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WO2013172591A1 - Feuille étanche à l'eau permettant la pénétration du son, son procédé de fabrication, et dispositif électronique équipé de feuille étanche à l'eau permettant la pénétration du son - Google Patents

Feuille étanche à l'eau permettant la pénétration du son, son procédé de fabrication, et dispositif électronique équipé de feuille étanche à l'eau permettant la pénétration du son Download PDF

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Publication number
WO2013172591A1
WO2013172591A1 PCT/KR2013/004062 KR2013004062W WO2013172591A1 WO 2013172591 A1 WO2013172591 A1 WO 2013172591A1 KR 2013004062 W KR2013004062 W KR 2013004062W WO 2013172591 A1 WO2013172591 A1 WO 2013172591A1
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WO
WIPO (PCT)
Prior art keywords
porous
porous substrate
pores
waterproof
spinning
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/KR2013/004062
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English (en)
Korean (ko)
Inventor
서인용
이승훈
황준식
정용식
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Amogreentech Co Ltd
Original Assignee
Amogreentech Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from KR1020130051383A external-priority patent/KR101460303B1/ko
Application filed by Amogreentech Co Ltd filed Critical Amogreentech Co Ltd
Priority to CN201380025777.7A priority Critical patent/CN104302823B/zh
Publication of WO2013172591A1 publication Critical patent/WO2013172591A1/fr
Priority to US14/540,308 priority patent/US10132004B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
    • 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
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4382—Stretched reticular film fibres; Composite fibres; Mixed fibres; Ultrafine fibres; Fibres for artificial leather
    • D04H1/43838—Ultrafine fibres, e.g. microfibres
    • 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
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4282—Addition polymers
    • D04H1/4318—Fluorine series
    • 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
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4374—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece using different kinds of webs, e.g. by layering webs
    • 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
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
    • D04H1/72—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged
    • D04H1/728—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged by electro-spinning

Definitions

  • the present invention is installed in the sound hole or ventilator of the speaker or microphone of the electronic device to pass the sound and air, and to block the water, and more specifically, a waterproof soak sheet manufactured by an electrospinning method and a manufacturing method thereof; An electronic device having a waterproof sound absorbing sheet.
  • Portable electronic devices such as portable terminals, digital cameras, and laptops are required to have waterproof functions because they are used while being portable.
  • an acoustic hole for emitting sound is formed in a portion where a speaker or a microphone is installed, and water or dust penetrates into the electronic device through the acoustic hole.
  • the sound absorbing sheet is installed in the acoustic hall to pass sound and block water and dust.
  • the waterproof soak sheet should have a small average diameter of the micropores for waterproofing, and the larger the size of the micropores for the sonicity is advantageous. Therefore, it is important to properly maintain the diameter of the hole that can satisfy both the breathable and waterproof conditions.
  • the conventional waterproof sound-permeable membrane is composed of a polytetrafluoroethylene porous membrane, as disclosed in Korean Patent Laid-Open Publication No. 10-2010-0041839 (April 22, 2010), wherein the polytetrafluoroethylene porous membrane comprises a first porous layer, A second porous layer laminated and integrated in the first porous layer based on the binding force acting between the matrices of polytetrafluoroethylene, the surface density of the waterproof membrane is 1-20 g / m 2 , and the first porous layer and The 2nd porous layer is biaxially stretched, respectively, and it is formed so that the draw ratio of a 1st porous layer may be equal to the draw ratio of a 2nd porous layer.
  • Such a waterproof sound-permeable membrane has a porous layer composed of a first porous layer and a second porous layer to improve waterproof performance.
  • the conventional waterproof sound-permeable membrane is composed only of the polytetrafluoroethylene porous membrane, the micropore of the porous membrane is gradually increased due to the impact or external pressure applied from the outside as the service life becomes longer. There is a problem that the waterproof performance is degraded.
  • An object of the present invention is to provide a waterproof soak sheet in the form of a nano-web having a plurality of pores formed by the electrospinning method, a method of manufacturing the same, and an electronic device having the waterproof soak sheet.
  • Another object of the present invention is to add a pigment to the polymer material when manufacturing the porous nanoweb by the electrospinning method, it is possible to eliminate the process of applying the pigment can shorten the production process, improve the waterproofing performance and sound absorption performance To provide a waterproof soak sheet and a method of manufacturing the same, and an electronic device having a waterproof soak sheet.
  • Another object of the present invention is to produce a porous nanoweb on the porous substrate by the electrospinning method, to improve the sheet strength, to control the thickness of the nanoweb, the average diameter of the pores, the number of pores waterproof to be applied to various products
  • the present invention provides a sound absorbing sheet, a method of manufacturing the same, and an electronic device including a waterproof sound absorbing sheet.
  • the waterproof soak sheet of the present invention comprises a porous substrate having a plurality of pores, and a plurality of pores formed by electrospinning a polymer material laminated on the porous substrate and added with a pigment of black or other color. It characterized in that it comprises a porous nano web.
  • the method of manufacturing a waterproof soak sheet of the present invention includes supplying a porous substrate having a plurality of pores, and spinning a spinning solution on the porous substrate to form a porous nanoweb having a plurality of pores with black or other colors. It is characterized by including.
  • the method of manufacturing a waterproof soak sheet of the present invention includes supplying a porous substrate having a plurality of pores, and spinning a spinning solution on one surface of the porous substrate to form a first nanoweb layer having a plurality of pores with black or other colors. And spinning the spinning solution on the other surface of the porous substrate to form a second nanoweb layer having a plurality of pores with black or other colors.
  • the method of manufacturing a waterproof soak sheet of the present invention comprises the steps of supplying a first porous substrate having a plurality of pores, and spinning a spinning solution on one surface of the first porous substrate to have black or other colors and porous nanos having a plurality of pores. Forming a web, and laminating a second porous substrate having a plurality of pores on the other surface of the porous nano-web.
  • the waterproof soak sheet of the present invention can form a porous nanoweb having a black or other color by a spinning method on a porous substrate such as a nonwoven fabric to improve sheet strength, and improve waterproof performance and soak performance. There is an advantage.
  • the waterproof soak sheet of the present invention forms the porous nanoweb by the electrospinning method, it is possible to control the thickness of the nanoweb, the average diameter of the pores, the number of pores can be applied to a variety of products.
  • the waterproof soak sheet of the present invention can eliminate the process of applying the pigment by adding a pigment to the polymer material when manufacturing the porous nanoweb by the electrospinning method on the nonwoven fabric can shorten the production process, waterproof performance and There is an advantage to improve the sound performance.
  • 1 is a cross-sectional view of the waterproof soak sheet according to the first embodiment of the present invention.
  • FIG. 2 is an enlarged photograph of the waterproof soak sheet according to the first embodiment of the present invention.
  • FIG. 3 is a configuration diagram of an electrospinning apparatus for manufacturing a waterproof soak sheet according to the first embodiment of the present invention.
  • FIG. 4 is a cross-sectional view of the waterproof soak sheet according to the second embodiment of the present invention.
  • FIG. 5 is a configuration diagram of an electrospinning apparatus for manufacturing a waterproof soak sheet according to the second embodiment of the present invention.
  • FIG. 6 is a cross-sectional view of the waterproof soak sheet according to the third embodiment of the present invention.
  • FIG. 7 is a configuration diagram of an electrospinning apparatus for manufacturing a waterproof soak sheet according to the third embodiment of the present invention.
  • FIG. 8 is a cross-sectional view of the waterproof soak sheet according to the fourth embodiment of the present invention.
  • FIG. 9 is a cross-sectional view of the double-sided adhesive tape applied to the waterproof soak sheet of the present invention.
  • FIG. 10 is a partial cross-sectional view of the electronic device to which the waterproof soak sheet of the present invention is applied.
  • FIG. 11 is an enlarged view illustrating main parts of FIG. 10.
  • the waterproof soak sheet according to the first embodiment of the present invention is formed on one surface of the porous substrate 20 and the porous substrate 20 and has black or various colors. It includes a porous nano web (10) having a plurality of pores formed by electrospinning a polymer material added with a pigment of.
  • the porous substrate 20 may be a thermal bond nonwoven fabric, a spunbond nonwoven fabric, a chemical bond nonwoven fabric, an airlaid nonwoven fabric, and a mixture thereof.
  • the porous substrate may be a textile paper, styrofoam, paper, mesh, etc. having pores in addition to the nonwoven fabric.
  • the porous substrate 20 may have a black or other color
  • the method of applying the pigment may be used, such as gravure printing, coating, dope die (Dope-dye) method can also be used.
  • the porous nanoweb 10 electrospins a polymer material to which black or another color pigment is added to make the ultrafine fiber strands 14, and the ultrafine fiber strands 14 accumulate to collect a plurality of pores 12. It is formed in the form having.
  • the polymeric material used to make the porous nanoweb 10 is not particularly limited as long as it is a resin that can be dissolved in an organic solvent for electrospinning and can form nanofibers by electrospinning.
  • the polymeric material may be polyvinylidene fluoride (PVdF), poly (vinylidene fluoride-co-hexafluoropropylene), perfuluropolymer, polyvinylchloride, polyvinylidene chloride or copolymers thereof, Polyethylene glycol derivatives including polyethylene glycol dialkyl ether and polyethylene glycol dialkyl ester, polyoxides including poly (oxymethylene-oligo-oxyethylene), polyethylene oxide and polypropylene oxide, polyvinylacetate, poly (vinylpi Polyacrylonitrile copolymers, including polylidone-vinylacetate), polystyrene and polystyrene acrylonitrile copolymers, polyacrylonitrile (PAN), polyacrylonitrile methyl methacrylate copolymers, polymethylmethacrylates, Polymethyl methacrylate copolymers or mixtures thereof There.
  • PVdF polyvinylidene fluoride
  • PVdF polyvin
  • polymer materials that can be used include polyamide, polyimide, polyamideimide, poly (meth-phenylene isophthalamide), polysulfone, polyetherketone, polyetherimide, polyethylene terephthalate and polytrimethylene terephthalate.
  • Aromatic polyesters such as polyethylene naphthalate, and the like, polyphosphazenes such as polytetrafluoroethylene, polydiphenoxyphosphazene, poly ⁇ bis [2- (2-methoxyethoxy) phosphazene], polyurethane and Polyurethane copolymers including polyetherurethane, cellulose acetate, cellulose acetate butyrate, cellulose acetate propionate, and the like.
  • PAN polyvinylidene fluoride
  • PVdF polyvinylidene fluoride
  • PS polyester sulfone
  • PS polystyrene
  • PVdF polystyrene
  • TPU thermoplastic polyurethane
  • the polymer that can be used in the present embodiment is not particularly limited to thermoplastic and thermosetting polymers capable of air electrospinning.
  • the solvent is DMAc (N, N-Dimethyl acetoamide), DMF (N, N-Dimethylformamide), NMP (N-methyl-2-pyrrolidinone), DMSO (dimethyl sulfoxide), THF (tetra-hydrofuran), (EC (ethylene carbonate) ), Diethyl carbonate (DEC), dimethyl carbonate (DMC), ethyl methyl carbonate (EMC), propylene carbonate (PC), water, acetic acid, formic acid, chloroform, dichloromethane ) And acetone or mixtures thereof may be used.
  • DMAc N, N-Dimethyl acetoamide
  • DMF N, N-Dimethylformamide
  • NMP N-methyl-2-pyrrolidinone
  • DMSO dimethyl sulfoxide
  • THF tetra-hydrofuran
  • EC ethylene carbonate
  • DMC diethyl carbonate
  • DMC dimethyl carbonate
  • EMC eth
  • the thickness of the porous nanoweb 10 is determined according to the radiation amount of the polymer material. Therefore, there is an advantage that it is easy to make the thickness of the porous nano-web 10 to the desired thickness. In other words, if the radiation amount of the polymer material is reduced, the thickness of the porous nanoweb 10 may be made thin, and thus the manufacturing cost may be reduced accordingly because the radiation amount is small.
  • the porous nanoweb 10 increases the thickness of the porous nanoweb when the waterproofness is improved, and when the permeability is improved, You can make it thinner.
  • the diameter of the fiber strands 14 ranges from 0.3 to 1.5 um.
  • the average pore size is 1.5 ⁇ 2um maximum, the minimum size is not limited. That is, the average pore size is preferably 2 ⁇ m or less.
  • Pigment is used to prepare a waterproof soak sheet of black or other colors, depending on the amount and type of pigment used may implement a variety of colors or tones.
  • the process of applying the pigment to the surface of the porous nanoweb can be eliminated, thereby shortening the manufacturing process and precisely making the average diameter of the pores precisely. have.
  • Gravure printing, coating, etc. may be used as a conventional method of applying a pigment.
  • a pigment is applied by applying such a method to realize a color, there may be a problem of a decrease in air permeability and low color fastness.
  • by adding a pigment to the polymer material to produce a nano web it is possible to improve the color fastness inherently, to improve the waterproofness, breathability and breathability and to prevent a decrease in air permeability.
  • the waterproof soak sheet according to the present embodiment is to be oil-treated to the surface to further improve the waterproof performance.
  • the oil repellent processing is formed by treating an organic fluorine-based compound or the like on the surface of the porous nanoweb 10 or the surface of the porous substrate, and various methods for oil repellent treatment may be applied.
  • the waterproof breathable sheet according to the present embodiment may be used as a waterproof breathable sheet for passing heat or air and blocking water or dust.
  • a spinning solution in which a spinning solution in which a polymer or a solvent mixed with a pigment of black or other color is added is stored
  • the spinning solution tank 30 is provided with a stirrer 32 to mix the polymer material, pigment and solvent evenly and to prevent phase separation of the spinning solution.
  • a high voltage electrostatic force of 90 to 120 Kv is applied between the collector 36 and the spinneret 34, and the ultrafine fiber strands 14 are radiated from the spinneret 34, so that the porous nanoweb 10 is disposed on the collector 36. Is formed.
  • a plurality of spinning nozzles 34 are arranged at intervals along the travel direction of the collector 36, and a plurality of spinning nozzles are arranged in a direction orthogonal to the travel direction of the collector 36 (ie, the width direction of the collector). Are spaced along the line.
  • three radiation nozzles are arranged at intervals along the traveling direction of the collector 36 for convenience of description.
  • the radiation nozzles arranged along the traveling direction of the collector 36 may be arranged, for example, 30-60, or more, as necessary, and in the case of using a plurality of radiation nozzles, The productivity can be increased by increasing the rotation speed.
  • Each spinning nozzle 34 is provided with an air injector 38 to inject air onto the fiber strands 14 emitted from the spinning nozzle 34 so that the fiber strands 14 are collected toward the collector 36. Guide.
  • an air injector 38 is provided for each spinning nozzle 34 using a multi-hole spinning pack to spin the fiber strands 14. Air is blown out so that the fiber strands are collected well in the collector.
  • the air pressure of the air injector of the multi-hole spin pack nozzle of the present invention is set in the range of 0.1 to 0.6 MPa. In this case, when the air pressure is less than 0.1MPa, it does not contribute to the collection / accumulation, and when the air pressure exceeds 0.6MPa, the cone of the spinning nozzle is hardened to block the needle, causing radiation trouble.
  • Collector 36 may be a conveyor for transporting the nano-web so that the ultra-fine fiber strands 14 emitted from the plurality of spinning nozzles 34 are sequentially accumulated.
  • a substrate roll 44 on which the porous substrate 20 is wound is provided to supply the porous substrate 20 to the collector.
  • a porous nano fabricated by an electrospinning method is provided in the rear of the collector 36.
  • a press roller 40 is provided to press the web 10 to a predetermined thickness, and a nano web roll 42 is formed on which the pressurized porous nano web 10 is wound while passing through the press roller 40.
  • the porous substrate 20 is moved to the upper surface of the collector 36. That is, the porous substrate 20 wound around the substrate roll 20 is supplied to the collector 36 while being unwound.
  • the polymer material to which the pigment is added in the spinning nozzle 34 is made into ultra-fine fiber strands 14 to be spun onto the porous substrate.
  • the ultrafine fiber strands 14 are then accumulated on the porous substrate to form a porous nanoweb 10 having a plurality of pores 12 having a black or other color.
  • the composite sheet having the porous nanoweb 10 formed on the porous substrate 20 is made to have a predetermined thickness while passing through the pressure roller 40, and wound on the nanoweb roll 40.
  • the waterproof sheet according to the second embodiment of the present invention includes a porous nanoweb layer 10 having a plurality of pores formed by electrospinning a polymer material to which a pigment of black or various colors is added, and A first porous substrate 22 formed on one surface of the porous nanoweb 10 and having a plurality of pores, and a second porous substrate 24 formed on the other surface of the porous nanoweb 10 and having a plurality of pores. do.
  • the porous nanoweb 10 has the same configuration as the porous nanoweb 10 described in the first embodiment above, and the first porous substrate 22 and the second porous substrate 24 are the same in the first embodiment. It is the same as the structure of the porous base material 20 demonstrated.
  • the waterproof breathable sheet according to the second embodiment has a three-layer structure in which the first porous substrate 22 and the second porous substrate 24 are laminated on both surfaces of the porous nanoweb 10 to reinforce strength.
  • a spinning solution in which a spinning solution is mixed with a polymer and a solvent to which a black or other color pigment is added.
  • a plurality of spinning nozzles 34 connected to the tank 30, a high voltage generator and connected to the spinning solution tank 30, to spin the ultrafine fiber strands, and the ultrafine fiber strands 14 to be emitted from the spinning nozzle 34. This accumulates and includes a collector 36 from which the porous nanoweb 10 is made.
  • the electrospinning apparatus according to this second embodiment is the same as the structure of the electrospinning apparatus described in the first embodiment, except that the first substrate roll (1) on which the first porous substrate 22 is wound on the front side of the collector 36 ( 45 is disposed, and a second substrate roll 46 on which the second porous substrate 24 is wound is disposed on the rear side of the collector 36.
  • the first porous substrate 22 is moved to the upper surface of the collector 36.
  • the polymer material to which the pigment is added in the spinning nozzle 34 is made into the ultrafine fiber strands 14 to the first porous substrate 22. Radiate.
  • the ultrafine fiber strands 14 are then accumulated in the first porous substrate 22 to form a porous nanoweb 10 having a plurality of pores 12 having a black or other color.
  • the second porous substrate 24 wound on the second base roll 46 disposed behind the collector 36 is supplied to the rear of the collector 36 and laminated on the other surface of the porous nanoweb 10.
  • a three-layered composite sheet having the first porous substrate 22 and the second porous substrate 24 laminated on both surfaces of the porous nanoweb 10 is made to have a predetermined thickness while passing through the pressure roller 40, It is wound on the nano web roll 40.
  • the waterproof breathable sheet according to the third embodiment of the present invention is laminated on one surface of the porous substrate 20 having a plurality of pores and the porous substrate 20, and has a pigment of black or various colors. Electrospinning the added polymer material to electrospin the first nano web layer 50 having a plurality of pores, and a polymer material laminated on the other surface of the porous substrate 20 and added with a pigment of black or various colors A second nano web layer 52 having a.
  • the porous substrate 20 is the same as the structure of the porous substrate 10 described in the first embodiment, the first nano web layer 50 and the second nano web layer 52 is the porous nano web ( Same as 10).
  • the first nano web layer 50 is laminated on one surface of the porous substrate 20, and the second nano web layer 52 is laminated on the other surface of the porous substrate 20, thereby forming a three-layer structure. It is formed to have.
  • a second collector 68 in which the ultrafine fiber strands spun at 66 are accumulated.
  • the first spinning nozzle 60 and the second spinning nozzle 66 are connected to a spinning solution tank (not shown) in which a spinning solution in which a polymer or a solvent with a black or other color pigment is added and a spinning solution mixed with a solvent is stored is stored. .
  • the front side of the first collector 62 is provided with a substrate roll 64 wound around the porous substrate 20 so as to supply the porous substrate 20 to the first collector 62.
  • a pressing roller 72 for pressing the sheet of the three-layer structure manufactured by the electrospinning method to a predetermined thickness, the sheet roll is wound around the sheet formed to a predetermined thickness while passing through the pressing roller 72 ( 70).
  • the porous substrate 20 is formed on the upper surface of the first collector 62. Supplied.
  • the polymer material to which the pigment is added in the first radiation nozzle 60 is made of ultra-fine fiber strands of the porous substrate 20 Radiate on one side. Then, ultrafine fiber strands are accumulated on one surface of the porous substrate 20 to form a first nanoweb layer 52 having a plurality of pores 12 having a black or other color.
  • the porous substrate on which the first nanoweb layer 50 is formed is guided to the second collector. At this time, the other surface of the porous substrate is disposed to face upward. Then, by applying a high voltage electrostatic force between the second collector 68 and the second radiation nozzle 66, the polymer material to which the pigment is added in the second radiation nozzle 66 is made into ultra-fine fiber strands of the porous substrate 20 Radiate on the other side. Then, ultrafine fiber strands are accumulated on the other surface of the porous substrate 20 to form a second nanoweb layer 52 having a plurality of pores 12 having black or other colors.
  • the composite sheet in which the nanoweb layer was formed on both surfaces of the porous base material is made to a certain thickness, passing through the pressure roller 72, and wound up by the sheet roll 70.
  • the waterproof soak sheet according to the fourth embodiment of the present invention has a porous substrate 20 having a plurality of pores and a polymer formed on one surface of the porous substrate and adding pigments of black or various colors. It includes a porous nano web (10) having a plurality of pores formed by electrospinning the material, and a double-sided adhesive tape 160 formed on one surface of the porous substrate 20 or porous nano web (10).
  • the double-sided adhesive tape 160 is formed along the edge of the porous nanoweb 10 or the porous substrate to attach the waterproof soak sheet to the acoustic hole portion of the electronic device.
  • the double-sided adhesive tape may be used an inorganic material type or a substrate type, a conventional double-sided adhesive tape may be used, a double-sided adhesive tape formed by the electrospinning method may be used.
  • the double-sided adhesive tape 160 formed by the electrospinning method has a substrate 162 formed in the form of a nanoweb having a plurality of pores by the electrospinning method, and one surface of the substrate 162.
  • the first adhesive layer 164 is formed in the form of a nano-web by spinning the adhesive material on the surface
  • the second adhesive layer 166 is formed in the form of a nano-web by spinning the adhesive material on the other surface of the substrate 162.
  • the substrate 162 is made of ultra-fine fiber strands by electrospinning the polymer material, the ultra-fine fiber strands are accumulated to form a nano web (nano web) having a plurality of pores.
  • the first adhesive layer 164 and the second adhesive layer 166 are formed by spinning an adhesive material on one surface and the other surface of the substrate 162, and the adhesive material flows into the pores of the substrate to form an adhesive material of the adhesive material. Since the amount of the pressure-sensitive adhesive is increased by increasing the amount of the pressure-sensitive adhesive is introduced into the pores of the base material 162, the amount of the pressure-sensitive adhesive is larger than that of the conventional double-sided adhesive tape, thereby increasing the adhesive force.
  • the double-sided adhesive tape 160 may be integrally formed in the electrospinning apparatus for forming the porous nanoweb 10, and may be separately manufactured in another electrospinning apparatus and then laminated on the other surface of the porous nanoweb.
  • FIG. 10 is a partial cross-sectional view of an electronic device to which the waterproof sound absorbing sheet of the present invention is applied, and FIG. 11 is an enlarged view illustrating main parts of FIG. 10.
  • a speaker 120 for emitting sound to the outside of the main body 110 and a microphone 130 for inputting sound are respectively installed, and the main body 110 includes a speaker 120 and a microphone.
  • Acoustic holes 140 and 150 through which sound passes are formed in a portion where the 130 is installed.
  • the acoustic holes 140 and 150 are provided with a waterproof soak sheet 100 and 200 according to the present invention for blocking water or dust and passing the sound.
  • the waterproof soak sheet 100, 200 may be used the waterproof soak sheet described in the first to fourth embodiments described above.
  • a ring-shaped double-sided adhesive tape 160 is installed on the inner surfaces of the acoustic holes 140 and 150 to fix the waterproof breathing sheet 100 and 200 to the inner surfaces of the acoustic holes 140 and 150.
  • the waterproof soak sheet according to the present embodiment may be installed in an air vent hole through which heat or air of an electronic device passes, and may be used as a role of passing air or heat and blocking water or dust. .
  • the waterproof soak sheet of the present invention is installed in an electronic device, and allows sound or air to pass through and blocks water, so that the waterproof soak sheet can be applied to an electronic device to be used while carrying and carrying a portable terminal, and can be used to perform a waterproof function. It is formed in the form of a nano-web having a plurality of pores formed to improve the waterproof and breathable performance.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Nonwoven Fabrics (AREA)
  • Laminated Bodies (AREA)
PCT/KR2013/004062 2012-05-18 2013-05-09 Feuille étanche à l'eau permettant la pénétration du son, son procédé de fabrication, et dispositif électronique équipé de feuille étanche à l'eau permettant la pénétration du son Ceased WO2013172591A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201380025777.7A CN104302823B (zh) 2012-05-18 2013-05-09 防水透声片及其制备方法和具有防水透声片的电子设备
US14/540,308 US10132004B2 (en) 2012-05-18 2014-11-13 Waterproof sound-permitting sheet, method of manufacturing same, and electronic device provided with waterproof sound-permitting sheet

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR10-2012-0053143 2012-05-18
KR20120053143 2012-05-18
KR1020130051383A KR101460303B1 (ko) 2012-05-18 2013-05-07 방수 통음 시트 및 그 제조방법과, 방수 통음 시트를 구비한 전자기기
KR10-2013-0051383 2013-05-07

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WO2013172591A1 true WO2013172591A1 (fr) 2013-11-21

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Publication number Priority date Publication date Assignee Title
CN104073895A (zh) * 2014-07-03 2014-10-01 东华大学 一种取向沟槽微/纳米纤维及其制备方法
CN115787298A (zh) * 2022-12-01 2023-03-14 天津日津科技股份有限公司 一种黑色双疏防水透气膜及其制备方法

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JPH08232170A (ja) * 1993-06-29 1996-09-10 New Oji Paper Co Ltd 顔料塗被不織布およびその製造方法
KR20090128104A (ko) * 2008-06-10 2009-12-15 코오롱패션머티리얼 (주) 투습방수원단 및 그의 제조방법
KR20090128097A (ko) * 2008-06-10 2009-12-15 코오롱패션머티리얼 (주) 나노섬유 웹을 포함하는 투습방수원단의 제조방법
KR20100024119A (ko) * 2008-08-25 2010-03-05 코오롱패션머티리얼 (주) 나노섬유를 이용한 방수원단
KR20100041839A (ko) * 2007-07-18 2010-04-22 닛토덴코 가부시키가이샤 방수 통음막, 방수 통음막의 제조 방법 및 그것을 사용한 전기 제품

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Publication number Priority date Publication date Assignee Title
JPH08232170A (ja) * 1993-06-29 1996-09-10 New Oji Paper Co Ltd 顔料塗被不織布およびその製造方法
KR20100041839A (ko) * 2007-07-18 2010-04-22 닛토덴코 가부시키가이샤 방수 통음막, 방수 통음막의 제조 방법 및 그것을 사용한 전기 제품
KR20090128104A (ko) * 2008-06-10 2009-12-15 코오롱패션머티리얼 (주) 투습방수원단 및 그의 제조방법
KR20090128097A (ko) * 2008-06-10 2009-12-15 코오롱패션머티리얼 (주) 나노섬유 웹을 포함하는 투습방수원단의 제조방법
KR20100024119A (ko) * 2008-08-25 2010-03-05 코오롱패션머티리얼 (주) 나노섬유를 이용한 방수원단

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104073895A (zh) * 2014-07-03 2014-10-01 东华大学 一种取向沟槽微/纳米纤维及其制备方法
CN115787298A (zh) * 2022-12-01 2023-03-14 天津日津科技股份有限公司 一种黑色双疏防水透气膜及其制备方法

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