KR20140042364A - Spunbond nonwoven fabric and method for manufacturing the same - Google Patents
Spunbond nonwoven fabric and method for manufacturing the same Download PDFInfo
- Publication number
- KR20140042364A KR20140042364A KR1020120109060A KR20120109060A KR20140042364A KR 20140042364 A KR20140042364 A KR 20140042364A KR 1020120109060 A KR1020120109060 A KR 1020120109060A KR 20120109060 A KR20120109060 A KR 20120109060A KR 20140042364 A KR20140042364 A KR 20140042364A
- Authority
- KR
- South Korea
- Prior art keywords
- filaments
- polymer
- melting point
- web
- low melting
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
- B01D39/16—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
- B01D39/1607—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous
- B01D39/1623—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous of synthetic origin
-
- 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
- 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
- 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
- D04H3/153—Mixed yarns or filaments
-
- 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
- D10B2401/04—Heat-responsive characteristics
- D10B2401/046—Shape recovering or form memory
-
- 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
- D10B2503/00—Domestic or personal
- D10B2503/04—Floor or wall coverings; Carpets
- D10B2503/041—Carpet backings
-
- 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
- D10B2505/04—Filters
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Nonwoven Fabrics (AREA)
Abstract
Description
The present invention relates to a spunbond nonwoven fabric and a manufacturing method thereof, and more particularly, to a spunbond nonwoven fabric having a surface and a back surface having different physical properties and having excellent tensile strength, tear strength, and bulkiness. It is about.
Spunbond nonwovens have high productivity, high strength and low thickness and are used in many industrial fields. Spunbond nonwoven fabrics are often used in civil engineering and building applications because of their high strength and excellent drainage properties, and are also widely used in automobiles for their excellent durability at an affordable price. In particular, in recent years, it has been found that spunbonded nonwoven fabrics have excellent shape stability and dust particle collecting ability, and thus are widely used as filter materials. In addition, it is also widely used as a primary tufting carpet backing of various tufting carpets by using excellent uniformity and excellent high temperature form stability.
Applicant has applied for a method for obtaining a spunboard nonwoven fabric having high tensile strength as Korean Patent Application No. 10-2007-0134912, which is registered as No. 10-1079804 (hereinafter referred to as' 804 patent). The '804 patent forms a web in which a low melting point copolyester fiber and a regular polyester fiber are mixed through a mixed spinning of a low melting point copolyester and a regular polyester. It was intended to improve the tensile strength of the nonwoven fabric by melting the low melting copolyester fibers.
However, in order to melt the low melting copolyester fiber through the thermal bonding process, the thermal bonding process had to be carried out at least at the melting point of the low melting copolyester fiber, for example, at a temperature near 200 ° C.
Since the melting point of the low melting copolyester fibers is relatively lower than the melting point of regular polyester fibers but is still high when absolutely evaluated, high heating costs for the thermal bonding process are still a problem, as well as thermal bonding. The problem is that the heat applied to the web during the process causes damage to the regular polyester fibers, thereby lowering the tensile strength of the nonwoven fabric.
In addition, the final nonwoven fabric obtained by heat-treating the fibers constituting the nonwoven fabric by a high thermal bonding temperature has a hard touch and the tear strength, which is regarded as an important physical property, decreases.
In order to solve these problems, the present inventor has proposed a method of thermal bonding at a low temperature of 100 ℃ or less in the Republic of Korea Patent Application No. 10-2011-0146633. When the spunbond nonwoven fabric is manufactured in this manner, since the thermal bonding temperature is simply made at a low temperature of 100 ° C. or less, both the tensile strength and the tear strength are excellent. In addition, since the thermal bonding at a low temperature can be aimed at energy savings.
However, the thermal adhesion at too low temperature lowers the crystallinity of the fiber, resulting in a high thermal shrinkage associated with high temperature morphological stability. In addition, since the low melting polymer and the fibers produced by the composite spinning method are thermally bonded using calender rolls or emboss rolls, the adhesion points between the fibers are increased, and the low melting polymers exposed to the outside melt to smooth the surface of the nonwoven fabric. Lose. That is, the spunbond nonwoven fabric thus prepared has a high thermal contraction rate and a smooth surface, and thus, it is difficult to use the spunbond nonwoven fabric for use in applications exposed to high temperatures or for filters requiring bulkiness such as dust collection.
Accordingly, the present invention relates to a spunbond nonwoven fabric and a method for manufacturing the same, which can prevent problems caused by the above limitations and disadvantages of the related art.
One aspect of the present invention is to provide a spunbond nonwoven fabric having both a surface and a back surface having different physical properties and excellent in tensile strength, tear strength, and bulkiness.
Another aspect of the present invention is to provide a method for producing a spunbonded nonwoven fabric having both a surface and a back surface having different physical properties and excellent in tensile strength, tear strength, and bulkiness.
Other features and advantages of the invention will be set forth in the description which follows, or may be learned by those skilled in the art from the description.
According to one aspect of the invention as described above, the first web; And a second web on the first web, the first web comprising: a first matrix comprising a first polymer; And first filaments in the first matrix, the second web comprising: a second matrix comprising a second polymer; And second filaments in the second matrix, wherein a content ratio of the first polymer in the first web and a content ratio of the second polymer in the second web are different.
According to another aspect of the invention, forming a first web; Forming a second web on the first web; And heating the first and second webs for thermal bonding, wherein forming the first web comprises at least partially a first polymer having a melting point of 140 to 230 ° C. Forming melting point filaments; And forming first high melting point filaments comprising a first high melting point polymer having a higher melting point than the first polymer, wherein forming the second web has a melting point of 140 to 230 ° C. Forming second low melting filaments at least partially comprising a second polymer; And forming second high melting point filaments comprising a second high melting point polymer having a higher melting point than the second polymer, wherein the number ratio of the first low melting point filaments of the total filaments of the first web And a ratio of the number of the second low melting point filaments among the total filaments of the second web is different.
The foregoing general description of the present invention is intended to be illustrative of or explaining the present invention, but does not limit the scope of the present invention.
According to the present invention, a spunbond nonwoven fabric having a surface and a back surface having different tensile strengths, tear strengths, and bulkiness can be provided. For example, in the nonwoven fabric of the present invention comprising a first web on the front side and a second web on the back side, the nonwoven fabric when the first web has a higher low melting point polymer content ratio than the second web. Has a higher tensile strength than the back side, while the surface side of the nonwoven fabric is better than the back side when the first web has a lower low melting polymer content ratio than the second web. It shows tear strength and bulkiness.
Therefore, the spunbond nonwoven fabric of the present invention is convenient because it can be used by differently used in accordance with the use. In particular, the nonwoven fabric of the present invention can be advantageously used for preparing a filter requiring high bulkiness for dust collecting ability as well as being useful as a bubble paper for carpets requiring high tensile strength and tear strength.
Other effects of the present invention will be described in detail below along with the related technical configurations.
Hereinafter, embodiments of the spunbonded nonwoven fabric of the present invention and a manufacturing method thereof will be described in detail.
It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention. Therefore, the present invention encompasses all changes and modifications that come within the scope of the invention as defined in the appended claims and equivalents thereof.
As used herein, the term 'single spining' refers to a spinning method for producing one filament with one component.
As used herein, the term 'conjugate spinning' refers to a spinning method that allows one filament to form from two or more components. The filaments formed by such complex spinning may have a sheath-core structure, a side-by-side structure, or a sea-and-islands structure.
On the other hand, 'mixing and spinning' is a spinning method in which filaments are formed from the mixture after simple mixing of two or more materials, and 'combination spinning' in that the arrangement of each material in the generated filament cannot be controlled. There is a big difference.
Each web constituting the spunbond nonwoven fabric of the present invention is formed by forming respective filaments through single spinning and / or composite spinning and then mixing them. For example, the fusing of filaments can be performed by simultaneously performing the single spinning and / or the composite spinning using one detention.
Hereinafter, a spunbond nonwoven fabric according to an embodiment of the present invention will be described in detail.
The spunbond nonwoven of the present invention includes a first web and a second web on the first web. The first web includes a first matrix comprising a first polymer and first filaments in the first matrix. The second web includes a second matrix comprising a second polymer, and second filaments in the second matrix.
According to one embodiment of the invention, the first and second polymers have a melting point of 140 to 230 ℃, the first and second filaments are a polymer having a higher melting point than the first and second polymers Each is formed. Optionally, the first and second polymers may be the same polymer. For example, the first and second filaments are each formed of polyester, and the first and second polymers are polyester copolymers (eg, polyester monomers and adipic acid, isophthalic acid, or mixtures thereof). Copolymer).
According to one embodiment of the present invention, the content ratio of the first and second polymers in the first and second webs is 3 to 30 wt%, respectively. However, according to the present invention, the content ratio of the first polymer in the first web and the content ratio of the second polymer in the second web are different. According to one embodiment of the invention, the larger of the content ratio of the first polymer and the content ratio of the second polymer is at least 1.25 times greater than the smaller one.
For example, when the content ratio of the first polymer is 1.25 times or more of the content ratio of the second polymer, the spunbond nonwoven fabric is a filter for collecting dust in a state in which the second web side having excellent bulkiness becomes a surface. It may be used as a bubble paper for carpeting in a state where the first web side having excellent tensile strength is a surface.
According to an embodiment of the present invention in which the content ratio of the first polymer is greater than the content ratio of the second polymer, the content ratio of the first polymer in the first web is 5 wt% or more, and the second content in the second web. The content ratio of 2 polymers is 4 wt% or less. Alternatively, the content ratio of the first polymer in the first web may be 30 wt% or more, and the content ratio of the second polymer in the second web may be 20 wt% or less.
According to an embodiment of the present invention in which the content ratio of the second polymer is greater than the content ratio of the first polymer, the content ratio of the second polymer in the second web is 5 wt% or more, and the second content in the first web. The content ratio of one polymer is 4 wt% or less. Alternatively, the content ratio of the second polymer in the second web may be 30 wt% or more, and the content ratio of the first polymer in the first web may be 20 wt% or less.
Hereinafter, a method of manufacturing a spunbond nonwoven fabric according to an embodiment of the present invention will be described in detail.
A method of manufacturing a spunbond nonwoven fabric of the present invention includes forming a first web, forming a second web on the first web, and heating the first and second webs for thermal bonding. .
The forming of the first web comprises forming first low melting filaments at least partially comprising a first polymer having a melting point of 140 to 230 ° C., and a first high melting point than the first polymer. Forming first high melting point filaments comprising a melting point polymer.
The first high melting point polymer having a higher melting point (eg, 240 to 270 ° C.) than the first polymer may be a polyester including polyethylene terephthalate or polynaphthalene terephthalate.
The first polymer having a melting point of 140 to 230 ° C. may include a copolymer in which a polyester including polyethylene terephthalate or polynaphthalene terephthalate is copolymerized with adipic acid or isophthalic acid. have. In this case, by adjusting the amount of adipic acid or isophthalic acid in the copolymerization process so that the melting point of the first polymer is at least 30 ℃ lower than the melting point of the first high melting point polymer (that is, having a melting point of 140 ℃ to 230 ℃) Can be adjusted. Preferably, the melting point of the first polymer is adjusted to a level of 160 ° C to 220 ° C. According to one embodiment of the present invention, the amount of adipic acid or isophthalic acid is 10 to 40 mol / wt%.
The first low melting point filaments may be formed by a single spinning of the polyester copolymer, the first high melting point filaments may be formed through a single spinning of the polyester.
Alternatively, the first low melting point filaments may be formed by complex spinning of the first polymer (eg, the polyester copolymer) and the first high melting point polymer (eg, the polyester). have. In this case, the first low melting point filaments may be heart type filaments each including the first polymer as a supercomponent and the first high melting point polymer as a core component. Alternatively, the first low melting point filaments may be side-by-side filaments, or each island may include the first high melting point polymer as a sea component and the first high melting point polymer as a sea component. It may be sea-and-islands filaments.
According to an embodiment of the present invention, the first low melting point filaments and the first high melting point filaments may be mixed together while being simultaneously formed through a single mold.
Forming the first web further includes stretching the first low melting filaments and the first high melting point filaments, opening the stretched filaments, and stacking the opened filaments. can do.
The opening step may include discharging the stretched filaments, colliding the ejected filaments with a colliding plate, and collecting the filaments diffused due to a collision with the colliding plate (eg, on a conveyor belt). E).
The forming of the second web comprises forming second low melting filaments at least partially comprising a second polymer having a melting point of 140 to 230 ° C., and a second having a higher melting point than the second polymer. Forming second high melting point filaments comprising a high melting point polymer.
The second high melting point polymer having a higher melting point (eg, 240 to 270 ° C.) than the second polymer may be a polyester including polyethylene terephthalate or polynaphthalene terephthalate.
The second polymer having a melting point of 140 to 230 ° C. may include a copolymer in which a polyester including polyethylene terephthalate or polynaphthalene terephthalate is copolymerized with adipic acid or isophthalic acid. In this case, by adjusting the amount of adipic acid or isophthalic acid in the copolymerization process so that the melting point of the second polymer is 30 ℃ or more lower than the melting point of the second high melting point polymer (that is, to have a melting point of 140 ℃ to 230 ℃) Can be adjusted. Preferably, the melting point of the second polymer is adjusted to a level of 160 ° C to 220 ° C. According to one embodiment of the present invention, the amount of the adipic acid or isophthalic acid is 10 to 40 mol / wt%.
The second low melting point filaments may be formed by the single spinning of the polyester copolymer, the second high melting point filaments may be formed through the single spinning of the polyester.
Alternatively, the second low melting filaments may be formed by complex spinning of the second polymer (eg, the polyester copolymer) and the second high melting point polymer (eg, the polyester). have. In this case, the second low-melting filaments may be heart-shaped filaments each including the second polymer as a supercomponent and the second high melting polymer as a core component. Alternatively, the second low melting filaments may be side-by-side filaments, or each island may include the second high melting point polymer as a sea component and the second high melting point polymer as a sea component. It may be sea-and-islands filaments.
According to an embodiment of the present invention, the second low melting point filaments and the second high melting point filaments may be mixed together while being simultaneously formed through a single mold.
The forming of the second web may include: stretching the second low melting filaments and the second high melting point filaments, ejecting the stretched filaments, and crashing the discharged filaments into a collision plate; And collecting the filaments diffused due to the collision with the impingement plate on the first web on a conveyor belt.
As described above, the first and second webs are sequentially stacked on the conveyor belt, thereby forming a two-layer structure.
The first and second webs are then heated near the melting point of the first and second polymers for thermal bonding. Specifically, the first and second high melting point filaments are bonded by melting only the first and second polymers of the first and second webs using calender rolls, embossing rolls, or hot air. In this specification, the heating temperature refers to the temperature of calender roll, the temperature of embossing roll, or the temperature of hot air. On the other hand, it is more preferable to heat the first and second webs by using hot air in that the surface damage of the resulting nonwoven fabric can be prevented as much as possible.
If the first and / or second low melting filaments of the first and / or second webs are formed by single spinning, the entirety of the first and / or second low melting filaments is substantially melted to form a matrix. Form. As a result, the first and second high melting point filaments are present in the matrix and are thus bonded to each other.
On the other hand, when the first and / or second low melting point filaments of the first and / or second webs are formed by composite spinning, only the first and second polymers are rusted through a heating process for thermal bonding. While forming a matrix, the first and / or second high melting polymer components remain in the matrix while maintaining the filament shape. As a result, the first and / or second high melting point filaments as well as the first and / or second high melting point polymer components in the form of filaments are present in the matrix and are thus bonded to each other.
As described above, when the first and second polymers are prepared, their melting point is adjusted to be at least 30 ° C. below the melting point of the first and / or second high melting point polymer components. Otherwise, the heating temperature required for the thermal bonding of the first and second webs rises more than necessary, resulting in a decrease in tensile strength and tear strength of the finally produced nonwoven fabric and hardening of both surface properties of the nonwoven fabric. Is caused.
Optionally, prior to the heating process for thermal bonding, the first and second webs may be further heated for a preliminary thermal bonding at a temperature of at least 50 ° C. below the melting point of the first and second polymers. . The heating process for the preliminary thermal bonding may also be performed using calender rolls, embossing rolls, or hot air.
Meanwhile, according to the present invention, the number ratio of the first low melting point filaments of the total filaments of the first web and the number ratio of the second low melting point filaments of the total filaments of the second web are different. According to a preferred embodiment of the present invention, a larger ratio of the number ratio of the first low melting point filaments of the total filaments of the first web and the number ratio of the second low melting point filaments of the total filaments of the second web It is more than 1.5 times smaller.
In an embodiment in which the number ratio of the first low melting point filaments is greater than the number ratio of the second low melting point filaments, the number ratio of the first low melting point filaments is 30% or more and the number ratio of the second low melting point filaments is 20 It may be less than or equal to%. In this case, if the first low melting point filaments are formed by the single spinning of the first polymer, the content ratio of the first polymer in the first web is 15 wt% or more, and the first low melting point filaments are the first If formed by the complex spinning of a polymer and the first high melting point polymer, the content ratio of the first polymer in the first web may be 5 wt% or more. Further, if the second low melting filaments are formed by the single spinning of the second polymer, the content ratio of the second polymer in the second web is 10 wt% or less, and the second low melting filaments are the second polymer. If formed by the complex spinning of the second high melting point polymer and the content ratio of the second polymer in the second web may be 4wt% or less.
Meanwhile, in the embodiment where the number ratio of the second low melting point filaments is greater than the number ratio of the first low melting point filaments, the number ratio of the second low melting point filaments is 30% or more and the number ratio of the first low melting point filaments May be 20% or less. In this case, similarly to the above, if the second low melting filaments are formed by the single spinning of the second polymer, the content ratio of the second polymer in the second web is 15 wt% or more, and the second low melting filament If they are formed by the composite spinning of the second polymer and the second high melting point polymer, the content ratio of the second polymer in the second web may be 5 wt% or more. Further, when the first low melting point filaments are formed by the single spinning of the first polymer, the content ratio of the first polymer in the first web is 10 wt% or less, and the first low melting filaments are the first polymer. If formed by the composite spinning of the first high melting point polymer and the content ratio of the first polymer in the first web may be 4wt% or less.
That is, when both of the first and second low melting filaments are formed by single spinning or both through composite spinning, the number ratios of the first and second low melting filaments in the first and second webs are determined. By differently controlling the content ratios of the first and second polymers in the first and second webs can be adjusted differently (for example, the larger of the content ratios of the first and second polymers is 1.25 of the smaller ones). More than twice). According to a preferred embodiment of the present invention, the larger of the content ratios of the first and second polymers is 5wt% or more, and the smaller one is 4wt% or less.
Alternatively, to differently adjust the content ratios of the first and second polymers in the first and second webs, either one of the first and second low melting filaments is formed via single spinning and the other One may be formed through compound spinning.
As described above, the difference in content ratios of the first and second polymers in the first and second webs allows the first and second webs to have different tensile, tear and surface properties. For example, when the content ratio of the first polymer is greater than the content ratio of the second polymer, the first web has a relatively high tensile strength, a relatively low moat, and a relatively harder surface than the second web. While having a tactile feel, the second web has a relatively greater tear strength, a relatively large bulkiness, and a relatively softer surface feel than the first web.
As such, the spunbonded nonwoven fabric of the present invention including the first and second webs having different physical properties may be used for various purposes. For example, when the spunbond nonwoven fabric of the present invention is used as a filter material, a portion having a bulky structure (for example, a second web) can easily collect various dusts and foreign substances, and has a high strength and rigid structure. Other portions having (eg, the first web) can prevent deformation of the filter material.
The spunbonded nonwoven fabric of the present invention can also be used as a bubble paper for carpets. The part with the bulky structure (eg, the second web) allows the tufting needle to penetrate the nonwoven well without damaging the fibers of the nonwoven fabric, thereby preventing the strength of the bubble paper from dropping after the tufting process. It can play a role. On the other hand, the high-strength hard part (eg, the first web) serves to prevent the deformation of the bubble due to the harsh conditions such as high temperature and high tension applied during the dyeing and coating processes performed after the tufting process. Can be done. As such, the spunbonded nonwoven fabric of the present invention, including the first and second webs having different structures and properties and capable of performing different functions, may be suitably used for various applications.
Hereinafter, the present invention will be described in more detail with reference to examples and comparative examples. However, the following examples are only intended to help the understanding of the present invention and should not be understood as limiting the scope of the present invention.
Example One
Normal filaments were formed by melting normal polyester having an intrinsic viscosity (IV) of 0.655 and a melting point of 254 ° C. at 288 ° C. and discharging it through nozzles of the detention. In addition, a low melting point polyester having an intrinsic viscosity (IV) of 0.745 and a melting point of 214 ° C. prepared by adding about 19 mol / wt% of adipic acid was melted at 288 ° C., and then the other nozzles of the detention were removed. Low melting filaments were formed by ejecting through. At this time, the number ratio of the low melting filaments of the total filaments formed was 30%, respectively, the content ratio was 15wt%.
The filaments respectively formed by the single spinning were stretched at a speed of 5,000 m / min using an air ejector, diffused using a collision plate diffusion method, and collected on a conveyor belt to form a first web. Each of the regular filaments constituting the first web had a linear density of about 8.7 denier. In addition, each of the low melting filaments had a linear density of about 3.6 denier.
Subsequently, a second web was formed on the first web. Specifically, except that the number ratio and content ratio of the low melting point polyfilaments were 18% and 10wt%, respectively, the second web was formed on the first web on the conveyor belt in the same manner as the manufacturing method of the first web. Formed on. The linear density of each of the regular filaments of the second web was about 8.7 denier, and the linear density of each of the low melting filaments was about 5.0 denier.
The weight of the first and second webs was 50 gsm, respectively, and the speed of the belt of the conveyor was about 28 m / min.
Subsequently, the spunbond nonwoven fabric is completed by passing the first and second webs through calender rollers maintained at 150 ° C. and 30 N / cm, and then thermally bonding the first and second webs using hot air at 216 ° C. It was.
Example 2
The spunbond nonwoven fabric was prepared in the same manner as in Example 1 except that the number ratio and content ratio of the low melting filaments of the second web were 15% and 5wt%, respectively, and their respective linear densities were about 3.6 denier.
Example 3
When forming the first web, 1) low melting point filaments were formed through a composite spinning of the normal polyester and the low melting polyester as a core component and a sheath component instead of the single spinning, 2) the number ratio of the low melting filaments was 30%, 3) the content ratio of the low melting polyester in the first web was 5wt%, 4) the linear density of each of the regular filaments was about 8.7 denier, 5 A spunbond nonwoven fabric was prepared in the same manner as in Example 1 except that the linear density of each of the low melting point filaments was about 10 denier.
Example 4
When forming the first web, a nonwoven fabric was prepared in the same manner as in Example 1 except that the low melting point filaments had a number ratio and a content ratio of 41% and 20wt%, respectively.
Comparative Example One
A nonwoven fabric was prepared in the same manner as in Example 1 except that the second web was made in exactly the same manner as in the first web of Example 1.
Comparative Example 2
A nonwoven fabric was prepared in the same manner as in Example 2, except that the first web was manufactured in exactly the same manner as in the second web of Example 2.
Comparative Example 3
The number and content ratios of the low melting filaments of the second web were 22% and 15 wt%, respectively, and the linear density of the normal and low melting filaments of the second web was 8.7 denier and 5.4 denier, respectively. In the same manner, a nonwoven fabric was produced.
The thickness, tensile strength, and tear strength of the spunbond nonwoven fabrics prepared by the above examples and comparative examples were measured according to the JIS L 1906 standard, which is a method of measuring the long fiber spunbond nonwoven fabrics, and the results are shown in Table 1 below. Shown in
(mm)
Repair
rate(%)
Content ratio
(wt%)
Repair
rate(%)
Component Content Ratio
(wt%)
Claims (11)
Including a second web on the first web,
The first web,
A first matrix comprising a first polymer; And
Including first filaments in the first matrix,
The second web,
A second matrix comprising a second polymer; And
Second filaments in the second matrix,
Spunbond nonwoven fabric, characterized in that the content ratio of the first polymer in the first web and the content ratio of the second polymer in the second web is different.
Spunbond nonwoven fabric, characterized in that the larger of the content ratio of the first polymer and the content ratio of the second polymer is 1.25 times or more of the smaller.
The spunbond nonwoven fabric of claim 1, wherein the first and second polymers are identical.
The first and second polymers have a melting point of 140 to 230 ℃,
And the first and second filaments are each formed of a polymer having a higher melting point than the first and second polymers.
The first and second filaments are each formed of polyester,
The spunbond nonwoven fabric of claim 1, wherein the first and second polymers are polyester copolymers.
Forming a second web on the first web; And
Heating the first and second webs for thermal bonding;
Forming the first web,
Forming first low melting filaments at least partially comprising a first polymer having a melting point of 140 to 230 ° C .; And
Forming first high melting point filaments comprising a first high melting point polymer having a higher melting point than the first polymer,
Forming the second web,
Forming second low melting filaments at least partially comprising a second polymer having a melting point of 140 to 230 ° C .; And
Forming second high melting point filaments comprising a second high melting point polymer having a higher melting point than the second polymer,
And a ratio of the number of the first low melting point filaments of the total filaments of the first web to the number of the second low melting filaments of the total filaments of the second web different from each other.
The larger of the number ratio of the first low melting point filaments of the total filaments of the first web and the number ratio of the second low melting filaments of the total filaments of the second web is 1.5 times or more than the smaller one Spunbond nonwoven fabric manufacturing method.
The forming of the first low melting point filaments comprises the step of complex spinning the first polymer and the first high melting point polymer.
And the first low melting point filaments are deep sheath filaments each containing the first polymer as a super ingredient and the first high melting point polymer as a core component.
The forming of the second low melting point filaments comprises the step of complex spinning the second polymer and the second high melting point polymer.
And said second low melting point filaments are deep sheath filaments each containing the second polymer as a super ingredient and the second high melting point polymer as a core component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020120109060A KR20140042364A (en) | 2012-09-28 | 2012-09-28 | Spunbond nonwoven fabric and method for manufacturing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020120109060A KR20140042364A (en) | 2012-09-28 | 2012-09-28 | Spunbond nonwoven fabric and method for manufacturing the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| KR20140042364A true KR20140042364A (en) | 2014-04-07 |
Family
ID=50651570
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1020120109060A KR20140042364A (en) | 2012-09-28 | 2012-09-28 | Spunbond nonwoven fabric and method for manufacturing the same |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR20140042364A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20200299876A1 (en) * | 2017-09-22 | 2020-09-24 | Kolon Industries, Inc. | Nonwoven fabric having enhanced withdrawal force for carpet backing fabric and production method thereof |
-
2012
- 2012-09-28 KR KR1020120109060A patent/KR20140042364A/en not_active Application Discontinuation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20200299876A1 (en) * | 2017-09-22 | 2020-09-24 | Kolon Industries, Inc. | Nonwoven fabric having enhanced withdrawal force for carpet backing fabric and production method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101194359B1 (en) | Polyester nonwoven fabrics, its preparation method and carpet primary backing substrate | |
| US20100130084A1 (en) | Mixed continuous fiber non-woven fabric and method for producing the same | |
| KR101194358B1 (en) | Polyester nonwoven fabrics, its preparation method and carpet primary backing substrate | |
| JP5405926B2 (en) | Textile structures and textile products | |
| KR20130035414A (en) | Polyester nonwoven fabric and method for manufacturing the same | |
| KR102039074B1 (en) | Dimensional Stable Spunbonded Nonwoven for Primary Carpet Backing, and Method for Manufacturing the Same | |
| KR101802130B1 (en) | Method for Manufacturing Polyester Spunbond Nonwoven Fabric | |
| KR101079804B1 (en) | Polyester spunbond nonwovens and the preparation method thereof | |
| CN111655919A (en) | Spun-bonded non-woven fabric | |
| KR102037496B1 (en) | Improved Plasticity Spunbonded Nonwoven for Primary Carpet Backing, and Method for Manufacturing the Same | |
| KR20150074374A (en) | Improved Thermoform Spunbonded Nonwoven for Primary Carpet Backing, and Method for Manufacturing the Same | |
| KR20140042364A (en) | Spunbond nonwoven fabric and method for manufacturing the same | |
| JP3562667B2 (en) | Method for producing stretchable long-fiber nonwoven fabric | |
| KR20150113327A (en) | Spunbonded Nonwoven for Primary Carpet Backing Having Higher Pile Yarn Holding Strength Property | |
| JP2007297723A (en) | Formable filament nonwoven fabric | |
| EP1558800B1 (en) | Hollow fiber nonwoven sheet for fabric softener substrate | |
| KR101755034B1 (en) | Polyester Spunbonded Nonwoven for Primary Carpet Backing, and Method for Manufacturing the Same | |
| KR102617462B1 (en) | Non-woven fabric, carpet and method for preparing for the same | |
| TWI829062B (en) | Spunbond non-woven, carpet comprising the same and manufacturing method thereof | |
| KR102027425B1 (en) | manufacturing method of nonwoven for carpet backing with improved forming property | |
| KR102617463B1 (en) | Spunbond non-woven fabrics having sheath-core structure and manufacturing method thereof | |
| US20060234588A1 (en) | Improved abrasion resistance of nonwovens | |
| KR102431854B1 (en) | Spunbonded nonwoven and tile carpet using the same | |
| EP3476991B1 (en) | Method for manufacturing non-woven fabric for carpet foam backing | |
| JP5394667B2 (en) | Primary fabric for tufted carpet |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WITN | Withdrawal due to no request for examination |