WO2022265221A1 - 멜트블로운 부직포, 이를 포함하는 다층구조 스펀본드 부직포 및 이의 제조방법 - Google Patents
멜트블로운 부직포, 이를 포함하는 다층구조 스펀본드 부직포 및 이의 제조방법 Download PDFInfo
- Publication number
- WO2022265221A1 WO2022265221A1 PCT/KR2022/006232 KR2022006232W WO2022265221A1 WO 2022265221 A1 WO2022265221 A1 WO 2022265221A1 KR 2022006232 W KR2022006232 W KR 2022006232W WO 2022265221 A1 WO2022265221 A1 WO 2022265221A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- nonwoven fabric
- meltblown nonwoven
- meltblown
- prepared
- present
- Prior art date
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- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2605/00—Vehicles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
- B60R13/08—Insulating elements, e.g. for sound insulation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
- B60R13/08—Insulating elements, e.g. for sound insulation
- B60R13/0861—Insulating elements, e.g. for sound insulation for covering undersurfaces of vehicles, e.g. wheel houses
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- 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]
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- 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
- D10B2401/061—Load-responsive characteristics elastic
-
- 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
- D10B2401/062—Load-responsive characteristics stiff, shape retention
-
- 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
- D10B2505/12—Vehicles
Definitions
- the present invention relates to a meltblown nonwoven fabric, a multi-layered spunbond nonwoven fabric including the same, and a method for manufacturing the same, which is not only eco-friendly by using recycled polyester flakes, but also has excellent stiffness, sound absorption, and compressive elasticity, so that it can be used as a sound absorbing material for automobiles.
- a meltblown nonwoven fabric that can be used for automobile interior materials requiring stiffness, sound absorption, and compressive elasticity such as automobile wheel guards and trunk trims
- a multi-layered spunbond nonwoven fabric including the same and a method for manufacturing the same.
- EVA ethylene vinyl acetate
- PE polypropylene
- Most of these parts are waste parts generated after automobile scrapping, defective products generated in the manufacturing process, and scrap generated after product molding are not recycled and are treated as heat sources in places such as cement firing or cogeneration plants.
- wheel guard materials are being converted from existing olefin-based polymer injection molding products to non-woven composite products using fibers.
- it has limitations in generalization due to the problem of increasing the cost of parts compared to olefin-based polymer molded products.
- the surface weight of general automobile wheel guard nonwoven fabric is 800 ⁇ 1600 g per square meter, but the use of such nonwoven fabric is more expensive than the existing injection type and the manufacturing process is complicated, so the manufacturing cost of parts increases, which is limited to luxury vehicles. is being applied
- Conventional Korean Patent Publication No. 2013-0005593 relates to a sound absorbing and insulating material manufactured through a process of finely pulverizing waste sheets, mixing polyester fibers, low melting point polyester fibers, polypropylene fibers, and hemp with the pulverized product obtained through the pulverization, and then cutting them.
- rigidity is insufficient because materials having different shapes are combined with a low melting point polyester binder when manufacturing by mixing urethane foam with polyester fibers.
- there is a needle punching process in the process but the fibers are entangled rather than urethane foam and fibers, so the overall stiffness of the recycled sound absorbent is insufficient. There was a problem.
- the present invention has been made to solve the above problems, and is not only eco-friendly by using recycled polyester flakes, but also has excellent stiffness, sound absorption and compressive elasticity, so that it is used for sound absorbing materials for automobiles, such as wheel guards and trunks of automobiles.
- An object of the present invention is to provide a meltblown nonwoven fabric that can be used for automotive interior materials requiring stiffness, sound absorption, and compressive elasticity such as trim, a multi-layered spunbond nonwoven fabric including the same, and a manufacturing method thereof.
- the method for producing a meltblown nonwoven fabric of the present invention is a first step of producing polyester flake powder by grinding polyester flake, a step of heating and crystallizing the polyester flake powder 2nd step, 3rd step of melting the crystallized polyester flake powder to produce a melt, and 4th step of spinning the melt to produce a meltblown fiber and laminating the prepared fiber to produce a meltblown nonwoven fabric can do.
- the melt prepared in the third step may include 0.3 to 3.0 mol% of isophthalic acid (IPA).
- IPA isophthalic acid
- the polyester flake is selected from polyethylene terephthalate (PET) flakes, polytetramethylene terephthalate (PTT) flakes, polybutylene terephthalate (PBT) flakes and polypropylene (PP) flakes. One or more may be included.
- PET polyethylene terephthalate
- PTT polytetramethylene terephthalate
- PBT polybutylene terephthalate
- PP polypropylene
- the flake powder prepared in the first step may have an average particle size of 1 to 10 mm.
- the heating in the second step may be performed at a temperature of 100 to 180 °C.
- the melt prepared in the third step may have an intrinsic viscosity (IV) of 0.40 to 0.60 dl/g.
- the meltblown fibers prepared in the fourth step may have an average diameter of 0.5 to 20 ⁇ m.
- the meltblown nonwoven fabric prepared in the fourth step may have a basis weight of 100 to 900 gsm.
- the meltblown nonwoven fabric of the present invention may include 0.3 to 3.0 mol% of isophthalic acid (IPA) and have a basis weight of 100 to 900 gsm.
- IPA isophthalic acid
- the meltblown nonwoven fabric of the present invention may be manufactured by spinning a melt of polyester flake.
- the meltblown nonwoven fabric of the present invention may be composed of meltblown fibers having an average diameter of 0.5 to 20 ⁇ m.
- the meltblown nonwoven fabric of the present invention may have a stiffness of 1.3 to 1.5 MPa as measured according to KS M 6518.
- the multilayer structure spunbond nonwoven fabric of the present invention is a multilayer structure spunbond nonwoven fabric having a spunbond nonwoven fabric as an outermost layer and at least one meltblown nonwoven fabric layer as an inner layer, the meltblown nonwoven fabric layer of the present invention mentioned above. It may include a meltblown nonwoven fabric.
- the multi-layered spunbond nonwoven fabric may be for automobile sound absorbing materials.
- 'fiber' used herein means 'yarn' or 'thread', and refers to various types of conventional yarns and fibers.
- the meltblown nonwoven fabric of the present invention, the multi-layered spunbond nonwoven fabric including the same, and the manufacturing method thereof are not only eco-friendly by using recycled polyester flakes, but also have excellent stiffness, sound absorption and compressive elasticity, and thus are used as materials for sound absorbing materials for automobiles. It can be used for automotive interior materials that require stiffness, sound absorption, and compressive elasticity such as wheel guards and trunk trims of automobiles.
- the method for manufacturing the meltblown nonwoven fabric of the present invention includes first to fourth steps.
- polyester flake powder may be prepared by pulverizing polyester flakes.
- the polyester flake may include at least one selected from polyethylene terephthalate (PET) flakes, polytetramethylene terephthalate (PTT) flakes, polybutylene terephthalate (PBT) flakes, and polypropylene (PP) flakes. And, preferably, it may include polyethylene terephthalate (PET) flakes.
- polyester flakes of the present invention may be manufactured separately from waste carpets and waste felt scraps.
- the polyester flake powder prepared by grinding may have an average particle size of 1 to 10 mm, preferably 2 to 7 mm, and more preferably 3 to 6 mm. If the average particle size is less than 1mm, the generation of dust increases during the manufacturing process, which can cause contamination by dust or health problems for workers, and the presence of polyester flake powder in the dead space in EXT' during the melting process. There may be a problem in that fine particles enter, and thus carbides are generated, resulting in foreign matter in the PET melt, and if the particle size exceeds 10 mm, there may be a problem in that hunting occurs during EXT' operation due to the relatively large particle size of the powder.
- the polyester flake powder prepared in the first step may be crystallized by heating.
- the heating may be performed at a temperature of 100 to 180 °C, preferably at a temperature of 120 to 160 °C, and more preferably at a temperature of 130 to 150 °C. If the heating temperature is less than 100 ° C, the removal of moisture in the flake powder is uneven, resulting in variations in moisture content in the powder. There may be problems that may cause problems, and if the temperature exceeds 180 ° C, flakes agglomerate with each other in the crystallization step, resulting in uneven crystallization and drying, and in severe cases, equipment failure due to overload in the crystallization equipment. there is.
- a melt may be prepared by melting the polyester flake powder crystallized in the second step.
- the melt may contain 0.3 to 3.0 mol% of isophthalic acid (IPA), preferably 0.5 to 2.5 mol% of isophthalic acid (IPA), and if less than 0.3 mol% of isophthalic acid (IPA) is included, the increase in viscosity and melting point As the increase increases, the fineness of the fibers in the nonwoven fabric increases, and the solidification rate is relatively fast, which may cause a problem in that the strength of the nonwoven fabric decreases. If it is raised, there may be a problem in which a difference in part occurs in the sound absorption performance in the low frequency region.
- the melting temperature may have a temperature capable of melting the crystallized polyester flake powder, and may be preferably a temperature of 240 to 320 ° C.
- the melt prepared in the third step may have an intrinsic viscosity (IV) of 0.40 to 0.60 dl/g, preferably 0.45 to 0.55 dl/g. If the intrinsic viscosity of the melt is less than 0.40 dl/g, there may be problems with poor mobility due to uneven fineness and polymer drip due to low viscosity, and if it exceeds 0.60 dl/g, meltblown due to high viscosity Non-uniform flowability of the polymer in the nozzle may cause not only fineness variation, but also a problem of nozzle hole clogging, in which the hole of the meltblown nozzle is partially blocked due to high viscosity.
- IV intrinsic viscosity
- the melt prepared in the third step is spun to produce a meltblown fiber, and the prepared fibers are laminated to produce a meltblown nonwoven fabric. there is.
- meltblown fibers can be produced by solidifying by high-pressure hot air at 250 to 290 ° C, preferably 260 to 280 ° C.
- the prepared meltblown fibers may have an average diameter of 0.5 to 20 ⁇ m, preferably 1.0 to 10 ⁇ m. If the average diameter is less than 0.5 ⁇ m, the solidification rate is fast due to the fineness, so it is difficult to form nonwoven fabric, and even if some nonwoven fabric is formed, there may be a problem that the strength of the nonwoven fabric is insufficient, and if it exceeds 20 ⁇ m, the sound absorption performance in the high frequency region is insufficient. there may be
- the manufactured meltblown nonwoven fabric may have a basis weight of 100 to 900 gsm, preferably 500 to 900 gsm, and more preferably 600 to 800 gsm. If the basis weight of the meltblown nonwoven fabric is less than 100 gsm, there may be a problem of insufficient sound absorption performance in the low frequency region due to insufficient weight, and if it exceeds 900 gsm, there is an issue in assembly due to the increase in the volume of the nonwoven fabric, and the nonwoven fabric When the weight becomes high, there may be a problem in that the fuel efficiency of the vehicle decreases.
- meltblown nonwoven fabric of the present invention may be manufactured through the method for manufacturing the meltblown nonwoven fabric of the present invention described above.
- the meltblown nonwoven fabric of the present invention may be a meltblown nonwoven fabric manufactured by spinning a melt of polyester flake.
- the meltblown nonwoven fabric may include 0.3 to 3.0 mol%, preferably 0.5 to 2.5 mol% of isophthalic acid (IPA), and a basis weight of 100 to 900gsm, preferably a basis weight of 500 to 900gsm, and more Preferably, it may have a basis weight of 600 to 800 gsm.
- IPA isophthalic acid
- the basis weight of the meltblown nonwoven fabric of the present invention is 100 to 700 gsm, preferably 550 to 650 gsm, 0.3 to 0.9 mol% of isophthalic acid (IPA), preferably 0.3 to 0.7 mol%
- IPA isophthalic acid
- the basis weight of the meltblown nonwoven fabric of the present invention is 700 to 900 gsm, preferably 750 to 850 gsm, 1.5 to 3.0 mol% of isophthalic acid (IPA), preferably 2.3 to 2.7 mol% can do.
- the meltblown nonwoven fabric of the present invention may be composed of meltblown fibers having an average diameter of 0.5 to 20 ⁇ m, preferably 1.0 to 10 ⁇ m, and more preferably 1.0 to 5 ⁇ m.
- the meltblown nonwoven fabric of the present invention has an average diameter of 0.5 to 10 ⁇ m, preferably 0.5 to 650gsm.
- meltblown fabric of the present invention may be composed of meltblown fibers having an average diameter of 5 to 20 ⁇ m, preferably 8 to 15 ⁇ m, and more preferably 8 to 12 ⁇ m.
- meltblown nonwoven fabric of the present invention may have a stiffness of 1.3 to 1.5 MPa, preferably 1.33 to 1.45 MPa, when measured according to KS M 6518.
- the multilayer structure spunbond nonwoven fabric of the present invention may include the above-mentioned meltblown nonwoven fabric of the present invention in one or more layers.
- the multi-layered spunbond nonwoven fabric of the present invention is a nonwoven fabric having a spunbond nonwoven fabric as an outermost layer and at least one meltblown nonwoven fabric layer as an inner layer, wherein the meltblown nonwoven fabric layer includes the meltblown nonwoven fabric of the present invention. can do.
- the basic nonwoven fabric of the multilayer structure spunbond nonwoven fabric of the present invention may be composed of multiple layers in the form of spunbond nonwoven fabric/meltblown nonwoven fabric/spunbond nonwoven fabric, wherein the spunbond nonwoven fabric layer forming the outer layer has one or more layers. It can be composed of, and the internal meltblown nonwoven fabric layer can also be composed of one or more layers, so the number of layers is not limited.
- SMS-based nonwoven fabric Such a multi-layered spunbond nonwoven fabric of the present invention may be referred to as "SMS-based nonwoven fabric".
- meltblown nonwoven fabric of the present invention can be used for sound absorbing materials, preferably used for automobile sound absorbing materials.
- the multi-layered spunbond nonwoven fabric of the present invention can be used for sound absorbing materials, preferably for automobile sound absorbing materials.
- PET flakes prepared using isophthalic acid as one of the raw materials were pulverized to prepare PET flake powder having an average particle size of 4 mm.
- the PET melt was put into a meltblown spinneret, spun at a spinning temperature of 270 ° C, and then solidified by high-pressure hot air at 270 ° C to prepare a meltblown fiber having an average diameter of 1 ⁇ m, ,
- a meltblown nonwoven fabric which is a self-bonding nonwoven fabric having a basis weight of 600 gsm, was prepared by laminating the prepared fibers.
- a meltblown nonwoven fabric was prepared in the same manner as in Example 1. However, unlike Example 1, when the PET flake powder was crystallized in step (2), it was heated to a temperature of 90 ° C. to finally prepare a meltblown nonwoven fabric.
- a meltblown nonwoven fabric was prepared in the same manner as in Example 1. However, unlike Example 1, when crystallizing the PET flake powder in step (2), it was heated to a temperature of 190 ° C. to finally prepare a meltblown nonwoven fabric.
- meltblown nonwoven fabric was prepared in the same manner as in Example 1. However, unlike Example 1, when manufacturing meltblown fibers in step (4), meltblown fibers having an average diameter of 0.2 ⁇ m were prepared, and finally meltblown nonwoven fabric was manufactured.
- meltblown nonwoven fabric was prepared in the same manner as in Example 1. However, unlike Example 1, when manufacturing meltblown fibers in step (4), meltblown fibers having an average diameter of 10 ⁇ m were prepared, and finally meltblown nonwoven fabric was manufactured.
- PET flakes prepared using isophthalic acid as one of the raw materials were pulverized to prepare PET flake powder having an average particle size of 4 mm.
- the PET melt was put into a meltblown spinneret, spun at a spinning temperature of 270 ° C, and then solidified by high-pressure hot air at 270 ° C to prepare a meltblown fiber having an average diameter of 10 ⁇ m, ,
- a meltblown nonwoven fabric which is a self-bonding nonwoven fabric having a basis weight of 800 gsm, was prepared by laminating the prepared fibers.
- a meltblown nonwoven fabric was prepared in the same manner as in Example 6. However, unlike Example 6, when the PET flake powder was crystallized in step (2), it was heated to a temperature of 90 ° C. to finally prepare a meltblown nonwoven fabric.
- a meltblown nonwoven fabric was prepared in the same manner as in Example 6. However, unlike Example 6, when the PET flake powder was crystallized in step (2), it was heated to a temperature of 190 ° C. to finally prepare a meltblown nonwoven fabric.
- meltblown nonwoven fabric was prepared in the same manner as in Example 6. However, unlike Example 6, when manufacturing meltblown fibers in step (4), meltblown fibers having an average diameter of 1 ⁇ m were prepared, and finally meltblown nonwoven fabric was manufactured.
- meltblown nonwoven fabric was prepared in the same manner as in Example 6. However, unlike Example 6, when manufacturing meltblown fibers in step (4), meltblown fibers having an average diameter of 25 ⁇ m were prepared, and finally meltblown nonwoven fabric was manufactured.
- the stiffness of the meltblown nonwoven fabrics prepared in Examples 1 to 10 was measured by performing an analysis method according to KS M 6518 regulations, respectively.
- the sound absorption coefficients at 1000hz, 2000hz, 3150hz and 5000hz of each of the meltblown nonwoven fabrics prepared in Examples 1 and 2 were measured using ALPHA CABIN equipment, respectively. It was measured (however, the sound absorption test was conducted with a flat test piece of 840 mm x 840 mm without an edge frame, and five or more specimens were measured and the arithmetic average value was indicated.).
- Each of the meltblown nonwoven fabrics prepared in Examples 1 to 10 was cut into 100 mm x 100 mm to prepare a test piece, placed between steel plates of 100 x 100 x 0.8 mm, and a weight of 500 g was placed in the center of the upper steel plate. put In this state, it was left still under the following conditions, and the weight was removed and the condition was adjusted (condition control conditions: after leaving for 1 hour at 23 ⁇ 2 °C, 50 ⁇ 5% RH), the compressive modulus was measured (however, the thickness measurement method was A 100 x 100 mm test piece was placed on a specimen support, and a 120 x 120 mm 150 g pressure plate was placed on the test piece and compressed for 10 seconds. In addition, the thickness measurement point was the center point of each side of the pressure plate, and the arithmetic average value of the four points was used as the thickness. The measuring device was used according to ISO 5084).
- Example 2 Example 3
- Example 4 Example 5 Stiffness (MPa) 1.33 1.21 1.19 1.04 1.31 Absorption Coefficient 1000hz 0.24 0.23 0.24 0.15 0.29 2000hz 0.59 0.58 0.59 0.42 0.62 3150hz 0.84 0.82 0.82 0.79 0.63 5000hz 0.86 0.86 0.84 0.90 0.58 Compressive modulus (%) 32.25 32.21 31.19 31.95 32.05
- Example 10 Stiffness (MPa) 1.45 1.30 1.27 1.38 1.44 Absorption Coefficient 1000hz 0.21 0.19 0.20 0.24 0.22 2000hz 0.55 0.53 0.54 0.58 0.50 3150hz 0.85 0.84 0.83 0.89 0.57 5000hz 0.85 0.84 0.85 0.91 0.56 Compressive modulus (%) 36.02 35.67 35.72 34.98 35.11
- meltblown nonwoven fabric prepared in Example 2 had lower stiffness compared to the meltblown nonwoven fabric prepared in Example 1.
- meltblown nonwoven fabric prepared in Example 3 had lower stiffness compared to the meltblown nonwoven fabric prepared in Example 1.
- meltblown nonwoven fabric prepared in Example 4 compared to the meltblown nonwoven fabric prepared in Example 1 had lower stiffness and low frequency sound absorption coefficient.
- meltblown nonwoven fabric prepared in Example 7 had lower stiffness compared to the meltblown nonwoven fabric prepared in Example 6.
- meltblown nonwoven fabric prepared in Example 8 had lower stiffness compared to the meltblown nonwoven fabric prepared in Example 6.
- meltblown nonwoven fabric prepared in Example 9 had lower stiffness compared to the meltblown nonwoven fabric prepared in Example 6.
- the present invention relates to a meltblown nonwoven fabric, a multi-layered spunbond nonwoven fabric including the same, and a method for manufacturing the same, which is not only environmentally friendly by using recycled polyester flakes, but also has excellent stiffness, sound absorption, and compressive elasticity, making it suitable for sound absorbing materials for automobiles.
- a meltblown nonwoven fabric that can be used for automotive interior materials requiring stiffness, sound absorption, and compressive elasticity such as automobile wheel guards and trunk trims
- a multi-layered spunbond nonwoven fabric including the same and a method for manufacturing the same.
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- Chemical Kinetics & Catalysis (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- General Chemical & Material Sciences (AREA)
- Nonwoven Fabrics (AREA)
- Artificial Filaments (AREA)
Abstract
Description
구분 | 실시예 1 | 실시예 2 | 실시예 3 | 실시예 4 | 실시예 5 | |
강성(MPa) | 1.33 | 1.21 | 1.19 | 1.04 | 1.31 | |
흡음 계수 |
1000hz | 0.24 | 0.23 | 0.24 | 0.15 | 0.29 |
2000hz | 0.59 | 0.58 | 0.59 | 0.42 | 0.62 | |
3150hz | 0.84 | 0.82 | 0.82 | 0.79 | 0.63 | |
5000hz | 0.86 | 0.86 | 0.84 | 0.90 | 0.58 | |
압축탄성율(%) | 32.25 | 32.21 | 31.19 | 31.95 | 32.05 |
구분 | 실시예 6 | 실시예 7 | 실시예 8 | 실시예 9 | 실시예 10 | |
강성(MPa) | 1.45 | 1.30 | 1.27 | 1.38 | 1.44 | |
흡음 계수 |
1000hz | 0.21 | 0.19 | 0.20 | 0.24 | 0.22 |
2000hz | 0.55 | 0.53 | 0.54 | 0.58 | 0.50 | |
3150hz | 0.85 | 0.84 | 0.83 | 0.89 | 0.57 | |
5000hz | 0.85 | 0.84 | 0.85 | 0.91 | 0.56 | |
압축탄성율(%) | 36.02 | 35.67 | 35.72 | 34.98 | 35.11 |
Claims (13)
- 폴리에스터 플레이크(polyester flake)를 분쇄하여 폴리에스터 플레이크 분말을 제조하는 제1단계;폴리에스터 플레이크 분말을 가열하여 결정화시키는 제2단계;결정화시킨 폴리에스터 플레이크 분말을 용융시켜 용융물을 제조하는 제3단계; 및용융물을 방사하여 멜트블로운 섬유를 제조하고, 제조한 섬유를 적층시켜 멜트블로운 부직포를 제조하는 제4단계; 를 포함하고,상기 용융물은 0.3 ~ 3.0 mol%의 이소프탈산(IPA)을 포함하는 것을 특징으로 하는 멜트블로운 부직포의 제조방법.
- 제1항에 있어서,상기 폴리에스터 플레이크는 폴리에틸렌테레프탈레이트(PET) 플레이크, 폴리테트라메틸렌테레프탈레이트(PTT) 플레이크, 폴리부틸렌테레프탈레이트(PBT) 플레이크 및 폴리프로필렌(PP) 플레이크 중에서 선택된 1종 이상을 포함하는 것을 특징으로 하는 멜트블로운 부직포의 제조방법.
- 제1항에 있어서,상기 제1단계에서 제조한 플레이크 분말은 평균입자크기가 1 ~ 10mm인 것을 특징으로 하는 멜트블로운 부직포의 제조방법.
- 제1항에 있어서,상기 제2단계의 가열은 100 ~ 180℃의 온도로 수행하는 것을 특징으로 하는 멜트블로운 부직포의 제조방법.
- 제1항에 있어서,상기 제3단계에서 제조된 용융물은 0.40 ~ 0.60 dl/g의 고유점도(IV)를 가지는 것을 특징으로 하는 멜트블로운 부직포의 제조방법.
- 제1항에 있어서,상기 제4단계에서 제조한 멜트블로운 섬유는 0.5 ~ 20㎛의 평균직경을 가지는 것을 특징으로 하는 멜트블로운 부직포의 제조방법.
- 제1항에 있어서,상기 제4단계에서 제조한 멜트블로운 부직포는 100 ~ 900gsm의 평량을 가지는 것을 특징으로 하는 멜트블로운 부직포의 제조방법.
- 0.3 ~ 3.0 mol%의 이소프탈산(IPA)을 포함하고, 100 ~ 900gsm의 평량을 가지는 것을 특징으로 하는 멜트블로운 부직포.
- 제8항에 있어서,상기 멜트블로운 부직포는 폴리에스터 플레이크(polyester flake)의 용융물을 방사하여 제조된 것을 특징으로 하는 멜트블로운 부직포.
- 제8항에 있어서,상기 멜트블로운 부직포는 평균직경이 0.5 ~ 20 ㎛인 멜트블로운 섬유로 구성되는 것을 특징으로 하는 멜트블로운 부직포.
- 제8항에 있어서,상기 멜트블로운 부직포는 KS M 6518 규정에 의해 측정시, 1.3 ~ 1.5 MPa의 강성을 가지는 것을 특징으로 하는 멜트블로운 부직포.
- 스펀본드 부직포를 최외층으로 하고 내층에 적어도 하나 이상의 멜트블로운 부직포층을 갖는 다층구조 스펀본드 부직포에 있어서,상기 멜트블로운 부직포층은 제8항의 멜트블로운 부직포를 포함하는 것을 특징으로 하는 다층구조 스펀본드 부직포.
- 제12항에 있어서,상기 다층구조 스펀본드 부직포는 자동차 흡음재용인 것을 특징으로 하는 다층구조 스펀본드 부직포.
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JP2023577480A JP2024522739A (ja) | 2021-06-14 | 2022-05-02 | メルトブローン不織布、これを含む多層構造スパンボンド不織布およびその製造方法 |
EP22825149.2A EP4357505A1 (en) | 2021-06-14 | 2022-05-02 | Meltblown non-woven fabric, multi-layered spunbonded non-woven fabric comprising same, and method for manufacturing same |
US18/570,172 US20240279857A1 (en) | 2021-06-14 | 2022-05-02 | Meltblown non-woven fabric, multi-layered spunbonded non-woven fabric comprising same, and method for manufacturing same |
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JPH09228222A (ja) * | 1996-02-29 | 1997-09-02 | Unitika Ltd | 潜在捲縮能を有する繊維よりなる繊維積層物 |
KR20130005593A (ko) | 2011-07-06 | 2013-01-16 | 현대자동차주식회사 | 자동차 폐 시트의 폴리우레탄 폼을 이용한 흡차음재 제조 방법 및 그에 의해 제조된 흡차음재 조성물 |
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JP2015028230A (ja) * | 2013-06-27 | 2015-02-12 | アンビック株式会社 | 不織布製吸音材 |
KR102163351B1 (ko) * | 2019-11-08 | 2020-10-08 | 이경희 | 고강력 폴리에스터 장섬유 제조를 위한 재생 pet 칩 제조방법 |
KR20210024740A (ko) * | 2019-08-26 | 2021-03-08 | 현대자동차주식회사 | 내열성 및 흡음성이 우수한 복합 섬유웹 및 이의 제조방법 |
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JPH09228222A (ja) * | 1996-02-29 | 1997-09-02 | Unitika Ltd | 潜在捲縮能を有する繊維よりなる繊維積層物 |
KR20130005593A (ko) | 2011-07-06 | 2013-01-16 | 현대자동차주식회사 | 자동차 폐 시트의 폴리우레탄 폼을 이용한 흡차음재 제조 방법 및 그에 의해 제조된 흡차음재 조성물 |
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JP2015028230A (ja) * | 2013-06-27 | 2015-02-12 | アンビック株式会社 | 不織布製吸音材 |
KR20210024740A (ko) * | 2019-08-26 | 2021-03-08 | 현대자동차주식회사 | 내열성 및 흡음성이 우수한 복합 섬유웹 및 이의 제조방법 |
KR102163351B1 (ko) * | 2019-11-08 | 2020-10-08 | 이경희 | 고강력 폴리에스터 장섬유 제조를 위한 재생 pet 칩 제조방법 |
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JP2024522739A (ja) | 2024-06-21 |
EP4357505A1 (en) | 2024-04-24 |
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