JP2005264385A - Fusible interlining - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fusible interlining to be bonded to the face fabric of a garment or the like, effective for maintaining the bonding power with the face fabric. <P>SOLUTION: The fusible interlining is provided with a second resin layer comprising heat adhesive resin on the surface of a base fabric via a first resin layer. The first resin layer comprises a mixture of non-adhesive resin and fine particles comprising synthetic resin substantially free from an additive. The non-adhesive resin is preferably cross-linked with self-linking acrylic ester-based resin emulsion. It is favorable that the fine particles comprising synthetic resin substantially free from an additive comprises a crystalline polyester resin. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an adhesive interlining for adhering to a surface material such as clothes.

  2. Description of the Related Art Conventionally, an adhesive interlining in which a thermal adhesive resin is attached in a dot shape to a base fabric such as a nonwoven fabric, a knitted fabric or a woven fabric is known. When this adhesive interlining is bonded to the outer surface, etc., the melted thermal adhesive resin soaks into the base fabric side that constitutes the interlining, so that sufficient adhesive strength with the outer surface cannot be obtained, or it has melted. In some cases, the heat-adhesive resin oozes out to the opposite surface through the base fabric (hereinafter referred to as reverse stain).

As a technology to reduce this reverse stain, non-adhesive resin that has a relatively high glass transition temperature (T _g ) and is difficult to melt and flow at the temperature that adheres to the outer surface is printed in dots, and the thermal adhesive resin is deposited on this print. Adhesive interlinings are also known. A technique in which a heat-adhesive resin and a non-adhesive resin are combined in this way and the heat-adhesive resin that melts and flows at the time of heat-adhesion is blocked by the non-adhesive resin is disclosed in, for example, Japanese Patent Laid-Open No. 5-230771 Has been.

  On the other hand, the surface of the adhesive bonded to the above-described adhesive interlining has also been diversified, and various proposals have been made in order to further improve the adhesive strength. In Japanese Patent Laid-Open No. 2001-315232 (Patent Document 2), the present applicant is an adhesive cloth having a second resin layer on the surface of a base cloth with a first resin layer interposed therebetween, and the first resin layer is crosslinkable. An adhesive cloth is proposed which is composed of a mixture of a resin and a thermoplastic fine particle resin (corresponding to the above-mentioned non-adhesive resin), and the second resin layer is made of a thermoplastic resin (corresponding to the above-mentioned thermoadhesive resin).

  Moreover, the adhesive composition for thermal bonding for use in various fiber processing is distributed as an aqueous dispersion containing the above-mentioned fine particle resin without using an organic solvent, in consideration of the environment that has been increasing in recent years. Yes. As an example, Japanese Patent Application Laid-Open No. 2001-310944 (Patent Document 3) discloses an aqueous dispersion medium containing an ethylene oxide-propylene oxide copolymer having a predetermined weight average molecular weight and, if desired, a nonionic surfactant. In particular, there is disclosed a technique for dispersing fine particles made of various polyester resins, preferably copolymer polyester resins obtained by polycondensation reaction of dicarboxylic acid and glycol. According to this technique, it is possible to provide an adhesive composition that is excellent in static stability (dispersibility) and can improve adhesiveness and water resistance without specially modifying the polyester resin.

  Further, in Japanese Patent Application Laid-Open No. 2003-226756 (Patent Document 4), as a resin used for a hot melt adhesive, it is easily melted by heating and has good wettability with respect to an adherend, and has an adhesive force. A spherical polyester resin particle dispersion for an adhesive that can achieve the purpose of being high and having excellent durability such as water resistance and solvent resistance is shown. In Patent Document 4, a crystalline polyester resin containing an alkyl group and / or an alkenyl group and a carboxyl group is used as a spherical resin particle.

  Moreover, in addition to the adhesive composition using these polyester resins, for example, in Japanese Patent Application Laid-Open No. 2001-303446 (Patent Document 5), the first is a resin obtained by polymerizing a vinyl group-containing monomer and a urethane resin. A first aqueous dispersion in which one resin is dispersed in a first aqueous dispersion medium, and a second resin in which at least one of a copolymerized polyamide resin and a copolymerized polyester resin is dispersed in a second aqueous dispersion medium. An aqueous dispersion for fiber processing obtained by mixing an aqueous dispersion is disclosed. In preparing the second dispersion, it is disclosed that in a softened state of the resin at a temperature equal to or higher than the softening point of the second resin, a shearing force is applied to the resin and an aqueous medium containing the additives shown below to disperse the resin. is there. Surfactants used in this additive include anionic surfactants such as rosinate, fatty acid salt, alkylbenzene sulfonate, ethylene oxide propylene oxide block copolymer, polyoxyethylene alkyl ether, glycerin fatty acid ester, polyoxy Nonionic surfactants such as ethylene fatty acid ethanolamide, amphoteric surfactants and the like are exemplified. Furthermore, as the dispersant used here, polyacrylic acid salt, polystyrene sulfonate, salt of styrene maleic anhydride copolymer, polymer dispersant such as polyvinyl alcohol, hydroxyethyl cellulose, alumina sol, silica sol, calcium phosphate, etc. An inorganic dispersing agent is illustrated. In addition, basic substances are listed from the viewpoint of dispersion effect, and alkali metal hydroxides such as sodium hydroxide and potassium hydroxide, ammonia, amine compounds, and the like are preferably used.

Japanese Patent Application Laid-Open No. 5-230771 ([Claims], [Prior Art] [FIG. 1]) JP 2001-315232 A ([Claims], [FIG. 1]) JP 2001-310944 A ([Claims], [Means for Solving the Problems]) JP 2003-226756 A ([Claims], [Prior Art], [Means for Solving the Problems]) JP 2001-303446 A ([Claims], [0027] to [0031])

  As described in the background art, the reverse stain reduction when using the adhesive interlining is performed by sequentially depositing the first resin layer and the second resin layer on the surface of the base fabric constituting the interlining. This can be achieved by adopting a structure that prevents penetration of the second resin layer in which the first resin layer is melted and softened (see Patent Document 1 and Patent Document 2). The adhesive strength of the adhesive interlining is achieved by selecting not only the adhesive resin that constitutes the second resin layer, but also the non-adhesive resin that constitutes the first resin layer that does not soften when bonded to the surface. It is.

  In selecting this non-adhesive resin, the present applicant pays attention to the adhesiveness of the adhesive interface between the first resin layer and the second resin layer after melt softening, particularly the composition of the first resin layer, after washing with water, or We intensively studied the technology to reduce the adhesive strength reduction after dry cleaning. As a result, the configuration of the first resin layer disclosed in Patent Document 2 proposed by the applicant already referred to, that is, a predetermined component of fine particles made of synthetic resin forming the first resin layer (referred to herein as an additive). The present invention has been completed on the basis of the knowledge that the above mentioned influence on the decrease in the adhesive strength. Accordingly, an object of the present invention is to provide an adhesive interlining that is effective in maintaining the adhesive strength with the outer surface even after washing with water or dry cleaning.

  In order to achieve this object, according to the configuration of the present invention, in the adhesive interlining having the second resin layer made of the thermal adhesive resin on the surface of the base fabric via the first resin layer, the first resin described above is used. The layer is characterized by comprising a mixture of non-adhesive resin and fine particles made of a synthetic resin substantially free of additives. Here, "substantially free of additives" consists only of compounds essential for the polymerization of the synthetic resin constituting the fine particles, as disclosed in Patent Document 3 or Patent Document 5 described above, It means an additive which is obtained without actively containing an additive for the purpose of standing stability of an aqueous dispersion of fine particles, that is, a surfactant, a dispersant or a basic substance.

  In carrying out the present invention, it is preferable that the non-adhesive resin described above is crosslinked with a self-crosslinking acrylic ester resin emulsion.

  Furthermore, it is preferable that the fine particles made of the above-described synthetic resin containing substantially no additive are composed of a crystalline polyester resin.

  In addition, the average particle size of the fine particles described above is preferably 0.01 to 10 μm.

  According to the configuration of the adhesive interlining according to the present invention, as described above, the first resin layer is a mixture of a non-adhesive resin and fine particles made of a synthetic resin substantially free of additives, for example, the surface and After the thermal bonding, it is possible to improve the decrease in the adhesive strength between the first resin layer and the second resin layer due to water washing or dry cleaning.

Hereinafter, embodiments of the adhesive interlining according to the present invention will be described in detail. Conventionally known non-woven fabrics, woven fabrics, knitted fabrics, and composite fabrics of these materials can be used as the base fabric constituting the adhesive interlining. In particular, non-woven fabrics are widely used because they are excellent in productivity and economy. For example, fibers represented by point-seal non-woven fabrics, in which the thermal bonding part of the ceiling is provided with a density and area according to the design with a hot embossing roll, for example. An adhesive nonwoven fabric, a needle punch, a nonwoven fabric that has been physically entangled with a high-pressure water stream, or the like can be used. The fabric used as such a base fabric is preferably a polyester fiber, a nylon fiber, an acrylic fiber, or the like. These base fabrics can be configured with any suitable surface density depending on the shape retention effect on the outer material, and may be 10 to 50 g / m ² , more preferably 15 to 40 g / m ² .

Next, a mixture of non-adhesive resin and fine particles made of a synthetic resin substantially containing no additive is applied in the form of dots on the surface of such a base fabric to form a first resin layer. This coating formation can be performed using a conventionally known roll printer or the like as disclosed in the above-mentioned Patent Document 1 and the like, and the dot diameter and the number of dots may be arbitrarily designed. At this time, various shapes such as a circle, an ellipse, and a polygon such as a triangle can be selected as the dot shape. Further, in order to make the texture of the adhesive interlining flexible, the diameter of the dots is preferably 0.1 to 1.0 mm, more preferably 0.2 to 0.5 mm, and the number of dots is 10 It is desirable to be about ~ 250 / cm ² . Further, the ratio of the total area occupied by the dot-shaped first resin layer on the surface of the base fabric is preferably about 6 to 40%, more preferably 10 to 20%.

  Next, the composition of the first resin layer described above will be described in detail. As described above, the first resin layer is formed by applying a paste of a mixture of non-adhesive resin and fine particles made of synthetic resin substantially free of additives, and heat-treated at a predetermined temperature. Through such a process, a dot-shaped first resin layer is formed as the solid content of the paste.

First, as the above-mentioned non-adhesive resin, a conventionally well-known crosslinkable resin disclosed in the above-mentioned Patent Document 2 is used. As such a resin, an acrylic resin, a urethane resin or the like can be used, but an acrylic resin having excellent weather resistance and a relatively high glass transition temperature (T _g ), particularly a resin having a self-crosslinkable acrylic resin is preferable. . In addition, these acrylic resins and urethane resins can be obtained as so-called emulsions, but according to the experiments of the inventors of the present application, in the paste for forming the first resin layer, emulsions of these non-adhesive resins The composition contained in the composition exhibits only the “additive” referred to in the present invention, that is, the dispersibility of the fine particles which is substantially negligible.

  Next, the fine particles that characterize the present invention will be described. As already described, “substantially free of additives” means only the compounds essential for the polymerization of the synthetic resin constituting the fine particles, and the surfactants and dispersants described as the background art of this specification. Or the thing which does not contain the additive which has dispersibility with respect to microparticles | fine-particles, such as a basic substance. As a synthetic resin constituting such fine particles, even if these additives are used in the synthesis process, they can be used in the present invention as long as they do not elute in the emulsion containing the non-adhesive resin described above. it can. Therefore, it is preferable that the synthetic resin constituting the fine particles is a polyester resin or a polyamide-based resin that does not substantially contain the additive. In particular, among the polyester resins, in the crystalline polyester disclosed in Patent Document 4, the residual amount of the additive dissolved in water is 1% by weight or less, usually about 0.2 to 0.3% by weight. Therefore, it can be suitably used in the present invention.

  The melting point of the resin composing such fine particles is desirably higher than the melting point of the adhesive resin composing the second resin layer described later. In the same manner as described above, when the adhesive interlining is used (when the thermoadhesive resin constituting the second resin layer of the interlining is melt fluidized), the first resin layer may block the thermal adhesive resin in the state. it can. In contrast, when the melting point of the resin constituting the fine particles is lower than the melting point of the adhesive resin constituting the second resin layer, when the adhesive interlining is used, And at least both the resin constituting the fine particles located at the interface between the first resin layer and the second resin layer are melted, and at the time of subsequent solidification, these resins are substantially integrated to form an anchor shape and bonded. It will contribute to the improvement of strength. Therefore, the weight mixing ratio as the solid content with the fine particles in the first resin layer formed on the adhesive interlining is preferably 20 to 80% by weight, more preferably 40 to 60% by weight. That is, the adhesive strength to the outer surface is achieved by taking the weight mixing ratio of the fine particles relatively large within the range and making the melting point of the resin constituting the fine particles lower than the melting point of the adhesive resin constituting the second resin layer. Although improvement can be aimed at, if it exceeds the above 80% by weight, there is a possibility of causing a reverse stain phenomenon. Furthermore, if the amount of fine particles is reduced below the preferred range of the weight mixing ratio, only an effect of avoiding the reverse spot phenomenon can be expected.

  Moreover, about the microparticles | fine-particles used by this invention, the thing of the characteristic similar to patent document 2 can be used except not containing the additive mentioned above substantially. First, the average particle size of the fine particles is determined by the dispersibility of the paste prepared by mixing the non-adhesive resin emulsion and the fine particles, and the adhesion between the first resin layer and the second resin layer after thermal bonding to the outer surface. In order to ensure, 0.01-10 micrometers is preferable and 0.01-1 micrometer is more preferable.

  By adopting the various forms described above, the first resin layer is deposited on the surface of the base fabric in a predetermined dot shape, and then the second resin layer made of the thermoadhesive resin is deposited on the first resin layer. Is done. This second resin layer may be formed by coating in the form of a film on the first resin layer, or as disclosed in Patent Document 1, immediately after the first resin layer is applied and formed, the surface portion of the layer The thermal adhesive resin powder that becomes the second resin layer may be adhered using the tackiness of the. As such a thermoadhesive resin, those having a melting point of 80 to 150 ° C. can be used, and various commercially available hot melt powders can be used. Specifically, a polyamide-based resin, a polyester-based resin, a polyolefin-based resin, a polyurethane-based resin, and the like are suitable, and the average particle size as a powder is preferably 50 to 300 μm, more preferably 100 to 200 μm.

  Examples of the present invention will be described below. In the following description, in order to understand the present invention, materials, shapes, arrangement relationships, numerical conditions, and other specific conditions are exemplified, but the present invention is not limited only to these specific conditions. Any suitable design changes and modifications can be made within the scope of the present invention.

(Example)
As a base fabric, a woven fabric having a surface density of 22 g / m ^{2 made} of polyester processed yarn (86 longitudinal strikes / inch, 59 transverse strikes / inch) was prepared. Next, as a paste for forming the first resin layer, a commercially available self-crosslinking acrylic ester resin emulsion (T _g = 31 ° C. (by differential thermal measurement method)) 30% by weight and an additive substantially Fine particles composed of crystalline polyester resin not contained (average particle size 0.5 μm, T _g = 13 ° C. (by differential calorimetry), melting point = 123 ° C. (by differential calorimetry), weight composition ratio: 1, 5-pentanediol / trimethylpropane / terephthalic acid / dodecenyl succinic anhydride = 37/2/57/4) 70% by weight were prepared by mixing. Next, this paste was screen-printed at a density of 112 pieces / cm ^{2 on} the above-described base fabric with a circular dot shape of φ0.35 mm. Subsequently, in a state where the dots are not dried and have tackiness, a commercially available polyamide-based hot melt powder (melting point 120 ° C. (according to differential calorimetry)) is uniformly sprayed on the base fabric to obtain an excess hot melt powder. After the removal, self-crosslinking and drying are performed by passing through a dryer at 170 ° C., the first resin layer is applied in an amount of about 4.0 g / m ² , and the second resin layer is applied in an amount of about 7.0 g / m ² . It was obtained interfacing according to the embodiment where m ^2. Incidentally, when the fine particles prepared and prepared at this time were examined, an evaporation residue of about 0.3% by weight with respect to water was observed.

(Comparative Examples 1-8)
Next, in the above-described examples, the paste prepared for forming the first resin layer was added to a polyoxyethylene-polyoxypropylene glycol-based “Adeka Pluronic F108” (Asahi Denka Kogyo Co., Ltd.) Co., Ltd., product name), or “Adeka Pluronic P103” (Asahi Denka Kogyo Co., Ltd., product name) was added in a predetermined amount to be described in detail later to obtain adhesive interlinings according to Comparative Examples 1-8. . In all of the adhesive interlinings according to the comparative examples, the deposition amount of the first resin layer was unified to about 4.0 g / m ² , and the deposition amount of the second resin layer was unified to about 7.0 g / m ² .

(Adhesive strength evaluation method)
The adhesive cores of Examples and Comparative Examples 1 to 8 obtained in this way and a wool gab having a surface density of 410 g / m ² were prepared as surface materials. Next, the surface on which the first resin layer and the second resin layer of each adhesive interlining are formed is superposed on this surface and bonded under the conditions of a temperature of 130 ° C., a pressure of 0.29 MPa, and a press time of 10 seconds, 17 cm × A test piece cut to a size of 12 cm was obtained. Thereafter, each test piece was cut into a tape shape having a width of 5 cm and a length of 12 cm, and left in a standard state (25 ° C., relative humidity 60%) for 12 hours. Using this as a measurement sample, the adhesive surface was peeled off at a tensile speed of 300 mm / min with a tensile tester (manufactured by Orientec Co., Ltd.), and the average value obtained by measuring three times in total was taken as the initial adhesive strength.

(Laundry test method)
Moreover, about each sample mentioned above, the adhesive strength after washing by water washing or dry cleaning was measured by the above-mentioned method. First, after washing the test piece described above in the standard state for 12 hours, the total mass of the load cloth and the test piece prepared separately is 600 g, the detergent concentration is 48 g with respect to 32 L of water, and the water temperature is 40 ° C. ± 3. Washing is performed with an automatic inversion washing machine under the conditions of ℃ and washing time of 90 minutes. Next, the test piece in this state is rinsed, flatly dried through centrifugal dehydration, dried, and left in a standard state for 12 hours, cut into a tape shape as described above, and the adhesive surface is peeled off by a tensile tester. It was set as the adhesive strength after washing as a point average value.

  Furthermore, dry cleaning using “PARKREN” was performed on each of the above-mentioned test pieces after bonding with a commercial dry cleaner. The implementation conditions were a total mass of 400 g of load cloth and test piece, main wash 6 min, drainage 1.5 min, drainage 2 min, deceleration 0.5 min, 60 ° C. drying 10.5 min and deodorization 2 min as one cycle, After repeating this for 3 cycles, the test piece was allowed to stand for 12 hours in a standard state, cut into a tape shape in the same manner as described above, and the adhesion surface was peeled off using a tensile tester. The three-point average value of such measurements was taken as the post-dry cleaning adhesive strength (hereinafter also referred to as post-DC adhesive strength).

  Table 1 shows the evaluation results of the initial adhesive strength, the adhesive strength after washing with water, and the adhesive strength after dry cleaning of the samples according to Examples and Comparative Examples 1 to 8 thus obtained. In the table, the presence or absence of the additive in the first resin layer is also shown, and for those containing the additive, the addition amount of the additive with respect to the crystalline polyester resin which is fine particles is shown by weight%. Further, for the adhesive strength after water washing and the adhesive strength after dry cleaning of each sample, percentages relative to the initial adhesive strength are also shown in parentheses.

First, as can be understood from Table 1 above, from the comparison between the evaluation results of the samples according to the examples and the evaluation results of Comparative Examples 1 to 4, the adhesive strength after water washing and the adhesive strength after DC are the absolute adhesion. The samples according to the examples were consistently superior in strength, and the adhesive strengths after washing in Comparative Examples 1 to 4 were lowered as the amount of additive added to the comparative examples increased. Moreover, the same tendency becomes clear also in Comparative Examples 5 to 8 to which other additives are applied, and by applying the configuration of the present invention to the first resin layer, improvement in adhesive strength reduction after washing with water or after dry cleaning is achieved. It was found that can be realized.

Claims (4)

In the adhesive interlining having a second resin layer made of a heat-bonding resin through a first resin layer on the surface of the base fabric, the first resin layer is made of a non-adhesive resin and a synthetic resin substantially free of additives. An adhesive interlining comprising a mixture of fine particles. The adhesive interlining according to claim 1, wherein the non-adhesive resin is formed by crosslinking a self-crosslinking acrylic ester resin emulsion. The adhesive interlining according to claim 1 or 2, wherein the fine particles made of a synthetic resin substantially free of additives are made of a crystalline polyester resin. The adhesive interlining according to any one of claims 1 to 3, wherein the fine particles made of a synthetic resin substantially free of additives have an average particle diameter of 0.01 to 10 µm.