JP2010095808A - Clothes - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide clothes excellent in stretchability of an edge rim portion and an adhesion portion when processing an edge rim portion of the clothes using thermoplastic polyurethane resin, or joining a plurality of parts composing the clothes. <P>SOLUTION: The clothes have an adhesion portion where a clothes fabric is melt-stuck by thermoplastic polyurethane resin. The adhesion portion is a part adhesion portion for composing the clothes by sticking a plurality of edge rim portions and/or fabric parts of the clothes. The adhesion portion has 80%R/S in an extension recoverability test of not less than 35%, and a residual strain of not more than 18%. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  According to the present invention, the thermoplastic polyurethane resin is disposed at an edge of a garment and / or a joint of a plurality of parts constituting the garment, and the thermoplastic polyurethane resin is melted by heating, so that the edge and / or The present invention relates to a garment in which the joint is melt bonded.

  Conventionally, the edge part of clothing and the joint part of the parts constituting the clothing are generally sewn with a thread, but in recent years, the edge part of the clothing is used by using an adhesive resin tape without sewing. A garment (see Patent Document 2) produced by joining a plurality of fabric parts by a forming method (see Patent Document 1) or a heat-sealing tape has been proposed.

  However, for example, when used on a part that fixes clothing to the human body when worn, such as the waist part of shorts or the upper and lower tapes of a brassiere, there is a problem that the elastic recovery is inferior, so that the shift occurs, or the elastic ribbon Further, there is a problem in that the adhesive portion becomes thick and the wearing comfort is inferior when using the edging tape, and further improvement has been desired.

  Hot melt resins generally used as adhesive resin tapes include polyurethane, polyamide, polyester, polyethylene, ethylene-vinyl acetate copolymer, ethylene-ethyl acrylate copolymer, and ethylene-atactic polypropylene copolymer. Polymers, polyvinyl chlorides, polyvinyl acetates, acrylics, and the like can be mentioned, but polyurethane resins are preferred in order to maintain stretchability, cold resistance, water resistance, and a soft feeling at the bonded part. .

  Polyether is generally used as the soft segment component of the polyurethane resin. Among them, polyurethane resins using polytetramethylene ether glycol (hereinafter referred to as PTMG), which is a polymer of tetrahydrofuran (hereinafter referred to as THF), are excellent in terms of elastic properties, low temperature properties, hydrolysis resistance, and the like. Therefore, it is used in various fields. However, in a tape obtained from, for example, a film of a polyurethane resin using PTMG, the elastic function is reduced due to crystallization of the soft segment when stretched. In addition, the polyurethane tape using PTMG has a problem that the elastic function of the tape is remarkably lowered when a polymer design with a low melting point is used to ensure thermal adhesion.

  For the purpose of improving these elastic functions, attempts have been made to suppress crystallization of soft segments in polyurethane using various diols. However, polyurethanes that have yet reached a level that sufficiently satisfies the above-mentioned elastic functions ( There is no document describing, for example, polyurethane films.

  For example, it has been conventionally proposed to use a copolymer type polyether polyol as a soft segment of polyurethane. A polyether glycol copolymerized with neopentyl glycol (Patent Document 3) and a polyurethane using a copolymerized polyether glycol (Patent Document 4) are described. However, with these techniques, since the copolymerization rate is low, it is difficult to obtain a polyurethane tape having improved mechanical properties such as strength, elongation, and elastic recovery rate when molded into a tape or film. Moreover, although the polyurethane (patent document 5) using the copolymerization polyol of THF and 3-alkyltetrahydrofuran is described, there is no description about the stretch recovery property at the time of expansion / contraction. Moreover, it is described that the elastic function is improved by polyurethane obtained by copolymerizing neopentyl glycol and / or 3-methyl-1,5-pentanediol in an amount of 8 to 85 mol% (Patent Document 6). There is no disclosure regarding polyurethane and clothing using the same.

JP 2007-212369 A JP 2005-226175 A JP 61-120830 A US Pat. No. 4,658,065 JP-A-5-239177 JP-A-2-49022

  An object of the present invention is to treat the edge of a garment and / or stretch the garment edge or joint when a plurality of parts constituting the garment are joined using a thermoplastic polyurethane resin. It is to improve.

  The configuration of the present invention is as follows.

[1] A garment having an adhesive portion obtained by melt-bonding a garment fabric with a thermoplastic polyurethane resin,
The bonding part is a part joining part for constituting a garment by joining a plurality of edge parts of clothing and / or cloth parts,
The garment wherein 80% R / S in the stretch recovery test of the bonded portion is 35% or more, and the residual strain of the bonded portion is 18% or less.

並びに構造単位（Ｂ）：

及び／又は構造単位（Ｃ）：

からなり、かつ下記式（１）：
０．０８≦（Ｍ_B＋Ｍ_C）／（Ｍ_A＋Ｍ_B＋Ｍ_C）≦０．８５ （１）
｛式中、Ｍ_A、Ｍ_B及びＭ_Cは、それぞれ、ポリアルキレンエーテルジオール化合物中に存在する構造単位（Ａ）、（Ｂ）及び（Ｃ）のモル数である。｝
を満たすもの
と反応させて得られる構造を含有する、上記［１］に記載の衣類。 [2] The thermoplastic polyurethane resin is
(I) an organic polyisocyanate compound;
(Ii) A polyalkylene ether diol compound having a molecular weight of 300 to 30,000, the following structural unit (A):

And structural unit (B):

And / or structural unit (C):

And the following formula (1):
0.08 ≦ (M _B + M _C ) / (M _A + M _B + M _C ) ≦ 0.85 (1)
{In the formula, M _A , M _B and M _C are the number of moles of the structural units (A), (B) and (C) present in the polyalkylene ether diol compound, respectively. }
Clothing as described in said [1] containing the structure obtained by making it react with what satisfy | fills.

  [3] The clothing according to [2], wherein the thermoplastic polyurethane resin further contains a structure derived from a chain extender composed of an active hydrogen-containing compound that reacts with an isocyanate group.

  [4] The clothing according to [3], wherein the active hydrogen-containing compound that reacts with the isocyanate group is a diol.

  According to the present invention, when the edge portion of the garment is processed using the thermoplastic polyurethane resin and / or the plurality of fabric parts constituting the garment are joined, the thickness of the edge portion or the joined portion of the garment is reduced. Without increasing, the stretchability is remarkably improved, and a garment that follows the movement when worn can be obtained.

The present invention will be specifically described below.
The garments targeted by the present invention include all garments such as shorts, shirts, camisoles, slips, body suits, briefs, trunks, underwear, girdles, bras, spats, stomach wraps, pantyhose, tights, socks and the like. Innerwear, swimwear, training wear, leotards, ski wear, sportswear for various competitions, outdoor wear and other sportswear, outerwear such as T-shirts, jackets, sweaters, vests, pants, skirts, cutsews, coats, jumpers, Examples include, but are not limited to, garments and clothing lining, clothing such as gloves, hats, and mufflers, nightwear such as pajamas and gowns, and nursing wear.

  The clothing of the present invention includes, for example, natural fibers such as cotton, wool, hemp and silk, regenerated fibers such as rayon and cupra, semi-synthetic fibers such as acetate and triacetate, polyamide fibers, polyester fibers, polyurethane elastic fibers, acrylic fibers It can be a woven fabric, a non-woven fabric, a knitted fabric or the like formed from a material selected from synthetic fibers such as fibers, polypropylene fibers, and vinyl chloride fibers.

Examples of the structure of the edge portion in the garment of the present invention include, but are not limited to, a folded structure in which the edge portion of the garment is folded and the inner surfaces thereof are bonded and fixed.
In addition, as the joining of a plurality of fabric parts constituting the clothing in the present invention, the following example,
-Joining of garment structural parts such as front body fabric parts and back body fabric parts; and-Joining of garment bodies and decorative parts such as pockets, laces, ribbons, motifs, appliques, emblems, woven names, fasteners, etc. Although it is mentioned, it is not limited to these.

  The garment of the present invention has an adhesive portion formed by melt-bonding a garment fabric with a thermoplastic polyurethane resin. The adhesive part is a part joining part for constituting a garment by joining a plurality of fabric edge parts and / or cloth parts. In the bonded portion, 80% R / S in an elongation recovery property test described later, which is an index of elongation recovery property, is 35% or more, preferably 40% or more, more preferably 45% or more. If the 80% R / S is lower than 35%, the back power is insufficient at the time of wearing, so that there is a problem that an appropriate fit feeling cannot be obtained at the time of wearing, and a problem that clothing is displaced.

  The residual strain of the bonded portion is 18% or less, preferably 16% or less, and more preferably 15%. If the residual strain exceeds 18%, the return of the fabric after stretching becomes worse, so that there are problems such as garment slippage when worn, and problems such as deterioration in durability as a product due to large dimensional changes.

Said 80% R / S can be calculated | required with the following method. That is, a tape-like sample sampled in a strip shape (width 3 cm, length 15 cm) so as to include 80% or more of an adhesive portion in the longitudinal direction is prepared. When the adhesion part is less than 12 cm, the sample length is set so that the adhesion part exceeds 80%. Using a tensile tester (for example, Tensilon Universal Tester RTC-1210A: manufactured by Orientec Co., Ltd.), under the condition of 20 ° C. and 65% RH, the gripping allowance of the chuck is raised and lowered to extend in the longitudinal direction of the sample. The sample is sandwiched between 2.5 cm and stretched 100% at 300 mm / min, and then recovered. 80% R / S is obtained from the following formula from the SS curve of the elongation recovery measurement, where L1 is the stress at 80% elongation and L2 is the stress at 100% recovery after recovery to 80%.
80% R / S = L2 / L1 × 100

  Further, the residual strain is obtained as an elongation L3 at which the stress becomes zero after recovery of elongation of the SS curve.

  Although the shape of the thermoplastic polyurethane resin arrange | positioned in the adhesion part in the clothing of this invention is not specifically limited, From a point, such as workability, it is preferable that they are a film, a tape, a string-like thing, or a fibrous thing. When the garment edge or the joint part is linear, the section of the thermoplastic polyurethane resin is preferably flat, preferably a film, a tape, a flat string, a monofilament with a flat cross section, etc. It is done. When the end edge part or the part joining part is curved, the cross section of the thermoplastic polyurethane resin is preferably a shape close to a circle, and a string-like object, a monofilament, a multifilament or the like having a cross section close to a circle is preferable.

  As the thermoplastic polyurethane resin, a polyurethane containing a structure obtained by reacting an organic polyisocyanate compound with a polyalkylene ether diol can be used. Furthermore, active hydrogen-containing compounds that react with isocyanate groups can be used as chain extenders.

並びに構造単位（Ｂ）：

及び／又は構造単位（Ｃ）：

からなり、かつ下記式（１）：
０．０８≦（Ｍ_B＋Ｍ_C）／（Ｍ_A＋Ｍ_B＋Ｍ_C）≦０．８５ （１）
｛式中、Ｍ_A、Ｍ_B及びＭ_Cは、それぞれ、ポリアルキレンエーテルジオール化合物中に存在する構造単位（Ａ）、（Ｂ）及び（Ｃ）のモル数である。｝
を満たすもの（以下、ポリアルキレンエーテルジオール化合物（ｉｉ）ともいう。）
と反応させて得られる構造を含有する。 More preferably, the thermoplastic polyurethane resin used in the present invention is
(I) an organic polyisocyanate compound (hereinafter also referred to as organic polyisocyanate compound (i)),
(Ii) A polyalkylene ether diol compound having a molecular weight of 300 to 30,000, the following structural unit (A):

And structural unit (B):

And / or structural unit (C):

And the following formula (1):
0.08 ≦ (M _B + M _C ) / (M _A + M _B + M _C ) ≦ 0.85 (1)
{In the formula, M _A , M _B and M _C are the number of moles of the structural units (A), (B) and (C) present in the polyalkylene ether diol compound, respectively. }
(Hereinafter also referred to as polyalkylene ether diol compound (ii))
Contains the structure obtained by reacting with.

  Examples of the organic polyisocyanate compound (i) include compounds having at least two isocyanate groups in the molecule, such as 4,4′-diphenylmethane diisocyanate, methylene-bis (4-phenylisocyanate), methylene-bis (3- Methyl-4-phenyl isocyanate), 2,4-tolylene diisocyanate, 2,6-tolylene diisocyanate, m- or p-xylylene diisocyanate, α, α, α ′, α′-tetramethyl-xylylene diisocyanate, m- or p-phenylene diisocyanate, 4,4′-dimethyl-1,3-xylylene diisocyanate, 1-alkylphenylene-2,4 or 2,6-diisocyanate, 3- (α-isocyanatoethyl) phenyl isocyanate, 2 , 6-Diethylphenylene- 1,4-diisocyanate, diphenyl-dimethylmethane-4,4-diisocyanate, diphenyl ether-4,4′-diisocyanate, naphthylene-1,5-diisocyanate, 1,6-hexamethylene diisocyanate, methylene-bis (4-cyclohexylisocyanate) ), 1,3- or 1,4-cyclohexylene diisocyanate, trimethylene diisocyanate, tetramethylene diisocyanate, pentamethylene diisocyanate, hexamethylene diisocyanate and isophorone diisocyanate.

The polyalkylene ether diol compound (ii) comprises the above structural unit (A), the structural unit (B) and / or the structural unit (C), and is defined by the above formula (1). A segment having a methyl group in the chain is contained in an amount of 8 mol% to 85 mol%. When the segment having a methyl group in the side chain is 8 mol% or more and 85 mol% or less, a thermoplastic polyurethane resin capable of forming a heat-bonded polyurethane film excellent in various elastic functions, for example, elongation at break and elastic recoverability is obtained. It is done. Therefore, by using the thermoplastic polyurethane resin in the form of the heat-bonded polyurethane film for bonding of clothing, the stretchability of the edge or joint of the clothing can be further improved. The range of the segment having a methyl group in the side chain is more preferably the range represented by the following formula (2), more preferably the following formula (3).
0.09 ≦ (M _B + M _C ) / (M _A + M _B + M _C ) ≦ 0.45 (2)
0.09 ≦ (M _B + M _C ) / (M _A + M _B + M _C ) ≦ 0.30 (3)
(In the formulas (2) and (3), M _A , M _B and M _C have the same meaning as explained in the above-described formula (1).)

  The polyalkylene ether diol compound (ii) includes, for example, THF, neopentyl glycol and / or 3-methyl-1,5-pentanediol, or a dehydrated cyclic low-molecular compound such as 3,3-dimethyloxetane. Is produced by reacting a heteropolyacid with a controlled hydration number as a catalyst according to the method described in JP-A-61-123628. The obtained copolymer diol can be easily produced by variously changing the reaction method and conditions so as to obtain a predetermined molecular weight, copolymer component composition and copolymerization ratio.

  The neopentyl unit and / or 3-methyl-1,5-pentylene unit constituting the polyalkylenediol compound (ii) may be distributed in random or block form with respect to the tetramethylene unit. In the reaction using an acid catalyst, it can be distributed in either a block shape or a random shape, and the crystallinity of the resulting polyalkylene ether diol compound (ii) can be effectively changed in various ways and used in the present invention. A diol having each crystallinity can be produced in accordance with the properties of the thermoplastic polyurethane resin.

  The number average molecular weight of the polyalkylene ether diol compound (ii) used in the present invention is preferably 300 to 30,000, more preferably 500 to 5,000, and still more preferably 900 to 2,000. When the number average molecular weight is less than 300, the elongation of the tape is low, and it tends to be difficult to stretch when worn. Further, when the number average molecular weight is larger than 30,000, the strength of the tape tends to be lowered.

  The polyalkylene ether diol compound (ii) is used as another diol, for example, a diol having a number average molecular weight of about 250 to 20,000, such as polyoxyethylene glycol, polyoxypropylene glycol, polyoxytetramethylene glycol and polyoxypentamethylene. Homopolyether diols such as glycols, copolymer polyether diols composed of two or more oxyalkylenes having 2 to 6 carbon atoms, adipic acid, sebacic acid, maleic acid, itaconic acid, azelaic acid, malonic acid, etc. One or more dibasic acids and ethylene glycol, 1,2-propylene glycol, 1,3-propylene glycol, 2,2-dimethyl-1,3-propanediol, 1,4-butanediol, 1, 3-butanediol, hexame Polyester diol, polyester amide diol, polyester obtained from one or more of glycols such as lenglycol, diethylene glycol, 1,10-decanediol, 1,3-dimethylolcyclohexane and 1,4-dimethylolcyclohexane Ether diol, poly-ε-caprolactone diol, polyvalerolactone diol and other polylactone diols, polycarbonate diol, polyacryl diol, polythioether diol or polythioester diol, or a copolymer of these diols, etc. Can be used together.

  The thermoplastic polyurethane resin can further contain a structure derived from a chain extender composed of an active hydrogen-containing compound (iii) that reacts with an isocyanate group. Examples of the active hydrogen-containing compound (iii) that reacts with an isocyanate group include (i) low molecular weight diols such as ethylene glycol, 1,2-propylene glycol, 1,3-propylene glycol, and 2,2-dimethyl-1. , 3-propanediol, 1,4-butanediol, 1,3-butanediol, hexamethylene glycol, diethylene glycol, 1,10-decanediol, 1,3-dimethylolcyclohexane or 1,4-dimethylolcyclohexanehydrazine, (B) A compound having an amino group having a linear or branched aliphatic, alicyclic or aromatic active hydrogen having 2 to 10 carbon atoms, such as ethylenediamine, 1,2-propylenediamine, trimethylenediamine, hexa Methylenediamine, hydrazine, carbodihydrazide , Adipene dihydrazide or sebacic acid dihydrazide, (c) monofunctional amino compounds such as secondary amines, ie dimethylamine, methylethylamine, diethylamine, methyl-n-propylamine, methyl-isopropylamine, diisopropylamine, methyl- n-butylamine, methyl-isobutylamine or methylisoamylamine, (d) water, (e) the polyalkylene ether diol compound (ii) not reacted with the organic polyisocyanate compound (i), (f) known And diols having a number average molecular weight of about 250 to 5,000 and (g) monohydric alcohols. Diols are preferable, and 1,4-butanediol and / or dialkylene glycol having 4 to 8 carbon atoms are more preferable.

  The organic polyisocyanate compound (i) and the active hydrogen-containing compound (iii) that reacts with the isocyanate group may be used alone, or may be used in advance as necessary.

  Regarding the operation of the polyurethane reaction, a known polyurethane reaction technique can be used. For example, the polyalkylene ether diol (ii) and the organic polyisocyanate compound (i) are mixed at a ratio of 1: 1.1 to 1: 3.5 (equivalent ratio) under an excess condition of the organic polyisocyanate compound (i). After making it react and synthesize | combine a urethane prepolymer, the active hydrogen containing compound (iii) which reacts with an isocyanate group can be added and made to react with respect to the isocyanate group in this prepolymer. Alternatively, the organic polyisocyanate compound (i), the polyalkylene ether diol compound (ii), and the active hydrogen-containing compound (iii) that reacts with the isocyanate group can also be reacted by a one-shot polymerization method in which they are reacted simultaneously in one stage.

  A smaller equivalent ratio of the organic polyisocyanate compound (i) to the polyalkylene ether diol compound (ii) is preferable in that the thermal adhesive peeling stress is higher, more preferably 1: 1.1 to 1: 3.0, and further Preferably it is 1: 1.3-1: 2.0, Most preferably, it is 1: 1.5-1: 1.9.

  On the other hand, it is preferable that the equivalent ratio of the organic polyisocyanate compound (i) to the polyalkylene ether diol compound (ii) is large to some extent from the viewpoint of maintaining power as a reinforcing material after heat bonding, and more preferably 1: 1.5. ˜1: 3.5, more preferably 1: 1.8 to 1: 3.0, and particularly preferably 1: 1.9 to 1: 2.7.

  In any case, the equivalent of the isocyanate group of the organic polyisocyanate compound (i), the hydroxyl group of the polyalkylene ether diol compound (ii), and the active hydrogen of the active hydrogen-containing compound (iii) that reacts with the isocyanate group is approximately equivalent. It is preferable to make it react so that.

  In the above polyurethane formation reaction, a catalyst, a stabilizer and the like can be added as necessary. Examples of the catalyst include triethylamine, tributylamine, dibutyltin dilaurate and stannous octylate. Examples of the stabilizer include other compounds usually used in polyurethane resins, such as ultraviolet absorbers, antioxidants, and light stabilizers. Agents, anti-gas stabilizers, antistatic agents, colorants, matting agents and fillers.

By adopting the configuration as described above, it is possible to obtain a thermoplastic polyurethane resin having not only excellent thermal adhesiveness but also high stress retention by a polymer design having a low melting point. In the present invention, this thermoplastic polyurethane resin is used to treat the edge of clothing and / or to join a plurality of fabric parts. Therefore, even at low temperature (eg, about 130 ° C.), high thermal adhesive peel stress and high Since the stress retention is obtained, durability against washing (particularly heat resistance) can be expressed.
The melting point (elution start temperature) measured by a flow tester of the thermoplastic polyurethane resin used in the present invention is more preferably 80 ° C. or more and less than 130 ° C., more preferably 82 ° C. or more and less than 125 ° C., 85 ° C. As mentioned above, below 120 degreeC is especially preferable. The melting point can be measured by the following method. That is, using a flow tester (for example, Shimadzu flow tester CFT-500D type (manufactured by Shimadzu Corporation)) under the conditions of a sample amount of 1.5 g, a die (nozzle) diameter of 0.5 mm, and a thickness of 1.0 mm. After applying an extrusion load of 294 N and preheating at an initial set temperature of 100 ° C. for 240 seconds, the temperature is increased at a constant rate of 3 ° C./min, and a plunger stroke-temperature curve drawn at that time is obtained. As the temperature is raised at a constant rate, the sample is gradually heated and the polymer begins to flow out. The temperature at this time is defined as the melting point (elution start temperature). Specifically, as shown in FIG. 1, the intersection point between the tangent of the rising portion of the plunger stroke-temperature curve and the tangent of the point where the inclination before the rise is minimum is obtained as the elution start temperature.

  On the other hand, in order to maintain power as a reinforcing material after heat bonding, the thermoplastic polyurethane resin used in the present invention preferably has an MFR (melt flow rate) of 15 or more and 25 or less, 17 or more, 24 or less is more preferable, and 18 or more and 23 or less are more preferable. When MFR is lower than 15, the thermal adhesive force tends to decrease. On the other hand, when it is larger than 25, the power as the reinforcing material tends to be small. MFR is an index of fluidity (that is, shear viscosity) under a certain condition. When MFR is in the above range, an excellent elastic function can be suitably expressed. MFR can be measured by a melt indexer.

  The present invention will be described in more detail with reference to examples, but the present invention is not limited to these examples. The measured values in Examples and Comparative Examples are obtained by the following measuring methods.

[Measurement of melting point (elution start temperature)]
Using a Shimadzu flow tester CFT-500D type (manufactured by Shimadzu Corporation), an extrusion load of 294N was applied under the conditions of a sample amount of 1.5 g, a die (nozzle) diameter of 0.5 mm, and a thickness of 1.0 mm. Then, after preheating for 240 seconds at an initial set temperature of 100 ° C., the temperature was increased at a constant rate of 3 ° C./min, and a plunger stroke-temperature curve drawn at that time was determined. As the temperature was raised at a constant rate, the sample was gradually heated and the polymer began to flow out. The temperature at this time was defined as the melting point (elution start temperature). Specifically, as shown in FIG. 1, the intersection point between the tangent of the rising part of the plunger stroke-temperature curve and the tangent of the point where the inclination before the rising is minimized is determined as the elution start temperature.

[Measurement of MFR (JIS K 7210 (1995))]
Using a melt indexer type S-101 manufactured by Toyo Seiki Seisakusho, the measurement was carried out at 190 ° C. and a load of 2.16 kg.

[80% R / S and residual strain measurement]
In a garment in which a garment fabric was bonded with a thermoplastic polyurethane resin, a tape-like sample was prepared that was sampled into a strip shape (width 3 cm, length 15 cm) so as to include an adhesive portion of 80% or more in the longitudinal direction. When the adhesion part is less than 12 cm, the sample length is set so that the adhesion part exceeds 80%. Using a tensile tester (Tensilon Universal Tester RTC-1210A: manufactured by Orientec Co., Ltd.), the gripping allowance of the chuck is set to 2 each up and down so as to extend in the longitudinal direction of the tape at 20 ° C. and 65% RH. The sample was sandwiched with a thickness of 0.5 cm, stretched 100% at 300 mm / min, and then recovered. In FIG. 2, the schematic diagram of the SS curve of the elongation recovery property measurement in this invention is shown. L1 was the stress at 80% elongation, L2 was the stress when recovered to 80% after 100% elongation, and 80% R / S was determined by the following formula.
80% R / S = L2 / L1 × 100

  The residual strain was determined as the elongation L3 at which the stress of the SS curve after elongation recovery was zero.

[Wear evaluation]
Panelers were put on 10 shorts by placing thermoplastic polyurethane resin at the waist and crotch edge and side joints of the shorts, and melting and bonding the fabric and the resin by heating. Eight hours later, the wear criteria and the shorts were judged according to the following criteria, the total number of people marked with ○ was counted for the wear feeling, and the fit was calculated by the total score of 10 people.

(A feeling of wearing)
○: The adhesive part does not bother when worn and is comfortable.
X: It is uncomfortable because the adhesive part feels to touch the skin when worn.
(Fit feeling)
5 points: Very fit and comfortable following movement.
3 points: The fit is unsatisfactory, but there is no gap.
1 point: The feeling of fit is weak and the feeling of slipping off is felt.

[Thickness measurement]
The thickness of the edge part of the waist part of clothing and the side joint part was measured with a thickness meter (micrometer PK-1012: manufactured by Mitutoyo Corporation).

[Example 1]
As the polyalkylene ether diol compound (ii), PTXG1800 manufactured by Asahi Kasei Fibers Co., Ltd., having a copolymer composition M _B / (M _A + M _B ) of 0.1, PTXG 1500 g, and organic polyisocyanate compound (i) 365 g of 4,4′-diphenylmethane diisocyanate was reacted for 180 minutes at 80 ° C. under a nitrogen gas stream to obtain a polyurethane prepolymer having isocyanate groups at both ends. Next, after rapidly cooling to 25 ° C., 56.3 g of 1,4-butanediol as an active hydrogen-containing compound (iii) that reacts with an isocyanate group was added to the polyurethane prepolymer and stirred for 30 minutes. Got.

  After 9 g of Adeka AO-60 as an antioxidant and 9 g of Adeka LA-36 as a yellowing inhibitor were mixed with this polyurethane, the mixture was discharged to a Teflon (registered trademark) tray, and the entire tray was placed in a hot air oven at 130 ° C. Annealing was performed for 3 hours to obtain a thermoplastic polyurethane resin. This thermoplastic polyurethane resin had MFR (190 ° C.) of 8.0 and had thermoplastic properties.

  This thermoplastic polyurethane resin is pulverized into a powder of about 3 mm by a pulverizer UG-280 manufactured by Horai Co. to produce a thermoplastic polyurethane resin powder, which is further processed by a twin screw extruder KZW15TW-45HG manufactured by Technobel. It was melt extruded. The melt was extruded from a T-die having a width of 150 mm and a lip width of 1.0 mm onto release paper (manufactured by Lintec Corporation) at a die temperature of 200 ° C. to obtain a film having a thickness of 200 μm. This film was slit and a 6 mm wide slit tape was obtained. The melting point (elution start temperature) of this tape was 114 ° C.

  Using a 40-gauge two-sheet tricot knitting machine, nylon 22dtex / 7f full dull yarn on the front heel (F), spandex 22dT on the back heel (M), the structure is knitted with a denby structure, dyed in the usual way, Finishing was performed to obtain a knitted fabric having a course number of 72 / inch, a well number of 72 / inch, and a thickness of 320 μm. This knitted fabric is cut into a shorts pattern, the above-mentioned tape having a width of 6 mm is arranged along the ends of the waist and the crotch, and the width of the tape is folded back to a heat press machine (OA350 type; Asahi Bonded for 10 seconds at a pressure of 0.2 MPa and a temperature of 100 ° C. using a test press (produced by Osaka Asahi Co., Ltd.) In addition, the tape was placed at the joint on the side of the shorts and bonded by a hot press. The shorts of Example 1 were obtained, and the waist part of the garment of Example 1 thus obtained was sampled into a strip shape (width 3 cm, length 15 cm) so that the longitudinal direction of the adhesive tape was the longitudinal direction, and 80% While measuring R / S and residual strain, separate wear evaluation and thickness measurement of the edge of the waist were performed.

[Example 2]
Various evaluations were performed in the same manner as in Example 1 except that the joint part on the side of the shorts was sampled into a strip shape (width 3 cm, length 15 cm) so that the longitudinal direction of the adhesive tape was the longitudinal direction.

[Example 3]
Various evaluations were performed in the same manner as in Example 1 except that the thickness of the slit tape was 100 μm.

[Example 4]
The thermoplastic polyurethane resin powder obtained by the same method as in Example 1 was melt-extruded with a single screw extruder having a diameter of 50 mm, extruded into a flat fiber from a 30 mm wide and 0.2 mm thick nozzle, stretched, wound A flat yarn having a width of 8 mm and a thickness of 170 μm was obtained. Using this flat yarn, the fabric was hot-pressed by the same method as in Example 1 to obtain the shorts of Example 3, and the same evaluation as in Example 1 was performed.

[Example 5]
The shorts of Example 5 were the same as Example 3 except that the amount of PTXG1800 was 1400 g, the amount of 4,4′-diphenylmethane diisocyanate was 389.4 g, and the amount of 1,4-butanediol was 35 g. And the same evaluation as in Example 1 was performed. The MFR (190 ° C.) of the thermoplastic polyurethane resin at this time was 18.

[Comparative Example 1]
As polyalkylene ether diol, PTMG 1,000 manufactured by Asahi Kasei Fibers Co., Ltd. was used, and 1400 g of said PTMG and 490.6 g of 4,4′-diphenylmethane diisocyanate were reacted while stirring at 80 ° C. for 180 minutes in a nitrogen gas stream. A polyurethane prepolymer having an isocyanate group at the terminal was obtained. Subsequently, after cooling this to 25 degreeC, 50.4g of 1, 4- butanediol was added to the said polyurethane prepolymer, and it stirred for 30 minutes. After 9 g of Adeka AO-60 as an antioxidant and 9 g of Adeka LA-36 as a yellowing inhibitor were mixed with this polyurethane, the mixture was discharged to a Teflon (registered trademark) tray, and the entire tray was placed in a hot air oven at 130 ° C. A polyurethane resin was obtained by annealing for 3 hours. This polyurethane resin had a MFR (190 ° C.) of 7.8 and had thermoplastic properties.

  This polyurethane resin is pulverized into a powder of about 3 mm by a pulverizer UG-280 manufactured by Horai Co., to produce a polyurethane resin powder, which is further melt-extruded by a twin screw extruder KZW15TW-45HG manufactured by Technobel. . The melt was extruded onto release paper from a T die having a width of 150 mm and a lip width of 1.0 mm at a die temperature of 200 ° C. to obtain a film having a thickness of 200 μm. This film was slit and a 6 mm wide slit tape was obtained. This tape was hot-pressed on the dough in the same manner as in Example 1 to obtain the shorts of Comparative Example 1, and the same evaluation as in Example 1 was performed.

[Comparative Example 2]
The polyurethane resin powder obtained by the same method as in Comparative Example 1 was extruded by the same method as in Example 4 to obtain a flat yarn having a width of 8 mm and a thickness of 170 μm, and this flat yarn was used in the same manner as in Example 4 to obtain a fabric. Then, the shorts of Comparative Example 2 were obtained, and the same evaluation as in Example 1 was performed.

[Comparative Example 3]
A 6 mm wide narrow knitted fabric knitted into a warp knitted fabric using covered elastic yarn covering spandex 155 dtex and nylon 44 dtex / 24 f as an elastic material is placed on the waist and crotch of the shorts, and the upper and lower surfaces of the narrow knitted fabric Was sandwiched between slit tapes obtained in the same manner as in Comparative Example 1 to form a three-layer structure, and the width of the three-layer structure of the fabric was folded back and bonded for 10 seconds at a pressure of 0.2 MPa and a temperature of 130 ° C. with a hot press. . Moreover, the joint part by the side of shorts was adhere | attached by the method similar to the comparative example 1, the shorts of the comparative example 3 was obtained, and evaluation similar to Example 1 was performed.

  Table 1 shows the results of 80% R / S, residual strain, wearing feeling, fit feeling, and waist thickness in each of the above Examples and Comparative Examples. From the results shown in Table 1, it can be seen that the garment of the present invention has a good feeling of wearing and a feeling of fitting, does not feel a slippage, and is comfortable without the edges and joints of the garment becoming thick.

  The garment of the present invention can make the edge and joint of the garment thinner, and can further improve the elasticity of the garment's edge and joint, such as innerwear, sportswear, and outerwear. It can be suitably applied to nightwear, nursing wear, and the like.

It is a figure explaining the elution start temperature in this invention. It is a schematic diagram of the SS curve of the elongation recovery property measurement in this invention.

Claims (4)

A garment having an adhesive portion obtained by melting and bonding a garment fabric with a thermoplastic polyurethane resin,
The bonding part is a part joining part for constituting a garment by joining a plurality of edge parts of clothing and / or cloth parts,
The garment wherein 80% R / S in the stretch recovery test of the bonded portion is 35% or more, and the residual strain of the bonded portion is 18% or less. The thermoplastic polyurethane resin is
(I) an organic polyisocyanate compound;
(Ii) A polyalkylene ether diol compound having a molecular weight of 300 to 30,000, the following structural unit (A):

And structural unit (B):

And / or structural unit (C):

And the following formula (1):
0.08 ≦ (M _B + M _C ) / (M _A + M _B + M _C ) ≦ 0.85 (1)
{In the formula, M _A , M _B and M _C are the number of moles of the structural units (A), (B) and (C) present in the polyalkylene ether diol compound, respectively. }
The garment according to claim 1, comprising a structure obtained by reacting with a material satisfying the above.   The garment according to claim 2, wherein the thermoplastic polyurethane resin further contains a structure derived from a chain extender composed of an active hydrogen-containing compound that reacts with an isocyanate group.   The garment according to claim 3, wherein the active hydrogen-containing compound that reacts with the isocyanate group is a diol.

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