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WO2017119798A2 - Procédé de fabrication de cuir artificiel - Google Patents

Procédé de fabrication de cuir artificiel Download PDF

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Publication number
WO2017119798A2
WO2017119798A2 PCT/KR2017/000284 KR2017000284W WO2017119798A2 WO 2017119798 A2 WO2017119798 A2 WO 2017119798A2 KR 2017000284 W KR2017000284 W KR 2017000284W WO 2017119798 A2 WO2017119798 A2 WO 2017119798A2
Authority
WO
WIPO (PCT)
Prior art keywords
artificial leather
solvent
based resin
manufacturing
urethane
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/KR2017/000284
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English (en)
Korean (ko)
Other versions
WO2017119798A3 (fr
Inventor
김남일
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.)
Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of WO2017119798A2 publication Critical patent/WO2017119798A2/fr
Anticipated expiration legal-status Critical
Publication of WO2017119798A3 publication Critical patent/WO2017119798A3/fr
Ceased legal-status Critical Current

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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
    • D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M15/564—Polyureas, polyurethanes or other polymers having ureide or urethane links; Precondensation products forming them
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/693—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with natural or synthetic rubber, or derivatives thereof
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/12—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins
    • D06N3/14—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyurethanes

Definitions

  • the present invention relates to a method of manufacturing artificial leather.
  • Artificial leather is widely used as a material that can replace natural leather with the development of technology related to fibers and polymers. Artificial leather has been adopted in various fields because it can provide flexibility and extensibility not expected from natural leather.
  • An object of the present invention is to provide a method for producing artificial leather having excellent physical properties through an environmentally friendly manner.
  • the present invention can adopt one of the group consisting of a solventless urethane resin, a latex material, an aqueous urethane resin, and a mixture thereof as the polymer elastic body.
  • Solvent-free urethane-based resin is impregnated in a nonwoven felt (S210), it is heat-cured for 72 to 96 hours at room temperature or 20 ⁇ 80 °C can be produced as a post-dissolution artificial leather.
  • the impregnating cloth is a step of impregnating the impregnated cloth in a mixed liquid of silica aerosol and water; Drying and washing; And removing the silica powder.
  • the impregnation cloth may further include a step (S220) of impregnating a latex or an aqueous urethane-based resin.
  • the solvent contains an aqueous alkali solution, wherein the aqueous alkali solution preferably consists of a dilute sodium hydroxide aqueous solution, and particularly consists of a 10% aqueous sodium hydroxide solution.
  • the post-elute foam of the present invention further comprises the step (S400) of applying an adhesive layer on its surface.
  • nubuck-type artificial leather After elution can be produced nubuck-type artificial leather through the curing step (S410) and surface treatment step (S420) of the adhesive layer.
  • the present invention comprises the steps of preparing a release paper formed a variety of embossed pattern and applying a skin-based urethane resin on the release paper (S500); After applying the adhesive layer and the step of combining the release paper coated with the urethane-based resin for the skin (S600); and can further include artificial leather formed a variety of patterns and patterns on the skin layer.
  • the back side of the post-containing cloth may further include a step (S800) of applying a solvent-free urethane-based resin.
  • the artificial leather may further include the step (S900) of applying a flame retardant on the surface or the back.
  • the present invention can be produced in an environmentally friendly leather by excluding the use of volatile organic solvents.
  • the present invention will be able to obtain an artificial leather that provides excellent elasticity, compressibility, volume, and durability than natural leather through the artificial leather formed with a microporous layer.
  • the present invention can produce a post-dissolution artificial leather, nubuck artificial leather, and skin type artificial leather with various pattern patterns according to the user's purpose and taste through a series of manufacturing methods.
  • FIG. 1 is a process flow chart according to the manufacturing method of artificial leather according to a preferred embodiment of the present invention.
  • FIG. 1 is a process flow chart according to the manufacturing method of artificial leather according to a preferred embodiment of the present invention.
  • the present invention is to produce an artificial leather using a microfiber nonwoven fabric, not only can provide a surface granularity and texture similar to natural leather, but also provide an environmentally friendly artificial leather without using a volatile organic solvent during the manufacturing process.
  • the present invention includes the step (S100) of supplying the nonwoven felt.
  • the supplying step (S100) of the nonwoven fabric felt includes preparing a island-in-the-sea fiber (S110), and preparing a nonwoven fabric felt (S120) using the island-in-the-sea fiber.
  • the manufacturing step (S110) of the island-in-the-sea fiber described above is a composite spinning of the first polymer of island component remaining in the solvent and the second polymer of sea component dissolved in the solvent and eluted. Through it can provide a thin island.
  • the island-in-the-sea yarn is a kind of composite yarn composed of two polymers having different solubility in solvent as described above.
  • the first polymer may be made of polyester or nylon that is not soluble in an alkaline solvent, and is not limited thereto, and may be sufficiently substituted with a polymer elastomer that is not soluble in an alkali solvent.
  • the second polymer prevents breakage or detachment of the first polymer during the island-in-the-sea yarn manufacturing process, it is possible to employ a polyester which is easily decomposed in an aqueous alkali solution.
  • the island-in-the-sea fibers can be composed of 70 wt% of the first polymer and 30 wt% of the second polymer.
  • the island-in-the-sea yarn in the staple state may form a web through a carding process or the like, and stack the web to manufacture a nonwoven felt (also known as nonwoven fabric) through a needle punch (S120).
  • a nonwoven felt also known as nonwoven fabric
  • S120 needle punch
  • the present invention produces the impregnated fabric through the step (S200) of impregnating the polymer elastic body in the prefabricated nonwoven felt.
  • the polymer elastomer is able to provide a dense and uniform porous shape while being filled in the three-dimensional fall-out nonwoven fabric.
  • the polymer elastomer may be selected from the group consisting of solvent-free urethane resins, latex materials, aqueous urethane resins, and mixtures thereof, depending on the intended use.
  • the nonwoven felt is impregnated with a solvent-free urethane-based resin (S210) and cured for about 72 hours to 96 hours (about 3 days) at room temperature or 20 to 80 ° C.
  • Solvent-free urethane-based resin not only strengthens the binding force between nonwoven fabric felts while crosslinking nonwoven fabrics in three dimensions, but also voids where polymer elastomers do not penetrate remain after artificial leather to form a better texture and elasticity of urethane's inherent properties. And durability such as flexibility can be provided to the impregnated fabric.
  • the impregnated fabric hardened not only provides a texture of tackyness (stickiness) but also helps to form a coating layer in a later step (S400). Impregnation of the urethane-based resin and the impregnated cloth provides a peeling phenomenon and cannot be marketed as the impregnated cloth itself without further processing.
  • the present invention further performs the following process to complement the tackiness to the impregnated cloth cured through the solvent-free urethane-based resin impregnation step (S210). First, the impregnated cloth is impregnated with a mixed solution of silica aerosol and water and dried. After drying, the impregnated cloth is washed with water to remove silica powder.
  • the present invention may be impregnated with SBR-based latex, NBR-based latex, CR-based latex in the nonwoven felt of step (S120) or impregnated fabric of step (S210) (S220).
  • the latex provides the elasticity of the impregnated cloth and at the same time provides the advantage of maintaining the manufacturing cost.
  • Step S220 may be impregnated with an aqueous urethane-based resin (aka 73) in addition to the above-described latex according to the quality of the finished product.
  • an aqueous urethane-based resin aka 73
  • the tackiness may be completely removed by impregnating the latex or aqueous urethane-based resin of step (S220).
  • the impregnated cloth passed through step (S220) allows the water component contained in the aqueous urethane-based resin and the slippery oil component contained in the solvent-free urethane-based resin to be mixed without a surfactant to ensure a reliable adhesion state. This can maintain a firm bond between the nonwoven felt and the impregnated aqueous urethane-based resin of step (S220) and the film-forming aqueous urethane-based resin of step (S400).
  • the present invention can provide a property that is not easily torn with a soft texture, such as natural leather by the water component and the oil component through the impregnation step (S200) of the polymer elastomer.
  • the present invention can be provided with excellent moisture permeability and breathability than natural leather by forming a fine hole through the drying process of the aqueous component through the aqueous chemical impregnation method rather than the conventional laminating method.
  • the present invention includes an elution step (S300) for removing soluble components with a solvent, especially an aqueous alkali solution.
  • the impregnated fabric may be reacted with a solvent to elute or decompose and remove the second polymer as a soluble component to produce a post-eluted foam.
  • a void is formed between the nonwoven felt and the polymer elastomer by using a volatile organic solvent such as dimethylformamide.
  • a volatile organic solvent such as dimethylformamide.
  • the present invention can produce artificial leather in an environmentally friendly process that can significantly reduce wastewater and air pollution by using an aqueous alkali solution as a solvent without using dimethylformamide.
  • the present invention employs, for example, about 10% aqueous sodium hydroxide solution as a solvent, and the impregnated cloth is immersed in the aqueous sodium hydroxide solution to remove the second polymer.
  • a dilute solution of sodium hydroxide provides the advantage of not damaging the polymeric elastomer and voids while eluting the second polymer.
  • the solvent elutes only the second polymer, leaving only polyester or nylon and a polymer elastomer (solvent-free urethane resin and / or latex).
  • the present invention is to produce the eluent after eluting the sea component and forming a microporous layer by micronized the nonwoven felt felt.
  • the present invention is dried after removing the component to be eluted. Then, the post-exposure blister can be marketed as an artificial leather by a series of surface treatments such as dyeing, smoothing, polishing, buffing, sanding, and the like.
  • the present invention includes a step (S400) of applying an adhesive layer to the post-elut foam obtained in step (S300).
  • the adhesive layer may be laminated or impregnated by applying an adhesive synthetic resin, such as an aqueous urethane-based resin, on the cured surface of the post elution cloth.
  • the adhesive layer may be evenly applied to the entire surface of the post-treatment foam or may be partially patterned and applied as necessary.
  • the portion where the adhesive layer is not applied may form an napped portion made of ultrafine fibers.
  • the present invention completely cures the adhesive layer applied to the surface of the post-dissolution foam through a process such as drying (S410).
  • the surface of the post-exposure foam forms a coating layer formed by curing the adhesive layer.
  • the coating layer forms a soft and soft surface touch, surface abrasion resistance, and three-dimensional feeling on the surface to produce nubuck artificial leather. do.
  • the artificial leather drying the adhesive layer of the post-exposure foam can provide a nubuck-type artificial leather expressing a different unevenness and differentiation from the post-dissolution type artificial leather through the surface treatment step (S420) such as sanding.
  • the present invention is characterized in that it is possible to produce artificial leather with a pattern such as embossing on the surface of the post-treatment bubble.
  • the present invention includes a step (S500) to prepare a release paper on which the embossed pattern is formed.
  • Release paper forms a variety of patterned patterns as described above, on which the urethane-based resin for skin (skin) is applied and cured.
  • the urethane-based resin for skin forms a skin layer that matches the embossed shape of the release paper.
  • the urethane-based resin for skin may be an aqueous urethane-based resin.
  • the present invention includes the step (S600) of laminating the pattern transfer paper (S500) on the elution foam (S400) after applying the adhesive layer.
  • the skin-based urethane-based resin applied to the release paper is placed on the adhesive layer applied on the surface of the post-expanded foam, and then laminated.
  • the release paper is peeled off (S700) and the skin layer cured to the embossed shape of the release paper is combined with the post-treatment bubble to laminate the skin layer on the surface of the post-treatment bubble.
  • the skin layer is fixed in a stacked state by means of an adhesive layer applied / impregnated on the surface of the post-treatment bubble.
  • the skin layer and the post-explosion bubble may be pressed through a roller to simultaneously strengthen the cohesion of the adhesive layer and planarize the artificial leather.
  • Artificial leather coated with a skin layer can provide fine and sophisticated patterns and patterns on the surface of artificial skin by release paper.
  • the present invention may be applied and / or impregnated with the solvent-free urethane resin on the back surface of the post-expanded foam according to the use purpose (S800). Since the surface of the post-exposure bubble is coated and / or impregnated with an adhesive layer through step S400, impregnating a solvent-free urethane resin on the back surface may impart surface wear resistance and elasticity.
  • the present invention may further include the step (S900) of applying a flame retardant to the surface and / or back of the post-dissolution artificial leather or nubuck artificial leather.
  • the flame retardant is to be fixed on the surface of the skin layer of the artificial leather or on the opposite back thereof, it should be able to retain the volume and soft touch of the artificial leather even when the flame retardant is fixed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Dispersion Chemistry (AREA)
  • Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)

Abstract

La présente invention concerne un procédé permettant de fabriquer du cuir artificiel et une étoffe post-éluée qui peut être produite par les étapes suivantes : (S100) l'alimentation en feutre d'étoffe non tissée par un fil conjugué comprenant un premier polymère, qui n'est pas dissous par un solvant, et un second polymère, qui est élué par dissolution par le solvant ; (S200) la fabrication d'un tissu imprégné par imprégnation d'un corps élastique polymère dans le feutre d'étoffe non tissée ; et (S300) l'élution postérieure du second polymère à partir du tissu imprégné. De plus, selon la présente invention, du cuir artificiel de type Nubuck peut être fabriqué en revêtant une couche adhésive sur une étoffe post-éluée pré-produite, et du cuir artificiel présentant divers motifs de peau peut également être fabriqué.
PCT/KR2017/000284 2016-01-08 2017-01-09 Procédé de fabrication de cuir artificiel Ceased WO2017119798A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2016-0002366 2016-01-08
KR1020160002366A KR101811584B1 (ko) 2016-01-08 2016-01-08 인공피혁의 제조방법

Publications (2)

Publication Number Publication Date
WO2017119798A2 true WO2017119798A2 (fr) 2017-07-13
WO2017119798A3 WO2017119798A3 (fr) 2018-08-02

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PCT/KR2017/000284 Ceased WO2017119798A2 (fr) 2016-01-08 2017-01-09 Procédé de fabrication de cuir artificiel

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KR (1) KR101811584B1 (fr)
WO (1) WO2017119798A2 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101969325B1 (ko) * 2018-08-21 2019-04-17 주식회사 코더 천연피혁의 은면층과 유두층을 구현한 친환경 누벅형 인공피혁의 제조방법.
KR101969324B1 (ko) * 2018-08-21 2019-04-17 주식회사 코더 천연피혁의 은면층과 유두층을 구현한 친환경 갑피형 인공피혁의 제조방법.
KR102674675B1 (ko) * 2021-10-27 2024-06-12 (주)타스지혁 친환경 폴리우레탄 인조 피혁 및 이의 제조 공법

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100530570B1 (ko) * 1997-12-12 2006-01-27 주식회사 코오롱 습식라미네이팅용이형표지,이의제조방법및이를사용한라미네이트형투습방수포의제조방법.
JP3767826B2 (ja) * 2004-02-26 2006-04-19 大日本インキ化学工業株式会社 皮革様シートの製造方法
JP4633606B2 (ja) * 2005-11-15 2011-02-16 株式会社クラレ 難燃性皮革様シートおよび皮革様シートの難燃加工方法
KR101310119B1 (ko) * 2007-12-13 2013-10-14 현대자동차주식회사 인공피혁 및 그의 제조방법
KR20150112355A (ko) * 2014-03-27 2015-10-07 코오롱인더스트리 주식회사 인공피혁의 제조방법

Also Published As

Publication number Publication date
WO2017119798A3 (fr) 2018-08-02
KR20170083657A (ko) 2017-07-19
KR101811584B1 (ko) 2017-12-26

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