이샤 | Nonwoven fabric for pleated filter and method for manufacturing the same |
| KR101097377B1 (en) * | 2008-12-24 | 2011-12-23 | 코오롱인더스트리 주식회사 | Polyester nonwoven fabrics and preparation method thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100227033B1 (en) | 1995-11-27 | 1999-10-15 | 구광시 | Manufacturing method of long staple non woven fabric |
| KR101279352B1 (en) | 2009-12-23 | 2013-07-04 | 한국화학연구원 | Porous substrate with enhanced strength, reinforced composite electrolyte membrane using the same, membrane-electrode assembly having the same and fuel cell having them |
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2013
- 2013-12-04 KR KR1020130149872A patent/KR102022309B1/en active IP Right Grant
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100386744B1 (en) * | 1996-03-29 | 2003-08-21 | 도레이 가부시끼가이샤 | Nonwoven fabric for pleated filter and method for manufacturing the same |
| KR101097377B1 (en) * | 2008-12-24 | 2011-12-23 | 코오롱인더스트리 주식회사 | Polyester nonwoven fabrics and preparation method thereof |
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| KR20150064934A (en) | 2015-06-12 |
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