WO2013032107A1 - Artificial leather using water-dispersible polyurethane and method for manufacturing the artificial leather - Google Patents

Artificial leather using water-dispersible polyurethane and method for manufacturing the artificial leather Download PDF

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Publication number
WO2013032107A1
WO2013032107A1 PCT/KR2012/003761 KR2012003761W WO2013032107A1 WO 2013032107 A1 WO2013032107 A1 WO 2013032107A1 KR 2012003761 W KR2012003761 W KR 2012003761W WO 2013032107 A1 WO2013032107 A1 WO 2013032107A1
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Prior art keywords
water
release paper
drying
artificial leather
polyurethane resin
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PCT/KR2012/003761
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French (fr)
Korean (ko)
Inventor
정지권
Original Assignee
주식회사 청강
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Priority claimed from KR1020110085416A external-priority patent/KR101134365B1/en
Application filed by 주식회사 청강 filed Critical 주식회사 청강
Publication of WO2013032107A1 publication Critical patent/WO2013032107A1/en

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    • 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
    • D06N3/0086—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the application technique
    • D06N3/0095—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the application technique by inversion technique; by transfer processes
    • D06N3/0097—Release surface, e.g. separation sheets; Silicone papers
    • 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 using a water-dispersed polyurethane used in shoes, bags, automotive interiors, furniture and sundries, and more particularly, the process of coating the water-dispersed polyurethane on a release paper and drying it.
  • the present invention relates to a method of manufacturing artificial leather and artificial leather using a water-dispersed polyurethane that repeatedly forms a film and adheres the formed film to a nonwoven fabric, and then releases a release paper to form a clear pattern on the surface of the artificial leather.
  • the primary and secondary steam chambers (8, 8 ') which are the temperature conditions of about 75 to 100 ° C, and inverting the coating cloth in which the water-dispersed polyurethane resin is solidified, passing the primary and secondary steam chambers again, followed by a washing process.
  • the primary and secondary steam chambers After dehydration through to manufacture artificial leather or water-based polyurethane water
  • the coagulated coating cloth was pressed and oiled together with the release paper 15 having a special pattern formed between the steam roller 13 and the silicon roller 14, it was left at a temperature of about 70 to 80 ° C. for about 10 hours. It is known to make specific patterns on the surface.
  • the non-woven fabric of which the water-dispersed polyurethane is solidified is pressed together with a release paper having a pattern using a steam roller to form a specific pattern on the surface of the artificial leather so that the irregularities of the pattern are not clear and the water dispersion is not clear.
  • the moisture content must be high, so that the density of artificial leather is lowered, thus the tensile strength is lowered and durability is lowered.
  • the surface pattern molding method of artificial leather formed of water-dispersed polyurethane resin' for the above purpose is a pattern of water-dispersible polyurethane solution with a water content of about 30%.
  • the release paper 102 wound on the unwinder 101 in roll form is transferred to the coating apparatus 104 via the tension adjusting device 103.
  • the release paper 102 is a release paper in which a pattern to be formed on the surface of artificial leather is continuously engraved, so that the water-dispersible polyurethane resin can be easily peeled off, so that the surface is coated with a silicone resin or polyethylene resin to show hydrophobicity. to be.
  • the tension control device 103 maintains a constant tension of the release paper 102 transferred to the coating device 104 and stops the process even when replacing the roll on which the release paper 102 is wound in the unwinder 101. It is a device which enables to work without a box, and is configured to be pulled out while reciprocating vertically between a plurality of rod-shaped rolls 105 provided above and below, and the end of the unwound paper passes through the tension adjusting device 103. It serves to provide a time to replace the winding roll of the paper 102 and to connect the distal end of the paper and the paper end to be unwinded.
  • the release paper 102 transferred to the coating apparatus 104 is coated with a water-dispersible polyurethane resin.
  • the water-based polyurethane resin has excellent fluidity and permeability when the water content is high, but the density after drying decreases not only the tensile strength or durability but also the hydrophobic surface and the repulsive force of the release paper 102 are difficult to coat uniformly. Even when the water content is low, fluidity is lowered, making it difficult to coat thinly.
  • the water content of the water-dispersed polyurethane coated directly on the release paper 102 is preferably about 7: 3 by weight ratio of the water-dispersed polyurethane and water, and an appropriate amount of pigment may be added in this process.
  • the coated release paper 102 is dried in the dry chamber 106 at a temperature of 110 ° C. to 130 ° C. for 3 to 5 minutes.
  • the primary coated and dried release paper 102 is repeatedly coated with the water-dispersed polyurethane resin in the coating apparatus 104 'secondly and dried in the same conditions as the primary drying in the dry chamber 106'.
  • the number of coatings of the water-dispersed polyurethane resin on the release pair 102 is not particularly limited, but a thick coating at one time may delay the drying process and cause defects in the water evaporation process. It is preferable to coat.
  • the coated laminate of the water-dispersed polyurethane resin on the release paper 102 and the dried laminate 107 are subjected to an application device 108 for applying the water-dispersed urethane adhesive under a drying temperature of 100 ° C. in the semi-dry chamber 109.
  • the release paper 102 When the release paper 102 is peeled off from the matured laminate 107, the artificial leather of the present invention is completed, and the release paper 102 is known in the art that the peeled release paper 102 can be wound up and reused.
  • the present invention has been invented to solve the above problems, by using a release paper coated with PP resin can more clearly form the surface pattern of artificial leather, it is possible to increase the density of the water-dispersed polyurethane artificial It is to provide an artificial leather using a water-dispersed polyurethane that can improve the tensile strength and durability of the leather, and can also repeatedly use the release paper which is a release paper forming the surface pattern of the artificial leather.
  • the present invention relates to a method of manufacturing artificial leather using a water-dispersed polyurethane, in the method of manufacturing an artificial leather in which irregularities are formed on the surface of the water-dispersed polyurethane resin, the water-dispersed polyurethane resin and water in a weight ratio Dispersing to 8: 2; Coating a water-dispersed polyurethane resin with a predetermined thickness on the release paper 102 having the concavo-convex pattern engraved on the surface, and repeating the drying in the dry chamber 106; Applying a water-dispersed urethane adhesive to the laminate 107 coated on the release paper and dried, and drying the semi-dried chamber 109; Bonding the fabric paper 110 to the laminate coated with the adhesive, and then pressing the fabric paper 110 and drying the semi-dried chamber 109 ', and then compressing the fabric paper 110 again with the pressing roller 111; It characterized in that it comprises a; step of peeling the release paper after aging for a certain period of time in the
  • the present invention relates to an artificial leather using a water-dispersible polyurethane, in the artificial leather in which the uneven pattern is formed on the surface, the uneven pattern is dispersed in a weight ratio of 8: 2 water dispersion polyurethane resin and water, After coating and drying a plurality of layers on the release paper 102 having the concave-convex pattern on the surface, after combining the fabric paper 110 using an adhesive, it is characterized in that formed by peeling the release paper.
  • the artificial leather and the artificial leather manufacturing method of the present invention can use the release paper coated with PP resin to form a clear concavo-convex pattern on the surface of the artificial leather formed of water-dispersed polyurethane resin, water-dispersed polyurethane It can lower the moisture content of the synthetic leather to increase the durability and wear resistance by increasing the density of the artificial leather, recycle the release paper without damage, produce more luxurious artificial leather, and also use the water-dispersed polyurethane resin There is a remarkable effect to create an environmentally friendly working environment.
  • FIG. 1 is a cross-sectional view of a conventional surface pattern forming apparatus
  • Figure 2 is a schematic cross-sectional view of the artificial leather surface glyph forming apparatus formed of a conventional water-dispersible polyurethane resin
  • Figure 3 is a process chart for manufacturing artificial leather using the water-dispersed polyurethane of the present invention
  • the present invention relates to a method of manufacturing artificial leather using a water-dispersed polyurethane, in the method of manufacturing an artificial leather in which irregularities are formed on the surface of the water-dispersed polyurethane resin, the water-dispersed polyurethane resin and water in a weight ratio Dispersing to 8: 2; Coating a water-dispersed polyurethane resin with a predetermined thickness on the release paper 102 having the concavo-convex pattern engraved on the surface, and repeating the drying in the dry chamber 106; Applying a water-dispersed urethane adhesive to the laminate 107 coated on the release paper and dried, and drying the semi-dried chamber 109; Bonding the fabric paper 110 to the laminate coated with the adhesive, and then pressing the fabric paper 110 and drying the semi-dried chamber 109 ', and then compressing the fabric paper 110 again with the pressing roller 111; It characterized in that it comprises a; step of peeling the release paper after aging for a certain period of time in the
  • the number of steps of repeating the operation to dry the coating in the dry chamber 106 and the water-dispersed polyurethane resin on the surface of the release paper 102 indented concave-convex pattern is characterized in that 2 to 3 times.
  • the concave-convex pattern is engraved on the surface and drying in the dry chamber 106, the drying operation at a temperature of 130 ⁇ 150 °C It is characterized by drying for 3 to 5 minutes.
  • the laminate of the water-dispersed polyurethane resin and the dried laminate 107 on the release paper 102 is 90 ⁇ 110 in the semi-dry chamber 109 through the coating device 108 for applying the water-dispersed urethane adhesive
  • the dried laminate is once again pressed by a pressing roller 111 and passed through a winder 112 wound on a roll to a aging chamber 113 aged at a temperature of 90 ° C to 110 ° C for 12 to 24 hours. Characterized in that it is stored.
  • the woven paper is characterized in that the non-woven fabric or maryas.
  • the release paper 102 is characterized in that the surface is coated with a polypropylene (PP) resin so that the surface pattern of the water-dispersed polyurethane resin more clear.
  • PP polypropylene
  • the water-dispersed polyurethane resin and water is characterized in that the step of dispersing to 8: 2: by weight ratio.
  • the present invention relates to an artificial leather using a water-dispersible polyurethane, in the artificial leather in which the uneven pattern is formed on the surface, the uneven pattern is dispersed in a weight ratio of 8: 2 water dispersion polyurethane resin and water, After coating and drying a plurality of layers on the release paper 102 having the concave-convex pattern on the surface, after combining the fabric paper 110 using an adhesive, it is characterized in that formed by peeling the release paper.
  • the release paper 102 is characterized in that the impermeable film exhibiting a hydrophobic coating of polypropylene (PP) resin on the paper to more clearly form the surface pattern of the water-dispersed polyurethane resin.
  • PP polypropylene
  • FIG. 1 is a cross-sectional view of a conventional surface pattern forming apparatus
  • Figure 2 is a schematic cross-sectional view of the artificial leather surface pattern forming apparatus formed of a conventional water-dispersible polyurethane resin
  • Figure 3 is a production of artificial leather using the water-dispersed polyurethane of the present invention Method flow chart.
  • the process of the present invention is to repeat the process of coating a water-dispersible polyurethane solution with a water content of about 20% on a release paper that is a patterned release paper and drying, forming a film, and then applying an adhesive to the formed film to compress a nonwoven fabric such as After bonding, drying and aging for a certain period of time, the release paper is peeled off to complete the artificial leather.
  • the release paper 102 wound on the unwinder 101 in roll form is transferred to the coating apparatus 104 via the tension adjusting device 103.
  • the release paper 102 is a release paper in which the pattern to be formed on the surface of the artificial leather is engraved continuously, so that the surface pattern of the water-dispersed polyurethane resin can be more clearly formed. It is an impermeable film which shows.
  • Conventional release paper has a disadvantage that embossing (unevenness) is not well formed on the surface is coated with silicone or polyethylene resin, while release paper coated with polypropylene (PP) resin of the present invention is embossed to the desired shape on the surface There is an advantage that can easily form (uneven).
  • the tension control device 103 maintains a constant tension of the release paper 102 transferred to the coating device 104 and stops the process even when replacing the roll on which the release paper 102 is wound in the unwinder 101. It is a device which enables to work without a box, and is configured to be pulled out while reciprocating vertically between a plurality of rod-shaped rolls 105 provided above and below, and the end of the unwound paper passes through the tension adjusting device 103. It serves to provide a time to replace the winding roll of the paper 102 and to connect the distal end of the paper and the paper end to be unwinded.
  • the release paper 102 transferred to the coating apparatus 104 is coated with a water-dispersible polyurethane resin.
  • the water-based polyurethane resin has excellent fluidity and permeability when the water content is high, but the density after drying decreases the tensile strength and durability, as well as the hydrophobic surface and the repulsive force of the release paper 102, which makes it difficult to coat uniformly. Even when the water content is low, fluidity is lowered, making it difficult to coat thinly.
  • the water content of the water-dispersed polyurethane coated directly on the release paper 102 is about 8: 2 by weight ratio of the water-dispersed polyurethane and water.
  • 20 parts by weight of water is mixed with 80 parts by weight of the water-dispersed polyurethane.
  • water is less than 20 parts by weight with respect to 80 parts by weight of the water-dispersed polyurethane, fluidity is lowered, making it difficult to coat thinly.
  • the water exceeds 20 parts by weight, the density is lowered after drying, not only the tensile strength or durability is lowered, but also the hydrophobic surface and the repulsive force of the release paper 102 are difficult to uniformly coat.
  • an aqueous toner for producing an appropriate amount of pigment and color may be added.
  • the drying operation is a temperature of 130 ⁇ 150 °C Drying under 3 to 5 minutes is appropriate.
  • the temperature is less than 130 °C is not dry well, if the temperature exceeds 150 °C the coating layer is deteriorated. If the drying time is less than 3 minutes, the drying is insufficient, and if the drying time exceeds 5 minutes, the coating layer is deteriorated.
  • the primary coated and dried release paper 102 is repeatedly coated with the water-dispersed polyurethane resin in the coating apparatus 104 'secondly and dried in the same conditions as the primary drying in the dry chamber 106'.
  • the drying process in the dry chamber is thickened at a time, the drying process is delayed and in the water evaporation process Defects occur, and if it is repeated more than three times, foreign substances such as dust are added to make the coating layer dirty and costly to manufacture. Therefore, 2-3 times is appropriate.
  • the laminated paper 107 coated with the water-dispersed polyurethane resin on the release paper 102 and dried is 107 at a temperature of 90 to 110 ° C. in the semi-dry chamber 109 through an applicator 108 for applying the water-dispersed urethane adhesive.
  • the adhesive After drying the adhesive for 20 to 30 seconds under a drying temperature, then laminated with a non-woven fabric or fabric paper 110, such as Maryas, and pressed, and then in a semi-dry chamber (109 ') for 3 to 5 minutes at a temperature of 130 ⁇ 150 °C After drying, the dried laminate is once again pressed into a pressing roller 111 and passed through a winder 112 wound on a roll to a aging chamber 113 aged for 12 to 24 hours in a temperature atmosphere of 90 ° C to 110 ° C. Stored.
  • a non-woven fabric or fabric paper 110 such as Maryas
  • the mixture is aged for 12 hours to 24 hours in a temperature atmosphere of 90 ° C to 110 ° C.
  • the temperature is lower than 90 ° C, aging does not occur well. If the drying time is less than 12 hours, the aging is insufficient, and if it exceeds 24 hours, the coating layer is deformed.
  • the release paper 102 is peeled off from the matured laminate 107, the artificial leather of the present invention is completed, and the peeled release paper 102 is wound and reused.
  • the manufacturing apparatus of the artificial leather using the water-dispersed polyurethane used in the present invention may use the same apparatus as the conventional manufacturing apparatus.
  • the manufacturing apparatus is the same as the apparatus used in the conventional invention in Figures 1 and 2.
  • the artificial leather manufacturing method of the present invention can make a clear concavo-convex pattern on the surface of the artificial leather formed of the water-dispersed polyurethane resin by using the release paper coated with PP resin, and the moisture content of the water-dispersed polyurethane It can be lowered to increase the density of artificial leather to improve durability and wear resistance, to recycle the release paper without damage, to produce more luxurious artificial leather, and to use environmentally friendly work by using a dispersion of polyurethane resin. There is a remarkable effect on the environment.

Abstract

The present invention relates to an artificial leather using water-dispersible polyurethane, and to a method for manufacturing the artificial leather. A method for manufacturing an artificial leather having a surface with a pattern having concavities and convexities using the water-dispersible polyurethane resin, comprises the steps of: adjusting the water-dispersible polyurethane resin and water to have a weight ratio of 8:2; repeatedly coating a release paper (102), having a surface with a pattern having concavities and convexities, with the water-dispersible polyurethane resin to a predetermined thickness and drying the resultant structure in a dry chamber (106); applying a water-dispersible urethane adhesive to a laminate (107), which has been coated onto the release paper and dried, and drying the resultant structure in a semi-dry chamber (109); combining a textile (110) with the laminate, which has been coated with the adhesive and dried, compressing the resultant structure, drying the resultant structure in a semi-dry chamber (109'), and then re-compressing the resultant structure using a compression roller (111); and aging the laminate, which has been combined with the textile, for a predetermined time in an aging chamber (113) and delaminating the release paper. The method for manufacturing the artificial leather according to the present invention involves the use of a release paper coated with a polypropylene resin to form a clearer pattern having convexities and concavities on the surface of the artificial leather made of the polyurethane resin and to lower the moisture content of the water-dispersible polyurethane, thus increasing the density of the artificial leather and improving the durability and abrasion resistance thereof.

Description

수분산 폴리우레탄을 이용하는 인조피혁 및 인조피혁 제조방법Artificial leather and artificial leather manufacturing method using water-dispersed polyurethane
본 발명은 신발, 가방, 자동차 내장제, 가구 및 잡화류 등에 사용되는 수분산 폴리우레탄을 이용하는 인조피혁의 제조방법에 관한 것으로, 보다 상세하게는 수분산 폴리우레탄을 릴리즈페이퍼에 코팅한 후 건조하는 공정을 반복하여 필름을 형성하고 형성된 필름을 부직포에 접착한 후 릴리즈페이퍼를 박리하여 인조피혁의 표면에 선명한 문양을 형성하는 수분산 폴리우레탄을 이용하는 인조피혁 및 인조피혁 제조방법에 관한 것이다.The present invention relates to a method of manufacturing artificial leather using a water-dispersed polyurethane used in shoes, bags, automotive interiors, furniture and sundries, and more particularly, the process of coating the water-dispersed polyurethane on a release paper and drying it. The present invention relates to a method of manufacturing artificial leather and artificial leather using a water-dispersed polyurethane that repeatedly forms a film and adheres the formed film to a nonwoven fabric, and then releases a release paper to form a clear pattern on the surface of the artificial leather.
종래 수분산 폴리우레탄을 이용하는 인조피혁의 제조방법으로는 본출원인이 발명자로서 발명한 등록특허공보 등록번호 10-0856906호(공고일자 2008년09월05일)에 종래기술로 기재된 바와 같이, 공개특허 제2003-4840호에 부직포(1)상에 함수율 50% 내지 70%정도의 수분산 폴리우레탄수지(2)를 1차로 함침한 후 건조시켜 함침포(5a)를 만드는 공정과, 상기 함침포상면에 점증제가 혼합된 수분산 폴리우레탄수지를 0.5~1.5mm정도의 두께로 나이프커터(7)를 사용하여 코팅하여 코팅포(5b)를 형성하는 공정과, 그리고 코팅포를 1, 2차에 걸쳐 약 75~100℃의 온도조건인 1, 2차 스팀챔버(8, 8')를 경유시키고 수분산 폴리우레탄수지가 응고완료된 코팅포를 반전시켜 1, 2차 스팀챔버를 재차 경유시킨 후 수세공정을 거쳐 탈수한 후 인조피혁을 제조하거나 또는 수분산 폴리우레탄수지가 응고완료된 코팅포를 스팀로울러(13)와 실리콘로울러(14) 상간에 특수문양이 형성된 이형지(15)와 함께 압착경유 시킨 후 약 70~80℃의 온도하에서 약 10시간 정도 방치시켜 인조피혁의 표면에 특정문양이 형성되게 하는 방법이 공지되어 있었다.As a manufacturing method of artificial leather using a conventional water-dispersed polyurethane, as disclosed in the prior art in the registered patent publication No. 10-0856906 (published date September 09, 2008), the inventor of the present invention as an inventor, A process of first impregnating a water-dispersed polyurethane resin (2) having a water content of about 50% to 70% on a nonwoven fabric (1) and drying it to make an impregnated fabric (5a); Coating a water-dispersible polyurethane resin mixed with a thickening agent with a thickness of about 0.5-1.5 mm using a knife cutter (7) to form a coating cloth (5b), and coating the coating cloth over the first and second stages. After passing through the primary and secondary steam chambers (8, 8 '), which are the temperature conditions of about 75 to 100 ° C, and inverting the coating cloth in which the water-dispersed polyurethane resin is solidified, passing the primary and secondary steam chambers again, followed by a washing process. After dehydration through to manufacture artificial leather or water-based polyurethane water After the coagulated coating cloth was pressed and oiled together with the release paper 15 having a special pattern formed between the steam roller 13 and the silicon roller 14, it was left at a temperature of about 70 to 80 ° C. for about 10 hours. It is known to make specific patterns on the surface.
그러나 상기의 종래 제조방법은 수분산 폴리우레탄이 응고완료된 부직포를 스팀로울러를 이용하여 문양이 형성된 이형지와 함께 압착하여 인조피혁의 표면에 특정문양이 형성되게 함으로써 문양의 요철이 선명하지 못하였고 수분산 폴리우레탄을 부직포에 함침하기 위하여는 함수율이 높아져야 하므로 인조피혁의 밀도가 낮아져 인장강도가 저하되고 내구성이 떨어진다는 문제점이 있었다.However, in the conventional manufacturing method, the non-woven fabric of which the water-dispersed polyurethane is solidified is pressed together with a release paper having a pattern using a steam roller to form a specific pattern on the surface of the artificial leather so that the irregularities of the pattern are not clear and the water dispersion is not clear. In order to impregnate the polyurethane with a nonwoven fabric, the moisture content must be high, so that the density of artificial leather is lowered, thus the tensile strength is lowered and durability is lowered.
따라서 상기의 등록특허공보 등록번호 10-0856906호에는, 상기한 목적을 위한 ‘수분산 폴리우레탄수지로 형성되는 인조피혁의 표면문양 성형방법’은 함수율 30%정도의 수분산 폴리우레탄용액을 문양이 형성된 이형지인 릴리즈페이퍼에 코팅하고 건조하는 공정을 반복하여 필름을 형성하고 형성된 필름에 접착제를 도포하여 부직포와 같은 직물지에 압착하여 접착하고 건조한 다음 일정기간 숙성한 후 릴리즈페이퍼를 박리하여 인조피혁을 완성한다.Therefore, in the above-mentioned Patent Publication No. 10-0856906, 'the surface pattern molding method of artificial leather formed of water-dispersed polyurethane resin' for the above purpose is a pattern of water-dispersible polyurethane solution with a water content of about 30%. Repeat the process of coating and drying the release paper, which is formed release paper, to form a film, and then apply an adhesive to the formed film is pressed to the fabric paper such as non-woven fabric, bonded and dried, and aged for a certain period of time after the release paper is peeled off to complete the artificial leather do.
언와이인더(101)에 롤상으로 권취된 릴리즈페이퍼(102)는 장력조절장치(103)를 거쳐 코팅장치(104)로 이송된다. The release paper 102 wound on the unwinder 101 in roll form is transferred to the coating apparatus 104 via the tension adjusting device 103.
릴리즈페이퍼(102)는 인조피혁의 표면에 형성될 문양이 연속적으로 음각된 이형지로 수분산 폴리우레탄수지가 용이하게 박리될 수 있도록 표면에는 실리콘수지 또는 폴리에틸렌수지가 코팅되어 있어 소수성을 나타내는 불침투성 필름이다.The release paper 102 is a release paper in which a pattern to be formed on the surface of artificial leather is continuously engraved, so that the water-dispersible polyurethane resin can be easily peeled off, so that the surface is coated with a silicone resin or polyethylene resin to show hydrophobicity. to be.
장력조절장치(103)는 코팅장치(104)로 이송되는 릴리즈페이퍼(102)의 장력을 일정하게 유지하고 언와인더(101)에서 릴리즈페이퍼(102)가 권취된 롤을 교체할 때에도 공정을 중단함이 없이 작업할 수 있게 하는 장치로서 상·하에 구비된 다수의 봉상롤(105) 사이를 수직으로 왕복하면서 인출되게 구성하여 언와인딩되는 페이퍼의 종단부가 장력조절장치(103)를 통과하는 도중에 릴리즈페이퍼(102)의 권취롤을 교체하고 언와인딩되는 페이퍼종단부와 교체되는 페이퍼의 선단부를 연결할 수 있도록 하는 시간을 제공하는 역할을 한다.The tension control device 103 maintains a constant tension of the release paper 102 transferred to the coating device 104 and stops the process even when replacing the roll on which the release paper 102 is wound in the unwinder 101. It is a device which enables to work without a box, and is configured to be pulled out while reciprocating vertically between a plurality of rod-shaped rolls 105 provided above and below, and the end of the unwound paper passes through the tension adjusting device 103. It serves to provide a time to replace the winding roll of the paper 102 and to connect the distal end of the paper and the paper end to be unwinded.
코팅장치(104)로 이송되는 릴리즈페이퍼(102)에는 수분산 폴리우레탄수지가 코팅된다.The release paper 102 transferred to the coating apparatus 104 is coated with a water-dispersible polyurethane resin.
수분산 폴리우레탄수지는 물함유량이 높을 경우에는 유동성과 침투성이 우수하나 건조 후 밀도가 낮아져 인장강도나 내구성이 떨어질 뿐 아니라 릴리즈페이퍼(102)의 소수성표면과 반발력이 작용하여 균일하게 코팅하기가 어려워지며 물의 함유량이 낮을 경우에도 유동성이 저하되어 얇게 코팅하기가 어려워진다.The water-based polyurethane resin has excellent fluidity and permeability when the water content is high, but the density after drying decreases not only the tensile strength or durability but also the hydrophobic surface and the repulsive force of the release paper 102 are difficult to coat uniformly. Even when the water content is low, fluidity is lowered, making it difficult to coat thinly.
따라서 릴리즈페이퍼(102)에 직접 코팅하는 수분산 폴리우레탄의 물함유량은 수분산 폴리우레탄과 물의 중량비로 7:3 정도가 되게 하는 것이 바람직하며 이 과정에서 적당량의 안료를 추가할 수도 있다.Accordingly, the water content of the water-dispersed polyurethane coated directly on the release paper 102 is preferably about 7: 3 by weight ratio of the water-dispersed polyurethane and water, and an appropriate amount of pigment may be added in this process.
릴리즈페이퍼(102)가 코팅장치(104)에서 1차로 코팅되면 코팅된 릴리즈페이퍼(102)는 드라이챔버(106)에서 110℃ 내지 130℃의 온도하에서 3분 내지 5분간 건조된다.When the release paper 102 is first coated in the coating apparatus 104, the coated release paper 102 is dried in the dry chamber 106 at a temperature of 110 ° C. to 130 ° C. for 3 to 5 minutes.
1차 코팅되고 건조된 릴리즈페이퍼(102)는 반복하여 코팅장치(104')에서 2차로 수분산 폴리우레탄수지로 코팅되며 드라이챔버(106')에서 1차 건조와 동일한 조건으로 건조된다.The primary coated and dried release paper 102 is repeatedly coated with the water-dispersed polyurethane resin in the coating apparatus 104 'secondly and dried in the same conditions as the primary drying in the dry chamber 106'.
릴리즈페어퍼(102)에 수분산 폴리우레탄수지를 코팅하는 횟수는 특별히 제한되지는 않으나 한 번에 두껍게 코팅하면 건조과정이 지연되고 수분증발과정에서 불량이 발생할 수 있으므로 용도에 따라서 여러 번에 걸쳐 얇게 코팅하는 것이 바람직하다.The number of coatings of the water-dispersed polyurethane resin on the release pair 102 is not particularly limited, but a thick coating at one time may delay the drying process and cause defects in the water evaporation process. It is preferable to coat.
릴리즈페이퍼(102)에 수분산 폴리우레탄수지의 코팅과 건조가 끝난 적층체(107)는 수분산 우레탄접착제를 도포하는 도포장치(108)를 거쳐 세미드라이챔버(109)에서 100℃의 건조온도하에서 20초 동안 접착제를 반건조한 다음 부직포나 메리야스 등 직물지(110)와 적층하고 압착한 후 세미드라이챔버(109')에서 130℃의 온도하에서 3분 내지 5분간 건조한 다음 건조된 적층체를 다시 한번 압착롤러(111)로 압착하고 롤상에 권취하는 와인더(112)를 거쳐 80℃ 내지 90℃의 온도분위기에서 10시간 내지 24시간 숙성하는 숙성실(113)에 저장된다.The coated laminate of the water-dispersed polyurethane resin on the release paper 102 and the dried laminate 107 are subjected to an application device 108 for applying the water-dispersed urethane adhesive under a drying temperature of 100 ° C. in the semi-dry chamber 109. Semi-drying the adhesive for 20 seconds, then laminated with a non-woven fabric or meriyasu such as fabric paper 110, and then compressed and dried in a semi-dry chamber (109 ') for 3 to 5 minutes at a temperature of 130 ℃ and then pressed again the dried laminate It is stored in the aging chamber 113 which is pressed for 10 hours to 24 hours at a temperature atmosphere of 80 ° C to 90 ° C through a winder 112 that is compressed by a roller 111 and wound on a roll.
숙성이 끝난 적층체(107)에서 릴리즈페이퍼(102)를 박리하면 본 발명의 인조피혁은 완성되며 박리된 릴리즈페이퍼(102)는 권취하여 재사용이 가능하다는 기술이 종래기술로 공지되어 있다.When the release paper 102 is peeled off from the matured laminate 107, the artificial leather of the present invention is completed, and the release paper 102 is known in the art that the peeled release paper 102 can be wound up and reused.
그러나 상기의 종래 제조방법은 실리콘 또는 PE코팅된 릴리즈페이퍼를 사용함으로 문양의 요철이 선명하지 못하였고, 수분산 폴리우레탄을 부직포에 함침하기 위하여는 함수율이 높아져야 하므로 인조피혁의 밀도가 낮아져 인장강도가 저하되고 내구성이 떨어진다는 문제점이 여전히 남아 있었다.     However, in the conventional manufacturing method, the irregularities of the pattern are not clear by using the release paper coated with silicon or PE, and the moisture content must be high to impregnate the water-dispersed polyurethane into the nonwoven fabric. The problem of deterioration and poor durability still remained.
따라서 본 발명은 상기한 문제점을 해결하고자 발명한 것으로, PP수지로 코팅된 릴리즈페이퍼를 사용함으로써 인조피혁의 표면문양을 보다 선명하게 형성할 수 있으며, 수분산 폴리우레탄의 밀도를 높일 수 있게 하여 인조피혁의 인장강도와 내구성을 향상할 수 있으며, 또한 인조피혁의 표면문양을 형성하는 이형지인 릴리즈페이퍼를 반복하여 사용할 수 있는 수분산 폴리우레탄을 이용하는 인조피혁을 제공하고자 하는 것이다.Therefore, the present invention has been invented to solve the above problems, by using a release paper coated with PP resin can more clearly form the surface pattern of artificial leather, it is possible to increase the density of the water-dispersed polyurethane artificial It is to provide an artificial leather using a water-dispersed polyurethane that can improve the tensile strength and durability of the leather, and can also repeatedly use the release paper which is a release paper forming the surface pattern of the artificial leather.
본발명은 수분산 폴리우레탄을 이용하는 인조피혁의 제조방법에 관한 것으로, 수분산 폴리우레탄수지로 표면에 요철문양이 형성되는 인조피혁을 제조하는 방법에 있어서, 수분산 폴리우레탄수지와 물을 중량비로 8:2가 되게 분산하는 공정; 표면에 요철문양이 음각된 릴리즈페이퍼(102)에 수분산 폴리우레탄수지를 일정한 두께로 코팅하고 드라이챔버(106)에서 건조하는 작업을 반복하는 공정; 릴리즈페이퍼에 코팅되어 건조된 적층체(107)에 수분산 우레탄접착제를 도포하여 세미드라이챔버(109)에서 건조하는 공정; 접착제가 도포되고 건조된 적층체에 직물지(110)를 합체하여 압착하고 세미드라이챔버(109')에서 건조한 후 압착롤러(111)로 재차 압착하는 공정; 직물지와 합체된 적층체를 숙성실(113)에서 일정시간 숙성한 후 릴리즈페이퍼를 박리하는 공정;을 포함하는 것을 특징으로 한다.The present invention relates to a method of manufacturing artificial leather using a water-dispersed polyurethane, in the method of manufacturing an artificial leather in which irregularities are formed on the surface of the water-dispersed polyurethane resin, the water-dispersed polyurethane resin and water in a weight ratio Dispersing to 8: 2; Coating a water-dispersed polyurethane resin with a predetermined thickness on the release paper 102 having the concavo-convex pattern engraved on the surface, and repeating the drying in the dry chamber 106; Applying a water-dispersed urethane adhesive to the laminate 107 coated on the release paper and dried, and drying the semi-dried chamber 109; Bonding the fabric paper 110 to the laminate coated with the adhesive, and then pressing the fabric paper 110 and drying the semi-dried chamber 109 ', and then compressing the fabric paper 110 again with the pressing roller 111; It characterized in that it comprises a; step of peeling the release paper after aging for a certain period of time in the aging chamber 113, the laminate integrated with the paper.
본발명은 수분산 폴리우레탄을 이용하는 인조피혁에 관한 것으로, 표면에 요철문양이 형성되는 인조피혁에 있어서, 상기 요철문양은 수분산 폴리우레탄수지와 물을 중량비로 8:2가 되게 분산한 후, 표면에 요철문양이 음각된 릴리즈페이퍼(102)에 다수 층 코팅, 건조한 후, 접착제를 사용하여 직물지(110)를 합체한 후, 릴리즈페이퍼를 박리하여 형성되는 것을 특징으로 한다.The present invention relates to an artificial leather using a water-dispersible polyurethane, in the artificial leather in which the uneven pattern is formed on the surface, the uneven pattern is dispersed in a weight ratio of 8: 2 water dispersion polyurethane resin and water, After coating and drying a plurality of layers on the release paper 102 having the concave-convex pattern on the surface, after combining the fabric paper 110 using an adhesive, it is characterized in that formed by peeling the release paper.
따라서 본 발명의 인조피혁 및 인조피혁 제조방법은 PP수지로 코팅된 릴리즈페이퍼를 사용함으로써 수분산 폴리우레탄수지로 형성되는 인조피혁의 표면에 보다 선명한 요철문양을 형성하게 할 수 있고, 수분산 폴리우레탄의 함수율을 낮출 수 있어 인조피혁의 밀도를 높임으로서 내구성 및 내마모성을 제고할 수 있으며, 릴리즈페이퍼를 손상없이 재활용할 수 있고 보다 고급스러운 인조피혁을 생산할 수 있으며, 또한 수분산 폴리우레탄수지를 사용함으로써 친환경적인 작업환경을 만들 수 있게 하는 현저한 효과가 있다.Therefore, the artificial leather and the artificial leather manufacturing method of the present invention can use the release paper coated with PP resin to form a clear concavo-convex pattern on the surface of the artificial leather formed of water-dispersed polyurethane resin, water-dispersed polyurethane It can lower the moisture content of the synthetic leather to increase the durability and wear resistance by increasing the density of the artificial leather, recycle the release paper without damage, produce more luxurious artificial leather, and also use the water-dispersed polyurethane resin There is a remarkable effect to create an environmentally friendly working environment.
도 1은 종래 표면문양 성형장치의 단면도1 is a cross-sectional view of a conventional surface pattern forming apparatus
도 2는 종래 수분산 폴리우레탄수지로 형성되는 인조피혁 표면문양 성형장치의 개략적인 단면도Figure 2 is a schematic cross-sectional view of the artificial leather surface glyph forming apparatus formed of a conventional water-dispersible polyurethane resin
도 3은 본발명의 수분산 폴리우레탄을 이용하는 인조피혁의 제조방법 공정도Figure 3 is a process chart for manufacturing artificial leather using the water-dispersed polyurethane of the present invention
<도면의 주요 부분에 대한 부호의 설명><Explanation of symbols for the main parts of the drawings>
101: 언와인더 102: 릴리즈페이퍼101: Unwinder 102: Release Paper
103: 장력조절장치 104, 104': 코팅장치103: tension control device 104, 104 ': coating device
105: 봉상롤 106, 106': 드라이챔버105: rod roll 106, 106 ': dry chamber
107: 적층체 108: 도포장치107: laminate 108: coating device
109, 109': 세미드라이챔버 110: 직물지109, 109 ': Semi-dry chamber 110: Woven paper
111: 압착롤러 112: 와인더 111: pressing roller 112: winder
113: 숙성실 113: ripening room
본발명은 수분산 폴리우레탄을 이용하는 인조피혁의 제조방법에 관한 것으로, 수분산 폴리우레탄수지로 표면에 요철문양이 형성되는 인조피혁을 제조하는 방법에 있어서, 수분산 폴리우레탄수지와 물을 중량비로 8:2가 되게 분산하는 공정; 표면에 요철문양이 음각된 릴리즈페이퍼(102)에 수분산 폴리우레탄수지를 일정한 두께로 코팅하고 드라이챔버(106)에서 건조하는 작업을 반복하는 공정; 릴리즈페이퍼에 코팅되어 건조된 적층체(107)에 수분산 우레탄접착제를 도포하여 세미드라이챔버(109)에서 건조하는 공정; 접착제가 도포되고 건조된 적층체에 직물지(110)를 합체하여 압착하고 세미드라이챔버(109')에서 건조한 후 압착롤러(111)로 재차 압착하는 공정; 직물지와 합체된 적층체를 숙성실(113)에서 일정시간 숙성한 후 릴리즈페이퍼를 박리하는 공정;을 포함하는 것을 특징으로 한다.The present invention relates to a method of manufacturing artificial leather using a water-dispersed polyurethane, in the method of manufacturing an artificial leather in which irregularities are formed on the surface of the water-dispersed polyurethane resin, the water-dispersed polyurethane resin and water in a weight ratio Dispersing to 8: 2; Coating a water-dispersed polyurethane resin with a predetermined thickness on the release paper 102 having the concavo-convex pattern engraved on the surface, and repeating the drying in the dry chamber 106; Applying a water-dispersed urethane adhesive to the laminate 107 coated on the release paper and dried, and drying the semi-dried chamber 109; Bonding the fabric paper 110 to the laminate coated with the adhesive, and then pressing the fabric paper 110 and drying the semi-dried chamber 109 ', and then compressing the fabric paper 110 again with the pressing roller 111; It characterized in that it comprises a; step of peeling the release paper after aging for a certain period of time in the aging chamber 113, the laminate integrated with the paper.
또한, 상기 표면에 요철문양이 음각된 릴리즈페이퍼(102)에 수분산 폴리우레탄수지를 코팅하고 드라이챔버(106)에서 건조하는 작업을 반복하는 공정횟수는 2 ~ 3회인 것을 특징으로 한다.     In addition, the number of steps of repeating the operation to dry the coating in the dry chamber 106 and the water-dispersed polyurethane resin on the surface of the release paper 102 indented concave-convex pattern is characterized in that 2 to 3 times.
또한, 상기 표면에 요철문양이 음각된 릴리즈페이퍼(102)에 수분산 폴리우레탄수지를 코팅하고 드라이챔버(106)에서 건조하는 작업을 반복하는 공정에서, 건조하는 작업은 130 ~ 150℃의 온도하에서 3분 내지 5분간 건조하는 것을 특징으로 한다.     In addition, in the process of repeating the operation of coating the water-dispersible polyurethane resin on the release paper 102, the concave-convex pattern is engraved on the surface and drying in the dry chamber 106, the drying operation at a temperature of 130 ~ 150 ℃ It is characterized by drying for 3 to 5 minutes.
또한, 상기 릴리즈페이퍼(102)에 수분산 폴리우레탄수지의 코팅과 건조가 끝난 적층체(107)는 수분산 우레탄접착제를 도포하는 도포장치(108)를 거쳐 세미드라이챔버(109)에서 90 ~ 110℃의 건조온도 하에서 20~ 30초 동안 접착제를 반건조한 다음, 부직포나 메리야스와 같은 직물지(110)와 적층하고 압착한 후, 세미드라이챔버(109')에서 130 ~ 150℃의 온도 하에서 3분 내지 5분 건조한 다음 건조된 적층체를 다시 한번 압착롤러(111)로 압착하고 롤상에 권취하는 와인더(112)를 거쳐 90℃ 내지 110℃의 온도에서 12시간 내지 24시간 숙성하는 숙성실(113)에 저장되는 것을 특징으로 한다.     In addition, the laminate of the water-dispersed polyurethane resin and the dried laminate 107 on the release paper 102 is 90 ~ 110 in the semi-dry chamber 109 through the coating device 108 for applying the water-dispersed urethane adhesive Semi-drying the adhesive for 20-30 seconds at a drying temperature of ℃, then laminated with a non-woven fabric or fabric paper 110, such as Maryas and pressed, and then in a semi-dry chamber (109 ') for 3 minutes to a temperature of 130 ~ 150 ℃ After drying for 5 minutes, the dried laminate is once again pressed by a pressing roller 111 and passed through a winder 112 wound on a roll to a aging chamber 113 aged at a temperature of 90 ° C to 110 ° C for 12 to 24 hours. Characterized in that it is stored.
또한, 상기 수분산 폴리우레탄수지와 물을 중량비로 8:2가 되게 분산하는 공정에서, 안료 및 수성토너를 첨가하는 것을 특징으로 한다.     In addition, in the process of dispersing the water-dispersible polyurethane resin and water in a weight ratio of 8: 2, it is characterized in that the pigment and the aqueous toner is added.
또한, 상기 직물지는 부직포 또는 메리야스인 것을 특징으로 한다.     In addition, the woven paper is characterized in that the non-woven fabric or maryas.
그리고, 상기 릴리즈페이퍼(102)는 수분산 폴리우레탄수지의 표면문양이 보다 선명하게 할 수 있도록 표면에는 폴리프로필렌(PP) 수지가 코팅되어 있는 것을 특징으로 한다.     In addition, the release paper 102 is characterized in that the surface is coated with a polypropylene (PP) resin so that the surface pattern of the water-dispersed polyurethane resin more clear.
또한, 상기 수분산 폴리우레탄수지와 물은 중량비로 8 : 2가 되게 분산하는 공정인 것을 특징으로 한다.     In addition, the water-dispersed polyurethane resin and water is characterized in that the step of dispersing to 8: 2: by weight ratio.
본발명은 수분산 폴리우레탄을 이용하는 인조피혁에 관한 것으로, 표면에 요철문양이 형성되는 인조피혁에 있어서, 상기 요철문양은 수분산 폴리우레탄수지와 물을 중량비로 8:2가 되게 분산한 후, 표면에 요철문양이 음각된 릴리즈페이퍼(102)에 다수 층 코팅, 건조한 후, 접착제를 사용하여 직물지(110)를 합체한 후, 릴리즈페이퍼를 박리하여 형성되는 것을 특징으로 한다.The present invention relates to an artificial leather using a water-dispersible polyurethane, in the artificial leather in which the uneven pattern is formed on the surface, the uneven pattern is dispersed in a weight ratio of 8: 2 water dispersion polyurethane resin and water, After coating and drying a plurality of layers on the release paper 102 having the concave-convex pattern on the surface, after combining the fabric paper 110 using an adhesive, it is characterized in that formed by peeling the release paper.
또한, 상기 릴리즈페이퍼(102)는 수분산 폴리우레탄수지의 표면문양을 보다 선명하게 형성할 수 있도록 종이 위에 폴리프로필렌(PP) 수지가 코팅된 소수성을 나타내는 불침투성 필름인 것을 특징으로 한다.     In addition, the release paper 102 is characterized in that the impermeable film exhibiting a hydrophobic coating of polypropylene (PP) resin on the paper to more clearly form the surface pattern of the water-dispersed polyurethane resin.
본발명을 첨부도면에 의해 상세히 설명하면 다음과 같다. 도 1은 종래 표면문양 성형장치의 단면도, 도 2는 종래 수분산 폴리우레탄수지로 형성되는 인조피혁 표면문양 성형장치의 개략적인 단면도, 도 3은 본발명의 수분산 폴리우레탄을 이용하는 인조피혁의 제조방법 공정도이다.     The present invention is described in detail by the accompanying drawings as follows. 1 is a cross-sectional view of a conventional surface pattern forming apparatus, Figure 2 is a schematic cross-sectional view of the artificial leather surface pattern forming apparatus formed of a conventional water-dispersible polyurethane resin, Figure 3 is a production of artificial leather using the water-dispersed polyurethane of the present invention Method flow chart.
본발명의 공정은 함수율 20%정도의 수분산 폴리우레탄용액을 문양이 형성된 이형지인 릴리즈페이퍼에 코팅하고 건조하는 공정을 반복하여 필름을 형성하고 형성된 필름에 접착제를 도포하여 부직포와 같은 직물지에 압착하여 접착하고 건조한 다음 일정기간 숙성한 후 릴리즈페이퍼를 박리하여 인조피혁을 완성한다.     The process of the present invention is to repeat the process of coating a water-dispersible polyurethane solution with a water content of about 20% on a release paper that is a patterned release paper and drying, forming a film, and then applying an adhesive to the formed film to compress a nonwoven fabric such as After bonding, drying and aging for a certain period of time, the release paper is peeled off to complete the artificial leather.
언와인더(101)에 롤상으로 권취된 릴리즈페이퍼(102)는 장력조절장치(103)를 거쳐 코팅장치(104)로 이송된다.     The release paper 102 wound on the unwinder 101 in roll form is transferred to the coating apparatus 104 via the tension adjusting device 103.
릴리즈페이퍼(102)는 인조피혁의 표면에 형성될 문양이 연속적으로 음각된 이형지로 수분산 폴리우레탄수지의 표면문양을 보다 선명하게 형성할 수 있도록 표면에는 폴리프로필렌(PP) 수지가 코팅되어 있어 소수성을 나타내는 불침투성 필름이다. 종래의 릴리즈페이퍼는 실리콘 또는 폴리에칠렌수지로 코팅되어 있어 표면에 엠보싱(요철)이 잘 형성되지 않는 단점이 있는 반면, 본발명의 폴리프로필렌(PP) 수지로 코팅된 릴리즈페이퍼는 표면에 원하는 형상의 엠보싱(요철)을 용이하게 잘 형성할 수 있는 장점이 있다.     The release paper 102 is a release paper in which the pattern to be formed on the surface of the artificial leather is engraved continuously, so that the surface pattern of the water-dispersed polyurethane resin can be more clearly formed. It is an impermeable film which shows. Conventional release paper has a disadvantage that embossing (unevenness) is not well formed on the surface is coated with silicone or polyethylene resin, while release paper coated with polypropylene (PP) resin of the present invention is embossed to the desired shape on the surface There is an advantage that can easily form (uneven).
장력조절장치(103)는 코팅장치(104)로 이송되는 릴리즈페이퍼(102)의 장력을 일정하게 유지하고 언와인더(101)에서 릴리즈페이퍼(102)가 권취된 롤을 교체할 때에도 공정을 중단함이 없이 작업할 수 있게 하는 장치로서 상·하에 구비된 다수의 봉상롤(105) 사이를 수직으로 왕복하면서 인출되게 구성하여 언와인딩되는 페이퍼의 종단부가 장력조절장치(103)를 통과하는 도중에 릴리즈페이퍼(102)의 권취롤을 교체하고 언와인딩되는 페이퍼종단부와 교체되는 페이퍼의 선단부를 연결할 수 있도록 하는 시간을 제공하는 역할을 한다.     The tension control device 103 maintains a constant tension of the release paper 102 transferred to the coating device 104 and stops the process even when replacing the roll on which the release paper 102 is wound in the unwinder 101. It is a device which enables to work without a box, and is configured to be pulled out while reciprocating vertically between a plurality of rod-shaped rolls 105 provided above and below, and the end of the unwound paper passes through the tension adjusting device 103. It serves to provide a time to replace the winding roll of the paper 102 and to connect the distal end of the paper and the paper end to be unwinded.
코팅장치(104)로 이송되는 릴리즈페이퍼(102)에는 수분산 폴리우레탄수지가 코팅된다.     The release paper 102 transferred to the coating apparatus 104 is coated with a water-dispersible polyurethane resin.
수분산 폴리우레탄수지는 물함유량이 높을 경우에는 유동성과 침투성이 우수하나 건조 후 밀도가 낮아져 인장강도나 내구성이 떨어질 뿐 아니라 릴리즈페이퍼(102)의 소수성표면과 반발력이 작용하여 균일하게 코팅하기가 어려워지며 물의 함유량이 낮을 경우에도 유동성이 저하되어 얇게 코팅하기가 어려워진다.     The water-based polyurethane resin has excellent fluidity and permeability when the water content is high, but the density after drying decreases the tensile strength and durability, as well as the hydrophobic surface and the repulsive force of the release paper 102, which makes it difficult to coat uniformly. Even when the water content is low, fluidity is lowered, making it difficult to coat thinly.
따라서 릴리즈페이퍼(102)에 직접 코팅하는 수분산 폴리우레탄의 물함유량은 수분산 폴리우레탄과 물의 중량비로 8:2 정도가 되게 하는 것이 바람직하다.      Therefore, it is preferable that the water content of the water-dispersed polyurethane coated directly on the release paper 102 is about 8: 2 by weight ratio of the water-dispersed polyurethane and water.
실시례로 수분산 폴리우레탄 80 중량부에 대하여 물 20 중량부를 혼합한다. 상기 수분산 폴리우레탄 80중량부에 대하여 물이 20중량부 미만이 되면 유동성이 저하되어 얇게 코팅하기가 어려워진다. 물이 20중량부를 초과하게 되면 건조 후 밀도가 낮아져 인장강도나 내구성이 떨어질 뿐 아니라 릴리즈페이퍼(102)의 소수성표면과 반발력이 작용하여 균일하게 코팅하기가 어려워진다. 이 과정에서 적당량의 안료 및 색상을 내기 위한 수성토너를 추가할 수 있다.      In an example, 20 parts by weight of water is mixed with 80 parts by weight of the water-dispersed polyurethane. When water is less than 20 parts by weight with respect to 80 parts by weight of the water-dispersed polyurethane, fluidity is lowered, making it difficult to coat thinly. When the water exceeds 20 parts by weight, the density is lowered after drying, not only the tensile strength or durability is lowered, but also the hydrophobic surface and the repulsive force of the release paper 102 are difficult to uniformly coat. In this process, an aqueous toner for producing an appropriate amount of pigment and color may be added.
상기 표면에 요철문양이 음각된 릴리즈페이퍼(102)에 수분산 폴리우레탄수지를 일정한 두께로 코팅하고 드라이챔버(106)에서 건조하는 작업을 반복하는 공정에서, 건조하는 작업은 130 ~ 150℃의 온도 하에서 3분 내지 5분간 건조하는 것이 적정하다.      In the process of coating a water-dispersed polyurethane resin with a predetermined thickness on the release paper 102 in which the irregularities are engraved on the surface and drying in the dry chamber 106, the drying operation is a temperature of 130 ~ 150 ℃ Drying under 3 to 5 minutes is appropriate.
온도가 130℃ 미만이면 건조가 잘되지 않고 150℃를 넘어가면 코팅층이 변질된다. 그리고 건조시간이 3분 미만이면 건조가 불충분하고 5분을 넘어가면 코팅층이 변질된다.      If the temperature is less than 130 ℃ is not dry well, if the temperature exceeds 150 ℃ the coating layer is deteriorated. If the drying time is less than 3 minutes, the drying is insufficient, and if the drying time exceeds 5 minutes, the coating layer is deteriorated.
1차 코팅되고 건조된 릴리즈페이퍼(102)는 반복하여 코팅장치(104')에서 2차로 수분산 폴리우레탄수지로 코팅되며 드라이챔버(106')에서 1차 건조와 동일한 조건으로 건조된다.The primary coated and dried release paper 102 is repeatedly coated with the water-dispersed polyurethane resin in the coating apparatus 104 'secondly and dried in the same conditions as the primary drying in the dry chamber 106'.
그러나 상기 표면에 요철문양이 음각된 릴리즈페이퍼(102)에 수분산 폴리우레탄수지를 일정한 두께로 코팅한 후, 드라이챔버에서 건조하는 작업을 한 번에 두껍게 코팅하면 건조과정이 지연되고 수분증발과정에서 불량이 발생하며, 3회를 초과하여 반복하게 되면 먼지 등 이물질이 첨가되어 코팅층이 지저분하게 되며 제조경비가 많이 들게 된다. 그러므로 2회 내지 3회가 적정하다.     However, after coating the water-dispersed polyurethane resin with a certain thickness on the surface of the release paper 102 indented in the concave-convex pattern, the drying process in the dry chamber is thickened at a time, the drying process is delayed and in the water evaporation process Defects occur, and if it is repeated more than three times, foreign substances such as dust are added to make the coating layer dirty and costly to manufacture. Therefore, 2-3 times is appropriate.
그리고 릴리즈페이퍼(102)에 수분산 폴리우레탄수지의 코팅과 건조가 끝난 적층체(107)는 수분산 우레탄접착제를 도포하는 도포장치(108)를 거쳐 세미드라이챔버(109)에서 90 ~ 110℃의 건조온도 하에서 20 ~ 30초 동안 접착제를 반건조한 다음, 부직포나 메리야스와 같은 직물지(110)와 적층하고 압착한 후, 세미드라이챔버(109')에서 130 ~ 150℃의 온도 하에서 3분 내지 5분 건조한 다음, 건조된 적층체를 다시 한번 압착롤러(111)로 압착하고 롤상에 권취하는 와인더(112)를 거쳐 90℃ 내지 110℃의 온도분위기에서 12시간 내지 24시간 숙성하는 숙성실(113)에 저장된다.     The laminated paper 107 coated with the water-dispersed polyurethane resin on the release paper 102 and dried is 107 at a temperature of 90 to 110 ° C. in the semi-dry chamber 109 through an applicator 108 for applying the water-dispersed urethane adhesive. After drying the adhesive for 20 to 30 seconds under a drying temperature, then laminated with a non-woven fabric or fabric paper 110, such as Maryas, and pressed, and then in a semi-dry chamber (109 ') for 3 to 5 minutes at a temperature of 130 ~ 150 ℃ After drying, the dried laminate is once again pressed into a pressing roller 111 and passed through a winder 112 wound on a roll to a aging chamber 113 aged for 12 to 24 hours in a temperature atmosphere of 90 ° C to 110 ° C. Stored.
세미드라이챔버(109)에서 90 ~ 110℃의 건조온도 하에서 20 ~ 30초 동안 접착제를 반건조하는 경우 온도가 90℃보다 낮게 되면 건조가 잘되지 않고 110℃를 초과하면 코팅층에 변형이 일어난다. 건조시간을 20초 보다 적게 하면 건조가 불충분하며, 30초를 초과하면, 코팅층에 변형이 일어난다.      When semi-drying the adhesive for 20 to 30 seconds in the semi-dry chamber 109 at a drying temperature of 90 ~ 110 ℃ when the temperature is lower than 90 ℃ is not dry well and exceeds 110 ℃ deformation occurs in the coating layer. If the drying time is less than 20 seconds, the drying is insufficient, and if it exceeds 30 seconds, the coating layer is deformed.
숙성실에서는 90℃ 내지 110℃의 온도분위기에서 12시간 내지 24시간 숙성하는 것으로, 온도가 90℃보다 낮게 되면 숙성이 잘되지 않고 110℃를 초과하면 코팅층에 변형이 일어난다. 건조시간을 12시간 보다 적게 하면 숙성이 불충분하며, 24시간을 초과하면, 코팅층에 변형이 일어난다.      In the aging room, the mixture is aged for 12 hours to 24 hours in a temperature atmosphere of 90 ° C to 110 ° C. When the temperature is lower than 90 ° C, aging does not occur well. If the drying time is less than 12 hours, the aging is insufficient, and if it exceeds 24 hours, the coating layer is deformed.
숙성이 끝난 적층체(107)에서 릴리즈페이퍼(102)를 박리하면 본 발명의 인조피혁은 완성되며 박리된 릴리즈페이퍼(102)는 권취하여 재사용이 가능하다.When the release paper 102 is peeled off from the matured laminate 107, the artificial leather of the present invention is completed, and the peeled release paper 102 is wound and reused.
그리고 본발명에서 사용되는 수분산 폴리우레탄을 이용하는 인조피혁의 제조장치는 종래의 제조장치와 동일한 장치를 사용하면 된다. 상기 제조장치는 도 1, 2에 종래발명에서 사용되는 장치가 동일하게 도시되어 있다.And the manufacturing apparatus of the artificial leather using the water-dispersed polyurethane used in the present invention may use the same apparatus as the conventional manufacturing apparatus. The manufacturing apparatus is the same as the apparatus used in the conventional invention in Figures 1 and 2.
따라서 본 발명의 인조피혁 제조방법은 PP수지로 코팅된 릴리즈페이퍼를 사용함으로써 수분산 폴리우레탄수지로 형성되는 인조피혁의 표면에 보다 선명한 요철문양을 형성하게 할 수 있고, 수분산 폴리우레탄의 함수율을 낮출 수 있어 인조피혁의 밀도를 높임으로서 내구성 및 내마모성을 제고할 수 있으며, 릴리즈페이퍼를 손상없이 재활용할 수 있고 보다 고급스러운 인조피혁을 생산할 수 있으며, 또한 수분산 폴리우레탄수지를 사용함으로써 친환경적인 작업환경을 만들 수 있게 하는 현저한 효과가 있다.     Therefore, the artificial leather manufacturing method of the present invention can make a clear concavo-convex pattern on the surface of the artificial leather formed of the water-dispersed polyurethane resin by using the release paper coated with PP resin, and the moisture content of the water-dispersed polyurethane It can be lowered to increase the density of artificial leather to improve durability and wear resistance, to recycle the release paper without damage, to produce more luxurious artificial leather, and to use environmentally friendly work by using a dispersion of polyurethane resin. There is a remarkable effect on the environment.

Claims (2)

  1. 수분산 폴리우레탄용액을 문양이 형성된 이형지인 릴리즈페이퍼에 코팅하고 건조하는 공정을 반복하여 필름을 형성하고, 형성된 필름에 접착제를 도포하여 직물지에 압착하여 접착하고 건조한 다음 숙성한 후, 릴리즈페이퍼를 박리하여 표면에 요철문양이 형성되는 인조피혁을 완성하는 수분산 폴리우레탄을 이용하는 인조피혁의 제조방법에 있어서,Repeat the process of coating the water-dispersed polyurethane solution on the release paper, which is a patterned release paper, and drying it to form a film, applying an adhesive to the formed film, compressing and bonding it to the fabric paper, drying and aging, and then peeling off the release paper. In the manufacturing method of artificial leather using a water-dispersed polyurethane to complete the artificial leather in which the uneven pattern is formed on the surface,
    상기 수분산 폴리우레탄수지와 물을 일정 중량비로 분산하는 공정; 표면에 요철문양이 음각된 릴리즈페이퍼(102)에 수분산 폴리우레탄수지를 일정한 두께로 코팅하고 드라이챔버(106)에서 건조하는 작업을 반복하는 공정; 릴리즈페이퍼에 코팅되어 건조된 적층체(107)에 수분산 우레탄접착제를 도포하여 세미드라이챔버(109)에서 건조하는 공정; 접착제가 도포되고 건조된 적층체에 직물지(110)를 합체하여 압착하고 세미드라이챔버(109')에서 건조한 후 압착롤러(111)로 재차 압착하는 공정; 직물지와 합체된 적층체를 숙성실(113)에서 일정시간 숙성한 후 릴리즈페이퍼를 박리하는 공정;을 포함하되, Dispersing the water-dispersed polyurethane resin and water in a predetermined weight ratio; Coating a water-dispersed polyurethane resin with a predetermined thickness on the release paper 102 having the concavo-convex pattern engraved on the surface, and repeating the drying in the dry chamber 106; Applying a water-dispersed urethane adhesive to the laminate 107 coated on the release paper and dried, and drying the semi-dried chamber 109; Bonding the fabric paper 110 to the laminate coated with the adhesive, and then pressing the fabric paper 110 and drying the semi-dried chamber 109 ', and then compressing the fabric paper 110 again with the pressing roller 111; After the step of aging the laminate combined with the woven paper in the aging room 113 for a certain time; peeling the release paper; including, but
    상기 표면에 요철문양이 음각된 릴리즈페이퍼(102)는 언와인더(101)에 롤상으로 권취된 상태에서 장력조절장치(103)를 거쳐 코팅장치(104)로 이송되며, 코팅장치(104)로 이송되는 상기 표면에 요철문양이 음각된 릴리즈페이퍼(102)에 수분산 폴리우레탄수지를 코팅하고 드라이챔버(106)에서 건조하는 작업을 반복하는 공정횟수는 2 ~ 3회이며, The release paper 102 in which the uneven pattern is engraved on the surface is transferred to the coating apparatus 104 via the tension adjusting device 103 in a state of being wound in a roll shape on the unwinder 101, and to the coating apparatus 104. The number of processes of coating the water-dispersed polyurethane resin on the release paper 102 in which the uneven pattern is engraved on the surface to be transferred and drying in the dry chamber 106 is 2 to 3 times,
    또한, 상기 표면에 요철문양이 음각된 릴리즈페이퍼(102)에 수분산 폴리우레탄수지를 코팅하고 드라이챔버(106)에서 건조하는 작업을 반복하는 공정에서, 건조하는 작업은 130 ~ 150℃의 온도하에서 3분 내지 5분간 건조하는 것이며,In addition, in the process of repeating the operation of coating the water-dispersible polyurethane resin on the release paper 102, the concave-convex pattern is engraved on the surface and drying in the dry chamber 106, the drying operation at a temperature of 130 ~ 150 ℃ Drying for 3 to 5 minutes,
    또한, 상기 릴리즈페이퍼(102)에 수분산 폴리우레탄수지의 코팅과 건조가 끝난 적층체(107)는 수분산 우레탄접착제를 도포하는 도포장치(108)를 거쳐세미드라이챔버(109)에서 90 ~ 110℃의 건조온도 하에서 20~ 30초 동안 접착제를 반건조한 다음, 부직포나 메리야스와 같은 직물지(110)와 적층하고 압착한 후, 세미드라이챔버(109')에서 130 ~ 150℃의 온도 하에서 3분 내지 5분 건조한 다음 건조된 적층체를 다시 한번 압착롤러(111)로 압착하고 롤상에 권취하는 와인더(112)를 거쳐 90℃내지 110℃의 온도에서 12시간 내지 24시간 숙성하는 숙성실(113)에 저장되는 것이며,In addition, the laminate of the water-dispersed polyurethane resin and the dried laminate 107 on the release paper 102 is 90 ~ 110 in the semi-dried chamber 109 through the coating device 108 for applying the water-dispersed urethane adhesive Semi-drying the adhesive for 20-30 seconds at a drying temperature of ℃, then laminated with a non-woven fabric or fabric paper 110, such as Maryas and pressed, and then in a semi-dry chamber (109 ') for 3 minutes to a temperature of 130 ~ 150 ℃ After drying for 5 minutes, the dried laminate is once again pressed by a pressing roller 111 and passed through a winder 112 wound on a roll to a aging chamber 113 aged at a temperature of 90 ° C. to 110 ° C. for 12 to 24 hours. Is stored,
    또한, 상기 수분산 폴리우레탄수지와 물을 일정 중량비로 분산하는 공정에서, 안료 및 수성토너를 첨가하는 것이며,In addition, in the process of dispersing the water-dispersible polyurethane resin and water in a predetermined weight ratio, it is to add a pigment and an aqueous toner,
    또한, 상기 직물지는 부직포 또는 메리야스인 것이며,In addition, the woven paper is a nonwoven fabric or maryas,
    그리고, 상기 릴리즈페이퍼(102)는 수분산 폴리우레탄수지의 표면문양이 보다 선명하게 할 수 있도록 표면에는 폴리프로필렌(PP) 수지가 코팅되어 있는 것이며,In addition, the release paper 102 is coated with a polypropylene (PP) resin on the surface so that the surface pattern of the water-dispersed polyurethane resin more clear,
    또한, 상기 수분산 폴리우레탄수지와 물은 중량비로 8 : 2가 되게 분산하는 공정인 것을 특징으로 하는 수분산 폴리우레탄을 이용하는 인조피혁의 제조방법In addition, the water-dispersed polyurethane resin and water is a process for producing artificial leather using a water-dispersed polyurethane, characterized in that the step of dispersing in a weight ratio of 8: 2:
  2. 표면에 요철문양이 형성되는 인조피혁에 있어서, 상기 요철문양은 수분산 폴리우레탄수지와 물을 중량비로 8:2가 되게 분산한 후, 표면에 요철문양이 음각된 릴리즈페이퍼(102)에 다수 층 코팅, 건조한 후, 접착제를 사용하여 직물지(110)를 합체한 후, 릴리즈페이퍼를 박리하여 형성되되,In the artificial leather in which the uneven pattern is formed on the surface, the uneven pattern is dispersed in a water-dispersed polyurethane resin and water in a weight ratio of 8: 2, and then a plurality of layers on the release paper 102 in which the uneven pattern is engraved on the surface After coating and drying, the fabric paper 110 is coalesced using an adhesive, and then formed by peeling the release paper.
    상기 릴리즈페이퍼(102)는 수분산 폴리우레탄수지의 표면문양을 보다 선명하게 형성할 수 있도록 종이 위에 폴리프로필렌(PP) 수지가 코팅된 소수성을 나타내는 불침투성 필름인 것을 특징으로 하는 수분산 폴리우레탄을 이용하는 인조피혁     The release paper 102 is a water-dispersible polyurethane, characterized in that the impermeable film exhibiting a hydrophobic coating of polypropylene (PP) resin on the paper to more clearly form the surface pattern of the water-dispersed polyurethane resin Artificial leather to use
PCT/KR2012/003761 2011-08-26 2012-05-14 Artificial leather using water-dispersible polyurethane and method for manufacturing the artificial leather WO2013032107A1 (en)

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WO2023215804A1 (en) * 2022-05-04 2023-11-09 Deckers Outdoor Corporation Footwear including bio-based materials

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KR20040055846A (en) * 2002-12-23 2004-06-30 (주)대우인터내셔널 Method for producing artificial leather with 3-dimension pattern
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WO2023215804A1 (en) * 2022-05-04 2023-11-09 Deckers Outdoor Corporation Footwear including bio-based materials

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