JP2016074996A - clothing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a joining method which can be applied to a three-dimensional joining part without damaging a cloth piece, and clothing.SOLUTION: In a joining method of clothing configured by joining a plurality of cloth pieces 2 and 4 by an adhesive, an adhesive 30 having either resin with a softening temperature lower than a heat distortion temperature of thermal distortion elastic yarn or a chemical compound with a melting point lower than the heat distortion temperature of the thermal distortion elastic yarn as a main component is applied to a joining part of the cloth pieces 2 and 4 in which the thermal distortion elastic yarn is woven, and the cloth pieces are joined by performing heat processing at a temperature lower than the heat distortion temperature of the thermal distortion elastic yarn.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a clothing joining method constituted by joining a plurality of fabric pieces with an adhesive, and a clothing joined with an adhesive.

  Generally, clothing is configured to have a three-dimensional structure along the body by joining together a plurality of fabric pieces cut along a predetermined reference pattern. A sewing process using a sewing machine is employed to join such fabric pieces.

  However, the edge processing and joining processing of the fabric pieces adopting the sewing processing have caused a poor feeling of touching and the like because the sewing site becomes thick. Further, there has been a demand for a joining process that is simpler than the time-consuming sewing process and that can reduce the manufacturing cost.

  In Patent Document 1, the end of the front body and the end of the back body are overlapped for the purpose of providing a short that can be manufactured easily by finishing the joint part thinly and eliminating the sewing part. Shorts have been proposed in which the portion is bonded with a thermoplastic resin film, and a backing cloth is bonded to the crotch portion with a thermoplastic resin film. As the thermoplastic resin film, a hot-melt adhesive having elasticity such as thermoplastic polyurethane is used,

Utility Model Registration No. 3136098

  However, when a method of bonding fabric pieces using a thermoplastic resin film as described in Patent Document 1 is employed, the overlapping portion of the fabric pieces is placed on a press machine equipped with a flat base and applied at high pressure. Because it is necessary to heat at high temperature while pressing, even if it can be applied to bonding flat joints such as side parts and crotch parts, it is difficult to apply to three-dimensional joints such as armholes and heating. There is a problem in that there is a possibility that the dough piece may be damaged due to shine or hit.

  In addition, when using a fabric piece knitted with heat-deformed elastic yarn and unwound by heat setting or the like, the heat-deformed elastic yarn is affected by the heat applied at the time of joining the fabric pieces using a thermoplastic resin film. There was also a problem that damage was added to the structure, and the unblocking function was impaired, or the durability was impaired and cracks occurred along the course direction.

  Furthermore, if a film-like hot melt adhesive is used, the adhesive will infiltrate the fabric over the width corresponding to the film width, so even if there is elasticity, the elasticity and flexibility differ from other areas. There was also a problem that a sense of incongruity occurred.

  In view of the above-described problems, an object of the present invention is to provide a clothing joining method and clothing that can be applied to a three-dimensional joint without damaging a piece of fabric.

  In order to achieve the above-mentioned object, the garment joining method according to the present invention is characterized by a garment constructed by joining a plurality of fabric pieces with an adhesive as described in claim 1 of the claims. The bonding method of the fabric piece in which the heat-deformable elastic yarn is knitted is selected from polymers, prepolymers and oligomers having a softening temperature or melting temperature lower than the heat-deformation temperature of the heat-deformable elastic yarn. It is in the point which apply | coats the adhesive which has at least 1 type as a main component, and heat-processes at a temperature lower than the heat deformation temperature of the said heat deformation elastic yarn, and adhere | attaches.

  An adhesive mainly composed of at least one selected from a polymer, a prepolymer and an oligomer having a softening temperature or a melting temperature lower than the heat deformation temperature of the heat deformation elastic yarn is applied to the bonding portion of the fabric piece, If the fabric pieces to be bonded are superposed and heat-treated, the adhesive will soften or melt without thermal deformation of the heat-deformable elastic yarn in the process of bonding both fabric pieces, so it was knitted into the fabric pieces Both fabric pieces are bonded without the heat-deformed elastic yarn being damaged by the heat during the heat treatment. As a result, there is no damage to the fabric pieces during heating, such as shine or hitting, and the function of preventing unraveling is not impaired, and durability is not impaired and cracks are not generated along the course direction. It is possible to produce a garment having good comfort without being hindered.

  A first characteristic configuration of a garment according to the present invention is a garment in which a plurality of fabric pieces are joined at a joint portion and at least a part of the joint portion is joined with an adhesive as described in claim 2. The fabric piece joined with the adhesive is composed of a fabric piece knitted with a heat-deformable elastic yarn, and has a softening temperature or a melting temperature lower than the heat-deformation temperature of the heat-deformable elastic yarn, a prepolymer, and An adhesive having at least one selected from oligomers as a main component is applied to the piece of fabric and bonded by heat treatment.

  An adhesive mainly composed of at least one selected from polymers, prepolymers and oligomers having a softening temperature or melting temperature lower than the heat deformation temperature of the heat deformation elastic yarn is applied to the bonding portion of the fabric piece and heat-treated. Then, at least selected from polymers, prepolymers and oligomers having a softening temperature or melting temperature lower than the heat distortion temperature of the heat deformation elastic yarn without affecting the heat deformation elastic yarn knitted into the fabric piece by heat. The adhesive mainly composed of one kind melts and infiltrates between the fibers constituting the fabric, so that both fabrics are bonded. As a result, there is no damage to the fabric pieces during heating, such as shine or hitting, and the function of preventing unraveling is not impaired, and durability is not impaired and cracks are not generated along the course direction. Clothing that is comfortable to wear can be obtained.

  In the second characteristic configuration, in addition to the first characteristic configuration described above, the heat-deformable elastic yarn is polyurethane having a softening temperature of 140 ° C. to 185 ° C. The main component is at least one selected from polymers, prepolymers and oligomers containing urethane or olefin.

  Polyurethanes whose softening temperature of heat-deformable elastic yarn is lower than 140 ° C. tend to cause fineness variations during the production of the original yarn, whereas polyurethanes whose softening temperature is 140 ° C. or higher are stable with few fineness variations. Degradation can be avoided. If a polyurethane having a softening temperature of the heat-deformable elastic yarn of 185 ° C. or less is used, urethane can be heat-sealed without causing fabric burning or the like at the time of fabric production, so that a good release treatment can be realized.

  Polyurethane having a softening temperature of 140 ° C. to 185 ° C. is used as the heat-deformable elastic yarn, and when at least one selected from polymers, prepolymers and oligomers containing urethane or olefin as the main component of the adhesive is used, the affinity for polyurethane Excellent adhesion by heat treatment at a temperature lower than the softening temperature of polyurethane.

  In the third feature configuration, in addition to the first or second feature configuration described above, the adhesive has a 120 ° C. melt viscosity of 8000 mPa · s to 22000 mPa · s. It is in.

  If the 120 ° C melt viscosity of the adhesive is from 8000 mPa · s to 22000 mPa · s, the adhesive can infiltrate well between the fibers constituting the fabric without giving a large pressing force during heat treatment, and sufficient adhesive strength can be obtained. Be able to. As a result, the thermal deformation elastic yarn can be bonded satisfactorily without giving a thermal effect and without giving damage such as shine or hitting to the cloth piece.

  The fourth characteristic configuration is that, in addition to the third characteristic configuration described above, the adhesive has a 120 ° C. melt viscosity of 13,000 mPa · s to 19000 mPa · s in addition to the third characteristic configuration described above.

  In particular, the 120 ° C. melt viscosity of the adhesive is preferably 13000 mPa · s to 19000 mPa · s.

  In the fifth feature configuration, in addition to any one of the first to fourth feature configurations described above, the fabric pieces are joined in a ring shape using the adhesive. It is in.

  For film-like adhesives that are difficult to position and hold before heat treatment, it can be easily applied to even three-dimensional joints such as armholes as long as it is an adhesive that is applied to the fabric in advance. Since the application amount and the application pattern of the agent can be adjusted, it is possible to obtain a good touch without substantially changing the stretchability and flexibility of the fabric in the adhesion region from other regions.

  In the sixth feature, as described in claim 7, in addition to any of the first to fifth features described above, the adhesive is a reactive hot melt resin.

  The melted reactive hot-melt resin is applied to the bonding portion of the cloth, and the cloth to be bonded is positioned, overlapped and pressed lightly before proceeding to the crosslinking reaction, and a temporary fixing state is obtained. Thereafter, when the heat treatment is performed, the reactive hot melt resin is melted and infiltrated between fibers constituting the fabric, and the two fabrics are bonded. And if a crosslinking reaction advances after adhesion | attachment, since heat resistance will appear, it will not melt by subsequent heat processing, and a favorable adhesion state will be maintained.

  As described above, according to the present invention, it is possible to provide a garment joining method and a garment that can be applied to a three-dimensional joint without damaging the fabric piece.

(A) is explanatory drawing seen from the front front side of the undershirt which is an example of clothing by this invention, (b) is explanatory drawing seen from the back front side, (c) is explanatory drawing of a wearing condition Explanatory drawing at the time of cutting the fabric piece which comprises the clothing by this invention from a knitted fabric Explanatory drawing of the knitting | organization structure of the horizontal knitted fabric which comprises the body cloth of the clothing by this invention (A) is an explanatory diagram of a shoulder joint joining process, (b) is an explanatory diagram of a sleeve joint joining process, (c) is an explanatory diagram of an arm hole joining process, and (d) is an explanation of clothing that has been joined. Figure Illustration of heat treatment (A)-(d) is explanatory drawing of the aspect of an adhesion pattern, respectively Illustration of bonding part Table showing evaluation of heat-deformable elastic yarn, adhesive properties, heat treatment temperature (press temperature), adhesive strength, and quality of bonded part used in fabrics to be bonded in Examples 1 to 8 and Comparative Examples 1 to 4

DETAILED DESCRIPTION OF THE INVENTION A clothing joining method and clothing according to the present invention will be described below with reference to the drawings.
1 (a), (b), and (c) show an undershirt 1 that is an example of clothing according to the present invention in a front view, a back view, and a worn state. The undershirt 1 includes a front body 2, a back body 3, and left and right sleeves 4. The shoulder lines of the front and rear bodies 2, 3 are joined to each other at a shoulder joint 7, and Sleeve crests of the left and right sleeve portions 4 are joined to the arm holes AHf and AHb, respectively. In FIG. 1, each joint portion is indicated by a broken line.

  As shown in FIG. 2, the undershirt 1 is configured using a tubular fabric T knitted by a circular knitting machine. Specifically, a long tubular fabric T, such as a knitted knitted fabric, a milled knitted fabric or a smooth knitted fabric, is cut to a length that can ensure the required length L1, and the upper portion of the tubular body is armholes AHf, AHb, shoulders Cut at the portions that become the lines SLf and SLb and the neckline NHf and NHb, and the fabric piece constituting the sleeve portion 4 is cut from the cut piece. That is, the undershirt 1 is composed of a cylindrical body having no side joints.

  Next, as shown in FIG. 1 (c), the sleeve 40 is joined at the lower part so that the edge 40 of the sleeve 4 becomes a cylindrical shape to form a sleeve lower joint 41, and the shoulder lines SLf and SLb of the body cloth are connected to each other. Are joined to form the shoulder joint 7, the sleeve 4 is joined to the arm holes AHf and AHb to form the sleeve joint AH, and the round collar 5 is joined to the collars NHf and NHb.

  Adhesive processing using an adhesive is employed for joining the under-sleeve joint portion 41, shoulder joint portion 7 and sleeve joint portion AH, and sewing processing is employed for joining the neckline NHf, NHb and the round collar 5. .

  The undershirt 1 according to the present invention is not limited to an embodiment composed of a tubular body fabric using a horizontal knitted fabric, and the front body using a horizontal knitted fabric in which the left and right body parts 2, 3 are cut. The aspect comprised so that the stage 2 and the back body 3 might be joined by the right and left side parts, respectively. In that case, it is preferable that an adhesive treatment using an adhesive is also employed for the side joint processing. Further, the round collar 5 may be formed of the neckline NHf and NHb itself by a cutting-off process described later without sewing a special collar to the neckline NHf and NHb.

  Whichever fabric is used, it is preferable that the course direction of the horizontal knitted fabric is along the width of the body, and that the wale direction is along the length, and the course direction of the horizontal knitted fabric is around the sleeve of the sleeve 4. It is preferable to be used along.

  FIG. 3 shows a knitting structure of a horizontal knitted fabric (circular knitted fabric) used for the undershirt 1. In the horizontal knitted fabric 10, the heat-deformable elastic yarn 11 and the other yarn 12 are knitted by plating knitting, and the heat-deformable elastic yarn 11 that is thermally deformed by performing heat-set processing thereafter is the other yarn. 12 is formed of a knitted fabric that exhibits a release function when fused around each other.

  In this embodiment, a 22-44 dtex (decitex / filament) polyurethane elastic yarn is used as the heat-deformable elastic yarn 11, and the other yarn 12 is a single yarn fineness of 80/1 to 30/1 first cotton yarn or cotton and rayon. Are used. The number of filaments of the polyurethane elastic yarn 11 is not particularly limited, and may be a monofilament or a multifilament.

  The plating knitted fabric knitted by feeding the knitting needles from different yarn feeders has a stable arrangement of the low-melting point polyurethane elastic yarns 11 and cotton yarns 12 in each knitting loop. The polyurethane elastic yarn 11 can be adjacent to each other, and if the low-melting point polyurethane elastic yarn is melted by heat setting after knitting, the fraying prevention function is surely exhibited in all the loops of the knitted fabric.

  The weft knitted fabric 10 is knitted into a cylindrical seamless knitted fabric using a circular knitting machine, then set on a setting machine, heat set at 150 to 190 ° C., and after passing through a dyeing process as necessary, a setting machine again And a final heat setting is performed at a temperature of 100 to 120 ° C. under tension.

  As described above, natural fibers such as cotton yarn are preferably used as the other yarns 12 constituting the weft knitted fabric 10 together with the low-melting polyurethane elastic yarn 11, but other than natural fibers, such as cupra and viscose rayon are regenerated. Cellulose fibers, blended yarns with natural fibers, synthetic fibers such as polyester can also be used.

  If a knitted fabric subjected to such unwinding processing is adopted, the fibers will not be unwound from the cut end portion even without special unwinding processing such as piping processing. Such an end portion is referred to as an end portion that has been cut off, and even if washing is repeated, the appearance is not deteriorated such that the fibers can be released from the end portion that has been cut off.

  In addition to the piping process, for example, it is not necessary to have a tie-off process that folds and sews the end portion, so there is no discomfort due to deterioration of the touch due to the thickness of the end portion, etc. Can be provided.

  The undershirt 1 shown in FIGS. 1A to 1C and FIG. 2 includes shoulder lines SLf and SLb, neckline NHf and NHb, arm holes AHf and AHb, an edge 40 of the sleeve portion 4, a sleeve tip 44, and a hem. 6 is cut off.

  In addition to using a heat-fusible elastic yarn such as a low-melting point polyurethane elastic yarn as the heat-deformable elastic yarn, it is also possible to use a polyurethane urea elastic fiber. Due to heat treatment such as heat-set processing, compression deformation of the polyurethane urea elastic fibers occurs at the contact points between the polyurethane urea elastic fibers or between the polyurethane urea elastic fibers and the other yarn, and the polyurethane urea elastic fibers or between the polyurethane urea elastic fibers Since the yarns are fixed, the polyurethane urea elastic fibers and the partner yarns are not easily removed from the knitted fabric, and a knitted fabric in which curling and unwinding are suppressed can be obtained. That is, fibers other than the low-melting point polyurethane elastic yarn and the polyurethane urea elastic yarn can be used as long as they are heat-deformable elastic yarns having a characteristic of being melted or compressed and deformed by heat treatment. That is, the heat deformation temperature means a temperature at which heat deformation is performed in order to embody the function of preventing the release, such as a softening temperature of polyurethane and a compression deformation temperature of polyurethane urea.

  4A shows the joined state of the shoulder joint 7, FIG. 4B shows the joined state of the lower sleeve joint 41, and FIG. 4C shows the joined joint of the sleeve joint AH. The state is shown, and FIG. 4D shows the undershirt 1 after the joining process.

  As shown in FIG. 4A, the adhesive 30 is applied in a zigzag manner to a band-like region having a predetermined width along the front side edge of the shoulder line SLf of the front body 2, and the back side of the shoulder line SLb on the back body 3 side. The shoulder portion 7 is formed by overlapping the edge portion thereon. In addition, the adhesive 30 may be apply | coated to the front side edge part of shoulder line SLb of the back body 3 side, and the back side edge part of shoulder line SLf of the front body 2 may be superimposed on it.

  As shown in FIG. 4 (b), the adhesive 30 is applied in a zigzag manner to a band-like region having a predetermined width along the front side edge of the back body 3 side of the pair of end edges 40 of the sleeve 4. Then, the back side edge part of the edge 40 on the front body 2 side is overlapped thereon to form a sleeve lower joint part 41. As described above, an adhesive may be applied to one edge of the edge 40 and the other edge may be superimposed.

  As shown in FIG. 4 (c), the adhesive 30 is applied in a zigzag manner to a band-like region having a predetermined width along the front side edge portion of the armholes AHf and AHb formed in a ring shape by joining the shoulder joint portions 7. The back edge of the sleeve 45 of the sleeve 4 is superimposed on the sleeve 4 to form a sleeve joint AH. The adhesive 30 may be applied to a band-like region having a predetermined width along the front side edge of the sleeve 45 of the sleeve 4, and the back side edge of the arm holes AHf and AHb may be superimposed thereon.

  As shown in FIG. 4D, when the joining process using the adhesive is completed, the undershirt 1 in which the neckline NHf, NHb, the sleeve tip 44, and the skirt 6 are cut off is completed.

  As the adhesive, an adhesive mainly composed of at least one selected from a polymer, a prepolymer and an oligomer having a softening temperature or a melting temperature lower than the heat deformation temperature of the heat deformation elastic yarn knitted into the fabric piece is preferably used. The heat-melted adhesive is bonded by heat treatment at a temperature lower than the heat deformation temperature of the heat-deformable elastic yarn.

  Specifically, polyurethane having a heat deformation temperature in the range of 140 ° C. to 185 ° C. is used as the heat deformation elastic yarn, and at least one selected from polymers, prepolymers and oligomers containing urethane or olefin as a main component as an adhesive. A moisture curable reactive hot melt resin as a component is used.

As shown in FIG. 5, the liquid adhesive 30 heated to 120 ° C. is supplied and applied from a nozzle 52 provided with a gear pump 50 to a belt-like region of a cloth piece (for example, the sleeve 4), and then a bonding target is formed thereon. The dough piece (for example, the arm hole of the body 2) to be positioned is temporarily fixed and temporarily fixed. After the temporary fixing, for example, the overlapping portion of the dough pieces is sandwiched between the cylindrical body 54 and the heating roller 56, and the heating roller By rotating 56 and heat-treating the entire overlapping region at a temperature of about 70 ° C., the adhesive 30 melts and infiltrates the fibers constituting both fabric pieces. As the crosslinking reaction proceeds after bonding, heat resistance appears, and it does not melt in the subsequent heat treatment. The pressure during the heat treatment is preferably 150 to 300 gf / cm ² .

  When such an adhesive is applied to the bonding portion of the fabric piece and heat-treated, the adhesive softens or melts and infiltrates between the fibers constituting the fabric, thereby bonding the two fabrics. At this time, the heat-dissipating elastic deformation yarn knitted into the fabric piece is not affected by heat, and the detacking function is not deteriorated.

  The 120 ° C. melt viscosity of the adhesive is preferably 8000 mPa · s to 22000 mPa · s, and more preferably 13000 mPa · s to 19000 mPa · s.

  If the 120 ° C. melt viscosity of the adhesive is within these ranges, the adhesive infiltrates satisfactorily between the fibers constituting the fabric, that is, in the thickness direction and the surface direction of the fabric, even without applying a large pressing force during heat treatment. Adhesive strength can be obtained. Moreover, since the adhesive does not infiltrate the opposite surface of the fabric at that time, the appearance is not deteriorated. As a result, the thermal deformation elastic yarn can be bonded satisfactorily without giving a thermal effect and without giving damage such as shine or hitting to the cloth piece.

  As a suitable object to be joined using such an adhesive, there is a place where a piece of cloth such as an armhole needs to be joined in a ring shape. If the adhesive is pre-applied to the fabric, it can be applied easily even in a three-dimensional joint such as an armhole, and the amount and pattern of the adhesive can be adjusted. A good touch can be obtained with almost no change in stretchability and flexibility.

  6A to 6E illustrate a linear adhesive pattern that forms an adhesive layer. The adhesive 30 heated and melted in a linear manner continuously intersects the stretch direction 10d of the transverse knitted fabric 10 serving as the body fabric, that is, the straight line L along the course direction, with a predetermined repetition pitch Bp and a predetermined amplitude Ba. Alternatively, it is applied in the form of dots, and then bonded by being heat-treated in a superimposed manner with the body cloth on the other side.

  When attention is paid to the intersection of an arbitrary straight line L along the expansion / contraction direction 10d of the horizontal knitted fabric 10 and the linear adhesive pattern, the adhesive point B to which the adhesive is applied at a pitch twice the predetermined pitch Bp and the adjacent adhesive The non-adhesion regions NB between the points B are alternately arranged. That is, the bonding positions are distributed in a dot shape on an arbitrary straight line L along the expansion / contraction direction 10d.

  By maintaining such a relationship in a band-shaped region having a predetermined width, expansion and contraction is suppressed at an adhesion point B along an arbitrary straight line L along the expansion and contraction direction 10d of the horizontal knitted fabric 10, but most non-adhesion regions NB allows expansion and contraction, and both fabrics are firmly bonded while allowing expansion and contraction as a whole.

  The preferred width of the band-like region to which the adhesive is applied is 2 mm to 15 mm, and more preferably 4 mm to 10 mm.

  As the adhesive pattern, a zigzag pattern as shown in FIGS. 6A, 6B, 6C, a repetitive pattern of a curve such as a sine curve as shown in FIG. 6D, or FIG. An arbitrary pattern such as a rhombus repetitive pattern as shown in FIG. 5 can be adopted in which the bonding positions are distributed in a dotted pattern on an arbitrary straight line L along the expansion / contraction direction 10d. Further, as shown in FIG. 6F, an adhesive may be applied so as to be arranged in a dot shape of a predetermined size.

  The ratio of the area of the bonded portion to the area of the two overlapping portions, that is, the area determined by the product of the repetition pitch Bp and the amplitude Ba is preferably 40 to 80%, more preferably 50% to 70%. . Here, the repetitive pitch Bp and the amplitude Ba are values that are appropriately set based on the material properties to be bonded, the target bonding strength, and the like.

  7 shows the weft knitted fabric 10 to which the adhesive 30 is applied in a zigzag shape, and the lower part of FIG. A cross section of the AA line, that is, a cross section of the adhesive layer is shown.

  Adhesive 30 applied to the surface of the horizontal knitted fabric 10 is infiltrated in the thickness direction of both fabrics by heat treatment and solidified between the fibers, and the fabrics are intimately bonded without forming a layer of only the adhesive. A layer is formed.

  The example using a moisture-curable reactive hot melt resin mainly composed of at least one selected from polymers or prepolymers and oligomers containing urethane or olefin as an adhesive has been described. Any known adhesive can be used as long as it is an adhesive that can be bonded by a heat treatment lower than the heat distortion temperature of not only the moisture-curable reactive hot melt resin. For example, a thermoplastic resin can be used.

  That is, as a thermoplastic resin used for the adhesive, as long as the above heat treatment conditions are satisfied, for example, a polyurethane hot melt resin, a polyester hot melt resin, a polyamide hot melt resin, an EVA hot melt resin, a polyolefin Hot-melt resin, styrene-based elastomer resin, moisture-curable hot-melt resin, reactive hot-melt resin, and the like. Among these, moisture-curable hot melt resins are particularly preferable because they have high adhesive strength and can be bonded in a short time.

  In the embodiment described above, a short-sleeved round collar undershirt has been described as an example. However, the present invention can also be applied to a half-sleeved, third-sleeved, and long-sleeved undershirt, and the shape of the collar is a V-collar or U-collar. May be. In addition, when the front and rear bodies are cut at the left and right end portions and the left and right side portions need to be joined, the joining method using the adhesive according to the present invention can also be applied to the joining of the side portions.

  As mentioned above, although the clothing by this invention was demonstrated to the undershirt as an example, the clothing by this invention is not limited to an undershirt, It is applicable to underwear, such as a boxer underwear, a brief, shorts, a camisole, a tunic. In particular, the present invention can be preferably applied to underwear and clothing other than underwear, such as clothing with sleeves, in which a piece of fabric needs to be joined in a ring shape using an adhesive.

Hereinafter, the present invention will be described in detail based on examples.
In the following examples, each evaluation item of the softening point, adhesive strength, hit, shine, texture, and urethane deterioration of the polyurethane fiber was evaluated by the following methods. Note that the present invention is not limited to the fabric and adhesive shown in the examples.
[Measurement of softening point of polyurethane fiber]
The relaxation time T2 (spin-spin relaxation time) of a hard segment, an intermediate segment, and a soft segment of a polyurethane fiber used as a heat-deformable elastic yarn is measured using a pulse nuclear magnetic resonance (NMR) apparatus (manufactured by JEOL Ltd .: JNM-MU25). And measured. The measurement conditions are as follows.
Measurement method: Solid-Echo method Measurement condition: 90 ° Pulse width 2.0 μs
Pulse repetition time: 4s
Number of integrations: 8 times Measurement temperature: room temperature, 100 ° C, 120 ° C, 140 ° C, 150 ° C, 160 ° C, 170 ° C, 180 ° C, 190 ° C, 200 ° C
The free induction decay (FID) signal obtained by pulse NMR at each temperature was analyzed by three-component approximation, and relaxation times T2 of the hard component, intermediate component, and soft component of the polyurethane fiber were obtained. The molecular motion of the soft component of the polyurethane fiber is suppressed by the hydrogen bond of urethane. As the temperature rises, this hydrogen bond is broken, and the mobility of the molecular chain rapidly increases. Therefore, the T2 value of the soft component at each measurement temperature of each sample was graphed, tangents were obtained from curves before and after the change in mobility, and the intersection was taken as the softening point of the polyurethane fiber.

[Melt viscosity]
The melt viscosity was measured by measuring the viscosity of the adhesive at 120 ° C. according to the measurement method of “Cone / Plate Viscometer Method” of JIS K5600. Adhesive was put between the plate and the cone, the rotor was rotated, and the value when the reading was stable was adopted.

[Adhesive strength]
The measurement of the adhesive strength was performed according to the measuring method of “peel strength” of JIS L1086.
Five or more test pieces (25 mm in width × 150 mm in length) are collected from the cloth to be bonded prepared in each example and comparative example in the wale direction and the course direction, respectively, and about 50 mm is peeled from the side in the long side direction. Using a tensile tester with a self-recording device, the interval between the test pieces was set to 50 mm, and the sample was sandwiched between clamps.

  The tensile speed was 100 mm / min, and 50 mm was peeled off. Take 3 from the largest value shown when peeling, and 3 from the smallest value, and calculate the average value of 6 items, rounding the average value 5 times or more each in the wale and course directions. Asked.

[Win]
Using the adherend cloth created in each example and comparative example as a sample, it was confirmed whether or not the adhesion site was different from the non-adhesion site. The appearance was evaluated in two stages according to the following indicators. “Hit” refers to the deterioration of the appearance quality caused by the change in the light reflection characteristics caused by the fluff of the fabric surface caused by the heat treatment, and the fall of the fluff is recovered by applying moisture to the fabric.
None: Same appearance: Different appearance

[Tekari]
The bonded fabric prepared in each example and comparative example was used as a sample, and the bonded site was observed. The fiber was plastically deformed, and the appearance quality was observed. The appearance quality was evaluated in two stages using the following indices. “Leverage” refers to deterioration of appearance quality due to plastic deformation of fibers that occurs during heat treatment, and does not recover even when moisture is applied.
None: Appearance quality is good: Appearance quality is poor

[Texture]
The fabric to be bonded prepared in each example and comparative example was used as a sample, and the texture was evaluated in three stages using the following indices.
○: Soft without core △: Hard ×: Hard with core

[Urethane degradation]
Using the adherend cloths prepared in each of the examples and comparative examples as sample pieces, each sample piece is gripped and attached to a dematcher test machine at an interval of 5 cm, and the test piece is 5000 times in the weft direction at an elongation rate of 2.5 times (150%). Stretching was repeated, and then the periphery of the adhesion site was observed, and urethane degradation was evaluated in two stages using the following indices.
None: No part of the polyurethane thread is observed, or no part of the polyurethane thread is observed, and no cracks are observed due to repeated use. Yes: Part of the polyurethane thread is observed, or part of the polyurethane thread is broken. Is not observed, but cracking due to repeated use is observed

Example 1
<Use fabric>
A cotton / rayon blend yarn (cotton: 50%, rayon: 50%) 60/1 was used as the front yarn, and a polyurethane yarn of 22 dtex and a softening point of 140 ° C. was used as the back yarn. Using a milling knitting machine, feed the above blended yarn and polyurethane yarn from the yarn feeder to the knitting needles to knitting the plating knitted fabric, then knitting all needles with dial needles and cylinder needles, and 1x1 rubber knitted fabric Organized. Set the knitted rubber knitted fabric on a setting machine, heat set at 170 ° C, set it on the setting machine again, perform final heat setting at a temperature of 120 ° C with tension applied, and stop A processed knitted fabric was obtained. This knitted fabric was cut (width 200 mm × length 150 mm) to obtain a fabric of Example 1.

<adhesive>
As the adhesive, a polyurethane-based moisture-curable reactive hot melt adhesive was used. The melt viscosity at 120 ° C. of the used polyurethane adhesive was 7930 (mPa · s).

<Adhesive bonding process>
After apply | coating the said adhesive agent to the strip | belt-shaped area | region of the said Example 1, the fabric piece used as joining object on it was temporarily fixed | superposed by superimposing. After temporarily fixing, the overlapping portion of both fabric pieces is heat-treated by rotating the heating roller at a temperature of about 75 ° C. and a pressure of 250 gf / cm ² , and bonded and bonded. Made cloth.

(Example 2)
The same fabric as in Example 1 was used except that a polyurethane-based moisture-curable reactive hot-melt adhesive having a melt viscosity of 21500 (mPa · s) at 120 ° C. was used as the adhesive and heat-treated at 100 ° C. Then, the bonded fabric of Example 2 was created.

(Example 3)
A fabric to be bonded of Example 3 was prepared by bonding and bonding using a fabric knitted in the same manner as in Example 1 except that a polyurethane yarn having 22 dtex and a softening point of 185 ° C. was used as the heat-deformable elastic yarn.

Example 4
Polyurethane yarn with 22 dtex and a softening point of 185 ° C. is used as the heat-deformable elastic yarn, and polyurethane-based moisture-curable reactive hot-melt adhesive with a melt viscosity at 120 ° C. of 21500 (mPa · s) is used as the adhesive. The fabric to be bonded of Example 4 was prepared by adhesive bonding using a fabric knitted in the same manner as in Example 1 except that the heat treatment was performed at 100 ° C.

(Example 5)
Knitting in the same manner as in Example 1 except that a polyurethane-based moisture-curing reactive hot melt adhesive having a melt viscosity of 13600 (mPa · s) at 120 ° C. was used as the adhesive and heat-treated at 80 ° C. The fabric to be bonded was bonded using the fabric thus prepared, and the bonded fabric of Example 5 was created.

(Example 6)
Knitting in the same manner as in Example 1 except that a polyurethane-based moisture-curable reactive hot melt adhesive having a melt viscosity of 19300 (mPa · s) at 120 ° C. was used as the adhesive and heat-treated at 90 ° C. The cloth to be bonded was bonded using the fabric thus prepared, and the bonded fabric of Example 6 was created.

(Example 7)
Polyurethane yarn having a 22 dtex and a softening point of 185 ° C. is used as the heat-deformable elastic yarn, and a polyurethane moisture-curable reactive hot melt adhesive having a melt viscosity of 13600 (mPa · s) at 120 ° C. is used as the adhesive. Except for heat treatment at 80 ° C., the fabric knitted in the same manner as in Example 1 was adhesively bonded to prepare an adherend fabric of Example 7.

(Example 8)
Polyurethane yarn having 22 dtex and a softening point of 185 ° C. is used as the heat-deformable elastic yarn, and polyurethane-based moisture-curing reactive hot melt adhesive having a melt viscosity at 120 ° C. of 19300 (mPa · s) is used as the adhesive. The fabric to be bonded of Example 8 was prepared by adhesive bonding using a fabric knitted in the same manner as in Example 1 except that the heat treatment was performed at 90 ° C.

(Comparative Example 1)
Polyurethane yarn with 22 dtex and a softening point of 120 ° C. is used as the heat-deformable elastic yarn, and polyurethane-based moisture-curable reactive hot-melt adhesive with a melt viscosity of 6820 (mPa · s) at 120 ° C. is used as the adhesive. The fabric to be bonded of Comparative Example 1 was prepared by adhesive bonding using a fabric knitted in the same manner as in Example 1 except that the heat treatment was performed at 60 ° C.

(Comparative Example 2)
Polyurethane yarn with 22 dtex and a softening point of 120 ° C. is used as the heat-deformable elastic yarn, and polyurethane-based moisture-curing reactive hot melt adhesive with a melt viscosity at 120 ° C. of 24200 (mPa · s) is used as the adhesive. A fabric to be bonded of Comparative Example 2 was prepared by adhesive bonding using a fabric knitted in the same manner as in Example 1 except that the heat treatment was performed at 140 ° C.

(Comparative Example 3)
Polyurethane yarn with 22 dtex and a softening point of 160 ° C. is used as the heat-deformable elastic yarn, and polyurethane-based moisture-curable reactive hot-melt adhesive with a melt viscosity at 120 ° C. of 23200 (mPa · s) is used as the adhesive. A fabric to be bonded of Comparative Example 3 was prepared by adhesive bonding using a fabric knitted in the same manner as in Example 1 except that the heat treatment was performed at 140 ° C.

(Comparative Example 4)
Polyurethane yarn with 22 dtex and a softening point of 185 ° C. is used as the heat-deformable elastic yarn, and polyurethane-based moisture-curable reactive hot melt adhesive with a melt viscosity of 6820 (mPa · s) at 120 ° C. is used as the adhesive. A fabric to be bonded of Comparative Example 3 was prepared by adhesive bonding using a fabric knitted in the same manner as in Example 1 except that the heat treatment was performed at 60 ° C.

  FIG. 8 shows the heat-deformable elastic yarns used for the bonded fabrics of Examples 1 to 8 and Comparative Examples 1 to 4, adhesive properties, heat treatment temperature (press temperature), adhesive strength, and quality of the bonded portion. Evaluation of is shown. In addition, the application pattern of the adhesive agent for each example and comparative example is the same. Specifically, the reactive hot melt adhesive is applied in a zigzag shape with a width of 6.0 mm and a pitch of 3.0 mm.

  From FIG. 8, the bonded fabric of Example 1 in which the softening temperature of the heat-deformable elastic yarn is 140 ° C. has a higher adhesive strength than the bonded fabric of Comparative Example 1 in which the softening temperature of the heat-deformed elastic yarn is 120 ° C. It turns out that it is excellent. In addition, when a heat-deformed elastic yarn having a softening temperature of 195 ° C. was used, it was not included in the comparative example because it had no cutting performance. From these results, it was found that if the heat-deformable elastic yarn is in the softening temperature range of 140 ° C. to 185 ° C., good bonding by heat treatment is possible without damaging the fabric piece.

  From FIG. 8, it can be seen that when the melt viscosity at 120 ° C. is from 8000 mPa · s to 22000 mPa · s, the adhesive infiltrates well between the fibers constituting the fabric and sufficient adhesive strength is obtained. In addition, it was found that a good adhesive was obtained without thermally affecting the heat-deformed elastic yarn or damaging the cloth pieces such as shine or hit.

  It was found that when a polyurethane yarn having a softening temperature of 140 ° C. to 185 ° C. was used as the heat deformation elastic yarn of Experiment Nos. 1 to 8 (Examples 1 to 8), a good adhesive was obtained. In addition, when an adhesive of Experiment Nos. 1 to 8 (Examples 1 to 8) having a melt viscosity of 120 ° C. from 8000 mPa · s to 22000 mPa · s is used, a good adhesive is obtained, and the melt viscosity of 120 ° C. is 8000 mPa · s. -It turned out that a further favorable adhesive substance is obtained when the adhesive of the experiment numbers 5-8 (Examples 1-4) which are 22000 mPa * s from s is used.

  The clothing according to the present invention includes clothing such as an undershirt that can be applied to a three-dimensional joint portion such as a sleeve portion without damaging a piece of fabric knitted with a heat-deformable elastic yarn that has been released. The present invention is utilized as a method for joining various garments, and as a garment joined by the joining method, as a comfortable garment excellent in touch.

1: Clothing (undershirt)
2: Front body 3: Rear body 4: Sleeve part 5: Round collar 6: Hem 7: Shoulder joint part 10: Horizontal knitted fabric (body cloth)
30: Adhesive 41: Sleeve bottom joint AH: Sleeve joint

Claims (7)

A method for joining clothing comprising joining a plurality of fabric pieces with an adhesive,
A main component is at least one selected from a polymer, a prepolymer, and an oligomer having a softening temperature or a melting temperature lower than the heat deformation temperature of the heat deformable elastic yarn in an adhesive portion of the fabric piece knitted with the heat deformable elastic yarn. A method for joining clothing, characterized in that an adhesive is applied and heat treatment is performed at a temperature lower than the heat deformation temperature of the heat-deformable elastic yarn. A plurality of fabric pieces are joined at a joint, and at least a part of the joint is joined with an adhesive,
The fabric piece to be joined with the adhesive is composed of a fabric piece knitted with heat-deformed elastic yarn,
An adhesive mainly composed of at least one selected from a polymer, a prepolymer and an oligomer having a softening temperature or a melting temperature lower than the heat deformation temperature of the heat deformation elastic yarn is applied to the fabric piece and bonded by heat treatment. ing,
Clothing characterized by that. The heat-deformable elastic yarn is a polyurethane having a softening temperature of 140 ° C. to 185 ° C .;
The main component of the adhesive is at least one selected from polymers containing urethane or olefin, prepolymers and oligomers,
The garment according to claim 2.   The garment according to claim 2 or 3, wherein the adhesive has a 120 ° C melt viscosity of 8000 mPa · s to 22000 mPa · s.   The garment according to claim 4, wherein the adhesive has a 120 ° C. melt viscosity of 13,000 mPa · s to 19000 mPa · s.   6. The garment according to claim 2, wherein the cloth pieces are joined in a ring shape using the adhesive.   The clothing according to any one of claims 2 to 6, wherein the adhesive is a reactive hot melt resin.