JPWO2020031383A1 - Lace knitted fabric - Google Patents

Abstract

A lace knitted fabric having a good texture without tearing of the cut end is provided in which the chain knitting yarn is suppressed from breaking during knitting. In the lace knitted fabric, each loop-shaped part is inserted in the course direction and knitted into the chain knitting structure, and a part of the plurality of loop-shaped parts is inserted in the course direction to form the chain knitting structure. A second insertion thread to be knitted, a parallel running portion which is a third insertion thread and is knitted side by side with the second insertion thread by inserting a loop-shaped portion of the chain knitting structure in the course direction, and a predetermined chain knitting. The chain knitting yarns constituting each chain knitting structure are spaced in the course direction, including a third insertion thread having a transverse portion knitted from the tissue into a loop-shaped portion of the chain knitting structure adjacent to the wale direction. The second insertion thread and the third insertion thread that extend laterally from each chain knitting structure to the chain knitting structure adjacent to one side in the wale direction and are woven into the chain knitting structure adjacent to one side in the wale direction. It has a running portion and a laterally extending portion that can be hooked on.

Description

The present invention relates to a lace knitted fabric that can be suitably used as a fabric or frills for women's underwear having elasticity.

Inventions relating to lace knitted fabrics of the prior art are described in, for example, Patent Documents 1 and 2. In the inventions described in Patent Documents 1 and 2, the lace knitted fabric is composed of a covering yarn in which a coating yarn is wound around a core yarn, and a chain knitting yarn forming a chain knitting structure forming one wale and a chain knitting yarn. A technique has been proposed in which an insert yarn woven in the course direction as an elastic yarn is adhered to a tissue by heat fusion at a contact portion to prevent fraying at a cut portion.

Japanese Unexamined Patent Publication No. 2008-280627 Japanese Unexamined Patent Publication No. 2011-2198776

In the above-mentioned conventional technique, the chain knitting yarn and the insertion yarn are adhered at the contact portion to prevent fraying, etc., but especially during the production of the lace knitted fabric, the precursor of the lace knitted fabric is used as a course. When the yarn is expanded and contracted in the extending direction, the chain knitting yarn wound around the insertion yarn may be pulled by the insertion yarn and break. Further, when the cut portion of the lace knitted fabric is pulled with a strong force in the direction in which the wale extends, the insertion thread may come off from the adhesive portion and the cut end may be torn.

Therefore, an object of the present invention is to provide a lace knitted fabric in which the chain knitting yarn is suppressed from breaking during knitting, the cut end is not torn, and the texture is good.

The present invention is a lace knitted fabric in which a chain knitting structure of a chain knitting yarn in which a plurality of loop-shaped portions are connected in the course direction is formed in a plurality of rows in the wale direction.
The first insertion yarn, which is composed of elastic yarn having elasticity that expands and contracts elastically, is knitted into the chain knitting structure by inserting each loop-shaped portion in the course direction.
A second insertion yarn composed of an elastic yarn having elasticity that expands and contracts elastically, and a part of the plurality of loop-shaped portions is inserted in the course direction and knitted into the chain knitting structure.
A third insertion thread made of an elastic thread having elasticity that expands and contracts elastically.
A parallel running part that is knitted side by side with the second insertion thread by inserting the loop-shaped part of the chain knitting structure in the course direction,
A third insertion yarn having a loop-shaped portion of the chain knitting structure adjacent to one in the wale direction and a crossover portion knitted into the loop-shaped portion of the chain knitting structure adjacent to the other in the wale direction from a predetermined chain knitting structure. Including
The chain knitting yarns constituting each chain knitting structure extend laterally from each chain knitting structure to a chain knitting structure adjacent to one in the wale direction at intervals in the course direction, and the chain knitting is adjacent to the one in the wale direction. It has a laterally extending portion that is hooked on a parallel running portion of the second insertion thread and the third insertion thread that are woven into the tissue.
The first insertion yarn is adhered to the chain knitting yarn at a position where it comes into contact with each loop-shaped portion of the chain knitting yarn constituting each of the plurality of chain knitting structures.
The second insertion yarn is adhered to the chain knitting yarn at a position where it comes into contact with each loop-shaped portion of the chain knitting yarn constituting each of the plurality of chain knitting structures.
The third insertion yarn is a lace knitted fabric characterized in that it is adhered to the chain knitting yarn at a position where it comes into contact with each loop-shaped portion of the chain knitting yarn constituting each of the plurality of chain knitting structures.

Further, in the lace knitted fabric of the present invention, the chain knitting yarn, the second insertion yarn and the third insertion yarn have a core yarn made of a heat-meltable synthetic resin single fiber yarn and a melting temperature higher than that of the core yarn. It is preferable that the composite yarn has a coated yarn made of a long fiber yarn made of a highly heat-meltable synthetic resin.

Further, in the lace knitted fabric of the present invention, the loop-shaped portion has a first loop-shaped portion formed of a needle loop and a second loop-shaped portion formed of a sinker loop.
The laterally extending portion is preferably the second loop-shaped portion.

Further, in the lace knitted fabric of the present invention, it is preferable that the second insertion yarn and the third insertion yarn are formed to have the same thickness by using the same material.

According to the present invention, the laterally stretched portion of the chain knitting yarn constituting each chain knitting structure is adjacent to one of the wale directions in a state of being laterally stretched from each chain knitting structure to the chain knitting structure adjacent to one of the wale directions. Since the chain knitting yarn of the laterally extending portion is hooked on the parallel running portion of the second insertion yarn and the third insertion yarn knitted in the chain knitting structure, the chain knitting yarn of the laterally extending portion is separated from the second insertion yarn and the third insertion yarn. It is in a state of losing the tensile force received. By the tension balance of each yarn, it is possible to prevent the chain knitting yarn of the Ray precursor from being cut during the production of the lace knitted fabric, and the lace knitted fabric has a good texture without tearing of the cut end. be able to. Alternatively, at the time of production, the structure of the laterally stretched portion can prevent the fused portion of the second insertion thread and the third insertion thread from peeling off or coming off. Further, since the tensile force received by the chain knitting yarn in the laterally stretched portion is relaxed, a lace knitted fabric having excellent elasticity can be realized. Further, since the laterally stretched portion is hooked on the two insertion yarns of the second insertion yarn and the third insertion yarn, the laterally stretched portion can be reliably laterally stretched to the chain knitting structure adjacent to one of the wale directions. can.

Further, according to the present invention, the surface of the coating yarn is not covered with the melt of the core yarn, and when the lace knitted fabric and the knitted lace product manufactured by using the lace knitted fabric are brought into contact with the skin, the core yarn The bulky coating yarn comes into contact with the skin without the melt of the above coming into contact with the skin.

Further, according to the present invention, since the laterally extending portion is a second loop-shaped portion formed of a sinker loop and not a first loop-shaped portion formed of a needle loop, the stitches of the lace knitted fabric are deformed. Can be suppressed.

Further, according to the present invention, since the second insertion thread and the third insertion thread are formed to have the same thickness by using the same material, the second insertion thread and the third insertion thread are used. , Can be easily fused to the chain knitting yarn at a specific temperature.

Objectives, features, and advantages of the present invention will become clearer from the detailed description and drawings below.
It is a knitting organization chart which shows a part of the lace knitted fabric 20 in which the chain knitting yarn 21 which is one Embodiment of this invention is stretched laterally. It is a chain knitting organization chart which shows the lace knitted fabric 20 by omitting the yarn other than the chain knitting yarn 21, the first insertion yarn 22, the second insertion yarn 23, and the third insertion yarn 24. It is a run stop organization chart which shows the lace knitted fabric 20 by omitting the yarn other than the chain knitting yarn 21. It is a front view which shows a part of the chain knitting yarn 21 before knitting. It is a front view which shows a part of the chain knitting yarn 21 which knits a lace knitted fabric 20. It is a flowchart which shows the manufacturing process of the lace knitted fabric 20 of this embodiment.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a knitting structure diagram showing a part of the lace knitted fabric 20 according to the embodiment of the present invention, in which the chain knitting yarn 21 constituting the chain knitting structure 19a is adjacent to one of the chain knitting structures 19a in the wale direction. The chain knitted structure 19b shows a laterally elongated state. FIG. 2 is a knitting structure diagram of a chain knitting structure 19 showing a lace knitted fabric 20 by omitting threads other than the chain knitting thread 21, the second insertion thread 23, and the third insertion thread 24. FIG. 3 is a knitting structure diagram of a run stop structure 28 showing a lace knitted fabric 20 by omitting threads other than the chain knitting thread 21. These FIGS. 1 to 3 schematically show the knitting structure for easy understanding, and the actual knitting structure of the lace knitted fabric 20 is the first loop-shaped portion 25 and the second loop. The radius of curvature of the shaped portion 26 is small, and the chain knitting yarn 21, the first insertion yarn 22, the second insertion yarn 23, and the third insertion yarn 24 are in a state of being extremely close to each other or in contact with each other. For ease of illustration, FIG. 2 is shown by a solid line in which the thicknesses of the chain knitting yarn 21, the second insertion yarn 23, and the third insertion yarn 24 are omitted, and FIG. 3 is the chain knitting yarn 21. It is shown by a solid line with the thickness omitted.

In the present embodiment, the knitted fabric knitted by the chain knitting yarn 21, the first insertion yarn 22, the second insertion yarn 23, and the third insertion yarn 24 is referred to as a precursor knitted fabric. The lace knitted fabric 20 is a heated precursor knitted fabric. Further, a product manufactured by using the lace knitted fabric 20 is referred to as a knitted lace product.

The lace knitted fabric 20 of the present embodiment is a warp knitted fabric, which is a Russell knitted fabric knitted with Russell, and is a stretch knitted fabric having elasticity. The lace knitted fabric 20 is knitted by a yarn including a chain knitting yarn 21, a first insertion yarn 22, a second insertion yarn 23, and a third insertion yarn 24.

As shown in FIG. 1, in the lace knitted fabric 20, a plurality of first loop-shaped portions 25 and second loop-shaped portions 26 are connected in the course direction to form a chain knitting structure 19 of Russell knitting, and a chain knitting yarn 21 and elastic. The first insertion thread 22 is knitted into the chain knitting structure 19 in the course direction C to give the chain knitting structure 19 elasticity in the course direction C, and elastically expands and contracts. Each second loop-shaped portion 26 of the chain knitting yarn 21 which is composed of elastic yarn having elasticity to form one chain knitting structure 19a and the chain knitting yarn 21 which forms the chain knitting structure 19b adjacent to the wale direction W. It is provided with a second insertion yarn 23 and a third insertion yarn 24 which are wound around and give each chain knitting structure 19 elasticity in the wale direction W. The chain knitting yarn 21 may be referred to as a warp yarn or a ground knitting yarn. The first insertion thread 22 is also referred to as an elastic thread, and the second insertion thread 23 and the third insertion thread 24 are also referred to as a weft thread.

Further, in the lace knitted fabric 20, the chain knitting yarn 21 and the first insertion yarn 22 are adhered to each other at the plurality of first contact portions 50 by utilizing the heat fusion property of each other. The chain knitting yarn 21 and the first insertion yarn 22 are adhered to each other at almost all the first contact portions 50. In the lace knitted fabric 20, a plurality of second contact portions 55 of the chain knitting yarn 21 and the second insertion yarn 23 are bonded to each other by utilizing the heat fusion property of each other. Further, almost all the third contact portions 56 are adhered to the chain knitting yarn 21 and the third insertion yarn 24.

As shown in FIG. 2, the chain knitting yarn 21 is chain-knitted to form a first loop-shaped portion 25 and a second loop-shaped portion 26. The first loop-shaped portion 25 and the second loop-shaped portion 26 are alternately connected and formed in a plurality of stages in the course direction C. Here, the first loop-shaped portion 25 may be referred to as a needle loop, and the second loop-shaped portion 26 may be referred to as a sinker loop. The chain knitting structure 19 is formed by alternately connecting the first loop-shaped portion 25 and the second loop-shaped portion 26 and extending in the course direction C. A plurality of chain knitted structures 19 are formed side by side in the wale direction W, and when they are connected to each other, a lace knitted fabric 20, in other words, a chain stitch structure is formed. Further, the chain knitting yarn 21 forms not only the chain knitting structure 19 but also a run stop structure 28 for preventing transmission lines shown in FIG. 3, a tulle structure composed of a hexagonal net, and the like as a ground structure. You can also do it. The portion where the chain knitting yarn 21 extends laterally is referred to as a laterally extending portion 42.

Each of the first loop-shaped portions 25 is formed in a roughly U-shape, and is arranged roughly side by side in a predetermined course direction C and a wale direction W orthogonal to the course direction C. Further, each first loop-shaped portion 25 opens in the front stage C1 in the course direction, which is one of the course directions C. The first loop-shaped portions 25 are lined up in a row in the wale direction W to form a course, and the first loop-shaped portions 25 are lined up in a row in the course direction C to form a wale.

The second loop-shaped portion 26 connects the first loop-shaped portions 25 arranged in the course direction C. For example, pay attention to one second loop-shaped portion 26. One end of the second loop-shaped portion 26 of interest is connected to the end of the first loop-shaped portion 25 in the same stage as the second loop-shaped portion 26. The second loop-shaped portion 26 inserts the first loop-shaped portion 25 of the course direction front stage C1 of the second loop-shaped portion 26 from one side to the other side as it goes from one end to the other end, and the course direction rear stage C2. The first loop-shaped portion 25 in the same stage as the second loop-shaped portion 26 is inserted from the other side to one side, extends to the rear stage C2 in the course direction, and extends to the rear stage C2 in the course direction of the second loop-shaped portion 26. It is connected to the end of the first loop-shaped portion 25 of the above.

In this way, the first loop-shaped portion 25 and the second loop-shaped portion 26 are connected in a chain shape to form a wale extending in the course direction C. Each insertion thread such as the first insertion thread 22, the second insertion thread 23, and the third insertion thread 24 is knitted into the wale by being sandwiched between the first loop-shaped portion 25 and the second loop-shaped portion 26. Is done.

In the present embodiment, the course direction C is the vertical direction of the knitted fabric and means the lace knitting direction. Further, the wale direction W is the lateral direction of the knitted fabric, and means the direction in which the knitted fabric intersects with the lace knitting direction. A plurality of the first loop-shaped portions 25 are arranged side by side in the course direction C and the wale direction W. Further, the plurality of first loop-shaped portions 25 arranged in the course direction C and the wale direction W are arranged roughly in contact with a predetermined virtual plane. In this case, each knitting yarn knitted into the chain knitting structure 19 such as the first insertion yarn 22, the second insertion yarn 23, and the third insertion yarn 24 is arranged on one side with respect to the virtual plane.

The direction in which the first insertion thread 22, the second insertion thread 23, and the third insertion thread 24 are arranged with respect to the virtual plane extending along the first loop-shaped portion 25 is referred to as the front direction Z1, and the first insertion thread is referred to as the front direction Z1. 22, the direction in which the virtual plane is arranged with respect to the second insertion thread 23 and the third insertion thread 24 is referred to as the back direction Z2. In FIGS. 1 and 2, in the thickness direction Z perpendicular to the paper surface, the direction away from the paper surface is the front direction Z1, and in the direction perpendicular to the paper surface, the direction away from the paper surface is the back direction Z2.

On the surface of the lace knitted fabric 20 in the front direction Z1, the first loop-shaped portion 25 is hidden by the knitting yarns such as the first insertion yarn 22, the second insertion yarn 23, and the third insertion yarn 24. Therefore, the surface of the lace knitted fabric 20 in the front direction Z1 has a clearer pattern and the lace pattern formed on the lace knitted fabric 20 than the surface in the back direction Z2.

For example, in the second loop-shaped portion 26, the first loop-shaped portion 25 of the course direction front stage C1 of the second loop-shaped portion 26 is inserted in the front direction Z1 and the second loop-shaped portion 26 is in the same stage in the course direction. The first loop-shaped portion 25 is inserted in the back direction Z2 and is connected to the first loop-shaped portion 25 in the rear stage C2 in the course direction.

The second insertion thread 23 and the third insertion thread 24 are threads for forming a lace pattern on the chain knitting structure 19. The second insertion thread 23 and the third insertion thread 24 are knitted into the wales adjacent to the wale direction W, respectively, thereby connecting the two wales adjacent to the wale direction W. As shown in FIG. 1, the second insertion thread 23 and the third insertion thread 24 have a transverse portion 43 extending from one wale adjacent to the wale direction W to the other wale, and a portion knitted into the wale. .. The second insertion thread 23 and the third insertion thread 24 are knitted over the entire length of the wale.

The two crossover portions 43 arranged in the course direction C and the two wales to which the crossover portions 43 are connected form a through hole 29 to be inserted in the thickness direction of the knitted fabric. By selectively arranging the lateral portion 43 of the second insertion thread 23 and the third insertion thread 24, the shape and arrangement of the through holes 29 are adjusted. As a result, the lace knitted fabric 20 can be formed with a lace pattern represented by the arrangement and shape of the through holes 29. Further, the through hole 29 can be filled with a pattern thread other than the second insertion thread 23 and the third insertion thread 24 to form a pattern pattern. The pattern pattern is formed by the shape and arrangement of a handle portion in which the amount of threads arranged per unit area is dense and a base portion in which the amount of threads arranged per unit area is sparse. The lace knitted fabric 20 having such a pattern is used as a fabric for knitted lace products such as women's underwear.

The second insertion thread 23 and the third insertion thread 24 extend the region in the front direction Z1 from the first loop-shaped portion 25. The second insertion thread 23 and the third insertion thread 24 are inserted between the first loop-shaped portion 25 and the second loop-shaped portion 26 and extend in the wale direction W. Further, in the present embodiment, a plurality of second insertion threads 23 and a plurality of third insertion threads 24 are knitted into the chain knitting structure 19, and each of the second insertion threads 23 and the third insertion threads 24 is in the wale direction W. It is woven side by side. The position at which each of the second insertion thread 23 and the third insertion thread 24 is knitted is appropriately selected according to the lace pattern to be formed on the lace knitted fabric 20.

The first insertion yarn 22 is realized by a yarn having a melting point temperature equivalent to that of the chain knitting yarn 21, the second insertion yarn 23, and the third insertion yarn 24. In the present embodiment, a yarn that partially melts in the heated state in the heating step performed after the lace knitted fabric 20 is knitted is used. The first insertion yarn 22 is also used to prevent the chain knitting yarn 21, the second insertion yarn 23, and the third insertion yarn 24 from fraying. In the present embodiment, the first insertion yarn 22 is realized by an uncoated yarn, that is, a bare yarn not coated by the coated yarn, a so-called bare yarn, and the melting temperature thereof is realized by a polyurethane elastic yarn of about 200 ° C. or higher and 250 ° C. or lower. Will be done. The first insertion thread 22 is knitted into the chain knitting structure 19 in a state of being stretched with respect to the natural state. Since the polyurethane core yarns used for the chain knitting yarn 21, the second insertion yarn 23 and the third insertion yarn 24 have a lower melting point than the polyurethane yarn used for the first insertion yarn 22, they melt and the first insertion yarn 22 By fusing with, fraying can be prevented.

The first insertion thread 22 extends along the wale and is knitted by inserting all the second loop-shaped portions 26 constituting the wale. Therefore, in the chain knitting structure 19, the first insertion yarn 22 is formed in both the base portion where the amount of yarn per unit area is sparse and the handle portion where the amount of yarn per unit area is denser than that of the base portion. Is woven. Further, in the present embodiment, the lace knitted fabric 20 has a plurality of first insertion threads 22, and each first insertion thread 22 is knitted for each wale. In this way, the first insertion thread 22 is knitted over the entire region of the chain knitting structure 19.

The second insertion thread 23 and the third insertion thread 24 extend the region in the front direction Z1 from the first loop-shaped portion 25, and extend the region in the back direction Z2 from the second loop-shaped portion 26. The first insertion thread 22 advances in a zigzag manner as it advances in the course direction C along the corresponding wale. For example, when the first insertion thread 22 passes between the first loop-shaped portion 25 and the second loop-shaped portion 26 of interest from one W1 in the wale direction to the other W2 in the wale direction, the first loop-shaped portion 25 of interest It passes between the first loop-shaped portion 25 and the second loop-shaped portion 26 of the latter stage C2 in the course direction from the other W2 in the wale direction to the one W1 in the wale direction. Such each course hooking of the first insertion thread 22 may be realized by a structure different from the above structure.

Immediately after knitting, the first insertion thread 22 extends the region in the front direction Z1 from the first loop-shaped portion 25, and is in the back direction Z2 of the lace knitted fabric 20 from the second insertion thread 23 and the third insertion thread 24. Extend the area. Therefore, in the region where the first insertion thread 22, the second insertion thread 23, and the third insertion thread 24 are inserted between the same first loop-shaped portion 25 and the second loop-shaped portion 26, the first insertion thread 22 is It is inserted between the first loop-shaped portion 25 and the second insertion thread 23 and the third insertion thread 24. Further, the second insertion thread 23 and the third insertion thread 24 are inserted between the first insertion thread 22 and the second loop-shaped portion 26. In this case, since the chain knitting yarn 21 is stretched in the course direction C, the radius of curvature of the first loop-shaped portion 25 and the second loop-shaped portion 26 becomes smaller, and the first insertion yarn 22 is the second insertion yarn 23. And is arranged between the third insertion thread 24 and the first loop-shaped portion 25, and comes into contact with the second insertion thread 23, the third insertion thread 24, and the first loop-shaped portion 25.

In the present embodiment, in the region where the first insertion thread 22, the second insertion thread 23, and the third insertion thread 24 are inserted between the same first loop-shaped portion 25 and the second loop-shaped portion 26, For example, the first insertion thread 22, the second insertion thread 23, and the third insertion thread 24 intersect each other and pass through the first loop-shaped portion 25 and the second loop-shaped portion 26. Specifically, the first insertion thread 22 is in the same stage as the first loop-shaped portion 25 of interest from the side where the first loop-shaped portion 25 of interest is connected to the second loop-shaped portion 26 of the front stage C1 in the course direction. It passes through the second loop-shaped portion 26 of the above.

In the present embodiment, the third insertion thread 24 is knitted side by side with the second insertion thread 23 by inserting the first loop-shaped portion 25 and the second loop-shaped portion 26 of the chain knitting structure 19 in the course direction C. The laterally extending portions 42 of the chain knitting yarns 21 having the parallel running portion L and constituting the chain knitting structure 19a are chain knitted adjacent to W1 in the wale direction from the chain knitting structure 19a at intervals in the course direction. It extends laterally to the structure 19b and is hooked on the parallel running portion L of the second insertion thread 23 and the third insertion thread 24 knitted in the chain knitting structure 19b adjacent to W1 in the wale direction.

A chain knitting portion 42 of the chain knitting yarn 21 constituting the chain knitting structure 19a is stretched laterally from each chain knitting structure 19a to the chain knitting structure 19b adjacent to one of the wale directions, and the chain knitting is adjacent to the chain knitting structure 19a. Since the second insertion thread 23 knitted in the structure 19b and the parallel running portion L of the third insertion thread 24 are hooked to each other, the chain knitting thread 21 of the laterally extending portion 42 is the second insertion thread 23 and the chain knitting thread 21. It is in a state of being defeated by the tensile force received from the third insertion thread 24. By the tension balance of each yarn, it is possible to prevent the chain knitting yarn 21 of the lace precursor from being cut at the time of manufacturing the lace knitted fabric, and the lace knitted fabric has a good texture without tearing of the cut end. can do. Alternatively, at the time of production, the structure of the laterally stretched portion 42 can prevent the fused portions of the second insertion thread 23 and the third insertion thread 24 from peeling off or coming off. Further, since the tensile force received by the chain knitting yarn 21 of the laterally stretched portion 42 is relaxed, a lace knitted fabric having excellent elasticity can be realized. Further, since the laterally stretched portion 42 is hooked on the two insertion yarns of the second insertion yarn 23 and the third insertion yarn 24, the laterally stretched portion 42 is surely attached to the chain knitting structure 19b adjacent to W1 in the wale direction. Can be stretched laterally. Further, the laterally stretched portion 42 of each chain knitting structure 19a does not need to extend to the adjacent chain knitting structure 19b, and is about half the distance from each chain knitting structure 19a to the chain knitting structure 19b adjacent to W1 in the wale direction. It is effective depending on the degree of growth.

The loop-shaped portion 27 of the chain knitting structure 19 has a first loop-shaped portion 25 formed of a needle loop and a second loop-shaped portion 26 formed of a sinker loop, and the laterally extending portion 42 includes a laterally extending portion 42. Since it is the second loop-shaped portion 46, the first loop-shaped portion 25 formed by the needle loop is pulled by the second insertion thread 23 and the third insertion thread 24 and is not deformed, and the lace knitted fabric 20 is used. It is possible to suppress the deformation of the stitches of.

FIG. 4 is a front view showing a part of the chain knitting yarn 21 before knitting, and FIG. 5 is a front view showing a part of the chain knitting yarn 21 knitting the lace knitted fabric 20. The chain knitting yarn 21 has a shape as shown in FIGS. 1 and 2 when the lace knitted fabric 20 is knitted, but FIG. 5 shows a state in which the chain knitting yarn 21 is linearly extended for easy understanding. Indicated by. The chain knitting yarn 21 is a yarn in which a coating yarn 31 is spirally wound around a core yarn 30 having elasticity. The core yarn 30 is a single fiber yarn (monofilament yarn) made of a thermoplastic synthetic resin, and is made of, for example, polyurethane. The coating yarn 31 is a long fiber yarn (multifilament yarn) composed of a plurality of long fibers made of a synthetic resin, and is made of, for example, polyamide (registered trademark: nylon).

In the state before knitting, the chain knitting yarn 21 is covered with the coating yarn 31 so that the coating yarns 31 come into contact with each other and the core yarn 30 is not exposed as shown in FIG. The chain knitting yarn 21 is knitted in a stretched state as shown in FIG. 5 by utilizing the elasticity of the core yarn 30. In the stretched state of the chain knitting yarn 21, a spiral gap is formed between the coating yarns 31, and the core yarn 30 is exposed from this gap.

The second insertion thread 23 and the third insertion thread 24 are a core thread made of a single fiber thread made of a heat-meltable synthetic resin and a long fiber thread (multifilament thread) made of a plurality of long fibers made of a synthetic resin. Yes, it consists of composite yarns coated with, for example, polyamide (registered trademark: nylon), rayon, polyester and the like. The first insertion thread 22 is a thread also called spandex, which is a long fiber thread (filament thread) made of an elastic material, and is made of, for example, polyurethane.

As described above, since the second insertion thread 23 and the third insertion thread 24 can be formed to have the same thickness by using the same material, the second insertion thread 23 and the third insertion thread 24 can be formed. , Can be easily fused to the chain knitting yarn 21 at a specific temperature.

The core yarn 30 of the chain knitting yarn 21 and the first insertion yarn 22 are both made of polyurethane, but are made of different types of polyurethane from each other, and from the melting temperature (about 200 to 250 ° C.) of the first insertion yarn 22. The melting temperature of the core yarn 30 is low. The melting temperature of the core yarn 30 is about 140 to 190 ° C., which is lower than the melting temperatures of the coating yarn 31, the second insertion yarn 23, the third insertion yarn 24, and the first insertion yarn 22, and has thermoplasticity. As described above, the chain knitting yarn 21 is a yarn containing a core yarn 30 made of a material having a low melting temperature. Further, the core yarn 30 of the second insertion yarn 23 and the third insertion yarn 24 may also have the same or similar melting temperature as the core yarn 30 of the chain knitting yarn 21.

FIG. 6 is a flowchart showing an example of the manufacturing process of the lace knitted fabric 20 of the present embodiment. First, in step a0, the selection of each thread used for knitting the lace knitted fabric 20, the determination of the pattern to be formed on the lace knitted fabric 20, and the design of the knitted fabric for forming the desired knitting structure are completed. When the preparation for knitted fabric knitting is completed, the process proceeds to step a1 and the production of the lace knitted fabric 20 is started.

In step a1 which is a knitted fabric knitting step, a precursor knitted fabric which is a precursor of the lace knitted fabric 20 is knitted by using a knitting machine which is a Russell knitting machine. The knitting machine knits each yarn such as the first insertion yarn 22, the second insertion yarn 23, and the third insertion yarn 24 into the chain knitting yarn 21 according to the knitting order designed in step a0, and is shown in FIG. A precursor knitted fabric having the same knitting structure as the lace knitted fabric 20 is knitted.

In the precursor knitted fabric, the chain knitting yarn 21 and the first insertion yarn 22 have elasticity. The knitting machine executes the knitting operation in a state where the stretchable yarn is stretched. The precursor knitted fabric shrinks after knitting due to the restoring force of the yarn knitted in the stretched state, and such elasticity is substantially maintained up to the lace knitted fabric 20.

In step a2, which is a dyeing step, the precursor knitted fabric knitted in step a1 is dyed, and when the dyeing is completed, the process proceeds to step a3. In step a3, the dyed precursor knitted fabric is heated to a temperature equal to or higher than the melting temperature of the core yarn 30 of the chain knitting yarn 21, and the first insertion yarn 22, the second insertion yarn 23, and the third insertion yarn other than the core yarn 30 are used. 24. The coating yarn 31 is heated to a temperature lower than the melting temperature. In heating the precursor knitted fabric in step a3, the precursor knitted fabric is stretched, and the chain knitting yarn 21 is heated in a stretched state as shown in FIG. As a result, the core yarn 30 of the chain knitting yarn 21 is heated and melted in a partially exposed state. Further, the core yarns of the second insertion yarn 23 and the third insertion yarn 23 may have the same melting temperature as the core yarn 30 of the chain knitting yarn 21.

Therefore, of the first contact portion 50 between the chain knitting yarn 21 and the first insertion yarn 22, the chain knitting yarn 21 is in the first contact portion 50 in which the first insertion yarn 22 is in contact with the exposed portion of the core yarn 30. And the first insertion thread 22 are adhered to each other. Further, among the second contact portions 55 of the chain knitting yarns 21, the chain knitting yarns 21 are adhered to each other at the second contact portion 55 in which the exposed portions of the core yarns 30 are in contact with each other. Due to the characteristics of the coated yarn, the first contact portion 50 and the second contact portion 55 have a shape in which the molten core yarn passes through the most central side of the bent portion, and have the highest probability of adhesion. If the molten core yarn is exposed at a place other than the first contact portion 50 and the second contact portion 55 and is set in contact with other fibers, an adhesive portion may be formed.

Although the core yarn 30 of the chain knitting yarn 21 and the first insertion yarn 22 are different in type, they are both made of polyurethane, so that the core yarn 30 is easily heat-sealed and bonded by melting. Further, the coating yarn 31 of the chain knitting yarn 21 is made of polyamide and is difficult to be adhered to the core yarn 30, but the set temperature and the set time are adjusted so that most of the first contact portion 50 as described above is adhered. By doing so, the core yarn 30 of the chain knitting yarn 21 and the first insertion yarn 22 can be adhered to each other at the first contact portion 50 with an adhesion ratio of about 60 to 90% in the case of the molten core yarn and the expansion / contraction polyurethane yarn. can.

The lace knitted fabric 20 is knitted while stretching the lace knitted fabric 20. When the set elongation is large, the core yarn is exposed more than when the set elongation is small. Although it depends on the elongation setting of the finished product, the lace knitted fabric 20 is knitted while being stretched about 1.5 to 2.5 times the finished product, so that the core yarn 30 is exposed more. However, since the chain knitting yarn 21 (the same applies to the second insertion yarn 23 and the third insertion yarn 24 below) has the coating yarn 31, no matter how large the elongation is set, the core yarn 30 and the first The contact point with the insertion thread 22 is not always 100% adhered. At the contact points between the coating threads 31, the adhesion rate is expected to be further reduced. The second contact portion 55 between the chain knitting yarns 21 and the chain knitting yarn 21 and the second insertion yarn 23, and the third contact portion 56 between the chain knitting yarn 21 and the third insertion yarn 24 are portions where the core yarn 30 is exposed. They are in contact with each other and are bonded with an adhesion rate of about 50 to 80%.

The adhesive ratio means that a plurality of first contact portions 50, second contact portions 55, and third contact portions 56 are randomly selected and observed with a microscope, and the first contact portion 50, the second contact portion 55, and the third contact portion 56 are adhered to the number of the observed contact portions 50, 55, 56. It is a ratio (%) of the number of contact portions 50, 55, 56.

In this way, the precursor knitted fabric is heated to bond a part of the first contact portion 50 between the chain knitting yarn 21 and the first insertion yarn 22, and the chain knitting yarns 21 to each other or the chain knitting yarns 21 and the second. A part of the second contact portion 55 with the insertion yarn 23 is adhered, and further, a part of the third contact portion 56 between the chain knitting yarn 21 and the third insertion yarn 24 is adhered to form the lace knitted fabric 20. , Step a4. In step a4, the formed lace knitted fabric 20 is cut (as it is in the case of a wide width), and in step a5, the manufacturing work of the lace knitted fabric 20 is completed. By heating the precursor knitted fabric in step a2, the core yarn 30 of the chain knitting yarn 21 is melted, and the heating conditions are set so that the characteristic change is prevented including the brittleness of the yarns other than the core yarn 30. .. Further, it is preferable to set the heating conditions for heating the core yarn 30 to a temperature at which the core yarn 30 can maintain its shape as a yarn. Since the first insertion thread 22 is heated only below the melting temperature, the elasticity can be maintained. Therefore, the lace knitted fabric 20 has elasticity.

According to the lace knitted fabric 20 of the present embodiment as described above, the first insertion thread 22 having elasticity is knitted into the chain knitting structure 19 to give elasticity to the chain knitting structure 19, and the chain knitting structure 19 is stretched. It is possible to realize a lace knitted fabric 20 having a property. Further, a part of the first contact portion 50 between the chain knitting yarn 21 and the first insertion yarn 22 is adhered to each other, and one of the second contact portions 55 between the chain knitting yarns 21 and the chain knitting yarn 21 and the second insertion yarn 23. The portions are adhered to each other, and a part of the third contact portion 56 between the chain knitting yarn 21 and the third insertion yarn 24 is adhered to each other, whereby the chain knitting yarn 21 and the first insertion yarn 22 are misaligned and the chain is formed. The knitting yarns 21 or the chain knitting yarns 21 are prevented from being misaligned with the second insertion yarns 23 and the third insertion yarns 24, and are formed by a wale connecting the transverse portion 43 and the transverse portion 43. The deformation of the through hole 29 is prevented. For example, even if an external force caused by a manufacturing process such as sewing or cutting of a lace knitted fabric 20 or an external force caused by a usage state such as wearing or washing acts, deformation of the through hole 29 is prevented and the shape of the through hole 29 is prevented. Is maintained, a lace knitted fabric 20 having a good aesthetic appearance can be obtained, and the excellent aesthetic appearance can be maintained for a long period of time.

The entire lace knitted fabric 20 uses the heat-sealing properties of the chain knitting yarn 21, the first insertion yarn 22, the second insertion yarn 23, and the third insertion yarn 24 to form the chain knitting yarn 21 and the first insertion yarn 22. The chain knitting yarn 21 and the second insertion yarn 23 are adhered, and the chain knitting yarn 21 and the third insertion yarn 24 are adhered to each other. Since it is knitted by the two insertion yarns 23 and the third insertion yarns 24, it is visually and tactilely unified, and the aesthetics and texture are not impaired. Further, since the chain knitting yarn 21 in which the core yarn 30 is covered with the coating yarn 31 is extended and adhered at the exposed portion of the core yarn 30, the surface of the coating yarn 31 is covered with the melt of the core yarn 30. When the lace knitted fabric 20 and the knitted lace product manufactured by using the lace knitted fabric 20 are brought into contact with the skin, the melt of the core yarn 30 does not come into contact with the skin, and the bulky coating yarn 31 is formed. Contact the skin. Since the coating yarn 31 is a collection of a plurality of single fibers (multifilament), a soft and soft feel is obtained, and a good texture is maintained. Here, the texture means a touch, and a good texture means a touch having flexibility and a soft feeling.

Further, the first contact portion 50 between the chain knitting yarn 21 and the first insertion yarn 22, the second contact portion 55 between the chain knitting yarn 21 and the second insertion yarn 23, and the chain knitting yarn 21 and the third insertion yarn 24. Since almost all of the third contact portion 56 is bonded, the chain knitting yarn 21 and the first insertion yarn 22 that are likely to affect the deformation of the through hole 29 in both the course direction C and the wale direction W. It is possible to prevent the misalignment of the chain knitting yarn 21 and the second insertion yarn 23, and the misalignment of the chain knitting yarn 21 and the third insertion yarn 24, and the elasticity and flexibility are impaired. A stretchable lace knitted fabric 20 having a high tensile strength, which is less likely to fray or tear, has a good aesthetic appearance, and has an excellent texture can be obtained.

The heating conditions in step a3, which is the heat setting step described above, are set to heating conditions that melt the core yarn 30 of the chain knitting yarn 21 and prevent changes in characteristics including brittleness of yarns other than the core yarn 30. NS. Further, the heating conditions in the heating step are preferably set to heating conditions for heating the core yarn 30 to a temperature at which the core yarn 30 can maintain its form as a yarn. As a result, the melt of the core yarn 30 does not appear on the surface of the knitted fabric, and it is possible to prevent the core yarn 30 from coming into contact with the skin.

As the heating conditions, for example, a heating temperature and a heating time are set. The minimum melting temperature at which the core yarn 30 melts is defined as B1, and the time until softening when heated at the minimum melting temperature is defined as D1. Further, the lowest characteristic change temperature at which the characteristics of the yarns other than the core yarn 30 change is B2, and the time until the characteristics change when heated at the lowest characteristic change temperature is D2. In this case, in the present embodiment, assuming that the heating temperature in the heating step is B3 and the heating time is D3, B1 <B3 <B2 and D1 <D3 <D2 are set. Further, by setting B3 to a value as close to B1 as possible and D3 to a value as close to D1 as possible, it is possible to easily maintain the shape of the core yarn 30 as a yarn.

In the present embodiment, as the core yarn 30 of the chain knitting yarn 21, a thermoplastic polyurethane elastic yarn of 10 denier or more and 280 denier or less, preferably 10 denier or more and 70 denier or less is used. Further, heat treatment is performed at a heating temperature of 170 ° C. or higher and 195 ° C. or lower for a heating time of 30 sec or higher and 90 sec or lower. As a result, the core yarn 30 can be melted and the residual yarn can be prevented from changing in characteristics. The fineness of the first insertion thread 22 is selected to be, for example, 40 denier or more and 420 denier or less. As the core yarns of the second insertion yarn 23 and the third insertion yarn 24, the same core yarns as those of the core yarn 30 of the chain knitting yarn 21 may be used.

For example, when the heating time is constant and the heating temperature is less than 170 ° C., the adhesive force of the molten core yarn 30 becomes small. Further, if the heating temperature exceeds 195 ° C., it becomes difficult to maintain the shape of the core yarn 30 as a yarn, and the characteristics of the yarn other than the core yarn 30 may change. On the other hand, in the present embodiment, by setting the heating temperature to 170 ° C. or higher and 195 ° C. or lower as described above, it is possible to prevent the above-mentioned problems from occurring.

The thinner the core thread 30, the closer the adhesive portion is to the point contact point and the smaller the core thread 30, and the better the texture. The thicker the core thread 30, the larger the adhesive portion and the poorer the texture. In order to make the core yarn 30 thicker and maintain a good texture, it is conceivable to make the coating yarn 31 thicker, but the chain knitting yarn 21 becomes thicker and the sheer feeling of the lace knitted fabric 20 is impaired. Further, the thinner the core thread 30, the lower the adhesive strength, and the thicker the core thread 30, the higher the adhesive strength. Further, by combining the core yarn 30 and the coating yarn, it is possible to create a texture according to the application. Furthermore, the burst strength can be improved by setting or combining each thread itself to be thick.

Therefore, when the core yarn 30 is a thin yarn of less than 10 denier, there is a problem that the strength becomes too small, and when the core yarn 30 is a thick yarn of more than 140 denier, there is a problem that the texture is impaired. By setting the core yarn 30 to 10 denier or more and 140 denier or less, there is no shortage in strength and a good texture can be obtained. From the same viewpoint, it is preferable that the core yarn 30 is 10 denier or more and 50 denier or less.

Further, since the first contact portion 50, the second contact portion 55 and the third contact portion 56 are adhered to the lace knitted fabric 20 as described above, there is an effect of preventing the yarn from fraying, and the lace knitted fabric 20 has an effect of preventing the fraying of the yarn. The insertion threads 23 and 24 are less likely to come off due to the synergistic effect of the laterally stretched portion with respect to tension. Therefore, for example, the lace knitted fabric 20 can be cut into an arbitrary shape so as to be called a motif cut or a free cut. Therefore, it has high elasticity and morphological stability in both the wale direction W and the course direction C, and can be three-dimensionally molded by molding or the like.

The lace knitted fabric 20 manufactured in this way is molded into, for example, 180 ° C., cut into individual processed products, and manufactured in step a5 in order to obtain a required three-dimensional shape such as women's underwear in the cutting step a4. To finish.

The above-described embodiment is merely an example of the present invention, and the configuration can be changed. For example, the knitting structure, the twisting method, the material of the chain knitting yarn 21, the first insertion yarn 22, the second insertion yarn 23, the third insertion yarn 24, the degree of elongation of the laterally stretched portion 42, and the like can be appropriately changed.

The present invention can be practiced in various other forms without departing from its spirit or key features. Therefore, the above-described embodiment is merely an example in all respects, and the scope of the present invention is shown in the claims and is not bound by the text of the specification. Furthermore, all modifications and modifications that fall within the scope of the claims are within the scope of the present invention.

19, 19a, 19b Chain knitting structure 20 Lace knitting fabric 21 Chain knitting yarn 22 First insertion yarn 23 Second insertion yarn 24 Third insertion yarn 25 First loop-shaped part 26 Second loop-shaped part 27 Loop-shaped part 28 Run stop Tissue 29 Through hole 30 Core thread 31 Coating thread 42 Lateral extension part 43 Lateral crossing part 50 First contact part 55 Second contact part 56 Third contact part C Course direction W Wale direction L Parallel running part

Claims (4)

A lace knitted fabric in which a chain knitting structure of a chain knitting yarn in which a plurality of loop-shaped portions are connected in the course direction is formed in a plurality of rows in the wale direction.
The first insertion yarn, which is composed of elastic yarn having elasticity that expands and contracts elastically, is knitted into the chain knitting structure by inserting each loop-shaped portion in the course direction.
A second insertion yarn composed of an elastic yarn having elasticity that expands and contracts elastically, and a part of the plurality of loop-shaped portions is inserted in the course direction and knitted into the chain knitting structure.
A third insertion thread made of an elastic thread having elasticity that expands and contracts elastically.
A parallel running part that is knitted side by side with the second insertion thread by inserting the loop-shaped part of the chain knitting structure in the course direction,
A third insertion yarn having a loop-shaped portion of the chain knitting structure adjacent to one in the wale direction and a crossover portion knitted into the loop-shaped portion of the chain knitting structure adjacent to the other in the wale direction from a predetermined chain knitting structure. Including
The chain knitting yarns constituting each chain knitting structure extend laterally from each chain knitting structure to a chain knitting structure adjacent to one in the wale direction at intervals in the course direction, and the chain knitting is adjacent to the one in the wale direction. It has a laterally extending portion that is hooked on a parallel running portion of the second insertion thread and the third insertion thread that are woven into the tissue.
The first insertion yarn is adhered to the chain knitting yarn at a position where it comes into contact with each loop-shaped portion of the chain knitting yarn constituting each of the plurality of chain knitting structures.
The second insertion yarn is adhered to the chain knitting yarn at a position where it comes into contact with each loop-shaped portion of the chain knitting yarn constituting each of the plurality of chain knitting structures.
The third insertion yarn is a lace knitted fabric characterized in that it is adhered to the chain knitting yarn at a position where it comes into contact with each loop-shaped portion of the chain knitting yarn constituting each of the plurality of chain knitting structures. The chain knitting yarn, the second insertion yarn, and the third insertion yarn are a core yarn made of a single fiber yarn made of a heat-meltable synthetic resin and a length made of a heat-meltable synthetic resin having a melting temperature higher than that of the core yarn. The lace knitted fabric according to claim 1, wherein the coated yarn is made of a fiber yarn and is a composite yarn. The loop-shaped portion has a first loop-shaped portion formed of a needle loop and a second loop-shaped portion formed of a sinker loop.
The lace knitted fabric according to claim 1 or 2, wherein the second laterally stretched portion is the second loop-shaped portion. The lace knitting according to any one of claims 1 to 3, wherein the second insertion thread and the third insertion thread are formed of the same material and having the same thickness. Ground.

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