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WO2010073949A1 - Feuille de similicuir, et procédé de production correspondant - Google Patents

Feuille de similicuir, et procédé de production correspondant Download PDF

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Publication number
WO2010073949A1
WO2010073949A1 PCT/JP2009/070990 JP2009070990W WO2010073949A1 WO 2010073949 A1 WO2010073949 A1 WO 2010073949A1 JP 2009070990 W JP2009070990 W JP 2009070990W WO 2010073949 A1 WO2010073949 A1 WO 2010073949A1
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WO
WIPO (PCT)
Prior art keywords
hot
polyurethane
melt
type moisture
melt type
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.)
Ceased
Application number
PCT/JP2009/070990
Other languages
English (en)
Japanese (ja)
Inventor
久夫 米田
善典 金川
実 鷹嘴
淑文 玉木
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
DIC Corp
Kuraray Co Ltd
Original Assignee
DIC Corp
Kuraray Co Ltd
Dainippon Ink and Chemicals Co Ltd
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 DIC Corp, Kuraray Co Ltd, Dainippon Ink and Chemicals Co Ltd filed Critical DIC Corp
Priority to JP2010544020A priority Critical patent/JP5635414B2/ja
Publication of WO2010073949A1 publication Critical patent/WO2010073949A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
    • B29C41/24—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of indefinite length
    • B29C41/26—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of indefinite length by depositing flowable material on a rotating drum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
    • B29C41/24—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of indefinite length
    • B29C41/30—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of indefinite length incorporating preformed parts or layers, e.g. moulding around inserts or for coating articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
    • B29C41/24—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of indefinite length
    • B29C41/32—Making multilayered or multicoloured articles
    • 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
    • B32B27/06—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
    • B32B27/10—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 paper or cardboard
    • 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
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/06—Interconnection of layers permitting easy separation
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/0086—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the application technique
    • D06N3/0095—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the application technique by inversion technique; by transfer processes
    • D06N3/0097—Release surface, e.g. separation sheets; Silicone papers
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/12—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins
    • D06N3/14—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyurethanes
    • 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
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2075/00—Use of PU, i.e. polyureas or polyurethanes or derivatives thereof, as moulding material
    • 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
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
    • B32B37/24—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer not being coherent before laminating, e.g. made up from granular material sprinkled onto a substrate
    • B32B2037/243—Coating
    • 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
    • B32B2307/726—Permeability to liquids, absorption
    • B32B2307/7265—Non-permeable
    • 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
    • B32B2307/748—Releasability
    • 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
    • B32B2375/00—Polyureas; 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
    • B32B2437/00—Clothing
    • 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
    • B32B2437/00—Clothing
    • B32B2437/02—Gloves, shoes
    • 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
    • B32B2439/00—Containers; Receptacles
    • 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
    • B32B2479/00—Furniture
    • 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
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/02—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by a sequence of laminating steps, e.g. by adding new layers at consecutive laminating stations
    • B32B37/025—Transfer laminating

Definitions

  • the present invention relates to a leather-like sheet comprising a polyurethane laminate and a method for producing the same.
  • a leather-like sheet made of a polyurethane laminate has been widely used as a surface material for footwear, clothing, bags, furniture, and the like.
  • a composite fiber base material in which a fibrous base material such as a nonwoven fabric, a woven fabric, or a knitted fabric is impregnated with polyurethane is used as a base fabric, and the surface of such a base fabric is used.
  • the intermediate layer is formed by applying a solvent-type polyurethane or water-based polyurethane to the surface of the base fabric and then drying, or by adhering a polyurethane film previously formed on the surface of the release paper to the surface of the base fabric with an adhesive. It is formed using.
  • Patent Document 1 discloses a method of using a hot-melt moisture-curing polyurethane as a method for producing a leather-like sheet that can reduce the amount of organic solvent used.
  • FIG. 3 of Patent Document 1 describes a method of bonding a film layer made of hot-melt type moisture-curing polyurethane on a substrate with an adhesive made of hot-melt type moisture-curing polyurethane. ing.
  • this method will be described in detail.
  • FIG. 1 shows a drawing quoting [FIG. 3] described in Patent Document 1.
  • 30 is a delivery reel of release paper (release paper) 301
  • 36 is a delivery reel of a base material 37
  • 38 is a take-up reel of a leather-like sheet as a product
  • 31, 32, 33a, 33b, 34 , 35 are rollers
  • 303 and 305 are knife coaters for applying hot-melt type moisture-curing polyurethanes 312 and 313
  • 304 is a steam sprayer.
  • the release paper 301 wound around the delivery reel 30 is carried on rollers 31 and 32. Then, a coating layer is formed by applying a hot-melt type moisture-curing polyurethane 312 in a molten state to the surface of the release paper 301 with a knife coater 303. Subsequently, water vapor is sprayed onto the film layer made of the hot-melt type moisture-curing polyurethane 312 with the water vapor sprayer 304.
  • a hot-melt type moisture-curing polyurethane 313 in a molten state is further applied as an adhesive on the coating layer made of the hot-melt type moisture-curing polyurethane 312 with the knife coater 305 To do.
  • the base material 37 is supplied from the delivery reel 36, and the base material 37 is bonded to the adhesive layer of the hot-melt type moisture-cure polyurethane with the roller 35 to manufacture a leather-like sheet.
  • the hot-melt moisture-curing polyurethane is applied to the substrate by heating and melting, and then solidified by being cooled to a predetermined temperature after application. By having such heat melting property, excellent coating workability is exhibited.
  • a film layer made of hot-melt type moisture-cured polyurethane 312 applied in a molten state to the surface of the release paper 301 is sprayed with water vapor by a water vapor sprayer 304, and then a roller 33a. , 33b and sent to the roller 34.
  • the curing reaction is accelerated by spraying water vapor.
  • the curing reaction does not proceed sufficiently, so that adhesiveness (tack) remains on the surface. And tackiness is suppressed because hardening reaction advances with high molecular weight with the injected water vapor
  • the coating layer formed from the hot melt moisture-curing polyurethane 312 is sufficiently crosslinked and cured by reducing the line feed rate, the tack is reduced to some extent and the transportability is improved to some extent. Is done.
  • the adhesion with the layer made of the hot-melt type moisture-curing polyurethane 313 to be laminated was not sufficiently high. This is because when an intermediate layer made of hot-melt type moisture-cured polyurethane is further laminated on the skin layer made of hot-melt type moisture-cured polyurethane that has undergone a curing reaction to some extent, This is probably because the formation of a clear interface between them decreases the peel strength at the interface.
  • the present invention provides a polyurethane having a good process passability and a high peel strength at the laminated portion in the production of a leather-like sheet having a skin layer and an intermediate layer made of hot-melt type moisture-curing polyurethane on a base fabric. It aims at providing the method of manufacturing the leather-like sheet
  • One aspect of the present invention is that a first application step of applying heat-melted first hot-melt type moisture-cure polyurethane to the surface of the first sheet, and the applied first hot-melt type moisture-cure polyurethane are melted Or the 2nd application process of apply
  • Another aspect of the present invention is a leather-like sheet obtained by the above production method.
  • FIG. 1 is a drawing in which [FIG. 3] described in Patent Document 1 is cited.
  • FIG. 2 is a schematic process diagram illustrating a method for manufacturing a leather-like sheet according to the first embodiment.
  • FIG. 3 is a schematic process diagram illustrating a manufacturing method according to a modification of the first embodiment.
  • FIG. 4 is a schematic cross-sectional view of the leather-like sheet obtained by the process of the first embodiment.
  • the method for producing a leather-like sheet of the present invention includes a first application step of applying a first hot-melt type moisture-cured polyurethane, which is heated and melted, to the surface of the first sheet, and the applied first hot-melt type moisture.
  • a second application step of applying a second hot-melt type moisture-cure polyurethane heated and melted on the surface of the cured polyurethane in a melted or softened state; and the applied second hot-melt type moisture-cure polyurethane The manufacturing method of a polyurethane laminated body provided with the bonding process which bonds a 2nd sheet
  • seat, or the base fabric (base material) already formed with the polyurethane layer etc. Is used.
  • a release paper, a polyurethane film with a release paper, or the like can be used for the other sheet.
  • FIG. 2 is a schematic process diagram illustrating a method for producing a polyurethane laminate according to this embodiment.
  • 1 is a release paper
  • 2 is a first hot melt type moisture curing polyurethane
  • 3 is a second hot melt type moisture curing polyurethane
  • 4 is a base fabric.
  • Reference numeral 11 denotes a delivery reel of the release paper 1
  • 12 denotes a delivery reel of the base cloth 4
  • 13 denotes a take-up reel of the leather-like sheet 10.
  • 2a is a knife coater
  • 3a is a roll coater
  • 2b and 3b are resin feeders each having a heater (not shown).
  • the knife coater 2a and the roll coater 3a are sequentially arranged around the main roll R rotating in the direction of the arrow in FIG. Further, a calendar roll CR is provided for bonding the base fabric 4 delivered from the delivery reel 12 to the surface of the molten second hot-melt moisture-curing polyurethane 2.
  • the release paper 1 is continuously fed from the feed reel 11, conveyed by the main roll R rotating in the direction of the arrow, and then wound by the take-up reel 13 to form a line.
  • the first hot-melt moisture-curing polyurethane 2 accommodated in the resin feeder 2b and heated and melted flows down toward the release paper 1 on the line while maintaining the molten state, and the release paper is supplied by the knife coater 2a. It is applied to one surface with a uniform thickness (first application step).
  • a release paper having an embossed pattern may be used in addition to a smooth release paper for the purpose of imparting surface design.
  • the hot-melt type moisture-cure polyurethane is a polyurethane-forming component having a heat melting property and a moisture-curing property containing a urethane prepolymer obtained by reacting a polyol and a polyisocyanate as a main component.
  • Hot melt moisture-curing polyurethane has a heat-melting property that is solid at room temperature or has a viscosity that is difficult to apply. It solidifies and develops adhesiveness. As described above, the hot-melt moisture-curing polyurethane is applied to a base fabric or a release paper by being melted by heating, and after being applied, it is solidified by being cooled.
  • the moisture (humidity) curability of the hot melt moisture-curing polyurethane is based on a curing reaction in which the isocyanate group terminal in the urethane prepolymer and moisture (water) react to form a urethane bond or a urea bond.
  • the curability of the hot-melt type moisture-curing polyurethane depends on a crosslinking reaction caused by the reaction of the formed urethane bond or urea bond with an isocyanate group present in the system. Then, through such a curing reaction and a crosslinking reaction, the urethane prepolymer has a high molecular weight, whereby a polyurethane cured product having excellent mechanical properties and water resistance is formed.
  • the moisture curing reaction of the hot melt moisture-curing polyurethane is completely cured over a relatively long period of time, specifically, for example, about 20 to 50 hours. Therefore, immediately after being heated and melted and applied, and immediately after cooling and solidifying, adhesiveness (tackiness) remains on the surface. Then, by aging for about 20 to 50 hours under predetermined temperature and humidity conditions, the crosslinking reaction proceeds to increase the molecular weight. And tackiness disappears.
  • urethane prepolymer contained in the hot-melt type moisture-curing polyurethane as described above those obtained by reacting polyol and polyisocyanate can be used.
  • polyester polyol for example, polyester polyol, polyether polyol, polycarbonate polyol and the like can be used.
  • polyether polyol especially polytetramethylene glycol.
  • polycarbonate polyol when the leather-like sheet is used for a car seat or a furniture member, it is preferable to use polycarbonate polyol because high durability (heat resistance, hydrolysis resistance, etc.) is required.
  • the polyether polyol and polycarbonate polyol such as polytetramethylene glycol are preferably used in an amount of 40% by mass or more based on the total amount of polyol used.
  • polyisocyanate that reacts with the polyol examples include aromatic diisocyanates such as phenylene diisocyanate, tolylene diisocyanate, 4,4′-diphenylmethane diisocyanate, 2,4′-diphenylmethane diisocyanate, naphthalene diisocyanate, xylylene diisocyanate, hexa Polymers such as dimers and trimers of aliphatic diisocyanates such as methylene diisocyanate, lysine diisocyanate, cyclohexane diisocyanate, isophorone diisocyanate, dicyclohexylmethane diisocyanate, tetramethylxylylene diisocyanate and the like, and alicyclic diisocyanates, 4,4′-diphenylmethane diisocyanate Use diphenylmethane diisocyanate, etc.
  • aromatic diisocyanates such as
  • naphthalene diisocyanate and xylylene diisocyanate which are non-yellowing polyisocyanates with excellent light resistance, from the viewpoint of preventing yellowing due to light
  • aromatic diisocyanates such as hexamethylene diisocyanate, lysine diisocyanate, cyclohexane diisocyanate, isophorone diisocyanate, dicyclohexylmethane diisocyanate, and tetramethylxylylene diisocyanate.
  • the production of the urethane prepolymer can usually be carried out in the absence of a solvent, but it may be carried out in an organic solvent.
  • an organic solvent such as ethyl acetate, n-butyl acetate, methyl ethyl ketone, and toluene that does not inhibit the reaction between the polyol and the polyisocyanate can be used. It is necessary to remove the organic solvent later by a method such as heating under reduced pressure.
  • the number average molecular weight of the urethane prepolymer in the hot melt moisture-curing polyurethane is preferably in the range of 500 to 30,000, more preferably 1000 to 10,000.
  • the urethane prepolymer contained in the first hot-melt type moisture-curing polyurethane has a number average molecular weight in the range of 500 to 5,000 and is contained in the second hot-melt type moisture-curing polyurethane.
  • the urethane prepolymer having a number average molecular weight in the range of 600 to 30,000 is preferable from the viewpoint that the melt viscosity resulting from workability can be easily adjusted.
  • the melt viscosity of the hot-melt type moisture-curing polyurethane is 100 to 100 for both the first hot-melt type moisture-curing polyurethane and the second hot-melt type moisture-curing polyurethane.
  • the range of 15000 mPa ⁇ s, more preferably in the range of 1000 to 10000 mPa ⁇ s is preferable because it can be applied as a thin film.
  • the hot-melt type moisture-curing polyurethane in the present embodiment is usually a resin component mainly composed of a urethane prepolymer, a urethanization catalyst, a colorant such as a pigment, a thickener, a crosslinking agent, a crosslinking accelerator, an oxidation agent. Used as a resin composition containing additives such as an inhibitor. Moreover, when it is desired to form a polyurethane layer formed from hot-melt moisture-curing polyurethane as a foamed polyurethane layer, a foaming agent is blended. Such a resin composition can be obtained by uniformly mixing a resin component mainly composed of a urethane prepolymer and other components in a heated and melted state.
  • the coating mechanism for applying hot melt type moisture-curing polyurethane to the surface of the release paper 1 by heating and melting in addition to the knife coater and roll coater as shown in FIG. 2, for example, reverse roll coater and reverse coater A kiss roll coater, a spray coater, a T-die coater, a comma coater or the like can be used.
  • the application mechanism provided with the heating means is preferable from the point that the melt viscosity of the hot-melt type moisture-curing polyurethane can be controlled.
  • the melt viscosity of the first hot-melt moisture-curing polyurethane at the time of application is preferably in the range of 1000 to 15000 mPa ⁇ s, more preferably 2000 to 10000 mPa ⁇ s, from the viewpoint of excellent coating workability.
  • the thickness of the polyurethane layer formed from the first hot-melt type moisture-cured polyurethane is excellent in flexibility and mechanical strength when it is in the range of 5 to 800 ⁇ m, more preferably 10 to 500 ⁇ m after curing. This is preferable from the viewpoint of obtaining a leather-like sheet.
  • the second hot-melt type moisture-cure polyurethane that is heated and melted is applied to the surface (first). 2 application process).
  • the release paper 1 coated with the first hot melt type moisture curing polyurethane 2 is conveyed in the direction of the roll coater 3a for applying the second hot melt type moisture curing polyurethane 3 by the main roll R rotating in the direction of the arrow. Is done. And the 2nd hot-melt type moisture hardening polyurethane 3 accommodated in the resin feeder 3b is apply
  • the state in which the hot-melt type moisture-curing polyurethane is melted or softened means a state in which the hot-melt type moisture-curing polyurethane that has been melted by heating is not solidified.
  • the moisture-curing polyurethane itself retains fluidity, or the hot-melt moisture-curing polyurethane retains fluidity due to external force, or at least partially retains fluidity.
  • the melt viscosity of the first hot-melt type moisture-cure polyurethane is higher than the melt viscosity of the second hot-melt type moisture-cure polyurethane.
  • the melt viscosity of the first hot-melt type moisture-curing polyurethane is adjusted to be in the range of 1.5 to 2 times the melt viscosity of the second hot-melt type moisture-curing polyurethane.
  • the second hot-melt type moisture-cure polyurethane is applied to a coating layer made of the first hot-melt type moisture-cure polyurethane in a molten or softened state.
  • the melt viscosity of the first hot melt moisture-curing polyurethane when applying the second hot melt moisture-curing polyurethane is too low, the first hot melt moisture-curing polyurethane and the second hot melt polyurethane There is a tendency that the two-layer structure cannot be sufficiently maintained due to mixing with the melt-type moisture-curing polyurethane. From this point, in the second coating step, the melt viscosity of the first hot-melt type moisture-curing polyurethane is in the range of 1.5 to 2 times the melt viscosity of the second hot-melt type moisture-curing polyurethane. Is more preferable.
  • melt viscosity can be performed, for example, as follows.
  • the first hot melt type moisture curing polyurethane 2 is applied by a knife coater 2a
  • the second hot melt type moisture curing polyurethane 3 is applied by a roll coater 3a.
  • the temperature of the knife coater 2a and the roll coater 3a is controlled by a heater (not shown), respectively, so that the first hot-melt type moisture-curing polyurethane 2 and the second hot-melt type moisture-curing polyurethane in the second coating step. 3 melt viscosity can be controlled.
  • the main roll R is used using the integrated application
  • the first moisture-curing polyurethane 2 is accommodated in the upstream resin supply part 22b with respect to the rotation direction of the main roll R, and the second moisture-curing polyurethane 3 is accommodated in the resin supply part 23b downstream with respect to the rotation direction of the main roll R.
  • the melt viscosity when applying the second hot-melt type moisture-curing polyurethane is preferably in the range of 1000 to 10000 mPa ⁇ s, more preferably 2000 to 7000 mPa ⁇ s, from the viewpoint of excellent coating workability.
  • the melt viscosity of the first hot-melt type moisture-curing polyurethane is preferably 1500 to 15000 mPa ⁇ s, more preferably 3500 to 14000 mPa ⁇ s.
  • the thickness of the polyurethane layer formed from the second hot-melt type moisture-cured polyurethane should be in the range of 5 to 800 ⁇ m, more preferably 10 to 500 ⁇ m as the thickness after curing, in terms of flexibility and mechanical strength. This is preferable because an excellent leather-like sheet can be obtained.
  • the base fabric 4 is sent out from the delivery reel 12 and bonded by the calender roll CR in a state where the applied second hot-melt type moisture-curing polyurethane 3 is melted or softened.
  • the base fabric 4 used in the present embodiment include, for example, fiber base materials generally used for leather-like sheets such as non-woven fabrics, woven fabrics, and knitted fabrics; Examples thereof include composite fiber base materials impregnated with water-based, emulsion-based or solvent-free polyurethane resins, acrylic resins, butadiene-based resins (SBR, NBR, MBR) and the like.
  • the composite fiber base material which impregnated the polyurethane resin to the nonwoven fabric formed from the ultrafine fiber is used especially preferable from the point from which the leather-like sheet
  • nonwoven fabric a conventionally known short fiber web, a web obtained by a known method such as a spunbond method or a melt blow method can be used without any particular limitation. Moreover, after forming a web as needed, you may obtain by laminating
  • the fibers forming the nonwoven fabric include, for example, polyurethane fibers, polyethylene terephthalate (PET) fibers, various polyamide fibers, polyacrylic fibers, various polyolefin fibers, and polyvinyl alcohol fibers.
  • the fibers forming the nonwoven fabric are preferably ultrafine fibers having a fiber diameter of 0.1 to 50 ⁇ m, more preferably 1 to 15 ⁇ m. Such ultrafine fibers are preferred because they have a low rigidity and are soft, so that a leather-like sheet having a soft texture can be obtained.
  • the basis weight of the nonwoven fabric is preferably in the range of 50 to 2000 g / m 2 , more preferably in the range of 100 to 1000 g / m 2 , from the viewpoint of obtaining a leather-like sheet having a soft texture and excellent process passability.
  • seat 10 is formed by sticking the base fabric 4 on the surface of the 2nd hot-melt type moisture hardening polyurethane 3 of a molten or softened state with the calendar roll CR. Then, the obtained leather-like sheet 10 is taken up by the take-up reel 13 while being covered with the release paper 1.
  • the moisture hardening reaction of the 1st hot melt type moisture hardening polyurethane 2 and the 2nd hot melt type moisture hardening polyurethane 3 advances by curing the wound leather-like sheet 10 for a predetermined time, and hot
  • the melt-type moisture-cured polyurethane has a high molecular weight.
  • the aging conditions of the obtained leather-like sheet 10 are preferably aging for about 20 to 50 hours at a temperature of 20 to 40 ° C. and a relative humidity of 50 to 80%.
  • the hot-melt type moisture-curing polyurethane is moisture-cured and moisture-crosslinked.
  • seat excellent in mechanical strength and water resistance is obtained.
  • the first hot-melt type moisture-curing polyurethane is not particularly limited as long as the second hot-melt type moisture-curing polyurethane heated and melted can be applied to the surface in a melted or softened state. It is preferably within 1 m, and more preferably within 50 cm, in that the first hot-melt type moisture-cured polyurethane can stably maintain the melted or softened state.
  • the second moisture-curing polyurethane 3 is applied in a heated and melted state before re-solidifying.
  • the polyurethane layer formed from the first hot-melt type moisture-curing polyurethane 2 and the polyurethane layer formed from the second hot-melt type moisture-curing polyurethane 3 are cross-linked with each other, and the peel strength at the interface is high.
  • the curing reaction of the first hot-melt type moisture-cured polyurethane 2 in a molten or softened state does not proceed sufficiently. Therefore, the first hot-melt type moisture-cure polyurethane 2 and the second hot-melt type moisture-cure polyurethane 3 form a sufficient cross-linked structure at their interface, and the interface of these layers is obscured. Can do.
  • the leather-like sheet 10 is completed by peeling the release paper 1 coated on the surface.
  • the release paper 1 is sent out as the first sheet from the delivery reel 11 and the base cloth 4 is sent out as the second sheet from the delivery reel 12.
  • the supply of the release paper 1 and the supply of the base cloth 4 are performed.
  • the base cloth 4 may be sent out as a first sheet from the delivery reel 11 and the release paper 1 may be sent out as a second sheet from the delivery reel 12 by changing the order.
  • a hot melt type moisture hardening polyurethane is used as a base fabric or a release paper. After the coating, the first hot-melt type moisture-curing polyurethane is melted or softened, and the second hot-melt type moisture-curing polyurethane in a heat-melted state is applied without particular limitation. sell.
  • the leather-like sheet thus obtained has a first polyurethane layer formed from the first hot-melt type moisture-cure polyurethane 2 and a second polyurethane layer formed from the second hot-melt type moisture-cure polyurethane 3. Can maintain high adhesion. For this reason, in the obtained leather-like sheet, the appearance and texture with fine creases and uniform uniformity are improved.
  • the surface layer portion is made of a solvent-based, water-based, emulsion-based or solvent-free polyurethane resin or acrylic resin. Coating or post-processing such as buffing or embossing may be appropriately performed.
  • the leather-like sheet thus obtained can be preferably used as a leather-like sheet that becomes a surface material for footwear, clothing, bags, furniture, and the like.
  • the melt viscosity (mPa ⁇ s) of each hot-melt moisture-curing polyurethane was measured using a cone plate viscometer (manufactured by ICI) with the cone plate temperature set to a predetermined temperature.
  • the melt viscosity of the second hot melt moisture-curing polyurethane in the second coating step was defined as the melt viscosity of the second hot melt moisture-curing polyurethane at the coating temperature (knife coater temperature) in the second coating step. .
  • melt viscosity of the first hot-melt type moisture-curing polyurethane in the second coating step is the surface of the applied first hot-melt type moisture-curing polyurethane immediately before the second hot-melt type moisture-curing polyurethane is applied. The temperature was measured and taken as the melt viscosity at that temperature.
  • ⁇ Base fabric> A water-soluble polyurethane (Hydran WLS612 manufactured by DIC Corporation) was impregnated into an entangled nonwoven fabric made of ultrafine fibers having an average fineness of 0.07 dtex.
  • Tyforth EXP-BH50 hot melt type moisture-cured polyurethane manufactured by DIC Corporation
  • POLYTON PU-9382 BLACK manufactured by DIC Corporation, the same applies hereinafter
  • Example 1 A leather-like sheet was manufactured using a manufacturing process as shown in FIG.
  • the release paper 1 is continuously fed out from the feed reel 11 as a first sheet at a speed of 1 m / min, conveyed by the main roll R rotating in the direction of the arrow, and taken up by the take-up reel 13 to form a line. Formed.
  • the surface temperature of the main roll R was controlled to be 50 ° C.
  • the hot melt type moisture curing polyurethane A accommodated in the resin feeder 2b as the first hot melt type moisture curing polyurethane 2 flows down in a state melted at 110 ° C.
  • the coater 2a was applied to the surface of the release paper 1 with a uniform thickness (first application step).
  • the surface temperature of the knife coater 2a was controlled at 110 ° C. with a heater (not shown). At this time, the gap between the knife coater 2a and the release paper was adjusted to 50 ⁇ m.
  • the hot melt type moisture cured polyurethane A applied to the surface of the release paper 1 is melted at 135 ° C. as the second hot melt type moisture cured polyurethane 3 on the surface thereof.
  • Moisture-cure polyurethane C was applied (second application step).
  • the surface temperature of the roll coater 3a was controlled to 135 ° C. by a heater (not shown).
  • the gap between the roll coater 3a and the release paper was adjusted to 250 ⁇ m.
  • the surface temperature of the applied hot melt moisture-curing polyurethane A was about 120 ° C., and the melt viscosity at that time was about 5000 mPa ⁇ s.
  • melt viscosity at 135 ° C. of the hot-melt type moisture-cure polyurethane C was about 2500 mPa ⁇ s. Therefore, the melt viscosity of the hot melt moisture-curing polyurethane A in the second coating step was about twice the melt viscosity of the hot melt moisture-curing polyurethane C.
  • the base fabric 4 as the second sheet was bonded to the surface of the applied hot-melt type moisture-cure polyurethane C in a molten state (bonding step).
  • the base fabric 4 was sent out from the delivery reel 12 and bonded with a calendar roll CR in a state where the hot-melt moisture-cure polyurethane C was melted.
  • the surface temperature of the calendar roll CR was controlled at 50 ° C. by a heater (not shown). In this way, a leather-like sheet 10 having a layer structure as shown in FIG. 4 was formed. Then, the obtained leather-like sheet was wound up by the take-up reel 13 while being covered with a release paper.
  • the leather-like sheet 10 was aged for 35 hours under the conditions of a temperature of 40 ° C. and a relative humidity of 60%. After aging, the obtained leather-like sheet 10 was cut by a predetermined area, the release paper was peeled off, and interlayer adhesion was evaluated by the following method.
  • the peel strength of the obtained leather-like sheet was 11.0 kg / 25 mm, and internal peeling occurred within the four layers of the base fabric.
  • Example 2 The manufacturing process as shown in FIG. 3 with different application mechanisms was used, and the hot-melt moisture-cure polyurethane B was used as the first hot-melt moisture-cure polyurethane 2. A leather-like sheet was manufactured.
  • an integrated coating mechanism 25 including two knife coaters 22a and 23a and two resin supply portions 22b and 23b for storing hot-melt type moisture-cure polyurethane is used.
  • the resin supply unit 22b stores hot melt type moisture curing polyurethane B as the first hot melt type moisture curing polyurethane 2
  • the resin supply unit 23b stores the second hot melt type moisture curing polyurethane 3 as the hot melt type moisture curing polyurethane 3. Mold moisture cured polyurethane C was housed.
  • the release paper 1 was continuously sent out from the delivery reel 11 as a first sheet at a speed of 1 m / min, conveyed by the main roll R rotating in the direction of the arrow, and taken up by the take-up reel 13 to form a line.
  • the surface temperature of the main roll R was controlled to be 50 ° C.
  • the hot melt moisture-curing polyurethane B accommodated in the resin supply unit 22b flows down toward the release paper 1 on the line in a melted state, and the knife coater 22a has a uniform thickness on the surface of the release paper 1 It applied (first application process).
  • the hot-melt type moisture-cure polyurethane C accommodated in the resin supply unit 23b was flowed down in a molten state and applied with a uniform thickness by the knife coater 23a (second application step).
  • the gap between the knife coater 22a and the release paper surface was adjusted to 50 ⁇ m, and the gap between the knife coater 23a and the release paper surface was adjusted to 250 ⁇ m.
  • the knife coater 22a and the resin supply unit 22b were controlled at 110 ° C., and the knife coater 23a and the resin supply unit 23b were controlled at 120 ° C.
  • the surface temperature of the hot-melt type moisture-cured polyurethane B applied in the first application step was about 110 ° C., and the melt viscosity at that time was about 5000 mPa ⁇ s. Further, the melt viscosity at 120 ° C. of the hot-melt type moisture-cure polyurethane C was about 3200 mPa ⁇ s. Therefore, the melt viscosity of the hot melt moisture-curing polyurethane B in the second coating step was about 1.6 times the melt viscosity of the hot melt moisture-curing polyurethane C.
  • Example 2 The subsequent steps were performed in the same manner as in Example 1 to produce a leather-like sheet.
  • the peel strength of the obtained leather-like sheet was 10.2 kg / 25 mm, and internal peeling occurred within the four layers of the base fabric.
  • Example 3 In the first coating step, the hot-melt type moisture-curing polyurethane A is flowed down in a melted state at 100 ° C., and in the second coating step, the hot-melt type moisture-curing polyurethane C is flowed down in a melted state at 140 ° C. Produced a leather-like sheet in the same manner as in Example 1. At this time, the surface temperature of the roll coater 3a was controlled to 140 ° C. by a heater (not shown).
  • the melt viscosity of the hot-melt type moisture-cured polyurethane A applied in the first coating step is about 6500 mPa ⁇ s
  • the melt viscosity of the hot-melt type moisture-cured polyurethane C is about 6500 mPa ⁇ s.
  • the melt viscosity of the hot melt moisture-curing polyurethane A in the second coating step was about 3.6 times the melt viscosity of the hot melt moisture-curing polyurethane C.
  • Example 4 In the first coating step, the hot-melt type moisture-curing polyurethane A flows down in a state melted at 120 ° C., and in the second coating step, the hot-melt type moisture-curing polyurethane C flows down in a state melted at 115 ° C. Produced a leather-like sheet in the same manner as in Example 1. At this time, the surface temperature of the roll coater 3a was controlled to 115 ° C. by a heater (not shown).
  • the melt viscosity of the hot-melt type moisture-cured polyurethane A applied in the first coating step is about 2700 mPa ⁇ s
  • the melt viscosity of the hot-melt type moisture-cured polyurethane C is about 2700 mPa ⁇ s.
  • the melt viscosity of the hot melt moisture-curing polyurethane A in the second coating step was about 0.7 times the melt viscosity of the hot melt moisture-curing polyurethane C.
  • the peel strength of the obtained leather-like sheet was 10.6 kg / 25 mm, and internal peeling occurred within the four layers of the base fabric.
  • the polyurethane layer formed from the hot-melt type moisture-curing polyurethane A and the polyurethane layer formed from the hot-melt type moisture-curing polyurethane C were partially mixed.
  • the release paper 1 was fed from the feed reel 30 toward the take-up reel 38 at a speed of 1 m / min to form a line. Then, the release paper 1 wound around the delivery reel 30 was carried on rollers 31 and 32. And the coating layer was formed by apply
  • the first hot-melt type moisture-curing polyurethane 2 was partially left on the surface. Therefore, the laminated intermediate body is wound around the rollers 33a and 33b shown in FIG.
  • the obtained leather-like sheet was aged for 35 hours under conditions of a temperature of 40 ° C. and a relative humidity of 60%. Then, after aging, the obtained leather-like sheet was cut by a predetermined area, the release paper was peeled off, and the interlayer adhesion was evaluated by the same method as in Example 1. As a result, the peel strength of the leather-like sheet was 6.5 kg / 25 mm, and interface peeling occurred at the interface between the layer made of hot-melt type moisture-curing polyurethane A and the layer made of hot-melt type moisture-curing polyurethane B. It was.
  • the leather-like sheets obtained in Examples 1 to 4 according to the present invention all had high peel strength.
  • Examples 1 to 2, and 4 no peeling was observed at the interface between the polyurethane layers. This is probably because the two types of hot-melt type moisture-cured polyurethane are laminated in a molten state, so that the interface becomes unclear and a sufficient crosslinked structure is formed at the interface.
  • Example 3 some peeling was partially also at the interface between the polyurethane layer formed from the hot-melt type moisture-curing polyurethane A and the polyurethane layer formed from the hot-melt type moisture-curing polyurethane C. Although seen, the peel strength was sufficiently high.
  • Comparative Example 1 when the hot-melt type moisture-curing polyurethane A was applied and re-solidified, the tackiness remained and the continuous production was difficult. Further, as in Comparative Example 2, when the hot melt moisture-curing polyurethane A was applied and produced on a low-speed line that solidified to such an extent that tack was eliminated, the peel strength was remarkably low. This is presumably because the interface between the two polyurethane layers became clear and a sufficient crosslinked structure was not formed between the two layers.
  • the first hot-melt type moisture-cured polyurethane heated and melted is applied to the surface of the first sheet, and the first hot-melt applied
  • a second application step of applying a second hot-melt type moisture-curing polyurethane heated and melted on the surface of the mold-moisture-curing polyurethane in a melted or softened state, and the applied second hot-melt type moisture It is a manufacturing method of a leather-like sheet provided with the pasting process of pasting the 2nd sheet on the surface in the state where hardened polyurethane has melted or softened.
  • the peel strength at the interface is increased by forming an interface in which the first hot-melt type moisture-cured polyurethane and the second hot-melt type moisture-cured polyurethane are cross-linked with each other. . Further, by making it difficult to form a clear interface formed by the above-described conventional manufacturing method, the interface becomes unclear and the peel strength at the interface becomes higher.
  • the first hot-melt type moisture-cured polyurethane in the melted or softened state is coated with the second hot-melt type moisture-cured polyurethane before the curing reaction sufficiently proceeds. A sufficient cross-linked structure can be formed between the layer formed by the moisture-cured polyurethane and the layer formed by the second hot-melt type moisture-cured polyurethane.
  • the surface of the layer made of the first hot-melt type moisture-curing polyurethane and the layer made of the second hot-melt type moisture-curing polyurethane are coated with the first sheet and the second sheet, respectively. Therefore, tack derived from uncured hot melt moisture-cured polyurethane does not appear. Therefore, the process passability is also excellent.
  • the melt viscosity of the first hot melt moisture-curing polyurethane is higher than the melt viscosity of the second hot melt moisture-curing polyurethane, and further, the first hot melt
  • the melt viscosity of the moisture-curing polyurethane is preferably 1.5 to 2 times the melt viscosity of the second hot-melt moisture-curing polyurethane.
  • first hot-melt type moisture-curing polyurethane and / or the second hot-melt type moisture-curing polyurethane contains a foaming agent
  • an elastic polyurethane layer used as an intermediate layer can be easily formed. Can be formed.
  • the leather-like sheet obtained by any one of the above production methods is a second polyurethane layer formed from the first polyurethane layer formed from the first hot melt type moisture cured polyurethane and the second hot melt type moisture cured polyurethane.
  • the polyurethane layer can maintain high adhesion and unity. For this reason, the obtained leather-like sheet has fine creases and is excellent in uniform appearance and texture.
  • a method for producing a leather-like sheet that can sufficiently enhance the peel strength at the interface between two polyurethane laminates formed from hot-melt moisture-cured polyurethane.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Dispersion Chemistry (AREA)
  • Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)

Abstract

La présente invention concerne un procédé de production de feuille de similicuir caractérisé en ce qu'il comprend: une première étape d'application dans laquelle on applique sur la surface d'une première feuille un premier polyuréthane chaud fondu et durcissant à l'humidité; une deuxième étape d'application dans laquelle on applique sur cette surface un deuxième polyuréthane chaud fondu et durcissant à l'humidité dans un état dans lequel ledit premier polyuréthane chaud fondu et durcissant à l'humidité qui a été appliqué a été fondu et ramolli; et une étape de collage dans laquelle une deuxième feuille est collée sur cette surface dans un état dans lequel ledit deuxième polyuréthane chaud fondu et durcissant à l'humidité qui a été appliqué a été fondu et ramolli.
PCT/JP2009/070990 2008-12-24 2009-12-16 Feuille de similicuir, et procédé de production correspondant Ceased WO2010073949A1 (fr)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014527480A (ja) * 2011-07-29 2014-10-16 スリーエム イノベイティブ プロパティズ カンパニー 少なくとも１つの薄層を有する多層フィルム及びこのようなフィルムを製造するための連続プロセス
JP2015120323A (ja) * 2013-12-25 2015-07-02 Dic株式会社 積層体及びその製造方法
JP6485726B1 (ja) * 2017-09-25 2019-03-20 Dic株式会社 合成皮革の製造方法
WO2019058804A1 (fr) * 2017-09-25 2019-03-28 Dic株式会社 Procédé de fabrication de cuir artificiel
CN112373075A (zh) * 2020-09-19 2021-02-19 江苏惠沣环保科技有限公司 一种零voc气体挥发的热熔胶膜制备工艺及装置
EP3645784B1 (fr) * 2017-06-27 2023-10-18 F.D.S. Procédé de réalisation en continu d'un motif a la surface d'un substrat souple

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013040765A1 (fr) * 2011-09-21 2013-03-28 Basf Se Cuir artificiel présentant propriétés de résistance à la flexion améliorées
KR101855924B1 (ko) * 2017-11-24 2018-05-09 주식회사 에스앤비 습기 경화형 폴리우레탄 핫멜트를 이용한 자동차 시트 제조 장치 및 방법
IT201800009667A1 (it) * 2018-10-22 2020-04-22 Nuova Accoppiatura Srl Macchina e impianto per la nobilitazione delle pelli e relativo procedimento di nobilitazione
CN110670370A (zh) * 2019-11-06 2020-01-10 山东同大海岛新材料股份有限公司 仿真皮超纤革的制备方法、仿真皮超纤革及仿真皮产品

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0949162A (ja) * 1995-08-04 1997-02-18 Seikoh Chem Co Ltd 伸縮性と防水性を兼ね備えた不織布およびその加工方法
JP2003020574A (ja) * 2001-07-05 2003-01-24 Unitica Fibers Ltd 透湿防水性ラミネート布帛の製造方法
WO2008065920A1 (fr) * 2006-12-01 2008-06-05 Dic Corporation Feuille de type cur

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0924590A (ja) * 1995-07-11 1997-01-28 Kuraray Co Ltd ポリウレタン層を有する積層体
JPH10278182A (ja) * 1997-04-03 1998-10-20 Kuraray Co Ltd 積層体およびその製造方法
TW393398B (en) * 1998-08-01 2000-06-11 Ind Tech Res Inst Process for producing polyurethane synthetic leather

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0949162A (ja) * 1995-08-04 1997-02-18 Seikoh Chem Co Ltd 伸縮性と防水性を兼ね備えた不織布およびその加工方法
JP2003020574A (ja) * 2001-07-05 2003-01-24 Unitica Fibers Ltd 透湿防水性ラミネート布帛の製造方法
WO2008065920A1 (fr) * 2006-12-01 2008-06-05 Dic Corporation Feuille de type cur

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014527480A (ja) * 2011-07-29 2014-10-16 スリーエム イノベイティブ プロパティズ カンパニー 少なくとも１つの薄層を有する多層フィルム及びこのようなフィルムを製造するための連続プロセス
US9914854B2 (en) 2011-07-29 2018-03-13 3M Innovative Properties Company Multilayer film having at least one thin layer and continuous process for forming such a film
JP2015120323A (ja) * 2013-12-25 2015-07-02 Dic株式会社 積層体及びその製造方法
EP3645784B1 (fr) * 2017-06-27 2023-10-18 F.D.S. Procédé de réalisation en continu d'un motif a la surface d'un substrat souple
JP6485726B1 (ja) * 2017-09-25 2019-03-20 Dic株式会社 合成皮革の製造方法
WO2019058804A1 (fr) * 2017-09-25 2019-03-28 Dic株式会社 Procédé de fabrication de cuir artificiel
CN112373075A (zh) * 2020-09-19 2021-02-19 江苏惠沣环保科技有限公司 一种零voc气体挥发的热熔胶膜制备工艺及装置

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