WO2022163980A1 - 신축성 부직포, 신축성 부직포의 제조방법 및 신축성 부직포를 포함하는 물품 - Google Patents
신축성 부직포, 신축성 부직포의 제조방법 및 신축성 부직포를 포함하는 물품 Download PDFInfo
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- WO2022163980A1 WO2022163980A1 PCT/KR2021/016784 KR2021016784W WO2022163980A1 WO 2022163980 A1 WO2022163980 A1 WO 2022163980A1 KR 2021016784 W KR2021016784 W KR 2021016784W WO 2022163980 A1 WO2022163980 A1 WO 2022163980A1
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- nonwoven fabric
- parts
- nonwoven web
- stretchable
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- 239000004745 nonwoven fabric Substances 0.000 title claims abstract description 122
- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 26
- 238000011084 recovery Methods 0.000 claims abstract description 21
- -1 polypropylene Polymers 0.000 claims description 78
- 239000004743 Polypropylene Substances 0.000 claims description 67
- 229920001155 polypropylene Polymers 0.000 claims description 67
- 239000002994 raw material Substances 0.000 claims description 49
- 239000004750 melt-blown nonwoven Substances 0.000 claims description 26
- 239000004698 Polyethylene Substances 0.000 claims description 19
- 229920006026 co-polymeric resin Polymers 0.000 claims description 19
- 229920000573 polyethylene Polymers 0.000 claims description 19
- 239000000203 mixture Substances 0.000 claims description 9
- 238000009987 spinning Methods 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 7
- 239000010410 layer Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 3
- 239000002356 single layer Substances 0.000 claims description 3
- 238000004804 winding Methods 0.000 claims description 3
- 239000002131 composite material Substances 0.000 description 28
- 238000012545 processing Methods 0.000 description 19
- 238000004049 embossing Methods 0.000 description 13
- 238000002360 preparation method Methods 0.000 description 13
- 230000000052 comparative effect Effects 0.000 description 11
- 238000010276 construction Methods 0.000 description 4
- 230000005855 radiation Effects 0.000 description 4
- 238000011156 evaluation Methods 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 230000002285 radioactive effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007602 hot air drying Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Images
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
- D04H3/007—Addition polymers
-
- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D13/00—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches
- A41D13/05—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches protecting only a particular body part
- A41D13/11—Protective face masks, e.g. for surgical use, or for use in foul atmospheres
-
- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D13/00—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches
- A41D13/05—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches protecting only a particular body part
- A41D13/11—Protective face masks, e.g. for surgical use, or for use in foul atmospheres
- A41D13/1161—Means for fastening to the user's head
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B18/00—Breathing masks or helmets, e.g. affording protection against chemical agents or for use at high altitudes or incorporating a pump or compressor for reducing the inhalation effort
- A62B18/02—Masks
-
- 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
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2321/00—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D10B2321/02—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polyolefins
- D10B2321/021—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polyolefins polyethylene
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2321/00—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D10B2321/02—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polyolefins
- D10B2321/022—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polyolefins polypropylene
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2401/00—Physical properties
- D10B2401/06—Load-responsive characteristics
- D10B2401/061—Load-responsive characteristics elastic
Definitions
- a stretchable nonwoven fabric, a method for manufacturing the stretchable nonwoven fabric, and an article including the stretchable nonwoven fabric are disclosed. More specifically, a stretchable nonwoven fabric having excellent absorbency and cooling performance, a method for manufacturing the stretchable nonwoven fabric, and an article including the stretchable nonwoven fabric are disclosed.
- Most of the masks consist of a string-type ear band with the earring part for wearing.
- non-woven materials are applied to the earring part.
- the reason is that the string-type ear band causes pain when worn for a long time, but when a non-woven material is applied to the ear band part, it does not cause pain, so promotion activities can be conducted based on this.
- the reason for laminating the general nonwoven fabric and the elastic film is that the earring part must be elastic when wearing the mask so that it can adhere to the skin after wearing and perform the role of the mask.
- One embodiment of the present invention provides a stretchable nonwoven fabric having excellent CD-direction stretch recovery.
- Another embodiment of the present invention provides a method for manufacturing the elastic nonwoven fabric.
- Another embodiment of the present invention provides an article including the elastic nonwoven fabric.
- One aspect of the present invention is
- a stretchable nonwoven fabric having an elongation in the MD direction of 40% or less, an elongation in the CD direction of 300 to 400%, and a stretch recovery property in the CD direction of 70% or more.
- the stretchable nonwoven fabric may include a single layer or a multilayer spunbond nonwoven web.
- the spunbond nonwoven web may include 15 to 30 parts by weight of polypropylene and 70 to 85 parts by weight of a stretch raw material.
- the stretching raw material may include a copolymer resin containing 85 to 90 parts by weight of polypropylene having a density of 0.860 to 0.870 g/cm 3 and 10 to 15 parts by weight of polyethylene.
- the stretching raw material may include a copolymer resin containing 86.5 to 93 parts by weight of polypropylene and 7 to 13.5 parts by weight of polyethylene having a density of 0.860 to 0.870 g/cm 3 .
- the stretchable nonwoven may include a two-layer spunbond nonwoven web.
- the stretchable nonwoven fabric may include a pair of spunbond nonwoven webs and a meltblown nonwoven web interposed therebetween.
- the meltblown nonwoven web may include polypropylene.
- the content of the melt blown nonwoven web may be 30 parts by weight or less based on 100 parts by weight of the stretchable nonwoven fabric.
- the elastic nonwoven fabric may have a basis weight of 20 to 80 gsm.
- Another aspect of the present invention is
- It provides a method of manufacturing a stretchable nonwoven fabric comprising the step (S20) of shrinking the spunbond nonwoven web in the CD direction at a shrinkage rate in the CD direction of 50 to 65%.
- the method for manufacturing the stretchable nonwoven fabric includes 15 to 30 parts by weight of polypropylene and 70 to 85 parts by weight of a stretchable raw material so as to be laminated on the spunbond nonwoven web prepared in the step (S10) between the steps (S10) and (S20).
- the step (S12) of producing another spunbond nonwoven web by spinning the negative mixture may be further included.
- the method may further include the step of spinning polypropylene to produce a melt blown nonwoven web (14).
- the method of manufacturing the stretchable nonwoven fabric may further include a step (S30) of winding the spunbond nonwoven web shrunk in the CD direction in the step (S20) after passing it through a cooling roller.
- the cooling roller may be maintained at a temperature of 60 ⁇ 80 °C.
- the step (S20) may be performed by applying a tension of 20 to 50N in the MD direction while drying the spunbond nonwoven web prepared in the step (S10) with hot air at a temperature of 120 to 150°C.
- Another aspect of the present invention is
- the article may include a mask earband.
- the stretchable nonwoven fabric according to an embodiment of the present invention can be used for articles requiring elasticity, such as a mask ear band, by suppressing elongation in the MD direction and recovering at least 70% to its original shape after elongation in the CD direction.
- FIG. 2 is a diagram for explaining the definition of the term “CD-direction stretch recovery.”
- CD direction (cross direction) shrinkage processing rate means, as shown in FIG. 1, when the nonwoven fabric is pulled by applying tension in the MD direction (machine direction) while hot air drying, the nonwoven fabric is first It means the ratio of the length shrunk in the CD direction to the length.
- the “CD direction shrinkage processing rate” may be calculated according to Equation 1 below.
- CD direction shrinkage processing rate (%) (Li-Lf)/Li*100
- the stretchable nonwoven fabric according to an embodiment of the present invention has an elongation in the MD direction of 40% or less, an elongation in the CD direction of 300 to 400%, and a stretch recovery in the CD direction of 70% or more.
- the stretchable nonwoven fabric having elongation in the MD direction, elongation in the CD direction, and stretch recovery in the CD direction within the above ranges, respectively, was developed by the present inventors for the first time and is a novel nonwoven fabric that did not exist before.
- the stretchable nonwoven fabric may include a single layer or a multilayer spunbond nonwoven web.
- the spunbond nonwoven web may include 15 to 30 parts by weight of polypropylene and 70 to 85 parts by weight of a stretch raw material.
- a stretch raw material When the content of the polypropylene and the stretching raw material is within the above ranges, an elastic nonwoven fabric having an elongation in the MD direction of 40% or less, an elongation in the CD direction of 300 to 400%, and a stretch recovery in the CD direction of 70% or more can be obtained. have.
- the stretching raw material may include a copolymer resin containing 85 to 90 parts by weight of polypropylene having a density of 0.860 to 0.870 g/cm 3 and 10 to 15 parts by weight of polyethylene.
- the stretching raw material may include a copolymer resin containing 86.5 to 93 parts by weight of polypropylene and 7 to 13.5 parts by weight of polyethylene having a density of 0.860 to 0.870 g/cm 3 .
- the stretchable nonwoven may include a two-layer spunbond nonwoven web.
- the stretchable nonwoven fabric may be a composite nonwoven fabric having a multilayer structure in which two spunbond nonwoven webs are stacked up and down.
- the two spunbond nonwoven webs may have the same basis weight as each other.
- the stretchable nonwoven fabric may include a pair of spunbond nonwoven webs and a meltblown nonwoven web interposed therebetween.
- the stretchable nonwoven fabric may be a composite nonwoven fabric having a three-layer structure in which a first spunbond nonwoven web, a melt blown nonwoven web, and a second spunbond nonwoven web are sequentially stacked.
- the meltblown nonwoven web may include polypropylene.
- the meltblown nonwoven web may be composed of polypropylene.
- the content of the melt blown nonwoven web in the stretchable nonwoven fabric may be 30 parts by weight or less based on 100 parts by weight of the stretchable nonwoven fabric.
- a stretchable nonwoven fabric having an elongation in the MD direction of 40% or less, an elongation in the CD direction of 300 to 400%, and a stretch recovery in the CD direction of 70% or more can be obtained.
- the elastic nonwoven fabric may have a basis weight of 20 to 80 gsm (g/m 2 ).
- the method for manufacturing a stretchable nonwoven fabric comprises the steps of manufacturing a spunbond nonwoven web by spinning a mixture of 15 to 30 parts by weight of polypropylene and 70 to 85 parts by weight of a stretch raw material (S10) and the spunbond nonwoven web and shrinking in the CD direction at a CD direction shrinkage processing rate of 50 to 65% (S20).
- the elongation in the MD direction is 40% or less It is possible to obtain an elastic nonwoven fabric having an elongation in the CD direction of 300 to 400% and elastic recovery in the CD direction of 70% or more.
- the stretching raw material of the step (S10) may be the same as the stretching raw material of the above-described stretchable nonwoven fabric-related part.
- the step (S20) may be performed by applying a tension of 20 to 50N in the MD direction while drying the spunbond nonwoven web prepared in the step (S10) with hot air at a temperature of 120 to 150°C.
- the method for manufacturing the stretchable nonwoven fabric between the step (S10) and the step (S20), 15-30 parts by weight of polypropylene and 70-
- the method may further include spinning the mixture of 85 parts by weight to prepare another spunbond nonwoven web (S12).
- the spunbond nonwoven web manufactured in step S12 may have the same composition as the spunbond nonwoven web manufactured in step S10.
- the basis weight may be adjusted to be the same as the basis weight of the spunbond nonwoven web produced in the step (S10).
- the method may further include the step of spinning polypropylene to produce a melt blown nonwoven web (14).
- the basis weight may be adjusted to be 30% or less of the basis weight of the final stretchable nonwoven web.
- the method of manufacturing the stretchable nonwoven includes the step 12 or both the step 12 and the step 14, the method for manufacturing the stretchable nonwoven includes 50 to 65% of the spunbond nonwoven web.
- the method for manufacturing the stretchable nonwoven includes 50 to 65% of the spunbond nonwoven web.
- it may include a step (S20') .
- the method of manufacturing the stretchable nonwoven fabric may further include a step (S30) of winding the spunbond nonwoven web shrunk in the CD direction in the step (S20) after passing it through a cooling roller.
- the cooling roller may be maintained at a temperature of 60 ⁇ 80 °C.
- Another embodiment of the present invention provides an article including the elastic nonwoven fabric.
- the article may include a mask earband.
- a nonwoven fabric having elasticity in the CD direction was prepared while the elongation in the MD direction was maximally suppressed.
- a first spunbond nonwoven web and a second spunbond nonwoven web having a polypropylene content of 22 parts by weight and a stretch raw material content of 78 parts by weight were prepared, respectively.
- a copolymer resin containing 90 parts by weight of polypropylene and 10 parts by weight of polyethylene having a density of 0.865 g/cm 3 was used as a stretching raw material.
- the first spunbond nonwoven web and the second spunbond nonwoven web were laminated to form a composite having a multilayer structure, and then passed through a calender roll having an embossing ratio of 11% to perform bonding.
- a nonwoven fabric having elasticity in the CD direction was prepared while the elongation in the MD direction was maximally suppressed.
- a first spunbond nonwoven web and a second spunbond nonwoven web having a polypropylene content of 30 parts by weight and a content of a stretch raw material of 70 parts by weight were respectively prepared.
- a copolymer resin containing 90 parts by weight of polypropylene and 10 parts by weight of polyethylene having a density of 0.865 g/cm 3 was used as a stretching raw material.
- the first spunbond nonwoven web and the second spunbond nonwoven web were laminated to form a composite having a multilayer structure, and then passed through a calender roll having an embossing ratio of 11% to perform bonding.
- a nonwoven fabric having elasticity in the CD direction was prepared while the elongation in the MD direction was maximally suppressed.
- a first spunbond nonwoven web and a second spunbond nonwoven web having a content of polypropylene of 15 parts by weight and a content of a stretching raw material of 85 parts by weight were prepared, respectively.
- a copolymer resin containing 90 parts by weight of polypropylene and 10 parts by weight of polyethylene having a density of 0.865 g/cm 3 was used as a stretching raw material.
- the first spunbond nonwoven web and the second spunbond nonwoven web were laminated to form a composite having a multilayer structure, and then passed through a calender roll having an embossing ratio of 11% to perform bonding.
- a nonwoven fabric having elasticity in the CD direction was prepared while the elongation in the MD direction was maximally suppressed.
- a first spunbond nonwoven web and a second spunbond nonwoven web having a polypropylene content of 22 parts by weight and a stretch raw material content of 78 parts by weight were prepared, respectively.
- a copolymer resin containing 90 parts by weight of polypropylene and 10 parts by weight of polyethylene having a density of 0.865 g/cm 3 was used as a stretching raw material.
- the first spunbond nonwoven web and the second spunbond nonwoven web were laminated to form a composite having a multilayer structure, and then passed through a calender roll having an embossing ratio of 11% to perform bonding. Thereafter, while passing the bonded composite through a dryer generating hot air set at a temperature of 150° C., tension was applied in the MD direction and pulled, thereby adjusting the shrinkage processing rate in the CD direction to 50% to prepare a stretchable nonwoven fabric.
- a nonwoven fabric having elasticity in the CD direction was prepared while the elongation in the MD direction was maximally suppressed.
- a first spunbond nonwoven web and a second spunbond nonwoven web having a polypropylene content of 22 parts by weight and a stretch raw material content of 78 parts by weight were prepared, respectively.
- a copolymer resin containing 90 parts by weight of polypropylene and 10 parts by weight of polyethylene having a density of 0.865 g/cm 3 was used as a stretching raw material.
- the first spunbond nonwoven web and the second spunbond nonwoven web were laminated to form a composite having a multilayer structure, and then passed through a calender roll having an embossing ratio of 11% to perform bonding.
- a nonwoven fabric having elasticity in the CD direction was prepared while the elongation in the MD direction was maximally suppressed.
- a first spunbond nonwoven web and a second spunbond nonwoven web having a polypropylene content of 22 parts by weight and a stretch raw material content of 78 parts by weight were prepared, respectively.
- a polypropylene melt blown nonwoven web was prepared in a ratio of 10 parts by weight based on 100 parts by weight of the final stretchable nonwoven fabric.
- a copolymer resin containing 90 parts by weight of polypropylene and 10 parts by weight of polyethylene having a density of 0.865 g/cm 3 was used as a stretching raw material.
- the first spunbond nonwoven web, the polypropylene melt blown nonwoven web and the second spunbond nonwoven web are sequentially laminated to form a three-layered composite, and then passed through a calender roll having an embossing ratio of 11%. Bonding was performed. Thereafter, while passing the bonded composite through a dryer that generates hot air set at a temperature of 150° C., tension was applied in the MD direction and pulled, thereby adjusting the shrinkage processing rate in the CD direction to 58% to prepare a stretchable nonwoven fabric.
- a nonwoven fabric having elasticity in the CD direction was prepared while the elongation in the MD direction was maximally suppressed.
- a first spunbond nonwoven web and a second spunbond nonwoven web having a polypropylene content of 22 parts by weight and a stretch raw material content of 78 parts by weight were prepared, respectively.
- a polypropylene melt blown nonwoven web was prepared in a ratio of 20 parts by weight based on 100 parts by weight of the final stretchable nonwoven fabric.
- a copolymer resin containing 90 parts by weight of polypropylene and 10 parts by weight of polyethylene having a density of 0.865 g/cm 3 was used as a stretching raw material.
- the first spunbond nonwoven web, the polypropylene melt blown nonwoven web and the second spunbond nonwoven web are sequentially laminated to form a three-layered composite, and then passed through a calender roll having an embossing ratio of 11%. Bonding was performed. Thereafter, while passing the bonded composite through a dryer that generates hot air set at a temperature of 150° C., tension was applied in the MD direction and pulled, thereby adjusting the shrinkage processing rate in the CD direction to 58% to prepare a stretchable nonwoven fabric.
- a nonwoven fabric having elasticity in the CD direction was prepared while the elongation in the MD direction was maximally suppressed.
- a first spunbond nonwoven web and a second spunbond nonwoven web having a polypropylene content of 22 parts by weight and a stretch raw material content of 78 parts by weight were prepared, respectively.
- a polypropylene melt blown nonwoven web was prepared at a ratio of 30 parts by weight based on 100 parts by weight of the final stretchable nonwoven fabric.
- a copolymer resin containing 90 parts by weight of polypropylene and 10 parts by weight of polyethylene having a density of 0.865 g/cm 3 was used as a stretching raw material.
- the first spunbond nonwoven web, the polypropylene melt blown nonwoven web and the second spunbond nonwoven web are sequentially laminated to form a three-layered composite, and then passed through a calender roll having an embossing ratio of 11%. Bonding was performed. Thereafter, while passing the bonded composite through a dryer that generates hot air set at a temperature of 150° C., tension was applied in the MD direction and pulled, thereby adjusting the shrinkage processing rate in the CD direction to 58% to prepare a stretchable nonwoven fabric.
- a nonwoven fabric was prepared. Specifically, a first spunbond nonwoven web and a second spunbond nonwoven web having a content of polypropylene of 35 parts by weight and a content of a stretch raw material of 65 parts by weight were prepared, respectively. Here, a copolymer resin containing 90 parts by weight of polypropylene and 10 parts by weight of polyethylene having a density of 0.865 g/cm 3 was used as a stretching raw material. The first spunbond nonwoven web and the second spunbond nonwoven web were laminated to form a composite having a multilayer structure, and then passed through a calender roll having an embossing ratio of 11% to perform bonding.
- a nonwoven fabric was prepared. Specifically, a first spunbond nonwoven web and a second spunbond nonwoven web having a polypropylene content of 10 parts by weight and a stretching raw material content of 90 parts by weight were prepared, respectively. Here, a copolymer resin containing 90 parts by weight of polypropylene and 10 parts by weight of polyethylene having a density of 0.865 g/cm 3 was used as a stretching raw material. The first spunbond nonwoven web and the second spunbond nonwoven web were laminated to form a composite having a multilayer structure, and then passed through a calender roll having an embossing ratio of 11% to perform bonding.
- a nonwoven fabric was prepared. Specifically, a first spunbond nonwoven web and a second spunbond nonwoven web having a polypropylene content of 22 parts by weight and a stretch raw material content of 78 parts by weight were prepared, respectively. Here, a copolymer resin containing 90 parts by weight of polypropylene and 10 parts by weight of polyethylene having a density of 0.865 g/cm 3 was used as a stretching raw material. The first spunbond nonwoven web and the second spunbond nonwoven web were laminated to form a composite having a multilayer structure, and then passed through a calender roll having an embossing ratio of 11% to perform bonding.
- a nonwoven fabric was prepared. Specifically, a first spunbond nonwoven web and a second spunbond nonwoven web having a polypropylene content of 22 parts by weight and a stretch raw material content of 78 parts by weight were prepared, respectively. Here, a copolymer resin containing 90 parts by weight of polypropylene and 10 parts by weight of polyethylene having a density of 0.865 g/cm 3 was used as a stretching raw material.
- the first spunbond nonwoven web and the second spunbond nonwoven web were laminated to form a composite having a multilayer structure, and then passed through a calender roll having an embossing ratio of 11% to perform bonding. Thereafter, while passing the bonded composite through a dryer generating hot air set at a temperature of 150° C., tension was applied in the MD direction and pulled, thereby adjusting the shrinkage processing rate in the CD direction to 70% to prepare a stretchable nonwoven fabric.
- a nonwoven fabric was prepared. Specifically, a first spunbond nonwoven web and a second spunbond nonwoven web having a polypropylene content of 22 parts by weight and a stretch raw material content of 78 parts by weight were prepared, respectively. In addition, a polypropylene melt-blown nonwoven web was prepared in a ratio of 35 parts by weight based on 100 parts by weight of the final stretchable nonwoven fabric.
- a copolymer resin containing 90 parts by weight of polypropylene and 10 parts by weight of polyethylene having a density of 0.865 g/cm 3 was used as a stretching raw material.
- the first spunbond nonwoven web, the polypropylene melt blown nonwoven web and the second spunbond nonwoven web are sequentially laminated to form a three-layered composite, and then passed through a calender roll having an embossing ratio of 11%. Bonding was performed. Thereafter, while passing the bonded composite through a dryer that generates hot air set at a temperature of 150° C., tension was applied in the MD direction and pulled, thereby adjusting the shrinkage processing rate in the CD direction to 58% to prepare a stretchable nonwoven fabric.
- the raw materials, composition, manufacturing method and manufacturing conditions of the nonwoven fabrics prepared in Examples 1 to 8 and Comparative Examples 1 to 5 are shown in Table 1 below.
- the content of the stretch raw material and the content of polypropylene (PP) in the first spunbond nonwoven web or the second spunbond nonwoven web is 100 weight of the total weight of the first spunbond nonwoven web or the second spunbond nonwoven web, respectively It is based on parts, and the content of PP in the melt blown nonwoven web is based on 100 parts by weight of the total weight of the entire nonwoven fabric.
- PP polypropylene
- Elongation in MD direction and elongation in CD direction Maximum elongation by performing a tensile test under the conditions of a width of 5 cm, an interval of 10 cm, and a tensile rate of 500 mm/min according to the KSK 0520 method using an Instron measuring equipment. I found a city believer.
- CD-direction stretch recovery The CD-direction stretch recovery was evaluated by the method shown in FIG. 2 using an Instron measuring equipment. Specifically, the nonwoven fabric prepared in Examples 1 to 8 and Comparative Examples 1 to 5 was cut to have a length of 30 mm in the CD direction and a width of 25 mm in the MD direction to prepare a nonwoven fabric specimen.
- each nonwoven specimen is first stretched 100% at a speed of 500 mm/min in the CD direction using a pair of jigs (that is, the nonwoven specimen is stretched in the CD direction by widening the gap between the pair of jigs) stretched to 60 mm), maintained in this 100% elongated state for 1 minute, and returned to the original position by narrowing the gap between a pair of jigs (ie, after relaxation), and recovery proceeded for 1 minute.
- Example 1 One 2 3 4 5 6 7 CD direction extension % 320 305 325 310 330 335 330 MD direction elongation % 33 36 30 30 27 26 25 CD direction elastic recovery % 80 75 82 78 84 85 88 radioactive - Good Good Good Good Good Good Good Good Good Good Good Item unit
- Example comparative example 8 One 2 3 4 5 CD direction extension % 320 235 no radiation 260 fracture during heat shrinkage 215 235 MD direction elongation % 26 43 no radiation 45 fracture during heat shrinkage 32 43 CD direction stretch recovery % 82 65 no radiation 68 fracture during heat shrinkage 60 65 radioactive - Good Good Good Good Good Good Good Good
- the nonwoven fabrics prepared in Examples 1 to 8 have an MD direction elongation of 40% or less, a CD direction elongation of 300 to 400%, a CD direction stretch recovery of 70% or more, and excellent spinnability. appear.
- the nonwoven fabrics prepared in Comparative Examples 1 to 5 have an elongation in the MD direction of more than 40%, an elongation in the CD direction of less than 300% or more than 400%, or a stretch recovery in the CD direction of less than 70%, and/or spinnability. This turned out to be bad.
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Abstract
Description
항목 | 단위 | 실시예 | |||||||
1 | 2 | 3 | 4 | 5 | 6 | 7 | |||
전체 부직포의 기본중량 |
gsm | 40 | 40 | 40 | 40 | 40 | 40 | 40 | |
제1 스펀폰드 스펀폰드 부직웹 | 신축 원료 |
중량부 | 78 | 70 | 85 | 78 | 78 | 78 | 78 |
PP | 중량부 | 22 | 30 | 15 | 22 | 22 | 22 | 22 | |
기본중량 | gsm | 20 | 20 | 20 | 20 | 20 | 18 | 16 | |
멜트블로운 부직웹 |
PP | 중량부 | 0 | 0 | 0 | 0 | 0 | 10 | 20 |
기본중량 | gsm | 0 | 0 | 0 | 0 | 0 | 4 | 8 | |
제2 스펀폰드 부직웹 | 신축 원료 |
중량부 | 78 | 70 | 85 | 78 | 78 | 78 | 78 |
PP | 중량부 | 22 | 30 | 15 | 22 | 22 | 22 | 22 | |
기본중량 | gsm | 20 | 20 | 20 | 20 | 20 | 18 | 16 | |
CD 방향 수축 가공율 | % | 58 | 58 | 58 | 50 | 65 | 58 | 58 | |
Dryer 열풍온도 | ℃ | 150 | 150 | 150 | 150 | 150 | 150 | 150 | |
캘린더 본딩율 | % | 11 | 11 | 11 | 11 | 11 | 11 | 11 | |
캘린더 상부온도 | ℃ | 110 | 110 | 110 | 110 | 110 | 110 | 110 | |
캘린더 하부온도 | ℃ | 100 | 100 | 100 | 100 | 100 | 100 | 100 | |
캘린더 선압 | N/mm | 90 | 90 | 90 | 90 | 90 | 90 | 90 | |
항목 | 단위 | 실시예 | 비교예 | ||||||
8 | 1 | 2 | 3 | 4 | 5 | ||||
전체 부직포의 기본중량 |
gsm | 40 | 40 | 40 | 40 | 40 | 36 | ||
제1 스펀폰드 부직웹 | 신축 원료 |
중량부 | 78 | 65 | 90 | 78 | 78 | 78 | |
PP | 중량부 | 22 | 35 | 10 | 22 | 22 | 22 | ||
기본중량 | gsm | 14 | 20 | 20 | 20 | 20 | 13 | ||
멜트블로운 부직웹 |
PP | 중량부 | 30 | 0 | 0 | 0 | 0 | 35 | |
기본중량 | gsm | 12 | 0 | 0 | 0 | 0 | 14 | ||
제2 스펀폰드 부직웹 | 신축 원료 |
중량부 | 78 | 65 | 90 | 78 | 78 | 78 | |
PP | 중량부 | 22 | 35 | 10 | 22 | 22 | 22 | ||
기본중량 | gsm | 14 | 20 | 20 | 20 | 20 | 13 | ||
CD 방향 수축 가공율 | % | 58 | 58 | 58 | 45 | 70 | 58 | ||
Dryer 열풍온도 | ℃ | 150 | 150 | 150 | 150 | 150 | 150 | ||
캘린더 본딩율 | % | 11 | 11 | 11 | 11 | 11 | 11 | ||
캘린더 상부온도 | ℃ | 110 | 110 | 110 | 110 | 110 | 110 | ||
캘린더 하부온도 | ℃ | 100 | 100 | 100 | 100 | 100 | 100 | ||
캘린더 선압 | N/mm | 90 | 90 | 90 | 90 | 90 | 90 |
항목 | 단위 | 실시예 | ||||||
1 | 2 | 3 | 4 | 5 | 6 | 7 | ||
CD 방향 신도 | % | 320 | 305 | 325 | 310 | 330 | 335 | 330 |
MD 방향 신도 | % | 33 | 36 | 30 | 30 | 27 | 26 | 25 |
CD 방향 신축 회복성 | % | 80 | 75 | 82 | 78 | 84 | 85 | 88 |
방사성 | - | 양호 | 양호 | 양호 | 양호 | 양호 | 양호 | 양호 |
항목 | 단위 | 실시예 | 비교예 | |||||
8 | 1 | 2 | 3 | 4 | 5 | |||
CD 방향 신도 | % | 320 | 235 | 방사불가 | 260 | 열수축시 파단 | 215 | 235 |
MD 방향 신도 | % | 26 | 43 | 방사불가 | 45 | 열수축시 파단 | 32 | 43 |
CD 방향 신축 회복성 | % | 82 | 65 | 방사불가 | 68 | 열수축시 파단 | 60 | 65 |
방사성 | - | 양호 | 양호 | 방사불가 | 양호 | 양호 | 양호 | 양호 |
Claims (18)
- MD 방향의 신도가 40% 이하이고, CD 방향의 신도가 300~400%이고, CD 방향 신축 회복성이 70% 이상인 신축성 부직포.
- 제1항에 있어서,상기 신축성 부직포는 단일층 또는 복수층의 스펀본드 부직웹을 포함하는 신축성 부직포.
- 제2항에 있어서,상기 스펀본드 부직웹은 폴리프로필렌 15~30중량부 및 신축원료 70~85중량부를 포함하는 신축성 부직포.
- 제3항에 있어서,상기 신축원료는 0.860~0.870g/cm3의 밀도를 갖는 폴리프로필렌 85~90중량부 및 폴리에틸렌 10~15중량부를 함유하는 공중합체 수지를 포함하는 신축성 부직포.
- 제4항에 있어서,상기 신축원료는 0.860~0.870g/cm3의 밀도를 갖는 폴리프로필렌 86.5~93중량부 및 폴리에틸렌 7~13.5중량부를 함유하는 공중합체 수지를 포함하는 신축성 부직포.
- 제2항에 있어서,상기 신축성 부직포는 2개층의 스펀본드 부직웹을 포함하는 신축성 부직포.
- 제6항에 있어서,상기 신축성 부직포는 한쌍의 스펀본드 부직웹 및 이들 사이에 개재된 멜트블로운 부직웹을 포함하는 신축성 부직포.
- 제7항에 있어서,상기 멜트블로운 부직웹은 폴리프로필렌을 포함하는 신축성 부직포.
- 제7항에 있어서,상기 멜트블로운 부직웹의 함량은 상기 신축성 부직포 100중량부에 대하여 30중량부 이하인 신축성 부직포.
- 제1항에 있어서,기본중량이 20~80gsm인 신축성 부직포.
- 폴리프로필렌 15~30중량부 및 신축원료 70~85중량부의 혼합물을 방사하여 스펀본드 부직웹을 제조하는 단계(S10); 및상기 스펀본드 부직웹을 50~65%의 CD 방향 수축 가공율로 CD 방향으로 수축시키는 단계(S20)를 포함하는 신축성 부직포의 제조방법.
- 제11항에 있어서,상기 단계(S10)와 상기 단계(S20) 사이에, 상기 단계(S10)에서 제조된 스펀본드 부직웹 위에 적층되도록 폴리프로필렌 15~30중량부 및 신축원료 70~85중량부의 혼합물을 방사하여 또 다른 스펀본드 부직웹을 제조하는 단계(S12)를 더 포함하는 신축성 부직포의 제조방법.
- 제12항에 있어서,상기 단계(S10)와 상기 단계(S20) 사이에, 상기 단계(S10)에서 제조된 스펀본드 부직웹과 상기 단계(S12)에서 제조된 스펀본드 부직웹 사이에 개재되도록 폴리프로필렌을 방사하여 멜트블로운 부직웹을 제조하는 단계(14)를 더 포함하는 신축성 부직포의 제조방법.
- 제11항에 있어서,상기 단계(S20)에서 CD 방향으로 수축된 스펀본드 부직웹을 냉각 롤러에 통과시킨 후 권취하는 단계(S30)를 더 포함하는 신축성 부직포의 제조방법.
- 제14항에 있어서,상기 단계(S30)에서 상기 냉각 롤러는 60~80℃의 온도로 유지되는 신축성 부직포의 제조방법.
- 제11항에 있어서,상기 단계(S20)는 상기 단계(S10)에서 제조된 스펀본드 부직웹을 120~150℃의 온도로 열풍건조시키면서 MD 방향으로 20~50N의 장력을 부여함으로써 수행되는 신축성 부직포의 제조방법.
- 제1항 내지 제10항 중 어느 한 항에 따른 신축성 부직포를 포함하는 물품.
- 제17항에 있어서,상기 물품은 마스크 이어밴드를 포함하는 물품.
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JP2002004161A (ja) * | 2000-06-19 | 2002-01-09 | Marue Nissan Kk | 高伸縮性不織布およびその製造方法 |
JP2005126834A (ja) * | 2003-10-21 | 2005-05-19 | Daio Paper Corp | 不織布 |
JP2006503994A (ja) * | 2002-10-23 | 2006-02-02 | ファイバーテックス・エー/エス | 弾性を有する不織材料、その製造方法、及び本方法を行うための装置 |
JP2007054381A (ja) * | 2005-08-25 | 2007-03-08 | Kurashiki Seni Kako Kk | 立体形マスク |
JP2018530683A (ja) * | 2015-10-16 | 2018-10-18 | アビンティブ・スペシャルティ・マテリアルズ・インコーポレイテッドAVINTIV Specialty Materials Inc. | 整列したセグメント化繊維を有する不織布 |
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JP2002004161A (ja) * | 2000-06-19 | 2002-01-09 | Marue Nissan Kk | 高伸縮性不織布およびその製造方法 |
JP2006503994A (ja) * | 2002-10-23 | 2006-02-02 | ファイバーテックス・エー/エス | 弾性を有する不織材料、その製造方法、及び本方法を行うための装置 |
JP2005126834A (ja) * | 2003-10-21 | 2005-05-19 | Daio Paper Corp | 不織布 |
JP2007054381A (ja) * | 2005-08-25 | 2007-03-08 | Kurashiki Seni Kako Kk | 立体形マスク |
JP2018530683A (ja) * | 2015-10-16 | 2018-10-18 | アビンティブ・スペシャルティ・マテリアルズ・インコーポレイテッドAVINTIV Specialty Materials Inc. | 整列したセグメント化繊維を有する不織布 |
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