JP2005126563A - Adhesive for thermal fusion bonding, and adhesive cloth - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an adhesive for thermal fusion bonding which, even when subjected to high-temperature thermal fusion bonding for a long time, gives an adhesive interlining with sufficient adhesive power. <P>SOLUTION: The adhesive for thermal fusion bonding comprises an aqueous thermoplastic resin dispersion prepared by heating a thermoplastic resin to its softening point or higher and dispersing the softened thermoplastic resin in an aqueous medium and contains inorganic particles having a wt. average particle size of 0.001-20 μm. The adhesive is thermally fusion bonded to the surface of a base fabric, giving an adhesive cloth. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an adhesive for heat fusion and an adhesive cloth. More specifically, the present invention relates to an adhesive for thermal fusion including an aqueous thermoplastic resin dispersion and specific inorganic particles, and an adhesive fabric in which the adhesive is thermally fused to the surface of a base fabric.

  Conventionally, various functions such as oil resistance, solvent resistance, chemical resistance, abrasion resistance, gas barrier property, adhesiveness, etc. are formed by coating thermoplastic resin on various substrates and forming a coating film. Giving sex has been done. Among them, fabrics made of woven fabrics, nonwoven fabrics, etc. are used as base fabrics, and adhesive fabrics made by heat-sealing thermoplastic resins on their surfaces by various methods are mainly used in the field of clothing. It is used as an adhesive interlining. When the thermoplastic resin heat-sealed to the surface of the base fabric is heated again during use, it acts as an adhesive for heat-sealing and heat-bonds the base fabric to the surface.

  The role of the adhesive cloth, especially the adhesive interlining, is to supplement the performance of the outer surface mainly to finish the clothes three-dimensionally, making it easy to sew and at the same time not to lose shape due to wearing, washing, dry cleaning, etc. Examples thereof include imparting shape stability. Usually used for men's suits, suits for women, cuffs, frontal appearance, etc. The required properties differ depending on the use and place of use, etc. The most suitable adhesive interlining is selected in consideration of various conditions such as the method and the type of base fabric.

  At this time, as the thermoplastic resin, mechanical pulverization is performed by mechanically pulverizing a thermoplastic resin such as a copolymerized polyamide resin, a copolymerized polyester resin, an ethylene-vinyl acetate copolymer resin, a polyethylene resin, and a polyurethane resin at room temperature. A powdery thermoplastic resin obtained by pulverization by a method, a freeze pulverization method in which pulverization is performed under freezing, or the like is used. However, the weight average of the resin powder is particularly important in order to obtain an adhesive interlining that does not impair the aesthetic functions required for clothes, the texture necessary to obtain a beautiful silhouette, and the aesthetic formability that gives drape. The particle size is preferably 20 μm or less, and it is very difficult to produce such a fine resin powder by the mechanical pulverization method or the freeze pulverization method.

  Accordingly, an adhesive for heat fusion containing an aqueous thermoplastic resin dispersion obtained by heating a thermoplastic resin to a temperature equal to or higher than the softening point of the resin and dispersing the resin in an aqueous medium in the softened state, and An adhesive cloth (Patent Document 1) that is heat-sealed to the surface of a base cloth is disclosed.

  Also, a first aqueous dispersion in which a first resin that is at least one of a resin obtained by polymerizing a vinyl group-containing monomer and a urethane resin is dispersed in a first aqueous dispersion medium, a copolymerized polyamide resin, and a copolymerized polyester resin And a second aqueous dispersion in which a second resin, which is at least one of the above, is dispersed in a second aqueous dispersion medium, and an aqueous dispersion for fiber processing, and an adhesion obtained by thermally fusing it to the surface of the base fabric A cloth (Patent Document 2) is disclosed.

JP2001-19937 JP 2001-303446 A

  When heat-adhesive adhesive containing an aqueous dispersion of thermoplastic resin is heat-sealed to the surface of the base fabric, depending on the heat-sealing method and the type of base fabric, especially when heat-sealing is performed at a high temperature for a long time In addition, since the melt viscosity of the thermoplastic resin is lowered, there is a problem in that the thermoplastic resin may come off from the outer surface of the base fabric to the lining, and thus sufficient adhesive force may not be obtained. Accordingly, an object of the present invention is an adhesive interlining which does not impair the texture of clothes, maintains shape stability and sufficiently satisfies the drape property even when applied to a thin fabric, and heat fusion can be performed at a high temperature. An object of the present invention is to provide an adhesive for heat fusion for obtaining an adhesive interlining having a sufficient adhesive force even when performed for a long time, and an adhesive cloth in which the adhesive is heat-sealed to the surface of a base cloth.

  That is, according to the first aspect of the present invention, there is provided an adhesive for heat fusion for heat-sealing a base fabric to a surface material, and the thermoplastic resin is heated to a temperature equal to or higher than the softening point of the resin and softened. There is provided an adhesive for heat fusion containing an aqueous dispersion of a thermoplastic resin obtained by dispersing in an aqueous medium in a state and inorganic particles having a weight average particle diameter of 0.001 to 20 μm.

  Furthermore, according to the second aspect of the present invention, the thermoplastic resin aqueous dispersion obtained by heating the thermoplastic resin to a temperature equal to or higher than the softening point of the resin and dispersing it in an aqueous medium in a softened state, and weight An adhesive cloth is provided in which an adhesive for heat fusion containing inorganic particles having an average particle diameter of 0.001 to 20 μm is heat-sealed to the surface of the base cloth.

  The heat-bonding adhesive of the present invention can be heat-sealed to the surface of various base fabrics, such as those made of woven fabrics and nonwoven fabrics, using conventional methods, Since the melt viscosity at the time of fusion can be adjusted, the thermoplastic resin can be heat-sealed with sufficient adhesive force without slipping out from the surface of the base fabric to the lining. In addition, the adhesive cloth obtained in this way is suitably used as an adhesive interlining that does not impair the texture of the thin fabric.

  The thermoplastic resin used in the present invention is not particularly limited, and examples thereof include a copolymerized polyamide resin, a copolymerized polyester resin, an ethylene-vinyl acetate copolymer resin, a polyethylene resin, and a polyurethane resin. These may be used alone or in combination. In particular, when applied to an adhesive fabric as an adhesive for heat fusion, the texture of the thin fabric is kept good, and from the viewpoints of dry cleaning resistance and washing resistance, copolymerized polyamide resins, copolymerized polyester resins, and their Mixtures are preferably used.

As the copolymerized polyamide resin, it is not particularly limited, for _{example, - [NH (CH 2)} 5 CO] -, - [NH (CH 2) 6 NHCO (CH 2) 4 CO] -, - [NH (CH ₂ ) ₆ NHCO (CH ₂ ) ₈ CO]-,-[NH (CH ₂ ) ₁₀ CO]-and-[NH (CH ₂ ) ₁₁ CO]- And a copolymerized polyamide resin having a structural unit as a structural unit. Specific examples thereof include 6/66 copolymer nylon, 6/610 copolymer nylon, 6/11 copolymer nylon, 6/12 copolymer nylon, 6/66/610 copolymer nylon, and 6/66/11 copolymer. Polymerized nylon, 6/66/12 copolymer nylon, 6/66/11/12 copolymer nylon, 6/66/610/11/12 copolymer nylon, and copolymers of the above copolymer nylon with polyester and polyalkylene ether glycol Examples thereof include a polyamide elastomer which is a polymer. Among these, 6/66/11 copolymer nylon, 6/66/12 copolymer nylon, and 6/66/11/12 copolymer nylon are preferable, and 6/66/12 copolymer nylon is more preferable.

  The copolyester resin is not particularly limited. For example, an acid component containing terephthalic acid and isophthalic acid, ethylene glycol, diethylene glycol, polyethylene glycol, 1,4-butanediol, or 1,6-hexane. A copolyester resin obtained by a polycondensation reaction with a diol component containing a diol can be mentioned. Specific examples thereof include terephthalic acid / isophthalic acid / 1,4-butanediol copolymer polyester resin, terephthalic acid / isophthalic acid / 1,6-hexanediol copolymer polyester resin, terephthalic acid / isophthalic acid / polyethylene glycol copolymer Polymerized polyester resin, terephthalic acid / isophthalic acid / ethylene glycol / 1,4-butanediol copolymerized polyester resin, terephthalic acid / isophthalic acid / adipic acid / 1,4-butanediol copolymerized polyester resin and terephthalic acid / isophthalic acid / Examples thereof include 1,4-butanediol / diethylene glycol copolymer polyester resin. Among them, terephthalic acid / isophthalic acid / 1,4-butanediol copolymerized polyester resin, terephthalic acid / isophthalic acid / ethylene glycol / 1,4-butanediol copolymerized polyester resin, and terephthalic acid / isophthalic acid / 1,4-butane A diol / diethylene glycol copolymer polyester resin is preferable, and a terephthalic acid / isophthalic acid / 1,4-butanediol copolymer polyester resin is more preferable.

  The method for producing the thermoplastic resin aqueous dispersion at this time is not particularly limited, and a known method can be used. For example, (1) when the thermoplastic resin is a polyethylene resin having no terminal functional group, an ethylene-vinyl acetate copolymer resin, or the like, a surfactant or a dispersant at a temperature above the softening point of the resin in an aqueous medium (2) When the thermoplastic resin is a copolymerized polyamide resin or copolymer polyester resin having a carboxyl group at the terminal, the above method or a basic substance is used. Examples of the method include a method of stirring and applying a shearing force at a temperature equal to or higher than the softening point of the resin in an aqueous medium containing a surfactant or a dispersant as necessary.

  Examples of the surfactant include anionic surfactants such as rosinate, fatty acid salt and alkylbenzene sulfonate, ethylene oxide propylene oxide block copolymer, polyoxyethylene alkyl ether, glycerin fatty acid ester and polyoxyethylene fatty acid ethanolamide. And nonionic surfactants such as amphoteric surfactants.

  Examples of the dispersant include polyacrylates, polystyrene sulfonates, salts of styrene maleic anhydride copolymers, polymer dispersants such as polyvinyl alcohol and hydroxyethyl cellulose, and inorganic dispersants such as alumina sol, silica sol, and calcium phosphate. Can be mentioned.

  Examples of the basic substance include alkali metal hydroxides such as sodium hydroxide and potassium hydroxide, ammonia and amine compounds. In particular, alkali metal hydroxides such as sodium hydroxide and potassium hydroxide are preferably used in terms of dispersion effect.

  In the production method, good results can be obtained by dispersing in an aqueous medium at a temperature equal to or higher than the softening point of the thermoplastic resin, usually 50 to 300 ° C, preferably 70 to 220 ° C. If the temperature is lower than 50 ° C., the thermoplastic resin is not sufficiently softened in the aqueous medium, so that uniform dispersion may not be achieved. If the temperature is higher than 300 ° C., the thermoplastic resin may be deteriorated.

  Moreover, the usage-amount of the water as an aqueous medium used in the said manufacturing method is 30-1500 weight part normally with respect to 100 weight part of thermoplastic resins, Preferably it is 70-500 weight part. If the amount of water used is less than 30 parts by weight, the thermoplastic resin may not be sufficiently dispersed in water, and the concentration of the resulting aqueous thermoplastic resin dispersion may exceed even when used in excess of 1500 parts by weight. It becomes thin and is not preferable in use.

  The weight average particle diameter of the resin in the aqueous thermoplastic resin dispersion obtained by the above production method can be adjusted to any particle diameter, but is usually 0.1 to 20 μm, preferably 0.1 to 10 μm. . If the weight average particle diameter of the resin in the aqueous thermoplastic resin dispersion is less than 0.1 μm, the particles are likely to aggregate and easily gel, and it may be difficult to achieve a high resin concentration. If the weight average particle diameter of the resin in the aqueous thermoplastic resin dispersion exceeds 20 μm, the pores of the coating screen are likely to be clogged, and the adhesive force of the adhesive cloth may be reduced or the texture may be impaired. is there.

  In the heat-bonding adhesive of the present invention, the aqueous thermoplastic resin dispersion obtained as described above further contains inorganic particles having a weight average particle diameter of 0.001 to 20 μm. .

  The inorganic particles used in the present invention are not particularly limited as long as they have a predetermined weight average particle diameter, and particularly include silicon compounds, aluminum compounds, magnesium compounds, sodium compounds, calcium compounds, and titanium compounds. Specific examples include silicon oxide, white carbon, zeolite, aluminum oxide, calcium carbonate, talc, mica, magnesium oxide, titanium oxide, and smectite. Of these, silicon oxide, aluminum oxide, calcium carbonate, titanium oxide and smectite are particularly preferably used. These can be used alone or in admixture of two or more, and can also be used in the form of silica sol or alumina sol as a powder or dispersed in a dispersion medium such as water or alcohol.

  The weight average particle diameter of the inorganic particles used in the present invention is preferably 0.001 to 20 μm, more preferably 0.005 to 10 μm. If the weight average particle diameter is less than 0.001 μm, it may be difficult to uniformly disperse the inorganic particles in the adhesive for heat fusion. On the other hand, if the weight average particle diameter exceeds 20 μm, the melt viscosity may not be improved greatly.

  In the heat sealing adhesive of the present invention, the content of the inorganic particles is 0.1 to 300 parts by weight with respect to 100 parts by weight of the thermoplastic resin from the viewpoint of melt viscosity and adhesiveness. The amount is preferably 1 to 80 parts by weight.

  Although it does not specifically limit as a manufacturing method of the adhesive agent for heat fusion of this invention, For example, (1) Manufacture a thermoplastic resin aqueous dispersion using the resin which melt-mixed the thermoplastic resin and the said inorganic particle beforehand. (2) A method in which the inorganic particles are added to the aqueous thermoplastic resin dispersion and the mixture is stirred at room temperature. (3) Dispersed beforehand in an aqueous dispersion medium such as water or alcohol. Examples include a method of adding the inorganic particles or a mixture thereof to a thermoplastic resin aqueous dispersion and stirring the mixture at room temperature.

  The adhesive for heat fusion of the present invention is usually used by blending a viscosity modifier and adjusting the viscosity to 5000 to 50000 mPa · sec in order to make the application workability to the base fabric and a good application state. The blending amount of the viscosity modifier is blended so as to be in the above-described viscosity range, but is usually 0.01 to 5 parts by weight with respect to 100 parts by weight of the aqueous thermoplastic resin dispersion.

  Examples of the viscosity modifier include natural or synthetic polymer thickeners such as polyacrylamide, sodium polyacrylate, carboxymethyl cellulose, carboxyethyl cellulose, hydroxyethyl cellulose, polyacrylic ester, polyethylene oxide and ethylene oxide propylene oxide block copolymer. Is mentioned. Further, if necessary, a plasticizer, a dispersion aid, an antifoaming agent, a softening agent, a stabilizer, an antifungal agent and the like may be blended.

  Furthermore, the obtained thermoplastic resin aqueous dispersion may be adjusted to an arbitrary concentration using an appropriate concentration means such as using a semipermeable membrane, or the obtained thermoplastic resin aqueous dispersion may be used as it is. Alternatively, after solid-liquid separation by centrifugation, filtration, or the like, it can be used after being finely powdered by a drying means such as spray drying.

  The base fabric used for the adhesive fabric of the present invention is not particularly limited, and fabric materials made of various fibrous materials or fabrics can be used. Examples of materials include natural fibers such as cotton, hemp, silk and wool, regenerated fibers such as rayon and cupra, semi-synthetic fibers such as acetate and triacetate, and polyester, nylon, acrylic, urethane, polypropylene, polyethylene and polyvinyl chloride. Synthetic fibers such as Examples of the woven fabric include woven fabrics and knitted fabrics made from the above materials. Moreover, as a nonwoven fabric, the thing etc. which made the said material intertwined by the chemical method, the mechanical method, or those combinations were mentioned.

  The method for heat-sealing the heat-bonding adhesive of the present invention to the surface of the base fabric is not particularly limited, and includes a dipping method, a gravure roll method, a double dot method, a paste dot method, a powder dot method, a spray method, and the like. A known method can be used. In the heat sealing adhesive of the present invention, a double dot method and a paste dot method are preferably used.

  For example, according to the paste dot system, the adhesive for heat fusion of the present invention is injected into a rotary screen having a large number of pores, extruded from the pores of the rotary screen onto a base fabric, and applied in a dot shape. be able to.

The pore diameter of the rotary screen is usually about 200 μm, but a screen of about 50 to 200 μm can be used by using the heat-bonding adhesive of the present invention. Moreover, although the number of dots is usually 50 to 120 / cm ² with respect to the base fabric, it is possible to apply a maximum of about 4000 / cm ² by using the adhesive for heat fusion of the present invention. Become. The coating amount is usually 10 to ²⁰ g / m ² , but sufficient adhesive strength can be obtained even with a coating amount of 5 g / m ² or less, depending on the type of base fabric, by using the heat-bonding adhesive of the present invention.

  By heating the base fabric to which the adhesive for thermal fusion is applied at a temperature of 80 to 150 ° C., the adhesive for thermal fusion is dried and melted and fused to the base fabric to obtain the adhesive fabric of the present invention. The obtained adhesive cloth can be bonded to various types of surface material by using an iron or a heat press as an adhesive interlining, for example, and when used for a thin fabric, particularly a thin fabric for women, it is finished with a very good texture.

  The present invention will be specifically described below with reference to production examples, examples and comparative examples of the present invention, but the present invention is not limited to these examples.

Production Example 1
In a pressure-resistant autoclave with an inner diameter of 700 mm, a height of 1500 mm, and an inner volume of 450 L equipped with a turbine type stirring blade having a diameter of 350 mm, 150 kg of 6/66/12 copolymer nylon (softening point 130 ° C.), 149.6 kg of water, Sodium hydroxide (0.4 kg) was charged and sealed. Next, the inside of the autoclave was heated up to 150 ° C. by starting the stirrer and circulating the heating oil through the jacket portion while stirring at 150 rpm. The mixture was further stirred for 30 minutes while maintaining the internal temperature at 150 ° C., and then the contents were cooled to 50 ° C. to obtain a copolymer polyamide resin aqueous dispersion having a resin concentration of 50% by weight.

  When the weight average particle size of the obtained aqueous copolymerized polyamide resin dispersion was measured with a laser diffraction particle size distribution analyzer (manufactured by Shimadzu Corporation, SALD 2000), the weight average particle size was 1.2 μm.

Production Example 2
A terephthalic acid / isophthalic acid / 1,4-butanediol copolymerized polyester (softening point 120 ° C.) in a pressure-resistant autoclave with an inner diameter of 700 mm, a height of 1500 mm and an inner volume of 450 L equipped with a 350 mm diameter turbine-type stirring blade 150 kg, 120 kg of water and 30 kg of ethylene oxide / propylene oxide block copolymer were charged and sealed. Next, the inside of the autoclave was heated up to 150 ° C. by starting the stirrer and circulating the heating oil through the jacket portion while stirring at 150 rpm. The mixture was further stirred for 30 minutes while maintaining the internal temperature at 150 ° C., and then the contents were cooled to 50 ° C. to obtain an aqueous copolymer polyester resin dispersion having a resin concentration of 50% by weight.

  When the weight average particle size of the obtained aqueous copolymerized polyester resin dispersion was measured with a laser diffraction type particle size distribution analyzer (manufactured by Shimadzu Corporation, SALD2000), the weight average particle size was 2.5 μm.

Example 1
To 100 parts by weight of the aqueous copolymerized polyamide resin dispersion obtained in Production Example 1, an aqueous dispersion of silicon oxide particles (manufactured by Nissan Chemical Industries, Ltd., product name: Snowtech 40, weight average particle size: 0.01) ~ 0.02 μm, solid content concentration: 40% by weight) 20 parts by weight and 0.2 parts by weight of sodium polyacrylate were added and mixed to obtain the heat-sealing adhesive of the present invention.

Using a screen with a pore diameter of 80 μm, the obtained heat-bonding adhesive was formed into dots on the surface of a nylon nonwoven fabric having a basis weight of 25 g / m ² with a dot number of 300 / cm ² and a coating amount of 5 g / m ^2. Applied. Subsequently, it was dried and fused at 150 ° C. for 1 minute to obtain an adhesive fabric of the present invention.

Example 2
To 100 parts by weight of the aqueous copolymerized polyester resin dispersion obtained in Production Example 2, an aqueous dispersion of silicon oxide particles (manufactured by Nissan Chemical Industries, Ltd., product name: Snowtech 40, weight average particle diameter: 0.01) ~ 0.02 μm, solid content concentration: 40% by weight) 20 parts by weight and 0.2 parts by weight of sodium polyacrylate were added and mixed to obtain the heat-sealing adhesive of the present invention.

Using the screen with a pore diameter of 80 μm, the obtained heat-bonding adhesive was formed into dots on the surface of a polyester nonwoven fabric having a basis weight of 25 g / m ² with a dot number of 300 / cm ² and a coating amount of 5 g / m ^2. Applied. Subsequently, it was dried and fused at 150 ° C. for 1 minute to obtain an adhesive fabric of the present invention.

Example 3
An aqueous dispersion of silicon oxide particles (Nissan Chemical Co., Ltd.) was added to a mixture of 50 parts by weight of the aqueous copolymer polyamide resin dispersion obtained in Production Example 1 and 50 parts by weight of the aqueous copolymer polyester resin dispersion obtained in Production Example 2. Industrial Co., Ltd., product name: Snowtech 40, weight average particle size: 0.01 to 0.02 μm, solid content concentration: 40% by weight) 20 parts by weight and sodium polyacrylate 0.2 parts by weight, By mixing, the adhesive for heat fusion of the present invention was obtained.

Using a screen with a pore diameter of 80 μm, the obtained heat-bonding adhesive was formed into dots on the surface of a nylon nonwoven fabric having a basis weight of 25 g / m ² with a dot number of 300 / cm ² and a coating amount of 5 g / m ^2. Applied. Subsequently, it was dried and fused at 150 ° C. for 1 minute to obtain an adhesive fabric of the present invention.

Example 4
In Example 2, an aqueous dispersion of silicon oxide particles (manufactured by Nissan Chemical Industries, Ltd., product name: Snowtech 40, weight average particle size: 0.01 to 0.02 μm, solid content concentration: 40% by weight) 20 Instead of parts by weight, an aqueous dispersion of aluminum oxide particles (manufactured by Nissan Chemical Industries, Ltd., product name: alumina sol 200, weight average particle size: 0.01 to 0.1 μm, solid content concentration: 10% by weight) 50 Except having used the weight part, it carried out similarly to Example 2, and obtained the adhesive agent and adhesive cloth for heat fusion of this invention.

Example 5
In Example 1, an aqueous dispersion of silicon oxide particles (manufactured by Nissan Chemical Industries, Ltd., product name: Snowtech 40, weight average particle size: 0.01 to 0.02 μm, solid content concentration: 40% by weight) 20 In place of parts by weight, this was the same as in Example 1 except that 20 parts by weight of calcium carbonate (manufactured by Nitto Flour Chemical Co., Ltd., product name: NS # 3000, weight average particle size: 0.74 μm) was used. An adhesive for heat fusion and an adhesive cloth of the invention were obtained.

Example 6
In Example 1, an aqueous dispersion of silicon oxide particles (manufactured by Nissan Chemical Industries, Ltd., product name: Snowtech 40, weight average particle size: 0.01 to 0.02 μm, solid content concentration: 40% by weight) 20 It replaced with a weight part, and it carried out similarly to Example 1 except having used 20 weight part of titanium oxide (Ishihara Sangyo Co., Ltd. product name: A-100, weight average particle diameter: 0.15 micrometer). An adhesive for heat fusion and an adhesive cloth were obtained.

Example 7
In Example 1, an aqueous dispersion of silicon oxide particles (manufactured by Nissan Chemical Industries, Ltd., product name: Snowtech 40, weight average particle size: 0.01 to 0.02 μm, solid content concentration: 40% by weight) 20 The heat-sealing adhesive of the present invention was the same as in Example 1 except that 20 parts by weight of smectite (Kunimine Kogyo Co., Ltd., product name: Kunipia F) previously dispersed in water was used instead of parts by weight. And an adhesive cloth was obtained. When the weight average particle diameter of the used smectite was measured with a dynamic light scattering photometer (manufactured by Otsuka Electronics Co., Ltd., DLS700), the weight average particle diameter was 0.01 to 0.5 μm.

Comparative Example 1
In Example 1, an aqueous dispersion of silicon oxide particles (manufactured by Nissan Chemical Industries, Ltd., product name: Snowtech 40, weight average particle size: 0.01 to 0.02 μm, solid content concentration: 40% by weight) 20 Except not using a weight part, it carried out similarly to Example 1, and obtained the adhesive agent and adhesive fabric for heat fusion.

Comparative Example 2
In Example 2, an aqueous dispersion of silicon oxide particles (manufactured by Nissan Chemical Industries, Ltd., product name: Snowtech 40, weight average particle size: 0.01 to 0.02 μm, solid content concentration: 40% by weight) 20 Except not using a weight part, it carried out similarly to Example 2, and obtained the adhesive agent and adhesive cloth for heat fusion.

Comparative Example 3
In Example 3, an aqueous dispersion of silicon oxide particles (manufactured by Nissan Chemical Industries, Ltd., product name: Snowtech 40, weight average particle size: 0.01 to 0.02 μm, solid content concentration: 40% by weight) 20 Except not using a weight part, it carried out similarly to Example 3, and obtained the adhesive agent and adhesive cloth for heat fusion.

  The melt viscosity of the adhesives for heat fusion obtained in Examples and Comparative Examples and the peel strength of adhesive fabrics obtained by thermally fusing the adhesives to the surface of the base fabric were evaluated by the following methods. The results are shown in Table 1.

MFR (melt flow rate)
10 g of the obtained adhesive for thermal fusion was put into a petri dish made of polytetrafluoroethylene, dried at 50 ° C. for 14 hours, and then MFR (160 ° C./weighted 10 kg) using a flow tester (manufactured by Shimadzu Corporation). ) Was measured.

Adhesiveness The obtained adhesive cloth and cotton surface material were bonded using a hot press under the conditions of 130 ° C., 200 kPa, 15 seconds to obtain a test cloth. The obtained test cloth was cut into a width of 25 mm in accordance with an adhesion strength test method (JIS L1086), and then the peel strength was obtained under the conditions of a tensile speed and 100 mm / min with a tensile tester. The obtained peel strength was determined according to the following criteria.
○: 500 g (4.9 N) / 25 mm or more Δ: 100 g (0.98 N) / 25 mm or more 500 g (4.9 N) / less than 25 mm ×: less than 100 g (0.98 N) / 25 mm

  As shown in Table 1, the MFR values of the adhesives for heat fusion of Examples 1 to 7 are small compared to the corresponding comparative examples, that is, the melt viscosity is high, and the peel strength of the adhesive cloth is sufficient. It can be seen that it has high strength.

  According to the present invention, even when applied to a thin fabric, it is an adhesive interlining that does not impair the texture of clothing, maintains shape stability, and sufficiently satisfies drape, and has a long heat-sealing time. Even in such a case, it is possible to provide an adhesive for thermal fusion for obtaining an adhesive interlining having sufficient adhesive strength, and an adhesive fabric in which the adhesive is thermally fused to the surface of the base fabric.

Claims (9)

  An adhesive for heat fusion comprising an aqueous thermoplastic resin dispersion obtained by heating a thermoplastic resin to a temperature equal to or higher than the softening point of the resin and dispersing it in an aqueous medium in a softened state. A heat-sealing adhesive comprising inorganic particles having a diameter of 0.001 to 20 μm.   The adhesive for heat fusion according to claim 1, wherein the content of the inorganic particles is 0.1 to 300 parts by weight with respect to 100 parts by weight of the thermoplastic resin.   The adhesive for heat fusion according to claim 1 or 2, wherein the inorganic particles are at least one selected from the group consisting of silicon compounds, aluminum compounds, magnesium compounds, sodium compounds, calcium compounds and titanium compounds.   The adhesive for heat fusion according to claim 1 or 2, wherein the inorganic particles are at least one selected from the group consisting of silicon oxide, aluminum oxide, calcium carbonate, titanium oxide, and smectite.   The heat-bonding adhesive according to any one of claims 1 to 4, wherein a weight-average particle diameter of the resin particles in the aqueous thermoplastic resin dispersion is 0.001 to 20 µm.   The adhesive for heat fusion according to any one of claims 1 to 5, wherein the aqueous thermoplastic resin dispersion includes a copolymerized polyamide resin aqueous dispersion, a copolymerized polyester resin aqueous dispersion, or a mixture thereof. The copolymerized polyamide resin is-[NH (CH ₂ ) ₅ CO]-,-[NH (CH ₂ ) ₆ NHCO (CH ₂ ) ₄ CO]-,-[NH (CH ₂ ) ₆ NHCO (CH ₂ ). _The resin having at least two kinds selected from the group consisting of ₈ CO]-,-[NH (CH ₂ ) ₁₀ CO]-and-[NH (CH ₂ ) ₁₁ CO]-as structural units. Adhesive for heat fusion.   The copolymer polyester resin is obtained by a polycondensation reaction between an acid component containing terephthalic acid and isophthalic acid and a diol component containing ethylene glycol, diethylene glycol, polyethylene glycol, 1,4-butanediol or 1,6-hexanediol. The heat-bonding adhesive according to claim 6, which is a resin to be used.   An adhesive fabric in which the heat-bonding adhesive according to any one of claims 1 to 8 is heat-sealed to the surface of a base fabric.