KR20220132833A - Waste leather and waste fiber recycking method - Google Patents

Waste leather and waste fiber recycking method Download PDF

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Publication number
KR20220132833A
KR20220132833A KR1020210037870A KR20210037870A KR20220132833A KR 20220132833 A KR20220132833 A KR 20220132833A KR 1020210037870 A KR1020210037870 A KR 1020210037870A KR 20210037870 A KR20210037870 A KR 20210037870A KR 20220132833 A KR20220132833 A KR 20220132833A
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South Korea
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waste
leather
fiber
powder
coating
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KR1020210037870A
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Korean (ko)
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박재영
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박재영
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    • CCHEMISTRY; METALLURGY
    • C14SKINS; HIDES; PELTS; LEATHER
    • C14CCHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
    • C14C11/00Surface finishing of leather
    • CCHEMISTRY; METALLURGY
    • C14SKINS; HIDES; PELTS; LEATHER
    • C14BMECHANICAL TREATMENT OR PROCESSING OF SKINS, HIDES OR LEATHER IN GENERAL; PELT-SHEARING MACHINES; INTESTINE-SPLITTING MACHINES
    • C14B7/00Special leathers and their manufacture
    • C14B7/02Composite leathers
    • C14B7/04Composite leathers by cementing or pressing together leather pieces, strips or layers, Reinforcing or stiffening leather by means of reinforcing layers
    • CCHEMISTRY; METALLURGY
    • C14SKINS; HIDES; PELTS; LEATHER
    • C14CCHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
    • C14C11/00Surface finishing of leather
    • C14C11/003Surface finishing of leather using macromolecular compounds
    • C14C11/006Surface finishing of leather using macromolecular compounds using polymeric products of isocyanates (or isothiocyanates) with compounds having active hydrogen

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Composite Materials (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)

Abstract

The present invention relates to a method in which a powder of waste leather and waste fiber is mixed with a synthetic resin solution such as polyurethane resin to form a paste, followed by processing the same by a roll coating method on the surface or both sides of leather or textile fabric to recycle the same into leather and fabrics of molded products such as carpets and a sofa processed with a coating method thicker than 2 to 5 mm.

Description

폐 가죽과 폐 섬유의 재활용법{Waste leather and waste fiber recycking method}Waste leather and waste fiber recycking method

본 발명은 폐 가죽과 폐 섬유를 재활용하기 위한 방법에 관한 것으로서 더욱 상세하게 설명하면 수 없이 많이 폐기처분되고 있는 폐가죽과 폐섬유류를 여러 가지 형태로 성형 가공하거나 가죽이나 섬유 원단에 코팅하여 효과적으로 재활용하는 방법에 관한 것이다.The present invention relates to a method for recycling waste leather and waste fibers, and if described in more detail, waste leather and waste fibers, which are being discarded in many ways, are molded and processed into various forms or coated on leather or fiber fabric for effective recycling it's about how to

원피를 탈지하는 등의 가죽을 가공하는 공정 중 일정한 두께로 만들기 위하여 절삭 가공하는 공정시 발생되는 폐 가죽과 건조된 가죽의 두께를 일정하게 가공하기 위하여 절삭하는 공정에서 발생되는 폐 가죽이나, 가죽의 표면을 연마처리(버핑)하는 공정에서 발생되는 폐 가죽 분말과 또는 가죽으로 제작한 각종 의자 시-트, 가죽가방, 의류 등, 폐기 처분되는 가죽류와 원단 제조공정 중에서 발생되는 폐 섬유 분말과 폐기되는 헌 옷 등으로 발생되는 폐 섬유류들을 분쇄하여 폴리우레탄 등의 합성수지액과 혼합하여 일정한 형태로 성형 가공하는 방법과 가죽, 밑 가죽 또는 섬유 원단에 두껍게 코팅하는 방법으로 활용하여, 폐자원을 효과적으로 재활용하므로서 국가 경제에 이바지 하려는 것이다.Waste leather generated in the process of cutting to make a constant thickness during the process of processing leather, such as degreasing the hide, and waste leather generated in the process of cutting to uniformly process the thickness of the dried leather, or Waste leather powder generated in the process of polishing (buffing) the surface, or leather products such as various chair seats, leather bags, and clothes made of leather, and waste fiber powder generated during the fabric manufacturing process By pulverizing waste fibers generated from old clothes, mixing them with a synthetic resin solution such as polyurethane, and molding them into a certain shape, and using them as a method of thick coating on leather, underlying leather or textile fabric, waste resources are effectively recycled. It is intended to contribute to the national economy.

상기와 같은 폐 가죽 중에는 이미 여러 가지 가공공정에 의하여 표면이 코팅 가공 처리되어 있고 가죽 제품도 자동차의 의자 시트와 가정용 의자 시트, 가방, 의류 등 다양한 재질과 형태로 구성되어 있으며, 가죽의 생산 공정에서 생성되는 조각 또는 분말의 폐기물도 다양한 색채와 형태로 폐기된다. 원단 생산공정에서 발생되는 폐 섬유 분말과 의류, 가방 등 생활필수품 역시 다양한 형태와 재질로 구성되어 있기 때문에 이를 재활용하기 위하여 이들 폐자재들을 미세한 분말로 분쇄 가공하여야 하는데 강도와 유연성 등의 물성이 각기 다르기 때문에 용이하게 분쇄하기 어려웠다. 이들을 분쇄하고 이 분말들을 폴리우레탄 등의 합성수지 용액과 혼합하여 일정한 형태로 성형, 건조하여 재활용하도록 하려면 용도와 물성에 따라 여러 가지의 배합 기술을 요하게 된다. 이들 가죽 분말과 섬유분말이 폴리우레탄 등의 합성수지 용액과 혼합하여 페이스트 형태로 배합해야 우수한 물성의 성형물과 코팅 원단을 만들 수 있는데 혼합 공정상 이들 분말들이 많은 양의 배합된 수지 용액을 흡수하기 때문에 원하는 물성의 성형물을 만들거나 코팅을 하기에 적합한 페이스트 형태의 배합물을 얻기 어려웠다.Among the waste leather as described above, the surface has already been coated by various processing processes, and leather products are also composed of various materials and shapes such as automobile seat seats, home chair seats, bags, and clothes, and in the leather production process, The resulting scrap or powdery waste is also disposed of in a variety of colors and forms. Since waste fiber powder generated in the fabric production process and daily necessities such as clothes and bags are also composed of various shapes and materials, these waste materials must be pulverized into fine powder to recycle them. Therefore, it was difficult to crush easily. In order to pulverize these powders, mix these powders with a synthetic resin solution such as polyurethane, mold them into a certain shape, dry them, and recycle them, various mixing techniques are required depending on the use and physical properties. These leather powders and fiber powders must be mixed with a synthetic resin solution such as polyurethane and mixed in a paste form to make molded products and coated fabrics with excellent physical properties. It was difficult to obtain a paste-type formulation suitable for making a molding with physical properties or for coating.

즉 폐가죽 분말과 폐섬유 분말을 폴리우레탄 등의 합성수지 배합액과 혼합할 때 소량의 분말을 혼합하여 부드러운 물성의 성형물이나 원단 코팅작업을 할 수 있으나 성형물이나 코팅층의 강도나 내마모성, 내굴곡성, 내열성이 우수한 물성의 성형물을 만들거나 원단 코팅층을 만들기에는 부족하여 한정된 물성 이외의 우수한 물성의 성형물과 코팅층을 형성하기에는 부족하여 우수한 물성의 용도에 사용하기 어려웠다.That is, when mixing waste leather powder and waste fiber powder with a synthetic resin mixture such as polyurethane, a small amount of powder can be mixed to coat a molded product or fabric with soft properties, but the strength, abrasion resistance, bending resistance, and heat resistance of the molded product or coating layer It was insufficient to make a molded article with excellent physical properties or to make a coating layer for fabric, and it was insufficient to form a molded article with excellent physical properties other than limited physical properties and a coating layer, so that it was difficult to use for the purpose of excellent physical properties.

폴리우레탄 등의 합성수지 배합액에 비하여 약 40% 정도 이상의 폐가죽 분말과 폐섬유 분말을 혼합하면 배합액의 수지와 분말과의 결착력이 약하여 쉽게 절곡되거나 부셔져서 원하는 물성의 성형물을 만들거나 코팅 작업을 할 수 없게 되는 어려움이 있었다. 특히 이형지에 코팅하여 박리하는 형식의 R/P 코팅방식으로는 한정된 후도 이상으로 코팅할 수 없었고 Knife 또는 Commer 코팅 등의 방식 역시 두껍게 코팅하기 어려웠다. 습식 방식에 의하여 은층을 입혀서 코팅하기도 하지만 물성이 약한 결점이 있었다.If about 40% or more of the waste leather powder and waste fiber powder are mixed compared to the synthetic resin blending solution such as polyurethane, the binding force between the resin and the powder of the blending solution is weak, so it can be easily bent or broken, making moldings with desired properties or coating work difficult. There were difficulties that could not be done. In particular, with the R/P coating method of coating and peeling the release paper, it was not possible to coat more than a limited time, and it was difficult to coat thickly with methods such as Knife or Commer coating. Although it is sometimes coated with a silver layer by a wet method, there is a drawback in that the physical properties are weak.

폐 가죽 분말과 폐 섬유 분말을 폴리우레탄 등의 합성수지 배합액과의 배합률을 높이기 위하여 혼합액을 페이스트 형태로 배합하여 높은 강도와 내마모성 등의 특성을 가진 성형물과 두껍고 견고한 코팅작업을 수행할 수 있도록 배합하는 기술에 관한 것이다.In order to increase the mixing ratio of waste leather powder and waste fiber powder with a synthetic resin blending solution such as polyurethane, the mixed solution is mixed in the form of a paste so that it can perform thick and firm coating with moldings with high strength and abrasion resistance. It's about technology.

본 발명에서는 분말 이외의 성형물 즉 가죽제품이나 의류 등의 섬유제품들을 일정하게 분쇄하기 위하여 이들을 먼저 전 처리하는 공정을 거쳐 분쇄하기 용이한 상태, 즉 쉽게 분쇄되는 하드 타입의 수지로 침적 건조하는 전처리 공정과 이들을 미세한 분말로 분쇄한 후 이들 분말과 폴리우레탄 수지 등의 합성수지 용액과 일정한 배합비율에 따라 적당량 혼합 성형하여 성형물을 만들고 이 배합액으로 코팅하기 위하여 롤 코팅(Roller coating)하기 용이한 상태의 페이스트로 배합하고 이들 성형물과 코팅한 원단을 습식 공정을 통하여 유연성과 통기성 등의 물성을 가진 성형물과 코팅 작업에 의한 원단을 제조하여 폐 가죽과 폐 섬유를 효과적으로 재활용하는 방법이다.In the present invention, in order to uniformly pulverize molded products other than powder, that is, textile products such as leather products or clothes, they are first pre-treated and then immersed and dried with a hard-type resin that is easily pulverized, that is, easily pulverized. After pulverizing them into fine powders, these powders and synthetic resin solutions such as polyurethane resins are mixed and molded in an appropriate amount according to a certain mixing ratio to make a molded product, and a paste in a state that is easy to roll-coat to coat with this mixture. It is a method of effectively recycling waste leather and waste fibers by mixing these moldings and coated fabrics with a wet process to produce molded articles with physical properties such as flexibility and breathability and a coating process.

본 발명은 분쇄가 용이한 상태로 전 처리하는 공정과 페이스트 배합 공정을 통하여 폐 가죽 분말과 폐 섬유 분말이 다량 혼합된 여러 가지 물성의 성형물과 재생 가죽 원단 및 인조 가죽 원단을 제조하여 많은 양의 폐기되는 자원을 재활용하게 되고 특히 밀도가 높은 다양한 형태의 성형물과 재생 가죽원단을 만들게 되고 또 섬유 원단에 코팅하여 내마모성과 유연성이 우수하고 통기성이 천연가죽과 동일한 정도로 우수하며 특히 2-5mm 정도의 두꺼운 코팅을 할 수 있어서 의자 시트 등 다양한 용도로 사용할 수 있는 원단을 만들게 되고 물 세탁이 가능한 인조 가죽 원단으로 재활용하게 되는 것이다.The present invention produces molded products of various physical properties in which a large amount of waste leather powder and waste fiber powder are mixed, regenerated leather fabrics and artificial leather fabrics through a pre-treatment process in an easy-to-pulverization state and a paste mixing process to produce a large amount of waste In particular, various types of high-density moldings and regenerated leather fabrics are made by recycling the used resources, and by coating it on textile fabrics, it has excellent abrasion resistance and flexibility, and the breathability is the same as that of natural leather. This will make fabrics that can be used for various purposes, such as chair seats, and will be recycled as artificial leather fabrics that can be washed in water.

본 발명은 Shavlng Scrap의 폐 가죽 분말과 폐 섬유 분말을 폴리우레탄 등의 합성수지 용액과 혼합하여 이 배합액을 소정의 성형틀에 투입하여 압착하고 습식공정에 의하여 성형, 건조하여 카?? 등의 성형물을 제조하고, Leather Trimmimg Scrap 또는 Fiber Scrap을 분쇄하여 이를 폴리우레탄 등의 합성수지액 등과 혼합하여 얻은 배합액을 가죽 또는 섬유원단의 표면 또는 양면에 코팅 가공하여 다량의 폐자재를 재활용하기 위한 방법으로서 일정한 형태로 성형하거나 코팅가공하기에 적합한 점도로 배합하기 위하여 고점도의 페이스트 상태로 혼합하여 일정한 후도로 롤 코팅(Roll Coatlng) 방식에 의하여 가죽과 섬유원단의 표면 또는 양면에 코팅하여 습식 또는 건식에 의하여 가공하는 것이다.The present invention mixes the waste leather powder and waste fiber powder of Shavlng Scrap with a synthetic resin solution such as polyurethane, puts this blending solution into a predetermined mold, presses it, and molds and dries it by a wet process. For recycling a large amount of waste materials by manufacturing moldings such as leather trimming scrap or fiber scrap and mixing it with a synthetic resin solution such as polyurethane and coating it on the surface or both sides of leather or textile fabric. As a method, in order to be molded into a certain shape or mixed with a viscosity suitable for coating processing, it is mixed in a high-viscosity paste state and coated on the surface or both sides of leather and textile fabric by a roll coating method to a certain thickness after wet or dry processing. to be processed by

[실시예][Example]

폐 가죽분말과 폐 섬유 분멀을 폴리우레탄 등의 합성수지 용액에 혼합하는 중량비의 배합예는 다음과 같다. (단위 Kg)A blending example of a weight ratio of mixing waste leather powder and waste fiber powder with a synthetic resin solution such as polyurethane is as follows. (Unit Kg)

폐 가죽 분말 10 부10 parts of lung leather powder

폐 섬유 분말 5 부5 parts of lung fiber powder

폴리우?꼽? 수지 용액 60 부Polly? 60 parts of resin solution

(고형분 얏 30%)(solid content yat 30%)

기타 증점제 및 발수제 3 부3 parts of other thickeners and water repellents

페이스트 분산제 2 부2 parts of paste dispersant

합계 80 부80 copies in total

Claims (1)

Waste leather 와 Waste Fiber를 폴리우레탄 수지 등의 합성수지액과 페이스트 상태로 배합하여 가죽 또는 섬유 원단 표면 또는 양면에 코팅하는 폐가죽과 폐원단의 재활용법.A method of recycling waste leather and waste fabric by mixing waste leather and waste fiber in a paste state with a synthetic resin solution such as polyurethane resin and coating it on the surface or both sides of leather or fiber fabric.
KR1020210037870A 2021-03-24 2021-03-24 Waste leather and waste fiber recycking method KR20220132833A (en)

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