WO2014147864A1 - 樹脂コート不織布 - Google Patents
樹脂コート不織布 Download PDFInfo
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- WO2014147864A1 WO2014147864A1 PCT/JP2013/073541 JP2013073541W WO2014147864A1 WO 2014147864 A1 WO2014147864 A1 WO 2014147864A1 JP 2013073541 W JP2013073541 W JP 2013073541W WO 2014147864 A1 WO2014147864 A1 WO 2014147864A1
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- resin
- nonwoven fabric
- coated
- mass
- embossing
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
- D04H3/005—Synthetic yarns or filaments
- D04H3/009—Condensation or reaction polymers
- D04H3/011—Polyesters
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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
- D06N3/04—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 by reactions only involving carbon-to-carbon unsaturated bonds
- D06N3/042—Acrylic polymers
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
- D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
- D04H3/14—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic yarns or filaments produced by welding
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0002—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate
- D06N3/0011—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate using non-woven fabrics
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0002—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate
- D06N3/0015—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate using fibres of specified chemical or physical nature, e.g. natural silk
- D06N3/0036—Polyester fibres
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/007—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by mechanical or physical treatments
- D06N3/0077—Embossing; Pressing of the surface; Tumbling and crumbling; Cracking; Cooling; Heating, e.g. mirror finish
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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
- D06N3/04—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 by reactions only involving carbon-to-carbon unsaturated bonds
- D06N3/06—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 by reactions only involving carbon-to-carbon unsaturated bonds with polyvinylchloride or its copolymerisation products
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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
- D06N3/04—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 by reactions only involving carbon-to-carbon unsaturated bonds
- D06N3/06—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 by reactions only involving carbon-to-carbon unsaturated bonds with polyvinylchloride or its copolymerisation products
- D06N3/065—PVC together with other resins except polyurethanes
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N7/00—Flexible sheet materials not otherwise provided for, e.g. textile threads, filaments, yarns or tow, glued on macromolecular material
- D06N7/0002—Wallpaper or wall covering on textile basis
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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
- D06N2211/00—Specially adapted uses
- D06N2211/12—Decorative or sun protection articles
- D06N2211/26—Vehicles, transportation
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
- D10B2331/04—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyesters, e.g. polyethylene terephthalate [PET]
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2505/00—Industrial
- D10B2505/08—Upholstery, mattresses
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2505/00—Industrial
- D10B2505/12—Vehicles
Definitions
- the present invention relates to a sheet-like resin-coated nonwoven fabric that can be used for vehicle interior materials, wallpaper, bed members, chair members, and the like, and in particular, resin-coated nonwoven fabrics that can be welded by a high-frequency welder and have a beautiful embossed pattern. About.
- PVC leather in which polyvinyl chloride sheets are laminated on woven fabrics, knitted fabrics, nonwoven fabrics, etc. is mainly used. Since this sheet can be welded with a high-frequency welder, the labor of processing by sewing is saved, which is advantageous in terms of cost.
- the PVC leather has a problem that a warm texture cannot be obtained.
- Patent Document 1 a breathable leather in which a nonwoven fabric is impregnated with a resin
- Patent Document 1 polyvinyl acetate having a high Tg is used as the impregnation resin ( Example of Patent Document 1)
- the texture may become hard.
- the present applicant further invented a leather-like nonwoven fabric in which an acrylic resin is adhered to one side of a thermocompression bonding type high-weight spunbonded nonwoven fabric (Patent Document 2).
- the nonwoven fabric obtained by this invention has a problem that it cannot be welded by a high-frequency welder.
- Patent Documents 1 and 2 the possibility of welding with a high-frequency welder is not examined.
- Polyvinyl acetate can be welded with a high frequency welder.
- a polyvinyl acetate-impregnated nonwoven fabric has a hard texture and is not flexible. Therefore, the present invention has been made to provide a resin-coated non-woven fabric that can be welded with a high-frequency welder, has improved hardness, and has a beautiful embossed pattern.
- the present invention has solved the above problem, one side of the long-fiber nonwoven fabric of polyethylene terephthalate thermocompression bonding type having a basis weight of 50g / m 2 ⁇ 150g / m 2, the coating amount after drying at 40g / m 2 ⁇ 150g / m 2
- a resin coat layer wherein the resin coat layer contains 10% by mass to 45% by mass of a vinyl chloride unit and 30% by mass to 55% by mass of a (meth) acrylic acid ester unit; It has a feature in that it has a pattern by embossing.
- the resin coating layer preferably has at least one glass transition temperature (Tg) at 30 ° C. or lower in differential scanning calorimetry (DSC).
- Tg glass transition temperature
- DSC differential scanning calorimetry
- the long fiber nonwoven fabric is embossed, and it is desirable that the embossed surface of the long fiber nonwoven fabric is coated with the resin.
- (meth) acrylic acid ester means “acrylic acid ester and / or methacrylic acid ester”.
- a resin-coated nonwoven fabric that can be welded with a high-frequency welder, has improved hardness, has an embossed pattern, and has excellent design.
- FIG. 1-1 is a diagram showing a DSC curve of a coat layer sample collected from the resin-coated nonwoven fabric produced in Example 1.
- FIG. FIG. 1-2 is an enlarged view ( ⁇ 20 ° C. to 20 ° C.) of FIG. 1-1.
- the present inventors can weld with a high-frequency welder, have improved hardness, and can realize a clear embossed pattern, particularly a copolymer component or a polymer blend partner,
- the resin-coated nonwoven fabric obtained by the fact that the resin coated on the nonwoven fabric has a (meth) acrylic acid ester unit in addition to the vinyl chloride unit does not hinder the weldability in the high-frequency welder.
- the present invention has been completed by discovering that it can give a suppleness and can also give a clear embossed pattern.
- the present invention will be described in detail.
- Nonwoven fabric In the present invention, a polyethylene terephthalate (PET) thermocompression type long fiber nonwoven fabric is used as the nonwoven fabric to be the base material. This is because PET is excellent in properties such as mechanical strength (mechanical strength) and heat resistance. In addition, if it is 10 mass% or less, polyesters other than PET may be blended.
- the intrinsic viscosity of PET is not particularly limited, but is preferably 0.6 dl / g or more.
- the fiber diameter of the long fibers (single fibers) constituting the nonwoven fabric is preferably about 0.1 to 10 dtex, more preferably about 1 to 5 dtex. Further, in the present invention, having a basis weight used nonwoven fabric is 2 ⁇ 150g / m 2 approximately 50 g / m. Preferably, it is about 60 g / m 2 to 120 g / m 2 , more preferably 70 g / m 2 to 110 g / m 2 . If the fiber diameter and basis weight are within the above ranges, the properties such as mechanical strength, suppleness, and design can be excellent in a balanced manner.
- the spunbond nonwoven fabric is preferable because it is suitable for high-speed production and can be obtained at a low cost.
- the spunbond nonwoven fabric is bonded to the crimping ratio (area ratio of the top of the convex portion on the roll side) of about 2 to 50%.
- the crimping ratio area ratio of the top of the convex portion on the roll side
- the spunbond nonwoven fabric is embossed only on one side.
- the resin-coated nonwoven fabric of the present invention has a resin-coated layer on one side of the long-fiber nonwoven fabric.
- resin which comprises a resin coat layer it is required that it is resin containing a vinyl chloride unit and a (meth) acrylic ester unit.
- the vinyl chloride unit enables welding with a high-frequency welder, and the (meth) acrylic ester unit imparts moderate softness (flexibility) to the resin.
- the (meth) acrylic acid ester unit means a structural unit derived from a monomer having a (meth) acryloyl group.
- Monomers that give such structural units include methyl (meth) acrylate, ethyl (meth) acrylate, butyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, cyclohexyl (meth) acrylate, benzyl (meth) acrylate, And (meth) acrylates such as 2-hydroxyethyl (meth) acrylate.
- the vinyl chloride unit is contained in the resin coat layer (the total of the resin constituting the coat layer and the optional additives is 100% by mass) in an amount of 10% to 45% by mass. If it is this range, the welding by a high frequency welder is possible, and a nonwoven fabric does not become hard too much.
- a preferable range of the vinyl chloride unit content is 15% by mass to 45% by mass, and more preferably 15% by mass to 35% by mass.
- the (meth) acrylic acid ester unit is contained in the resin coating layer in an amount of 30% by mass to 55% by mass.
- the (meth) acrylic acid ester unit is increased, tack appears on the surface of the obtained resin-coated nonwoven fabric, and for example, blocking may occur when unwinding the wound resin-coated nonwoven fabric.
- the preferable range of the (meth) acrylic acid ester unit content is 30% by mass to 50% by mass, and the more preferable range is 35% by mass to 45% by mass.
- the contents of the (meth) acrylic acid ester unit and the vinyl chloride unit can be measured by NMR or the like. Moreover, you may calculate from the usage-amount of a monomer component, the compounding composition of a resin composition, and you may refer to a manufacturer's nominal value.
- a copolymer (ternary) in which the resin has a vinyl chloride unit and a (meth) acrylic acid ester unit (2)
- the resin includes a mixture of a (co) polymer having a vinyl chloride unit and a (co) polymer having a (meth) acrylic acid ester unit.
- the (co) polymer means a homopolymer or a copolymer.
- the copolymer may have other units other than the vinyl chloride unit and the (meth) acrylic acid ester unit, and as a monomer that gives such other unit, For example, ethylene; vinyl acetate; styrene; acrylonitrile; acrylic acid; methacrylic acid.
- the resin comprises (2-1) a mixture of homopoly (meth) acrylic acid ester and polyvinyl chloride; (2-2) homopoly (meth) acrylic acid ester and vinyl chloride An embodiment comprising a mixture of a copolymer containing units; (2-3) an embodiment comprising a mixture of a copolymer containing (meth) acrylic acid ester units and polyvinyl chloride; (2-4) (meth) And an embodiment including a mixture of a copolymer containing an acrylate unit and a copolymer containing a vinyl chloride unit.
- the units constituting each copolymer in (2-2) to (2-4) are monomer-derived units that give other units exemplified above.
- the resin coated on the nonwoven fabric may further include a (co) polymer that does not include any of the vinyl chloride unit and the (meth) acrylic acid ester unit. That is, the embodiment (3) is obtained by adding a (co) polymer obtained by polymerizing one or more monomers giving other units exemplified above to the embodiment (1) or (2). .
- a copolymer of ethylene and vinyl acetate is preferable as the (co) polymer containing neither a vinyl chloride unit nor a (meth) acrylic ester unit. In this copolymer, it is preferable to carry out the copolymerization so that the vinyl acetate unit is 60 mass% to 95 mass%.
- the amount of vinyl chloride units in the resin coat layer is 10% by mass to 45% by mass and the amount of (meth) acrylic acid ester units is 30% by mass to 55% by mass. .
- the resin according to the present invention preferably has at least one glass transition temperature (Tg) at 30 ° C. or lower in differential scanning calorimetry (DSC).
- the glass transition temperature means a glass transition temperature obtained from a DSC curve when an exothermic and endothermic curve (DSC curve) is measured using a differential scanning calorimeter at a heating rate of 20 ° C./min. .
- DSC curve differential scanning calorimeter
- the resin according to the present invention may have a plurality of glass transition temperatures.
- at least one of the plurality of glass transition temperatures may be 30 ° C. or less.
- the lowest glass transition temperature is preferably ⁇ 30 ° C. or higher.
- the highest glass transition temperature is preferably 80 ° C. or lower. If the glass transition temperature is too low, tackiness is exhibited, and the resin-coated nonwoven fabric may be blocked. If the glass transition temperature is too high, it may be difficult to obtain desired flexibility.
- the resin to be coated may be an organic solvent type, but is preferably an emulsion in an aqueous medium. Even when a resin is composed of a plurality of (co) polymers, a uniform resin emulsion can be easily obtained by mixing and stirring the emulsions. Moreover, the viscosity of the resulting resin emulsion (coating solution) can be kept low, and it is also environmentally friendly.
- the aqueous medium may contain, in addition to water, alcohols such as methanol, ethanol and isopropanol; ketones such as acetone; ethers such as tetrahydrofuran.
- the above-mentioned resin is coated on the nonwoven fabric so that the resin amount (nonvolatile content) is 40 g / m 2 to 150 g / m 2 . If the amount of the resin is small, the embossed pattern is not clear, and if it is too much, the texture becomes hard, which is not preferable.
- a more preferable adhesion amount is in the range of 50 g / m 2 to 120 g / m 2 , and a further preferable adhesion amount is in the range of 60 g / m 2 to 110 g / m 2 .
- the concentration of the emulsion may be adjusted.
- the resin coated on the nonwoven fabric may be present on the surface of the nonwoven fabric, or may be impregnated in the nonwoven fabric, that is, penetrated between fibers constituting the nonwoven fabric.
- a known crosslinking agent, flame retardant, wetting agent, viscosity modifier, thickener, antifoaming agent, modifier, pigment, coloring is applied to the resin (emulsion).
- Additives such as additives, fillers, anti-aging agents, UV absorbers, UV stabilizers and the like may be added within a range that does not impair the object of the present invention, and it is preferable to use them in the form of a resin composition in which they are mixed .
- the addition amount of the additives is preferably 10% by mass to 50% by mass, more preferably 15% in the resin composition (total 100% by mass of the resin, solvent, filler, flame retardant and other additives).
- the content is from mass% to 45 mass%, more preferably from 20 mass% to 40 mass%.
- the resin composition preferably contains antimony trioxide.
- the amount of antimony trioxide added is about 5% by mass to 10% by mass (when the total mass of the resin and antimony trioxide is 100% by mass).
- Method for producing resin-coated nonwoven fabric An example of the suitable manufacturing method of the resin coat nonwoven fabric of this invention is demonstrated. First, a spunbond nonwoven fabric is produced by a known method. Subsequently, as described above, pressure bonding is performed through an embossing roll. This completes the nonwoven fabric as the substrate. The embossing at this time is preferably performed at about 150 to 250 ° C.
- a resin composition is coated on at least one surface of the nonwoven fabric substrate.
- a resin coat is applied to the embossed surface side during the production of the nonwoven fabric. This is because when the resin coating is applied to the embossed surface side during the production of the nonwoven fabric, curling of the end portion in the width direction of the resin coated nonwoven fabric can be prevented.
- the resin penetrates into the inside of the nonwoven fabric by the coating of the resin composition, but it does not always reach the surface on the opposite side of the coated surface (a state where the resin is beautifully impregnated to the back surface). There are cases where the layer is divided into an impregnated layer and a non-impregnated non-woven fabric layer.
- the difference in the heat shrinkage behavior of these two layers is considered to be the cause of the curl.
- the nonwoven fabric of the portion compressed by the convex portion of the embossing roll is dense in fibers, but the portion that is not pressed remains coarse in the fiber, so from the embossed surface side
- the curl is preferably 20 mm or less as a value measured by a measurement method described later. More preferably, it is 18 mm or less, More preferably, it is 15 mm or less.
- the coating method is not particularly limited, but a knife coating method, a gravure coating method, an air knife coating method, or the like can be employed.
- the knife coating method and the air knife coating method are preferable in terms of good permeability.
- the coated nonwoven fabric may be heat treated for drying. Conditions for the heat treatment are not particularly limited, and may be, for example, 100 ° C. to 160 ° C. (more preferably 110 ° C. to 150 ° C.) for 0.5 minutes to 10 minutes (more preferably 1 minute to 5 minutes).
- the obtained resin-coated non-woven fabric is preferably passed through an embossing roll so as to have an uneven pattern on at least one side.
- the embossing is preferably performed on the resin-coated surface of the nonwoven fabric. This is because a clearer embossed pattern can be obtained.
- the embossed pattern is not particularly limited. For example, leather-like, satin-like, wood-grained, fabric pattern, geometric pattern (for example, polygonal column shape such as cylindrical shape, triangular prism shape, quadrangular prism shape, truncated cone shape, triangular frustum shape)
- the shape and the shape of a polygonal frustum such as a quadrangular frustum shape may be appropriately determined according to the required design.
- a paper roll is preferably used as the opposing roll of the embossing roll.
- corrugation can be simultaneously formed on both surfaces of a resin coat nonwoven fabric.
- the embossing is preferably performed by heating so that the resin-coated non-woven fabric is about 130 ° C. to 180 ° C.
- the resin-coated nonwoven fabric of the present invention can be welded with a high-frequency welder.
- a measure of whether or not welding is possible is that the high-frequency welder weld has a tensile (breaking) strength of 5.0 N / cm or more.
- the strength of the welded portion is preferably 7 N / cm or more, and more preferably 8 N / cm or more. A method for measuring the strength of the welded portion will be described in Examples.
- the resin-coated nonwoven fabric of the present invention has flexibility (flexibility) because the amount of (meth) acrylic acid ester units is set in an appropriate range.
- flexibility As a measure of flexibility, it is preferably 80 mm to 160 mm in the cantilever type (JIS L 1913 6.7.2 (2010)). More preferably, it is 90 mm to 140 mm, and still more preferably 100 mm to 130 mm.
- the resin-coated nonwoven fabric of the present invention has a pattern by embossing. Embossing with a specific shape is effective for improving the tackiness when the resin-coated nonwoven fabric is wound into a roll, in addition to the purpose of imparting design properties, and prevents the appearance of stickiness (tack), blocking, etc. It is difficult to cause inconvenience.
- the resin-coated non-woven fabric of the present invention when used for a tonneau cover of an automobile, the tonneau cover is wound into a roll shape when not in use, and is unwound when in use, but when tuck occurs, a sound is heard when unwinding. Sometimes. This is the sound that occurs when both layers peel off as a result of blocking between the resin coated surfaces or between the resin coated surface and the nonwoven fabric surface when the hardness of the entire resin composition is low, Reduction of crisp noise has been demanded.
- the shape of the embossing is not particularly limited, but the resin-coated nonwoven fabric is leather-like, satin-like, wood-grained, fabric pattern, geometric pattern (for example, a polygonal column shape such as a columnar shape, a triangular prism shape, a quadrangular prism shape, a cone, etc.
- geometric pattern for example, a polygonal column shape such as a columnar shape, a triangular prism shape, a quadrangular prism shape, a cone, etc.
- a shape that can give a shape such as a trapezoidal shape, a triangular frustum shape, a polygonal frustum shape such as a quadrangular frustum shape, or the like is preferable.
- the quadrangular pyramid shape is preferable because it is excellent in the effect of reducing the burr generated from the tack.
- the size of the embossed shape is preferably 500 ⁇ m to 2000 ⁇ m when any two points on the contour line of the embossed pattern are selected so that the length between them is maximized on the plane of the resin-coated nonwoven fabric ( More preferably 700 ⁇ m to 1600 ⁇ m, still more preferably 1000 ⁇ m to 1300 ⁇ m, and the height is preferably 250 ⁇ m to 700 ⁇ m (more preferably 300 ⁇ m to 650 ⁇ m, still more preferably 350 ⁇ m to 600 ⁇ m).
- the embossed pattern in the resin-coated nonwoven fabric there may be mentioned a mode in which the embossed pattern is arranged in a lattice shape, a mode in which the embossed pattern is arranged in a staggered manner, a mode in which the embossed pattern is arranged at random, and a leather texture.
- the most preferred embossing mode is a mode in which the inverted quadrangular frustum-shaped recesses are staggered as viewed from the resin-coated surface side (any surface may be used when both surfaces of the nonwoven fabric substrate are resin-coated) It is.
- DSC differential scanning calorimeter
- ⁇ Curl> A resin-coated non-woven fabric cut into a width of 75 mm and a length of 205 mm was used as a sample, and was allowed to stand at 90 ° C. in an absolutely dry state for 24 hours, and the maximum height (mm) at which the side was warped was measured.
- ⁇ Tensile (breaking) strength of welded part of high frequency welder> Resin coated layers of resin coated nonwoven fabric with high frequency welder (new hybrid high frequency welder YO-5AN; manufactured by Yamamoto Vinita Co., Ltd.), 0.25A, mold temperature 150 ° C, welding time 3 seconds, cooling time 3 seconds Are welded and joined in a linear form to produce a sample.
- the length in the direction perpendicular to the welded portion is about 200 mm, the length in the same direction as the welded portion (this length is the width of the test piece) is 30 mm, and the welded portion is near the center of the test piece. Then, a test piece is cut out from the sample.
- a test piece is sandwiched between upper and lower chucks of a tensile tester (“Autograph (registered trademark)” manufactured by Shimadzu Corporation) so that the distance between the chucks becomes 100 mm, and is pulled at a pulling speed of 200 mm / min.
- the strength at the time of fracture was divided by the length in the width direction of the test piece to obtain the tensile strength (N / cm).
- ⁇ Strong> A specimen cut into a width of 30 mm and a length of 200 mm is sandwiched between upper and lower chucks of a tensile tester (“Autograph (registered trademark)” manufactured by Shimadzu Corporation), and the test piece is sandwiched between the chucks so that the distance between chucks is 100 mm. The value at break was read by pulling at a speed of 200 mm / min.
- Example 1 Polyethylene terephthalate (PET) with an intrinsic viscosity of 0.65 dl / g is melt-spun at a spinning temperature of 285 ° C. and a single-hole discharge rate of 1.0 g / min, opened while being pulled by an ejector, and arranged on a net conveyor. was deposited at a speed adjusted to be random. A spunbonded nonwoven fabric having a basis weight of 100 g / m 2 made of long fibers having a single yarn fineness of 2.0 dtex was obtained. Next, embossing was performed at 230 ° C.
- PET Polyethylene terephthalate
- thermocompression type long fiber nonwoven fabric a linear pressure of 20 kN / m with an embossing roll in which pyramidal trapezoidal convex portions with a crimping area ratio of 9% were arranged in a staggered manner to obtain a thermocompression type long fiber nonwoven fabric.
- thermocompression-bonded long-fiber nonwoven fabric The surface (embossed surface) of the above-mentioned thermocompression-bonded long-fiber nonwoven fabric is coated with the resin composition 1 with a knife coater so that the resin adhesion after drying is 80 g / m 2 , dried, Embossing was performed at 153 ° C. and a linear pressure of 70 kN / m with a school-type embossing roll to obtain a resin-coated nonwoven fabric.
- the design property, curl, bending resistance, tensile (breaking) strength and strength of the welder welded portion were evaluated by the above methods and are shown in Table 1.
- the DSC curve obtained at this time is shown in FIG. 1-1, and an enlarged view ( ⁇ 20 ° C. to 20 ° C.) of FIG. 1-1 is shown in FIG. 1-2.
- Example 2 In the same manner as in Example 1, a thermocompression type long fiber nonwoven fabric was obtained.
- a resin composition is obtained by thoroughly mixing 35 parts of an emulsion (“Yodosol AD133” manufactured by Henkel Japan Co., Ltd.) with a solid content and 35 parts of calcium carbonate (“Escalon # 100” manufactured by Sankyo Seiko Co., Ltd.) as an extender. 2 was obtained.
- thermocompression bonding type long fiber nonwoven fabric The surface (embossed surface) of the above-mentioned thermocompression bonding type long fiber nonwoven fabric is coated with the resin composition 2 with a knife coater so that the amount of the resin adhered after drying is 80 g / m 2 , dried, Embossing was performed at 153 ° C. and a linear pressure of 70 kN / m with a school-type embossing roll to obtain a resin-coated nonwoven fabric.
- Table 1 shows the evaluation results of various characteristics.
- Example 3 In the same manner as in Example 1, a thermocompression type long fiber nonwoven fabric was obtained.
- thermocompression-bonded long-fiber nonwoven fabric The surface (embossed surface) of the above-mentioned thermocompression-bonded long-fiber nonwoven fabric is coated with the resin composition 3 with a knife coater so that the resin adhesion after drying is 80 g / m 2 , and dried. Embossing was performed at 153 ° C. and a linear pressure of 70 kN / m with a textured embossing roll to obtain a resin-coated nonwoven fabric. Table 1 shows the evaluation results of various characteristics.
- Example 4 In the same manner as in Example 1, a thermocompression type long fiber nonwoven fabric was obtained.
- thermocompression-bonded long-fiber nonwoven fabric The surface (embossed surface) of the above-mentioned thermocompression-bonded long-fiber nonwoven fabric is coated with the resin composition 4 with a knife coater so that the resin adhesion after drying is 80 g / m 2 , and dried. Embossing was performed at 153 ° C. and a linear pressure of 70 kN / m with a textured embossing roll to obtain a resin-coated nonwoven fabric. Table 1 shows the evaluation results of various characteristics.
- Example 5 Polyethylene terephthalate (PET) with an intrinsic viscosity of 0.65 dl / g is melt-spun at a spinning temperature of 285 ° C. and a single-hole discharge rate of 1.0 g / min, opened while being pulled by an ejector, and arranged on a net conveyor. was deposited at a speed adjusted to be random. A spunbonded nonwoven fabric having a basis weight of 150 g / m 2 made of long fibers having a single yarn fineness of 2.0 dtex was obtained. Next, embossing was performed at 230 ° C.
- PET Polyethylene terephthalate
- thermocompression type long fiber nonwoven fabric a linear pressure of 20 kN / m with an embossing roll in which pyramidal trapezoidal convex portions with a crimping area ratio of 9% were arranged in a staggered manner to obtain a thermocompression type long fiber nonwoven fabric.
- a resin-coated nonwoven fabric was obtained in the same manner as in Example 1 except that the resin composition 1 was coated with a knife coater so that the amount of resin adhered after drying was 150 g / m 2 .
- Table 1 shows the evaluation results of various characteristics.
- Example 6 Polyethylene terephthalate (PET) with an intrinsic viscosity of 0.65 dl / g is melt-spun at a spinning temperature of 285 ° C. and a single-hole discharge rate of 1.0 g / min, opened while being pulled by an ejector, and arranged on a net conveyor. was deposited at a speed adjusted to be random. A spunbonded nonwoven fabric having a basis weight of 50 g / m 2 made of long fibers having a single yarn fineness of 2.0 dtex was obtained. Next, embossing was performed at 230 ° C.
- PET Polyethylene terephthalate
- thermocompression type long fiber nonwoven fabric a linear pressure of 20 kN / m with an embossing roll in which pyramidal trapezoidal convex portions with a crimping area ratio of 9% were arranged in a staggered manner to obtain a thermocompression type long fiber nonwoven fabric.
- a resin-coated nonwoven fabric was obtained in the same manner as in Example 1 except that the resin composition 1 was coated with a knife coater so that the amount of the resin adhered after drying was 50 g / m 2 .
- Table 1 shows the evaluation results of various characteristics.
- Example 7 A resin-coated nonwoven fabric was obtained in the same manner as in Example 1 except that the non-embossed surface of the long-fiber nonwoven fabric was coated with the resin composition 1. Table 1 shows the evaluation results of various characteristics.
- Example 8 In the same manner as in Example 1, a thermocompression type long fiber nonwoven fabric was obtained.
- Acrylic ester polymer, 30 parts in solid content of vinyl chloride and acrylic ester copolymer emulsion (vinyl chloride / acrylic ester 80/20; “ViniBran (registered trademark) 701” manufactured by Nissin Chemical Industry Co., Ltd.) Emulsions (“Sybinol (registered trademark) ACF-15” manufactured by Seiden Chemical Co., Ltd.) in solids and 34 parts of calcium carbonate (“Escalon # 100” manufactured by Sankyo Seiko Co., Ltd.) as a filler are mixed well.
- a resin composition 8 was obtained.
- thermocompression type long fiber nonwoven fabric The surface (embossed surface) of the above-mentioned thermocompression type long fiber nonwoven fabric is coated with the resin composition 8 with a knife coater so that the amount of the resin adhered after drying is 80 g / m 2 , dried, Embossing was performed at 153 ° C. and a linear pressure of 70 kN / m with a school-type embossing roll to obtain a resin-coated nonwoven fabric.
- Table 1 shows the evaluation results of various characteristics.
- thermocompression-bonded long-fiber non-woven fabric is coated with the resin composition 9 with a knife coater so that the resin adhesion after drying is 80 g / m 2 , dried, and then trapezoidal. Embossing was performed with a lattice-type embossing roll at 153 ° C. and a linear pressure of 70 kN / m to obtain a resin-coated nonwoven fabric.
- the design property, curl, bending resistance, tensile (breaking) strength and strength of the welder welded portion were evaluated by the above methods and are shown in Table 2.
- thermocompression bonding type long fiber nonwoven fabric The surface (embossed surface) of the above-mentioned thermocompression bonding type long fiber nonwoven fabric is coated with the resin composition 10 with a knife coater so that the resin adhesion after drying is 80 g / m 2 , dried, and then trapezoidal. Embossing was performed with a lattice-type embossing roll at 153 ° C. and a linear pressure of 70 kN / m to obtain a resin-coated nonwoven fabric. Table 2 shows the evaluation results of various characteristics.
- thermocompression type long fiber nonwoven fabric was obtained.
- Composition 11 was obtained.
- thermocompression bonding type long fiber nonwoven fabric The surface (embossed surface) of the above-mentioned thermocompression bonding type long fiber nonwoven fabric is coated with the resin composition 11 with a knife coater so that the resin adhesion after drying is 80 g / m 2 , dried, and then trapezoidal. Embossing was performed with a lattice-type embossing roll at 153 ° C. and a linear pressure of 70 kN / m to obtain a resin-coated nonwoven fabric. Table 2 shows the evaluation results of various characteristics.
- Comparative Example 4 Polyethylene terephthalate (PET) with an intrinsic viscosity of 0.65 dl / g is melt-spun at a spinning temperature of 285 ° C. and a single-hole discharge rate of 1.0 g / min, opened while being pulled by an ejector, and arranged on a net conveyor. was deposited at a speed adjusted to be random. A spunbonded nonwoven fabric having a basis weight of 200 g / m 2 made of long fibers having a single yarn fineness of 2.0 dtex was obtained. Next, embossing was performed at 230 ° C.
- PET Polyethylene terephthalate
- thermocompression type long fiber nonwoven fabric a linear pressure of 20 kN / m with an embossing roll in which pyramidal trapezoidal convex portions with a crimping area ratio of 9% were arranged in a staggered manner to obtain a thermocompression type long fiber nonwoven fabric.
- thermocompression-bonded long fiber nonwoven fabric The surface (embossed surface) of the thermocompression-bonded long fiber nonwoven fabric is coated with the resin composition 1 with a knife coater so that the resin adhesion after drying is 80 g / m 2 , dried, and then trapezoidal. Embossing was performed with a lattice-type embossing roll at 153 ° C. and a linear pressure of 70 kN / m to obtain a resin-coated nonwoven fabric. Table 2 shows the evaluation results of various characteristics.
- Comparative Example 5 Polyethylene terephthalate (PET) with an intrinsic viscosity of 0.65 dl / g is melt-spun at a spinning temperature of 285 ° C. and a single-hole discharge rate of 1.0 g / min, opened while being pulled by an ejector, and arranged on a net conveyor. was deposited at a speed adjusted to be random. A spunbonded nonwoven fabric having a basis weight of 40 g / m 2 made of long fibers having a single yarn fineness of 2.0 dtex was obtained. Next, embossing was performed at 230 ° C.
- PET Polyethylene terephthalate
- thermocompression type long fiber nonwoven fabric a linear pressure of 20 kN / m with an embossing roll in which pyramidal trapezoidal convex portions with a crimping area ratio of 9% were arranged in a staggered manner to obtain a thermocompression type long fiber nonwoven fabric.
- thermocompression-bonded long fiber nonwoven fabric The surface (embossed surface) of the thermocompression-bonded long fiber nonwoven fabric is coated with the resin composition 1 with a knife coater so that the resin adhesion after drying is 80 g / m 2 , dried, and then trapezoidal. Embossing was performed with a lattice-type embossing roll at 153 ° C. and a linear pressure of 70 kN / m to obtain a resin-coated nonwoven fabric. Table 2 shows the evaluation results of various characteristics. In Comparative Example 5, since the basis weight of the nonwoven fabric was too small, a plurality of holes were confirmed in the resin-coated nonwoven fabric after the resin composition 1 was coated and embossed.
- thermocompression type long fiber nonwoven fabric was obtained.
- the surface (embossed surface) of the thermocompression-bonded long-fiber nonwoven fabric is coated with the resin composition 1 with a knife coater so that the resin adhesion after drying is 200 g / m 2 , dried, and then trapezoidal.
- Embossing was performed with a lattice-type embossing roll at 153 ° C. and a linear pressure of 70 kN / m to obtain a resin-coated nonwoven fabric.
- Table 2 shows the evaluation results of various characteristics.
- thermocompression type long fiber nonwoven fabric was obtained.
- the surface (embossed surface) of the thermocompression-bonded long-fiber non-woven fabric is coated with the resin composition 1 with a knife coater so that the resin adhesion after drying is 30 g / m 2 , dried, and then trapezoidal.
- Embossing was performed with a lattice-type embossing roll at 153 ° C. and a linear pressure of 70 kN / m to obtain a resin-coated nonwoven fabric.
- Table 2 shows the evaluation results of various characteristics.
- Comparative Example 8 Polyethylene terephthalate (PET) with an intrinsic viscosity of 0.65 dl / g is melt-spun at a spinning temperature of 285 ° C. and a single-hole discharge rate of 1.0 g / min, opened while being pulled by an ejector, and arranged on a net conveyor. was deposited at a speed adjusted to be random. A spunbonded nonwoven fabric having a basis weight of 100 g / m 2 made of long fibers having a single yarn fineness of 2.0 dtex was obtained. Subsequently, embossing was performed at 230 ° C.
- PET Polyethylene terephthalate
- the needle punch long fiber nonwoven fabric was obtained by performing the entanglement process by the needle punch under the conditions of 65 needles / cm 2 and a needle depth of 12 mm using a needle punch machine with a 40th needle.
- the surface (embossed surface) of the needle punch type long fiber nonwoven fabric is coated with the resin composition 1 with a knife coater so that the amount of resin adhered after drying is 80 g / m 2 , dried, and then trapezoidal. Embossing was performed with a lattice-type embossing roll at 153 ° C. and a linear pressure of 70 kN / m to obtain a resin-coated nonwoven fabric. Table 2 shows the evaluation results of various characteristics.
- the resin-coated non-woven fabric of the present invention can be welded by a high-frequency welder, has a beautiful embossed pattern and is excellent in design, and is a flexible resin-coated non-woven fabric, such as vehicle interior materials such as tonneau covers, wallpaper, bed members, It can be used for chair members and the like.
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Abstract
Description
なお、本発明において「(メタ)アクリル酸エステル」とは、「アクリル酸エステル及び/又はメタクリル酸エステル」を意味する。
本発明では、基材となる不織布として、ポリエチレンテレフタレート(PET)製熱圧着タイプの長繊維不織布を用いる。PETは、力学的強度(機械的強度)や耐熱性等の特性に優れているからである。なお、10質量%以下であれば、PET以外のポリエステルがブレンドされていてもよい。PETの固有粘度は、特に限定されないが、0.6dl/g以上が好ましい。
本発明の樹脂コート不織布は、上記長繊維不織布の片面に樹脂コート層を有する。樹脂コート層を構成する樹脂としては、塩化ビニルユニットと(メタ)アクリル酸エステルユニットとを含む樹脂であることが必要である。塩化ビニルユニットが高周波ウェルダーでの溶着を可能にし、(メタ)アクリル酸エステルユニットが樹脂にほどよい柔らかさ(柔軟性)を付与する。
本発明において、不織布に樹脂をコートする際には、樹脂(エマルジョン)に、公知の架橋剤、難燃剤、湿潤剤、粘性調節剤、増粘剤、消泡剤、改質剤、顔料、着色剤、充填剤、老化防止剤、紫外線吸収剤、紫外線安定剤等の添加剤を、本発明の目的を阻害しない範囲で加えてもよく、これらを混合した樹脂組成物の形態で用いることが好ましい。添加剤の添加量は、樹脂組成物中(樹脂、溶媒、及び充填剤、難燃剤等の添加剤の合計100質量%)、10質量%~50質量%であるのが好ましく、より好ましくは15質量%~45質量%であり、さらに好ましくは20質量%~40質量%である。
本発明の樹脂コート不織布の好適な製造方法の一例を説明する。まず、公知の方法でスパンボンド不織布を製造する。続いて、前記したように、エンボスロールを通して圧着する。これで基材としての不織布が完成する。このときのエンボス加工は150~250℃程度で行うとよい。
本発明の樹脂コート不織布は、高周波ウェルダーによる溶着が可能である。溶着が可能かどうかの目安は、高周波ウェルダー溶着部が5.0N/cm以上の引張(破断)強度を示すことである。溶着部の強度は7N/cm以上あることが好ましく、8N/cm以上あることがさらに好ましい。溶着部の強度の測定方法は、実施例で説明する。
<不織布の目付>
JIS L 1906 5.2(2000)記載の方法に準拠し、20cm×20cmのサイズで測定した。
ガラス転移温度の測定は、JIS K7121にしたがって行った。
樹脂コート不織布から、片刃で、基材である不織布部分を削り落として約5mgの樹脂コート層サンプルを採取した。示差走査型熱量計(DSC、TA instruments社製「Q100」)を使用して、窒素気流中、-50℃で2分間間保持したサンプルを、昇温速度20℃/分で-50℃から200℃まで昇温した後、-50℃まで急冷し、再び、昇温速度20℃/分で200℃まで昇温させたときの発熱、吸熱曲線(DSC曲線)を測定した。得られたDSC曲線において、高温側及び低温側の各ベースラインを延長した直線から縦軸方向に等距離にある直線と、ガラス転移の階段状変化部分の曲線とが交わる点の温度を読み取り、ガラス転移温度(℃)とした。
不織布の熱圧着跡が見えず、エンボス柄がはっきりしているものを〇、エンボス柄がはっきりしていないもの、すなわち、加工に使用したエンボスロールの柄と異なるものを△とし、エンボス柄が全く無く、不織布の熱圧着跡が見えるものを×として評価した。
樹脂コート不織布を、幅75mm、長さ205mmに裁断したものを試料とし、90℃、絶乾状態で24時間放置し、側部の反り上がった最大高さ(mm)を測定した。
JIS L 1913 6.7.2(2010)に記載のカンチレバー式で測定した。なお、試料は、試料の長さ方向が、不織布製造時の長さ方向と一致するように調製した(以下、高周波ウェルダー溶着部の引張(破断)強度、強力の測定においても同様)。
高周波ウェルダー加工機(新型ハイブリッド高周波ウェルダーYO-5AN;山本ビニター株式会社製)で、0.25A、金型温度150℃、溶着時間3秒、冷却時間3秒で、樹脂コート不織布の樹脂コート層同士を線状に溶着接合して試料を作製する。溶着部に垂直な方向の長さが200mm程度、溶着部と同一方向の長さ(この長さが試験片の幅となる)が30mmとなり、かつ、溶着部が試験片の中央近傍に来るように、試料から試験片を切り出す。引張試験機(島津製作所株式会社製「オートグラフ(登録商標)」)の上下のチャックに、チャック間距離が100mmとなるように試験片を挟み、引張速度200mm/分で引張って、溶着部が破断したときの強度を試験片幅方向長さで割って、引張強度(N/cm)とした。
幅30mm、長さ200mmに裁断した試料を、引張試験機(島津製作所社製「オートグラフ(登録商標)」)の上下のチャックに、チャック間距離が100mmとなるように試験片を挟み、引張速度200mm/分で引っ張って破断時の数値を読み取った。
固有粘度0.65dl/gのポリエチレンテレフタレート(PET)を用い、紡糸温度285℃、単孔吐出量1.0g/分で溶融紡糸し、エジェクターで引き取りつつ開繊して、ネットコンベア上に繊維配列がランダムになるように速度調整して堆積させた。単糸繊度2.0dtexの長繊維からなる目付100g/m2のスパンボンド不織布を得た。次いで圧着面積率9%の角錐台形状の凸部が千鳥配列されたエンボスロールで、230℃、線圧20kN/mでエンボス加工を行い、熱圧着タイプの長繊維不織布を得た。
実施例1と同様にして、熱圧着タイプの長繊維不織布を得た。
塩化ビニルとアクリル酸エステル共重合体エマルジョン(塩化ビニル/アクリル酸エステル=50/50;日信化学工業株式会社製「ビニブラン(登録商標)271」)を固形分で30部、アクリル酸エステル重合体エマルジョン(ヘンケルジャパン株式会社製「ヨドゾールAD133」)を固形分で35部、及び、増量剤として炭酸カルシウム(三共精粉株式会社製「エスカロン#100」)35部をよく混合して、樹脂組成物2を得た。
実施例1と同様にして、熱圧着タイプの長繊維不織布を得た。塩化ビニルとアクリル酸エステル共重合体エマルジョン(塩化ビニル/アクリル酸エステル=50/50;日信化学工業株式会社製「ビニブラン(登録商標)271」)を固形分で70部と、増量剤として炭酸カルシウム(三共精粉株式会社製「エスカロン#100」)30部とをよく混合して、樹脂組成物3を得た。
実施例1と同様にして、熱圧着タイプの長繊維不織布を得た。
塩化ビニルとアクリル酸エステル共重合体エマルジョン(塩化ビニル/アクリル酸エステル=80/20;日信化学工業株式会社製「ビニブラン(登録商標)278」)を固形分で20部、アクリル酸エステル重合体エマルジョン(新中村化学工業株式会社製「ニューコート9500」)を固形分で51部、及び、増量剤として炭酸カルシウム(三共精粉株式会社製「エスカロン#100」)29部をよく混合し、樹脂組成物4を得た。
固有粘度0.65dl/gのポリエチレンテレフタレート(PET)を用い、紡糸温度285℃、単孔吐出量1.0g/分で溶融紡糸し、エジェクターで引き取りつつ開繊して、ネットコンベア上に繊維配列がランダムになるように速度調整して堆積させた。単糸繊度2.0dtexの長繊維からなる目付150g/m2のスパンボンド不織布を得た。次いで圧着面積率9%の角錐台形状の凸部が千鳥配列されたエンボスロールで、230℃、線圧20kN/mでエンボス加工を行い、熱圧着タイプの長繊維不織布を得た。
固有粘度0.65dl/gのポリエチレンテレフタレート(PET)を用い、紡糸温度285℃、単孔吐出量1.0g/分で溶融紡糸し、エジェクターで引き取りつつ開繊して、ネットコンベア上に繊維配列がランダムになるように速度調整して堆積させた。単糸繊度2.0dtexの長繊維からなる目付50g/m2のスパンボンド不織布を得た。次いで圧着面積率9%の角錐台形状の凸部が千鳥配列されたエンボスロールで、230℃、線圧20kN/mでエンボス加工を行い、熱圧着タイプの長繊維不織布を得た。
長繊維不織布の非エンボス面に樹脂組成物1をコートしたこと以外は実施例1と同様にして、樹脂コート不織布を得た。各種特性の評価結果を表1に示す。
実施例1と同様にして、熱圧着タイプの長繊維不織布を得た。
塩化ビニルとアクリル酸エステル共重合体エマルジョン(塩化ビニル/アクリル酸エステル=80/20;日信化学工業株式会社製「ビニブラン(登録商標)701」)を固形分で30部、アクリル酸エステル重合体エマルジョン(サイデン化学株式会社製「サイビノール(登録商標)ACF-15」)を固形分で34部、及び、増量剤として炭酸カルシウム(三共精粉株式会社製「エスカロン#100」)36部をよく混合して、樹脂組成物8を得た。
実施例1と同様にして、熱圧着タイプの長繊維不織布を得た。
塩化ビニルとアクリル酸エステル共重合体エマルジョン(塩化ビニル/アクリル酸エステル=80/20;日信化学工業株式会社製「ビニブラン(登録商標)278」)を固形分で40部、及び、増量剤として炭酸カルシウム(三共精粉株式会社製「エスカロン#100」)60部をよく混合し、樹脂組成物9を得た。
実施例1と同様にして、熱圧着タイプの長繊維不織布を得た。
塩化ビニルとアクリル酸エステル共重合体エマルジョン(塩化ビニル/アクリル酸エステル=80/20;日信化学工業株式会社製「ビニブラン(登録商標)278」)を固形分で30部、塩化ビニルとアクリル酸エステル共重合体エマルジョン(塩化ビニル/アクリル酸エステル=50/50;日信化学工業株式会社製「ビニブラン(登録商標)271」)を固形分で50部、及び、増量剤として炭酸カルシウム(三共精粉株式会社製「エスカロン#100」)20部をよく混合して、樹脂組成物10を得た。
実施例1と同様にして、熱圧着タイプの長繊維不織布を得た。
塩化ビニルとアクリル酸エステル共重合体エマルジョン(塩化ビニル/アクリル酸エステル=80/20;日信化学工業株式会社製「ビニブラン(登録商標)278」)を固形分で10部、アクリル酸エステル重合体エマルジョン(新中村化学工業株式会社製「ニューコート9500」)を固形分で55部、及び、増量剤として炭酸カルシウム(三共精粉株式会社製「エスカロン#100」)35部をよく混合し、樹脂組成物11を得た。
固有粘度0.65dl/gのポリエチレンテレフタレート(PET)を用い、紡糸温度285℃、単孔吐出量1.0g/分で溶融紡糸し、エジェクターで引き取りつつ開繊して、ネットコンベア上に繊維配列がランダムになるように速度調整して堆積させた。単糸繊度2.0dtexの長繊維からなる目付200g/m2のスパンボンド不織布を得た。次いで圧着面積率9%の角錐台形状の凸部が千鳥配列されたエンボスロールで、230℃、線圧20kN/mでエンボス加工を行い、熱圧着タイプの長繊維不織布を得た。
固有粘度0.65dl/gのポリエチレンテレフタレート(PET)を用い、紡糸温度285℃、単孔吐出量1.0g/分で溶融紡糸し、エジェクターで引き取りつつ開繊して、ネットコンベア上に繊維配列がランダムになるように速度調整して堆積させた。単糸繊度2.0dtexの長繊維からなる目付40g/m2のスパンボンド不織布を得た。次いで圧着面積率9%の角錐台形状の凸部が千鳥配列されたエンボスロールで、230℃、線圧20kN/mでエンボス加工を行い、熱圧着タイプの長繊維不織布を得た。
実施例1と同様にして、熱圧着タイプの長繊維不織布を得た。
上記の熱圧着タイプの長繊維不織布の表面(エンボス面)に、乾燥後の樹脂付着量が200g/m2になるようナイフコーターで上記樹脂組成物1をコートして、乾燥させた後、台形格子型のエンボスロールで、153℃、線圧70kN/mでエンボス加工を行い、樹脂コート不織布を得た。各種特性の評価結果を表2に示す。
実施例1と同様にして、熱圧着タイプの長繊維不織布を得た。
上記の熱圧着タイプの長繊維不織布の表面(エンボス面)に、乾燥後の樹脂付着量が30g/m2になるようナイフコーターで上記樹脂組成物1をコートして、乾燥させた後、台形格子型のエンボスロールで、153℃、線圧70kN/mでエンボス加工を行い、樹脂コート不織布を得た。各種特性の評価結果を表2に示す。
固有粘度0.65dl/gのポリエチレンテレフタレート(PET)を用い、紡糸温度285℃、単孔吐出量1.0g/分で溶融紡糸し、エジェクターで引き取りつつ開繊して、ネットコンベア上に繊維配列がランダムになるように速度調整して堆積させた。単糸繊度2.0dtexの長繊維からなる目付100g/m2のスパンボンド不織布を得た。次いで圧着面積率9%の角錐台形状の凸部が千鳥配列されたエンボスロールで、230℃、線圧20kN/mでエンボス加工を行った。さらに、ニードルパンチ機を用い、40番手の針で、65本/cm2、針深度12mmの条件でニードルパンチによる交絡処理を行って、ニードルパンチ長繊維不織布を得た。
Claims (3)
- 目付け50g/m2~150g/m2のポリエチレンテレフタレート製熱圧着タイプの長繊維不織布の片面に、乾燥後の塗布量が40g/m2~150g/m2である樹脂コート層を有し、
上記樹脂コート層が、塩化ビニルユニット10質量%~45質量%と(メタ)アクリル酸エステルユニット30質量%~55質量%とを含有し、且つ、
上記樹脂コート面にエンボス加工による模様を有することを特徴とする樹脂コート不織布。 - 上記樹脂コート層が、示差走査熱量測定(DSC)において、30℃以下に少なくとも1つのガラス転移温度(Tg)を有する請求項1に記載の樹脂コート不織布。
- 上記長繊維不織布にはエンボス加工が施されており、当該エンボス加工面に上記樹脂がコートされている請求項1または2に記載の樹脂コート不織布。
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