EP2039826A1 - Dentelle tricotée et son procédé de production - Google Patents

Dentelle tricotée et son procédé de production Download PDF

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Publication number
EP2039826A1
EP2039826A1 EP07806533A EP07806533A EP2039826A1 EP 2039826 A1 EP2039826 A1 EP 2039826A1 EP 07806533 A EP07806533 A EP 07806533A EP 07806533 A EP07806533 A EP 07806533A EP 2039826 A1 EP2039826 A1 EP 2039826A1
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EP
European Patent Office
Prior art keywords
yarn
thermal bonding
loop
knitted
shaped portion
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP07806533A
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German (de)
English (en)
Other versions
EP2039826B1 (fr
EP2039826A4 (fr
Inventor
Shigeo Yoshita
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yoshita Tex Co Ltd
Original Assignee
Kuroda Tex Co Ltd
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Filing date
Publication date
Application filed by Kuroda Tex Co Ltd filed Critical Kuroda Tex Co Ltd
Publication of EP2039826A1 publication Critical patent/EP2039826A1/fr
Publication of EP2039826A4 publication Critical patent/EP2039826A4/fr
Application granted granted Critical
Publication of EP2039826B1 publication Critical patent/EP2039826B1/fr
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    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B31/00—Crocheting processes for the production of fabrics or articles
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B21/00—Warp knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
    • D04B21/14—Fabrics characterised by the incorporation by knitting, in one or more thread, fleece, or fabric layers, of reinforcing, binding, or decorative threads; Fabrics incorporating small auxiliary elements, e.g. for decorative purposes
    • D04B21/16—Fabrics characterised by the incorporation by knitting, in one or more thread, fleece, or fabric layers, of reinforcing, binding, or decorative threads; Fabrics incorporating small auxiliary elements, e.g. for decorative purposes incorporating synthetic threads
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B21/00—Warp knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
    • D04B21/10—Open-work fabrics
    • D04B21/12—Open-work fabrics characterised by thread material
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06H—MARKING, INSPECTING, SEAMING OR SEVERING TEXTILE MATERIALS
    • D06H7/00—Apparatus or processes for cutting, or otherwise severing, specially adapted for the cutting, or otherwise severing, of textile materials
    • D06H7/16—Apparatus or processes for cutting, or otherwise severing, specially adapted for the cutting, or otherwise severing, of textile materials specially adapted for cutting lace or embroidery
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2401/00—Physical properties
    • D10B2401/04—Heat-responsive characteristics
    • D10B2401/041—Heat-responsive characteristics thermoplastic; thermosetting

Definitions

  • the present invention relates to a knitted lace manufacturing method and a knitted lace manufactured by the manufacturing method.
  • a thermal bonding yarn which is thermally soluble is knitted into a scallop portion.
  • the thermal bonding yarn is molten.
  • the thermal bonding yarn bonds an overlapping portion between a base portion of a picot yarn and another yarn and a portion in which the thermal bonding yarn is exposed other than the overlapping portion is dissolved and removed. Thereby fray can be prevented from being generated in the scallop portion of the knitted lace.
  • a covering yarn is knitted into a scallop portion.
  • the covering yarn is constituted by a core yarn having a heat solubility and a covering yarn to be a thermoplastic synthetic fiber yarn.
  • a thermal bonding yarn is knitted into only the scallop portion.
  • the fray is still generated easily in portions other than the scallop portion.
  • the thermal bonding yarn may get dissociated from residual yarns. In this case, a bond of a plurality of yarns by the thermal bonding yarn is broken, and fray may be generated from a dissociated portion.
  • an object of the invention is to provide a knitted lace in which a yarn is prevented from fraying, and a manufacturing method thereof.
  • the invention provides a method of manufacturing a knitted lace comprising:
  • a knitted lace fabric is heated to a temperature which is lower than a melting temperature of a chain stitch yarn and is equal to or higher than a melting temperature of a thermal bonding yarn so that a part of the thermal bonding yarn is partially dissolved. A part of the dissolved portion sticks to the chain stitch yarn.
  • the chain stitch yarn coming in contact with the thermal bonding yarn can be prevented from being isolated from the thermal bonding yarn in a knitted lace manufactured by using the knitted lace fabric.
  • the respective yarns coming in contact with the thermal bonding yarn can be bonded to each other through the thermal bonding yarn. Consequently, a coupling state of the respective yarns can be maintained so that fray of the yarns can be prevented.
  • a tension is applied to a knitted fabric containing a thermal bonding yarn.
  • an amount of extension of the knitted fabric exceeds an extension limit of the thermal bonding yarn so that the thermal bonding yarn is divided into a plurality of portions.
  • the thermal bonding yarn subjected to melting which sticks to a chain stitch yarn is divided into a plurality of portions so that a fused portion in which the thermal bonding yarn is disposed at an interval is formed on the chain stitch yarn.
  • the fused portion sticking to the chain stitch yarn acts as a resisting member against the fray of the chain stitch yarn. For example, the fused portion penetrates through the loop-shaped portion of the chain stitch yarn so that a further fray of the chain stitch yarn can be prevented.
  • the invention it is possible to prevent fray of respective yarns in a knitted lace manufactured by heating a knitted lace fabric.
  • a manufacturing process such as sewing or cutting of the knitted lace
  • the fray of the yarn caused by a using state such as wearing or washing.
  • the chain stitch structure is achieved with yarns other than the thermal bonding yarn, so that by using a yarn having a heat resistance as a chain stitch yarn, it is possible to stabilize a configuration of the whole knitted lace.
  • a knitting condition at the knitted fabric knitting step and a heating condition at the heating step are set so that an extension limiting amount ⁇ 1 of the whole knitted fabric excluding the thermal bonding yarn subjected to the heating step is larger than an extension limiting amount ⁇ 2 of the thermal bonding yarn subjected to the heating step.
  • a knitting condition at a knitted fabric knitting step and a heating condition at a heating step are set so that an amount of extending and contracting limit of the whole knitted fabric subjected to the heating step is larger than an amount of extending limit of the thermal bonding yarn subjected to the heating step.
  • a stretch yarn is knitted or a chain stitch yarn itself is caused to be elastic so that an elastic knitted fabric is manufactured.
  • the heating step and the breaking step are carried out at the same time.
  • the heating step and the breaking step are carried out at the same time. Consequently, the heating step and the breaking step can be carried out at one time so that a manufacturing period can be shortened.
  • the heating step and the breaking step can be carried out at the same time. In this case, by simply carrying out the thermal setting step, it is possible to implement the melting of the thermal bonding yarn and the breakage of the bonding yarn into a plurality of portions in one step.
  • the heating condition at the heating step is set to melt the thermal bonding yarn and to prevent yarns other than the thermal bonding yarn which are contained in the knitted fabric, from being fragile.
  • the thermal bonding yarn is molten on a heating condition that the yarns other than the thermal bonding yarn are prevented from being fragile. Consequently, it is possible to prevent fray and to suppress reduction in strength of the knitted fabric.
  • the heating condition at the heating step is set to divide the thermal bonding yarn through melting.
  • the thermal bonding yarn is divided at the breaking step and the heating condition is properly set so that the thermal bonding yarn is divided also at the heating step. Consequently, it is possible to increase an amount of division of the thermal bonding yarn and to form the fused portion serving as a resisting member against the fray of the chain stitch yarn more reliably, and to prevent the fray of the chain stitch yarn further reliably.
  • a polyester-based thermoplastic polyurethane elastic yarn of 10 deniers to 300 deniers is used as the thermal bonding yarn and is heated at a heating temperature of 170°C to 195°C for 30 sec to 90 sec at the knitted fabric knitting step.
  • a polyester based thermoplastic polyurethane elastic yarn of 10 deniers to 300 deniers is used as the thermal bonding yarn and is heated at 170°C to 195°C for 30 sec to 90 sec so that yarns other than the thermal bonding yarn which are contained in the knitted fabric can be prevented from being fragile and it is possible to divide the thermal bonding yarn by sufficiently melting the thermal bonding yarn.
  • an inserting yarn other than the thermal bonding yarn is knitted at the knitted fabric knitting step, and in the chain stitch portion, a first loop-shaped portion and a second loop-shaped portion are alternately connected and arranged in a plurality of stages in a course direction; the second loop-shaped portion is inserted through the first loop-shaped portion in an earlier stage in the course direction of the second loop-shaped portion and is extended toward a later stage in the course direction, and the second loop-shaped port ion is inserted through the first loop-shaped portion in the same stage in the course direction of the second loop-shaped portion and is connected to the first loop-shaped portion in the later stage in the course direction, whereby the second loop-shaped portion is formed like a chain and is extended in the course direction in the chain stitch portion; and directions of insertion of the thermal bonding yarn and the other inserting yarn between the first loop-shaped portion and the second loop-shaped portion are set to be different from each other in a portion in which both the thermal bonding yarn and the other insert
  • the inserting yarns other than the thermal bonding yarn may be a pattern yarn or a jacquard yarn for forming a pattern on a knitted lace and a stretch yarn for causing the knitted lace to be elastic.
  • an elastic stretch yarn is knitted in addition to the thermal bonding yarn in an extending state; a first loop-shaped portion and a second loop-shaped portion are alternately connected and arranged in a plurality of stages in a course direction; the second loop-shaped portion of interest is inserted through the first loop-shaped portion in an earlier stage in the course direction of the second loop-shaped portion and is extended toward a later stage in the course direction, and is inserted through the first loop-shaped portion in the same stage in the course direction of the second loop-shaped portion and is connected to the first loop-shaped portion in the later stage in the course direction, whereby the second loop-shaped portion is formed like a chain and is extended in the course direction in the chain stitch portion; and directions of insertion of the thermal bonding yarn and the stretch yarn between the first loop-shaped portion and the second loop-shaped portion are set to be different from each other in a portion in which both the thermal bonding yarn and the stretch yarn are knitted.
  • directions in which the thermal bonding yarn and the stretch yarn are inserted between the first loop-shaped portion and the second loop-shaped portion are different from each other in the portion in which both the thermal bonding yarn and the stretch yarn are knitted. Consequently, it is possible to lessen the amount of contact of the stretch yarn and the thermal bonding yarn, to easily cause the molten thermal bonding yarn to stick to the chain stitch yarn and to readily form a fused portion in the chain stitch yarn.
  • the thermal bonding yarn has a higher dissociation to the chain stitch yarn than the stretch yarn
  • the thermal bonding yarn is dissociated from the chain stitch yarn more easily when the thermal bonding yarn sticks to both the stretch yarn and the chain stitch yarn.
  • the invention provides a knitted lace manufactured by the method mentioned above.
  • the knitted lace fabric is heated so that a part of the thermal bonding yarn contained in the knitted lace fabric is molten and binding of each yarn can be strengthened. Accordingly, it is possible to prevent the fray of the knitted lace formed by using the knitted lace fabric. By breaking the thermal bonding yarn to form the fused portion, furthermore, it is possible to further prevent the fray.
  • Fig. 1 is a view showing a knitting structure, illustrating a part of a knitted lace fabric 120 according to a first embodiment of the invention.
  • Fig. 2 is a view showing a knitting structure, illustrating a part of a first precursor knitted fabric 20 to be a precursor of the knitted lace fabric 120.
  • Fig. 3 is a view showing a knitting structure, illustrating the first precursor knitted fabric 20 in which yarns other than a chain stitch yarn 21 and a thermal bonding yarn 23 are omitted.
  • Figs. 1 to 3 are views showing a knitting structure, schematically illustrated for easy understanding.
  • first precursor knitted fabric 20 In actual knitting structures of the knitted lace fabric 120 and the first precursor knitted fabric 20,radii of curvature of a first loop-shaped portion 24 and a second loop-shaped portion 25 are small and yarns 21, 22 and 23 are very close to each other or in contact with each other.
  • a knitted fabric formed with each of the yarns 21, 22, and 23 is referred to as the first precursor knitted fabric 20.
  • a second precursor knitted fabric what is formed by heating the first precursor knitted fabric 20 is referred to as a second precursor knitted fabric.
  • a knitted fabric formed by breaking the thermal bonding yarn 23 included in the second precursor knitted fabric into a plurality thereof is referred to as a knitted lace fabric 120, and a product manufactured by use of the knitted lace fabric 120 is referred to as a knitted lace.
  • the first precursor knitted fabric 20 becomes a warp knitted fabric knitted with knitting yarns.
  • a plurality of through holes are formed, and a lace pattern is formed by a shape and arrangement of the through holes.
  • a lace pattern is formed by a shape and arrangement of the through holes.
  • a knitted lace fabric having such a pattern is used for underwear for women, for example.
  • the first precursor knitted fabric 20 is constituted by including the chain stitch yarn 21, the thermal bonding yarn 23 and the inserting yarn 22.
  • the chain stitch yarn 21 is referred to as a warp or a ground knitting yarn in some cases.
  • the inserting yarn 22 is referred to as a weft in some cases.
  • the thermal bonding yarn 23 has a lower melting temperature than the other yarn to be used as the first precursor knitted fabric 20 and has a thermoplasticity.
  • Fig. 4 is a flowchart showing a process for manufacturing the knitted lace fabric 120 according to the embodiment.
  • a preparation for a knitted fabric formation that is, a selection of each knitting yarn to be used for a knitted lace, a determination of a pattern to be formed on the knitted lace and a design of a knitted fabric for forming a desirable knitting structure are completed at Step a0, the processing proceeds to Step a1 in which the knitted lace fabric 120 is started to be manufactured.
  • the knitting machine knits the respective yarns 21 and 22 such as the thermal bonding yarn 23 into the chain stitch yarn 21, thereby knitting the first precursor knitted fabric 20 shown in Fig. 2 in accordance with a knitting order designed at the Step a0.
  • the first precursor knitted fabric 20 forms a chain stitch structure in which a plurality of loop-shaped portions are formed by the chain stitch yarn 21, and furthermore, the thermal bonding yarn 23 is knitted into the chain stitch structure.
  • At least one of the yarns provided in the first precursor knitted fabric 20 is elastic. More specifically, at least one of the chain stitch yarn 21, the thermal bonding yarn 23 and the other yarns is elastic.
  • the knitting machine executes a knitting operation in a state in which the elastic yarn is extended.
  • the first precursor knitted fabric 20 shrinks after knitting by a restoring force of the yarn knitted in the extending state and becomes elastic.
  • the processing proceeds to Step a2.
  • Step a2 there is carried out a heating step of heating the first precursor knitted fabric 20 formed at the Step a1 to a temperature which is equal to or lower than a melting temperature of the chain stitch yarn 21 and is equal or higher than that of the thermal bonding yarn 23. Consequently, there is formed a second precursor knitted fabric in which a part of the thermal bonding yarn 23 is partially dissolved. A part of the dissolved portion of the second precursor knitted fabric sticks to the chain stitch yarn 21 and the inserting yarn 22. In this state, the thermal bonding yarn 23 is caked. Consequently, the chain stitch yarn 21 and the inserting yarn 22 which are provided in contact with the thermal bonding yarn 23 can be prevented from being released from the thermal bonding yarn 23.
  • Step a3 there is carried out a breaking step of applying a tension to extend the second precursor knitted fabric formed at the Step a2 and breaking the thermal bonding yarn 23 subjected to the melting into a plurality of portions.
  • an amount of extension ⁇ 3 of the second precursor knitted fabric exceeds an amount of extension ⁇ 1 of the thermal bonding yarn 23 so that the thermal bonding yarn 23 is divided into a plurality of portions.
  • the knitted lace fabric 120 thus formed is refined and a heat treatment which is also referred to as a final heat set is then carried out to fix a configuration, and the knitted lace fabric is used to manufacture a lace product after the Step a3.
  • a heat treatment which is also referred to as a final heat set is then carried out to fix a configuration
  • the knitted lace fabric is used to manufacture a lace product after the Step a3.
  • the manufacture of the knitted lace fabric 120 is ended.
  • the knitted lace fabric 120 is formed by dividing the thermal bonding yarn 23 molten and bonded to the respective yarns as compared with the first precursor knitted fabric 20 obtained immediately after the knitted fabric is completely formed.
  • the thermal bonding yarn 23 of the knitted lace fabric 120 is intermittently positioned in a course direction C.
  • the thermal bonding yarn 23 which is divided constitutes a plurality of fused portions 100 disposed at an interval in the course direction C, respectively.
  • Each of the fused portions 100 sticks to the yarns 21 and 22 other than the thermal bonding yarn 23 at an interval, respectively.
  • Each of the fused portions 100 is displaced with the sticking yarn irrespective of the other fused portions 100.
  • the fused portion 100 sticks to a yarn other than the thermal bonding yarn 23 in some cases and sticks to a plurality of yarns other than the thermal bonding yarn 23 in the other cases.
  • one of the fused portions 100 sticks to couple the chain stitch yarn 21 and the inserting yarn 22 in some cases.
  • one of the fused portions 100 sticks to couple two of the chain stitch yarns 21 in some cases.
  • Portions of the yarns 21 and 22 other than the thermal bonding yarn 23 to which the fused portion 100 sticks form a portion which is protruded from a surface of an exposed portion in which the fused portion 100 is not present.
  • the yarns 21 and 22 to which the thermal bonding yarn 23 sticks are provided with convex portions which are caused by the sticking of the fused portion 100. Consequently, the fused portion 100 sticking to the respective yarns 21 and 22 acts as a resisting member against fray of the respective yarns 21 and 22.
  • Figs. 5A and 5B are views for explaining that the fused portion 100 acts as the resisting member against the fray.
  • Fig. 5A shows a state in which a breakage is generated in a broken portion 21A of the chain stitch yarn 21.
  • Fig. 5B shows a state in which the chain stitch yarn 21 is pulled from the broken portion 21A.
  • the fused portion 100 is caught on the first loop-shaped portion 24 so that a resistance to the drawing operation for the chain stitch yarn 21 is generated and the chain stitch yarn 21 can be prevented from being further drawn. Consequently, it is possible to hinder the progress of the fray of the chain stitch yarn 21, thereby preventing the fray of the chain stitch yarn 21.
  • Fig. 5B shows a space 102 of the first loop-shaped portion 24 having such a shape that the fused portion 100 can pass for easy understanding.
  • the actual space 102 of the first loop-shaped portion 24 is formed to be sufficiently smaller than the fused portion 100. Accordingly, it is possible to achieve an advantage that it is possible to prevent the fray from being caused by the catch-on of the fused portion 100.
  • Figs. 6A and 6B are views for explaining that the fused portion 100 to be a protruded molten sticking substance acts as the resisting member against the fray.
  • Fig. 6A shows a state in which the breakage is generated in another broken portion 21B of the chain stitch yarn 21.
  • Fig. 6B shows a state in which the chain stitch yarn 21 is pulled from the other broken portion 21B.
  • the inserting yarn 22 is caught on the first loop-shaped portion 24 so that a resistance to the drawing operation for the chain stitch yarn 21 is generated and the chain stitch yarn 21 can be prevented from being further drawn. Consequently, it is possible to hinder the progress of the fray of the chain stitch yarn 21, thereby preventing the fray of the chain stitch yarn 21.
  • Fig. 6B shows a state in which a part of the inserting yarn 22 passes through the space 102 of the first loop-shaped portion 24.
  • a part of a short fiber (a monofilament) constituting the inserting yarn 22 is drawn and a residual short fiber is not drawn but the inserting yarn 22 is caught thereon. Also in this case, it is possible to sufficiently achieve an advantage that the fray can be prevented from being caused by the catch-on of the inserting yarn 22.
  • the fused portion 100 acts as a resisting member against the fray in the same manner as in the cases shown in Figs. 5A and 5B when the fused portion 100 sticks to the chain stitch yarn 21.
  • the fused portion 100 acts as a resisting member against the fray in the same manner as in the cases shown in Figs. 5A and 5B when the fused portion 100 sticks to the chain stitch yarn 21.
  • the thermal bonding yarn 23 sticking to the chain stitch yarn 21 is positively divided to break an original shape of the thermal bonding yarn 23 at the breaking step. Consequently, the fused portion 100 having the thermal bonding yarn 23 disposed at an interval sticks to the chain stitch yarn 21.
  • the shape of the bonding yarn 23 is changed to form a concavo-convex portion on the chain stitch yarn 21.
  • a denier nonuniformity (a thickness nonuniformity) is generated on the chain stitch yarn 21.
  • the fused portion 100 acts as the resisting member against the fray of the chain stitch yarn 21 so that the progress of the fray of the chain stitch yarn 21 can be prevented.
  • the thread-shaped thermal bonding yarn 23 does not remain in the knitted lace fabric 120. Therefore, a pattern is less influenced by the thermal bonding yarn 23 so that a sense of beauty can be enhanced.
  • the knitting condition in the knitted fabric knitting step and the heating condition at the heating step are set in such a manner that the extension limiting amount ⁇ 1 of the whole second precursor knitted fabric excluding the thermal bonding yarn 23 is larger than the extension limiting amount ⁇ 2 of the thermal bonding yarn 23 obtained after the heating step ( ⁇ 1 > ⁇ 2).
  • the extension limiting amount ⁇ 1 of the whole second precursor knitted fabric excluding the thermal bonding yarn 23 is increased.
  • the thermal bonding yarn 23 having a small fineness using the thermal bonding yarn 23 having a small extension limiting amount obtained after the melting or implementing the thermal boning yarn 23 by a material to generate a fragility after a dissolution, the extension limiting amount ⁇ 2 of the thermal bonding yarn 23 obtained after the heating step is reduced.
  • an extension amount ⁇ 3 of the second precursor knitted fabric to be extended at the breaking step is set to be larger than the extension limiting amount ⁇ 2 of the thermal bonding yarn 23 and to be smaller than the extension limiting amount ⁇ 1 of the whole second precursor knitted fabric excluding the thermal bonding yarn 23 ( ⁇ 2 ⁇ ⁇ 3 ⁇ ⁇ 1). Consequently, it is possible to break the thermal bonding yarn 23 without breaking the yarns 21 and 22 other than the thermal bonding yarn 23, for example, the chain stitch yarn 21. Thus, it is possible to hinder a strength of the knitted lace fabric 120 from being reduced, thereby preventing the fray of the knitted lace fabric 120.
  • the heating condition at the heating step is set in such a manner that the thermal bonding yarn 23 is molten and the yarns other than the thermal bonding yarn 23 which are contained in the knitted fabric are prevented from being fragile. Furthermore, it is preferable that the heating condition at the heating step should be set to divide the thermal bonding yarn 23 through melting. Also before the breaking step, consequently, the thermal bonding yarn 23 divided into a plurality of portions can be caused to stick to the respective yarns after the heating step. More specifically, the thermal bonding yarn 23 may be molten partially or wholly. By melting the whole thermal bonding yarn 23 to prevent a thread-like original shape from being maintained, furthermore, it is possible to form a large fused portion 100, thereby preventing the fray more reliably.
  • a heating temperature and a heating time are set, for example.
  • the lowest melting temperature for melting the thermal bonding yarn 23 is represented by B1 and a time required for softening when heating is carried out at the lowest melting temperature is represented by D1.
  • the lowest melting temperature at which the yarns other than the thermal bonding yarn 23 are made fragile is represented by B2 and a time required for softening when the heating is carried out at the lowest melting temperature is represented by D2.
  • B1 ⁇ B3 ⁇ B2 and D1 ⁇ D3 ⁇ D2 are set, wherein a heating temperature and a heating time at the heating step are represented by B3 and D3 respectively.
  • a polyester based thermoplastic polyurethane elastic yarn of 10 deniers to 300 deniers, and preferably 10 deniers to 50 deniers is used as the thermal bonding yarn 23. Furthermore, a heat treatment is carried out at a heating temperature which is equal to or higher than 170°C and is equal to or lower than 195°C for a heating time which is equal to or longer than 30 sec and is equal to or shorter than 90 sec. Consequently, the thermal bonding yarn 23 is molten and the residual yarns can be prevented from being fragile.
  • the thermal bonding yarn 23 can be divided by the melting. Furthermore, it is preferable that the thermal boning yarn 23 should be constituted by a material which is caked after the melting, thereby increasing a fragility, that is, reducing a strength than before the melting.
  • the heating time is constant, a bonding force of the molten thermal bonding yarn 23 and the residual yarns is reduced when the heating temperature is set to be lower than 170°C. Furthermore, the yarn is not divided as the bonding yarn but the bonding yarn itself remains so that the second precursor knitted fabric is hardened.
  • the heating temperature exceeds 195°C, furthermore, a residual material such as nylon causes a hot shortness.
  • the thermal bonding yarn 23 is hard to break.
  • the bonding force is reduced and the fused portion 100 cannot be enlarged.
  • the fineness of the thermal bonding yarn 23 is set to be equal to or higher than 10 deniers and to be equal to or lower than 300 deniers, it is possible to easily carry out the breakage, and furthermore, tomaintain the bonding force and to enlarge the fused portion 100.
  • the fineness of the thermal bonding yarn 23 By further setting the fineness of the thermal bonding yarn 23 to be equal to or higher than 10 deniers and to be equal to or lower than 50 deniers, it is possible to prevent the thermal bonding yarn 23 from being more conspicuous than the pattern, thereby increasing the bonding force of the chain stitch yarn 21 and the thermal bonding yarn 23.
  • Table 1 shows a result of fray test for the knitted lace according to the embodiment in which the thermal bonding yarn 23 is broken and a knitted lace according to a comparative example in which the thermal bonding yarn 23 is not broken.
  • Knitted lace according to embodiment Knitted lace according to comparative example Breaking state of yarn Broken Not broken Washing resistance test Number of washing times: 30 Fray of scallop portion ⁇ (No abnormality) ⁇ (Slight fray) Fray of lace cut surface ⁇ (Slight fray) ⁇ (Fray) Number of washing times: 50 Fray of scallop portion ⁇ (No abnormality) ⁇ (Slight fray) Fray of lace cut surface ⁇ (Slight fray) ⁇ (Fray)
  • the washing operation was repetitively carried out by a washing method defined in the JIS-L-0217 103 Laws and a test for checking whether fray is generated on a lace was performed.
  • the knitted lace according to the embodiment can be prevented from being frayed more greatly than in the comparative example.
  • the thermal bonding yarn 23 should be formed by polyurethane elastic yarns manufactured by a melting spinning technique excluding a polyether based polyurethane elastic yarn. Consequently, it is possible to prevent the thermal bonding yarn 23 from being dissociated from the chain stitch yarn 21, thereby breaking the thermal bonding yarn 23 suitably.
  • Fig. 7 is a flowchart showing another manufacturing process for the knitted lace fabric 120.
  • Step b0 the processing proceeds to Step b1 in which the manufacture of the knitted lace fabric 120 is started.
  • a knitted fabric knitting step of forming the first precursor knitted fabric 20 to be a precursor of the knitted lace fabric 120 is carried out in the same manner as in the Step b1.
  • the processing proceeds to Step b2.
  • a thermal setting step of arranging the knitted fabric into a predetermined shape is carried out.
  • the knitted fabric is maintained to have the predetermined shape.
  • the predetermined shape is flat or is provided with pleats.
  • the first precursor knitted fabric is heated to a melting temperature of the thermal bonding yarn 23 or more in a state in which the first precursor knitted fabric is extended and is held to have a shape to be maintained. Consequently, the thermal bonding yarn 23 is molten to stick to another yarn.
  • the thermal bonding yarn 23 is caked, the knitted fabric can be held to have a shape maintained in the thermal setting and can be prevented from being deformed from the maintained shape.
  • the heating step of melting the thermal bonding yarn 23 and the breaking step of extending the knitted fabric are carried out at the same time.
  • the thermal setting step is completed, it is possible to form the knitted lace fabric 120 shown in Fig. 1 and the processing proceeds to Step b3.
  • a lace product including the knitted lace fabric 120 is manufactured by using the knitted lace fabric 120 which is formed after the Step b3, and the manufacture of the knitted lace fabric 120 is ended.
  • the heating step and the breaking step are carried out in parallel at the thermal setting step of arranging the knitted fabric into a predetermined shape.
  • the thermal setting step By simply carrying out the thermal setting step, consequently, it is possible to melt the thermal bonding yarn 23 and to break the bonding yarn 23 into a plurality of portions.
  • the heating step and the breaking step at the same time, thus, it is possible to shorten a manufacturing period.
  • the heating step and the breaking step are carried out at the same time in the thermal setting step of arranging the knitted fabric into a predetermined shape in the embodiment, it is also possible to carry out the heating step and the breaking step at the same time without intending the thermal setting.
  • the heating step and the breaking step may be carried out in another step such as a dyeing step.
  • the chain stitch yarn 21 is subjected to chain stitching so that the first loop-shaped portion 24 and the second loop-shaped portion 25 are formed.
  • the first loop-shaped portion 24 and the second loop-shaped portion 25 are alternately connected and arranged in a plurality of stages in a course direction C.
  • the first loop-shaped portion 24 is referred to as a needle loop and the second loop-shaped portion 25 is referred to as a sinker loop.
  • the first loop-shaped portion 24 and the second loop-shaped portion 25 are linked alternately and extended in the course direction C so that a wale 26 is formed.
  • a plurality of wales 26 are arranged and formed in the course direction C and are linked to each other so that a chain stitch structure, that is, a chain stitch configuration is formed.
  • the chain stitch yarn 21 is properly swung transversely to couple the adjacent wale 26 in a wale direction W so that a chain stitch structure having a fray preventing function is formed.
  • a portion in which the chain stitch yarn 21 is swung transversely is referred to as a run stopping portion 42.
  • the first loop-shaped portions 24 are formed in a substantially U shape respectively and are arranged and disposed almost in the predetermined course direction C and the wale direction W which is orthogonal to the course direction C. Furthermore, each of the first loop-shaped portions 24 is opened in an earlier stage in the course direction C. The first loop-shaped portions 24 are arranged in a line in the wale direction W to form a course and are arranged in a line in the course direction C to form the wale 26.
  • the second loop-shaped portion 25 couples the first loop-shaped portions 24 arranged in the course direction C. For example, attention is paid to one second loop-shaped portion 25a.
  • the second loop-shaped portion 25a of interest has one end coupled to an end of a first loop-shaped portion 24a in the same stage as the second loop-shaped portion 25a of interest.
  • the second loop-shaped portion 25a of interest extends from one end thereof to the other end thereof such that the second loop-shaped portion 25a of interest is inserted through a first loop-shaped portion 24b in the earlier stage in the course direction C of the second loop-shaped portion 25a of interest from one side to the other side and is thus extended toward a later stage in the course direction C, and is inserted through the first loop-shaped portion 24a in the same stage as the second loop-shaped portion 25a of interest from the other side to the one side and is thus extended toward the later stage in the course direction C and is connected to an end of a first loop-shaped portion 24c in the later stage in the course direction C of the second loop-shaped portion 25a of interest.
  • the loop-shaped portions 24 and 25 are coupled to each other like a chain so that the wale 26 extended in the course direction C is formed.
  • the respective yarns 22 and 23, for example, the inserting yarn 22 and the thermal bonding yarn 23 are interposed between the first loop-shaped portion 24 and the second loop-shaped portion 25 and are thus knitted into the wale 26.
  • the first loop-shaped portion 24 is hidden by the inserting yarn 22 and the thermal bonding yarn 23.
  • a pattern and a lace pattern which are formed on the first precursor knitted fabric 20 appear more clearly as compared with a back face.
  • the second loop-shaped portion 25a of interest is inserted, toward the front face side, through the first loop-shaped portion 24b in the earlier stage in the course direction C of the second loop-shapedportion 25a and is inserted, toward the back face side, through the first loop-shaped portion 24a in the same stage in the course direction C of the second loop-shaped portion 25a, and is thus connected to the first loop-shaped portion 24c in the later stage in the course direction C.
  • the inserting yarn 22 serves to form a lace pattern in a chain stitch structure.
  • the inserting yarn 22 is knitted into the wales 26 which are adjacent to each other in the wale direction W respectively, thereby coupling two wales 26 which are adjacent to each other in the wale direction W.
  • the inserting yarn 22 has a transverse swing portion extended from one of the wales 26 to the other wale 26 which are adjacent to each other in the wale direction W and an inserting yarn knitting portion knitted into the wale 26.
  • a space surrounded by two transverse swing portions arranged in the course direction C and the wale coupled by the transverse swing portions is provided with a through hole inserted in a vertical direction of the knitted fabric.
  • the transverse swing portion of the inserting yarn 22 is selectively disposed so that the shape and arrangement of the through hole is regulated. Consequently, a lace pattern represented by the arrangement and shape of the through hole can be formed on the first precursor knitted fabric 20.
  • the through hole surrounded by the transverse swing portion and the wale 26 is filled with a pattern yarn which will be described below and a pattern is thus formed in some cases.
  • the inserting yarn 22 is extended to the front face side with respect to the first loop-shaped portion 24.
  • the inserting yarn 22 is inserted between the first loop-shaped portion 24 and the second loop-shaped portion 25 which are preset, and is extended in the wale direction W.
  • a plurality of inserting yarns 22 are knitted into the chain stitch structure and are arranged and knitted in the wale direction W. A position in which each of the inserting yarns 22 is to be knitted is properly selected by the lace pattern formed on the first precursor knitted fabric 20.
  • the thermal bonding yarn 23 is implemented by a yarn having a lower melting point temperature than the chain stitch yarn 21 and the inserting yarn 22.
  • a yarn to be partially molten is used in a heating state at a heating step to be carried out after the formation of the first precursor knitted fabric 20.
  • the thermal bonding yarn 23 is used for preventing fray of the chain stitch yarn 21 and the inserting yarn 22 which constitute the first precursor knitted fabric 20.
  • the thermal bonding yarn 23 is implemented by a non-covering yarn, that is, a so-called bare yarn which is not covered with a covering yarn and is implemented by a polyurethane elastic yarn having a melting temperature which is equal to or higher than approximately 140°C and is equal to or lower than 195°C.
  • the thermal bonding yarn 23 is knitted into the chain stitch structure in an extending state to a natural condition.
  • thermal bonding yarn 23 a yarn having a low heat resistance in the polyurethane elastic yarns is used as the thermal bonding yarn 23. More specifically; any thermal bonding yarn 23 in the following Table 2 is used. [Table 2] Type name Fineness (dtex) Breaking extension percentage (%) Breaking strength (cN/dtex) 100% extension stress (cN) 300% extension stress (cN) Elastic yarn 20 370 1.5 2.6 16.2 44 470 1.1 3.1 13.5
  • thermal bonding yarn 23 furthermore, when a treating time is set to be 60 minutes, an extension ratio is maintained to be 100% and a heat and humidity treating temperature is set to be 105°C, a set ratio of approximately 85% is obtained. When the heat and humidity treating temperature is set to be 120°C, furthermore, a set ratio of approximately 93% is obtained. When the heat and humidity treating temperature is set to be 130°C, furthermore, a set ratio of approximately 93% is obtained.
  • the extension ratio is maintained to be 100% with a treating time set to be one minute and the heat and humidity treating temperature is set to be 120°C, furthermore, a set ratio of approximately 78% is obtained.
  • the heat and humidity treating temperature is set to be 140°C, furthermore, a set ratio of approximately 85% is obtained.
  • the thermal bonding yarn 23 is extended along the wale and is knitted into all of the loop-shaped portions constituting the wale. Accordingly, the thermal bonding yarn 23 is knitted into both a ground portion in which an amount of the yarn per unit area is small and a pattern portion in which the amount of the yarn per unit area is larger than that in the ground portion in the chain stitch structure.
  • the first precursor knitted fabric 20 has a plurality of thermal bonding yarns 23 and each of the thermal bonding yarns 23 is knitted per wale. Thus, the thermal bonding yarn 23 is knitted over a whole region of the chain stitch structure.
  • the thermal bonding yarn 23 is disposed on the front face side (this side in a perpendicular direction to the paper in Figs. 1 to 3 ) with respect to the first loop-shaped portion 24 and is disposed on the back face side with respect to the second loop-shaped portion 25.
  • the thermal bonding yarn 23 advances zigzag in the course direction C along the corresponding wale.
  • the thermal bonding yarn 23 passes from one of the wales to the other wale in the course direction C between the first loop-shaped portion 24a and the second loop-shaped portion 25a which are of interest, it passes from one of the wales to the other wale between the first loop-shaped portion 24c and the second loop-shaped portion 25c in a course of the later stage in the course direction C of the first loop-shaped portion 24a of interest (an upper part in Figs. 1 to 3 ).
  • the thermal bonding yarn 23 passes through the front face side with respect to the first loop-shaped portion 24 and is extended over the region at the back face side of the first precursor knitted fabric 20 with respect to the inserting yarn 22. Accordingly, the thermal bonding yarn 23 is inserted between the first loop-shaped portion 24 and the inserting yarn 22 in a region in which the thermal bonding yarn 23 and the inserting yarn 22 are inserted between the first loop-shaped portion 24 and the second loop-shaped portion 25. Furthermore, the inserting yarn 22 is inserted between the thermal bonding yarn 23 and the second loop-shaped portion 25.
  • the chain stitch yarn 21 is stretched in the course direction C so that radii of curvature of the first loop-shaped portion 24 and the second loop-shaped portion 25 are decreased so that the thermal bonding yarn 23 is disposed between the inserting yarn 22 and the first loop-shaped portion 24 to come in contact with the inserting yarn 22 and the first loop-shaped portion 24.
  • the thermal bonding yarn 23 and the inserting yarn 22 cross each other and pass through the first loop-shaped portion 24 and the second loop-shaped portion 25 in the region in which the thermal bonding yarn 23 and the inserting yarn 22 are inserted between the first loop-shaped portion 24 and the second loop-shaped portion 25. More specifically, the thermal bonding yarn 23 passes through the first loop-shaped portion 24a of interest and the second loop-shaped portion 25a in the course in the same stage in the course direction C from the side on which the first loop-shaped portion 24a of interest is connected to the second loop-shaped portion 25b in the earlier stage in the course direction C (a lower part in Figs. 1 to 3 ).
  • the inserting yarn 22 passes through the first loop-shaped portion 24a of interest and the second loop-shaped portion 25a in the course in the same stage in the course direction C from the opposite side to the side on which the first loop-shaped portion 24a of interest is connected to the second loop-shaped portion 25b in the earlier stage in the course direction C.
  • the first precursor knitted fabric 20 is stretched in the course direction C so that the thermal bonding yarn 23 and the inserting yarn 22 are close to each other in a portion 31 in which both of them pass through the second loop-shaped portion 25.
  • the directions in which the thermal bonding yarn 23 and the inserting yarn 22 are inserted between the first loop-shaped portion and the second loop-shaped portion are different from each other in a portion of the first precursor knitted fabric 20 in which both the thermal bonding yarn 23 and the inserting yarn 22 are knitted into the chain stitch yarn 21.
  • the inserting yarn 22 and the thermal bonding yarn 23 come in contact with each other, to cause the thermal boding yarn 23 molten at the heating step to easily stick to the chain stitch yarn 21, and to easily form the fused portion 100 on the chain stitch yarn 21 in the knitted lace fabric 120.
  • the inserting yarn is set in addition to the thermal bonding yarn 23 in the embodiment, furthermore, other yarns may be set.
  • a pattern yarn or a jacquard yarn for forming a pattern on a knitted lace and a stretch yarn for causing the knitted lace to be elastic may be used for the yarns to cross each other without running along the thermal bonding yarn 23.
  • the inserting yarn 22 and the thermal bonding yarn 23 which are to be knitted into the chain stitch structure are not completely confined to the chain stitch structure.
  • some of a plurality of portions in which the inserting yarn 22 and the thermal bonding yarn 23 come in contact with each other have a portion in which the thermal bonding yarn 23 is disposed on the front face side with respect to the inserting yarn 22.
  • the thermal bonding yarn 23 is disposed on the back face side with respect to the inserting yarn 22.
  • a fineness of each of the chain stitch yarn 21 and the inserting yarn 22 is equal to or smaller than 50 deniers, and particularly, a multifilament having a fineness of 40 deniers or less is used.
  • the chain stitch yarn 21 has such a thickness as not to be cut when it is used as a knitted lace product and the chain stitch yarn 21 which is as thin as possible is used.
  • the chain stitch yarn 21 can be implemented by various fibers such as nylon (a polyamide type synthetic fiber), rayon, polyester, acryl, wool, cotton, hemp, rayon and polypropylene.
  • the various yarns used in the embodiment are only illustrative and other types of yarns may be used.
  • the chain stitch yarn 21 is formed by a nylon fiber and a yarn having a fineness of 30 deniers is selected.
  • the inserting yarn 22 is formed by a multifilament fiber and a yarn having a fineness of 30 deniers is selected.
  • thermal bonding yarn 23 furthermore, there is used a polyurethane elastic yarn having a fineness which is equal to or higher than 10 deniers and is equal to or lower than300deniers.
  • a material which has a comparatively low melting temperature and a thermoplasticity in addition to the polyurethane elastic yarn.
  • the thermal bonding yarn 23 may be implemented by a polyamide type synthetic fiber.
  • the thermal bonding yarn 23 may be formed by using a non-extensible yarn.
  • the first precursor knitted fabric 20 has a melting temperature which is equal to or higher than the melting temperature of the thermal bonding yarn 23 after the knitting operation and is heated at a temperature which is lower than the melting point temperatures of the residual yarns 21 and 22. Consequently, a part of the thermal bonding yarn 23 is partially dissolved. Apart of the dissolved portions stick to the chain stitch yarn 21 and the inserting yarn 22 which are adjacent to each other. By carrying out caking in this state, the chain stitch yarn 21 and the inserting yarn 22 which come in contact with the thermal bonding yarn 23 can be prevented from being isolated from the thermal bonding yarn 23. Furthermore, the yarns 21 and 22 coming in contact with the thermal bonding yarn 23 can be bonded to each other through the thermal bonding yarn 23. Consequently, a coupling state of the respective yarns can be maintained so that the fray of the yarn can be prevented.
  • the binding of the chain stitch structure is strengthened in a sticking portion in which the thermal bonding yarn 23 sticks to another yarn. More specifically, the first loop-shaped portion 24 and the second loop-shaped portion 25 are bonded to each other through the thermal bonding yarn 23. Also in the case in which a part of the chain stitch yarn 21 is divided, consequently, it is possible to prevent the second loop-shaped portion 25 from being isolated from the first loop-shaped portion 24. Thus, the fray of the chain stitch yarn 21 is prevented in the bonding portion of the first loop-shaped portion 24 and the second loop-shaped portion 25 so that the chain stitch yarn 21 can be prevented from being frayed beyond the bonding portion. Also in the second precursor knitted fabric 20A obtained before the thermal bonding yarn 23 is broken, accordingly, there is an advantage that the fray can be prevented. Description will be given to the fray preventing effect of the second precursor knitted fabric 20A.
  • Fig. 8 is a knitting view for explaining a prevention of the fray of the second precursor knitted fabric 20A according to the embodiment and Fig. 9 is a knitting view showing the knitted lace fabric 10A according to a comparative example.
  • the second precursor knitted fabric 20A which is obtained by heating the first precursor knitted fabric 20 in which thermal bonding yarn 23 is knitted, is shown.
  • the knitted lace fabric in which the thermal bonding yarn 23 is not knitted is shown.
  • the knitted lace fabric 10A according to the comparative example in the case in which two second loop-shaped portions 25 arranged in the course direction C are cut off in dividing portions 40 and 41, the dividing portion 40 in the later stage C in the course direction is pulled in a direction of the front face side, so that a portion with which the chain stitch yarn 21 is to be engaged is broken and the chain stitch structure gets loose along an earlier stage in the course direction C from the dividing portion 40.
  • the loosening of the chain stitch structure progresses along the earlier stage in the course direction C to reach the run stopping portion 42, and the loosening is suppressed in the run stopping portion 42.
  • the thermal bonding yarn 23 is extended in the course direction C in the second precursor knitted fabric 20A according to the embodiment. Therefore, the first loop-shaped portion 24 and the second loop-shaped portion 25 in a same stage in every course are bonded to each other.
  • the loosening of the chain stitch structure can be hindered in a bonding portion 44 in which the first loop-shaped port ion 24 and the second loop-shaped portion 25 are bonded to each other in the further later stage than the dividing portion 40 in the course direction C because of the presence of the bonding portion 44 and a further progress of the loosening can be prevented.
  • the knitted lace fabric 10A according to the comparative example accordingly, it is possible to prevent the chain stitch structure from being loosened. Furthermore, the loosening is suppressed in the bonding portions 43 and 44. Therefore, it is possible to decrease or eliminate the run stopping portions 42. As compared with the comparative example, thus, the sense of transparency of the knitted lace can be enhanced more greatly.
  • the first loop-shaped portion 24 and the second loop-shaped portion 25 in the same stage in the course direction C are bonded to each other in every course direction C, so that it is possible to prevent the wale from being divided in the course direction C, even if a part of the second loop-shaped portion 25 is divided.
  • the thermal bonding yarn 23 is extended along the wale and is formed. As to the chain stitch structure, therefore, it is possible to increase the binding in the course direction C and enhancing a durability thereby.
  • Fig. 10 is a knitting view for explaining fray of the second precursor knitted fabric 20A according to the embodiment and Fig. 11 is a knitting view showing the knitted lace fabric 10A according to the comparative example.
  • the second precursor knitted fabric 20A which is obtained by heating the first precursor knitted fabric 20 in which thermal bonding yarn 23 is knitted, is shown.
  • a knitted lace fabric 10A according to the comparative example shown in Fig. 11 is a knitted lace fabric 10A in which the thermal bonding yarn 23 is not knitted.
  • the inserting yarn 22 is knitted over a plurality of wales.
  • the thermal bonding yarn 23 is knitted into each wale 26 in the second precursor knitted fabric 20A according to the embodiment. Therefore, the inserting yarn 22 is bonded to the first loop-shaped portion 24 and the second loop-shaped portion 25 for each wale.
  • the inserting yarn 22 is cut off in the dividing portion 45, even if the portion 46 in one of the wale directions W which is beyond at least one wale from the dividing portion 45 is pulled in the wale direction W in the inserting yarn 22, bonding portions 47 and 48, in which the inserting yarn 22 and the wale 26 are bonded, are bonded to each other, so that the dividing portion 45 can be prevented from slipping from the wale 26 and a progression of the shift of the inserting yarn 22 can be prevented.
  • the inserting yarn 22 is fixed to the chain stitch structure by the bonding force of the thermal bonding yarn 23, with the result that it is possible to prevent the inserting yarn 22 from being shifted and slipping.
  • the wales 26 which are adjacent to each other in the wale direction W are bonded to each other through the inserting yarn 22, so that an interval between the adjacent wales can be prevented from being expanded or narrowed.
  • the embodiment it is possible to prevent the fray of each of yarns constituting the second precursor knitted fabric 20A. Furthermore, even if the knitted lace fabric 120 is formed by breaking the thermal bonding yarn 23 in the second precursor knitted fabric 20A into a plurality thereof, a fray-prevention effect in the knitted lace fabric 120 achieved in the second precursor knitted fabric 20A can be further enhanced. Consequently, it is possible to prevent the fray of the yarn caused by a manufacturing state such as sewing or cutting operation and using state such as wearing or washing in the knitted lace fabric 120. Thus, it is possible to enhance quality.
  • the thermal bonding yarn 23 is a bare yarn in which a surface portion has a heat solubility.
  • a portion of the thermal bonding yarn 23 which comes in contact with the chain stitch yarn 21 is molten and sticks to the chain stitch yarn 21.
  • a portion of the thermal bonding yarn 23 which comes in contact with the inserting yarn 22 is molten and sticks to the inserting yarn 22.
  • an exposed portion of the thermal bonding yarn 23 which directly comes in contact with other yarns becomes a portion to stick to the other yarns. Therefore, an amount of the thermal bonding yarn 23 to stick to the other yarns can be increased, so that a bonding force can be enhanced. Therefore, the fray of each yarn can be prevented further reliably.
  • the thermal bonding yarn 23 with the non-covering yarn, that is, the bare yarn which is not covered with the covering yarn, furthermore, it becomes possible to further decrease the amount of the yarns in the ground portion and to increase the difference in the density of the yarns between the ground portion and the pattern portion.
  • the sense of transparency of the knitted lace fabric 120 can be enhanced and the pattern can be clear.
  • the thermal bonding yarn 23 is knitted over the whole region of the chain stitch structure. Therefore, it is possible to prevent the fray of the yarns in the whole knitted 1 knitted lace fabric 120. For example, even if the knitted lace fabric 120 is sewn or cut in an arbitrary position, it is possible to prevent the yarns from being frayed in a sewn portion and a cut portion.
  • the knitted lace fabric 120 it is possible to prevent the fray of the yarns over the whole knitted lace fabric 120.
  • the knitted lace fabric 120 according to the embodiment is used as the knitted lace fabric for forming the eyelash lace, it is possible to prevent the fray of the eyelash-shaped portion.
  • a motif cut in which the knitted lace fabric 120 is cut in an arbitrary position furthermore, it is possible to prevent the fray of the cut portion.
  • an application to a wide lace can also be carried out.
  • the thermal bonding yarn 23 and the inserting yarn 22 are inserted between the first loop-shaped portion 24 and the second loop-shaped portion 25 and are thus knitted into the chain stitch structure.
  • a face on the side where the first loop-shaped portion 24 is disposed with respect to the inserting yarn 22 knitted into the chain stitch structure is a rear face, and a face on an opposite side thereof is a front face.
  • the inserting yarn 22 is disposed in the front face direction Z1 rather than thermal bonding yarn 23 in a portion in which the thermal bonding yarn 23 and the inserting yarn 22 are knitted in common. As seen from the front face of the knitted lace fabric 120, accordingly, the thermal bonding yarn 23 and the first loop-shaped portion 24 are hidden by the inserting yarn 22.
  • the thermal bonding yarn 23 can be hidden by the inserting yarn 22 and can be difficult to be seen from the front face. Consequently, a pattern to be formed on the knitted lace fabric 120 can be clear. Further, even if the thermal bonding yarn 23 is molten, it is possible to lessen an influence on the pattern seen from the front face. Furthermore, the thermal bonding yarn 23 passes through a portion between the first loop-shaped portion 24 and the inserting yarn 22, so that the first loop-shaped portion 24 and the inserting yarn 22 can be bonded to each other and the inserting yarn 22 can be prevented from being removed from the chain stitch structure.
  • the thermal bonding yarn 23 and the inserting yarn 22 pass through the loop-shaped portion 25 in different directions from each other in a region in which the thermal bonding yarn 23 and the inserting yarn 22 are inserted between the first loop-shaped portion 24 and the second loop-shaped portion 25.
  • the knitted lace fabric 120 is pulled in the wale direction W, so that the regions surrounded by the thermal bonding yarn 23 and the inserting yarn 22 are close to each other in the wale direction W, and then an approaching portion 34, in which the thermal bonding yarn 23, the inserting yarn 22, the first loop-shaped portion 24 and the second loop-shaped portion 25 approach each other, is generated.
  • the fineness of the thermal bonding yarn 23 is set to 10 deniers to 300 deniers and the fineness of the chain stitch yarn is set to 20 deniers to 70 deniers.
  • the thermal bonding yarn 23 has fineness which is smaller than 10 deniers, there is a possibility that all of the thermal bonding yarns in the knitted lace might be molten.
  • a part of the thermal bonding yarn 23 is set to be molten, furthermore, there is a possibility that the amount of bonding of the thermal bonding yarn 23 to the other yarns might be insufficient. In this case, the fray of the yarn might be caused.
  • the thermal bonding yarn 23 has a fineness which is greater than 300 deniers, furthermore, the sense of transparency of the knitted lace is deteriorated, and a sense of beauty is decreased due to decrease of the difference in the density of the yarns between the groundportion and the pattern portion through the thermal bonding yarn 23. Furthermore, the knitted lace is hardened.
  • the thermal bonding yarn 23 it is possible to eliminate the fray of the yarns and to suppress reduction in the sense of beauty by setting the thermal bonding yarn 23 to have a fineness which is 10 deniers to 300 deniers.
  • the thermal bonding yarn 23 By setting the thermal bonding yarn 23 to have a fineness of equal to or smaller than 70 deniers, furthermore, it is possible to further suppress the reduction in the sense of beauty.
  • Fig. 12 is a side view showing a knitting portion of a raschel knitting machine 60 for knitting the first precursor knitted fabric 20 according to the first embodiment.
  • the first precursor knitted fabric 20 can be knitted by the back jacquard raschel knitting machine, for example.
  • the back jacquard raschel knitting machine 60 (hereinafter referred to as a knitting machine 60) has yarn guiding means for guiding the chain stitch yarn 21, the inserting yarn 22 and the thermal bonding yarn 23 toward a knitting position 73 in the vicinity of a knitting needle 72.
  • the yarn guiding means for guiding the thermal bonding yarn 23 toward the knitting position 73 is disposed behind the yarn guiding means for guiding the inserting yarn 22 toward the knitting position 73 in a rear part of the knitting machine.
  • the rear part of the knitting machine is set in a direction from a back face of the knitting needle 72 toward a hook portion.
  • the yarn guiding means provided in the knitting machine is implemented by a guide bar for thermal bonding yarn 61, jacquard bars 62 and 63, a plurality of pattern guide bars 64 and a base guide bar 65.
  • the chain stitch yarn 21 is inserted through the base guide bar 65
  • the inserting yarn 22 is inserted through the jacquard bars 62 and 63
  • the thermal bonding yarn 23 is inserted through the guide bar for thermal bonding yarn 61.
  • the pattern yarns are inserted through the pattern guide bars 64. Description will be given to the case in which the pattern yarn is knitted in addition to the thermal bonding yarn 23 and the inserting yarn 22.
  • Such yarn guiding means 61 to 65 are arranged radially toward the knitting position 73 in which the knitting needle 72 catches the chain stitch yarn 21 and are disposed in order of the base guide bar 65, the pattern guide bars 64, the jacquard bars 62 and 63, and the guide bar for thermal bonding yarn 61 toward the rear part of the knitting machine to be the direction in which the knitting needle 72 catches the chain stitch yarn 21. Accordingly, the yarns are arranged in the rear part of the knitting machine from a predetermined knitting position in order of the chain stitch yarn 21, the pattern yarns, the inserting yarn 22 and the thermal bonding yarn 23.
  • the knitting needles 72 are arranged and formed in a direction perpendicular to an anteroposterior direction of the knitting machine and are fixed to a needle bar 69 to be holding means for holding each of the knitting needles 72.
  • the needle bar 69 causes each knitting needle 72 to carry out an up-down motion. Furthermore, the needle bar 69 is operated, so that the yarns guided to the yarn guiding means 61 to 65 are guided to predetermined knitting positions.
  • the respective yarn guiding means 61 to 65 carry out an overlapping (a stitch knitting motion) for moving each yarn corresponding in a space formed in the rear part of the knitting machine to the knitting needle 72 in a direction in which the needles 72 are arranged synchronously with the up-down motion of the knitting needle 72 and an underlapping (inserting motion) for moving each yarn corresponding in a space formed in the front part of the knitting machine to the knitting needle 72 in the direction in which the knitting needles 72 are arranged.
  • a so-called swing (a swing motion) for a movement in a direction in an orthogonal direction to the direction in which the knitting needles 72 are arranged is carried out in addition to these lap motions. More specifically, there are two swing operations.
  • each corresponding yarn is moved from the space formed in the front part of the knitting machine to the space formed in the rear part of the knitting machine with respect to the knitting needle 72 through a side of the knitting needle 72.
  • a swing-out (front swing) operation to be a second swing operation, furthermore, each corresponding yarn is moved from the space formed in the front part of the knitting machine to the space formed in the rear part of the knitting machine with respect to the knitting needle 72 through the side of the knitting needle 72.
  • Guides attached to the yarn guiding means 61 to 65 are operated, so that each corresponding yarn passes in accordance with a predetermined path around the knitting needle 72 and a knitted fabric including each corresponding yarn is thus formed.
  • the knitting portion includes a stitch comb bar 71, a trick plate bar 68 and a tongue bar 70.
  • the tongue bar 70 a plurality of tongues are formed in a tip portion corresponding to the knitting needles.
  • the knitting machine 60 knits the first precursor fabric 20 by the operations of the yarn guiding means 61 to 65 and the needle bar 69.
  • the knitted lace fabric 20 formed by a knitting subsidiary function of the stitch comb bar 71 is subsidiarily knitted and the trick plate bar 68 is caused to pass therethrough, thereby winding the first precursor knitted fabric 20 by means of a winding portion provided in the vicinity of the knitting portion.
  • Figs. 13A to 13E are cross sectional views schematically illustrated for explaining movements of the knitting needle 72 and the base guide bar 65 in the chain stitch portion, and a knitting work of the chain stitch portion of the chain stitch yarn 21 progresses in order of Figs. 13A to 13E .
  • a hook portion 50 for engaging the chain stitch yarn 21 is formed in a tip portion and a knitting needle stem 51 formed on a base end.
  • a tongue 52 for opening/closing an opening formed by the hook portion 50 is formed in a tip portion of the tongue bar 70.
  • the knitting needle 72 and the tongue 52 are formed to be individually ascendable/descendable with respect to the base guide bar 65. Referring to Figs. 13A to 13E , only the knitting operation for the wale 26 will be first described and the inserting yarn 22 and the thermal bonding yarn 23 which are to be knitted into the wale 26 will be described later.
  • the hook portion 50 catches a new first loop-shaped portion 24j formed by the chain stitch 21 in a state in which the base guide bar 65 is disposed before the knitting needle 72 and the tongue 52 closes the opening of the hook portion 50.
  • the knitting needle 72 is moved upward toward the base guide bar 65 with respect to the tongue 52. Consequently, the opening of the hook portion 50 is opened, so that the first loop-shaped portion 24j of the chain stitch 21 caught by the hook portion 50 slips out of the hook portion 50 and is moved to the knitting needle stem 51.
  • the base guide bar 65 carries out the back swing with respect to the knitting needle 72 as shown in Fig. 13C . Then, the base guide bar 65 carries out the overlapping, and furthermore, carries out the front swing. Consequently, the chain stitch yarn 21 guided to the base guide bar 65 is moved so as to wind the knitting needle 72, thereby forming a new first loop-shaped portion 24k. The new first loop-shaped portion 24k is caught by the hook portion 50. As shown in Fig. 13D , thereafter, the tongue 52 is moved upward toward the hook portion 50 to close the opening of the hook portion 50. At this time, the old first loop-shaped portion 24j formed on the knitting needle stem 51 and the new first loop-shaped portion 24k with which the hook portion 50 is engaged are formed on the knitting needle 72.
  • the knitting needle 72 and the tongue 52 are moved downward together so that the old first loop-shaped portion 24j is removed from the knitting needle 72 and is moved to the trip plate 53 side.
  • the hook portion 50 catches the new first loop-shaped portion 24k formed by the chain stitch 21 in a state in which the base guide bar 65 is disposed before the knitting needle 72, so that almost the same state as that in Fig. 13A is brought.
  • the first loop-shaped portion 24 is sequentially formed, and furthermore, there is formed the wale 26 in which a second loop-shaped portion 25j coupling the first loop-shaped portions 24j and 24k is sequentially formed.
  • the base guide bar 65 properly carries out the underlapping, so that the wales 26 are coupled in the wale direction C.
  • the inserting yarns such as the inserting yarn 22 and the thermal bonding yarn 23 are knitted into the wale 26 while the knitting work for the wale 26 is carried out. Consequently, it is possible to form the first precursor knitted fabric 20 according to the embodiment.
  • Figs. 14A to 14C are cross sectional views schematically illustrating for explaining movements of the jacquard bar 62 and the guide bar for thermal bonding yarn 61, and the operation progresses in order of Figs. 14A to 14C .
  • Figs. 14A , 14B and 14C correspond to Figs. 13C , 13D and 13E respectively, and additionally show the jacquard bar 62 and the guide bar for thermal bonding yarn 61 respectively.
  • the jacquard bars 62 and 63 are disposed behind the base guide bar 65 for guiding the chain stitch yarn in the rear part of the knitting machine.
  • the guide bar for thermal bonding yarn 61 to be a guide bar for thermal bonding yarn is disposed behind the jacquard bars 62 and 63 in the rear part of the knitting machine.
  • the jacquard bar 62 and the guide bar for thermal bonding yarn 61 are also disposed in the rear part of the knitting machine with respect to the knitting needle 72.
  • the jacquard bar 62 and the guide bar for thermal bonding yarn 61 are also disposed before the knitting needle 72 in a state in which the base guide bar 65 is disposed in the front part of the knitting machine with respect to the knitting needle 72.
  • the jacquard bar 62 and the guide bar for thermal bonding yarn 61 carry out the underlapping in a state in which the base guide bar 65 performs a back swing so that the thermal bonding yarn 23 and the inserting yarn 22 which are guided cross the chain stitch yarn 21 as shown in Fig. 14B .
  • the guide bar for thermal bonding yarn 61 and the jacquard bar 62 are operated synchronously with the swing operation of the base guide bar 65.
  • the jacquard bar 62 is disposed ahead of the guide bar for thermal bonding yarn 61 in the front part of the knitting machine.
  • the thermal bonding yarn 23 guided to the knitting position is disposed behind the inserting yarn 22 guided to the knitting position in the rear part of the knitting machine and the inserting yarn 22 is positioned on the front face side of the first precursor knitted fabric 20 from the thermal bonding yarn 23.
  • Figs. 15A and 15B are structural views schematically illustrating an S region in Fig. 3
  • Fig. 15A is a structural view of the chain stitch yarn 21
  • Fig. 15B is a structural view of the thermal bonding yarn 23.
  • a knitting needle 72 placed in an arbitrary position is set to be a first knitting needle 72a
  • an adjacent knitting needle 72 to the first knitting needle 72a in one wale direction W is set to be a second knitting needle 72b
  • an adjacent knitting needle 72 to the second knitting needle 72b in another wale direction W is set to be a third knitting needle 72c.
  • An interval between the first knitting needle 72a and the knitting needle 72 disposed in another wale direction W with respect to the first knitting needle 72a is set to be a first knitting needle interval L1
  • an interval between the first knitting needle 72a and the second knitting needle 72b is set to be a second knitting needle interval L2
  • an interval between the second knitting needle 72b and the third knitting needle 72c is set to be a third knitting needle interval L3
  • an interval between the third knitting needle 72c and the knitting needle 72 disposed in one wale direction W with respect to the third knitting needle 72c is set to be a fourth knitting needle internal L4.
  • the base guide bar 65 for guiding each chain stitch yarn 21 carries out the same knitting operation as that of the chain stitch yarn 21.
  • description will be given by paying attention to a chain stitch yarn guide for catching the chain stitch yarn 21 on the second knitting needle 72b and description for the residual chain stitch yarn guides will be omitted.
  • a chain stitch yarn guide of interest in the first course C1, carries out a back swing in the third knitting needle interval L3, and then carries out the overlapping to pass through the second knitting needle interval L2 and performs a front swing.
  • the chain stitch yarn guide of interest in a second course C2, carries out the back swing in the second knitting needle interval L2, and then carries out the overlapping to pass through the second knitting needle interval L2 and performs the front swing.
  • the chain stitch yarn guide of interest carries out the underlapping in the fourth knitting needle interval L4, carries out the back swing in the fourth knitting needle interval L4, and then carries out the overlapping to pass through the third knitting needle interval L3 and performs the front swing.
  • the chain stitch yarn guide of interest carries out the back swing in the third knitting needle interval L3, and then carries out the overlapping to pass through the fourth knitting needle interval L4 and performs the front swing.
  • the chain stitch yarn guide of interest carries out the back swing in the fourth knitting needle interval L4, and then carries out the overlapping to pass through the third knitting needle interval L3 and performs the front swing.
  • the chain stitch yarn guide of interest carries out the underlapping in the fourth knitting needle interval L4, carries out the back swing in the fourth knitting needle interval L4, and then carries out the overlapping to pass through the third knitting needle interval L3 and performs the front swing.
  • the chain stitch yarn guide of interest carries out the underlapping in the second knitting needle interval L2, carries out the back swing in the second knitting needle interval L2, and then carries out the overlapping to pass through the third knitting needle interval L3 and performs the front swing.
  • the base guide bar 65 repetitively carries out an operation for catching the predetermined chain stitch yarn 21 on each knitting needle 72 in each course by using a guide provided for each chain stitch yarn 21. Consequently, it is possible to form the chain stitch portion extended like a chain.
  • the knitting machine 60 properly carries out the underlapping in a process for catching the chain stitch yarn 21 on the knitting needle 72 in each source. Consequently, the second loop-shaped portion 25 can be caused to swing transversely in the wale direction Wand another wale direction W so that the adjacent wales 26 in the wale direction W can be coupled to form a chain stitch structure having a fray preventing function.
  • the thermal bonding yarn 23 carries out a swing operation synchronously with the base guide bar 65 by the guide bar for thermal bonding yarn 61.
  • the guide bar for thermal bonding yarn 61 which serves to guide each of the thermal bonding yarns 23 carries out the same knitting operation for the each of the thermal bonding yarns 23.
  • description will be given by paying attention to the thermal bonding yarn guide for positioning the thermal bonding yarn 23 in the second knitting needle interval L3, and the description for the residual thermal bonding yarn guides will be omitted.
  • the thermal bonding yarn guide of interest carries out the underlapping in the second knitting needle interval L2 to reach the third knitting needle interval L3.
  • the thermal bonding yarn guide carries out the underlapping in the third knitting needle interval L3 to reach the second knitting needle interval L2.
  • the thermal bonding yarn guide of interest sequentially repeats the operations of the first course C1 and the second course after the second course C2.
  • the thermal bonding yarn 23 is reciprocated with the underlapping between the two adjacent knitting needle intervals synchronously with the swing operation of the base guide bar 65 by the guide bar for thermal bonding yarn 61.
  • the jacquard bar 62 repeats the underlapping for a predetermined distance and direction in a predetermined position synchronously with the swing operation of the base guide bar 65.
  • the base guide bar 64 repeats the underlapping for a predetermined distance and direction in a predetermined position synchronously with the swing operation of the base guide bar 65.
  • the guide bar for thermal bonding yarn 61, the jacquard bars 62 and 63, a plurality of pattern guide bars 64, the base guide bar 65 and the knitting needle 72 carry out the knitting operation so that a knitted lace fabric portion can be formed in the S region.
  • the base guide bar 65, the jacquard bars 62 and 63 and the guide bar for thermal bonding yarn 61 are disposed in order toward the rear part of the knitting machine so that the inserting yarn 22 can be disposed on the front face side of the first precursor knitted fabric 20 with respect to the thermal bonding yarn 23.
  • Fig. 16 is a flowchart showing a procedure for manufacturing a knitted lace product.
  • the processing proceeds to Step s1.
  • the chain stitch yarn 21, the inserting yarn 22, the thermal bonding yarn 23 and the pattern yarn are prepared and an operation program for each yarn guiding means of the knitting machine 60 is input in order to obtain the pattern determined at the Step s0.
  • the knitting machine 60 is operated. Consequently, the first precursor knitted fabric 20 having a desirable pattern can be formed.
  • the processing proceeds to Step s2.
  • the first precursor knitted fabric 20 formed at the Step s1 is dyed.
  • the processing proceeds to Step s3.
  • the first precursor knitted fabric 20 is heated to a predetermined temperature so as to be arranged.
  • the first precursor knitted fabric 20 is heated in a pulling state in the wale direction W. Consequently, the knitted fabric is arranged, and furthermore, a part of the thermal bonding yarn 23 is molten and sticks to another adjacent yarn.
  • the first precursor knitted fabric 20 is heated for a predetermined duration at a predetermined temperature, and the processing proceeds to Step s4. In the embodiment, a state at 180 to 195°C is maintained for 60 seconds to manufacture the knitted lace fabric 120.
  • the knitted lace fabric 120 is obtained by heating the first precursor knitted fabric 20, a part of the thermal bonding yarn 23 is fixed to another yarn. Furthermore, the knitted lace fabric 120 is extended compared to after Step s2, so that the thermal bonding yarn 23 is broken into a plurality thereof.
  • Step s4 the knitted lace fabric 120 is cut and the cut knitted lace fabric 120 is sewn, thereby manufacturing a knitted lace product.
  • the processing proceeds to Step s5 in which the work is ended.
  • the first precursor knitted fabric 20 is heated in the pulling state in the wale direction W so that the inserting yarn 22 and the thermal bonding yarn 23 approach the loop-shaped portions 24 and 25. Consequently, the loop-shaped portions 24 and 25 and the inserting yarn 22 can be bonded strongly by the thermal bonding yarn 23.
  • Fig. 17 is a view showing a knitting structure, typically illustrating a part of a first precursor knitted fabric 20B according to a second embodiment of the invention.
  • a direction in which a thermal bonding yarn 23 passes through a second loop-shaped portion 25 is different from that in the first precursor knitted fabric 20 according to the first embodiment, and the other structures are the same. Accordingly, the same structures as those in the first precursor knitted fabric 20 according to the first embodiment have the same reference numerals and description will be omitted.
  • the thermal bonding yarn 23 passes through the second loop-shaped portion 25 in the same direction as a inserting yarn 22 and is inserted between a first loop-shaped portion 24 and the inserting yarn 22. More specifically, the thermal bonding yarn 23 and the inserting yarn 22 pass through a first loop-shaped portion 24a of interest and a second loop-shaped portion 25a in the same stage in a course direction from an opposite side to a side on which the first loop-shaped portion 24a of interest is connected to the second loop-shaped portion 25b in an earlier stage C1 in the course direction.
  • the thermal bonding yarn 23 is inserted through the second loop-shaped portion 25 in the same direction as the inserting yarn 22 so that the number of contact portions of the inserting yarn 22, and the thermal bonding yarn 23 can be increased and a bonding force for the thermal bonding yarn 23 to bond the inserting yarn 22 can be enhanced. Consequently, it is possible to prevent the fray of the inserting yarn 22 more reliably.
  • the invention also includes the case in which the thermal bonding yarn 23 and the inserting yarn 22 pass through the first loop-shaped portion 24a of interest and the second loop-shaped portion 25a in the same stage in the course direction C from the side on which the first loop-shaped portion 24a of interest is connected to the second loop-shaped portion 25b in the earlier stage in the course direction C.
  • the invention also includes the case in which the thermal bonding yarn 23 passes through the second loop-shaped portion 25a in the same stage in the course direction C as the first loop-shaped portion 24a of interest from the side on which the first loop-shaped portion 24a of interest is connected to the second loop-shaped portion 25b in the earlier stage in the course direction C, and the inserting yarn 22 passes through the second loop-shaped portion 25a in the same stage in the course direction C as the first loop-shaped portion 24a of interest from the opposite side to the side on which the first loop-shaped portion 24a of interest is connected to the second loop-shaped portion 25b in the earlier stage in the course direction C.
  • Fig. 18 is a view showing a knitting structure, schematically illustrating a part of a first precursor knitted fabric 20D according to a third embodiment of the invention.
  • Fig. 19 is a view showing a knitting structure, schematically illustrating the first precursor knitted fabric 20D in which yarns other than a chain stitch yarn 21, a thermal bonding yarn 23 and a stretch yarn 27 are omitted.
  • the elastic stretch yarn 27 is further knitted separately from the thermal bonding yarn 23 as compared with the first precursor knitted fabric 20B according to the second embodiment and the other structures are the same. Accordingly, the same structures as those in the first precursor knitted fabric 20 according to the first embodiment have the same reference numerals and description will be omitted.
  • the first precursor knitted fabric 20D according to the third embodiment is knitted in a state in which the stretch yarn 27 is extended separately from the thermal bonding yarn 23 so that the first precursor knitted fabric 20D obtained after the knitting contracts. Consequently, it is possible to give an elasticity to the first precursor knitted fabric 20D.
  • a polyurethane elastic yarn, a so-called spandex is used for the stretch yarn.
  • the stretch yarn 27 is extended to the first loop-shaped portion 24 side with respect to the inserting yarn 22. Furthermore, the stretch yarn 27 and the thermal bonding yarn 23 cross each other and pass through the second loop-shaped portion 25 and are knitted into the chain stitch structure. In other words, the thermal bonding yarn 23 is knitted while extending in a different direction from a direction in which the stretch yarn 27 extends. The stretch yarn 27 is knitted into each of wales and thus passes zigzag in the course direction C along the wales respectively.
  • the stretch yarn 27 passes through a first loop-shaped portion 24a of interest and a second loop-shaped portion 25a in the same stage in a course direction from a side on which the first loop-shaped portion 24a of interest is connected to the second loop-shaped portion 25b in an earlier stage C1 in the course direction. Furthermore, the inserting yarn 22 and the thermal bonding yarn 23 pass through the first loop-shaped portion 24a of interest and the second loop-shaped portion 25a in the same stage in the course direction from an opposite side to a side on which the first loop-shaped portion 24a of interest is connected to the second loop-shaped portion 25b in the earlier stage in the course direction C. In a portion in which the stretch yarn 27, the thermal bonding yarn 23 and the inserting yarn 22 pass through the same loop together, accordingly, the stretch yarn 27 crosses the thermal bonding yarn 23 and the inserting yarn 22.
  • the thermal bonding yarn 23 bonds another yarn so that the fray of each yarn can be prevented. Furthermore, the thermal bonding yarn 23 bonds the stretch yarn 27 and the chain stitch yarn 21 so that it is possible to prevent a so-called span slip in which the stretch yarn 27 slips from the chain stitch structure.
  • the first precursor fabric 20D is pulled in the wale direction W so that regions surrounded by the stretch yarn 27 and the inserting yarn 22 approach each other in the wale direction W to generate an approaching portion 34 in which the thermal bonding yarn 23, the inserting yarn 22, the stretch yarn 27, the first loop-shaped portion 24 and the second loop-shaped portion 25 approach each other.
  • the first precursor knitted fabric 20D By heating the first precursor knitted fabric 20D in the pulling state in the wale direction W, thus, it is possible to melt a part of the thermal bonding yarn 23 in the approaching portion 34.
  • the inserting yarn 22 and the thermal bonding yarn 23 are extended in the same direction. Consequently, the number of the contact portions in which the thermal bonding yarn 23 comes in contact with the inserting yarn 22 can be increased and the inserting yarn 22 can be prevented from slipping off more reliably. Furthermore, the thermal bonding yarn 23 and the stretch yarn 27 cross each other so that the thermal bonding yarn 23 is bonded to the stretch yarn 27. Thus, it is possible to lessen restraining portions for restraining the stretch yarn 27. Consequently, it is possible to prevent a span slip while suppressing a reduction in elasticity of the knitted lace fabric.
  • the directions in which the thermal bonding yarn 23 and the stretch yarn 27 are inserted between the first loop-shaped portion and the second loop-shaped portion are different from each other in a portion of the first precursor knitted fabric 20 in which both the thermal bonding yarn 23 and the stretch yarn 27 are knitted into the chain stitch yarn 21.
  • the thermal bonding yarn 23 and the stretch yarn 27 are formed by the same kind of polyurethane based materials, and the chain stitch yarn 21 is formed of a different material from the thermal bonding yarn 23 such as nylon (a polyamide type synthetic fiber) in some cases.
  • nylon a polyamide type synthetic fiber
  • the thermal bonding yarn 23 sticks to the stretch yarn 27 formed of the same kind of material, it is hard to dissociate.
  • the thermal bonding yarn 23 sticks to the chain stitch yarn 21 formed of a different material, it can easily be dissociated.
  • the thermal bonding yarn 23 sticks to both the stretch yarn 27 and the chain stitch yarn 21, it is easily dissociated from the chain stitch yarn 21.
  • the fused portion 100 can be caused to remain in the chain stitch yarn 21.
  • Fig. 20 is a view showing a knitting structure, schematically illustrating a part of a first precursor knitted fabric 20E according to a fourth embodiment of the invention.
  • a direction in which a stretch yarn 27 is extended is different from that in the first precursor knitted fabric 20D according to the third embodiment and the other structures are the same.
  • the stretch yarn 27 passes through a first loop-shaped portion 24a of interest and a second loop-shaped portion 25a in the same stage in a course direction C from an opposite side to a side on which the first loop-shaped portion 24a of interest is connected to a second loop-shaped portion 25b in an earlier stage C in the course direction.
  • Fig. 21 is a side view showing a knitting portion of a back jacquard raschel knitting machine 60C for knitting the first precursor knitted fabrics 20D and 20E according to the third and fourth embodiments.
  • a guide bar for stretch yarn 66 to be yarn guiding means for guiding the stretch yarn 27 toward the knitting position 73 is disposed between the jacquard bar 62 and the guide bar for thermal bonding yarn 61. Since the other structures are the same as those in the knitting machine shown in Fig. 12 , description will be omitted.
  • the guide bar for stretch yarn 66 and the guide bar for thermal bonding yarn 61 are disposed so that the guide bar for stretch yarn 66 and the guide bar for thermal bonding yarn 61 are provided on a back face side with respect to the inserting yarn 22.
  • the knitted lace fabric 120 is seen from a front face side, consequently, the stretch yarn 27 and the thermal bonding yarn 23 are hidden by the inserting yarn 22.
  • the pattern of the knitted lace fabric can be clear.
  • the guide bar for stretch yarn 66 and the guide bar for thermal bonding yarn 61 may be different from each other, furthermore, it is possible to knit the first precursor knitted fabric 20D and 20E described in the third and fourth embodiments.
  • the guide bar for stretch yarn and the guide bar for thermal bonding yarn may be disposed to be longitudinally reverse. In this case, a longitudinal relationship between the stretch yarn and the thermal bonding yarn is reverse in the knitted lace fabrics according to the third and fourth embodiments. The case in which the stretch yarn and the thermal bonding yarn are inverted longitudinally is also included in the invention.
  • the knitted lace fabric formed by a front jacquard knittingmachine in which the jacquard bars 62 and 63 are disposed before the knitting machine from the pattern yarn is also included in the invention in the case in which the thermal bonding yarn 23 is knitted.
  • Fig. 22 is a view showing a knitting structure, schematically illustrating a part of a first precursor knitted fabric 20F according to a fifth embodiment of the invention.
  • a thermal bonding yarn 23 should be disposed on a back face side with respect to the inserting yarn 22, the case in which the thermal bonding yarn 23 is knitted into a front face side with respect to the inserting yarn 22 is also included in the invention as shown in Fig. 22 .
  • Fig. 23 is a side view showing a knitting portion of a back jacquard raschel knitting machine 60F for knitting the first precursor knitted fabric 20F according to the fifth embodiment.
  • the guide bar for thermal bonding yarn 61 is disposed in a front part of the knitting machine from the jacquard bar 62. Since the other structures are the same as those in the knitting machine shown in Fig. 20 , description will be omitted.
  • the embodiment according to the invention is a simple example of the invention and the structures can be changed within the range of the invention.
  • the thermal bonding yarn 23 and the inserting yarn 22 are knitted into the chain stitch structure having a fray preventing function in the embodiment, it is sufficient that the knitted fabric to be a base is formed by a chain stitch and the chain stitch structure is not restricted.
  • the same advantages can be obtained also in a chain stitch structure in which the second loop-shaped portion of the chain stitch yarn 21 does not swing transversely, that is, a chain stitch structure having no fray stopping effect.
  • the knitted fabric to be the base may be a tulle knitted fabric in addition to a basic chain stitch structure and may be formed to have a power net structure. By the formation into the power net structure, it is possible to form an elastic clear pattern in multiple directions. Furthermore, the knitted fabric to be the base may be a wide lace (allover lace) and a narrow lace.
  • the knitted lace fabric formed by the knitting machine according to the embodiment becomes elastic by knitting a spandex into the chain stitch structure.
  • the invention is not restricted thereto. More specifically, a knitted lace fabric formed by a knitting machine which does not knit the spandex is also included as the knitting machine according to another embodiment of the invention. In this case, the knitted lace fabric is hardly elastic but is a so-called rigid knitted lace fabric.
  • the thermal bonding yarn 23 may be a yarn whose elasticity is low or a yarn which is not elastic. The thermal bonding yarn 23 may consist of a material other than the aforementioned material, if the yarn can be broken after a weld.
  • the inserting yarn may be a pattern yarn or a floating yarn.
  • the thermal bonding yarn 23 does not need to be knitted into all of the chain stitch portions but may be knitted into the chain stitch portion at an interval in the wale direction W and the course direction C.
  • the knitted lace fabric structures according to the embodiments are only illustrative and it is possible to properly change a structure of a knitted fabric to be a base, a way of knitting each inserting yarn and types of the chain stitch yarn and each of the inserting yarns.
  • the thermal bonding yarn 23 is set to be a non-covering yarn, furthermore, it may be implemented by a covering yarn constituted by a core yarn and a covering yarn.
  • the knitted lace fabric is heated so that a part of the thermal bonding yarn contained in the knitted lace fabric is molten and the binding of the respective yarns is strengthened. Accordingly, it is possible to prevent the fray of the knitted lace formed by using the knitted lace fabric.
  • the chain stitch structure is formed by using the chain stitch yarn which is different from the thermal bonding yarn. Consequently, it is not necessary to thicken the thermal bonding yarn in order to leave the chain stitch structure.
  • the knitted lace is manufactured by using the knitted lace fabric. Consequently, it is possible to prevent the fray of the yarn and to increase the difference in the density of the yarn between the ground portion and the pattern portion, to enhance a sense of transparency of the knitted lace and to cause the pattern to be clear, thereby suppressing deterioration in a sense of beauty.
EP07806533.1A 2007-03-28 2007-08-31 Procédé de production d'une dentelle tricotée Expired - Fee Related EP2039826B1 (fr)

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JP2007086052A JP2008240211A (ja) 2007-03-28 2007-03-28 編レースの製造方法および編レース
PCT/JP2007/067060 WO2008120407A1 (fr) 2007-03-28 2007-08-31 Dentelle tricotée et son procédé de production

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CN104404701B (zh) * 2014-10-28 2016-08-24 江南大学 一种纬编蕾丝面料的生产方法
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CN101426971B (zh) 2011-01-12
WO2008120407A1 (fr) 2008-10-09
TWI352757B (en) 2011-11-21
JP5044463B2 (ja) 2012-10-10
EP2039826B1 (fr) 2014-11-12
JP2009013554A (ja) 2009-01-22
TW200839048A (en) 2008-10-01
EP2039826A4 (fr) 2013-06-12
KR20080105153A (ko) 2008-12-03
CN101426971A (zh) 2009-05-06
KR101057973B1 (ko) 2011-08-19
JP2008240211A (ja) 2008-10-09

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