KR102888383B1 - Biomass-based artificial suede manufacturing method - Google Patents
Biomass-based artificial suede manufacturing methodInfo
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- KR102888383B1 KR102888383B1 KR1020250029067A KR20250029067A KR102888383B1 KR 102888383 B1 KR102888383 B1 KR 102888383B1 KR 1020250029067 A KR1020250029067 A KR 1020250029067A KR 20250029067 A KR20250029067 A KR 20250029067A KR 102888383 B1 KR102888383 B1 KR 102888383B1
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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
- D06N3/0002—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate
- D06N3/0011—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate using non-woven fabrics
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/425—Cellulose series
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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
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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
- D06N3/0056—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the compounding ingredients of the macro-molecular coating
- D06N3/0059—Organic ingredients with special effects, e.g. oil- or water-repellent, antimicrobial, flame-resistant, magnetic, bactericidal, odour-influencing agents; perfumes
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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
- D06N3/12—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
-
- 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
- D06N2211/00—Specially adapted uses
- D06N2211/12—Decorative or sun protection articles
- D06N2211/28—Artificial leather
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Dispersion Chemistry (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
Abstract
본 발명은 대나무섬유를 비롯한 식물유래 단섬유를 사용하여 부드러운 천연 스웨이드와 유사한 고품질을 가지며 바이오매스 함량이 높아서 환경친화적인 장점을 가지는 새로운 방식의 바이오매스 기반 인조 스웨이드를 제조하는 방법에 관한 것이다.
본 발명에 따르면, 상기 식물유래 단섬유에 수용성 우레탄수지 수분산액을 분무하여 식물유래 단섬유에 수용성 우레탄수지를 코팅하는 과정; 메쉬원단 위에 수용성 우레탄수지로 코팅된 식물유래 단섬유를 수용성 우레탄수지가 건조되기 전에 카딩하여 식물유래 단섬유 웹층을 형성하는 과정; 상기 식물유래 단섬유에 코팅된 수용성 우레탄수지가 건조되기 전에 메쉬원단과 식물유래 단섬유 웹층을 니들펀칭하여 니들펀칭 부직포를 만드는 과정; 상기 니들펀칭 부직포를 수용성 또는 유성 우레탄수지액에 침지시켜서 우레탄수지액을 습식함침시키는 과정; 상기 니들펀칭 부직포를 유연처리하는 과정; 및 상기 과정에서 유연처리된 니들펀칭 부직포를 버핑처리하는 과정;을 포함하는 것을 특징으로 하는 바이오매스 기반 인조 스웨이드 제조방법이 제공된다.The present invention relates to a method for manufacturing a new type of biomass-based artificial suede using plant-derived short fibers including bamboo fibers, which has a high quality similar to that of soft natural suede and has the advantage of being environmentally friendly due to its high biomass content.
According to the present invention, a method for manufacturing biomass-based artificial suede is provided, comprising: a step of coating the plant-derived staple fibers with the water-soluble urethane resin by spraying an aqueous dispersion of a water-soluble urethane resin onto the plant-derived staple fibers; a step of forming a plant-derived staple fiber web layer by carding the plant-derived staple fibers coated with the water-soluble urethane resin on a mesh fabric before the water-soluble urethane resin dries; a step of making a needle-punched nonwoven fabric by needle-punching the mesh fabric and the plant-derived staple fiber web layer before the water-soluble urethane resin coated on the plant-derived staple fibers dries; a step of wet-impregnating the needle-punched nonwoven fabric by immersing the needle-punched nonwoven fabric in a water-soluble or oil-based urethane resin solution; a step of softening the needle-punched nonwoven fabric; and a step of buffing the softened needle-punched nonwoven fabric in the above step.
Description
본 발명은 바이오매스 기반 인조 스웨이드 제조방법으로서, 대나무섬유를 비롯한 식물유래 단섬유를 사용하여 부드러운 천연 스웨이드와 유사한 고품질을 가지는 새로운 방식의 바이오매스 기반 인조 스웨이드를 제조하는 방법에 관한 것이다. The present invention relates to a method for manufacturing a biomass-based artificial suede, and relates to a new method for manufacturing a biomass-based artificial suede having a high quality similar to that of soft natural suede, using plant-derived short fibers including bamboo fibers.
스웨이드(suede) 소재는 고급스러운 외관을 갖고 부드러운 촉감과 안락감을 주며 미끄럼방지와 같은 기능성을 갖는 등 다양한 장점을 갖는다. 이러한 스웨이드 소재는 의류를 비롯하여 가방, 신발, 자동차, 가구 등 다양한 분야에 사용되고 있다.Suede offers a luxurious appearance, a soft feel, a comfortable feel, and functional properties like anti-slip properties, offering a variety of benefits. It is used in a wide range of products, including clothing, bags, shoes, automobiles, and furniture.
동물보호적인 측면에서 천연 스웨이드를 대체할 수 있는 인조 스웨이드가 제공되고 있는데, 인조 스웨이드는 주로 기모가 형성된 폴리에스테르 원단 상에 DMF(Dimethylformamide)나 유기용제가 혼합된 유성 우레탄 수지를 함침시키고, 외관이 천연 스웨이드 가죽과 유사하도록 표면 처리하는 버핑공정 등의 추가 공정을 통해 제조되거나 나노섬유들이 3차원적으로 교락되어 있는 부직포에 우레탄수지를 함침시켜 제조되기도 한다. 그러나 이러한 인조 스웨이드는 합성섬유 소재의 부직포나 유성 우레탄수지 등을 사용하므로 사용 후에 환경오염이 유발되는 문제점을 가진다.From an animal welfare perspective, artificial suede is available as a substitute for natural suede. Artificial suede is mainly manufactured by impregnating polyester fabric with an oil-based urethane resin mixed with DMF (Dimethylformamide) or an organic solvent, and additional processes such as a buffing process to treat the surface so that the appearance is similar to natural suede leather. Or, it is manufactured by impregnating a nonwoven fabric with three-dimensionally intertwined nanofibers with a urethane resin. However, these artificial suedes have the problem of causing environmental pollution after use because they use nonwoven fabrics made of synthetic fibers or oil-based urethane resins.
한편, 대나무섬유, 황마섬유, 대마섬유, 케나프섬유, PLA섬유 등은 식물유래 바이오매스 소재로서, 생분해성으로 환경친화적인 장점을 가진다. 따라서 이러한 섬유를 사용하면 환경친화적인 인조스웨이드를 제조할 수 있으나, 이들 섬유들은 화학합성섬유처럼 섬유 굵기를 나노사이즈로 제조하기가 어려워서 통상적으로 1~10 데니아로 제조되며, 인장강도, 탄성력 등이 낮아 쉽게 부러지는 문제점을 가지므로 이들 섬유들을 사용하여서는 부드러운 특성의 인소 스웨이드를 제조하기가 곤란하다. Meanwhile, bamboo fiber, jute fiber, hemp fiber, kenaf fiber, PLA fiber, etc. are plant-derived biomass materials that have the advantage of being biodegradable and environmentally friendly. Therefore, using these fibers can produce environmentally friendly artificial suede. However, unlike chemically synthetic fibers, it is difficult to manufacture these fibers in nano-sized fiber thicknesses, so they are usually manufactured in 1-10 denier. In addition, they have low tensile strength and elasticity, making them prone to breaking, making it difficult to produce soft artificial suede using these fibers.
본 발명은 상기의 문제점을 해결하기 위한 것으로서, 본 발명의 목적은 대나무섬유를 비롯한 식물유래 단섬유를 사용하여 부드러운 천연 스웨이드와 유사한 고품질을 가지며 바이오매스 함량이 높아서 환경친화적인 장점을 가지는 새로운 방식의 바이오매스 기반 인조 스웨이드를 제조하는 방법을 제공하는 것이다.The present invention is intended to solve the above problems, and the purpose of the present invention is to provide a method for manufacturing a new type of biomass-based artificial suede using plant-derived short fibers including bamboo fibers, which has a high quality similar to soft natural suede and has the advantage of being environmentally friendly due to its high biomass content.
본 발명의 특징에 따르면, 상기 식물유래 단섬유에 수용성 우레탄수지 수분산액을 분무하여 식물유래 단섬유에 수용성 우레탄수지를 코팅하는 과정; 메쉬원단 위에 수용성 우레탄수지로 코팅된 식물유래 단섬유를 수용성 우레탄수지가 건조되기 전에 카딩하여 식물유래 단섬유 웹층을 형성하는 과정; 상기 식물유래 단섬유에 코팅된 수용성 우레탄수지가 건조되기 전에 메쉬원단과 식물유래 단섬유 웹층을 니들펀칭하여 니들펀칭 부직포를 만드는 과정; 상기 니들펀칭 부직포를 수용성 또는 유성 우레탄수지액에 침지시켜서 우레탄수지액을 습식함침시키는 과정; 상기 니들펀칭 부직포를 유연처리하는 과정; 및 상기 과정에서 유연처리된 니들펀칭 부직포를 버핑처리하는 과정;을 포함하는 것을 특징으로 하는 바이오매스 기반 인조 스웨이드 제조방법이 제공된다.According to a feature of the present invention, a method for manufacturing biomass-based artificial suede is provided, comprising: a step of coating the plant-derived staple fiber with a water-soluble urethane resin by spraying a water-soluble urethane resin dispersion onto the plant-derived staple fiber; a step of forming a plant-derived staple fiber web layer by carding the plant-derived staple fiber coated with the water-soluble urethane resin on a mesh fabric before the water-soluble urethane resin dries; a step of making a needle-punched nonwoven fabric by needle-punching the mesh fabric and the plant-derived staple fiber web layer before the water-soluble urethane resin coated on the plant-derived staple fiber dries; a step of wet-impregnating the needle-punched nonwoven fabric by immersing the needle-punched nonwoven fabric in a water-soluble or oil-based urethane resin solution; a step of softening the needle-punched nonwoven fabric; and a step of buffing the softened needle-punched nonwoven fabric in the above step.
본 발명의 다른 특징에 따르면, 상기 식물유래 단섬유는 대나무섬유이다.According to another feature of the present invention, the plant-derived short fiber is bamboo fiber.
본 발명의 또 다른 특징에 따르면, 상기 메쉬원단은 직물, 편물, 망사원단 중에서 어느 하나로 이루어진다. According to another feature of the present invention, the mesh fabric is made of any one of a woven fabric, a knitted fabric, and a mesh fabric.
본 발명의 또 다른 특징에 따르면, 상기 식물유래 단섬유에 수용성 우레탄수지를 코팅하는 과정에서는 0.05~2중량% 농도의 수용성 우레탄수지 수분산액을 식물유래 단섬유 100중량부에 대해 5~15중량부 분무하고, 상기 니들펀칭 부직포를 수용성 또는 유성 우레탄수지액에 침지시켜서 우레탄수지액을 습식함침시키는 과정에서는 상기 니들펀칭 부직포 60~95중량부에 대해 수용성 또는 유성 우레탄수지 5~40중량부를 함침시킨다. According to another feature of the present invention, in the process of coating the plant-derived short fibers with a water-soluble urethane resin, 5 to 15 parts by weight of a water-soluble urethane resin dispersion having a concentration of 0.05 to 2% by weight is sprayed per 100 parts by weight of the plant-derived short fibers, and in the process of wet-impregnating the needle-punched nonwoven fabric with the water-soluble or oil-based urethane resin solution by immersing the needle-punched nonwoven fabric in the water-soluble or oil-based urethane resin solution, 5 to 40 parts by weight of the water-soluble or oil-based urethane resin is impregnated per 60 to 95 parts by weight of the needle-punched nonwoven fabric.
이상과 같은 본 발명은 비교적 섬도가 굵고 브리틀(btittle)한 특성을 가지는 식물유래 단섬유들을 이용하여 유연하면서도 인장강도가 높은 고품질의 인조 스웨이드를 만들 수 있다. 또한, 식물유래 단섬유를 사용함으로써 바이오매스 함량이 증가되고, 따라서 환경친화적인 장점을 가진다. The present invention, as described above, utilizes plant-derived staple fibers with relatively coarse, brittle properties to produce high-quality, flexible, and high-tensile strength artificial suede. Furthermore, the use of plant-derived staple fibers increases biomass content, thus offering environmentally friendly advantages.
도 1은 본 발명에 의해 제조된 인조 스웨이드 사진Figure 1 is a photograph of artificial suede manufactured by the present invention.
이하에서 본 발명을 좀 더 구체적으로 설명한다. The present invention is described in more detail below.
본 발명은 바이오매스 기반 인조스웨이드를 제조하는 방법에 관한 것으로서, 다음과 같은 과정으로 이루어진다.The present invention relates to a method for manufacturing biomass-based artificial suede, comprising the following steps.
(1) 식물유래 단섬유를 준비하는 과정(1) Process of preparing plant-derived short fibers
섬도가 1-15데니아인 대나무섬유, 황마섬유, 대마섬유, 닥섬유, 바나나줄기 섬유, PLA섬유 등의 식물유래 섬유를 3~6mm 정도의 길이로 절단하여 식물유래 단섬유를 준비한다. Plant-derived staple fibers such as bamboo fiber, jute fiber, hemp fiber, mulberry fiber, banana stem fiber, and PLA fiber with a fineness of 1-15 denier are cut into lengths of 3-6 mm.
(2) 식물유래 단섬유를 코팅하는 과정 (2) Process of coating plant-derived short fibers
상기 과정에서 준비한 식물유래 단섬유에 수용성 우레탄수지 수분산액을 분무하여 식물유래 단섬유에 수용성 우레탄수지를 코팅시킨다. 식물유래 단섬유에 수용성 우레탄수지가 코팅되면 식물유래 단섬유의 인장강도, 탄성 등이 향상된다. A water-soluble urethane resin dispersion is sprayed onto the plant-derived staple fibers prepared in the above process to coat them with the water-soluble urethane resin. Coating the plant-derived staple fibers with the water-soluble urethane resin improves their tensile strength, elasticity, and other properties.
수용성 우레탄수지 수분산액의 농도가 과도하게 높으면 식물유래 단섬유에 수용성 우레탄수지를 얇고 고르게 코팅하기 곤란하고, 수용성 우레탄수지가 과도하게 많이 코팅되면 끈적임으로 인해 후술하는 과정에서 균일한 카딩 및 니들펀칭이 곤란해져서 균일한 니들펀칭 부직포의 생산이 곤란해진다. 이러한 점들과 식물유래 단섬유의 인장강도, 탄성 등의 향상을 고려할 때 0.05~2중량% 농도의 수용성 우레탄수지 수분산액을 식물유래 단섬유 100중량부에 대해 5~15중량부 분무하여 코팅시킨다. If the concentration of the water-soluble urethane resin dispersion is excessively high, it is difficult to coat the plant-derived staple fibers with the water-soluble urethane resin thinly and evenly, and if an excessive amount of water-soluble urethane resin is coated, the stickiness makes it difficult to perform uniform carding and needle punching in the process described later, making it difficult to produce a uniform needle-punched nonwoven fabric. Considering these points and the improvement of the tensile strength, elasticity, etc. of the plant-derived staple fibers, 5 to 15 parts by weight of the water-soluble urethane resin dispersion having a concentration of 0.05 to 2% by weight is sprayed on 100 parts by weight of the plant-derived staple fibers to coat them.
이와 같이 하면 식물유래 단섬유에 수용성 우레탄수지가 얇은 피막으로 코팅되어 식물유래 단섬유의 인장강도, 탄성 등이 향상된다. 특히, 본 과정에서 수용성 우레탄수지를 사용함으로써 용매로 물을 사용하기 때문에 작업환경이 개선되고, 니들펀칭기의 니들이 유기용제에 의해 손상되는 것이 방지된다. This process coats the plant-derived staple fibers with a thin film of water-soluble urethane resin, thereby improving their tensile strength and elasticity. In particular, the use of water-soluble urethane resin in this process improves the working environment by using water as a solvent, and prevents damage to the needle punching machine needles caused by organic solvents.
(3) 메쉬원단을 준비하는 과정(3) Process of preparing mesh fabric
메쉬원단으로 직물, 편물, 망사원단 등을 준비한다. 메쉬원단의 재질은 특별히 한정되지 않으며, PET, PP, PA(폴리아미드) 등 다양한 재질의 원단이 사용된다. 바람직하게는 평량 30~100g/m2인 원단을 준비한다.Prepare mesh fabrics such as woven fabrics, knitted fabrics, and mesh fabrics. The material of the mesh fabric is not particularly limited, and various materials such as PET, PP, and PA (polyamide) can be used. Preferably, prepare fabrics with a basis weight of 30-100 g/ m2 .
(4) 식물유래 단섬유를 카딩하는 과정(4) Process of carding plant-derived short fibers
메쉬원단 위에 수용성 우레탄수지로 코팅된 식물유래 단섬유를 1종 또는 2종 이상 혼합하고 수용성 우레탄수지가 건조되기 전에 카딩기로 카딩하여 메쉬원단 위에 식물유래 단섬유의 웹층을 형성한다. One or more types of plant-derived staple fibers coated with a water-soluble urethane resin are mixed on a mesh fabric, and carding is performed with a carding machine before the water-soluble urethane resin dries to form a web layer of plant-derived staple fibers on the mesh fabric.
(5) 식물유래 단섬유 웹층과 메쉬원단을 접합하는 과정(5) Process of bonding plant-derived single fiber web layer and mesh fabric
메쉬원단과 식물유래 단섬유 웹층을 니들펀칭하여 접합시켜서, 니들펀칭 부직포를 만드는데, 이 과정 역시 식물유래 단섬유에 코팅된 수용성 우레탄수지가 건조되기 전에 행한다. 식물유래 단섬유에 코팅된 수용성 우레탄수지가 건조되면 단섬유들이 딱딱해져서 니들펀칭 부직포의 생산이 어려워지므로 수용성 우레탄수지가 건조되기 전에 본 과정을 수행한다.Needle-punched nonwoven fabrics are made by needle-punching mesh fabrics and plant-derived staple fiber web layers to bond them together. This process is also performed before the water-soluble urethane resin coated on the plant-derived staple fibers dries. Since the water-soluble urethane resin coated on the plant-derived staple fibers hardens when dried, making the production of needle-punched nonwoven fabrics difficult, this process is performed before the water-soluble urethane resin dries.
식물유래 단섬유에 수용성 우레탄수지 수분산액이 분무되어 식물유래 단섬유 웹층의 벌키함이 감소되므로 니들펀칭이 용이해지는 장점을 가진다. The water-soluble urethane resin dispersion is sprayed onto the plant-derived short fibers, which reduces the bulkiness of the plant-derived short fiber web layer, thus making needle punching easier.
통상적으로 니들펀칭 부직포 제조시 니들펀칭 후에 부직포를 압착롤로 압착하여 니들펀칭 부직포의 균일성을 향상시키는데, 식물유래 단섬유에 수용성 우레탄수지 수분산액이 분무된 상태로서 벌키함이 감소되므로 압착롤로 압착 후 부직포의 균일성도 향상된다.Normally, when manufacturing needle-punched nonwoven fabrics, the nonwoven fabric is pressed with a press roll after needle-punching to improve the uniformity of the needle-punched nonwoven fabric. However, since the water-soluble urethane resin dispersion is sprayed on plant-derived short fibers, bulkiness is reduced, and the uniformity of the nonwoven fabric after pressing with a press roll is also improved.
경우에 따라서는 이와 같이 메쉬원단 일측에 식물유래 단섬유 웹층을 형성하여 니들펀칭 한 다음, 메쉬원단의 타측에 식물유래 단섬유 웹층을 추가로 형성하여 니들펀칭함으로써, 메쉬원단이 중앙에 위치되는 니들펀칭 부직포를 만들 수도 있다. In some cases, a needle-punched nonwoven fabric can be made by forming a plant-derived short fiber web layer on one side of a mesh fabric and needle-punching it, and then additionally forming a plant-derived short fiber web layer on the other side of the mesh fabric and needle-punching it, thereby positioning the mesh fabric in the center.
(6) 니들펀칭 부직포에 우레탄수지를 습식함침시키는 과정(6) Process of wet impregnating needle-punched nonwoven fabric with urethane resin
상기 과정에서 형성된 니들펀칭 부직포에 수용성 또는 유성 우레탄수지를 함침시키는데, 수용성 또는 유성 우레탄수지액에 니들펀칭 부직포를 침지시켜서 우레탄수지액을 습식함침시킨다. 우레탄수지가 과도하게 많이 함침되면 인조 스웨이드가 마치 고무와 같은 질감을 가지기게 되고, 우레탄수지가 과도하게 적게 함침되면 인조 스웨이드가 소요되는 수준의 유연성 및 탄성을 가지지 못한다. 따라서 이러한 점들을 고려하여 우레탄수지의 함침정도를 조절하는데, 니들펀칭 부직포 60~95중량부에 우레탄수지 5~40중량부, 특히 바람직하게는 우레탄수지 25~30중량부 함침되도록 하는 것이 바람직하다. The needle-punched nonwoven fabric formed in the above process is impregnated with a water-soluble or oil-based urethane resin. The needle-punched nonwoven fabric is immersed in a water-soluble or oil-based urethane resin solution to wet-impregnate the urethane resin solution. If the urethane resin is impregnated excessively, the artificial suede will have a rubber-like texture, and if the urethane resin is impregnated excessively, the artificial suede will not have the required level of flexibility and elasticity. Therefore, considering these points, the degree of impregnation with the urethane resin is adjusted, and it is preferable that 60 to 95 parts by weight of the needle-punched nonwoven fabric be impregnated with 5 to 40 parts by weight of the urethane resin, and particularly preferably 25 to 30 parts by weight of the urethane resin.
니들펀칭 부직포를 우레탄수지액에 침지시켜서 우레탄수지액을 함침시킨 후 스퀴징 롤러 등으로 가압하여 우레탄수지액이 니들펀칭 부직포에 원하는 량으로 고르게 함침되도록 하고, 응고시켜서, 수세 및 건조시킨다. The needle-punched nonwoven fabric is immersed in a urethane resin solution, impregnated with the urethane resin solution, and then pressurized with a squeegee roller or the like so that the urethane resin solution is evenly impregnated into the needle-punched nonwoven fabric in the desired amount, coagulated, washed, and dried.
본 과정은 니들펀칭 부직포를 이루는 식물유래 단섬유 웹층과 메쉬원단의 공극을 메워서 인조 스웨이드가 치밀한 구조를 가지며, 우레탄수지 특유의 유연한 탄성이 부여되어 천연스웨이드와 같은 부드러운 인조 스웨이드를 제조할 수 있다. 필요에 따라서는 우레탄수지용액에 염료, 안료, 난연제 등을 추가로 첨가하거나 소정 온도에서 발포되는 마이크로 캡슐 발포제를 첨가하여 습식함침처리할 수도 있다. This process fills the gaps between the plant-derived staple fiber web layer and mesh fabric that make up the needle-punched nonwoven fabric, creating a densely structured faux suede. The flexible elasticity characteristic of urethane resin is imparted, allowing the creation of faux suede that is as soft as natural suede. Optionally, dyes, pigments, flame retardants, and the like can be added to the urethane resin solution, or a microcapsule foaming agent that foams at a specific temperature can be added for wet impregnation.
(7) 유연처리 및 버핑하는 과정 (7) Process of softening and buffing
천연 스웨이드와 같은 유연한 감촉을 주기 위해 유연제를 이용하여 공지된 방법으로 유연처리한다. 이어서 니들펀칭 부직포의 일면 또는 양면을 공지된 방법으로 버핑하여 인조 스웨이드를 완성한다. 도 1은 본 발명에 의해 제조된 인조 스웨이드의 사진이다. To impart a supple feel similar to natural suede, the fabric is softened using a softener using a known method. Next, one or both sides of the needle-punched nonwoven fabric are buffed using a known method to complete the artificial suede. Figure 1 is a photograph of the artificial suede manufactured according to the present invention.
필요에 따라서는 버핑 후 인조 스웨이드의 일면을 RP처리 또는 롤엠보처리하여 RP가죽 또는 롤엠보타입 가죽을 만들 수도 있다. If necessary, one side of the artificial suede can be RP treated or roll embossed after buffing to create RP leather or roll embossed leather.
이상과 같은 구성을 가지는 본 발명은 비교적 섬도가 굵고 브리틀(btittle)한 특성을 가지는 식물유래 단섬유들을 이용하여 유연하면서도 인장강도가 높은 고품질의 인조 스웨이드를 만들 수 있다. 또한, 식물유래 단섬유를 사용함으로써 바이오매스 함량이 증가되고, 따라서 환경친화적인 장점을 가진다. The present invention, with its composition described above, utilizes plant-derived staple fibers with relatively coarse, brittle properties to produce high-quality, flexible, and high-tensile strength artificial suede. Furthermore, the use of plant-derived staple fibers increases biomass content, thus offering environmentally friendly advantages.
비교예 1Comparative Example 1
섬도 2데니아, 길이 5mm인 대나무 단섬유를 사용하여 평량 400g/m2인 니들펀칭 부직포를 만들었다. It uses bamboo single fibers with a 2 denier density and a length of 5 mm, and has a weight of 400 g/ m2 . We made needle-punched nonwoven fabric.
비교예 2Comparative Example 2
섬도 2데니아, 길이 5mm인 대나무 단섬유에 2중량% 농도의 수용성 우레탄수지 수분산액을 대나무 단섬유 100중량부에 대해 5중량부 분무하여 대나무 단섬유에 수용성 우레탄수지를 코팅하였다. 이어서 수용성 우레탄수지가 마르기 전에 대나무 단섬유를 카딩하여 대나무 단섬유의 웹층을 형성한 다음, 니들펀칭하여 평량 400g/m2인 니들펀칭 부직포를 만들었다.A water-soluble urethane resin dispersion of 2 wt% concentration was sprayed on 5 wt parts of bamboo staple fibers with a diameter of 2 denier and a length of 5 mm, and the water-soluble urethane resin was coated on the bamboo staple fibers. Then, before the water-soluble urethane resin dried, the bamboo staple fibers were carded to form a web layer of bamboo staple fibers, and then needle-punched to form a web layer of bamboo staple fibers with a basis weight of 400 g/ m2 . We made needle-punched nonwoven fabric.
비교예 3Comparative Example 3
섬도 2데니아, 길이 5mm인 대나무 단섬유에 2중량% 농도의 수용성 우레탄수지 수분산액을 대나무 단섬유 100중량부에 대해 5중량부 분무하여 대나무 단섬유에 수용성 우레탄수지를 코팅하였다. 이어서 수용성 우레탄수지가 마르기 전에 평량 30g/m2인 PET 메시망 위에 대나무 단섬유를 카딩하여 대나무 단섬유의 웹층을 형성한 다음, 니들펀칭하여 평량 400g/m2인 니들펀칭 부직포를 만들고 수용성 우레탄수지를 건조시켰다. A water-soluble urethane resin dispersion having a concentration of 2 wt% was sprayed on 5 parts by weight of bamboo staple fibers with a length of 5 mm and a fineness of 2 denier, and 100 parts by weight of bamboo staple fibers were coated with the water-soluble urethane resin. Then, before the water-soluble urethane resin dried, the bamboo staple fibers were carded on a PET mesh net having a basis weight of 30 g/m 2 to form a web layer of bamboo staple fibers, and then needle-punched to form a web layer of bamboo staple fibers having a basis weight of 400 g/m 2 . Needle-punched nonwoven fabric was made and water-soluble urethane resin was dried.
비교예 4Comparative Example 4
비교예 1의 부직포를 수용성 우레탄수지액에 습식함침하여 부직포 90중량부에 수용성 우레탄수지 10중량부를 함침시킨 다음 건조시켰다. The nonwoven fabric of Comparative Example 1 was wet-impregnated with a water-soluble urethane resin solution, and 90 parts by weight of the nonwoven fabric was impregnated with 10 parts by weight of the water-soluble urethane resin, and then dried.
비교예 5Comparative Example 5
비교예 2의 부직포를 수용성 우레탄수지액에 습식함침하여 부직포 90중량부에 수용성 우레탄수지 10중량부를 함침시킨 다음 건조시켰다. The nonwoven fabric of Comparative Example 2 was wet-impregnated with a water-soluble urethane resin solution, and 90 parts by weight of the nonwoven fabric was impregnated with 10 parts by weight of the water-soluble urethane resin, and then dried.
제조예 1Manufacturing Example 1
비교예 3의 부직포를 수용성 우레탄수지액에 습식함침하여 부직포 90중량부에 수용성 우레탄수지 10중량부를 함침시킨 다음 건조시켰다. The nonwoven fabric of Comparative Example 3 was wet-impregnated with a water-soluble urethane resin solution, and 90 parts by weight of the nonwoven fabric was impregnated with 10 parts by weight of the water-soluble urethane resin, and then dried.
<인장강도 테스트>Tensile strength test
비교예 1, 2 및 제조예 1의 부직포의 인장강도를 테스트하였으며(시험 방법 : Ms 321-17 4.4), 그 결과는 표 1과 같다. The tensile strength of the nonwoven fabrics of Comparative Examples 1 and 2 and Manufacturing Example 1 was tested (Test method: Ms 321-17 4.4), and the results are shown in Table 1.
표 1을 통해 확인할 수 있는 바와 같이, 대나무 단섬유에 수용성 우레탄 수지를 코팅한 비교예 2 및 3이 비교예 1에 비해 인장강도가 우수하였으며, 비교예 1, 2, 3에 비해 비교예4, 5가 인장강도가 더 우수하였으며, 특히, 제조예 1이 비교예들에 비해 인장강도가 가장 우수하였다. 그리고 비교예 1은 부직포 제조시 대나무 단섬유가 부러지는 문제로 인해 부직포 생산에 어려움이 발생하였다. As can be seen in Table 1, Comparative Examples 2 and 3, in which bamboo short fibers were coated with water-soluble urethane resin, had superior tensile strength compared to Comparative Example 1, and Comparative Examples 4 and 5 had superior tensile strength compared to Comparative Examples 1, 2, and 3. In particular, Manufacturing Example 1 had the best tensile strength compared to the Comparative Examples. In addition, Comparative Example 1 had difficulty in producing nonwoven fabric due to the problem of bamboo short fibers breaking during nonwoven fabric production.
Claims (4)
상기 식물유래 단섬유에 수용성 우레탄수지 수분산액을 분무하여 식물유래 단섬유에 수용성 우레탄수지를 코팅하는 과정;
메쉬원단 위에 수용성 우레탄수지로 코팅된 식물유래 단섬유를 수용성 우레탄수지가 건조되기 전에 카딩하여 식물유래 단섬유 웹층을 형성하는 과정;
상기 식물유래 단섬유에 코팅된 수용성 우레탄수지가 건조되기 전에 메쉬원단과 식물유래 단섬유 웹층을 니들펀칭하여 니들펀칭 부직포를 만드는 과정;
상기 니들펀칭 부직포를 수용성 또는 유성 우레탄수지액에 침지시켜서 우레탄수지액을 습식함침시키는 과정;
상기 니들펀칭 부직포를 유연처리하는 과정; 및
상기 과정에서 유연처리된 니들펀칭 부직포를 버핑처리하는 과정;을 포함하며,
상기 식물유래 단섬유에 수용성 우레탄수지를 코팅하는 과정에서는 0.05~2중량% 농도의 수용성 우레탄수지 수분산액을 식물유래 단섬유 100중량부에 대해 5~15중량부 분무하고,
상기 니들펀칭 부직포를 수용성 또는 유성 우레탄수지액에 침지시켜서 우레탄수지액을 습식함침시키는 과정에서는 상기 니들펀칭 부직포 60~95중량부에 대해 수용성 또는 유성 우레탄수지 5~40중량부를 함침시키는 것을 특징으로 하는 바이오매스 기반 인조 스웨이드 제조방법.
Process of preparing plant-derived short fibers;
A process of coating plant-derived short fibers with water-soluble urethane resin by spraying a water-soluble urethane resin dispersion onto the plant-derived short fibers;
A process of forming a plant-derived staple fiber web layer by carding plant-derived staple fibers coated with water-soluble urethane resin on a mesh fabric before the water-soluble urethane resin dries;
A process of making a needle-punched nonwoven fabric by needle-punching a mesh fabric and a plant-derived short fiber web layer before the water-soluble urethane resin coated on the plant-derived short fiber is dried;
A process of wet impregnating the above needle-punched nonwoven fabric with a water-soluble or oil-based urethane resin solution by immersing it in the water-soluble or oil-based urethane resin solution;
A process for making the above needle-punched nonwoven fabric flexible; and
Including a process of buffing the needle-punched nonwoven fabric that has been subjected to flexibility treatment in the above process;
In the process of coating the plant-derived short fibers with water-soluble urethane resin, 5 to 15 parts by weight of a water-soluble urethane resin dispersion having a concentration of 0.05 to 2% by weight is sprayed per 100 parts by weight of plant-derived short fibers.
A method for manufacturing biomass-based artificial suede, characterized in that in the process of wet impregnating the needle-punched nonwoven fabric with a water-soluble or oil-based urethane resin solution by immersing the needle-punched nonwoven fabric in a water-soluble or oil-based urethane resin solution, 5 to 40 parts by weight of the water-soluble or oil-based urethane resin is impregnated with 60 to 95 parts by weight of the needle-punched nonwoven fabric.
상기 식물유래 단섬유는 대나무섬유인 것을 특징으로 하는 바이오매스 기반 인조 스웨이드 제조방법.
In the first paragraph,
A method for manufacturing biomass-based artificial suede, characterized in that the plant-derived short fiber is bamboo fiber.
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