Adhesive interlining
The adhesive interlining with specific resin and fiber combinations addresses biodegradability issues by maintaining tear strength and adhesion durability, ensuring favorable texture and adhesion properties.
Patent Information
- Authority / Receiving Office
- EP · EP
- Patent Type
- Applications
- Current Assignee / Owner
- NITTO BOSEKI CO LTD
- Filing Date
- 2024-09-02
- Publication Date
- 2026-06-10
AI Technical Summary
Biodegradable adhesive interlinings face challenges in maintaining favorable tear strength, texture, and adhesion durability due to low heat resistance, especially during processing and adhesion to adherends.
An adhesive interlining composed of a polylactic acid fiber base material with a first resin portion containing a biodegradable polyester with a melting point of 100 to 180°C and a second resin portion with a melting point of 80 to 180°C, having a melting point difference of 0 to 70°C, and a polylactic acid fiber melting point difference of 15°C or more, ensuring favorable properties.
The interlining achieves biodegradability while maintaining favorable tear strength, texture, and adhesion durability, with tear strengths of 0.5 N/25.4 mm or more and adhesion strengths of 80 cN/25.4 mm or more, even after laundering.
Smart Images
Figure SREP0001 
Figure SREP0002
Abstract
Description
Technical Field
[0001] One aspect of the present invention relates to an adhesive interlining and the like.Background Art
[0002] When sewing clothes, an adhesive interlining for adhering to an adherend such as a fabric may be used from the viewpoint of preventing loss of shape and enhancing shape retention. As an adhesive interlining, a member is known that includes a fiber base material and a resin portion (a resin portion for adhesion to an adherend) provided in a dot pattern on the surface of the fiber base material (see, for example, Patent Literature 1 below).Citation List Patent Literature
[0003] Patent Literature 1: Japanese Unexamined Patent Publication No. 2007-211365Summary of Invention Technical Problem
[0004] In recent years, there has been a strong demand in the industry to reduce environmental impact and ensure sustainable production and consumption patterns, and the use of biodegradable members is being considered. Therefore, it is conceivable to use a biodegradable member in an adhesive interlining. However, in an adhesive interlining having biodegradability, due to factors such as the low heat resistance of biodegradable synthetic fibers, favorable tear strength and texture may not be obtained due to heat treatment or the like during processing into the adhesive interlining. In addition, in a laminate obtained by adhering an adhesive interlining to an adherend, a favorable texture and adhesion durability may not be obtained due to heat treatment or the like during adhesion.
[0005] An object of one aspect of the present invention is to provide an adhesive interlining having biodegradability that has favorable tear strength and texture, and can provide a laminate with a favorable texture and adhesion durability as a laminate obtained by adhering the adhesive interlining to an adherend.Solution to Problem
[0006] The present invention, in some aspects, relates to the following [1] to [4], and the like. [1] An adhesive interlining, having: a fiber base material including a polylactic acid fiber; a first resin portion provided in a dot pattern on at least one surface of the fiber base material; and a second resin portion provided on the first resin portion, wherein the first resin portion contains a first biodegradable polyester having a melting point M1 of 100 to 180°C, the second resin portion contains a second biodegradable polyester having a melting point M2 of 80 to 180°C, a melting point difference (M1 - M2) of the melting point M1 relative to the melting point M2 is 0 to 70°C, and a melting point difference (M3 - MA) of a melting point M3 of the polylactic acid fiber relative to an average value MA of the melting point M1 and the melting point M2 is 15°C or more. [2] The adhesive interlining according to [1], wherein the melting point difference (M1 - M2) is 10 to 45°C, and the melting point difference (M3 - MA) is 18 to 35°C. [3] The adhesive interlining according to [1] or [2], wherein the fiber base material consists only of the polylactic acid fiber. [4] The adhesive interlining according to any one of [1] to [3], wherein the fiber base material includes polylactic acid filament fiber. Advantageous Effects of Invention
[0007] According to one aspect of the present invention, it is possible to provide an adhesive interlining having biodegradability that has favorable tear strength and texture, and can provide a laminate with a favorable texture and adhesion durability as a laminate obtained by adhering the adhesive interlining to an adherend.Description of Embodiments
[0008] Hereinafter, embodiments of the present invention will be described, but the present invention is not limited to these embodiments in any way.
[0009] In the present specification, a numerical range indicated using "to" indicates a range including the numerical values described before and after "to" as the minimum value and the maximum value, respectively. In the numerical ranges described in stages in the present specification, the upper limit value or the lower limit value of a numerical range in one stage can be arbitrarily combined with the upper limit value or the lower limit value of a numerical range in another stage. In the numerical ranges described in the present specification, the upper limit value or the lower limit value of the numerical range may be replaced with a value shown in the Examples. "A or B" means that either A or B may be included, and both may be included. The materials exemplified in the present specification can be used alone or in combination of two or more, unless otherwise specified. The "unit area" in the adhesive interlining is a unit area as viewed from the thickness direction of the fiber base material of the adhesive interlining. "(Meth)acryl" means at least one of acrylic and the corresponding methacryl.
[0010] The adhesive interlining of the present embodiment has a fiber base material (for example, a base fabric) including a polylactic acid fiber, a first resin portion (lower resin portion) provided in a dot pattern on at least one surface of the fiber base material, and a second resin portion (adhesive resin portion, upper resin portion) provided on the first resin portion. In the adhesive interlining of the present embodiment, the first resin portion contains a first biodegradable polyester having a melting point M1 of 100 to 180°C, the second resin portion contains a second biodegradable polyester having a melting point M2 of 80 to 180°C, a melting point difference (M1 - M2) of the melting point M1 relative to the melting point M2 is 0 to 70°C, and a melting point difference (M3 - MA) of a melting point M3 of the polylactic acid fiber relative to an average value MA of the melting point M1 and the melting point M2 is 15°C or more. A laminate can be obtained by adhering the adhesive interlining of the present embodiment to an adherend. The adherend is not particularly limited. Hereinafter, when referring to both the first resin portion and the second resin portion, they may be simply referred to as a "resin portion". Hereinafter, the features related to the first resin portion are directed to the first resin portion in a dot-shaped resin portion having the first resin portion and the second resin portion provided on the first resin portion.
[0011] The adhesive interlining of the present embodiment has biodegradability because it uses, as biodegradable members, a fiber base material including a polylactic acid fiber and a resin portion containing a biodegradable polyester. For example, according to the adhesive interlining of the present embodiment, a result of having biodegradability can be obtained in the evaluation described in the Examples below.
[0012] According to the findings of the present inventors, since biodegradable members tend to have low heat resistance and easily decompose, when a biodegradable member is used in an adhesive interlining, which tends to involve heating during adhesion to an adherend or the like, a problem may arise in any of the tear strength of the adhesive interlining, the texture of the adhesive interlining, the texture of the laminate, and the adhesion durability of the laminate. On the other hand, the adhesive interlining of the present embodiment can favorably maintain these properties while achieving biodegradability.
[0013] The adhesive interlining of the present embodiment has favorable tear strength, and has favorable tear strength in the fiber direction including the polylactic acid fiber. According to the adhesive interlining of the present embodiment, in the evaluation described in the Examples below, a tear strength of, for example, 0.5 N / 25.4 mm or more (preferably 3.0 N / 25.4 mm or more, 6.0 N / 25.4 mm or more, 8.0 N / 25.4 mm or more, etc.) can be obtained. When there are multiple fiber directions including the polylactic acid fiber, the adhesive interlining of the present embodiment may have favorable tear strength in the fiber direction having the lowest tear strength.
[0014] The adhesive interlining of the present embodiment has a favorable texture before adhering the adhesive interlining to an adherend. According to the adhesive interlining of the present embodiment, a result of "A" can be obtained for the texture of the adhesive interlining in the evaluation described in the Examples below.
[0015] According to the adhesive interlining of the present embodiment, a laminate having a favorable texture can be obtained as a laminate obtained by adhering the adhesive interlining to an adherend. According to the adhesive interlining of the present embodiment, a result of "A" can be obtained for the texture of the laminate in the evaluation described in the Examples below.
[0016] According to the adhesive interlining of the present embodiment, it is possible to obtain a laminate having favorable adhesion durability as a laminate obtained by adhering the adhesive interlining to an adherend, and for example, a laminate having favorable adhesion durability after laundering can be obtained. According to the adhesive interlining of the present embodiment, in the evaluation described in the Examples below, an adhesion strength of, for example, 80 cN / 25.4 mm or more (preferably 100 cN / 25.4 mm or more, 200 cN / 25.4 mm or more, 250 cN / 25.4 mm or more, 300 cN / 25.4 mm or more, 400 cN / 25.4 mm or more, etc.) can be obtained.
[0017] According to one embodiment of the adhesive interlining of the present embodiment, a laminate having favorable adhesion strength of the adhesive interlining to an adherend can be obtained as a laminate before laundering, which is obtained by adhering the adhesive interlining to the adherend. According to one embodiment of the adhesive interlining of the present embodiment, in the evaluation described in the Examples below (before laundering), an adhesion strength of, for example, 100 cN / 25.4 mm or more (preferably 200 cN / 25.4 mm or more, 300 cN / 25.4 mm or more, 400 cN / 25.4 mm or more, 500 cN / 25.4 mm or more, etc.) can be obtained.
[0018] According to one embodiment of the adhesive interlining of the present embodiment, resin strike-through (a phenomenon in which the resin component of the resin portion on one surface seeps out to the other surface side) can be suppressed in a laminate obtained by adhering the adhesive interlining to an adherend. According to one embodiment of the adhesive interlining of the present embodiment, in the evaluation described in the Examples below, the adhesion strength of a member placed on the surface opposite to the surface on which the resin portion is placed can be reduced to, for example, 50 cN / 25.4 mm or less (preferably 30 cN / 25.4 mm or less, 20 cN / 25.4 mm or less, 15 cN / 25.4 mm or less, etc.).
[0019] The fiber base material may be a woven fabric, may be a nonwoven fabric, may be a cross-laid nonwoven fabric, may be a multiaxial nonwoven fabric, and may be a knitted fabric. The fiber base material may be a woven fabric from the viewpoint of easily obtaining excellent processability. The weave structure of the woven fabric is not particularly limited. Examples of the weave structure of the woven fabric include a plain weave structure, a twill weave structure, a satin weave structure, and a rib weave structure. The weave structure of the woven fabric may be a plain weave structure or a twill weave structure from the viewpoint of facilitating the process of providing the resin portion. The weave structure of the woven fabric may be a multiple weave structure such as a double weave structure (biaxial weave structure) or a triple weave structure. The weave structure of the woven fabric may be a derivative weave structure such as a basket weave structure or a rib weave structure. The weave structure of the woven fabric may be a special weave structure such as a mock leno weave structure or a sand weave structure. The weave structure of the woven fabric may be another weave structure.
[0020] The fiber base material includes a polylactic acid fiber (a fiber containing polylactic acid). The fiber base material may be in an embodiment consisting only of polylactic acid fibers, and may be in an embodiment including polylactic acid fibers and other fibers. When the fiber base material consists only of polylactic acid fibers, it is easy to obtain favorable moisture absorption and quick-drying properties (for example, when water is brought into contact with the adhesive interlining, the residual moisture content in the adhesive interlining easily decrease more quickly compared to an adhesive interlining of the same structure consisting only of cotton fibers, which are the most versatile natural fibers: the same applies hereinafter). A woven fabric consisted of warp yarns and weft yarns may be configured such that the warp yarns and weft yarns are consisted of the same fiber yarn, and may be configured such that the warp yarns and weft yarns are consisted of different types of fiber yarns. In a woven fabric consisted of warp yarns and weft yarns, at least one (one or both) of the warp yarns and weft yarns may include polylactic acid fibers, at least a part of the warp yarns may include polylactic acid fibers, and at least a part of the weft yarns may include polylactic acid fibers. Examples of fibers other than polylactic acid fibers include natural fibers such as cotton fibers, rayon fibers, wool fibers, and hemp fibers.
[0021] The content of polylactic acid fibers in the fiber base material may be 30 mass% or more, 40 mass% or more, 50 mass% or more, more than 50 mass%, 60 mass% or more, 70 mass% or more, 80 mass% or more, 90 mass% or more, 95 mass% or more, 98 mass% or more, 99 mass% or more, or substantially 100 mass% (an embodiment in which the fiber base material consists only of polylactic acid fibers), based on the total mass of the fiber base material, from the viewpoint of easily obtaining favorable moisture absorption and quick-drying properties.
[0022] The ratio of the number of polylactic acid fibers in the fiber base material may be 10% or more, 20% or more, 30% or more, 40% or more, 50% or more, more than 50%, 60% or more, 70% or more, 80% or more, 90% or more, 95% or more, 98% or more, 99% or more, or substantially 100% (an embodiment in which the fiber base material consists only of polylactic acid fibers), based on the total number of fibers in the fiber base material, from the viewpoint of easily obtaining favorable moisture absorption and quick-drying properties.
[0023] The melting point M3 of the polylactic acid fiber may be 140°C or more, 145°C or more, 150°C or more, 155°C or more, 160°C or more, 165°C or more, or 170°C or more, from the viewpoint of easily suppressing the deterioration of physical properties of the fiber base material due to heat treatment during processing into an adhesive interlining or during adhesion to an adherend. The melting point M3 may be 200°C or less, 195°C or less, 190°C or less, 185°C or less, 180°C or less, 175°C or less, or 170°C or less, from the viewpoint of easily ensuring favorable biodegradability. From these viewpoints, the melting point M3 may be 140 to 200°C, 140 to 190°C, 140 to 180°C, 150 to 200°C, 150 to 190°C, 150 to 180°C, 160 to 200°C, 160 to 190°C, or 160 to 180°C. The melting point M3 can be measured using a differential scanning calorimeter (DSC) in accordance with JIS K 7123:2012.
[0024] The mass A1 per unit area of the fiber base material may be 10.0 g / m 2< or more, 15.0 g / m 2< or more, 20.0 g / m 2< or more, 25.0 g / m 2< or more, 30.0 g / m 2< or more, 40.0 g / m 2< or more, 50.0 g / m 2< or more, 60.0 g / m 2< or more, 70.0 g / m 2< or more, 75.0 g / m 2< or more, or 80.0 g / m 2< or more, from the viewpoint of easily obtaining favorable tear strength. The mass A1 may be 400.0 g / m 2< or less, 350.0 g / m 2< or less, 300.0 g / m 2< or less, 250.0 g / m 2< or less, 200.0 g / m 2< or less, 190.0 g / m 2< or less, 180.0 g / m 2< or less, 170.0 g / m 2< or less, 160.0 g / m 2< or less, 150.0 g / m 2< or less, 120.0 g / m 2< or less, 100.0 g / m 2< or less, 90.0 g / m 2< or less, 85.0 g / m 2< or less, or 80.0 g / m 2< or less, from the viewpoint of easily obtaining a favorable texture of the adhesive interlining. From these viewpoints, the mass A1 may be 10.0 to 500.0 g / m 2< , 15.0 to 400.0 g / m 2< , 20.0 to 300.0 g / m 2< , 25.0 to 200.0 g / m 2< , 30.0 to 150.0 g / m 2< , or 50.0 to 100.0 g / m 2< . The unit area of the fiber base material in the mass A1 includes the area of the void portions existing between the fibers, in addition to the area occupied by the fibers. The mass A1 tends to be equivalent before and after providing the resin portion on the fiber base material.
[0025] As a method for measuring the mass A1 per unit area of the fiber base material, for example, when the fiber base material consists of natural fibers such as polylactic acid fibers, a method can be mentioned in which the resin portion is removed by immersing the adhesive interlining in a solvent that dissolves the resin portion but does not dissolve the natural fibers, and then the mass of the natural fibers is measured.
[0026] The fineness (for example, average fineness: for example, when the fiber base material is a woven fabric consisted of warp yarns and weft yarns, the average of the fineness of the warp yarns and the fineness of the weft yarns) of the fibers (yarns) constituting the fiber base material may be 10.0 to 1000.0 dtex (dtex = g / 10000 m), 15.0 to 1000.0 dtex, 20.0 to 800.0 dtex, 25.0 to 500.0 dtex, 30.0 to 300 dtex, or 33.0 to 200.0 dtex.
[0027] The fiber base material may include polylactic acid filament fiber (yarn) from the viewpoint of low load in the scouring process to remove fiber impurities, the viewpoint of easily obtaining favorable tear strength, the viewpoint of easily obtaining favorable adhesion strength before laundering, and the viewpoint of easily obtaining a favorable texture of the adhesive interlining. The polylactic acid filament fiber (yarn) is a fiber (yarn) having a length of 5.0 cm or more and consisted of a plurality of polylactic acid filaments. The fiber base material may include polylactic acid staple fiber (yarn). The polylactic acid staple fiber (yarn) is a fiber having a length of less than 5.0 cm and consisted of a plurality of polylactic acid filaments.
[0028] When the fiber base material is a woven fabric consisted of warp yarns and weft yarns, the warp density and the weft density may be, independently of each other, 25 to 200 yarns / 25.4 mm, 27 to 150 yarns / 25.4 mm, 30 to 120 yarns / 25.4 mm, or 35 to 110 yarns / 25.4 mm. The ratio of the weft density with respect to the warp density (weft density / warp density) may be 0.50 to 2.00, 0.60 to 1.67, or 0.65 to 1.54.
[0029] The first resin portion is provided in a dot pattern on at least one surface of the fiber base material, and may be provided in a dot pattern at one or more surfaces of the fiber base material. The first resin portion may be provided only on one surface of the fiber base material, and may be provided on both surfaces of the fiber base material. The adhesive interlining of the present embodiment may have first resin portions that are not connected to each other.
[0030] "Dot-shaped" usually means that a plurality of circular (substantially circular (including true circles) or substantially elliptical) dots are regularly arranged, but the shape or arrangement of each dot is not particularly limited. For example, the shape of each dot may be a quadrangular shape (square shape, rectangular shape, rhombic shape, etc.), a hexagonal shape, a star shape, an irregular shape, or the like. In addition, each dot may be irregularly arranged. In addition, each dot may be in a state of not being connected to each other. The dot-shaped first resin portion may be uniformly distributed. "The first resin portion is uniformly distributed" may be, for example, a state in which, when the fiber base material is divided into 1-inch square regions (unit area: 1 inch × 1 inch; 1 inch = 25.4 mm; the same applies hereinafter) and the number of first resin portions per unit area of each region is determined, the coefficient of variation (standard deviation / average value) of the number of first resin portions per unit area is 20% or less.
[0031] The second resin portion is provided on the first resin portion, and may be provided at the surface of the first resin portion. The second resin portion may be provided only on the first resin portion provided on one surface side of the fiber base material, and may be provided on the first resin portions provided on both surface sides of the fiber base material. The second resin portion can be formed by scattering particles containing the constituent components of the second resin portion onto the first resin portion and then heating to fix the particles to the first resin portion.
[0032] The number of dot-shaped resin portions per square inch (dot-shaped resin portions having a first resin portion and a second resin portion provided on the first resin portion: an overlapping portion of the first resin portion and the second resin portion: for example, one dot-shaped constituent unit constituting a dot-shaped resin portion is consisted of one first resin constituting a dot-shaped first resin portion, and a plurality of second resin particles constituting a second resin portion fixed on the first resin) may be in the following range. The number of dot-shaped resin portions may be 9 / (25.4 mm × 25.4 mm) or more, 16 / (25.4 mm × 25.4 mm) or more, 49 / (25.4 mm × 25.4 mm) or more, 100 / (25.4 mm × 25.4 mm) or more, 400 / (25.4 mm × 25.4 mm) or more, or 900 / (25.4 mm × 25.4 mm) or more, from the viewpoint of easily obtaining favorable adhesion strength before laundering and the viewpoint easily obtaining a favorable texture of the adhesive interlining. The number of dot-shaped resin portions may be 6400 / (25.4 mm × 25.4 mm) or less, 4900 / (25.4 mm × 25.4 mm) or less, 3600 / (25.4 mm × 25.4 mm) or less, 2500 / (25.4 mm × 25.4 mm) or less, or 1600 / (25.4 mm × 25.4 mm) or less, from the viewpoint of easily suppressing excessive hardening of the texture of the adhesive interlining. From these viewpoints, the number of dot-shaped resin portions may be 9 to 6400 / (25.4 mm × 25.4 mm), 16 to 4900 / (25.4 mm × 25.4 mm), 49 to 3600 / (25.4 mm × 25.4 mm), 100 to 2500 / (25.4 mm × 25.4 mm), or 900 to 1600 / (25.4 mm × 25.4 mm).
[0033] The number of dot-shaped resin portions per square inch can be obtained by observing the dot-shaped resin portions in the adhesive interlining using a 1-inch linen tester and counting the number of dot-shaped resin portions. The number of dot-shaped resin portions is measured in ten 1-inch square regions while changing the measurement locations so that the measurement locations are substantially evenly distributed in the adhesive interlining, and the average value of the measurement values at eight locations, excluding the maximum and minimum measurement values, can be obtained as the number of dot-shaped resin portions per square inch. When dot-shaped resin portions are provided on both surfaces of the fiber base material, the number of dot-shaped resin portions is the average value of one surface and the other surface. If the number of dot-shaped resin portions is large and it is difficult to count the total amount, it can be obtained by measuring the number of dot-shaped resin portions in one row each in the vertical and horizontal directions and multiplying by the number of vertical and horizontal rows. In addition, when it is difficult to observe the dot-shaped resin portions with a 1-inch linen tester, a measuring microscope can be used to measure the number of dot-shaped resin portions per a certain size and convert it to inches.
[0034] The first resin portion contains a first biodegradable polyester having a melting point M1 of 100 to 180°C. The second resin portion contains a second biodegradable polyester having a melting point M2 of 80 to 180°C. The melting point M2 can be obtained by physically separating the second resin portion from the adhesive interlining, and then measuring the melting point of the separated second resin portion using a differential scanning calorimeter (DSC) in accordance with JIS K 7123:2012. The melting point M1 can be obtained by the following procedure. First, a resin solution is obtained by dissolving the first resin portion and the second resin portion of the adhesive interlining in a solvent capable of dissolving the first resin portion and the second resin portion. Next, after obtaining a resin solid by volatilizing the solvent of this resin solution, the melting point of this resin solid is measured using a differential scanning calorimeter (DSC) in accordance with JIS K 7123:2012. When there are two endothermic peaks in the DSC, the melting point of the resin solid and the melting point M2 are compared, and the melting point different from the melting point M2 can be calculated as the melting point M1. When there is one endothermic peak in the DSC, the melting point M1 can be regarded as being the same as the melting point M2.
[0035] The melting point M1 may be 100°C or more, 105°C or more, 110°C or more, 115°C or more, 120°C or more, 125°C or more, 130°C or more, 135°C or more, 140°C or more, 145°C or more, 150°C or more, 155°C or more, or 160°C or more, from the viewpoint of easily obtaining favorable adhesion durability, the viewpoint of easily obtaining favorable adhesion strength before laundering, and the viewpoint of easily suppressing resin strike-through. The melting point M1 may be 180°C or less, 175°C or less, 170°C or less, 165°C or less, 160°C or less, 155°C or less, 150°C or less, 145°C or less, 140°C or less, 135°C or less, or 130°C or less, from the viewpoint of easily obtaining favorable resin adhesion of the second resin portion. From these viewpoints, the melting point M1 may be 100 to 160°C, 100 to 150°C, 100 to 140°C, 120 to 180°C, 120 to 160°C, 120 to 150°C, 120 to 140°C, 140 to 180°C, 140 to 160°C, 140 to 150°C, 150 to 180°C, 150 to 160°C, or 160 to 180°C.
[0036] The melting point M2 may be 80°C or more, 84°C or more, 85°C or more, 90°C or more, 95°C or more, 100°C or more, 105°C or more, 110°C or more, 115°C or more, 120°C or more, 125°C or more, or 130°C or more, from the viewpoint of easily obtaining favorable adhesion durability and the viewpoint of easily obtaining favorable adhesion strength before laundering. The melting point M2 may be 180°C or less, 175°C or less, 170°C or less, 165°C or less, 160°C or less, 155°C or less, 150°C or less, 145°C or less, 140°C or less, 135°C or less, 130°C or less, 125°C or less, 120°C or less, 115°C or less, 110°C or less, 105°C or less, 100°C or less, 95°C or less, 90°C or less, 85°C or less, or 84°C or less, from the viewpoint of easily obtaining a favorable texture of the adhesive interlining and the viewpoint of easily obtaining favorable adhesion strength before laundering. From these viewpoints, the melting point M2 may be 80 to 140°C, 80 to 130°C, 80 to 120°C, 80 to 100°C, 100 to 180°C, 100 to 140°C, 100 to 130°C, 120 to 180°C, 120 to 140°C, 120 to 130°C, 130 to 180°C, or 130 to 140°C.
[0037] The melting point M1 is the same as or higher than the melting point M2. The melting point difference (M1 - M2) of the melting point M1 relative to the melting point M2 is 0°C or more from the viewpoint of easily obtaining favorable adhesion strength before laundering and the viewpoint of obtaining a laminate with a favorable texture. The melting point difference (M1 - M2) may be 5°C or more, 10°C or more, 15°C or more, 20°C or more, 25°C or more, 30°C or more, 35°C or more, 40°C or more, 45°C or more, 50°C or more, 55°C or more, 60°C or more, 65°C or more, or 66°C or more, from the viewpoint of easily obtaining favorable adhesion strength before laundering, the viewpoint of easily obtaining favorable adhesion durability, and the viewpoint of easily suppressing resin strike-through. The melting point difference (M1 - M2) is 70°C or less from the viewpoint of obtaining favorable adhesion durability. The melting point difference (M1 - M2) may be 66°C or less, 65°C or less, 60°C or less, 55°C or less, 50°C or less, 45°C or less, 40°C or less, 35°C or less, 30°C or less, 25°C or less, 20°C or less, 15°C or less, 10°C or less, or 5°C or less, from the viewpoint of easily obtaining a laminate with a favorable texture and the viewpoint of easily obtaining favorable adhesion durability. The melting point difference (M1 - M2) may be 0 to 45°C, 0 to 30°C, 0 to 25°C, 0 to 20°C, 0 to 10°C, 10 to 70°C, 10 to 45°C, 10 to 30°C, 10 to 25°C, 10 to 20°C, 20 to 70°C, 20 to 45°C, 20 to 30°C, 20 to 25°C, 25 to 70°C, 25 to 45°C, 25 to 30°C, 30 to 70°C, 30 to 45°C, or 45 to 70°C.
[0038] The average value MA (MA = (M1 + M2) / 2) of the melting point M1 and the melting point M2 may be 90°C or more, 95°C or more, 100°C or more, 105°C or more, 110°C or more, 115°C or more, 117°C or more, 120°C or more, 125°C or more, 130°C or more, 135°C or more, 140°C or more, or 145°C or more, from the viewpoint of easily obtaining favorable adhesion durability. The average value MA may be 180°C or less, 175°C or less, 170°C or less, 165°C or less, 160°C or less, 155°C or less, 150°C or less, 145°C or less, 140°C or less, 135°C or less, 130°C or less, 125°C or less, 120°C or less, or 117°C or less, from the viewpoint of easily obtaining favorable adhesion strength before laundering and the viewpoint of easily obtaining a laminate with a favorable texture. From these viewpoints, the average value MA may be 90 to 180°C, 90 to 150°C, 90 to 145°C, 90 to 140°C, 90 to 130°C, 90 to 120°C, 120 to 180°C, 120 to 150°C, 120 to 145°C, 120 to 140°C, 120 to 130°C, 130 to 180°C, 130 to 150°C, 130 to 145°C, 130 to 140°C, 140 to 180°C, 140 to 150°C, 140 to 145°C, 145 to 180°C, or 145 to 150°C.
[0039] The melting point difference (M3 - MA) of the melting point M3 of the polylactic acid fiber relative to the average value MA is 15°C or more from the viewpoint of obtaining a favorable texture of the adhesive interlining. The melting point difference (M3 - MA) may be 20°C or more, 25°C or more, 30°C or more, 35°C or more, 40°C or more, 45°C or more, 50°C or more, or 53°C or more, from the viewpoint of easily obtaining favorable adhesion strength before laundering and the viewpoint of easily obtaining a laminate with a favorable texture. The melting point difference (M3 - MA) may be 70°C or less, 65°C or less, 60°C or less, 55°C or less, 53°C or less, 50°C or less, 45°C or less, 40°C or less, 35°C or less, 30°C or less, or 25°C or less, from the viewpoint of easily obtaining favorable adhesion durability. From these viewpoints, the melting point difference (M3 - MA) may be 15 to 70°C, 15 to 55°C, 15 to 45°C, 15 to 35°C, 15 to 30°C, 15 to 25°C, 18 to 70°C, 18 to 55°C, 18 to 45°C, 18 to 35°C, 18 to 30°C, 30 to 70°C, 30 to 55°C, 30 to 45°C, 30 to 35°C, 35 to 70°C, 35 to 55°C, 35 to 45°C, 45 to 70°C, or 45 to 55°C.
[0040] The glass transition temperature (Tg) of the first biodegradable polyester may be 90°C or less, 85°C or less, 80°C or less, 75°C or less, 70°C or less, 65°C or less, 60°C or less, 55°C or less, 50°C or less, or 49°C or less, from the viewpoint of easily obtaining favorable biodegradability. The glass transition temperature of the first biodegradable polyester may be 10°C or more, 15°C or more, 20°C or more, 25°C or more, 30°C or more, 35°C or more, 40°C or more, 45°C or more, 49°C or more, 50°C or more, 55°C or more, 60°C or more, or 65°C or more, from the viewpoint of suppressing the excessive biodegradability. From these viewpoints, the glass transition temperature of the first biodegradable polyester may be 10 to 90°C, 10 to 70°C, 10 to 65°C, 10 to 50°C, 40 to 90°C, 40 to 70°C, 40 to 65°C, 40 to 50°C, 60 to 90°C, 60 to 70°C, or 60 to 65°C.
[0041] The glass transition temperature (Tg) of the second biodegradable polyester may be 90°C or less, 85°C or less, 80°C or less, 75°C or less, 70°C or less, 65°C or less, 60°C or less, 55°C or less, 50°C or less, 45°C or less, or 40°C or less, from the viewpoint of easily obtaining favorable biodegradability. The glass transition temperature of the second biodegradable polyester may be 10°C or more, 15°C or more, 20°C or more, 25°C or more, 30°C or more, 35°C or more, 40°C or more, 45°C or more, 50°C or more, 55°C or more, 60°C or more, or 65°C or more, from the viewpoint of suppressing the excessive biodegradability. From these viewpoints, the glass transition temperature of the second biodegradable polyester may be 10 to 90°C, 10 to 70°C, 10 to 65°C, 10 to 45°C, 35 to 90°C, 35 to 70°C, 35 to 65°C, 35 to 45°C, 60 to 90°C, 60 to 70°C, or 60 to 65°C.
[0042] The glass transition temperatures of the first biodegradable polyester and the second biodegradable polyester can be measured using a differential scanning calorimeter (DSC) in the same manner as the measurement of the melting point described above, except that it is in accordance with JIS K 7121:2012 instead of JIS K 7123:2012.
[0043] The first resin portion may contain a biodegradable polyester that does not correspond to the first biodegradable polyester having a melting point M1 of 100 to 180°C, and may contain a resin component (resin material) other than a biodegradable polyester. The second resin portion may contain a biodegradable polyester that does not correspond to the second biodegradable polyester having a melting point M2 of 80 to 180°C, and may contain a resin component (resin material) other than a biodegradable polyester. Examples of the resin component other than the biodegradable polyester include (meth)acrylic resins, polyurethanes, polyamides, polyolefins, vinyl acetate resins, epoxy resins, and polyvinyl alcohol.
[0044] The content of the first biodegradable polyester may be 80 mass% or more, 90 mass% or more, 95 mass% or more, 98 mass% or more, 99 mass% or more, or substantially 100 mass% (an embodiment in which the first resin portion consists only of the first biodegradable polyester), based on the total mass of the first resin portion, from the viewpoint of easily obtaining favorable biodegradability.
[0045] The content of the second biodegradable polyester may be 80 mass% or more, 90 mass% or more, 95 mass% or more, 98 mass% or more, 99 mass% or more, or substantially 100 mass% (an embodiment in which the second resin portion consists only of the second biodegradable polyester), based on the total mass of the second resin portion, from the viewpoint of easily obtaining favorable biodegradability.
[0046] The second resin portion may contain particles containing the second biodegradable polyester. In the particle size distribution of the particles containing the second biodegradable polyester, the particle size range that includes 95% of the particles based on the entirety of the particles may be 1 to 300 µm, 40 to 200 µm, or 80 to 120 µm, from the viewpoint of easily obtaining favorable adhesion strength before laundering, the viewpoint of easily suppressing problems that occur during adhesion of the adhesive interlining (such as resin strike-through and staining for various types of outer fabrics), and the viewpoint of easily obtaining favorable adhesion durability.
[0047] The first resin portion and the second resin portion may contain components other than the resin component. Examples of such components include inorganic particles, thickeners, surfactants, lubricants, and pigments.
[0048] Examples of the inorganic particles include metal particles, metal oxide particles (excluding composite metal oxide particles), composite metal oxide particles, and activated carbon particles. Examples of the metal particles include silver particles and copper particles. Examples of the metal oxide particles include titanium oxide particles, silicon oxide particles (for example, silicon dioxide particles), and zinc oxide particles. Examples of the composite metal oxide particles include SiO 2 -ZnO composite particles.
[0049] Examples of the thickener include inorganic compounds such as water-soluble alkali silicates, montmorillonite, and colloidal alumina; cellulose derivative compounds such as methyl cellulose, hydroxyethyl cellulose, and carboxymethyl cellulose; polyether-based compounds such as Pluronic polyethers, polyether dialkyl esters, polyether dialkyl ethers, polyether urethane modified products, and polyether epoxy modified products; polyacrylic acid-based compounds such as sodium polyacrylate and polyacrylic acid (meth)acrylic acid ester copolymers; polyvinyl-based compounds such as polyvinylpyrrolidone, polyvinyl alcohol, and polyvinyl benzyl alcohol copolymers; protein derivatives such as sodium caseinate and ammonium caseinate; and maleic anhydride copolymers such as partial esters of vinyl methyl ether-maleic anhydride copolymers and half esters of the reaction product of a drying oil fatty acid allyl alcohol ester and maleic anhydride.
[0050] Examples of the surfactant include carboxylates, sulfonates, sulfate ester salts, quaternary ammonium salts, amine salts, betaine types, polyhydric alcohol types, polyoxyethylene alkyl ethers, polyoxyethylene alkylphenyl ethers, polyoxyethylene polyoxypropylene glycols, and polyethylene glycols.
[0051] Examples of the lubricant include paraffin wax, synthetic polyethylene, liquid paraffin, stearic acid, behenic acid, hydroxystearic acid, stearyl alcohol, stearic acid amide, oleic acid amide, erucic acid amide, methylene bis-stearic acid amide, ethylene bis-stearic acid amide, glycerin monostearate, glycerin monooleate, butyl stearate, metal soaps, and fumed silica.
[0052] Examples of the pigment include Alkali Blue, Lithol Red, Carmine 6B, disazo yellow, phthalocyanine blue, quinacridone red, isoindoline yellow, red ocher, yellow ocher, green earth, malachite, gofun, graphite, Prussian blue, zinc white, cobalt blue, emerald green, viridian, titanium white, fluorescent pigments, metallic powder pigments, pearl pigments, and thermochromic pigments.
[0053] The mass A2 per unit area of the first resin portion may be 0.1 g / m 2< or more, 0.5 g / m 2< or more, 1.0 g / m 2< or more, 1.5 g / m 2< or more, 2.0 g / m 2< or more, 2.5 g / m 2< or more, or 3.0 g / m 2< or more, from the viewpoint of easily obtaining favorable adhesion strength before laundering and the viewpoint of easily obtaining favorable adhesion durability. The mass A2 may be 30.0 g / m 2< or less, 25.0 g / m 2< or less, 20.0 g / m 2< or less, 15.0 g / m 2< or less, 10.0 g / m 2< or less, 9.0 g / m 2< or less, 8.0 g / m 2< or less, 7.0 g / m 2< or less, 6.0 g / m 2< or less, 5.5 g / m 2< or less, 5.0 g / m 2< or less, 4.5 g / m 2< or less, 4.0 g / m 2< or less, 3.5 g / m 2< or less, or 3.0 g / m 2< or less, from the viewpoint of easily suppressing resin strike-through. From these viewpoints, the mass A2 may be 0.1 to 30.0 g / m 2< , 0.5 to 20.0 g / m 2< , 1.0 to 15.0 g / m 2< , 1.5 to 10.0 g / m 2< , 2.0 to 8.0 g / m 2< , or 2.5 to 5.0 g / m 2< . When the first resin portion is provided on both surfaces of the fiber base material, the mass A2 is the total mass of the first resin portions on both surfaces. When the first resin portion is a resin composition containing components other than the resin component (inorganic particles, etc.), the mass A2 may be the mass per unit area of the resin composition containing the components other than the resin component.
[0054] The mass A3 per unit area of the second resin portion may be 1.0 g / m 2< or more, 1.5 g / m 2< or more, 2.0 g / m 2< or more, 2.5 g / m 2< or more, 3.0 g / m 2< or more, 3.5 g / m 2< or more, 4.0 g / m 2< or more, 4.5 g / m 2< or more, 5.0 g / m 2< or more, 5.5 g / m 2< or more, 6.0 g / m 2< or more, 6.5 g / m 2< or more, 7.0 g / m 2< or more, 7.5 g / m 2< or more, 8.0 g / m 2< or more, 8.5 g / m 2< or more, 9.0 g / m 2< or more, 9.5 g / m 2< or more, or 10.0 g / m 2< or more, from the viewpoint of easily obtaining favorable adhesion strength before laundering and the viewpoint of easily obtaining favorable adhesion durability. The mass A3 may be 50.0 g / m 2< or less, 45.0 g / m 2< or less, 40.0 g / m 2< or less, 35.0 g / m 2< or less, 30.0 g / m 2< or less, 25.0 g / m 2< or less, 20.0 g / m 2< or less, 15.0 g / m 2< or less, 12.0 g / m 2< or less, or 10.0 g / m 2< or less, from the viewpoint of easily suppressing resin strike-through. From these viewpoints, the mass A3 may be 1.0 to 50.0 g / m 2< , 2.0 to 50.0 g / m 2< , 3.0 to 30.0 g / m 2< , 4.0 to 20.0 g / m 2< , or 5.0 to 15.0 g / m 2< . When the second resin portion is provided on both surfaces of the fiber base material, the mass A3 is the total mass of the second resin portions on both surfaces. When the second resin portion is a resin composition containing components other than the resin component (inorganic particles, etc.), the mass A3 may be the mass per unit area of the resin composition containing the components other than the resin component.
[0055] The mass A4 per unit area of the dot-shaped resin portion (that is, the sum of the mass A2 per unit area of the first resin portion and the mass A3 per unit area of the second resin portion) may be 1.1 g / m 2< or more, 3.0 g / m 2< or more, 5.0 g / m 2< or more, 6.0 g / m 2< or more, 7.0 g / m 2< or more, 8.0 g / m 2< or more, 10.0 g / m 2< or more, or 12.0 g / m 2< or more, from the viewpoint of easily obtaining favorable adhesion strength before laundering and the viewpoint of easily obtaining favorable adhesion durability. The mass A2 may be 80.0 g / m 2< or less, 50.0 g / m 2< or less, 40.0 g / m 2< or less, 30.0 g / m 2< or less, 25.0 g / m 2< or less, 20.0 g / m 2< or less, 18.0 g / m 2< or less, or 15.0 g / m 2< or less, from the viewpoint of easily suppressing resin strike-through. From these viewpoints, the mass A2 may be 1.1 to 80.0 g / m 2< , 3.0 to 50.0 g / m 2< , 5.0 to 40.0 g / m 2< , 7.0 to 30.0 g / m 2< , 8.0 to 25.0 g / m 2< , or 10.0 to 20.0 g / m 2< . When the dot-shaped resin portion is provided on both surfaces of the fiber base material, the mass A4 is the total mass of the dot-shaped resin portions on both surfaces. When the dot-shaped resin portion is a resin composition containing components other than the resin component (inorganic particles, etc.), the mass A4 may be the mass per unit area of the resin composition containing the components other than the resin component.
[0056] The ratio R1 (= A3 / A2) of the mass A3 per unit area of the second resin portion with respect to the mass A2 per unit area of the first resin portion may be in the following range. The ratio R1 may be 0.1 or more, 0.5 or more, 1.0 or more, more than 1.0, 1.1 or more, 1.5 or more, 2.0 or more, 2.5 or more, 3.0 or more, or 3.3 or more, from the viewpoint of easily obtaining favorable adhesion strength before laundering and the viewpoint of easily obtaining favorable adhesion durability. The ratio R1 may be 10.0 or less, 8.0 or less, 7.0 or less, 6.0 or less, 5.5 or less, 5.0 or less, 4.5 or less, 4.0 or less, 3.5 or less, or 3.3 or less, from the viewpoint of easily improving the resin adhesion of the second resin portion. From these viewpoints, the ratio R1 may be 0.1 to 10.0, 0.1 to 7.0, 0.1 to 4.0, 1.1 to 10.0, 1.1 to 7.0, 1.1 to 4.0, 3.0 to 10.0, 3.0 to 7.0, or 3.0 to 4.0.
[0057] The mass A2 per unit area of the first resin portion, the mass A3 per unit area of the second resin portion, and the mass A4 per unit area of the dot-shaped resin portion can be measured by the following procedure. First, five 10 cm × 10 cm samples are cut out from five locations that are separated from each other and substantially evenly distributed in the adhesive interlining. Next, the mass a1 is measured for each sample. Next, each sample is immersed in a solvent in which the first resin portion and the second resin portion are soluble, and the mass a2 after dissolving the first resin portion and the second resin portion is measured. From the difference between the mass a1 and the mass a2, and the area of each sample, the mass per unit area of each sample is calculated, and the average value of the mass per unit area of three samples, excluding one sample with the maximum value and one sample with the minimum value, is taken as the mass A4 per unit area of the dot-shaped resin portion. Next, using the solution in which the first resin portion and the second resin material are dissolved, the respective resins are identified by 1H-NMR, 13C-NMR, or the like. Next, a standard solution is prepared by appropriately mixing the respective resins, and the absorbance is measured to create a calibration curve. Next, based on this calibration curve, the mass ratio of the first resin and the second resin is determined from the absorbance of the above-mentioned solution. The mass A2 and the mass A3 are calculated from the mass A4 and this mass ratio. If the size of the adhesive interlining is small and five 10 cm × 10 cm samples cannot be cut out, the size of the samples can be adjusted so that five samples can be cut out.
[0058] The ratio R2 (= [A2 / A1] × 100) of the mass A2 per unit area of the first resin portion with respect to the mass A1 per unit area of the fiber base material may be in the following range. The ratio R2 may be 0.30% or more, 0.50% or more, 0.80% or more, 1.00% or more, 1.30% or more, 1.50% or more, 1.60% or more, 1.70% or more, 1.80% or more, 2.00% or more, 3.00% or more, or 3.50% or more, from the viewpoint of easily obtaining favorable adhesion strength before laundering and the viewpoint of easily obtaining favorable adhesion durability. The ratio R2 may be 30.00% or less, 25.00% or less, 20.00% or less, 18.00% or less, 15.00% or less, 12.00% or less, 10.00% or less, 9.00% or less, 8.00% or less, 6.00% or less, 5.00% or less, or 4.00% or less, from the viewpoint of easily maintaining a favorable texture of the adhesive interlining. From these viewpoints, the ratio R2 may be 0.30 to 30.00%, 0.50 to 20.00%, 1.00 to 15.00%, 2.00 to 10.00%, 3.00 to 9.00%, or 3.00 to 5.00%.
[0059] The ratio R3 (= [A3 / A1] × 100) of the mass A3 per unit area of the second resin portion with respect to the mass A1 per unit area of the fiber base material may be in the following range. The ratio R3 may be 1.00% or more, 2.00% or more, 3.00% or more, 4.00% or more, 5.00% or more, 6.00% or more, 7.00% or more, or 7.50% or more, from the viewpoint of easily obtaining favorable adhesion strength before laundering and the viewpoint of easily obtaining favorable adhesion durability. The ratio R3 may be 50.00% or less, 45.00% or less, 40.00% or less, 35.00% or less, 30.50% or less, 30.00% or less, or 27.50% or less, from the viewpoint of easily suppressing resin strike-through. From these viewpoints, the ratio R3 may be 1.00 to 50.00%, 2.00 to 40.00%, 5.00 to 35.00%, 6.00 to 30.50%, or 7.50 to 27.50%.
[0060] The ratio R4 (= [A4 / A1] × 100) of the mass A4 per unit area of the dot-shaped resin portion with respect to the mass A1 per unit area of the fiber base material may be in the following range. The ratio R4 may be 1.30% or more, 3.00% or more, 5.00% or more, 7.00% or more, 8.00% or more, 9.00% or more, 10.00% or more, 11.00% or more, 12.00% or more, 14.00% or more, 15.00% or more, or 16.00% or more, from the viewpoint of easily obtaining favorable adhesion strength before laundering and the viewpoint of easily obtaining favorable adhesion durability. The ratio R4 may be 55.00% or less, 50.00% or less, 45.00% or less, 40.00% or less, 35.00% or less, 33.00% or less, 30.00% or less, 25.00% or less, or 20.00% or less, from the viewpoint of easily maintaining a favorable texture of the adhesive interlining. From these viewpoints, the ratio R4 may be 1.30 to 55.00%, 5.00 to 45.00%, 8.00 to 40.00%, 10.00 to 35.00%, 11.00 to 33.00%, or 12.00 to 25.00%.
[0061] The sum of the mass per unit area of the fiber base material, the first resin portion, and the second resin portion (the sum of mass A1, mass A2, and mass A3) may be in the following range. The sum of the mass may be 11.1 g / m 2< or more, 15.0 g / m 2< or more, 20.0 g / m 2< or more, 25.0 g / m 2< or more, 30.0 g / m 2< or more, 35.0 g / m 2< or more, 40.0 g / m 2< or more, 50.0 g / m 2< or more, 60.0 g / m 2< or more, 70.0 g / m 2< or more, 80.0 g / m 2< or more, or 90.0 g / m 2< or more, from the viewpoint of easily obtaining a suitable texture of the adhesive interlining and the viewpoint of easily providing lightweight clothes. The sum of the mass may be 480.0 g / m 2< or less, 380.0 g / m 2< or less, 280.0 g / m 2< or less, 230.0 g / m 2< or less, 200.0 g / m 2< or less, 180.0 g / m 2< or less, 150.0 g / m 2< or less, 120.0 g / m 2< or less, or 100.0 g / m 2< or less, from the viewpoint of easily obtaining a suitable texture of the adhesive interlining. From these viewpoints, the sum of the mass may be 11.1 to 480.0 g / m 2< , 20.0 to 380.0 g / m 2< , 30.0 to 280.0 g / m 2< , 35.0 to 230.0 g / m 2< , 40.0 to 180.0 g / m 2< , or 50.0 to 150.0 g / m 2< .
[0062] The average diameter D of the dot-shaped resin portion may be 50 µm or more, 80 µm or more, 100 µm or more, 120 µm or more, 150 µm or more, 180 µm or more, or 200 µm or more, from the viewpoint of easily obtaining favorable adhesion strength before laundering and the viewpoint of easily obtaining favorable adhesion durability. The average diameter D of the dot-shaped resin portion may be 1500 µm or less, 1250 µm or less, 1000 µm or less, 800 µm or less, 700 µm or less, or 500 µm or less, from the viewpoint that the dot-shaped resin portion is difficult to be visually recognized after adhesion to the adherend. From these viewpoints, the average diameter D of the dot-shaped resin portion may be 50 to 1500 µm, 80 to 1000 µm, 100 to 800 µm, 150 to 700 µm, or 200 to 500 µm.
[0063] The average diameter D of the dot-shaped resin portion can be obtained by observing the dot-shaped resin portion in the adhesive interlining using a microscope and measuring the diameter of the dot-shaped resin portion. The diameters of 20 dot-shaped resin portions are measured while changing the measurement locations so that the measurement locations are substantially evenly distributed in the adhesive interlining, and the average value of the measurement values of 10 diameters, excluding the five measurement values counted from the maximum and the five measurement values counted from the minimum, can be obtained as the average diameter D of the dot-shaped resin portion. When the shape of the dot-shaped resin portion is not a true circle, the area of the dot-shaped resin portion can be measured using area calculation software built into the microscope or the like, and the diameter of a true circle having that area can be obtained as the diameter of the dot-shaped resin portion. When the dot-shaped resin portion is provided on both surfaces of the fiber base material, the average diameter D of the dot-shaped resin portion is the average value of the average diameters of one surface and the other surface.
[0064] The average center-to-center distance d of the dot-shaped resin portion may be 0.1 mm or more, 0.15 mm or more, 0.2 mm or more, 0.25 mm or more, 0.3 mm or more, 0.35 mm or more, or 0.4 mm or more, from the viewpoint of easily maintaining a favorable texture of the adhesive interlining. The average center-to-center distance d may be 5.0 mm or less, 4.0 mm or less, 3.0 mm or less, 2.0 mm or less, 1.5 mm or less, or 1.0 mm or less, from the viewpoint of easily obtaining favorable adhesion strength before laundering and the viewpoint of easily obtaining favorable adhesion durability. From these viewpoints, the average center-to-center distance d may be 0.1 to 5.0 mm, 0.2 to 4.0 mm, 0.3 to 2.0 mm, 0.35 to 1.5 mm, or 0.4 to 1.0 mm.
[0065] The average center-to-center distance d of the dot-shaped resin portion can be obtained by observing the dot-shaped resin portion in the adhesive interlining using a microscope and measuring the distance between the centers of the dot-shaped resin portions. Specifically, a region (observation target region 1) including a plurality of (for example, 10) dot-shaped resin portions is observed, and one of the dot-shaped resin portions is selected from that region. The distances between the center of this dot-shaped resin portion and the centers of a plurality of dot-shaped resin portions adjacent to the dot-shaped resin portion are respectively measured. The average value of the three shortest distances among the measurement results of the distances is obtained as the center-to-center distance. The center-to-center distance is determined for all the dot-shaped resin portions included in the observation target region 1, and the average value of the remaining center-to-center distances, excluding the top 10% of the center-to-center distances counted from the maximum and the bottom 10% of the center-to-center distances counted from the minimum, is obtained as the average center-to-center distance d1. Next, two regions (observation target region 2 and observation target region 3; there is no overlap in the included dot-shaped resin portions between observation target region 2 and observation target region 3) that do not overlap with the observation target region 1 in terms of the included dot-shaped resin portions and that include a plurality of (for example, 10) dot-shaped resin portions are selected so that the observation target regions 1 to 3 are substantially evenly distributed in the adhesive interlining. For the observation target region 2 and the observation target region 3, similarly to the observation target region 1, the average values of the center-to-center distances are obtained as the average center-to-center distance d2 and the average center-to-center distance d3. Next, the average center-to-center distance d is obtained as the average value of the average center-to-center distances d1 to d3. Here, as the center of the dot-shaped resin portion, the geometric center (center of gravity) of the dot-shaped resin portion when viewed from the thickness direction of the fiber base material of the adhesive interlining may be used. When the dot-shaped resin portion is provided on both surfaces of the fiber base material, the average center-to-center distance d of the dot-shaped resin portion is the average value of the average center-to-center distances of one surface and the other surface.
[0066] The ratio R (= d / D) of the average center-to-center distance d of the dot-shaped resin portion with respect to the average diameter D of the dot-shaped resin portion may be in the following range. The ratio R may be 0.9 or more, 1.0 or more, 1.1 or more, 1.2 or more, 1.3 or more, 1.4 or more, or 1.5 or more, from the viewpoint of easily maintaining a favorable texture of the adhesive interlining. The ratio R may be 8.0 or less, 7.0 or less, 6.0 or less, 5.0 or less, 4.0 or less, 3.5 or less, 3.0 or less, 2.5 or less, or 2.0 or less, from the viewpoint of easily obtaining favorable adhesion strength before laundering and the viewpoint of easily obtaining favorable adhesion durability. From these viewpoints, the ratio R may be 0.9 to 8.0, 1.0 to 7.0, 1.0 to 6.0, 1.0 to 5.0, 1.1 to 5.0, 1.1 to 4.0, 1.2 to 3.5, 1.3 to 3.0, 1.4 to 2.5, or 1.5 to 2.0.
[0067] The average height of the dot-shaped resin portion may be 50 µm or more, 80 µm or more, 100 µm or more, 120 µm or more, 150 µm or more, 180 µm or more, or 200 µm or more, from the viewpoint of easily obtaining favorable adhesion strength before laundering and the viewpoint of easily obtaining favorable adhesion durability. The average height of the dot-shaped resin portion may be 500 µm or less, 450 µm or less, 400 µm or less, 350 µm or less, 300 µm or less, 250 µm or less, or 200 µm or less, from the viewpoint of easily suppressing resin strike-through during adhesion and the viewpoint of easily suppressing the phenomenon in which the resin bleeds through to the outer fabric side (the fiber base material side of the adhesive interlining) during adhesion. From these viewpoints, the average height of the dot-shaped resin portion may be 50 to 500 µm, 50 to 300 µm, 50 to 250 µm, 100 to 500 µm, 100 to 300 µm, 100 to 250 µm, 150 to 500 µm, 150 to 300 µm, or 150 to 250 µm.
[0068] The average height of the dot-shaped resin portion can be calculated by the following method. First, the adhesive interlining is cut using cutting scissors to obtain a measurement sample with a width of 20 mm and a length of 50 mm, in which 20 or more dot-shaped resin portions are present. Next, the measurement sample is placed on the stage of a microscope, and the cut surface is observed at a magnification of 100 times using the microscope. Next, for 10 substantially evenly distributed dot-shaped resin portions in which chipping of the apex due to cutting has not occurred, the respective heights are measured using calculation software built into the microscope. Then, the average value of the measurement values of six heights, excluding the two measurement values counted from the maximum and the two measurement values counted from the minimum, is obtained as the average height of the dot-shaped resin portion. When the dot-shaped resin portion is provided on both surfaces of the fiber base material, the average height of the dot-shaped resin portion is the average value of the average heights of one surface and the other surface. If the adhesive interlining is small and a measurement sample with a width of 20 mm and a length of 50 mm cannot be obtained, the size of the measurement sample can be adjusted according to the size of the adhesive interlining, and the number of dot-shaped resin portions for which the height is measured can be adjusted according to the size of the measurement sample.
[0069] The coverage rate of the dot-shaped resin portion in the adhesive interlining is less than 100%, and may be 80.0% or less, 70.0% or less, 60.0% or less, 50.0% or less, 40.0% or less, 30.0% or less, 20.0% or less, less than 20.0%, 15.0% or less, 10.0% or less, 9.0% or less, 8.0% or less, 6.0% or less, 5.0% or less, or 4.0% or less, from the viewpoint of easily obtaining a suitable texture of the adhesive interlining. The coverage rate of the dot-shaped resin portion may be 1.0% or more, 1.5% or more, 2.0% or more, 2.5% or more, 2.8% or more, or 3.0% or more, from the viewpoint of easily obtaining favorable adhesion strength before laundering and the viewpoint of easily obtaining favorable adhesion durability. From these viewpoints, the coverage rate of the dot-shaped resin portion may be 1.0 to 50.0%, 1.5 to 30.0%, 2.0 to 20.0%, 2.5 to 15.0%, 2.8 to 10.0%, or 3.0 to 9.0%.
[0070] The coverage rate of the dot-shaped resin portion is the rate of the area of the portion where the dot-shaped resin portion exists in the adhesive interlining (the portion covered by the dot-shaped resin portion in the adhesive interlining). The coverage rate of the dot-shaped resin portion can be obtained by observing the surface of the adhesive interlining using a microscope, determining the area S1 of the entire surface of the adhesive interlining (the area occupied by the fibers, and does not include the area of the void portions existing between the fibers) and the area S2 of the portion where the dot-shaped resin portion exists in the adhesive interlining, and using the formula "(S2 / S1) × 100". When the dot-shaped resin portion is provided on both surfaces of the fiber base material, the coverage rate of the dot-shaped resin portion is the average value of the coverage rates of one surface and the other surface.
[0071] The laminate of the present embodiment has the adhesive interlining of the present embodiment and an adherend, and the second resin portion of the adhesive interlining is adhered to the adherend. The method for producing a laminate of the present embodiment includes a step of bringing the second resin portion of the adhesive interlining of the present embodiment into contact with an adherend. In the laminate and the method for producing the same of the present embodiment, the second resin portion may include a molten portion.Examples
[0072] Hereinafter, the present invention will be described more specifically with reference to Examples and Comparative Examples, but the present invention is not limited to the following Examples.[Preparation of Adhesive Interlining]
[0073] Adhesive interlinings having the characteristics shown in Table 1 were prepared according to the following procedure.(Example 1)
[0074] First, a fiber base material (weave structure: plain weave, mass A1 per unit area: 80 g / m 2< ) was obtained by weaving using polylactic acid staple fiber (fineness: 147 dtex (single fiber fineness: 1.3 dtex), melting point: 170°C) as warp yarn and weft yarn at a weave density of 60 warp yarns / 25.4 mm and 50 weft yarns / 25.4 mm.
[0075] Next, a dot-shaped first resin portion (circular, 784 dots / square inch (784 dots / (25.4 mm × 25.4 mm)), mass A2 per unit area: 3.0 g / m 2< ) was formed by adhering a first biodegradable polyester (trade name: GX-1473, manufactured by GOO CHEMICAL CO., LTD., melting point: 150°C, glass transition temperature Tg: 49°C) to one surface of the above-mentioned fiber base material. Specifically, the dot-shaped first resin portion was uniformly provided on one surface of the fiber base material using a screen having dot-shaped openings.
[0076] Subsequently, a second resin portion (mass A3 per unit area: 10.0 g / m 2< ) was formed by adhering a particulate second biodegradable polyester (trade name: Luminy PLA Neat resin, manufactured by Luminy PLA Neat resin, melting point: 130°C, glass transition temperature Tg: 65°C, particle size range including 95% of particles: 80 to 120 µm) to the surface of the above-mentioned first resin portion. Specifically, after the first biodegradable polyester adhered to the fiber base material and before the first biodegradable polyester dried, the particulate second biodegradable polyester was scattered. Next, after removing the second biodegradable polyester that had adhered to parts other than the dot-shaped first resin portion, the second resin portion was formed by heating at 140°C for 30 seconds to adhere the second biodegradable polyester. Subsequently, by allowing it to cool to room temperature, an adhesive interlining having a dot-shaped resin portion consisted of the first resin portion and the second resin portion provided on the first resin portion was obtained. The average diameter of the dot-shaped resin portion was 400 µm, the average height was 200 µm, the average center-to-center distance was 0.7 mm, and the coverage rate was 3.5%.(Example 2)
[0077] An adhesive interlining was obtained in the same manner as in Example 1, except that a product with the trade name "Luminy PLA Neat resin 2" (melting point: 160°C, glass transition temperature Tg: 65°C) manufactured by BIOWORKS Co., Ltd. was used as the first biodegradable polyester.(Example 3)
[0078] An adhesive interlining was obtained in the same manner as in Example 1, except that a product with the trade name "Luminy PLA Neat resin" (melting point: 130°C, glass transition temperature Tg: 65°C) manufactured by Luminy PLA Neat resin was used as the first biodegradable polyester.(Example 4)
[0079] An adhesive interlining was obtained in the same manner as in Example 1, except that a product with the trade name "FD92" (melting point: 84°C, glass transition temperature Tg: 40°C) manufactured by Mitsubishi Chemical Corporation was used as the second biodegradable polyester.(Example 5)
[0080] An adhesive interlining was obtained in the same manner as in Example 1, except that a fiber base material (weave structure: plain weave, mass per unit area: 40 g / m 2< ) was obtained by weaving using polylactic acid filament fiber (fineness: 75 dtex, melting point: 170°C) instead of polylactic acid staple fiber as the warp yarn and weft yarn at a weave density of 60 warp yarns / 25.4 mm and 50 weft yarns / 25.4 mm.(Example 6)
[0081] An adhesive interlining was obtained in the same manner as in Example 1, except that a fiber base material (weave structure: plain weave, mass per unit area: 90 g / m 2< ) was obtained by weaving using cotton fiber (fineness: 147 dtex (cotton count: 40s)) as the warp yarn and the same polylactic acid staple fiber as in Example 1 as the weft yarn at a weave density of 90 warp yarns / 25.4 mm and 58 weft yarns / 25.4 mm.(Comparative Example 1)
[0082] An adhesive interlining was obtained in the same manner as in Example 1, except that a product with the trade name "PLAX160" (melting point: 160°C, glass transition temperature Tg: 65°C) manufactured by BIOWORKS Co., Ltd. was used as the first biodegradable polyester, and a product with the trade name "FD92" (melting point: 84°C, glass transition temperature: 40°C) manufactured by Mitsubishi Chemical Corporation was used as the second biodegradable polyester.(Comparative Example 2)
[0083] An adhesive interlining was obtained in the same manner as in Example 1, except that a product with the trade name "PLAX160" (melting point: 160°C, glass transition temperature Tg: 65°C) manufactured by BIOWORKS Co., Ltd. was used as the second biodegradable polyester.(Comparative Example 3)
[0084] An adhesive interlining was obtained in the same manner as in Example 1, except that a product with the trade name "PLAX160" (melting point: 160°C, glass transition temperature Tg: 65°C) manufactured by BIOWORKS Co., Ltd. was used as the first biodegradable polyester, and a product with the trade name "PLAX160" (melting point: 160°C, glass transition temperature: 65°C) manufactured by BIOWORKS Co., Ltd. was used as the second biodegradable polyester.(Comparative Example 4)
[0085] An adhesive interlining was obtained in the same manner as in Example 1, except that the same second resin portion as in Example 1 was formed on one surface of the fiber base material without forming the first resin portion.[Preparation of Laminate]
[0086] After layering the adhesive interlining and cotton (kanakin no. 3; hereinafter, kanakin) for testing so that the dot-shaped resin portion of the above-mentioned adhesive interlining was in contact with the kanakin, a laminate A was obtained by pressing for 10 seconds under conditions of 150°C and 0.3 kgf / cm 2< using a press machine (trade name: BP-V4812D, manufactured by Kobe Electric Works, Ltd.).
[0087] A laminate B was obtained by laminating a cotton knit fabric (trade name: TX-10590, manufactured by Iida Senko Co., Ltd.) on both sides of the above-mentioned adhesive interlining, and then pressing for 30 seconds under conditions of 150°C and 0.3 kgf / cm 2< using a press machine (trade name: BP-V4812D, manufactured by Kobe Electric Works, Ltd.).<Evaluation>(Biodegradability)
[0088] The biodegradability of the above-mentioned adhesive interlining was measured by the following procedure with reference to JIS K 6953-1:2011. After storing 10 g of the above-mentioned adhesive interlining for 5 months in soil in which microorganisms were activated, the mass was measured. All the adhesive interlinings of the Examples and Comparative Examples were completely decomposed and had biodegradability.(Tear Strength)
[0089] The above-mentioned adhesive interlining was cut to obtain a test specimen (warp direction: 63 mm, weft direction: 100 mm). Then, the tear strength (unit: N / 25.4 mm) in the weft direction of this test specimen was measured in accordance with JIS L 1096:2020 Method D (pendulum method). The results are shown in Table 2.(Texture)
[0090] The texture of the above-mentioned adhesive interlining (warp direction: 200 mm, weft direction: 200 mm, excluding Comparative Example 4) was evaluated by the touch of five skilled persons. A rating of "A" was given when all five persons judged that no significant hardening was observed in the adhesive interlining, based on the fiber base material before the dot-shaped resin portion was provided, and a rating of "B" was given when even one of the five persons judged that significant hardening was observed.
[0091] The texture of the above-mentioned laminate A (excluding Comparative Examples 3 and 4) was evaluated by the touch of five skilled persons. A comparative laminate was obtained using a general-purpose adhesive interlining having a fiber base material (a fiber base material composed of polyester false-twist textured yarn) having the same fineness and weave density of warp and weft yarns as the fiber base material used in the evaluation target, and a resin portion (a resin portion composed of polyamide) having the same coverage rate as the dot-shaped resin portion used in the evaluation target. Next, a rating of "A" was given when all five persons judged that no significant hardening was observed in the laminate A, based on the comparative laminate, and a rating of "B" was given when even one of the five persons judged that significant hardening was observed.(Adhesion Strength Before and After Laundering)
[0092] The adhesion strength (unit: cN / 25.4 mm) of the adhesive interlining with respect to the kanakin in the above-mentioned laminate A (excluding Comparative Examples 2 to 4) was measured in accordance with JIS L 1086:2020 (Testing methods for fusible interlining fabrics and laminated fabrics). In addition, after subjecting the above-mentioned laminate A (excluding Comparative Examples 2 to 4) to laundering in accordance with JIS L 0217 Method 103, the adhesion strength (unit: cN / 25.4 mm) of the adhesive interlining with respect to the kanakin was measured in accordance with JIS L 1086 (Testing methods for fusible interlining fabrics and laminated fabrics). The results are shown in Table 2.(Resin Strike-through)
[0093] Using a universal testing machine (trade name: AG-I, manufactured by Shimadzu Corporation), the adhesion strength (peel rate: 100 mm / min, unit: cN / 25.4 mm) during T-peeling between the laminate B and the cotton knit on the side where the dot-shaped resin portion was not placed in the above-mentioned laminate B (excluding Comparative Examples 1 to 4) was measured. The results are shown in Table 2. A high adhesion strength on the side where the dot-shaped resin portion is not placed suggests that the resin component in the adhesive interlining has seeped out to the side where the dot-shaped resin portion is not placed.(Moisture Absorption and Quick-drying Property)
[0094] After dropping 0.3 mL of water onto the center of the surface on the dot-shaped resin portion side of the above-mentioned adhesive interlining, the adhesive interlining was left to stand at 25°C for 50 minutes. Then, the mass of the adhesive interlining was measured, and the residual moisture content was obtained as the amount of increase in moisture relative to that before dropping the water. A case where the residual moisture content was less than that of Example 6 was judged as "A". The results are shown in Table 2. [Table 1]Lower resin portionAdhesive resin portionFiber base materialFirst biodegradable polyesterSecond biodegradable polyesterMelting point difference (M1-M2) [°C]Average value MA of melting points M1, M2 [°C]Melting point difference (M3-MA) [°C]Warp yarnWeft yarnMelting point M3 of polylactic acid fiber [°C]Melting point M1 [°C]Tg [°C]Melting point M2 [°C]Tg [°C]Example 1PresentPresentPolylactic acid staple fiberPolylactic acid staple fiber17015049130652014030Example 2PresentPresentPolylactic acid staple fiberPolylactic acid staple fiber17016065130653014525Example 3PresentPresentPolylactic acid staple fiberPolylactic acid staple fiber1701306513065013040Example 4PresentPresentPolylactic acid staple fiberPolylactic acid staple fiber1701504984406611753Example 5PresentPresentPolylactic acid filament fiberPolylactic acid filament fiber17015049130652014030Example 6PresentPresentCotton fiberPolylactic acid staple fiber17015049130652014030Comparative Example 1PresentPresentPolylactic acid staple fiberPolylactic acid staple fiber1701606584407612248Comparative Example 2PresentPresentPolylactic acid staple fiberPolylactic acid staple fiber1701504916065-1015515Comparative Example 3PresentPresentPolylactic acid staple fiberPolylactic acid staple fiber1701606516065016010Comparative Example 4AbsentPresentPolylactic acid staple fiberPolylactic acid staple fiber170--13065--- [Table 2] Tear strength [N / 25.4mm]TextureAdhesion strength [cN / 25.4mm]Resin strike-through [cN / 25.4mm]Moisture absorption and quick-drying propertyAdhesive interliningLaminateBefore launderingAfter laundering (Adhesion durability)Example 18.7AA40030015AExample 28.7AA40030015AExample 38.7AA35020050AExample 48.7AA50010015AExample 515.7AA70060015AExample 68.7AA40030015-Comparative Example 18.7AA50070-AComparative Example 26.7AB---AComparative Example 30.8B----AComparative Example 40.3-----A
Examples
example 1
(Example 1)
[0074]First, a fiber base material (weave structure: plain weave, mass A1 per unit area: 80 g / m 2< ) was obtained by weaving using polylactic acid staple fiber (fineness: 147 dtex (single fiber fineness: 1.3 dtex), melting point: 170°C) as warp yarn and weft yarn at a weave density of 60 warp yarns / 25.4 mm and 50 weft yarns / 25.4 mm.
[0075]Next, a dot-shaped first resin portion (circular, 784 dots / square inch (784 dots / (25.4 mm × 25.4 mm)), mass A2 per unit area: 3.0 g / m 2< ) was formed by adhering a first biodegradable polyester (trade name: GX-1473, manufactured by GOO CHEMICAL CO., LTD., melting point: 150°C, glass transition temperature Tg: 49°C) to one surface of the above-mentioned fiber base material. Specifically, the dot-shaped first resin portion was uniformly provided on one surface of the fiber base material using a screen having dot-shaped openings.
[0076]Subsequently, a second resin portion (mass A3 per unit area: 10.0 g / m 2< ) was formed by adhering a particul...
example 2
(Example 2)
[0077]An adhesive interlining was obtained in the same manner as in Example 1, except that a product with the trade name "Luminy PLA Neat resin 2" (melting point: 160°C, glass transition temperature Tg: 65°C) manufactured by BIOWORKS Co., Ltd. was used as the first biodegradable polyester.
example 3
(Example 3)
[0078]An adhesive interlining was obtained in the same manner as in Example 1, except that a product with the trade name "Luminy PLA Neat resin" (melting point: 130°C, glass transition temperature Tg: 65°C) manufactured by Luminy PLA Neat resin was used as the first biodegradable polyester.
Claims
1. An adhesive interlining comprising: a fiber base material including a polylactic acid fiber; a first resin portion provided in a dot pattern on at least one surface of the fiber base material; and a second resin portion provided on the first resin portion, wherein the first resin portion contains a first biodegradable polyester having a melting point M1 of 100 to 180°C, the second resin portion contains a second biodegradable polyester having a melting point M2 of 80 to 180°C, a melting point difference (M1 - M2) of the melting point M1 relative to the melting point M2 is 0 to 70°C, and a melting point difference (M3 - MA) of a melting point M3 of the polylactic acid fiber relative to an average value MA of the melting point M1 and the melting point M2 is 15°C or more.
2. The adhesive interlining according to claim 1, wherein the melting point difference (M1 - M2) is 10 to 45°C, and the melting point difference (M3 - MA) is 18 to 35°C.
3. The adhesive interlining according to claim 1, wherein the fiber base material consists only of the polylactic acid fiber.
4. The adhesive interlining according to any one of claims 1 to 3, wherein the fiber base material includes polylactic acid filament fiber.