WO2015001732A1 - Cuir synthétique pour automobile - Google Patents

Cuir synthétique pour automobile Download PDF

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Publication number
WO2015001732A1
WO2015001732A1 PCT/JP2014/003197 JP2014003197W WO2015001732A1 WO 2015001732 A1 WO2015001732 A1 WO 2015001732A1 JP 2014003197 W JP2014003197 W JP 2014003197W WO 2015001732 A1 WO2015001732 A1 WO 2015001732A1
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WO
WIPO (PCT)
Prior art keywords
synthetic leather
polyurethane resin
protective layer
base material
thickness
Prior art date
Application number
PCT/JP2014/003197
Other languages
English (en)
Japanese (ja)
Inventor
金子　幸人
朗 斉田
知行 上村
Original Assignee
セーレン株式会社
本田技研工業株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by セーレン株式会社, 本田技研工業株式会社 filed Critical セーレン株式会社
Priority to BR112015032666-8A priority Critical patent/BR112015032666B1/pt
Priority to CN201480038632.5A priority patent/CN105377626B/zh
Priority to JP2015525027A priority patent/JP6353833B2/ja
Priority to MX2015016993A priority patent/MX368105B/es
Publication of WO2015001732A1 publication Critical patent/WO2015001732A1/fr

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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
    • D06N3/145—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 two or more layers of polyurethanes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/40—Layered products comprising a layer of synthetic resin comprising polyurethanes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/026—Knitted fabric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/58—Seat coverings
    • B60N2/5891—Seat coverings characterised by the manufacturing process; manufacturing seat coverings not otherwise provided for
    • 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
    • D06N3/0009—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 knitted fabrics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/554—Wear resistance
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/718—Weight, e.g. weight per square meter
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2605/00—Vehicles
    • 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
    • D06N2211/26—Vehicles, transportation
    • D06N2211/263—Cars

Definitions

  • the present invention relates to a synthetic leather for automobiles. More specifically, the present invention relates to a synthetic leather that has good luster when used in a vehicle seat and has excellent durability suitable for automobile interior use, in particular, excellent wear resistance and flex resistance.
  • synthetic leather used as an automobile interior material is composed of a resin layer and a fibrous base material.
  • a nonwoven fabric and a woven fabric are preferably used because of excellent processability and dimensional stability.
  • nonwoven fabrics and woven fabrics are inferior in stretchability while being excellent in dimensional stability. Therefore, when it is used for a product having a complicated three-dimensional shape, there is a problem that followability to the shape is poor, wrinkles are generated when the product is stuck, and the finish is inferior.
  • synthetic leather using a weft knitted fabric is disclosed as a fibrous base material.
  • Patent Document 1 a weft knitted fabric having a double-sided knitted structure is used as a fiber base material, and the surface of the fiber base material is made of a silicone-modified non-yellowing polycarbonate polyurethane resin via a polyurethane resin adhesive layer.
  • a synthetic leather formed by laminating a polyurethane resin skin layer is disclosed.
  • Patent Document 1 it is described that, in addition to various properties such as light resistance, hydrolysis resistance, heat deterioration resistance, wear resistance, and oleic acid resistance, this is excellent in molding processability and formability.
  • Patent Document 2 in a synthetic leather in which a urethane-based adhesive layer and a polyurethane skin layer are sequentially laminated on a surface of a base fabric, the base fabric is a knitted fabric having a raised surface, and the length of the raised fiber is 20 to 99. Synthetic leather is disclosed in which% is present in the adhesive layer.
  • the knitted fabric is a knitted fabric in which a spun yarn is passed as a weft yarn in the course direction and subjected to special knitting, and the longitudinal and lateral elongation rates of the base fabric are 60 to 100%.
  • Patent Document 2 it is described that it is difficult to fray and excellent in durability, tear strength, texture, and workability along the design.
  • Patent Document 3 discloses a synthetic leather in which a polyurethane adhesive layer and a polyurethane skin layer are sequentially laminated on the raised surface side of a raised circular knitted fabric.
  • the ground yarn and the raised yarn are made of a polyester multifilament yarn, and the ratio of the supplied yarn length of the ground yarn to the raised yarn is 1: 1.1 to 1: 1.3, the ratio of the number of stitches In which is 1: 1.
  • Patent Document 3 it is described that this is excellent in stretchability, texture, peel strength, and tear strength.
  • An object of the present invention is to provide a synthetic leather that has good tension when used in a vehicle seat and is excellent in durability, particularly wear resistance and flex resistance, suitable for automobile interior use. .
  • a synthetic leather for automobiles is a synthetic leather in which a fibrous base material, a skin layer made of polyurethane resin, and a protective layer made of polyurethane resin are sequentially laminated, and the fibrous base material Is a circular knitted fabric with a basis weight of 250 to 350 g / m 2 , the protective layer has a wrinkle pattern on the surface, and the thickness of the protective layer at the crest of the wrinkle pattern is 10 to 20 ⁇ m.
  • the thickness of the protective layer in the part is 3 to 10 ⁇ m and smaller than the thickness in the peak part, the BLC value of the synthetic leather is 3.8 to 5.5, and the 10% modulus value of the synthetic leather is 5 to 20 N / cm.
  • the mass of the polyurethane resin layer including the outer skin layer and the protective layer may be 0.4 to 0.8 times the mass of the fibrous base material.
  • the constant load elongation of the fibrous base material may be 20 to 40% in the vertical direction and 30 to 50% in the horizontal direction.
  • the finish is good, and the durability suitable for automobile interior use, in particular, the abrasion resistance and the bending resistance is excellent.
  • the synthetic leather which concerns on embodiment is synthetic leather by which a polyurethane protective layer is laminated
  • the fibrous base material is a circular knitted fabric having a basis weight of 250 to 350 g / m 2 .
  • the thickness of the embossed portion of the polyurethane protective layer is 10 to 20 ⁇ m, and the thickness of the embossed portion of the embossed pattern is 3 to 10 ⁇ m.
  • the BLC value of synthetic leather is 3.8 to 5.5, and the 10% modulus value of synthetic leather is 5 to 20 N / cm.
  • the BLC value is more preferably 4.2 to 5.0.
  • the 10% modulus value is less than 5 N / cm, the synthetic leather tends to be stretched, and the wear resistance required for the vehicle seat cannot be obtained. If the 10% modulus value exceeds 20 N / cm, the synthetic leather will not stretch well, and the luster will be poor when used for a vehicle seat.
  • the 10% modulus value is more preferably 7.5 to 15 N / cm.
  • the BLC value refers to a value measured by using a tactile sensation measuring device ST300, Laser Softness Tester (manufactured by BLC Leather Technology Center Ltd.).
  • FIG. 1 schematically shows a cross-sectional structure of a synthetic leather 1 according to an embodiment.
  • the skin layer 3 and the protective layer 4 are sequentially laminated on one surface of the fibrous base material 2.
  • the protective layer 4 has a wrinkle pattern (uneven pattern) on its surface, and the thickness T1 of the wrinkle pattern peak 5 is 10 to 20 ⁇ m.
  • the thickness T2 of the embossed valley 6 is 3 to 10 ⁇ m.
  • the thickness T ⁇ b> 1 at the peak portion 5 is the thickness of the protective layer 4 at the top of the peak portion 5.
  • the thickness T ⁇ b> 2 in the valley portion 6 is the thickness of the protective layer 4 at the bottom of the valley portion 6.
  • the depth of the embossed pattern on the surface of the protective layer 4 (that is, the difference in height between the top of the peak 5 and the bottom of the valley 6) T3 is not particularly limited, but is preferably 20 to 400 ⁇ m.
  • the same texture pattern is formed not only on the surface of the protective layer 4 but also on the surface of the skin layer 3 therebelow.
  • the fibrous base material used for the synthetic leather of this embodiment is a circular knitted fabric having a basis weight of 250 to 350 g / m 2 .
  • the resultant synthetic leather has a good elongation balance, and when used for a vehicle seat, it becomes a synthetic leather having a good finish.
  • the weight per unit area is 250 to 350 g / m 2 , a synthetic leather having sufficient durability for automobile interior use, in particular, wear resistance and bending resistance can be obtained.
  • the basis weight of the fibrous base material is less than 250 g / m 2 , the thickness of the synthetic leather becomes thin.
  • the thread of the seat sewing portion does not bite into the synthetic leather, and the sewing thread is synthetic leather. It comes out on the surface and looks bad.
  • the basis weight exceeds 350 g / m 2 , the rigidity of the synthetic leather becomes high, and the sheet tension is poor.
  • the fibrous base material used in this embodiment preferably has a constant load elongation (measured according to the JIS-L1096 method) of 20 to 40% in the vertical direction and 30 to 50% in the horizontal direction. More preferably, the direction is 25 to 35% and the horizontal direction is 35 to 45%.
  • the vertical direction and the horizontal direction are the vertical direction and the horizontal direction when the fibrous base material is knitted.
  • the obtained synthetic leather has good elongation, and when used for a vehicle seat, it becomes a synthetic leather with good finish. More specifically, by increasing the constant load elongation rate to 20% or more in the vertical direction and 30% or more in the horizontal direction, the resulting synthetic leather will have better elongation and improve the tension when used in vehicle seats. Can do. Moreover, the wear resistance requested
  • the kind of fiber used for the fibrous base material is not particularly limited, and examples thereof include conventionally known fibers such as natural fibers, regenerated fibers, semi-synthetic fibers, and synthetic fibers, and two or more of these are combined. It may be.
  • a fiber base material that has been subjected to dry coagulation or wet coagulation by applying or impregnating a conventionally known solvent-based or water-based polymer compound such as polyurethane resin or a copolymer thereof can also be used.
  • synthetic fibers, particularly polyester fibers are preferably used from the viewpoint of strength and processability.
  • the shape of the fiber used for the fibrous base material is not particularly limited, and may be either a long fiber or a short fiber.
  • the cross-sectional shape of the fiber is not particularly limited, and may be not only a normal round shape but also a flat shape, a triangular shape, a hollow shape, a Y shape, a T shape, a U shape, and the like.
  • the form of the yarn used for the fibrous base material is not particularly limited, and may be any of filament yarn (long fiber yarn) and spun yarn (short fiber yarn), and further, long fiber and short fiber. Long and short composite spun yarns may be combined.
  • the filament yarn may be twisted as necessary, and may be imparted with stretchability and bulkiness by false twisting or fluid disturbance treatment.
  • the fineness of the yarn used for the fibrous base material is preferably 110 to 330 dtex, and particularly preferably 220 to 275 dtex.
  • the fineness is 110 dtex or more, the abrasion resistance of the obtained synthetic leather can be improved.
  • the fineness is 330 dtex or less, it is easy to control the elongation balance of the fibrous base material, and the texture is difficult to become coarse and hard. Therefore, the elongation balance and texture of the obtained synthetic leather can be improved. it can.
  • the single yarn fineness of the yarn used for the fibrous base material is preferably 1 to 4 dtex from the viewpoint of improving the adhesion between the fibrous base material and the polyurethane resin layer.
  • a conventionally known knitting structure can be used.
  • circular knitted fabrics double-sided knitting (two rubber knittings) from the point that it is dense and has a solid feeling, is rich in elasticity and elasticity, and is stable without curling (the end of the fabric curls) Rubber knitted fabrics that are made to fit together), or various knitted fabrics by applying a combination of tuck, miss, knit to double-sided knitting.
  • the fibrous base material of the present embodiment has a so-called width and / or width in a heat treatment step such as a heat setter after shrinking the circular knitted fabric by a dyeing step at high temperature and high pressure from the viewpoint of stretchability. It is preferable to put in.
  • the desired stretchability can be obtained by adjusting the density of the circular knitted fabric through these steps.
  • the synthetic leather according to the present embodiment is formed by laminating a skin layer made of a polyurethane resin on the surface of the fibrous base material described above.
  • the skin layer is a general term for a polyurethane resin layer formed on the surface of a fibrous base material, and is composed of at least one resin layer, but can be composed of two or more resin layers having the same or different composition.
  • the skin layer may be composed of a first polyurethane resin layer and a second polyurethane resin layer as an adhesive layer for bonding the first polyurethane resin layer to the fibrous base material.
  • the same polyurethane resin used for conventionally known synthetic leather can be used.
  • the type and layer structure of the polyurethane resin are not particularly limited.
  • polyurethane resin examples include polyether-based polyurethane resins, polyester-based polyurethane resins, and polycarbonate-based polyurethane resins. These can be used alone or in combination of two or more. Of these, polycarbonate-based polyurethane resins are preferable from the viewpoint of flame retardancy, durability, and light resistance.
  • the form of the polyurethane resin can be used regardless of whether it is solventless (solvent-free), hot-melt, solvent-based, or water-based. And may be appropriately selected depending on the application.
  • thermoplastic resin thermosetting resin, dye, pigment, flame retardant, conductivity imparting agent, antistatic agent, moisture permeability improver, water repellent, oil repellent, hollow foam, crystal water-containing compound, water absorbing agent
  • Optional components such as hygroscopic agents, deodorants, foam stabilizers, antifoaming agents, antifungal agents, antiseptics, algaeproofing agents, pigment dispersants, inert gases, antiblocking agents, antihydrolysis agents, etc.
  • One species can be used alone, or two or more species can be used in combination. Especially, it is preferable to use a urethane hardening
  • the thickness of the skin layer made of the polyurethane resin is preferably 100 to 300 ⁇ m, more preferably 180 to 220 ⁇ m.
  • the wear resistance can be improved.
  • the thickness is 300 ⁇ m or less, the BLC value of the synthetic leather can be increased to make it hard to become hard, and when it is used for a vehicle seat, the finish can be improved.
  • the skin layer preferably has a wrinkle pattern (uneven pattern) on its surface. That is, it is preferable that a protective layer having a specific thickness, which will be described later, be formed on the surface of the skin layer having a texture pattern.
  • the wrinkle pattern of the protective layer is formed by the wrinkle pattern of the skin layer, and is preferably formed so as to emphasize the unevenness of the wrinkle pattern of the skin layer due to the specific thickness relationship described later.
  • the synthetic leather of the present embodiment is a surface layer of the above-mentioned polyurethane resin that is the first resin layer laminated on the surface of the fibrous base material, and further, as a second resin layer, a textured peak
  • a protective layer made of a polyurethane resin having a thickness of 10 to 20 ⁇ m and a thickness of 3 to 10 ⁇ m at the bottom of the embossed pattern is laminated. That is, as for the protective layer, the thickness in the embossed ridge is larger than the thickness in the valley.
  • Synthetic leather by making the thickness of the protective layer different in the above-described range between the ridges and valleys of the texture pattern, that is, by making the ridges that are easily worn into a thick layer and the valleys that are not easily worn into a thin layer.
  • the surface becomes solid and wear resistance is improved.
  • the texture of the valley that is the starting point of bending becomes soft, and the bending resistance is improved.
  • the protective layer is a general term for resin layers formed on the surface of the skin layer, and is composed of at least one resin layer, but can be composed of two or more resin layers having the same or different compositions.
  • the thickness of the ridges of the wrinkled pattern is less than 10 ⁇ m, the wear resistance decreases and the wear resistance for the sheet cannot be maintained. If the thickness of the embossed trough exceeds 10 ⁇ m, the hardness of the trough increases, and the flex resistance cannot be maintained when used in a vehicle seat. In addition, by setting the thickness in the valley portion to 3 ⁇ m or more, it is possible to suppress the occurrence of coating spots and maintain the appearance quality.
  • the thickness of the protective layer it is more preferable that the thickness at the peak portion of the embossed pattern is 13 to 17 ⁇ m, and the thickness at the valley portion of the embossed pattern is 5 to 7 ⁇ m.
  • the thickness of the protective layer is an average value of measured values at arbitrary 10 locations.
  • the polyurethane resin used for forming the protective layer is not particularly limited, and examples thereof include a polyether polyurethane resin, a polyester polyurethane resin, a polycarbonate polyurethane resin, and the like. It can be used in combination of more than one species. Of these, polycarbonate polyurethane resins are preferable from the viewpoint of durability and light resistance.
  • the form of the polyurethane resin can be used regardless of whether it is solventless (solvent-free), hot-melt, solvent-based, or water-based. And may be appropriately selected depending on the application.
  • the urethanization catalyst silane coupling agent, filler, thixotropic agent, tackifier, wax, heat stabilizer, light resistance stabilizer, as long as the physical properties of the polyurethane resin are not impaired.
  • Fluorescent brightening agent thermoplastic resin, thermosetting resin, dye, pigment, flame retardant, conductivity imparting agent, antistatic agent, moisture permeability improver, water repellent, oil repellent, hollow foam, crystal water containing Arbitrary compounds, water absorbents, moisture absorbents, deodorants, foam stabilizers, antifoaming agents, antifungal agents, antiseptics, algaeproofing agents, pigment dispersants, inert gases, antiblocking agents, hydrolysis inhibitors, etc.
  • a component can be used individually by 1 type or in combination of 2 or more types.
  • the mass per unit area (dry adhesion amount) of the polyurethane resin layer including the skin layer (first resin layer) and the protective layer (second resin layer) is preferably 100 to 280 g / m 2 , more It is preferably 150 to 200 g / m 2 .
  • the mass (per unit area) of the polyurethane resin layer that combines the skin layer and the protective layer with respect to the mass of the fibrous base material is preferably 0.4 to 0.8 times.
  • the mass ratio of the resin layer / fibrous substrate is 0.4 times or more, the wear resistance is improved.
  • this mass ratio is 0.8 times or less, the fall of a BLC value is prevented and a texture improves.
  • the mass ratio is more preferably 0.5 to 0.7 times.
  • the manufacturing method of the especially preferable form is demonstrated about the synthetic leather which concerns on this embodiment. That is, the manufacturing method of the synthetic leather of this embodiment is not specifically limited, For example, the following method can be mentioned.
  • a composition containing a polyurethane resin is applied to a releasable substrate, and if necessary, heat treatment and aging treatment are performed to form a first polyurethane resin layer constituting a part of the skin layer.
  • an adhesive for forming a second polyurethane resin layer is applied to the surface of the first polyurethane resin layer, and the adhesive is stuck to a fibrous base material in a state where the adhesive has a viscosity.
  • the releasable base material is peeled off to obtain a laminate of the fibrous base material and the skin layer (layer comprising the first and second polyurethane resin layers).
  • the skin layer is a layer formed by applying a polyurethane resin composition to a releasable substrate and peeling the releasable substrate
  • the protective layer is The layer is formed by applying a polyurethane resin composition to the surface of the skin layer.
  • a method for applying the polyurethane resin composition to the releasable substrate various conventionally known methods can be adopted and are not particularly limited. Examples thereof include a method using an apparatus such as a reverse roll coater, a spray coater, a roll coater, a gravure coater, a kiss roll coater, a knife coater, a comma coater, or a T-die coater.
  • coating by a knife coater or a comma coater is preferable at the point that formation of a uniform thin film layer is possible. What is necessary is just to set the application
  • the releasable base material is not particularly limited, and may be any base material having releasability with respect to the polyurethane resin or a base material subjected to a release treatment.
  • release paper, release treatment cloth And water repellent cloth, olefin sheet or film made of polyethylene resin or polypropylene resin, fluororesin sheet or film, and plastic film with release paper may have a concavo-convex pattern obtained by inverting the leather-like texture pattern. By using such a releasable base material, it is possible to impart design properties to the surface of the synthetic leather. it can.
  • the depth of the concavo-convex pattern of the releasable substrate (that is, the difference in height between the bottom of the concave portion and the top of the convex portion) is not particularly limited, but is preferably 20 to 400 ⁇ m.
  • the heat treatment is performed to evaporate the solvent in the polyurethane resin composition and dry the resin. Further, when a cross-linking agent that causes a cross-linking reaction by heat treatment or when using a two-component curable resin, the reaction is promoted to form a film having sufficient strength.
  • the heat treatment temperature is preferably 50 to 150 ° C, more preferably 60 to 120 ° C. By setting the heat treatment temperature to 50 ° C. or more, the heat treatment time can be shortened, the process load can be reduced, and the crosslinking of the resin can be promoted to improve the wear resistance. In addition, by setting the heat treatment temperature to 150 ° C. or less, the texture of the synthetic leather becomes difficult to become coarse and hard.
  • the heat treatment time is preferably 2 to 20 minutes, more preferably 3 to 10 minutes.
  • the resin can be sufficiently crosslinked to improve the wear resistance.
  • the processing speed can be increased and the process load can be reduced.
  • a hot melt resin When a hot melt resin is used as the polyurethane resin, it can be formed by applying a heat-melted resin to the releasable substrate and then cooling, and no heat treatment is required.
  • the first polyurethane resin layer constituting a part of the skin layer is formed on the releasable substrate.
  • an adhesive is applied to the surface of the first polyurethane resin layer formed on the releasable base material, and is bonded to the fibrous base material. If necessary, heat treatment and aging treatment are performed, and then releasability is achieved.
  • the base material is peeled off to obtain a laminate of the fibrous base material and the skin layer.
  • a polyurethane resin composition is applied to the surface of the skin layer of the laminate to form a protective layer.
  • a method of applying the polyurethane resin composition for the protective layer to the surface of the skin layer various conventionally known methods can be adopted and are not particularly limited. Examples thereof include a method using an apparatus such as a reverse roll coater, a spray coater, a roll coater, a gravure coater, a kiss roll coater, a knife coater, a comma coater, or a T-die coater.
  • coating by a roll coater is preferable at the point that it is easy to control to desired thickness. What is necessary is just to set the application
  • the viscosity (20 ° C.) of the polyurethane resin composition is preferably 1000 to 3000 cps (centipoise), more preferably 1500 to 2500 cps.
  • the desired thickness can be obtained, that is, the thickness at the embossed portion of the embossed pattern can be made larger than the thickness at the recessed portion of the embossed pattern. If the viscosity is less than 1000 cps, the resin flows into the valleys on the surface of the skin layer after application, the valleys of the protective layer are thicker than the peaks, and the flexibility may be significantly reduced. If the viscosity exceeds 3000 cps, the resin does not enter the valleys on the surface of the skin layer, resulting in coating spots, which may impair the appearance quality.
  • the heat treatment is performed to evaporate the solvent in the polyurethane resin composition and dry the resin. Further, when a cross-linking agent that causes a cross-linking reaction by heat treatment or when using a two-component curable resin, the reaction is promoted to form a film having sufficient strength.
  • the heat treatment temperature is preferably 50 to 150 ° C, more preferably 60 to 120 ° C. By setting the heat treatment temperature to 50 ° C. or more, the heat treatment time can be shortened, the process load can be reduced, and the crosslinking of the resin can be promoted to improve the wear resistance. In addition, by setting the heat treatment temperature to 150 ° C. or less, the texture of the synthetic leather becomes difficult to become coarse and hard.
  • the heat treatment time is preferably 2 to 20 minutes, more preferably 3 to 10 minutes.
  • the resin can be sufficiently crosslinked to improve the wear resistance.
  • the processing speed can be increased and the process load can be reduced.
  • the thickness of the skin layer (first polyurethane resin layer, second polyurethane resin layer) and protective layer is a vertical cross section of synthetic leather with a microscope (Digital HF microscope VH-8000, manufactured by Keyence Corporation). Observing, measuring the thickness at any 10 locations, and calculating the average value.
  • the thickness in a protective layer is an average value of the thickness in the peak of arbitrary 10 peak parts, and the thickness in a valley part is the average of the thickness in the bottom of arbitrary 10 peak parts. Value.
  • ⁇ The sewing thread bites into the surface of the synthetic leather, the surface is rounded and distorted, and is excellent in sewing properties. Is slightly inferior to the sewing property.
  • ⁇ The surface of the synthetic leather is not distorted at all, and the sewing thread is exposed on the surface, so that the sewing property is inferior.
  • ⁇ No wrinkle is generated in either of the circular test piece A and the test piece B, and the finish is excellent.
  • ⁇ Wrinkle is generated in either the circular test piece A or the test piece B.
  • X Slightly inferior in projecting property
  • ⁇ Wrinkles are generated in both the circular specimen A and the specimen B and inferior in projecting property
  • Prescription 1 Polycarbonate-based polyurethane resin 100 parts (Crisbon NY-328, solid content 20%, manufactured by DIC Corporation) Dimethylformamide (DMF) 40 parts Carbon black pigment 15 parts (DIALAC BLACK L-1770S, solid content 20%, manufactured by DIC Corporation) Cross-linking agent 2 parts (Bernock DN950, solid content 50%, manufactured by DIC Corporation) The viscosity was adjusted to 2000 cps (23 ° C.).
  • Prescription 2 Polycarbonate-based polyurethane resin 100 parts (RU-40-350, solid content 40%, manufactured by Star Japan Co., Ltd.) Smoothing agent 5 parts (HM-183, solid content 30%, manufactured by Star Japan Co., Ltd.) Cross-linking agent 2 parts (XR-78-017, solid content 50%, manufactured by Star Japan Co., Ltd.) Thickener 0.1 part (DF-2569, solid content 50%, manufactured by Star Japan Co., Ltd.) The viscosity was adjusted to 1500 cps (20 ° C.).
  • the polyurethane resin composition (solid content 15%) prepared according to the above-mentioned prescription 1 is applied to release paper (R-51, manufactured by Lintec Corporation) having a leather-like texture pattern (irregular pattern) with a comma coater
  • the film was applied in a sheet form so that the thickness (wet) was 150 ⁇ m, and heat-treated at 100 ° C. for 3 minutes in a dryer to form a first polyurethane resin surface layer constituting a part of the skin layer.
  • the dry adhesion amount of the first polyurethane resin layer was 28 g / m 2 and the thickness was 30 ⁇ m.
  • a urethane polyisocyanate prepolymer (NH230, solid content: 100%, manufactured by DIC Corporation) is applied as a second polyurethane resin layer on the first polyurethane resin layer with a comma coater. was applied to the sheet-like so that the 150 [mu] m, the urethane circular knit fabric of the state where the polyisocyanate prepolymer has a consistency (duplex ed, 220 dtex / 72f, basis weight 300 g / m 2, constant load elongation: vertical 35%, width 42%) and mangled with a load of 5 kg / m 2 .
  • a urethane polyisocyanate prepolymer (NH230, solid content: 100%, manufactured by DIC Corporation) is applied as a second polyurethane resin layer on the first polyurethane resin layer with a comma coater. was applied to the sheet-like so that the 150 [mu] m, the urethane circular knit fabric of
  • the release paper was peeled off to obtain a laminate of the fibrous base material and the skin layer.
  • the dry adhesion amount of the second polyurethane resin layer was 150 g / m 2 and the thickness was 173 ⁇ m.
  • the thickness of the skin layer including the first polyurethane resin layer and the second polyurethane resin layer was 203 ⁇ m, and the dry adhesion amount was 178 g / m 2 .
  • a polyurethane resin composition (solid content 40%) having a viscosity adjusted to 1,500 cps according to Formula 2 was applied to the surface of the skin layer of the obtained laminate with a roll coater at a wet coating amount of 30 g / m 2 . And it heat-processed for 3 minutes at 100 degreeC with dryer, the protective layer was formed, and the synthetic leather for motor vehicles based on an Example was obtained.
  • the dry adhesion amount of the protective layer was 11.9 g / m 2 .
  • the obtained synthetic leather has a 10% modulus value of 7 N / cm, a BLC value of 4.8, a thickness of the protective layer at the ridge portion of the textured pattern of 15 ⁇ m, a thickness of the textured pattern at the valley portion of 7 ⁇ m, The mass of the polyurethane resin layer in which the skin layer and the protective layer were combined with respect to the mass was 0.63 times.
  • Example 2 to 7 [Comparative Examples 1 to 4] Synthetic leather was obtained in the same procedure as in Example 1 except that some configurations were changed according to Table 1. Specifically, in Example 2, the formulation 3 having a viscosity of 3000 cps was used as the polyurethane resin composition forming the protective layer, and in Example 3, the formulation 4 having a viscosity of 1000 cps was used.
  • Example 4 a circular knitted fabric (double-sided knitting, 275 dtex / 96f, basis weight 345 g / m 2 , constant load elongation: 30% vertical, 37% horizontal) was used as the fibrous base material, and the second polyurethane resin
  • the coating thickness (wet) of the urethane polyisocyanate prepolymer (NH230, manufactured by DIC Corporation) forming the layer was 230 ⁇ m in Example 4 and 100 ⁇ m in Example 5.
  • Example 6 the application thickness (wet) of the urethane polyisocyanate prepolymer (NH230, manufactured by DIC Corporation) forming the second polyurethane resin layer was 80 ⁇ m.
  • Example 7 a circular knitted fabric (double-sided knitted fabric, 167 dtex / 144f, basis weight 255 g / m 2 , constant load elongation: vertical 38%, horizontal 47%) was used as the fibrous base material.
  • a circular knitted fabric double-sided knitting, 110 dtex / 36 f, basis weight 180 g / m 2 , constant load elongation: 43% vertical, 52% horizontal
  • a circular knitted fabric double-sided knitted fabric, 330 dtex / 96 f, basis weight 400 g / m 2 , constant load elongation: vertical 25%, horizontal 30%
  • the substrate was used as the substrate.
  • Comparative Example 3 Formulation 5 having a viscosity of 500 cps was used as the polyurethane resin composition for forming the protective layer, and in Comparative Example 4, Formulation 6 having a viscosity of 3500 cps was used.
  • the synthetic leathers of Examples 1 to 7 have excellent seating properties suitable for vehicle seats, excellent sewing properties, and resistance to vehicle seats. It had wear and bending resistance.
  • the fabric weight of the circular knitted fabric which is a fibrous base material was small and the thickness of the synthetic leather was thin, it was inferior to sewing property and tension.
  • the fabric weight of the circular knitted fabric, which is a fibrous base material is large, and the synthetic leather has high rigidity.
  • Comparative Example 3 since the thickness of the protective layer was thin at the embossed peak and thick at the trough, it was inferior in wear resistance and flex resistance.
  • Comparative Example 4 the viscosity of the polyurethane resin composition forming the protective layer was too high, resulting in poor coating, the protective layer was not uniformly formed in the valleys of the textured pattern, and coating spots were generated.
  • the synthetic leather according to the present invention can be used, for example, for automobile interior materials such as automobile seats, ceiling materials, dashboards, door lining materials or handles, based on its excellent tactile sensation, texture and abrasion resistance.

Abstract

La présente invention concerne un cuir synthétique exceptionnellement durable pour une automobile qui présente une excellente qualité visuelle lorsqu'il est utilisé dans un siège de véhicule et qui est adapté à l'application dans un intérieur d'automobile. L'invention concerne un cuir synthétique comprenant un substrat fibreux (2), une couche de surface (3) composée d'une résine de polyuréthane et une couche de protection (4) composée d'une résine de polyuréthane disposés en couches dans l'ordre susmentionné, le substrat fibreux (2) étant un tissu tricoté circulaire présentant un poids de 250 à 350 g/m2, la couche de protection (4) présentant un motif granuleux dans la surface, l'épaisseur (T1) de la couche de protection dans les pics (5) du motif granuleux étant de 10 à 20 μm, l'épaisseur (T2) de la couche de protection dans les creux (6) du motif granuleux étant de 3 à 10 μm, la valeur BLC du cuir synthétique étant de 3,8 à 5,5 et la valeur de module à 10 % du cuir synthétique étant de 5 à 20 N/cm.
PCT/JP2014/003197 2013-07-05 2014-06-16 Cuir synthétique pour automobile WO2015001732A1 (fr)

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BR112015032666-8A BR112015032666B1 (pt) 2013-07-05 2014-06-16 Couro sintético automotivo
CN201480038632.5A CN105377626B (zh) 2013-07-05 2014-06-16 汽车用合成皮革
JP2015525027A JP6353833B2 (ja) 2013-07-05 2014-06-16 自動車用合成皮革
MX2015016993A MX368105B (es) 2013-07-05 2014-06-16 Piel sintetica para automovil.

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JP2016185721A (ja) * 2015-03-27 2016-10-27 テイ・エス テック株式会社 車両内装用表皮材料
WO2018021252A1 (fr) * 2016-07-26 2018-02-01 ヤマハ発動機株式会社 Siège de véhicule et véhicule
WO2018021251A1 (fr) * 2016-07-26 2018-02-01 ヤマハ発動機株式会社 Siège de véhicule et véhicule
JP2018048272A (ja) * 2016-09-23 2018-03-29 豊田合成株式会社 ステアリングパッド用水系塗料及び塗膜
JP2018065306A (ja) * 2016-10-20 2018-04-26 株式会社加平 模様付シート及び模様付シートの製造方法
KR20190030569A (ko) * 2017-09-14 2019-03-22 (주)엘지하우시스 양면 타입의 환편인 이면층을 포함하는 인조가죽 및 이의 제조방법
JP2019131188A (ja) * 2019-05-07 2019-08-08 テイ・エス テック株式会社 車両内装用表皮材料、その製造方法及び車両用シート
EP3647483A4 (fr) * 2017-06-27 2020-07-08 Seiren Co., Ltd. Cuir synthétique
JP2020196977A (ja) * 2019-06-04 2020-12-10 本田技研工業株式会社 合成樹脂レザー
IT201900012411A1 (it) * 2019-07-19 2021-01-19 Carlo Andrea Borsani Processo per la produzione di una pelle artificiale
JP2021073135A (ja) * 2021-02-04 2021-05-13 テイ・エス テック株式会社 車両内装用表皮材料
JP7337588B2 (ja) 2019-08-01 2023-09-04 株式会社帝健 合成皮革用基布および合成皮革

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JP6677540B2 (ja) * 2016-03-15 2020-04-08 セーレン株式会社 車両用複合表皮材
CN110402042A (zh) * 2018-04-24 2019-11-01 乐昌市翔辉皮革有限公司 一种电子装置外壳及其制备方法
KR102002262B1 (ko) * 2018-09-28 2019-07-19 (주)엘지하우시스 자동차 내장재용 인조가죽 및 이의 제조방법
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JP2016185721A (ja) * 2015-03-27 2016-10-27 テイ・エス テック株式会社 車両内装用表皮材料
EP3492357A4 (fr) * 2016-07-26 2019-08-28 Yamaha Hatsudoki Kabushiki Kaisha Siège de véhicule et véhicule
WO2018021252A1 (fr) * 2016-07-26 2018-02-01 ヤマハ発動機株式会社 Siège de véhicule et véhicule
WO2018021251A1 (fr) * 2016-07-26 2018-02-01 ヤマハ発動機株式会社 Siège de véhicule et véhicule
EP3492358A4 (fr) * 2016-07-26 2019-09-18 Yamaha Hatsudoki Kabushiki Kaisha Siège de véhicule et véhicule
JP2018048272A (ja) * 2016-09-23 2018-03-29 豊田合成株式会社 ステアリングパッド用水系塗料及び塗膜
JP2018065306A (ja) * 2016-10-20 2018-04-26 株式会社加平 模様付シート及び模様付シートの製造方法
EP3647483A4 (fr) * 2017-06-27 2020-07-08 Seiren Co., Ltd. Cuir synthétique
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KR20190030569A (ko) * 2017-09-14 2019-03-22 (주)엘지하우시스 양면 타입의 환편인 이면층을 포함하는 인조가죽 및 이의 제조방법
KR102375858B1 (ko) * 2017-09-14 2022-03-18 (주)엘엑스하우시스 인조가죽 및 이의 제조방법
KR102375866B1 (ko) 2017-09-14 2022-03-18 (주)엘엑스하우시스 양면 타입의 환편인 이면층을 포함하는 인조가죽 및 이의 제조방법
JP2019131188A (ja) * 2019-05-07 2019-08-08 テイ・エス テック株式会社 車両内装用表皮材料、その製造方法及び車両用シート
JP2020196977A (ja) * 2019-06-04 2020-12-10 本田技研工業株式会社 合成樹脂レザー
JP7396812B2 (ja) 2019-06-04 2023-12-12 本田技研工業株式会社 合成樹脂レザー
IT201900012411A1 (it) * 2019-07-19 2021-01-19 Carlo Andrea Borsani Processo per la produzione di una pelle artificiale
JP7337588B2 (ja) 2019-08-01 2023-09-04 株式会社帝健 合成皮革用基布および合成皮革
JP2021073135A (ja) * 2021-02-04 2021-05-13 テイ・エス テック株式会社 車両内装用表皮材料

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