TW201414901A - Suede-type coated fabric and method of manufacturing the same - Google Patents

Abstract

A suede-type coated fabric and a method of manufacturing the same are disclosed. A water-borne resin composition, which includes water-borne resin (A), thermally expandable microspheres (B), a blowing promoter (C) and so on, is coated on a surface of a base fabric and subjected to multi-stage thermal treatment, so as to obtain the suede-touch coated fabric with closed forms and continuous pores.

Description

Wool leather coated fabric and manufacturing method thereof

The present invention relates to a composite fabric and a method of manufacturing the same, and more particularly to a textured leather coated fabric and a method of making the same.

Foamed synthetic leather materials are widely used in daily necessities. Usually, such materials are made of fabric-based cloth and coated with various polymer materials on the surface. Recently, with the advancement of base fabrics, polymer materials, and surface treatments, the types, touches, and functions of foamed synthetic leather materials have been greatly improved to meet various needs.

Suede coated fabric, also known as artificial suede, is a kind of foamed synthetic leather material, and its kind and manufacturing method are quite diverse. For example, a conventional method is to apply a layer of aqueous polyurethane (PU) resin on the surface of the base fabric by wet coating, and then wet-solidify and remove the solvent contained in the PU resin. Buffing treatment, after the surface is piled and stretched, it can have a leathery feel. Another conventional method is to apply a layer of resin on the surface of the base fabric by a dry coating method and dry it, and then perform the above-mentioned rubbing treatment. In addition, other conventional methods are to directly perform the leather treatment on the fibers, or to implant the hairs on the surface of the base fabric by using an adhesive, an electrostatic flocking method or the like to impart a feeling of velvet leather.

However, the above conventional processes still have the following problems. First, the wet coating PU method requires a larger amount of solvent, which is less environmentally friendly, cumbersome and time consuming. Secondly, the wet dry coating resin method requires the use of an adhesive to fix the resin to the base fabric. On the one hand, the adhesive is less environmentally friendly, and on the other hand, it is at the leather. During the process, the resin is easily peeled off, which in turn affects the quality of the textured fabric. Furthermore, by using an adhesive or an electrostatic flocking method, on the one hand, the adhesive is less environmentally friendly, and on the other hand, the implanted hair implanted by the electrostatic flocking method is easy to fall off after being used for a period of time, and also affects the quality of the textured fabric. .

In view of the above, there is a need to provide a velvet-dyed coated fabric and a method of manufacturing the same to improve the shortcomings of conventional velvet-coated fabrics and processes thereof.

Therefore, an aspect of the present invention provides a method for producing a textured fabric coated fabric comprising coating an aqueous resin (A), a thermally expandable microparticle (B), and a foaming auxiliary agent on the surface of the base fabric ( After the aqueous resin composition of C) or the like, a velvet leather coated fabric can be obtained by a multi-stage heat treatment.

Another aspect of the present invention provides a velvet-dyed coated fabric which is obtained by the above method.

According to the above aspect of the invention, a method of producing a textured leather coated fabric is proposed. In one embodiment, first, a dry coating step is performed to coat the first aqueous resin composition on at least one surface of the base fabric.

In an example, the first aqueous resin composition may include, but is not limited to, an aqueous resin (A), a plurality of thermal expansion type particles (B), a foaming aid (C), an aqueous solution of a bridging agent (D), and a lanthanide system. Additive (E). The above-mentioned thermally expandable fine particles (B), a foaming auxiliary (C), and a bridging agent aqueous solution (D) are uniformly dispersed in the aqueous resin (A).

In another embodiment, the heat-expandable particles (B) have an average particle diameter of from 1 μm to 100 μm, each of which has an outer casing coated with a liquid, the outer casing comprises a thermoplastic resin, and the thermoplastic resin has a high softening point. In the above liquid Initial boiling point (IBP).

In still another example, the aforementioned foaming aid (C) comprises a hydrocarbon solvent having a carbon number of 5 to 17, the hydrocarbon solvent is insoluble in water, and the hydrocarbon solvent has a volatilization rate lower than that of water. Volatilization rate.

In still another example, the amount of the thermally expandable fine particles (B) used is from 10 parts by weight to 20 parts by weight based on 100 parts by weight of the aqueous resin (A), and the amount of the foaming auxiliary (C) is 20 parts by weight to 150 parts by weight, and the aqueous solution of the bridging agent (D) are used in an amount of from 1 part by weight to 4 parts by weight.

Next, the base fabric coated with the first aqueous resin composition is subjected to a multi-stage heat treatment to form a textured fabric. The aforementioned multi-stage heat treatment may include, but is not limited to, performing the first heat treatment, the second heat treatment, and the third heat treatment. In one example, the first heat treatment is for removing the moisture of the first aqueous resin composition, the second heat treatment is for curing the aqueous resin (A) and forming the first coating layer, and the third heat treatment pair is The first coating layer is performed to form a foamed layer. The foam layer has a plurality of closed pores and a plurality of continuous pores, wherein the closed pores are formed by expansion of the heat-expandable fine particles (B), and the continuous pores are volatilized by the foaming aid (C). form. The resulting textured leather coated fabric is composed of the aforementioned foamed layer and a base fabric, wherein the foamed layer and the base fabric are directly bonded without any adhesive layer.

According to an embodiment of the present invention, the first aqueous resin composition further contains at least the lanthanoid additive (E), and the amount of the above-mentioned foaming auxiliary (C) is used based on the amount of the aqueous resin (A) used in an amount of 100 parts by weight. It is 20 parts by weight to 50 parts by weight, and the lanthanoid additive (E) can be used, for example, in an amount of 0.1 part by weight to 1.0 part by weight.

According to an embodiment of the present invention, the above aqueous resin (A) may include, but is not limited to, an aqueous polyurethane (PU) resin, an aqueous acrylic resin, or any combination thereof.

According to an embodiment of the present invention, the thermoplastic resin may include an acrylonitrile copolymer, and the liquid may include, but is not limited to, a hydrocarbon having 2 to 12 carbon atoms.

According to an embodiment of the present invention, the above-mentioned foaming assistant (C) may include, but is not limited to, an isoparaffin (IP) solvent having a carbon number of 5 to 17.

According to an embodiment of the present invention, the above-mentioned aqueous solution of the bridging agent (D) comprises 50% by weight of a bridging agent, and the above-mentioned bridging agent may include but is not limited to polycarbodiimide, water-dispersed isocyanate compound, amine compound. An aziridine compound, an epoxy resin compound or any combination of the above.

According to an embodiment of the invention, the third temperature of the third heat treatment is higher than the second temperature of the second heat treatment, and the second temperature is higher than the first temperature of the first heat treatment, and at the first temperature The above-mentioned heat-expandable fine particles (B) do not swell at the second temperature.

According to an embodiment of the present invention, before the performing the dry coating step, at least the performing the primer step and the preheating treatment are performed. The primer coating step applies the second aqueous resin composition to at least one surface of the base fabric, and the preheating treatment treats the second aqueous resin composition to remove the moisture of the second aqueous resin composition. And forming a second coating layer on the surface of the base fabric.

In an example, the second aqueous resin composition may include, but is not limited to, an aqueous resin (A), a heat-expandable fine particle (B), a foaming auxiliary (C), and an aqueous solution of a bridging agent (D), wherein the thermally expandable fine particles ( B), foaming aid (C) and rack The aqueous solution (D) of the aqueous solution is uniformly dispersed in the aqueous resin (A), and the amount of the thermally expandable fine particles (B) used is 5 parts by weight to 20 parts by weight based on 100 parts by weight of the aqueous resin (A). The foaming aid (C) is used in an amount of from 50 parts by weight to 150 parts by weight, and the aqueous solution of the bridging agent (D) is used in an amount of from 2 parts by weight to 4 parts by weight.

According to an embodiment of the invention, the fourth temperature of the preheating treatment is the same as the first temperature of the first heat treatment.

According to an embodiment of the invention, the dry coating step further comprises at least an embossing wheel coating process using a first embossing wheel having a first convex pattern, wherein the aqueous resin composition is applied to the base fabric by the first embossing wheel. The upper embossing forms an aqueous resin composition having a first convex pattern.

According to an embodiment of the present invention, the third heating process further comprises: applying at least one heating imprinting treatment to the first coating layer by using a second embossing wheel having a second convex pattern to make the first coating The layer forms a foamed layer having a raised second convex pattern, wherein the raised second convex pattern and the first convex pattern may be the same or different.

According to another aspect of the present invention, a velvet-dyed coated fabric is obtained which is obtained by the above method, wherein the velvet-dyed coated fabric is composed of a base fabric and at least one foamed layer, The at least one foamed layer has a plurality of closed pores and a plurality of continuous pores, and the base fabric is directly bonded to the at least one foamed layer and there is no adhesive layer.

The velvet dye-coated fabric of the present invention and a method for producing the same are characterized in that the surface of the base fabric is coated with an aqueous resin containing an aqueous resin (A), a thermally expandable fine particle (B), and a foaming auxiliary (C). After the object, a multi-stage heat treatment can be used to obtain a soft and fine textured fabric.

As described above, the present invention provides a velvet-dyed coated fabric and a method for producing the same, which are coated on the surface of a base fabric and coated with an aqueous resin (A), a thermally expandable fine particle (B), and a foaming auxiliary (C). After the resin composition, a multi-stage heat treatment can be used to obtain a textured leather coated fabric having a plurality of closed pores and a plurality of continuous pores.

Method for producing velvet leather coated fabric

Please refer to FIG. 1 , which is a partial flow chart showing a method of manufacturing a textured leather coated fabric according to an embodiment of the present invention. Hereinafter, a method 100 for producing a textured leather coated fabric of the present invention will be described with reference to Fig. 1 .

1. Dry coating aqueous resin composition

In an embodiment, the textured fabric of the present invention is subjected to a dry coating step to uniformly apply an aqueous resin composition (or first) to at least one surface of a base fabric. The aqueous resin composition) is as shown in step 101. The aqueous resin composition coated by the above dry coating step may be unpatterned (for example, as an undercoat layer) or have a pattern (for example, as a top coat layer). In other embodiments, the dry coating step may also selectively perform an embossing wheel coating process (or a Gravure roll coating process) using a first embossing wheel having a first convex pattern to make the aqueous resin composition An embossing wheel is embossed on the base fabric to form an aqueous resin composition having a first convex pattern for use as a top coat.

The base fabric used in the present invention is not limited and may be a nonwoven fabric, a woven fabric or a resin film. In general, the aqueous resin composition may be applied to one surface or both surfaces of the base fabric, and the coating amount of the aqueous resin composition on the surface of the base fabric is generally from 60 g/m ² to 90 g/m ² .

In an example, the first aqueous resin composition may include, but is not limited to, an aqueous resin (A), a plurality of thermal expansion type particles (B), a foaming aid (C), an aqueous solution of a bridging agent (D), and a lanthanide system. Additive (E). The above-mentioned thermally expandable fine particles (B), a foaming auxiliary (C), and a bridging agent aqueous solution (D) are uniformly dispersed in the aqueous resin (A). The following is a description of each component.

Waterborne resin (A)

In an embodiment, the aqueous resin (A) suitable for use in the present invention may include, but is not limited to, an aqueous polyurethane (PU) resin, an aqueous acrylic resin, or any combination thereof. Specific examples of the above-mentioned water-based PU resin include: trade name Evafanol series products (for example, Evafanol HA-15), Neostecker series products (above, manufactured by Taiwan Rihua Chemical Co., Ltd.); trade names WUA, WUS, WUP (for example, WUP-224) series Products (above from Taiwan Lida Chemical Co., Ltd.); trade name W, WD series products (above from Taiwan Anfeng Industrial); trade name UE, W series products (above from Taiwan Nanbao Resin Chemical Factory) or other performance equal The product. The above aqueous resin (A) may be used singly or in combination of plural kinds.

Here, it is explained that the above-mentioned aqueous resin (A) which is suitable for the present invention is preferably a film-forming property, and an aqueous PU product which lacks film formability or film formability is not suitable for use in the present invention.

Next, in another embodiment, the above-mentioned water-based acrylic resin is preferably a soft-typed acryl resin, and specific examples thereof may be used. For example, the product name is R-235 (made by Taiwan Lida Chemical Co., Ltd.); the trade name is F-325 (made by Taiwan Production Association); the product name is ETERSOL 1115-2 (made by Taiwan Changxing Chemical Co., Ltd.) or other products of equal performance.

Thermal expansion type particles (B)

In one embodiment, the aforementioned thermally expandable microspheres (B) preferably have an average particle diameter of from 1 μm to 100 μm, each of which has an outer shell coated with a liquid. The foregoing outer casing comprises a thermoplastic resin, and the softening point of the thermoplastic resin is higher than the initial boiling point (IBP) of the liquid. In an example, the thermoplastic resin may be, for example, a (meth)acrylonitrile polymer or a (meth)acrylonitrile copolymer, and specific examples thereof include vinyl halides, vinylidene halides, and vinylidene halides. , styrene monomers, (meth)acrylate monomers, vinyl acetate, butadiene, vinyl pyridine, chloroprene A (meth)acrylonitrile polymer or copolymer formed by copolymerizing a monomer such as chloroprene. In addition, the aforementioned thermoplastic resin may also be cross-linked with a crosslinking agent, and specific examples of suitable crosslinking agents are, for example, divinylbenzene, ethylene glycol di(meth)acrylate [ethylene glycol di (meth)acrylate], triethylene glycol di(meth)acrylate, trimethylol propane tri(meth)acrylate, 1 ,3-butylene glycol di(meth)acrylate, allyl (meth)acrylate, triacrylformal, tripropyl Alkenyl isocyanate (triallylisocyanurate) and the like. The crosslinking agent used above may be completely uncrosslinked or partially crosslinked.

Next, the liquid coated with the above thermoplastic resin may be, for example, a hydrocarbon having 6 to 12 carbon atoms, and specific examples thereof include hexane, heptane, isobutylene, isopentane, neopentane, cyclopropane, cyclobutane, Cycloheptane, cyclohexane, and the like.

Specific examples of the above-mentioned heat-expandable fine particles include, for example, Matsumoto Microsphere F and FN series products such as Microsphere F-30, F36, F-48, F-50, F-65, F-80, F-. 100, F-105, FN-100, FN-105, FN-180, etc. (above by Japan Matsumoto Oil & Fat Pharmaceutical Co., Ltd.); trade name DAIFORM microparticle products (Dainichiseika Color & Chemicals Mfg. Co., Ltd. )), the product name KUREHA microparticle product (manufactured by Kureha Co., Ltd.); the product name ADVANCELL series microparticle product (manufactured by Japan Sekisui Chemical Co., Ltd.); the trade name Expancel series microparticle product (made by AkzoNobel Co., Ltd.) or other equivalent properties product. The above-mentioned heat-expandable fine particles (B) may be used singly or in combination of plural kinds.

In general, the amount of the thermally expandable fine particles (B) used is 5 parts by weight to 20 parts by weight based on 100 parts by weight of the aqueous resin (A). If the amount of the heat-expandable fine particles (B) used is less than 5 parts by weight, the foam layer to be subsequently obtained may have disadvantages such as poor touch and insufficient lightness due to insufficient closed pores. If the amount of the heat-expandable fine particles (B) is more than 20 parts by weight, the foam layer obtained in the subsequent manner may be too dry due to excessive closed pores, and the touch is too dry, the softness is insufficient, the strength is not high, the dispersion is not easy, and the molding is not formed. Complete and other shortcomings.

Foaming aid (C)

In one embodiment, the foaming aid (C) suitable for use in the present invention is preferably a hydrocarbon solvent which is insoluble in water and whose volatilization rate is lower than the volatilization rate of water, and may be, for example, a carbon number of 5 to 17. The hydrocarbon solvent is preferably a hydrocarbon having 2 to 12 carbon atoms, and more preferably an isoparaffin (IP) solvent having 5 to 17 carbon atoms.

Specific examples of the above-mentioned suitable foaming auxiliary (C) include: trade name IPSOLVENT (for example, IP SOLVENT 1016, IP SOLVENT 1620, IP SOLVENT 2028, etc.) series products (Japan Idemitsu Kosan Co., Ltd.); trade name NA SOLVENT series products (Japan) Nippon Oil Co., Ltd.; trade name ISOPAR series products (made by ExxonMobil Chemical Co., USA). The above-mentioned foaming auxiliary (C) may be used singly or in combination of plural kinds. For example, the weight percentage (wt%) of IP SOLVENT 1016, IP SOLVENT 1620, and IP SOLVENT 2028 (manufactured by Nippon Ishko Co., Ltd.) may be, for example, 0/100/0 to 20/60/20.

In general, the amount of the foaming auxiliary (C) used is from 20 parts by weight to 150 parts by weight based on 100 parts by weight of the aqueous resin (A).

Here, the above-mentioned aqueous resin composition is used as a top coating to be applied to the above surface of the base fabric. When the base fabric is a resin film, only the top coat layer can be formed, and an under coating layer is not required. However, when the base fabric is a non-woven fabric or a fabric, the undercoat layer may be selectively formed in advance, which can effectively prevent the aqueous resin composition for top coating from penetrating the base fabric, thereby causing defects such as coating fabric which is not too hard and has poor touch. The situation happened. In one example, the amount of the foaming auxiliary (C) for top coating is from 20 parts by weight to 50 parts by weight, based on the amount of the aqueous resin (A), and is 20 parts by weight to 40 parts by weight. The serving is better.

If the amount of the foaming aid (C) used is less than 20 parts by weight, the subsequent The resulting foamed layer may have disadvantages such as rough surface, poor touch, and insufficient softness due to insufficient continuous pores. If the amount of the foaming aid (C) used exceeds 150 parts by weight, it is difficult to disperse and the foam layer obtained in the subsequent manner may be disadvantageous in that it is too soft and poorly formed due to excessive continuous pores.

Aqueous solution aqueous solution (D)

In one embodiment, the aqueous solution (D) of the bridging agent suitable for use in the present invention comprises 50 weight percent of a bridging agent, which may include, but is not limited to, a polycarbodiimide, a water-dispersible isocyanate compound (eg, a closed And unblocked isocyanate compounds, polyisocyanates, etc.), amine compounds (such as melamine), aziridine compounds (such as polyaziridine), epoxy resins, and the like Any combination. The above aqueous solution of the bridging agent (D) may be used singly or in combination of plural kinds.

In general, the amount of the aqueous solution of the bridging agent (D) is from 1 part by weight to 4 parts by weight based on 100 parts by weight of the aqueous resin (A). If the amount of the aqueous solution of the bridging agent (D) is less than 1 part by weight, the subsequently obtained foamed layer may have disadvantages such as insufficient strength. If the amount of the aqueous solution of the bridging agent (D) exceeds 4 parts by weight, the subsequently obtained foamed layer may have defects such as excessive hardness and poor touch.

Lanthanide additive (E)

In one embodiment, when the aqueous resin composition is used as the foaming layer for top coating, the lanthanide additive (E) may be selectively added to the first aqueous resin composition to improve the top coating. The feel of the bubble layer is relatively moist. The present invention does not limit the type of lanthanide additive (E), and various conventional lanthanide additions The agent (E) can be used, for example, eucalyptus oil or modified eucalyptus oil.

The above modified emu oil can be introduced, for example, at the side chain of the polysiloxane, at both ends or at one end to introduce an organic functional group to obtain a reactive or non-reactive organically modified eucalyptus oil.

The aforementioned organic functional group for modifying eucalyptus oil may include, but not limited to, an amino group, an epoxy group, a carboxyl group, a carbonyl group, an alkyl group, a polyether group, etc., and an amine group. Or a carbonyl group is preferred. Specific examples of suitable amine-based modified eucalyptus oils may include, but are not limited to, may include, but are not limited to, trade names SH29PA, SF8417, BY16-205, BY16-849, BY16-891, BY16-898, BY16-892, BY16-890 Commercial products such as BY16-872, BY16-893, BY16-203, FZ-3760, FZ-3785, and FZ-3789 (manufactured by Dow Corning Toray Co., Ltd.). Specific examples of suitable carbonyl-modified oxime oils may include, but are not limited to, commercially available products including, but not limited to, trade name SF8427 (manufactured by Dow Corning Toray Co., Ltd.).

In general, the amount of the lanthanoid-based additive (E) used may be, for example, 0.1 part by weight to 1.0 part by weight, based on 100 parts by weight of the aqueous resin (A), and preferably 0.1 part by weight to 0.5 part by weight. . If the lanthanide-based additive (E) is used in an amount of from 0.1 part by weight to 1.0 part by weight, the subsequently obtained foamed layer can be imparted with a wet touch. If the lanthanide-based additive (E) is not added, the touch of the subsequent heat-expandable fine particles (B) after foaming is relatively dry.

Additive (F)

In one embodiment, when the aqueous resin composition is used as a foaming layer for top coating, a surface flattening agent, an antifoaming agent, an adhesion promoter, a dye may be optionally added to the first aqueous resin composition. , dispersant, slip agent Additive (F) such as (slipping agent).

The surface flattening agent described above may be, for example, a fluorine-based surfactant, an ethylene-based surfactant, or an acryl-based surfactant. Specific examples of the fluorine-based surfactant to be used include, but are not limited to, trade names Flourate FC-430, FC-431 (above, manufactured by 3M), and trade names F top EF122A, 122B, 122C, 126, BL20 (above) Commercial products such as Tochem product). Specific examples of the above-mentioned vinyl-based surfactants include Antox SAD, Antox LMA-10 (Japan Emulsifier Co., Ltd.) and the like. Specific examples of the acryl-based surfactant to be used include, for example, Disrol H14-N, Disrol AQ-3 (Japan Emulsifier Co., Ltd.), and the like.

The above surface flattening agents may be used singly or in combination of plural kinds.

Specific examples of the antifoaming agent include compounds such as polyoxynoxy, higher alcohol, polyether, fatty acid ester, polyethylene glycol, and mineral oil. The above antifoaming agents may be used singly or in combination of plural kinds.

The above-mentioned adhesion aid may be, for example, a melamine compound and a silane-based compound, which functions to increase the adhesion between the aqueous resin composition and the base fabric, and specific examples of the melamine are, for example, a trade name Cymel-300. Commercial products such as Cymel-303 (manufactured by CYTEC), MW-30MH, MW-30, MS-11, MS-001, MX-750, and MX-706 (manufactured by Sanwa Chemical Co., Ltd.). Specific examples of the silane compound are, for example, vinyltrimethoxydecane, vinyltriethoxydecane, 3-(meth)acryloxypropyltrimethoxydecane, vinyltris(2-) Methoxyethoxy)decane, N-(2-aminoethyl)-3-aminopropylmethyldimethoxydecane, N-(2-aminoethyl)-3-aminopropyltrimethoxy Decane, 3-aminopropyltriethoxydecane, 3-glycidoxypropyltrimethoxydecane, 3-glycidoxypropylmethyldimethoxy Decane, 2-(3,4-epoxycyclohexyl)ethyltrimethoxydecane, 3-chloropropylmethyldimethoxydecane, 3-chloropropyltrimethoxydecane, 3-methylpropenyloxy Propyltrimethoxydecane, 3-thiolpropyltrimethoxydecane, bis-1,2-(trimethoxyindenyl)ethane, and the like. The above-mentioned adhesion aids may be used singly or in combination of plural kinds.

The above dye may be an inorganic dye or an organic dye. The inorganic dye is a metal compound such as a metal oxide or a metal salt, and specifically, for example, a metal oxide such as iron, cobalt, aluminum, cadmium, lead, copper, titanium, magnesium, chromium, lead, or antimony, and the foregoing a composite oxide of a metal. Specific examples of organic dyes are: CI Pigment Yellow 1,3,11,12,13,14,15,16,17,20,24,31,53,55,60,61,65,71,73,74,81 , 83,93,95,97,98,99,100,101,104,106,108,109,110,113,114,116,117,119,120,126,127,128,129,138,139,150,151,152,153,154,155,156,166,167,168,175; CI Pigment Orange 1,5,13,14,16,17,24,34,36,38,40,43,46,49,51,61,63, 64,71,73; CI Pigment Red 1,2,3,4,5,6,7,8,9,10,11,12,14,15,16,17,18,19,21,22,23 ,30,31,32,37,38,40,41,42,48:1,48:2,48:3,48:4,49:1,49:2,50:1,52:1,53 : 1,57,57: 1,57: 2,58: 2,58: 4,60: 1,63: 1,63: 2,64: 1,81: 1,83,88,90: 1,97,101,102,104,105,106,108,112,113,114,122,123,144,146,149,150,151,155,166,168,170,171,172,174,175,176,177,178,179,180,185,187,188,190,193,194,202,206,207,208,209,215,216,220,224,226,242,243,245,254,255,264,265 CI Pigment Violet 1,19,23,29,32,36,38,39; CI Pigment Blue 1,2,15,15:3,15:4,15:6,16,22,60,66;CI Pigment green 7,36,37; CI pigment brown 23,25,28; CI pigment black 1,7 and so on. The foregoing dyes may be used singly or in combination of plural kinds.

Specific examples of the above dispersing agent are: hydroxyethyl cellulose, cationized cellulose, hydroxymethyl cellulose, hydroxypropyl cellulose, guar gum, cationized guar gum, and xanthan gum. Polysaccharides such as alginate and cationized starch and derivatives thereof; polyethylenes such as phytic acid, di(polyoxyethylene) alkyl ether phosphate, and tris(polyoxyethylene) alkyl ether phosphate Poval and its phosphates. The above dispersing agents may be used singly or in combination of plural kinds.

Specific examples of the above-mentioned slip agent include an amino silicone emulsion (for example, trade name G-7103, manufactured by Rihua Chemical Co., Ltd.), a fluorine emulsion, In general, the amount of the additive (F) is from 0.1 part by weight to 4.0 parts by weight, based on the amount of the aqueous resin (A) used, and preferably from 0.2 part by weight to 2.0 parts by weight, and further preferably 0.3 part by weight. More preferably, it is a part by weight to 1.0 part by weight.

It should be noted here that the above aqueous resin composition containing the lanthanide-based additive (E) is used as a top coat. In other embodiments, an under coating step and a preheating treatment may be selectively performed before the dry coating step using the aqueous resin composition for top coating (or the first aqueous resin composition). The aqueous resin composition for the primer (or the second aqueous resin composition) is applied to the surface of the base fabric first, and the moisture contained in the aqueous resin composition for the primer is removed by preheating treatment. In order to form an undercoat layer (or second coating layer) on the surface of the base fabric.

The aqueous resin composition for primer coating may further contain an aqueous resin (A), a thermally expandable fine particle (B), a foaming auxiliary (C), and an aqueous solution of the bridging agent (D), but excluding the use of the lanthanide additive (E) . If the foam layer for the primer is used The use of the lanthanide-based additive (E) impairs the adhesion of the foamed layer for primer coating to the foamed layer for top coating. The amount of the aqueous resin (A), the thermally expandable fine particles (B), and the aqueous solution of the bridging agent (D) used in the base coating is 100 parts by weight based on the amount of the aqueous resin (A), and is composed of the above-mentioned aqueous resin for top coating. The amount of the materials used is the same, and the amount of the foaming auxiliary (C) for the undercoating is preferably from 80 parts by weight to 150 parts by weight, more preferably from 100 parts by weight to 140 parts by weight.

In the above primer coating step, the aqueous resin composition for primer coating is applied to at least one surface of the base fabric, and the preheating treatment treats the aqueous resin composition for primer coating to remove the water contained therein. A second coating layer was formed on the surface of the base fabric without foaming the heat-expandable particles (B).

Second, carry out multi-stage heat treatment

Next, the base fabric coated with the above aqueous resin composition is subjected to a multi-stage heat treatment as shown in step 110. The aforementioned multi-stage heat treatment may include, but is not limited to, performing the first heat treatment, the second heat treatment, and the third heat treatment. Wherein, the first heat treatment is for removing moisture of the aqueous resin composition, as shown in step 111. The second heat treatment cures the aqueous resin (A) and forms a coating layer as shown in step 113. As for the third heat treatment, the coating layer is subjected to a higher temperature treatment to volatilize the foaming aid (C) to form a plurality of continuous pores, and at the same time or after, the heat-expandable particles (B) are coated. The liquid volatilizes and expands to form a plurality of closed pores, such that the coating layer forms a foamed layer having a plurality of closed pores and continuous pores, as shown in step 115. The aforementioned first heat treatment, second heat treatment and third heat treatment can be carried out in an oven.

In an embodiment, the third temperature of the third heat treatment is high. At a second temperature of the second heat treatment, the second temperature is again higher than the first temperature of the first heat treatment. Next, at the first temperature and the second temperature, the above-mentioned heat-expandable fine particles (B) do not expand. Specifically, the first temperature is from 80 ° C to 100 ° C, the second temperature is from 100 ° C to 120 ° C, and the third temperature is from 120 ° C to 150 ° C.

It can be understood that the dry coating step, the first heat treatment and the second heat treatment may be performed once or repeatedly to form one or more coating layers without affecting the touch and softness. . Specifically, the foam layer for top coating may form one or more first coating layers; likewise, the coating layer for primer coating may also form one or more second coating layers, in an embodiment. The fourth temperature used in the preheating treatment is the same as the first temperature in the first heat treatment. In this embodiment, the pre-formed coating layer for the primer on the base fabric can effectively prevent the aqueous resin composition for the subsequent top coating from penetrating the base fabric, thereby causing the obtained coating fabric to be too hard and not pleasant to touch. Good conditions such as good happen. After forming the plurality of second coating layers and/or the plurality of first coating layers, the third heat treatment is simultaneously performed, for example, at 120 ° C to 130 ° C for 5 seconds to 1 minute to form a velvet coating. Fabric.

The velvet leather coated fabric obtained by the third heat treatment has a foamed layer having a plurality of closed pores and a plurality of continuous pores, as shown in step 117, wherein the closed pores are composed of heat-expandable particles (B). The coated liquid volatilizes and expands, and the aforementioned continuous pores are formed by volatilization of the foaming aid (C). Since the obtained textured leather coated fabric is composed of the aforementioned foamed layer and the base fabric, the foamed layer and the base fabric are directly bonded without any adhesive layer.

In the above embodiment, the third heat treatment described above is more selective Applying at least one heat imprinting treatment to the first coating layer by using an iron without any pattern or a second embossing wheel having a second convex pattern, so that the first coating layer forms a foam having a raised second convex pattern The layer (also known as the Emboss roll heating process or the Emboss roll patterning process), wherein the raised second convex pattern and the first convex pattern may be the same or different. In general, the raised portion of the aforementioned foamed layer may have no pattern (i.e., embossed by an iron) or have a raised pattern (i.e., heat-embossed via a second embossing wheel). The ridge pattern has a plurality of closed pores and a plurality of continuous pores, wherein the continuous pores are formed by volatilization of a foaming aid (C), and the continuous pores are formed by volatilization of a liquid coated with the heat-expandable microparticles (B).

It is to be noted that the method for producing the textured fabric of the present invention excludes the use of an adhesive, and the buffing treatment is required to obtain a textured fabric, even without synthetic skin. The equipment can also be easily processed, which simplifies the process and is environmentally friendly. In addition, in other examples, depending on the process requirements, the velvet-dyed fabric obtained as described above may also be selectively subjected to conventional scouring treatment to enhance the surface velvet to have a sable leather feel.

The velvet leather coated fabric obtained through the above steps not only has better fleece touch and softness, but also can be carried out in a large machine, thereby greatly reducing equipment cost and saving process time.

The following examples are provided to illustrate the application of the present invention, and are not intended to limit the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention.

Preparation of anionic waterborne polyurethane resin Example 1

In this embodiment, 20 parts by weight of Microsphere F-80 (B-3) (manufactured by Nippon Matsumoto Oil Pharmaceutical Co., Ltd.), 40 parts by weight of IP SOLVENT 1620 (C-2) (manufactured by Nippon Ishko Co., Ltd.), and 4 parts by weight 50 wt% of the aqueous solution of the bridging agent (D) and 0.3 part by weight of the fluorenone (E) were uniformly dispersed in 100 parts by weight of Evafanol HA-15 (A-1) (manufactured by Nippon Chemical Co., Ltd.), and the dispersibility thereof was examined. Next, the aqueous resin composition for top coating was uniformly applied to the surface of the base fabric by a dry coating method at a coating amount of 60 g/m ² . Then, the base on which the above aqueous resin composition was applied was placed in an oven at about 90 ° C for about 5 minutes to remove moisture of the aqueous resin composition. Next, Evafanol HA-15 (A-1) is cured at a temperature of from 100 ° C to 120 ° C to form a coating layer. Thereafter, the base fabric having the coating layer is further treated at 130 ° C for 1 minute to form the top coating foam layer, and the top coated foam layer and the base fabric form a velvet coated fabric. (Example 1). Thereafter, the surface of the velvet leather, the foaming property, the touch, the softness, and the like of the velvet-coated fabric were examined, and the detection method will be described later.

Example 2

The method for producing the velvet leather coated fabric of Example 1 differs in that Example 2 changes the type and amount of the raw material, and the formulation and test results are shown in Table 1.

Example 3

In this example, 15 parts by weight of Microsphere F-50 (B-2) (manufactured by Nippon Matsumoto Oil Co., Ltd.) and 60 parts by weight of IP SOLVENT 1620 (C-2) (manufactured by Nippon Ishko Co., Ltd.) were uniformly stirred and dispersed. The solution stability, dispersibility, and the like were measured in 100 parts by weight of Evafanol HA-15 (A-1) (manufactured by Nippon Chemical Co., Ltd.). Next, the aqueous resin composition for undercoating was uniformly applied to the surface of the base fabric by a dry coating method at a coating amount of 60 g/m ² . Then, the base on which the above aqueous resin composition is applied is placed in an oven at 80 ° C to 100 ° C to remove moisture of the aqueous resin composition. Next, Evafanol HA-15 (A-1) is cured at a temperature of from 100 ° C to 120 ° C to form a coating layer. Thereafter, the base fabric having the coating layer is further treated in an oven at 130 ° C for 1 minute to form the foamed layer of the primer coating layer, and the foamed layer and the base fabric of the primer coating are coated with the felt fabric. Cloth fabric (Example 3). Thereafter, the surface, foaming property, feel, softness, and the like of the velvet leather coated fabric were measured, and the formulation and test results are shown in Table 1, and the detection method will be described later.

Examples 4 to 6

In the same manner as in the production method of the velvet leather coated fabric of Example 3, the difference between the types and the amounts of the raw materials in Examples 4 to 6 was changed, and the formulation and test results are shown in Table 1.

Comparative Examples 1 to 17

The manufacturing method of the velvet leather coated fabric of the first embodiment is different in that the comparative examples 1 to 17 change the kind and amount of the raw materials, and the base fabric having the coating layer is further treated in an oven at 130 ° C for 1 minute and / Or use the 120 ° C iron or the second embossing wheel to heat the imprinting process for 5 seconds, the formulation and test results are shown in Table 2.

Evaluate the effectiveness of aqueous resin compositions

The aqueous resin compositions prepared in the foregoing Examples 1 to 6 and Comparative Examples 1 to 17 were uniformly stirred and dispersed, and observed by the naked eye, according to the following test. Standard, the solution stability of the aqueous resin composition obtained in the above examples was evaluated, and the dispersibility of the aqueous resin composition obtained in the above Examples and Comparative Examples was evaluated, wherein each sample was subjected to at least 3 tests, and the evaluation results were evaluated. As shown in Tables 1 and 2.

○: Good

△: ordinary

×: bad

Evaluation of the effectiveness of the textured leather coated fabric

The velvet leather coated fabrics obtained in the foregoing Examples 1 to 6 and Comparative Examples 1 to 17 were evaluated by visual observation and hand touch feeling, and the velvet leather coatings obtained in the above Examples and Comparative Examples were evaluated according to the following test standards. Cloth fabric, its surface, foaming, touch and softness, each of which has been tested at least 3 times, and the evaluation results are shown in Tables 1 and 2.

○: It is better (the surface of the suede leather is finer, foaming is better, the touch is moister and softer)

△: Ordinary (wool surface, foaming, touch, softness)

×: Poor (the surface of the suede is thicker, the foaming is poor, the touch is dry, and the softness is poor)

As a result of combining the first table and the second table, it is understood that when the aqueous resin composition uses both the aqueous resin (A), the thermally expandable fine particles (B), the foaming auxiliary agent (C), and the aqueous solution of the bridging agent (D), it is formed. The aqueous resin composition has better solution stability and dispersibility, and the obtained velvet leather coated fabric has better surface texture, foaming property, touch and softness, and the undercoat layer thereof. also Has a better feel. Secondly, when the aqueous resin composition is further added with the lanthanide additive (E), the top coat layer of the velvet leather coated fabric thus obtained is more moist and has a better touch, so that the present invention can be achieved. purpose.

It should be noted that the present invention describes the velvet dye-coated fabric of the present invention and a method for producing the same by using specific compounds, compositions, reaction conditions, processes, analytical methods or specific instruments as examples, but in the technical field to which the present invention pertains It is to be understood by those skilled in the art that the present invention is not limited thereto, and other compositions, compositions, reaction conditions, and other methods, compositions, reaction conditions, and the method of producing the same may be employed without departing from the spirit and scope of the present invention. Process, analytical method or instrumentation.

According to the embodiment of the present invention described above, the velvet-dyed coated fabric of the present invention and the method for producing the same have advantages in that the aqueous resin (A), the thermally expandable fine particles (B), the foaming auxiliary agent (C), and the like are used. The aqueous resin composition is applied to the surface of the base fabric, and the textured leather coated fabric can be easily obtained by a multi-stage heat treatment. Since the manufacturing method of the present invention eliminates the use of the adhesive, the amount of the solvent is extremely small, and the polishing process is not required, and the manufacturing equipment without the synthetic skin can be easily processed, so that the process can be simplified and environmentally friendly.

The present invention has been disclosed in the above embodiments, and is not intended to limit the present invention. Any one of ordinary skill in the art to which the present invention pertains can make various changes without departing from the spirit and scope of the invention. The scope of protection of the present invention is therefore defined by the scope of the appended claims.

100‧‧‧ method

101‧‧‧Step of applying a dry coating step to coat the first aqueous resin composition on at least one surface of the base fabric

110‧‧‧Steps for multi-stage heat treatment of the base fabric coated with the first aqueous resin composition

111‧‧‧Steps of performing the first heat treatment to remove the moisture of the first aqueous resin composition

113‧‧‧Step of performing a second heat treatment to cure the aqueous resin of the first aqueous resin composition and form a first coating layer

115‧‧‧Step of performing a third heat treatment on the first coating layer to form the first coating layer to form a foamed layer having a plurality of closed pores and continuous pores

117‧‧‧Steps for forming a velvet-coated fabric

The above and other objects, features, advantages and embodiments of the present invention are made. The description of the drawings is as follows: Fig. 1 is a partial flow chart showing a method of manufacturing a textured leather coated fabric according to an embodiment of the present invention.

100‧‧‧ method

101‧‧‧Step of applying a dry coating step to coat the first aqueous resin composition on at least one surface of the base fabric

110‧‧‧Steps for multi-stage heat treatment of the base fabric coated with the first aqueous resin composition

111‧‧‧Steps of performing the first heat treatment to remove the moisture of the first aqueous resin composition

113‧‧‧Step of performing a second heat treatment to cure the aqueous resin of the first aqueous resin composition and form a first coating layer

115‧‧‧Step of performing a third heat treatment on the first coating layer to form the first coating layer to form a foamed layer having a plurality of closed pores and continuous pores

117‧‧‧Steps for forming a velvet-coated fabric

Claims (18)

A method for producing a velvet leather coated fabric, comprising: performing a dry coating step of coating a first aqueous resin composition on at least one surface of a base fabric, wherein the first aqueous resin composition comprises at least An aqueous resin (A); a plurality of heat-expandable particles (B), wherein the heat-expandable particles (B) have an average particle diameter of from 1 μm to 100 μm, and each of the heat-expandable particles (B) has a shell Coating a liquid, the outer casing comprises a thermoplastic resin, and the softening point of the thermoplastic resin is higher than the initial boiling point (IBP) of the liquid; a foaming auxiliary (C), wherein the foaming auxiliary ( C) comprising a hydrocarbon solvent having a carbon number of 5 to 17, the hydrocarbon solvent being insoluble in water, and the volatilization rate of the hydrocarbon solvent is lower than the evaporation rate of water; and an aqueous solution of the bridging agent (D), And wherein the heat-expandable fine particles (B), the foaming auxiliary agent (C), and the aqueous solution of the bridging agent (D) are uniformly dispersed in the aqueous resin (A), and based on the amount of the aqueous resin (A) used. The amount of the heat-expandable particles (B) used is 100 parts by weight. 0 parts by weight to 20 parts by weight, the foaming auxiliary (C) is used in an amount of 20 parts by weight to 150 parts by weight, and the aqueous solution (D) of the bridging agent is used in an amount of 1 part by weight to 4 parts by weight; The base fabric coated with the first aqueous resin composition is subjected to a multi-stage heat treatment to form the textured leather coated fabric, wherein the multi-stage heat treatment comprises at least: Performing a first heat treatment to remove moisture of the first aqueous resin composition; performing a second heat treatment to cure the aqueous resin (A) and form a first coating layer; and the first coating layer The cloth layer is subjected to a third heat treatment to form a foamed layer, wherein the foamed layer has a plurality of closed pores and a plurality of continuous pores, and the closed pores are formed by expansion of the heat-expandable particles (B). And the continuous pores are formed by volatilization of the foaming aid (C), and wherein the textured fabric is composed of the foamed layer and the base fabric, the foamed layer and the base fabric There is direct bonding between the layers and no adhesive layer. The method for producing a textured leather coated fabric according to claim 1, wherein the base fabric is a non-woven fabric, a woven fabric or a resin film. The method for producing a textured leather coated fabric according to claim 1, further comprising at least the lanthanide additive (E), wherein the foaming auxiliary agent (C) is used based on 100 parts by weight of the aqueous resin (A). The amount used is from 20 parts by weight to 50 parts by weight, and the lanthanide-based additive (E) is used in an amount of from 0.1 part by weight to 1.0 part by weight. The method for producing a textured leather coated fabric according to claim 1, wherein the aqueous resin (A) is selected from the group consisting of an aqueous polyurethane (PU) resin, an aqueous acrylic resin, and any combination thereof. One group. The method for producing a textured leather coated fabric according to claim 1, wherein the thermoplastic resin comprises a (meth)acrylonitrile polymer or a (meth)acrylonitrile copolymer. The method for producing a textured leather coated fabric according to claim 1, wherein the liquid is a hydrocarbon having 6 to 12 carbon atoms. The method for producing a textured leather coated fabric according to claim 1, wherein the foaming auxiliary (C) is an isoparaffin (IP) solvent having a carbon number of 5 to 17. The method for producing a textured leather coated fabric according to claim 1, wherein the aqueous solution of the bridging agent (D) comprises 50% by weight of a bridging agent. The method for producing a textured leather coated fabric according to claim 8, wherein the bridging agent is selected from the group consisting of polycarbodiimide, water-dispersed isocyanate compound, amine compound, aziridine compound, and ring. An oxygen resin compound and a combination of any of the above combinations. The method for producing a textured leather coated fabric according to claim 1, wherein the first aqueous resin composition is applied to the surface in an amount of from 60 g/m ² to 90 g/m ² . A method for producing a textured leather coated fabric according to claim 1, Wherein the third temperature system of the third heat treatment is higher than the second temperature of the second heat treatment, the second temperature is higher than the first temperature of the first heat treatment, and at the first temperature The heat-expandable particles (B) do not swell at the second temperature. The method for producing a textured leather coated fabric according to claim 10, wherein the first temperature is from 80 ° C to 100 ° C, the second temperature is from 100 ° C to 120 ° C, and the third temperature is from 120 ° C to 150 ° C. °C. The method for producing a textured leather coated fabric according to claim 1, wherein before the drying the coating step, at least comprising: performing a primer coating step of applying a second aqueous resin composition to the base At least one surface of the cloth, wherein the second aqueous resin composition comprises at least the aqueous resin (A), the heat-expandable particles (B), the foaming aid (C), and the aqueous solution (D) of the bridging agent, The heat-expandable fine particles (B), the foaming auxiliary agent (C), and the aqueous solution of the bridging agent (D) are uniformly dispersed in the aqueous resin (A), and the amount of the aqueous resin (A) used is 100. The heat-expandable fine particles (B) are used in an amount of 5 parts by weight to 20 parts by weight, the foaming auxiliary (C) is used in an amount of 50 parts by weight to 150 parts by weight, and the aqueous solution of the bridging agent (D) Used in an amount of from 2 parts by weight to 4 parts by weight; and a preheating treatment of the second aqueous resin composition to remove moisture of the second aqueous resin composition and form a surface on the surface of the base fabric a second coating layer, wherein the fourth temperature of the preheating treatment is the first one of the first heating treatment To the same degree. The method for producing a textured leather coated fabric according to claim 1, wherein the dry coating step further comprises: applying an embossing wheel coating treatment to the first coating layer by using a first embossing wheel; a convex pattern of the first embossing wheel is embossed on a portion of the first coating layer, wherein the portion forms the foamed layer having a ridge pattern, and the portion has the closed holes and the continuous holes . The method for producing a textured leather coated fabric according to claim 14, wherein the third heat treatment is performed at the third temperature of 120 ° C to 130 ° C for 5 seconds to 1 minute. The method for producing a textured leather coated fabric according to claim 1, wherein the dry coating step further comprises: performing an embossing wheel coating process by using a first embossing wheel having a first convex pattern, The aqueous resin composition is imprinted on the base fabric by the first embossing wheel to form the aqueous resin composition having the first convex pattern. The method for producing a textured leather coated fabric according to claim 1, wherein the third heat treatment further comprises: applying the first coating layer by using a second embossing wheel having a second convex pattern. And at least one heating imprinting process, the first coating layer is formed with the foam layer having the second convex pattern of the ridge, wherein the second convex pattern is the same as or different from the first convex pattern. A velvet-dyed coated fabric obtained by the method according to any one of claims 1 to 17, wherein the velvet-dyed fabric is foamed from a base fabric and at least one The layer is composed of a plurality of foamed layers having a plurality of closed pores and a plurality of continuous pores, and the base fabric is directly bonded to the at least one foamed layer and there is no adhesive layer.