WO2018003459A1 - 複合シート状物およびその製造方法 - Google Patents
複合シート状物およびその製造方法 Download PDFInfo
- Publication number
- WO2018003459A1 WO2018003459A1 PCT/JP2017/021428 JP2017021428W WO2018003459A1 WO 2018003459 A1 WO2018003459 A1 WO 2018003459A1 JP 2017021428 W JP2017021428 W JP 2017021428W WO 2018003459 A1 WO2018003459 A1 WO 2018003459A1
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- WIPO (PCT)
- Prior art keywords
- woven
- sheet
- knitted fabric
- composite sheet
- flame retardant
- Prior art date
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Classifications
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0056—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the compounding ingredients of the macro-molecular coating
- D06N3/0059—Organic ingredients with special effects, e.g. oil- or water-repellent, antimicrobial, flame-resistant, magnetic, bactericidal, odour-influencing agents; perfumes
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- 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
- B32B5/22—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 the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
- B32B5/24—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 the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
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- B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- 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
- B32B5/024—Woven fabric
-
- 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
- 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
- B32B5/08—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 the fibres or filaments of a layer being of different substances, e.g. conjugate fibres, mixture of different fibres
-
- 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
- B32B5/22—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 the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
- B32B5/24—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 the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being 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
- 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
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M17/00—Producing multi-layer textile fabrics
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M17/00—Producing multi-layer textile fabrics
- D06M17/04—Producing multi-layer textile fabrics by applying synthetic resins as adhesives
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M17/00—Producing multi-layer textile fabrics
- D06M17/04—Producing multi-layer textile fabrics by applying synthetic resins as adhesives
- D06M17/08—Polyamides polyimides
-
- 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
-
- 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
- B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
- B32B2260/02—Composition of the impregnated, bonded or embedded layer
- B32B2260/021—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
- B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
- B32B2260/04—Impregnation, embedding, or binder material
- B32B2260/046—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
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/12—Conjugate fibres, e.g. core/sheath or side-by-side
-
- 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
- B32B2307/30—Properties of the layers or laminate having particular thermal properties
- B32B2307/306—Resistant to heat
- B32B2307/3065—Flame resistant or retardant, fire resistant or retardant
Definitions
- the present invention relates to a composite sheet-like material and a method for producing the same. More specifically, the present invention relates to a composite sheet-like material composed of a skin sheet and a woven or knitted fabric in which a nonwoven fabric composed of ultrafine fibers is impregnated with a polymer elastic body. In addition, the present invention relates to a composite sheet-like product that achieves both high flame retardancy and high bonding performance between a skin sheet and a woven or knitted fabric, and a method for producing the same.
- a sheet-like material mainly composed of a nonwoven fabric composed of ultrafine fibers and a polymer elastic body has excellent characteristics not found in natural leather, such as durability and high uniformity.
- the so-called suede-like artificial leather that buffs its surface to form napped fibers is used not only as a material for clothing but also in various fields such as interior materials for vehicles, materials for furniture interiors, and building materials. in use.
- suede-like artificial leather is often required to have high flame retardancy.
- a polymer elastic body such as polyurethane constituting an artificial leather, a nonwoven fabric, and a fiber constituting a woven fabric or a knitted fabric are very difficult to be flame retardant.
- halogen flame retardants have been frequently used for these flame retardants.
- halogen flame retardants have a problem that harmful halogen gas is generated during combustion. The use of is regulated.
- a resin composition containing an acrylic ester resin as a main component and containing an aromatic phosphate and a metal oxide is applied to the back surface of a suede-like artificial leather.
- a method for achieving flame retardancy has been proposed (see Patent Document 1).
- the flame-retardant resin composition applied in a large amount deteriorates the adhesiveness with the woven or knitted fabric on the back side of the sheet-like material. There was a problem that the bonding performance between the fabric and the knitted or knitted fabric was insufficient.
- an object of the present invention is a composite sheet-like product composed of a skin sheet and a woven or knitted fabric in which a nonwoven fabric composed of ultrafine fibers is impregnated with a polymer elastic body. Another object is to provide a composite sheet-like material that achieves both high bonding performance and a method for producing the same.
- the composite sheet-like product of the present invention comprises an ultrafine fiber having an average single fiber diameter of 0.1 to 10 ⁇ m and a skin sheet made of a polymer elastic body.
- a composite sheet-like product in which woven or knitted fabrics are laminated, wherein the skin sheet and the woven or knitted fabric are laminated through a resin layer containing a flame retardant and an adhesive layer. is there.
- the surface of the woven or knitted fabric that comes into contact with the adhesive layer has napped or irregularities.
- the flame retardant is a phosphorus-based and / or inorganic flame retardant.
- the adhesive is a thermoplastic resin having a softening temperature of 70 to 160 ° C.
- the thermoplastic resin is a nylon resin.
- the method for producing a composite sheet-like material of the present invention is a method for producing a composite sheet-like material comprising the following steps 1 to 3.
- a composite sheet-like material that achieves both high flame retardance performance suitable for use in vehicle interiors and the like, and high lamination performance between a skin sheet and a woven or knitted fabric, which is a toxic gas during combustion
- a composite sheet material having a dense and flexible texture can be obtained.
- the composite sheet material of the present invention is a composite sheet material obtained by laminating a skin sheet composed of ultrafine fibers having an average single fiber diameter of 0.1 to 10 ⁇ m and a polymer elastic body, and a woven or knitted fabric.
- a woven or knitted fabric is a composite sheet-like product formed by laminating a resin layer containing a flame retardant and an adhesive layer.
- ultrafine fibers constituting the skin sheet for example, natural fibers, regenerated fibers, semi-synthetic fibers, synthetic fibers, and the like can be used.
- synthetic fibers are preferable from the viewpoint of excellent durability, particularly mechanical strength, heat resistance, and light resistance, and polyester fibers are particularly preferably used.
- the polymers forming the ultrafine fibers include inorganic particles such as titanium oxide particles, lubricants, pigments, heat stabilizers, ultraviolet absorbers, conductive agents, depending on various purposes.
- An agent, a heat storage agent, an antibacterial agent, and the like can be added.
- the average single fiber diameter of the ultrafine fibers is 0.1 to 10 ⁇ m. By setting the average single fiber diameter to 10 ⁇ m or less, a sheet-like product having a dense and soft touch surface quality can be obtained. On the other hand, when the average single fiber diameter is 0.1 ⁇ m or more, an effect excellent in coloring property and fastness after dyeing is exhibited.
- the average single fiber diameter of the ultrafine fibers is preferably 1 ⁇ m or more and 6 ⁇ m or less, and more preferably 1.5 ⁇ m or more and 4 ⁇ m or less.
- the cross-sectional shape of the ultrafine fiber is preferably a round cross-section from the viewpoint of processing operability, but is a polygon such as an ellipse, a flat shape and a triangle, a sector shape and a cross shape, a hollow shape, a Y shape, and a T shape. Also, a U-shaped or other irregular cross-section can be adopted.
- the ultrafine fibers are in the form of a nonwoven fabric (sometimes referred to as an ultrafine fiber web) in a sheet-like material.
- a nonwoven fabric sometimes referred to as an ultrafine fiber web
- a uniform and elegant appearance and texture can be obtained when the surface is raised.
- the form of the non-woven fabric may be either a long-fiber non-woven fabric or a short-fiber non-woven fabric, but it is preferably a short-fiber non-woven fabric because an elegant appearance is easily obtained.
- the average fiber length of the ultrafine fibers when using the short fiber nonwoven fabric is preferably 25 to 90 mm. By setting the average fiber length to 90 mm or less, good quality and texture can be obtained, and by setting the average fiber length to 25 mm or more, a sheet-like material having excellent wear resistance can be obtained.
- the average fiber length is more preferably 35 to 80 mm, still more preferably 40 to 70 mm.
- the polymer elastic body constituting the skin sheet used in the present invention is a binder that holds the ultrafine fibers constituting the skin sheet. Therefore, considering the soft texture of the composite sheet-like material of the present invention, examples of the polymer elastic body include polyurethane, SBR, NBR, and acrylic resin. Among these, it is preferable to use polyurethane as a main component. By using polyurethane, it is possible to obtain a composite sheet-like product having a tactile sensation with a sense of fullness, a leather-like appearance, and physical properties that can withstand actual use. Moreover, the main component here means that the mass of polyurethane is more than 50 mass% with respect to the mass of the whole polymer elastic body.
- polyurethane in the present invention, either an organic solvent-based polyurethane used in a state dissolved in an organic solvent or a water-dispersed polyurethane used in a state dispersed in water can be employed.
- a polyurethane obtained by a reaction of a polymer diol, an organic diisocyanate and a chain extender is preferably used.
- an internal emulsifier in order to disperse the polyurethane in water.
- the internal emulsifier include cationic internal emulsifiers such as quaternary amine salts, anionic internal emulsifiers such as sulfonates and carboxylates, and nonionic internal emulsifiers such as polyethylene glycol. Further, any combination of a cationic and nonionic internal emulsifier and a combination of an anionic and nonionic internal emulsifier can be employed.
- the polymer elastic body includes various additives, for example, pigments such as carbon black, flame retardants such as phosphorus, halogen and inorganic, antioxidants such as phenol, sulfur and phosphorus, benzoate UV absorbers such as triazoles, benzophenones, salicylates, cyanoacrylates and oxalic anilides, light stabilizers such as hindered amines and benzoates, hydrolysis stabilizers such as polycarbodiimides, plasticizers, electric resistance An inhibitor, a surfactant, a coagulation adjusting agent, a dye, and the like can be contained.
- pigments such as carbon black
- flame retardants such as phosphorus, halogen and inorganic
- antioxidants such as phenol, sulfur and phosphorus
- benzoate UV absorbers such as triazoles, benzophenones, salicylates, cyanoacrylates and oxalic anilides
- light stabilizers such as hindered amines and benzoates
- the content of the polymer elastic body in the skin sheet can be appropriately adjusted in consideration of the type of the polymer elastic body to be used, the method for producing the polymer elastic body, the texture and physical properties.
- the content of the polymer elastic body is preferably 10% by mass or more and 60% by mass or less, more preferably 15% by mass or more and 45% by mass or less, and still more preferably 20% by mass or more with respect to the mass of the skin sheet. 30% by mass or less.
- the content of the polymer elastic body is less than 10% by mass, the bond between the fibers due to the polymer elastic body becomes weak and the wear resistance of the skin sheet tends to be inferior.
- content of a polymeric elastic body exceeds 60 mass%, there exists a tendency for the texture of a skin sheet to become hard.
- the thickness of the skin sheet is preferably 0.2 to 1 mm, more preferably 0.3 to 0.9 mm, and still more preferably 0.4 to 0.8 mm.
- the thickness of the skin sheet is smaller than 0.2 mm, the workability at the time of production and when pasting with a woven or knitted fabric described later is deteriorated, and when the thickness is larger than 1 mm, the flexibility of the composite sheet-like material tends to be impaired.
- the surface has napping.
- the napped form in the case of having napped on the surface has napped length and directional flexibility to the extent that a so-called finger mark is generated, leaving a mark when the napped direction changes when traced with a finger from the viewpoint of design effect It is preferable.
- weft knitting represented by warp knitting and tricot knitting, lace knitting, and various knittings based on these knitting methods, or plain weaving, twill weaving, satin weaving and their weaving methods
- plain weaving, twill weaving, satin weaving and their weaving methods Any of various woven fabrics based on the above can be adopted, but it is preferable to use a knitted fabric having high air permeability and stretchability.
- filament yarn for example, filament yarn, spun yarn, and blended yarn of filament and short fiber can be used.
- the density of the woven or knitted fabric is preferably 0.3 to 0.6 g / cm 3 , more preferably 0.4 to 0.55 g / cm 3 .
- the density of the woven or knitted fabric is smaller than 0.3 g / cm 3 , the strength is insufficient with respect to compression in the thickness direction, and when the density is larger than 0.6 g / cm 3 , the air permeability of the entire composite sheet tends to be lowered. .
- the thickness of the woven or knitted fabric is preferably 0.1 to 2 mm, more preferably 0.3 to 1.5 mm, and still more preferably 0.4 to 1 mm.
- the thickness of the knitted or knitted fabric is less than 0.1 mm, the workability at the time of pasting with the above-described skin sheet is deteriorated, and when the thickness is greater than 2 mm, the flexibility of the composite sheet-like product tends to be impaired.
- the woven or knitted fabric used for the composite sheet-like product of the present invention is preferably a napped surface on the surface to be bonded to the skin sheet.
- the napping enters the inside of the adhesive layer, thereby dramatically improving the adhesion between the skin sheet and the woven or knitting. Can do.
- the napped length of the woven or knitted fabric is 300 ⁇ m or less, because if the napped length is too long, the adhesive cannot be uniformly applied and the adhesion to the skin sheet is lowered. Preferably, it is 200 ⁇ m or less. Further, if the napped length is too short, the anchor effect due to the napped being embedded in the adhesive is reduced. Therefore, the napped length is preferably 10 ⁇ m or more, and more preferably 50 ⁇ m or more.
- the height difference between the recesses and the protrusions is preferably 150 ⁇ m or less, more preferably because the smoothness of the composite sheet surface is impaired if it is too high. 100 ⁇ m or less. If the height difference is too low, the anchor effect due to the embedding of the convex portion in the adhesive is diminished. Therefore, the height difference between the concave portion and the convex portion is preferably 10 ⁇ m or more, more preferably 50 ⁇ m or more. .
- the composite sheet-like material of the present invention comprises a resin layer containing a flame retardant and an adhesive layer between the skin sheet and the woven or knitted fabric.
- a phosphorus-based and / or inorganic flame retardant that does not generate harmful substances during combustion is preferably used.
- phosphorus flame retardants include polyphosphates such as ammonium polyphosphate (for example, Exflam APP204 (manufactured by Wellchem), Exolit AP462 (manufactured by Clariant)), nitrogen-containing organic phosphates such as guanidine phosphate (for example, Bigol No.
- polyphosphates such as ammonium polyphosphate (for example, Exflam APP204 (manufactured by Wellchem), Exolit AP462 (manufactured by Clariant)), nitrogen-containing organic phosphates such as guanidine phosphate (for example, Bigol No.
- aromatic phosphate esters such as triphenyl phosphate and trixylenyl phosphate (for example, TPP (manufactured by Daihachi Kogyo Co., Ltd.)
- TPP trixylenyl phosphate
- known flame retardants such as aluminum hydroxide, titanium oxide, zinc oxide, expansive graphite, magnesium hydroxide, calcium carbonate, zinc borate, ammonium polyphosphate, and red phosphorus can be used.
- the ratio of the flame retardant component to the resin containing the flame retardant is preferably 50 to 95% by mass, more preferably 60 to 90% by mass.
- the ratio of the flame retardant component is less than 50% by mass, a large amount of the flame retardant processing agent is applied to the composite sheet, which tends to be disadvantageous in terms of economy.
- the ratio of a flame retardant component exceeds 95 mass%, there exists a tendency for the form stability to a composite sheet-like thing to become scarce.
- the resin containing a flame retardant is preferably a binder resin in addition to the above flame retardant.
- the binder resin include an acrylic resin, a urethane resin, a polyester resin, and a vinyl acetate resin, and an acrylic resin is preferably used from the viewpoint of adhesiveness and heat resistance.
- the ratio of the binder resin to the resin containing the flame retardant is preferably in the range of 5 to 50% by mass, more preferably 10 to 40% by mass.
- the ratio of the binder resin is less than 5% by mass, the flame retardant component tends to fall off from the sheet.
- the ratio of binder resin exceeds 50 mass%, there exists a tendency for the texture of a composite sheet-like thing to be impaired.
- Thickeners for improving stability over time and production workability, and softening agents such as liquid paraffin and polyethylene glycol can be added to the resin containing the flame retardant.
- polyvinyl alcohol methyl cellulose, carboxymethyl cellulose, alkali thickened acrylic resin, ethylene oxide higher fatty acid ester, and the like can be used.
- flame retardant aids such as aluminum hydroxide, magnesium hydroxide and metal oxides can also be used.
- the amount of resin containing a flame retardant is within a range that does not impair the soft texture of the composite sheet and exhibits good flame retardancy. Is preferably 10 to 40% by mass, more preferably 15 to 30% by mass.
- thermoplastic resins such as polyester resin, copolymer polyester resin, nylon resin, and acrylic resin
- moisture curable resins such as silicone rubber, polystyrene rubber, and polyurethane resin.
- An excellent thermoplastic resin is preferable, and among them, a nylon resin excellent in hydrolysis resistance is preferably used.
- the thickness of the adhesive layer is preferably 1 to 100 ⁇ m as long as it has sufficient adhesion and does not impair the soft texture of the composite sheet.
- the softening temperature of the thermoplastic resin is preferably 70 to 160 ° C., more preferably 80 to 120 ° C. If the softening temperature is lower than 70 ° C., it may be softened during processing or actual use, and if the softening temperature is higher than 160 ° C., the texture of the skin sheet may be impaired by the softening treatment at the time of bonding.
- the method for producing a composite sheet-like product of the present invention is characterized by including the following steps 1 to 3.
- step 1 a resin containing a flame retardant is applied to a skin sheet made of ultrafine fibers having an average single fiber diameter of 0.1 to 10 ⁇ m and a polymer elastic body.
- ultrafine fiber expression type fibers As a means for obtaining ultrafine fibers constituting the above-described skin sheet, it is preferable to use ultrafine fiber expression type fibers. After the ultrafine fiber expression type fiber is entangled in advance to obtain a nonwoven fabric, the nonwoven fabric formed by entanglement of the ultrafine fiber bundle can be obtained by ultrafinening the fibers.
- ultrafine fiber expression type fiber two component thermoplastic resins having different solvent solubility are used as a sea component and an island component, and the sea component is dissolved and removed using a solvent to make the island component an ultrafine fiber.
- Adopt peel-type composite fiber that splits the sea-island type composite fiber or two-component thermoplastic resin into ultrafine fibers by alternately arranging the fiber cross-sections radially or in layers and separating and separating each component. Can do.
- the sea-island type composite fiber can provide an appropriate gap between the island components, that is, between the ultrafine fibers inside the fiber bundle, by removing the sea component.
- the sea-island type composite fiber can provide an appropriate gap between the island components, that is, between the ultrafine fibers inside the fiber bundle, by removing the sea component.
- sea-island type composite fiber a sea-island type compound base is used, and a method using a polymer inter-array in which the sea component and the island component are mutually aligned and spun, and the sea component and the island component are mixed.
- sea-island type composite fibers by a method using a polymer mutual array are preferably used.
- both a short fiber nonwoven fabric and a long fiber nonwoven fabric are used.
- the number of fibers facing the thickness direction of the sheet-like material is larger than that of the long fiber nonwoven fabric, and napping is performed. A high denseness can be obtained on the surface of the sheet-like material.
- the obtained ultrafine fiber-expressing fiber is preferably crimped and cut into a predetermined length to obtain raw cotton.
- a known method can be used for crimping or cutting.
- the obtained raw cotton is made into a fiber web with a cross wrapper or the like and entangled to obtain a nonwoven fabric.
- a needle punch, a water jet punch, or the like can be used as a method for obtaining a nonwoven fabric by entanglement of a fiber web.
- the non-woven fabric is subjected to a heat shrink treatment by hot water or steam treatment in order to improve the fineness of the fibers.
- the non-woven fabric can be impregnated with an aqueous solution of a water-soluble resin and dried to give the water-soluble resin.
- a water-soluble resin By applying a water-soluble resin to the nonwoven fabric, the fibers are fixed and the dimensional stability is improved.
- the obtained non-woven fabric is treated with a solvent to develop ultrafine fibers having an average single fiber diameter of 0.1 to 10 ⁇ m.
- the expression treatment of ultrafine fibers can be performed by immersing a nonwoven fabric made of sea-island composite fibers in a solvent to dissolve and remove sea components.
- the ultrafine fiber-expressing fiber is a sea-island type composite fiber
- the solvent for dissolving and removing the sea component when the sea component is polyethylene, polypropylene, and polystyrene, an organic solvent such as toluene or trichloroethylene can be used. Further, when the sea component is a copolyester or polylactic acid, an aqueous alkali solution such as sodium hydroxide can be used. When the sea component is a water-soluble thermoplastic polyvinyl alcohol resin, hot water can be used.
- the nonwoven fabric is impregnated with a solvent solution of a polymer elastic body and solidified to give a polymer elastic body.
- a method for fixing the polymer elastic body to the nonwoven fabric there is a method of impregnating a sheet (nonwoven fabric) with a solution of the polymer elastic body and performing wet coagulation or dry coagulation, which is appropriately selected depending on the type of the polymer elastic body to be used. Can do.
- the sheet-like material provided with the polymer elastic body can be cut in half in the thickness direction.
- the sheet-like material provided with the polymer elastic body may or may not be half cut in the thickness direction, but is preferably half cut from the viewpoint of production efficiency.
- Raising treatment can be performed on the surface of the sheet-like material provided with the polymer elastic body or the semi-cut sheet-like material.
- the raising treatment can be performed by a grinding method using sandpaper or a roll sander.
- a lubricant such as a silicone emulsion can be applied before the raising treatment.
- applying an antistatic agent before the raising treatment is a preferable embodiment because grinding powder generated from the sheet-like material by grinding becomes difficult to deposit on the sandpaper.
- the above skin sheet can be dyed as necessary.
- the dyeing process include immersion dyeing such as liquid dyeing using a jigger dyeing machine or liquid dyeing machine, thermosol dyeing using a continuous dyeing machine, roller printing, screen printing, ink jet printing, sublimation, and the like.
- immersion dyeing such as liquid dyeing using a jigger dyeing machine or liquid dyeing machine
- thermosol dyeing using a continuous dyeing machine
- roller printing screen printing, ink jet printing, sublimation, and the like.
- a printing process on a napped surface by printing, vacuum sublimation printing, or the like can be used.
- various resin finishing processes can be performed after dyeing.
- the above-mentioned skin sheet can be given a design property on the surface as necessary.
- post-processing such as drilling such as perforation, embossing, laser processing, pin sonic processing, and print processing can be performed.
- Examples of a method for applying a resin containing a flame retardant to a skin sheet include a method using a rotary screen, a knife roll coater, a gravure roll coater, a kiss roll coater, a calendar coater, or the like.
- the resin containing the flame retardant forms a layer on the outside of the skin sheet while being permeated into the inside of the skin sheet after the resin is applied.
- the thickness of the outer layer of the skin sheet is preferably 1 to 100 ⁇ m as long as the soft texture of the composite sheet is not impaired.
- a drying method after applying a resin containing a flame retardant it can be dried using a known dryer such as a tenter dryer.
- Step 2 at least one surface of the knitted or knitted fabric is subjected to raising treatment or unevenness is imparted.
- the raising treatment can be performed by, for example, a grinding method using sandpaper or a roll sander.
- the unevenness when unevenness is imparted to at least one surface of the woven or knitted fabric, the unevenness can be imparted by, for example, pressing using an embossing roll or the like.
- step 3 the surface of the skin sheet obtained in step 1 above, which is provided with a resin containing a flame retardant, is bonded to the surface of the woven or knitted fabric obtained in step 2 with raised or uneven surfaces using an adhesive. Match.
- Application of the adhesive may be performed on the back surface of the skin sheet, that is, the surface coated with the flame retardant, and may be performed on the napped or uneven surface of the woven or knitted fabric. Or it is preferable to carry out to the surface which has an unevenness
- a predetermined amount can be applied using an apparatus such as a rotary screen, a knife roll coater, a gravure roll coater, a kiss roll coater, or a calendar coater.
- an apparatus such as a rotary screen, a knife roll coater, a gravure roll coater, a kiss roll coater, or a calendar coater.
- it is preferable to form a discontinuous adhesive layer using a rotary screen or a gravure roll coater because it has a good texture as a composite sheet.
- the discontinuous adhesive layer the composite sheet can be prevented from curing.
- Said non-continuous adhesive layer means that the part where the adhesive is present and the part where the adhesive is not present are mixed with respect to the horizontal surface of the woven or knitted fabric or skin sheet as the adhesive surface.
- the size of the dots is such that the diameter of the circumscribed circle of the dots is not less than 100 ⁇ m and not more than 1000 ⁇ m because the flexible texture of the sheet-like material is not impaired and the adhesive strength is sufficient.
- the number of dots is preferably 10 or more and 200 or less per 1 cm 2 .
- the skin sheet and the woven or knitted fabric preferably have the back surface of the skin sheet after applying the thermoplastic resin, that is, the surface coated with the flame retardant and the raised or uneven surface of the woven or knitted fabric. It can be bonded by aligning the surfaces and thermocompression bonding.
- thermocompression bonding a method such as a heat roll can be used.
- a heat roll it is preferable that the temperature of the heat roll on the woven / knitted fabric side is higher than the temperature of the heat roll on the skin sheet side.
- the roll temperature on the woven or knitted fabric side when thermocompression bonding using a heat roll is preferably 100 to 180 ° C, more preferably 120 to 160 ° C.
- the roll temperature on the woven / knitted fabric side is lower than 100 ° C., it takes time to bond, and the process load increases.
- the roll temperature on the woven / knitted fabric side is higher than 180 ° C., the texture of the composite sheet becomes coarse.
- the roll temperature on the skin sheet side is preferably 100 ° C. or lower so as not to impair the quality of the skin sheet.
- the composite sheet-like material of the present invention achieves both high flame retardancy and bonding performance between the skin sheet and the woven or knitted fabric, and is used not only as a material for clothing but also as a vehicle interior material, a furniture interior material, and an architecture. Although it can be used in various fields such as materials, it is suitably used in vehicle interior materials that require particularly high strength and flame retardancy.
- Average single fiber diameter The average single fiber diameter is obtained by taking a scanning electron microscope (SEM) photograph of the cross section of the skin sheet, selecting 100 circular or nearly elliptical fibers at random, measuring the single fiber diameter, and averaging the 100 fibers. It was calculated by calculating. When an extra-fine fiber having an irregular cross section was adopted, the cross-sectional area of the single fiber was first measured, and the diameter of the single fiber was calculated by calculating the diameter when the cross section was assumed to be circular.
- SEM scanning electron microscope
- thermoplastic resin It was measured based on JIS K 6863 (1994. Test method for softening point of hot melt adhesive).
- Peel strength between skin sheet and woven / knitted fabric The skin sheet is peeled off by 50 mm from one end of a composite sheet-like material having a length of 200 mm and a width of 20 mm, and the edge of the peeled skin sheet and the edge of the woven or knitted fabric are each attached to a gripping tool of a tensile tester.
- the skin sheet and the woven or knitted fabric were peeled continuously in the 180 ° direction under the condition of a tensile speed of 100 mm / min.
- the average of the strength (N) from the start of peeling until the skin sheet and the knitted fabric were completely separated was calculated as the peeling strength.
- the peel strength was measured 5 times, and the average value was taken as the peel strength of the composite sheet.
- Appearance grade of composite sheet 10 healthy adult males and 10 adult females each, with 20 as evaluators, were evaluated visually and sensory evaluation as indicated by the following ⁇ , ⁇ , and ⁇ , and the highest evaluation was defined as the appearance quality.
- Good levels in the present invention are “ ⁇ ” and “ ⁇ ”.
- ⁇ The fiber is well dispersed and has a high density.
- delta Although the dispersion state of a fiber is favorable, it is slightly inferior to a dense feeling.
- X The fiber dispersion state as a whole is very poor and the denseness is inferior.
- Texture of composite sheet 10 healthy adult males and 10 adult females, with a total of 20 as evaluators, were evaluated by sensory evaluation as shown in the following circles, triangles, and crosses, and the most frequent evaluation was used as the texture. Good levels in the present invention are “ ⁇ ” and “ ⁇ ”. ⁇ : High resilience and flexibility. ⁇ : High resilience, but slightly inflexible. X: Paper-like and hard without rebound.
- Example 1 ⁇ Manufacture of skin sheet> Using polyethylene terephthalate (PET) having an intrinsic viscosity (IV) of 0.718 as an island component, using polystyrene having an MFR of 18 as a sea component, and using a sea-island type composite base having an island number of 16 islands / hole, After spinning at a spinning temperature of 285 ° C. with an island component / sea component mass ratio of 55/45, drawing, drawing, crimping using an indentation type crimping machine, and then cutting to a length of 51 mm As a result, a raw cotton of a sea-island type composite fiber having a single fiber fineness of 3.0 dtex was obtained.
- PET polyethylene terephthalate
- IV intrinsic viscosity
- the entangled sheet obtained as described above was shrunk with hot water at a temperature of 96 ° C., and then impregnated with a 12% by mass PVA aqueous solution having a saponification degree of 88%, based on the solid fiber content.
- the sheet was squeezed with a target amount of 30% by mass and dried while migrating PVA with hot air at a temperature of 140 ° C. for 10 minutes to obtain a sheet with PVA.
- the sheet with PVA thus obtained is immersed in trichlorethylene, and squeezing and compressing with a mangle is performed 10 times to dissolve and remove sea components and compress the sheet with PVA.
- a sheet with seawater-free PVA formed by entanglement of the provided ultrafine fiber bundle was obtained.
- the compressed sea sheet with seawater PVA obtained as described above was impregnated with a DMF solution of polyurethane whose solid content concentration was adjusted to 12% by mass, and squeezed at a target weight of 30% by mass with respect to the fiber content of the solid content.
- the polyurethane was coagulated in an aqueous solution having a concentration of 30% by mass. Thereafter, PVA and DMF were removed with hot water and dried with hot air at a temperature of 120 ° C. for 10 minutes to obtain a sheet with polyurethane having a thickness of 1.7 mm.
- the sheet with polyurethane obtained as described above was cut in half in the thickness direction and then ground with an endless sandpaper to obtain a napped sheet having a thickness of 0.46 mm.
- the napped sheet obtained as described above is dyed black under a temperature condition of 120 ° C. using a liquid dyeing machine, dried using a dryer, and the average single fiber diameter of the ultrafine fibers was 3.1 ⁇ m, the basis weight was 170 g / m 2 , and a skin sheet having a thickness of 0.5 mm was obtained.
- a flame retardant processing agent containing 70% by mass of silicon oxide-based resin-treated ammonium polyphosphate (Wellchem, phosphorus content 28%, nitrogen content 14%) is applied to one surface of the above skin sheet, A coating process is performed using a screen coater, and then a drying treatment is performed at a temperature of 100 ° C. for 7 minutes.
- the dry adhesion amount of the resin containing the flame retardant with respect to the mass of the skin sheet is 25% by mass.
- a skin sheet containing a flame retardant was obtained.
- the fabric side is 150 ° C.
- a composite sheet material having a basis weight of 440 g / m 2 and a thickness of 1.1 mm was obtained.
- the obtained composite sheet-like material had good surface quality and a soft texture, and had both high flame retardancy and high bonding performance. The results are shown in Table 1.
- Example 2 ⁇ Manufacture of skin sheets-Application of flame retardant finishing agent>
- a skin sheet containing a flame retardant was obtained.
- ⁇ Manufacture of woven and knitted fabric> Using an embossing roll in which a 170 g / m 2 satin weave obtained in the same manner as in Example 1 was dyed in black and an uneven pattern having a depth of 200 ⁇ m and a width of 100 ⁇ m between the uneven surfaces was applied, The roll temperature was set to 160 ° C., the temperature of the receiving roll was set to 150 ° C. to give unevenness, and a knitted fabric having unevenness with a protrusion thickness of 0.64 mm and a basis weight of 220 g / m 2 was obtained.
- a composite sheet material having a basis weight of 450 g / m 2 and a thickness of 1.1 mm was obtained in the same manner as in Example 1 except that the woven fabric having the unevenness was used.
- the obtained composite sheet-like material had a good surface quality and a soft texture, and also had high flame resistance and high bonding performance. The results are shown in Table 1.
- Example 3 Manufacture of skin sheets-Application of flame retardant finishing agent> In the same manner as Example 1, a skin sheet containing a flame retardant was obtained.
- a knitted fabric having a convex part thickness of 0.64 mm and a basis weight of 220 g / m 2 was obtained in the same manner as in Example 1 except that one surface was not raised.
- a composite sheet-like material having a basis weight of 450 g / m 2 and a thickness of 1.1 mm was obtained in the same manner as in Example 1 except that the above woven fabric was used.
- the obtained composite sheet-like material had a good surface quality and a flexible texture, and also had high flame retardancy and high bonding performance. The results are shown in Table 1.
- Example 4 ⁇ Manufacture of skin sheet> A skin sheet having a diameter of 3.1 ⁇ m, a basis weight of 170 g / m 2 and a thickness of 0.5 mm was obtained.
- a skin sheet containing a flame retardant was obtained in the same manner as in Example 1 except that an inorganic flame retardant containing aluminum hydroxide was used as the flame retardant component.
- a composite sheet-like material having a basis weight of 440 g / m 2 and a thickness of 1.1 mm was obtained in the same manner as in Example 1 except that the skin sheet containing the flame retardant was used.
- the obtained composite sheet-like material had a good surface quality and a flexible texture, and also had high flame retardancy and high bonding performance. The results are shown in Table 1.
- Example 5 ⁇ Manufacture of skin sheet> In the same manner as in Example 1, a skin sheet having an average single fiber diameter of 3.1 ⁇ m, a basis weight of 170 g / m 2 and a thickness of 0.5 mm was obtained.
- a skin sheet containing a flame retardant was obtained in the same manner as in Example 1 except that a halogen-based flame retardant containing decabromodiphenyl ether was used as the flame retardant component.
- a composite sheet-like material having a basis weight of 440 g / m 2 and a thickness of 1.1 mm was obtained in the same manner as in Example 1 except that the skin sheet containing the flame retardant was used.
- the obtained composite sheet has a good surface quality and a soft texture, and although toxic halogen gas is generated during combustion, it has high flame retardancy and high bonding performance.
- the results are shown in Table 1.
- Example 6 ⁇ Manufacture of skin sheet> Using polyethylene terephthalate (PET) with an intrinsic viscosity (IV) of 0.718 as the island component, polystyrene with an MFR of 18 as the sea component, and using a sea-island type composite base with 16 islands / hole. , Melt spinning with an island component / sea component mass ratio of 80/20 at a spinning temperature of 285 ° C., then drawing, crimping using an indentation type crimping machine, and then cutting to a length of 51 mm As a result, a sea-island composite fiber raw cotton having a single fiber fineness of 3.8 dtex was obtained.
- PET polyethylene terephthalate
- IV intrinsic viscosity
- Example 2 Except having used said raw cotton, it carried out similarly to Example 1, and obtained the skin sheet whose average single fiber diameter of an ultrafine fiber is 4.4 micrometers, the fabric weight is 170 g / m ⁇ 2 >, and thickness is 0.5 mm. .
- Example 1 ⁇ Applying flame retardant finishing agent-Bonding skin sheet and woven / knitted fabric> A composite sheet material having a basis weight of 440 g / m 2 and a thickness of 1.1 mm was obtained in the same manner as in Example 1 except that the above skin sheet was used. Although the obtained composite sheet-like material was slightly inferior to Example 1, it had good surface quality and flexible texture, and both high flame retardance performance and high bonding performance were compatible. The results are shown in Table 1.
- Example 7 ⁇ Manufacture of skin sheet> Polyethylene terephthalate (PET) having an intrinsic viscosity (IV) of 0.718 is used as the island component, polystyrene having an MFR of 18 is used as the sea component, and a sea-island type composite base having 100 islands / hole is used.
- the melt temperature is 285 ° C.
- the island component / sea component mass ratio is 30/70
- the film is stretched and subjected to crimping using a push-type crimper. Cut to obtain raw cotton of sea-island type composite fiber having a single fiber fineness of 2.5 dtex.
- Example 2 Except having used said raw cotton, it carried out similarly to Example 1, and obtained the skin sheet whose average single fiber diameter of an ultrafine fiber is 0.8 micrometer, a fabric weight is 170 g / m ⁇ 2 >, and thickness is 0.5 mm. .
- a composite sheet material having a basis weight of 440 g / m 2 and a thickness of 1.1 mm was obtained in the same manner as in Example 1 except that the above skin sheet was used.
- the obtained composite sheet-like material had good surface quality and a soft texture, and had both high flame retardancy and high bonding performance. The results are shown in Table 1.
- Example 8 ⁇ Manufacture of skin sheet>
- the island component polyethylene terephthalate (PET) having an intrinsic viscosity (IV) of 0.718 is used
- the sea component polystyrene having an MFR of 18 is used, and a sea-island type composite base having 8 islands / hole is used.
- the film is stretched and crimped using an indentation type crimper, and then cut to a length of 51 mm.
- a raw cotton of sea-island type composite fiber having a single fiber fineness of 5.4 dtex was obtained.
- Example 2 Except having used said raw cotton, it carried out similarly to Example 1, and obtained the skin sheet whose average single fiber diameter of an ultrafine fiber is 7.5 micrometers, and a fabric weight is 170 g / m ⁇ 2 >.
- Example 2 ⁇ Applying flame retardant finishing agent-Bonding skin sheet and woven / knitted fabric> A composite sheet material having a basis weight of 440 g / m 2 and a thickness of 1.1 mm was obtained in the same manner as in Example 1 except that the above skin sheet was used. Although the obtained composite sheet-like material was slightly inferior to Example 1, it had good surface quality and flexible texture, and both high flame retardance performance and high bonding performance were compatible. The results are shown in Table 2.
- Example 9 Manufacture of skin sheet to woven / knitted fabric> In the same manner as in Example 1, a skin sheet containing a flame retardant and a knitted fabric having nappings were obtained.
- Example 10 Manufacture of skin sheet to woven / knitted fabric> In the same manner as in Example 1, a skin sheet containing a flame retardant and a knitted fabric having nappings were obtained.
- Example 11 Manufacture of skin sheet to woven / knitted fabric> In the same manner as in Example 3, a skin sheet and a knitted fabric containing a flame retardant were obtained.
- a laminated sheet material having a basis weight of 400 g / m 2 and a thickness of 1.0 mm was obtained in the same manner as in Example 1 except that the flame retardant was not applied to the back surface of the skin sheet.
- the flame retardant finish obtained in the same manner as in Example 1 is applied to the back side (surface on the knitted side) of the above-mentioned laminated sheet-like material in the same amount as Example 1 using a screen coater. perform coating processing to be applied to, then 7 minutes at a temperature of 100 ° C., by performing a drying treatment, weight per unit area at 440 g / m 2, a thickness to obtain a composite sheet of 1.1 mm.
- the obtained composite sheet-like material had a good surface quality and a soft texture, and had a high bonding performance, but was completely burned during the combustion test and was inferior in flame retardancy. The results are shown in Table 2.
- ⁇ Applying flame retardant finishing agent> Uses a phosphorus flame retardant (manufactured by Daikyo Chemical Co., Ltd.) mainly composed of guanidine phosphate as the flame retardant finishing agent. A skin sheet containing a flame retardant was obtained.
- a composite sheet-like material having a basis weight of 440 g / m 2 and a thickness of 1.1 mm was obtained in the same manner as in Example 1 except that the skin sheet containing the flame retardant was used.
- the obtained composite sheet-like material had a soft texture and had high flame resistance and high bonding performance, but had stickiness and poor surface quality. The results are shown in Table 2.
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
- Laminated Bodies (AREA)
Abstract
Description
1.平均単繊維直径が0.1~10μmの極細繊維と高分子弾性体からなる表皮シートに難燃剤を含有する樹脂を付与する工程。
2.織編物の少なくとも1方の面を起毛または凹凸を付与する工程。
3.上記1の工程で得られた表皮シートの難燃剤を含有する樹脂を付与した面と、上記2の工程で得られた織編物の立毛または凹凸を有する面とを接着剤により貼り合わせる工程。
1.平均単繊維径が0.1~10μmの極細繊維と高分子弾性体からなる表皮シートに難燃剤を含有する樹脂を付与する工程。
2.織編物の少なくとも1方の面を起毛、または凹凸を付与する工程。
3.上記1の工程で得られた表皮シートの難燃剤を含有する樹脂を付与した面と、上記2の工程で得られた織編物の立毛または凹凸を有する面とを接着剤により貼り合わせる工程。
(1)平均単繊維直径:
平均単繊維直径は、表皮シート断面の走査型電子顕微鏡(SEM)写真を撮影し、円形または円形に近い楕円形の繊維をランダムに100本選び、単繊維直径を測定して100本の平均値を計算することにより算出した。異型断面の極細繊維を採用した場合には、まず単繊維の断面積を測定し、当該断面を円形と見立てた場合の直径を算出することによって単繊維の直径を求めた。
JIS K 6863(1994.ホットメルト接着剤の軟化点試験方法)に基づき、測定した。
FMVSS(米国連邦自動車安全基準)No.302の自動車内装材燃焼試験規格に基づいて水平燃焼速度を測定し、次の判定基準により難燃性能を評価した。
・A標線に達する前に自消した場合、判定区分を「A標線内自消」とし、合格とした。
・A標線を越えて自消した場合であって、燃焼距離が50mm以内であり、且つ燃焼時間が60秒以内の場合、判定区分を「自消」とし、合格とした。
・自消しないが、標線間の燃焼速度が4インチ/分(約101.6mm/分)以下である場合、判定区分を「規定速度以下の燃焼」とし、合格とした。
・自消せず、標線間の燃焼速度が4インチ/分(約101.6mm/分)を超える場合、判定区分を「規定速度を超える燃焼」とし、不合格とした。
前記の試験(3)時に発生したガスを、ガステック(株)製の気体採取器GV-100を用いて捕集し、同社製の未知ガス定性用検知管ポリテックNo.107を使用して測定し、検知基準以上の検出がみられた場合、有毒ガスの発生有とした。
長さ200mm、幅20mmの複合シート状物の試料の一端から、表皮シートを50mmだけ剥がし、剥がされた表皮シートの端部と織編物の端部を、それぞれ引張試験機のつかみ具に装着させ、引張速度100mm/分の条件で180°方向に連続的に表皮シートと織編物を剥がした。剥離が開始されてから表皮シートと織編物が完全に乖離するまでの強力(N)の平均を、剥離強度として算出した。剥離強度の測定を5回行いその平均値を、複合シート状物の剥離強度とした。
健康な成人男性と成人女性各10名ずつ、計20名を評価者として、目視と官能評価によって、下記の○、△および×のように評価し、最も多かった評価を外観品位とした。本発明において良好なレベルは、「○」と「△」である。
○:繊維の分散状態が良好で、高い緻密感を有する。
△:繊維の分散状態は良好であるが、やや緻密感に劣る。
×:全体的に繊維の分散状態が非常に悪く、また、緻密感に劣る。
健康な成人男性と成人女性各10名ずつ、計20名を評価者として、官能評価によって、下記の○、△および×のように評価し、最も多かった評価を風合いとした。本発明において良好なレベルは、「○」と「△」である。
○:高い反発感と、柔軟性を備えている。
△:高い反発感を有するが、やや柔軟性に劣る。
×:反発感が無くペーパーライクで、硬い。
・PU:ポリウレタン
・DMF:N,N-ジメチルホルムアミド
・PET:ポリエチレンテレフタレート
・PVA:ポリビニルアルコール。
<表皮シートの製造>
島成分として固有粘度(IV)が0.718のポリエチレンテレフタレート(PET)を用い、また海成分としてMFRが18のポリスチレンを用い、島数が16島/ホールの海島型複合用口金を用いて、紡糸温度が285℃で、島成分/海成分質量比率を55/45として溶融紡糸した後、延伸し、押し込み型捲縮機を用いて捲縮加工処理を施し、その後、51mmの長さにカットして単繊維繊度が3.0dtexの海島型複合繊維の原綿を得た。
難燃成分として、酸化ケイ素系樹脂処理ポリリン酸アンモニウム (Wellchem社製、リン含有量28%、窒素含有量14%)を70質量%含む難燃加工剤を、上記の表皮シートの一表面へ、スクリーンコーターを用いて塗布するコーティング加工を行い、その後、100℃の温度で7分間、乾燥処理を行って表皮シートの質量に対する難燃剤を含有する樹脂の乾燥付着量は25質量%である、難燃剤を含む表皮シートを得た。
固有粘度(IV)が0.680のポリエチレンテレフタレート(PET)を紡糸しおよび延伸した後、110デシテックス48フィラメントの複合繊維を得た。これを仮撚りした後、28ゲージのシングルトリコット機を用いて得られた170g/m2のサテン織を黒色に浸染し、一表面をエンドレスサンドペーパーで研削して厚みが0.64mmで、目付が210g/m2の立毛を有する編物を得た。
接着剤としてトルエンスルホンアミド単成分からなるナイロン樹脂(軟化温度90℃)を、グラビアロールコーターを用いて、上記の立毛を有する編物の立毛面にドット状に20g/m2塗布した後、100℃の温度の熱風で乾燥し、接着剤の付与された立毛を有する編物を得た。上記の難燃剤を含有する樹脂層を含む表皮シートの裏面(立毛面の反対側)と接着剤の付与された立毛を有する編物の接着剤の付与面とを合わせた後、織物側が150℃の温度に加熱されたヒートロールにて熱圧着することにより、目付が440g/m2で、厚みが1.1mmの複合シート状物を得た。得られた複合シート状物は、良好な表面品位と柔軟な風合いを有しており、また、高い難燃性能と高い貼り合わせ性能を両立していた。結果を表1に示す。
<表皮シートの製造~難燃剤加工剤の付与>
実施例1と同様にして、難燃剤を含む表皮シートを得た。
<織編物の製造>
実施例1と同様にして得られた170g/m2のサテン織を黒色に浸染し、一表面を深さ200μm、凹凸間の幅が100μmの凹凸模様が施されたエンボスロールを用いて、エンボスロールの温度を160℃とし、受けロールの温度を150℃として圧縮し凹凸を付与し、凸部の厚みが0.64mmで、目付が220g/m2の凹凸を有する編物を得た。
上記の凹凸を有する織物を用いたこと以外は、実施例1と同様にして、目付が450g/m2で、厚みが1.1mmの複合シート状物を得た。得られた複合シート状物は良好な表面品位と柔軟な風合いを有しており、また、高い難燃性能と高い貼り合わせ性能を有していた。結果を表1に示す。
<表皮シートの製造~難燃剤加工剤の付与>
実施例1と同様にして、難燃剤を含む表皮シートを得た。
一表面を起毛しなかったこと以外は、実施例1と同様にして、凸部の厚みが0.64mmで、目付が220g/m2の編物を得た。
上記の織物を用いたこと外は、実施例1と同様にして、目付が450g/m2で、厚みが1.1mmの複合シート状物を得た。得られた複合シート状物は、良好な表面品位と柔軟な風合いを有しており、また、高い難燃性能と高い貼り合わせ性能を有していた。結果を表1に示す。
<表皮シートの製造>直径が3.1μmで、目付が170g/m2で、厚みが0.5mmの表皮シートを得た。
難燃成分として、水酸化アルミニウムを含有する無機系難燃剤を用いたこと以外は、実施例1と同様にして、難燃剤を含む表皮シートを得た。
上記の難燃剤を含む表皮シートを用いたこと以外は、実施例1と同様にして、目付が440g/m2で、厚みが1.1mmの複合シート状物を得た。得られた複合シート状物は、良好な表面品位と柔軟な風合いを有しており、また、高い難燃性能と高い貼り合わせ性能を有していた。結果を表1に示す。
<表皮シートの製造>
実施例1と同様にして、極細繊維の平均単繊維直径が3.1μmで、目付が170g/m2で、厚みが0.5mmの表皮シートを得た。
難燃成分として、デカブロモジフェニルエーテルを含有するハロゲン系難燃剤を用いたこと以外は、実施例1と同様にして、難燃剤を含む表皮シートを得た。
上記の難燃剤を含む表皮シートを用いたこと以外は、実施例1と同様にして、目付が440g/m2で、厚みが1.1mmの複合シート状物を得た。得られた複合シート状物は、良好な表面品位と柔軟な風合いを有しており、また、燃焼時に有毒なハロゲンガスの発生が見られたものの、高い難燃性能と高い貼り合わせ性能を有していた。結果を表1に示す。
<表皮シートの製造>
島成分として、固有粘度(IV)が0.718のポリエチレンテレフタレート(PET)を用い、また海成分としてMFRが18のポリスチレンを用い、島数が16島/ホールの海島型複合用口金を用いて、紡糸温度285℃で、島成分/海成分質量比率が80/20で溶融紡糸した後、延伸し、押し込み型捲縮機を用いて捲縮加工処理を施し、その後、51mmの長さにカットして、単繊維繊度が3.8dtexの海島型複合繊維の原綿を得た。
上記の表皮シートを用いたこと以外は、実施例1と同様にして、目付が440g/m2、厚みが1.1mmの複合シート状物を得た。得られた複合シート状物は、実施例1にはやや劣るものの良好な表面品位と柔軟な風合いを有しており、また、高い難燃性能と高い貼り合わせ性能を両立していた。結果を表1に示す。
<表皮シートの製造>
島成分として、固有粘度(IV)が0.718のポリエチレンテレフタレート(PET)を用い、また海成分としてMFRが18のポリスチレンを用い、島数が100島/ホールの海島型複合用口金を用いて、紡糸温度が285℃で、島成分/海成分質量比率を30/70で溶融紡糸した後、延伸し、押し込み型捲縮機を用いて捲縮加工処理を施し、その後、51mmの長さにカットして単繊維繊度が2.5dtexの海島型複合繊維の原綿を得た。
上記の表皮シートを用いたこと以外は、実施例1と同様にして、目付が440g/m2で、厚みが1.1mmの複合シート状物を得た。得られた複合シート状物は、良好な表面品位と柔軟な風合いを有しており、また、高い難燃性能と高い貼り合わせ性能を両立していた。結果を表1に示す。
<表皮シートの製造>
島成分として、固有粘度(IV)が0.718のポリエチレンテレフタレート(PET)を用い、また海成分として、MFRが18のポリスチレンを用い、島数が8島/ホールの海島型複合用口金を用いて、紡糸温度285℃、島成分/海成分質量比率90/10で溶融紡糸した後、延伸し、押し込み型捲縮機を用いて捲縮加工処理を施し、その後、51mmの長さにカットして単繊維繊度が5.4dtexの海島型複合繊維の原綿を得た。
上記の表皮シートを用いたこと以外は、実施例1と同様にして、目付が440g/m2で、厚みが1.1mmの複合シート状物を得た。得られた複合シート状物は、実施例1にはやや劣るものの良好な表面品位と柔軟な風合いを有しており、また、高い難燃性能と高い貼り合わせ性能を両立していた。結果を、表2に示す。
<表皮シートの製造~織編物の製造>
実施例1と同様にして、難燃剤を含む表皮シートおよび立毛を有する編物を得た。
接着剤としてポリメチルメタクリレート単成分からなるアクリル樹脂(軟化点75℃)を用いたこと以外は、実施例1と同様にして、目付が440g/m2で、厚みが1.1mmの複合シート状物を得た。得られた複合シート状物は、良好な表面品位と柔軟な風合いを有しており、また、高い難燃性能と高い貼り合わせ性能を両立していた。結果を表2に示す。
<表皮シートの製造~織編物の製造>
実施例1と同様にして、難燃剤を含む表皮シートおよび立毛を有する編物を得た。
接着剤としてポリウレタン樹脂(ハイボンYA-180-1(日立化成製))を用いたこと以外は、実施例1と同様にして、目付が440g/m2で、厚みが1.1mmの複合シート状物を得た。得られた複合シート状物は、良好な表面品位と柔軟な風合いを有しており、また、高い難燃性能と高い貼り合わせ性能を両立していた。結果を表2に示す。
<表皮シートの製造~織編物の製造>
実施例3と同様にして、難燃剤を含む表皮シートおよび編物を得た。
接着剤としてポリウレタン樹脂(ハイボンYA-180-1(日立化成製))を用いたこと以外は、実施例3と同様にして、目付が440g/m2で、厚みが1.1mmの複合シート状物を得た。得られた複合シート状物は、良好な表面品位と柔軟な風合いを有しており、また、高い難燃性能と高い貼り合わせ性能を両立していた。結果を表2に示す。
<表皮シートの製造>
実施例1と同様にして、目付が170g/m2で、厚みが0.5mmの表皮シートを得た。
実施例1と同様にして、厚みが0.64mmで、目付が210g/m2の立毛を有する編物を得た。
表皮シートの裏面に難燃加工剤を付与していないこと以外は、実施例1と同様にして、目付が400g/m2で、厚みが1.0mmの積層シート状物を得た。
実施例1と同様にして得られた難燃加工剤を、上記の積層シート状物の裏面(編物側の面)に、スクリーンコーターを用いて、実施例1と同量の付量となるように塗布するコーティング加工を行い、その後、100℃の温度で7分間、乾燥処理を行って、目付が440g/m2で、厚みが1.1mmの複合シート状物を得た。得られた複合シート状物は、良好な表面品位と柔軟な風合いを有しており、高い貼り合わせ性能を有しているものの、燃焼試験時に全焼し、難燃性能に劣るものであった。結果を表2に示す。
<表皮シートの製造>
実施例1と同様にして、目付が170g/m2で、厚みが0.5mmの表皮シートを得た。
難燃加工剤として、リン酸グアニジンを主成分とするリン系難燃剤(大京化学製)を用い、難燃加工剤の付量が実施例1と同様になるようにパッド・ドライ方式で付与し難燃剤を含む表皮シートを得た。
上記の難燃剤を含む表皮シートを用いたこと以外は、実施例1と同様にして、目付が440g/m2で、厚みが1.1mmの複合シート状物を得た。得られた複合シート状物は、柔軟な風合いを有しており、また、高い難燃性能と高い貼り合わせ性能を有しているものの、ベタツキがあり、表面の品位が不良であった。結果を表2に示す。
Claims (6)
- 平均単繊維直径が0.1~10μmの極細繊維と高分子弾性体からなる表皮シートと、織編物が積層されてなる複合シート状物であって、前記表皮シートと前記織編物が、難燃剤を含有する樹脂層と接着剤層を介して積層されてなることを特徴とする複合シート状物。
- 織編物の接着剤層に接する面に立毛または凹凸を有することを特徴とする請求項1記載の複合シート状物。
- 難燃剤が、リン系および/または無機系の難燃剤であることを特徴とする請求項1または2記載の複合シート状物。
- 接着剤が軟化温度70~160℃の熱可塑性樹脂であることを特徴とする請求項1~3のいずれかに記載の複合シート状物。
- 熱可塑性樹脂がナイロン樹脂であることを特徴とする請求項4に記載の複合シート状物。
- 次の1~3の工程を含むことを特徴とする複合シート状物の製造方法。
1.平均単繊維直径が0.1~10μmの極細繊維と高分子弾性体からなる表皮シートに難燃剤を含有する樹脂を付与する工程。
2.織編物の少なくとも1方の面を起毛または凹凸を付与する工程。
3.上記1の工程で得られた表皮シートの難燃剤を含有する樹脂を付与した面と、上記2の工程で得られた織編物の立毛または凹凸を有する面とを接着剤により貼り合わせる工程。
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JP2017541719A JP6870616B2 (ja) | 2016-06-28 | 2017-06-09 | 複合シート状物およびその製造方法 |
KR1020197000868A KR102375461B1 (ko) | 2016-06-28 | 2017-06-09 | 복합 시트상물 및 그의 제조 방법 |
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WO2022065371A1 (ja) * | 2020-09-25 | 2022-03-31 | 昭和電工マテリアルズ株式会社 | 接着体の製造方法及び製造装置、並びに生地の接着方法 |
WO2022071049A1 (ja) * | 2020-09-29 | 2022-04-07 | 東レ株式会社 | 人工皮革、その製造方法および人工皮革基材 |
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CN109312532B (zh) | 2021-05-11 |
CN109312532A (zh) | 2019-02-05 |
EP3476999A4 (en) | 2020-04-15 |
TWI724193B (zh) | 2021-04-11 |
US20190210335A1 (en) | 2019-07-11 |
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