EP3421661A1 - Artificial leather made of dope-dyed polyester fiber and method for producing same - Google Patents
Artificial leather made of dope-dyed polyester fiber and method for producing same Download PDFInfo
- Publication number
- EP3421661A1 EP3421661A1 EP17888387.2A EP17888387A EP3421661A1 EP 3421661 A1 EP3421661 A1 EP 3421661A1 EP 17888387 A EP17888387 A EP 17888387A EP 3421661 A1 EP3421661 A1 EP 3421661A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- artificial leather
- dope
- nonwoven fabric
- fiber
- sea
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 239000000835 fiber Substances 0.000 title claims abstract description 46
- 239000002649 leather substitute Substances 0.000 title claims abstract description 44
- 229920000728 polyester Polymers 0.000 title claims abstract description 24
- 238000004519 manufacturing process Methods 0.000 title abstract description 12
- 239000006229 carbon black Substances 0.000 claims abstract description 30
- 229920000642 polymer Polymers 0.000 claims abstract description 24
- 239000002131 composite material Substances 0.000 claims abstract description 20
- 229920001971 elastomer Polymers 0.000 claims abstract description 19
- 239000000806 elastomer Substances 0.000 claims abstract description 17
- 239000004745 nonwoven fabric Substances 0.000 claims description 40
- 238000004043 dyeing Methods 0.000 claims description 26
- 239000006185 dispersion Substances 0.000 claims description 25
- 238000000034 method Methods 0.000 claims description 18
- 229920001410 Microfiber Polymers 0.000 claims description 6
- 238000004080 punching Methods 0.000 claims description 5
- 229920002635 polyurethane Polymers 0.000 abstract description 10
- 239000004814 polyurethane Substances 0.000 abstract description 10
- 239000000975 dye Substances 0.000 description 42
- 230000000052 comparative effect Effects 0.000 description 29
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 12
- -1 metal complex salt Chemical class 0.000 description 11
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 9
- 238000004140 cleaning Methods 0.000 description 9
- 239000000243 solution Substances 0.000 description 9
- 239000004744 fabric Substances 0.000 description 8
- 238000011156 evaluation Methods 0.000 description 7
- 238000005470 impregnation Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- 239000004952 Polyamide Substances 0.000 description 5
- 239000003513 alkali Substances 0.000 description 5
- PYKYMHQGRFAEBM-UHFFFAOYSA-N anthraquinone Natural products CCC(=O)c1c(O)c2C(=O)C3C(C=CC=C3O)C(=O)c2cc1CC(=O)OC PYKYMHQGRFAEBM-UHFFFAOYSA-N 0.000 description 5
- 150000004056 anthraquinones Chemical class 0.000 description 5
- 229920002647 polyamide Polymers 0.000 description 5
- 239000002904 solvent Substances 0.000 description 5
- 229920000742 Cotton Polymers 0.000 description 4
- 238000011161 development Methods 0.000 description 4
- 229920000139 polyethylene terephthalate Polymers 0.000 description 4
- 239000005020 polyethylene terephthalate Substances 0.000 description 4
- 229920003225 polyurethane elastomer Polymers 0.000 description 4
- 235000011121 sodium hydroxide Nutrition 0.000 description 4
- 238000009987 spinning Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 3
- 238000009960 carding Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 239000000984 vat dye Substances 0.000 description 3
- 239000004594 Masterbatch (MB) Substances 0.000 description 2
- SMWDFEZZVXVKRB-UHFFFAOYSA-N Quinoline Chemical compound N1=CC=CC2=CC=CC=C21 SMWDFEZZVXVKRB-UHFFFAOYSA-N 0.000 description 2
- ZYGHJZDHTFUPRJ-UHFFFAOYSA-N coumarin Chemical compound C1=CC=C2OC(=O)C=CC2=C1 ZYGHJZDHTFUPRJ-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 239000005060 rubber Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- OHVLMTFVQDZYHP-UHFFFAOYSA-N 1-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)-2-[4-[2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidin-5-yl]piperazin-1-yl]ethanone Chemical compound N1N=NC=2CN(CCC=21)C(CN1CCN(CC1)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)=O OHVLMTFVQDZYHP-UHFFFAOYSA-N 0.000 description 1
- LDXJRKWFNNFDSA-UHFFFAOYSA-N 2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)-1-[4-[2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidin-5-yl]piperazin-1-yl]ethanone Chemical compound C1CN(CC2=NNN=C21)CC(=O)N3CCN(CC3)C4=CN=C(N=C4)NCC5=CC(=CC=C5)OC(F)(F)F LDXJRKWFNNFDSA-UHFFFAOYSA-N 0.000 description 1
- JQMFQLVAJGZSQS-UHFFFAOYSA-N 2-[4-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]piperazin-1-yl]-N-(2-oxo-3H-1,3-benzoxazol-6-yl)acetamide Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)N1CCN(CC1)CC(=O)NC1=CC2=C(NC(O2)=O)C=C1 JQMFQLVAJGZSQS-UHFFFAOYSA-N 0.000 description 1
- YLZOPXRUQYQQID-UHFFFAOYSA-N 3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)-1-[4-[2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidin-5-yl]piperazin-1-yl]propan-1-one Chemical compound N1N=NC=2CN(CCC=21)CCC(=O)N1CCN(CC1)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F YLZOPXRUQYQQID-UHFFFAOYSA-N 0.000 description 1
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 1
- 206010016322 Feeling abnormal Diseases 0.000 description 1
- MKYBYDHXWVHEJW-UHFFFAOYSA-N N-[1-oxo-1-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propan-2-yl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(C(C)NC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 MKYBYDHXWVHEJW-UHFFFAOYSA-N 0.000 description 1
- AFCARXCZXQIEQB-UHFFFAOYSA-N N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CCNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 AFCARXCZXQIEQB-UHFFFAOYSA-N 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 239000005708 Sodium hypochlorite Substances 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000009954 braiding Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 229960000956 coumarin Drugs 0.000 description 1
- 235000001671 coumarin Nutrition 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 150000005690 diesters Chemical class 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 239000012860 organic pigment Substances 0.000 description 1
- 229920001707 polybutylene terephthalate Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920002215 polytrimethylene terephthalate Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- JVBXVOWTABLYPX-UHFFFAOYSA-L sodium dithionite Chemical compound [Na+].[Na+].[O-]S(=O)S([O-])=O JVBXVOWTABLYPX-UHFFFAOYSA-L 0.000 description 1
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- KKEYFWRCBNTPAC-UHFFFAOYSA-L terephthalate(2-) Chemical compound [O-]C(=O)C1=CC=C(C([O-])=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-L 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
- 150000003918 triazines Chemical class 0.000 description 1
Classifications
-
- 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
- D06N3/121—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 polyesters, polycarbonates, alkyds
- D06N3/123—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 polyesters, polycarbonates, alkyds with polyesters
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/28—Formation of filaments, threads, or the like while mixing different spinning solutions or melts during the spinning operation; Spinnerette packs therefor
- D01D5/30—Conjugate filaments; Spinnerette packs therefor
- D01D5/36—Matrix structure; Spinnerette packs therefor
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/04—Pigments
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/58—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products
- D01F6/62—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyesters
-
- 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
- D06N3/0004—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 ultra-fine two-component fibres, e.g. island/sea, or ultra-fine one component fibres (< 1 denier)
-
- 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
-
- 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
- D06N3/0015—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 fibres of specified chemical or physical nature, e.g. natural silk
- D06N3/0036—Polyester fibres
-
- 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
- D06N3/0063—Inorganic compounding ingredients, e.g. metals, carbon fibres, Na2CO3, metal layers; Post-treatment with inorganic compounds
-
- 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
- D06N3/0065—Organic pigments, e.g. dyes, brighteners
-
- 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
- D06N3/007—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by mechanical or physical treatments
- D06N3/0075—Napping, teasing, raising or abrading of the resin coating
-
- 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
- D06N3/0088—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 directly applying the resin
-
- 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
- D06N2209/00—Properties of the materials
- D06N2209/08—Properties of the materials having optical properties
- D06N2209/0807—Coloured
-
- 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
- D06N2209/00—Properties of the materials
- D06N2209/10—Properties of the materials having mechanical properties
- D06N2209/105—Resistant to abrasion, scratch
Definitions
- the present invention relates to artificial leather having improved fastness and dyeing productivity by using a dope-dyed polyester sea-island type composite yarn.
- Artificial leather is prepared by impregnating a polymer elastomer in a nonwoven fabric formed by three-dimensionally interlacing ultrafine fibers, followed by napping and dyeing.
- the artificial leather has a smooth texture and unique appearance which is similar to natural leather and is widely used in various fields such as shoes, clothes, gloves, miscellaneous goods, furniture and automobile interior materials, etc.
- Korean Patent Publication No. 1996-0023482 discloses a method for producing artificial leather having excellent fastness and touch feeling.
- the dyeing fastness of artificial leather is improved by a method of impregnating a urethane resin into a nonwoven fabric made of polyamide dope-dyed ultrafine yarns and dyeing with a vat dye.
- a vat dye results in a lower light resistance than that of a dispersion dye and it is difficult to apply it to automobile interior materials due to the low weatherability of the polyamide fiber.
- Korean Patent Publication No. 2012-0021665 discloses artificial leather using a black dope-dyed sea-island type composite yarn or a black dope-dyed split type composite yarn and a method of preparing the same.
- the fastness of artificial leather is improved by using a circular knitted fabric produced by plaiting a high-shrinkage polyester with a black dope-dyed polyester ultrafine textured yarn and fabricating the textured yarn.
- polyester dope-dyed yarn is limited to produce circular knitted fabric and it exhibits inferior product quality compared to suede type artificial leather made of nonwoven fabric, there is a problem that usage is limited to high value added products such as furniture, automobile interior materials or luxury goods.
- a metal complex salt dye or a vat dye has to be used, which causes a problem that the light resistance of the artificial leather is lowered with compared to the dispersion dye.
- the present invention provides artificial leather having improved fastness and luxurious appearance quality by using a dope-dyed polyester sea-island type composite yarn and improving the manufacturing process of the dope-dyed component and the artificial leather.
- the present invention provides an artificial leather composed of dope-dyed polyester fiber, in which a black polymer elastomer is impregnated and a dispersion dye is dyed in a nonwoven fabric comprising sea-island type composite fiber of which an island component is black dope-dyed polyester.
- the present invention provides a method of preparing artificial leather composed of dope-dyed polyester fiber comprising: preparing staple fiber from sea-island type composite fiber filament composed of black dope-dyed polyester comprising 0.08 to 3.00 % by weight of a carbon black, as an island component; preparing a nonwoven fabric by needle punching with the staple fiber; Impregnating a polymer elastomer comprising 1 to 6 % by weight of a carbon black in the nonwoven fabric; forming napping by eluting a sea component of the sea-island type composite fiber from the nonwoven fabric to produce ultrafine fiber and grinding surface of the nonwoven fabric; and dyeing nonwoven fabric using a dispersion dye.
- the artificial leather is prepared by impregnating a black polyurethane elastomer into a nonwoven fabric made of a black dope-dyed polyester sea-island type composite fiber and dyeing with a dispersion dye, and therefore the light fastness and fastness to rubbing of the artificial leather is improved at medium or deep shade and luxurious quality is expressed and it can be applied to advanced applications such as automobile interior materials.
- the reduced amount of the dye in the process of manufacturing the artificial leather decreases the cost.
- the present invention relates to a method of preparing artificial leather having improved fastness properties by preparing staple fiber from sea-island type composite fiber filament; preparing staple fiber from sea-island type composite fiber; preparing a nonwoven fabric by opening, carding, crosslapping and needle punching with the staple fiber; Impregnating a polymer elastomer comprising a carbon black in the nonwoven fabric; forming ultrafine fiber by eluting alkali soluble component of the sea-island type composite fiber from the impregnated nonwoven fabric; forming napping by grinding surface of the nonwoven fabric; and dyeing nonwoven fabric using a dispersion dye.
- the step of producing the sea-island type composite fiber comprises a step of composite spinning by using a first polymer of a sea component dissolved in a solvent and eluted and a second polymer of an island component remaining unresolved in a solvent.
- the first polymer of the sea component may be a copolymerized polyester, polystyrene or polyethylene, etc. and preferably a copolymerized polyester having excellent alkali solubility.
- the second polymer of the island component may be nylon or polyester, etc. which are not dissolved in an alkali solvent but can be dyed by a dispersion dye and specific examples thereof include polyethylene terephthalate, polyoxyethylene benzoate, polybutylene terephthalate polytrimethylene terephthalate, polyamide, polyacrylic, polyvinyl alcohol, polytriethylene terephthalate, acetate and the like.
- the island component and the sea component are introduced into respective extruders and melted and extruded.
- carbon black master batch is side-fed into the island component.
- the island component and the sea component are discharged and spun through a composite spinning nozzle.
- a sea-island type filament comprising the island component, a black second polymer can be produced.
- carbon black having a better light resistance than that of organic pigment is preferable to comprise in amount of 0.08 - 3.00 % by weight in the island component of the second polymer. If the content is less than 0.08 % by weight, pale color is dyed and the color become too light color after the exposure of light in evaluation of the fastness to light and the decrease in the amount of dye used cannot be expected. When the amount exceeds 3.00 % by weight, the degree of blackness becomes too high, and thus dyeing in a specific color is not easy.
- the step of producing the nonwoven fabric according to the present invention comprises a step of forming the sea-island type filament to a staple fiber, a step of forming a web by carding and crosslapping of the staple fiber and a step of needle punching the formed web.
- the step of impregnating the polymer elastomer in the nonwoven fabric is characterized in that, in case that the polymer elastomer is dissolved in an organic solvent such as dimethylformamide (DMF) to prepare an impregnation solution, carbon black is added to be 1 to 6 % by weight of the content of carbon black in the solid content of the impregnation solution and homogenized with stirring, the viscosity is adjusted with the organic solvent after the homogenization to obtain an impregnation solution, and the nonwoven fabric is impregnated in the obtained impregnation solution.
- an organic solvent such as dimethylformamide (DMF)
- the color density of the polymer elastomer may be lower than that of the fiber in the artificial leather and if it is more than 6 % by weight, the degree of occurrence of the effect of increasing the blackness becomes slight.
- the amount of impregnation of the polymer elastomer comprising carbon black in the nonwoven fabric is preferably 20 to 40 % by weight for application to an automobile interior material. If the content is less than 20 % by weight, the specific elasticity of the polymer elastomer is difficult to develop and its ability to grasp the fibers constituting the nonwoven fabric is decreased and the appearance of the surface is deteriorated due to the occurrence of dropping on final artificial leather product and if the content exceeds 40 % by weight, soft feeling is undesirably disappeared.
- the carbon black is directly contained in the polymer elastomer so that the carbon black is prevented from coming out again in reduction cleaning and rinsing after dyeing and the carbon black is retained in the artificial leather together with the polymer elastomer, it is possible to exhibit an excellent fastness property compared with a general artificial leather production method.
- the polymer elastomer impregnated in the nonwoven fabric After immersing the nonwoven fabric in the impregnation solution, the polymer elastomer impregnated in the nonwoven fabric is solidified in the solidification bath and then washed in a cleaning bath.
- sea components of the sea-island type composite fibers are removed from the nonwoven fabric to produce a nonwoven fabric with ultrafine staple fibers.
- This process produces ultrafine staple fibers by leaving the second polymer as an island component only by eluting the first polymer as a sea component by using an alkali solvent such as caustic soda aqueous solution.
- the fineness of single yarn is 0.04 to 0.30 denier after eluting the sea component. If it exceeds 0.30 denier, soft touch specific to ultrafine fibers is not exhibited and if it is less than 0.04 denier, the dye amount to be added is large and the fastness properties may be lowered.
- the nonwoven fabric is napped.
- the napping treatment is to rub the surface of the ultrafine nonwoven fabric by means such as a sandpaper so that a large amount of hairness is formed on the surface of the nonwoven fabric.
- the dyeing process can be performed after napping.
- the dyes used in the dyeing process include azo-based dispersion dyes, heterocyclic azo-based dispersion dyes, anthraquinone-based dispersion dyes, condensed dispersion dyes, quinoline-based dispersion dyes, coumarin-based dispersion dyes, aminoketone-based dispersion dyes and diester dispersion dyes, etc.
- dyeing may be performed for 20 to 60 minutes with maintaining the temperature of the dye solution at 100 to 135 °C.
- a reduction cleaning process for removing unfixed dyes or impurities on the surface of the dyed artificial leather can be further performed.
- the reduction cleaning process may be performed at 40 to 100 °C for 10 to 30 minutes. Through the reduction cleaning process, the color of the artificial leather can be clearer.
- the reduction cleaning liquid may be sodium hydroxide or sodium hydrosulfite.
- a rinsing process using water may be further performed for cleaning.
- Polyethylene terephthalate was prepared as an island component and an alkali soluble copolymer polyester was prepared as a sea component and the island component and the sea component were introduced into respective extruders to melt and extrude the when the island component was melt and extruded, carbon black master batch was side-fed to the island component and discharged through a spinning nozzle to prepare a sea-island type filament having a carbon black of 1.5 % by weight in the island component of black polyethylene terephthalate.
- sea-island type filament was stretched, crimped so that the crimp number became 10 /inch, fixed by heating and then cut into 51 mm to prepare a sea-island type staple fiber.
- a multi-layered web was formed through the carding and the crosslapping of the sea-island type staple fiber followed by needle punching to prepare a nonwoven fabric.
- the nonwoven fabric was immersed in an impregnation solution containing polyurethane and carbon black, the polyurethane was coagulated in an aqueous solution of dimethylformamide, washed with water to prepare a black polyurethane-impregnated nonwoven fabric in which 30 % by weight of a polyurethane elastomer containing 5 % by weight of carbon black is impregnated.
- a sea component was eluted by treating the nonwoven fabric in which the black polyurethane was impregnated, with a caustic soda aqueous solution having a concentration of 5 % by weight.
- a nonwoven fabric of black polyethylene terephthalate fibers having a number of fibers divided per filament of 16 and a single yarn fineness of 0.15 denier was prepared.
- the surface of the nonwoven was ground with sandpaper having a roughness of # 150 to form the napped, and then was dyed under the following dyeing conditions.
- the dyeing residue was discharged from the dyeing machine and water was again added to the dyeing machine and then reduction cleaned under reduction cleaning condition (sodium hypochlorite: 8 g/L, sodium hydroxide 4 g/L, bath ratio 1:20) and dried to prepare an artificial leather having a deep black color.
- Example 2 were performed in the same manner as the Example 1, except that the content of carbon black in the island component of the sea-island type filament, the content of carbon black in the polyurethane, and the dye amount in dyeing were as shown in Table 1.
- Artificial leather having black or dark gray with medium shades was prepared in the Example 2 and artificial leather having pale gray was prepared in Example 3.
- the artificial leathers were prepared by performing the same manner as the Example 1, except that the content of carbon black in the island component of the sea-island type filament, the content of carbon black in the polyurethane, and the dye amount in dyeing were as shown in Table 1.
- Table 1 Content of carbon black in island component (wt%) Content of carbon black in polyurethane (wt%)
- Black dispersion Dye (% o.w.f.) Red dispersion dye (% o.w.f.) Blue dispersion dye (% o.w.f.) Yellow dispersion dye (% o.w.f.)
- Example 2 0.45 1 0 0.8 0 5 Comparative Example 4 0 1 1.45 1.06 0 7.06 Comparative Example 5 0 0 2.2 1.15 0
- Table 2 shows the colorimetric values measured using CCM for the dyed materials in the above Examples and Comparative Examples.
- Example 2 36.12 9.58 13.01 Comparative Example 4
- 36.56 9.32 13.26 0.57
- the artificial leather prepared in the above Examples and Comparative Examples was irradiated with a light quantity of 338.6 KJ/m 2 according to the method specified in the ISO 105-B06: 1998 condition 5, and the grade of fastness to light was determined using the gray scale (ISO 105 A02).
- the Fastness to rubbing was measured according to ISO 105 X12 method.
- the fastness to wet rubbing is evaluation in the same manner as the fastness to dry rubbing and the water is picked up at 98 to 100% in the white cotton cloth.
- the present invention can solve problems such as ununiform dyeing and difficulty in uniform and clear development of color with a deep shade in nonwoven artificial leather for fashion goods such as suede type furniture skin material, inner skin and outer skin of bags, It is possible to improve the cost saving and the fastness property by improving the problem of excess dye to be added for color development with medium or deep shade.
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Abstract
Description
- The present invention relates to artificial leather having improved fastness and dyeing productivity by using a dope-dyed polyester sea-island type composite yarn.
- Artificial leather is prepared by impregnating a polymer elastomer in a nonwoven fabric formed by three-dimensionally interlacing ultrafine fibers, followed by napping and dyeing. The artificial leather has a smooth texture and unique appearance which is similar to natural leather and is widely used in various fields such as shoes, clothes, gloves, miscellaneous goods, furniture and automobile interior materials, etc.
- Conventional ultrafine yarn nonwoven artificial leather has difficulty in uniform dyeing and deep shade development of ultrafine yarns and because fibers and polyurethane elastomer are dyed differently to each other due to non-dyeability of the polyurethane elastomer, two-tone or unlevel dyeing occurs, and the dyeing cost increases by introducing an excessive amount of dye for the development of deep shade, and it is difficult to realize a high quality due to a decrease in fastness.
- In order to solve the above problem, technologies using a dope-dyed fiber have been developed.
- As an example thereof, Korean Patent Publication No.
1996-0023482 - According to this document, it is described that the dyeing fastness of artificial leather is improved by a method of impregnating a urethane resin into a nonwoven fabric made of polyamide dope-dyed ultrafine yarns and dyeing with a vat dye. However, according to this method, the use of a vat dye results in a lower light resistance than that of a dispersion dye and it is difficult to apply it to automobile interior materials due to the low weatherability of the polyamide fiber.
- As another example, Korean Patent Publication No.
2012-0021665 - According to this document, it is described that the fastness of artificial leather is improved by using a circular knitted fabric produced by plaiting a high-shrinkage polyester with a black dope-dyed polyester ultrafine textured yarn and fabricating the textured yarn.
- However, according to this method, since polyester dope-dyed yarn is limited to produce circular knitted fabric and it exhibits inferior product quality compared to suede type artificial leather made of nonwoven fabric, there is a problem that usage is limited to high value added products such as furniture, automobile interior materials or luxury goods.
- In the case of using a polyamide fiber in the production of ultrafine yarn nonwoven artificial leather using a dope-dyed yarn, a metal complex salt dye or a vat dye has to be used, which causes a problem that the light resistance of the artificial leather is lowered with compared to the dispersion dye.
- In addition, in the case of using a polyamide fiber in the production of ultrafine yarn nonwoven artificial leather using a dope-dyed yarn, a warp knitted fabric or a circular knitted fabric is produced, which causes a problem that the product quality is inferior with compared to the nonwoven artificial leather.
- In order to solve the above problems, the present invention provides artificial leather having improved fastness and luxurious appearance quality by using a dope-dyed polyester sea-island type composite yarn and improving the manufacturing process of the dope-dyed component and the artificial leather.
- In order to solve the above problems, the present invention provides an artificial leather composed of dope-dyed polyester fiber, in which a black polymer elastomer is impregnated and a dispersion dye is dyed in a nonwoven fabric comprising sea-island type composite fiber of which an island component is black dope-dyed polyester.
- Also, the present invention provides a method of preparing artificial leather composed of dope-dyed polyester fiber comprising: preparing staple fiber from sea-island type composite fiber filament composed of black dope-dyed polyester comprising 0.08 to 3.00 % by weight of a carbon black, as an island component; preparing a nonwoven fabric by needle punching with the staple fiber; Impregnating a polymer elastomer comprising 1 to 6 % by weight of a carbon black in the nonwoven fabric; forming napping by eluting a sea component of the sea-island type composite fiber from the nonwoven fabric to produce ultrafine fiber and grinding surface of the nonwoven fabric; and dyeing nonwoven fabric using a dispersion dye.
- According to the present invention, the artificial leather is prepared by impregnating a black polyurethane elastomer into a nonwoven fabric made of a black dope-dyed polyester sea-island type composite fiber and dyeing with a dispersion dye, and therefore the light fastness and fastness to rubbing of the artificial leather is improved at medium or deep shade and luxurious quality is expressed and it can be applied to advanced applications such as automobile interior materials.
- In addition, the reduced amount of the dye in the process of manufacturing the artificial leather decreases the cost.
- The present invention relates to a method of preparing artificial leather having improved fastness properties by preparing staple fiber from sea-island type composite fiber filament; preparing staple fiber from sea-island type composite fiber; preparing a nonwoven fabric by opening, carding, crosslapping and needle punching with the staple fiber; Impregnating a polymer elastomer comprising a carbon black in the nonwoven fabric; forming ultrafine fiber by eluting alkali soluble component of the sea-island type composite fiber from the impregnated nonwoven fabric; forming napping by grinding surface of the nonwoven fabric; and dyeing nonwoven fabric using a dispersion dye.
- The step of producing the sea-island type composite fiber comprises a step of composite spinning by using a first polymer of a sea component dissolved in a solvent and eluted and a second polymer of an island component remaining unresolved in a solvent.
- The first polymer of the sea component may be a copolymerized polyester, polystyrene or polyethylene, etc. and preferably a copolymerized polyester having excellent alkali solubility.
- The second polymer of the island component may be nylon or polyester, etc. which are not dissolved in an alkali solvent but can be dyed by a dispersion dye and specific examples thereof include polyethylene terephthalate, polyoxyethylene benzoate, polybutylene terephthalate polytrimethylene terephthalate, polyamide, polyacrylic, polyvinyl alcohol, polytriethylene terephthalate, acetate and the like.
- In the composite spinning, the island component and the sea component are introduced into respective extruders and melted and extruded. When the island component is melted and extruded, carbon black master batch is side-fed into the island component. Thereafter, the island component and the sea component are discharged and spun through a composite spinning nozzle. Hereby, a sea-island type filament comprising the island component, a black second polymer can be produced.
- At this time, carbon black having a better light resistance than that of organic pigment is preferable to comprise in amount of 0.08 - 3.00 % by weight in the island component of the second polymer. If the content is less than 0.08 % by weight, pale color is dyed and the color become too light color after the exposure of light in evaluation of the fastness to light and the decrease in the amount of dye used cannot be expected. When the amount exceeds 3.00 % by weight, the degree of blackness becomes too high, and thus dyeing in a specific color is not easy.
- The step of producing the nonwoven fabric according to the present invention comprises a step of forming the sea-island type filament to a staple fiber, a step of forming a web by carding and crosslapping of the staple fiber and a step of needle punching the formed web.
- The step of impregnating the polymer elastomer in the nonwoven fabric is characterized in that, in case that the polymer elastomer is dissolved in an organic solvent such as dimethylformamide (DMF) to prepare an impregnation solution, carbon black is added to be 1 to 6 % by weight of the content of carbon black in the solid content of the impregnation solution and homogenized with stirring, the viscosity is adjusted with the organic solvent after the homogenization to obtain an impregnation solution, and the nonwoven fabric is impregnated in the obtained impregnation solution.
- If the content of the carbon black in the solid content of the impregnating solution is less than 1 % by weight, the color density of the polymer elastomer may be lower than that of the fiber in the artificial leather and if it is more than 6 % by weight, the degree of occurrence of the effect of increasing the blackness becomes slight.
- The amount of impregnation of the polymer elastomer comprising carbon black in the nonwoven fabric is preferably 20 to 40 % by weight for application to an automobile interior material. If the content is less than 20 % by weight, the specific elasticity of the polymer elastomer is difficult to develop and its ability to grasp the fibers constituting the nonwoven fabric is decreased and the appearance of the surface is deteriorated due to the occurrence of dropping on final artificial leather product and if the content exceeds 40 % by weight, soft feeling is undesirably disappeared.
- As described above, since the carbon black is directly contained in the polymer elastomer so that the carbon black is prevented from coming out again in reduction cleaning and rinsing after dyeing and the carbon black is retained in the artificial leather together with the polymer elastomer, it is possible to exhibit an excellent fastness property compared with a general artificial leather production method.
- After immersing the nonwoven fabric in the impregnation solution, the polymer elastomer impregnated in the nonwoven fabric is solidified in the solidification bath and then washed in a cleaning bath.
- Subsequently, the sea components of the sea-island type composite fibers are removed from the nonwoven fabric to produce a nonwoven fabric with ultrafine staple fibers.
- This process produces ultrafine staple fibers by leaving the second polymer as an island component only by eluting the first polymer as a sea component by using an alkali solvent such as caustic soda aqueous solution.
- In this case, it is preferable to be ultrafine so that the fineness of single yarn is 0.04 to 0.30 denier after eluting the sea component. If it exceeds 0.30 denier, soft touch specific to ultrafine fibers is not exhibited and if it is less than 0.04 denier, the dye amount to be added is large and the fastness properties may be lowered.
- And then, the nonwoven fabric is napped. The napping treatment is to rub the surface of the ultrafine nonwoven fabric by means such as a sandpaper so that a large amount of hairness is formed on the surface of the nonwoven fabric.
- The dyeing process can be performed after napping.
- The dyes used in the dyeing process include azo-based dispersion dyes, heterocyclic azo-based dispersion dyes, anthraquinone-based dispersion dyes, condensed dispersion dyes, quinoline-based dispersion dyes, coumarin-based dispersion dyes, aminoketone-based dispersion dyes and diester dispersion dyes, etc.
- In addition, dyeing may be performed for 20 to 60 minutes with maintaining the temperature of the dye solution at 100 to 135 °C.
- A reduction cleaning process for removing unfixed dyes or impurities on the surface of the dyed artificial leather can be further performed. The reduction cleaning process may be performed at 40 to 100 °C for 10 to 30 minutes. Through the reduction cleaning process, the color of the artificial leather can be clearer.
- The reduction cleaning liquid may be sodium hydroxide or sodium hydrosulfite.
- After the reduction cleaning step, a rinsing process using water may be further performed for cleaning.
- Hereinafter, the present invention will be described in more detail with reference to the following Examples and Comparative Examples. It should be noted, however, these embodiments of the present invention have been described for illustrative purposes, and therefore, the present invention is not limited thereto, and it will be apparent to those skilled in the art that modifications and variations could be made without departing from the scope and the spirit of the present invention as defined by the appended claims.
- Polyethylene terephthalate was prepared as an island component and an alkali soluble copolymer polyester was prepared as a sea component and the island component and the sea component were introduced into respective extruders to melt and extrude the when the island component was melt and extruded, carbon black master batch was side-fed to the island component and discharged through a spinning nozzle to prepare a sea-island type filament having a carbon black of 1.5 % by weight in the island component of black polyethylene terephthalate.
- Then, the sea-island type filament was stretched, crimped so that the crimp number became 10 /inch, fixed by heating and then cut into 51 mm to prepare a sea-island type staple fiber.
- A multi-layered web was formed through the carding and the crosslapping of the sea-island type staple fiber followed by needle punching to prepare a nonwoven fabric.
- The nonwoven fabric was immersed in an impregnation solution containing polyurethane and carbon black, the polyurethane was coagulated in an aqueous solution of dimethylformamide, washed with water to prepare a black polyurethane-impregnated nonwoven fabric in which 30 % by weight of a polyurethane elastomer containing 5 % by weight of carbon black is impregnated.
- A sea component was eluted by treating the nonwoven fabric in which the black polyurethane was impregnated, with a caustic soda aqueous solution having a concentration of 5 % by weight. By the above, a nonwoven fabric of black polyethylene terephthalate fibers having a number of fibers divided per filament of 16 and a single yarn fineness of 0.15 denier was prepared.
- The surface of the nonwoven was ground with sandpaper having a roughness of # 150 to form the napped, and then was dyed under the following dyeing conditions.
-
- A) Dye:
- Black dispersion dye (anthraquinone-based) 0.8% o.w.f. (on the weight of fiber)
- Red dispersion dye (anthraquinone-based) 0.5% o.w.f.
- Blue dispersion dye (anthraquinone-based) 1.5% o.w.f.
- Yellow dispersion dye (anthraquinone-based) 0.5% o.w.f.
- B) UV-absorber: triazine derivative 4.0% o.w.f.
- C) Dispersant: nonionic fatty acid ester 1 g / L
- D) Acid: acetic acid 1 g / L
- E) Bath ratio (additive weight: solvent weight): 1:20
- F) Dyeing temperature and time: 125 °C, 50 min
- After completion of the dyeing, the dyeing residue was discharged from the dyeing machine and water was again added to the dyeing machine and then reduction cleaned under reduction cleaning condition (sodium hypochlorite: 8 g/L, sodium hydroxide 4 g/L, bath ratio 1:20) and dried to prepare an artificial leather having a deep black color.
- These Examples were performed in the same manner as the Example 1, except that the content of carbon black in the island component of the sea-island type filament, the content of carbon black in the polyurethane, and the dye amount in dyeing were as shown in Table 1. Artificial leather having black or dark gray with medium shades was prepared in the Example 2 and artificial leather having pale gray was prepared in Example 3.
- The artificial leathers were prepared by performing the same manner as the Example 1, except that the content of carbon black in the island component of the sea-island type filament, the content of carbon black in the polyurethane, and the dye amount in dyeing were as shown in Table 1.
[Table 1] Content of carbon black in island component (wt%) Content of carbon black in polyurethane (wt%) Black dispersion Dye (% o.w.f.) Red dispersion dye (% o.w.f.) Blue dispersion dye (% o.w.f.) Yellow dispersion dye (% o.w.f.) Example 1 1.5 5 0.8 0.5 1.5 0.5 Comparative Example 1 0 5 10.55 2.49 5.17 10.51 Comparative Example 2 0 1 11.02 2.41 5.23 10.8 Comparative Example 3 0 0 11.5 2.3 5.3 11 Example 2 0.45 1 0 0.8 0 5 Comparative Example 4 0 1 1.45 1.06 0 7.06 Comparative Example 5 0 0 2.2 1.15 0 7.5 Example 3 0.1 1 0 0.1 0.12 0.12 Comparative Example 6 0 0 0 1.55 1.47 1.22 - Table 2 shows the colorimetric values measured using CCM for the dyed materials in the above Examples and Comparative Examples.
[Table 2] L a b DE Example 1 20.19 0.18 0.05 Comparative Example 1 20.66 0.04 0.24 0.53 Comparative Example 2 19.97 0.34 -0.12 0.32 Comparative Example 3 20.42 -0.18 0.12 0.43 Example 2 36.12 9.58 13.01 Comparative Example 4 36.56 9.32 13.26 0.57 Comparative Example 5 35.84 9.36 12.88 0.38 Example 3 52.14 0.73 3.6 Comparative Example 6 52.6 0.61 3.79 0.51 - From the above Tables 1 and 2, it is confirmed that the amounts of the dyes used for the same color density in Examples was smaller than that in Comparative Examples.
- Evaluation results using the following evaluation methods for the above Examples and Comparative Examples are shown in Table 3 below.
- The artificial leather prepared in the above Examples and Comparative Examples was irradiated with a light quantity of 338.6 KJ/m2 according to the method specified in the ISO 105-B06: 1998 condition 5, and the grade of fastness to light was determined using the gray scale (ISO 105 A02).
- The Fastness to rubbing was measured according to ISO 105 X12 method.
- In the evaluation of the fastness to dry rubbing, two specimens of 50 mm width and 130 mm length parallel to the longitudinal direction are fixed to the test stand of the rubbing tester and the rubbers of the test rollers are covered with white cotton cloth of 50 mm length and 50 mm length and fixed. After applying a load of 9 ± 0.2 N to the rubber, the surface of the specimen was reciprocated 10 times at a reciprocating speed of 10 times/min and the passing distance of 100 mm. The white cotton cloth was peeled off and the contamination degree of the white cotton cloth was judged according to gray scale.
- The fastness to wet rubbing is evaluation in the same manner as the fastness to dry rubbing and the water is picked up at 98 to 100% in the white cotton cloth.
- It is calculated by dividing total used amount of dye in the Comparative Example (% O.w.f.) by total used amount of dye in the Example (% o.w.f.).
- If artificial leather does not show coloration of polyurethane to exhibit dichroism, it marks as bad and if not, it marks as good.
-
[Table 3] Fastness to light (grade) Fastness to dry rubbing (grade) Fastness to wet rubbing (grade) Dye amount* (times) Surface color uniformity Example 1 4 4∼5 4 - Good Comparative Example 1 2∼3 4 3∼4 8.7 Good Comparative Example 2 2∼3 4 3∼4 8.9 Bad Comparative Example 3 2∼3 4 3∼4 9.1 Bad Example 2 3 4∼5 4 - Good Comparative Example 4 2 4 4 1.7 Good Comparative Example 5 2 4 4 2.2 Bad Example 3 4 4∼5 4∼5 - Good Comparative Example 6 3 4∼5 4∼5 12.5 Good *) The respective amount of dye used in Comparative Examples 1, 2 and 3 is a multiple of Example 1 and those in Comparative Examples 4, 5 is a multiple of Example 2, and that in Comparative Example 6 is a multiple of Example 3. - From Table 3, when both the ultrafine fibers composed of the artificial leather and the polyurethane contain carbon black (Examples 1, 2 and 3), the fastness to light, the fastness to dry rubbing and the fastness to wet rubbing thereof is confirmed to be excellent as grade 4 or higher and the surface color uniformity is also excellent.
- Further, in the case of ultrafine yarn without carbon black (Comparative Examples 1 to 6), the fastness to light was remarkably lowered, and in particular, when the carbon black was not present in either of the ultrafine yarn and the polyurethane, it can be confirmed that the used amount of dye increases for showing the same color.
- As described above, the present invention can solve problems such as ununiform dyeing and difficulty in uniform and clear development of color with a deep shade in nonwoven artificial leather for fashion goods such as suede type furniture skin material, inner skin and outer skin of bags, It is possible to improve the cost saving and the fastness property by improving the problem of excess dye to be added for color development with medium or deep shade.
Claims (5)
- An artificial leather composed of dope-dyed polyester fiber, in which a black polymer elastomer is impregnated and a dispersion dye is dyed in a nonwoven fabric comprising sea-island type composite fiber of which an island component is black dope-dyed polyester.
- The artificial leather composed of dope-dyed polyester fiber of claim 1, wherein the black dope-dyed polyester comprises 0.08 to 3.00 % by weight of a carbon black.
- The artificial leather composed of dope-dyed polyester fiber of claim 1, wherein the black polymer elastomer comprises 1 to 6 % by weight of a carbon black.
- The artificial leather composed of dope-dyed polyester fiber of claim 1, which has fastness to light of at least grade 4, fastness to dry rubbing of at least grade 4 and fastness to wet rubbing of at least grade 4 according to ISO 105-B06: 1998 method (condition 5).
- A method of preparing artificial leather composed of dope-dyed polyester fiber comprising:preparing staple fiber from sea-island type composite fiber filament composed of black dope-dyed polyester comprising 0.08 to 3.00 % by weight of a carbon black, as an island component;preparing a nonwoven fabric by needle punching with the staple fiber;Impregnating a polymer elastomer comprising 1 to 6 % by weight of a carbon black in the nonwoven fabric;forming napping by eluting a sea component of the sea-island type composite fiber from the nonwoven fabric to produce ultrafine fiber and grinding surface of the nonwoven fabric; anddyeing nonwoven fabric using a dispersion dye.
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KR960023482U (en) | 1994-12-23 | 1996-07-22 | Bush departure prevention structure | |
KR100236757B1 (en) * | 1997-10-15 | 2000-01-15 | 전원중 | Process for manufacturing micrononwoven suede that is dyed eminently |
JP3993013B2 (en) * | 2002-04-22 | 2007-10-17 | 株式会社クラレ | Leather-like sheet |
JP4233965B2 (en) * | 2002-09-30 | 2009-03-04 | 株式会社クラレ | Suede artificial leather and method for producing the same |
US7951452B2 (en) * | 2002-09-30 | 2011-05-31 | Kuraray Co., Ltd. | Suede artificial leather and production method thereof |
JP4263012B2 (en) * | 2003-04-11 | 2009-05-13 | 株式会社クラレ | Leather-like sheet having nap and method for producing the same |
JP4271553B2 (en) * | 2003-10-31 | 2009-06-03 | 株式会社クラレ | Suede-like artificial leather with good light fastness and method for producing the same |
ITMI20081055A1 (en) * | 2008-06-10 | 2009-12-11 | Alcantara Spa | MICROFIBROSO FABRIC WITH SUEDE APPEARANCE IN THE COLORS OF THE GRAY AND BLACKS RANGE WITH HIGH SOLIDITY IN THE LIGHT AND ITS METHOD OF PREPARATION |
KR101218195B1 (en) | 2010-08-12 | 2013-01-03 | 주식회사 대연 | Suede Fabric Prepared from Black Colored Composite Yarn and Process of Preparing Same |
KR102017197B1 (en) * | 2014-09-24 | 2019-09-02 | 코오롱인더스트리 주식회사 | Artificial Leather with Improved Rubbing Fastness and Method for Manufacturing The Same |
-
2016
- 2016-12-27 KR KR1020160179844A patent/KR20180075907A/en not_active Application Discontinuation
-
2017
- 2017-12-06 EP EP17888387.2A patent/EP3421661A4/en not_active Withdrawn
- 2017-12-06 JP JP2018553217A patent/JP2019511644A/en active Pending
- 2017-12-06 US US16/097,406 patent/US20190153668A1/en not_active Abandoned
- 2017-12-06 CN CN201780026239.8A patent/CN109072544B/en active Active
- 2017-12-06 WO PCT/KR2017/014186 patent/WO2018124524A1/en active Application Filing
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3660207A4 (en) * | 2017-09-25 | 2021-01-20 | Kolon Industries, Inc. | Non-woven artificial leather using dope-dyed polyester sea-island type composite yarn and method for producing same |
Also Published As
Publication number | Publication date |
---|---|
JP2019511644A (en) | 2019-04-25 |
CN109072544A (en) | 2018-12-21 |
WO2018124524A1 (en) | 2018-07-05 |
KR20180075907A (en) | 2018-07-05 |
EP3421661A4 (en) | 2019-11-06 |
CN109072544B (en) | 2021-01-29 |
US20190153668A1 (en) | 2019-05-23 |
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