JP2014091888A - Uneven stretchable tricot knitted fabric and method for manufacturing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a novel uneven stretchable tricot knitted fabric which is improved in wear feeling by minimizing parts in close contact with a body while having high stretchability so as to fit the body, and which has air layers formed between the body and the fabric and in the fabric itself, thereby enabling a heat insulation effect to be obtained.SOLUTION: According to the present invention, a stretchable tricot knitted fabric is knitted by using non-stretchable knitting yarns and stretchable knitting yarns. The non-stretchable knitting yarns are divided into groups each comprising required number thereof. The delivery lengths of the non-stretchable knitting yarns in the groups adjacent to each other are alternately increased and decreased in a repeated manner, thereby providing protrusions F in a checkered pattern on a surface. The protrusions F prevent the surface from coming into close contact with a body V of a wearer, and air layers A1 and A2 are formed within the protrusions F and between the body V and the fabric, thereby providing a heat insulation effect.

Description

  The present invention relates to a tricot knitted fabric having elasticity, and more specifically, a convex portion is finely arranged on the surface to prevent the surface from coming into close contact with the wearer's body and between the convex portion and the wearer's body. The present invention relates to a concavo-convex stretchable tricot knitted fabric that can form an air layer and obtain a heat insulation effect.

  Tricot knitted fabric is one of the materials used for various fashion clothing and sports clothing. Tricot knitted fabrics are classified as warp knitted fabrics, and can be thin and lightweight due to their organizational structure, and are widely used as swimwear and women's innerwear due to their advantages.

Recently, in addition to being thin and lightweight, high stretchability is required, and a tricot knitted fabric having high stretchability has been developed and is widely used.
The features of this highly stretchable tricot knitted fabric are thin, light weight, smooth surface, and sufficient fit to the body.

For imparting high stretchability, for example, as shown in Patent Document 1, a non-elastic yarn such as nylon and an elastic yarn such as polyurethane yarn are knitted together in the same structure to obtain a high stretch warp knitted fabric. Yes.
A highly stretchable tricot knitted fabric has been proposed in which the feeding length of the non-elastic yarn is made longer than that of the elastic yarn to obtain a covering effect, a beautiful knitted surface, and a high-stretch tricot knitted fabric that cannot be understood even by cutting.

  Further, Patent Document 2 proposes a tricot knitted fabric of 28 gauge or more having a gloss feeling, a thin fabric and a stretch property excellent in windproof properties. Polyurethane yarn is used as the elastic yarn, and polyester yarn is used as the inelastic yarn.

  Patent Document 3 proposes a stretchable tricot knitted fabric that can be prevented from being unwound when it is cut using an inelastic yarn, an elastic yarn, and a heat-sealing yarn.

  Furthermore, in Patent Document 4, in order to obtain further high stretchability, only a high elastic yarn such as polyurethane yarn is used as a knitting yarn, and the sum of elongation in the wale direction and the course direction is 600% or more. Knitted fabric has been proposed.

  Thus, many highly stretchable tricot knitted fabrics have been proposed and used in fields such as sports clothing and inner clothing. Each of these highly stretchable tricot knitted fabrics has a very simple structure, is thin, lightweight, has a smooth surface, has a beautiful gloss, and has a characteristic of fitting to the body.

JP 2003-201654 A Patent No. 4427709 JP 2008-240183 A JP 2012-144836

  As described above, many proposals have been made for highly stretchable tricot knitted fabrics. However, these high-stretch tricot knitted fabrics have demonstrated the advantages of being thin, lightweight, smooth on the surface, and having good fit as materials for inner garments and sports garments. Now that diversification has become more diversified, there have been additional functional requirements to be solved.

It is a contradictory demand to maintain a thin, lightweight and highly stretchable fit while reducing the area touching the body as much as possible and obtaining a good wearing feeling.
Moreover, it is a request | requirement of making an air layer between a body and a raw material and obtaining the heat insulation effect, maintaining the advantage of the conventional highly elastic tricot knitted fabric.

Among the above requirements, the requirement to reduce the area touching the body is that the highly stretchable tricot knitted fabric is good due to its high stretchability, for example, when it is used for women's inner clothing, the material sometimes adheres to the skin Comfort can be obtained, but sometimes close contact can be uncomfortable.
For example, it may be uncomfortable for the inner garment to touch the skin when it is muggy and sweaty.

Moreover, the conventional highly stretchable tricot knitted fabric is thin, and for example, when the inner garment is in close contact with the skin due to its good fit, there is a problem that the outside air temperature is directly transmitted to the skin.
This is because if the fit is too high, an air layer is not formed between the skin and the inner garment, and the heat insulating effect is not exhibited.
Thermal insulation is a necessary function both in cold and hot seasons.
The air layer has an effect of blocking cold air when it is cold and blocking warm air when it is hot.
Especially when it is cold, it has the effect of maintaining a warm air layer and maintaining a pleasant warmth.
And moderate air permeability is also required.

  Looking at the prior art from the viewpoint of such requirements, the stretchable tricot knitted fabrics in Patent Documents 1 to 4 have all the advantages of sufficient stretchability, thinness, light weight, and smooth and beautiful surface. However, there are problems to be solved such as being in close contact with the body and not considering the formation of an air layer.

The present invention has been made against the background of the above circumstances.
That is, the object of the present invention is to improve the feeling of wearing by reducing the portion that is in close contact with the body as much as possible while having high stretchability to fit the body. An object of the present invention is to provide an unprecedented highly stretchable tricot knitted fabric capable of forming an air layer between and fabric itself.

  As a result of earnest and research in order to solve the above problems, the inventors knitted a stretchable tricot knitted fabric with a non-stretchable knitting yarn and a stretchable knitting yarn. Divide and repeat increasing / decreasing the feed length of the non-stretchable knitting yarns in adjacent segments to give a checkered convex surface on the surface, and the surface is in close contact with the wearer's body In addition, a concavo-convex stretchable tricot knitted fabric has been developed which has an insulating effect by forming an air layer in the convex part or between the body and the fabric.

  That is, according to the present invention, (1) the sinker loop of the non-stretchable knitting yarn is positioned outside the sinker loop of the stretchable knitting yarn, and the non-stretchable knitting yarn and the stretchable knitting yarn are each knitted with a knitted structure. A stretch tricot knitted fabric, in which non-stretchable knitting yarns are divided into a plurality of required numbers, and within each section, the number of non-stretchable knitting yarn sinker loops over the required number of courses for each required number of courses. A convex portion is formed by the swelling of the sinker loop by increasing the length as compared with the length of the sinker loop in the required number of course intervals and the contraction force of the stretchable knitting yarn positioned below the sinker loop. In addition, the present invention resides in an uneven stretchable tricot knitted fabric having protrusions and depressions on the surface, in which protrusions in adjacent sections are alternately formed, and the protrusions are arranged in a checkered pattern.

  That is, according to the present invention, (2) the braided structure of the non-stretchable knitting yarn is a cord structure (1-0 / 2-3), and the braided structure of the stretchable knitting yarn is a denby structure (1-2 / 1-0). It exists in the uneven | corrugated stretchable tricot knitted fabric of the said (1) description.

  That is, in the present invention, (3), the required plural number is 3 to 8, the required course number interval in the section is 6 to 14 courses, and the required course number is 6 to 14 courses ( 1) It exists in the uneven stretchable tricot knitted fabric described in the above.

  That is, the present invention resides in (4) the concavo-convex stretchable tricot knitted fabric according to the above (1), wherein the convex portions arranged in a checkered pattern have the same size and the same shape.

  That is, the present invention resides in (5) the uneven stretchable tricot knitted fabric according to the above (1), wherein the non-stretchable knitting yarn is a synthetic fiber of 8 to 84 dtex, and the stretchable knitting yarn is a polyurethane yarn of 8 to 78 dtex. .

  That is, according to the present invention, (6) when knitting the non-stretchable knitting yarn and the stretchable knitting yarn with a knitted structure, the sinker loop by the non-stretchable knitting yarn is knitted outside the sinker loop by the stretchable knitting yarn and non-stretchable Divide the knitting yarn into the required number of yarns, and increase the delivery length of the non-stretchable knitting yarn in each division over the required number of courses at intervals of the required number of courses compared to the delivery length at the required number of courses. Knitting and expanding the sinker loops of the non-stretchable knitting yarn for the required number of courses to the outside and forming a convex portion by the shrinking action of the stretchable knitting yarn located below the non-stretchable knitting yarn The present invention resides in a method for knitting a concavo-convex stretchable tricot knitted fabric that forms irregularities on the surface.

  That is, the present invention relates to (7), the convex / concave expansion / contraction of (6) above, wherein the convex portions are formed alternately on the surface for each section, and the convex portions are arranged in a checkered pattern to form irregularities on the surface. It exists in the knitting method of the sex tricot knitted fabric.

  That is, according to the present invention, (8) the unevenness according to (6), wherein the feed length increased over the required number of courses is in the range of 15% to 30% increase compared to the feed length at the required course number interval. It exists in the knitting method of an elastic tricot knitted fabric.

  In addition, as long as the objective of this invention is followed, the structure which combined said (1)-(8) suitably is also employable.

The uneven stretchable tricot knitted fabric of the present invention is knitted with a non-stretchable knitting yarn and a stretchable knitting yarn, and maintains a high stretchability that fits the body, while the surface has convex portions arranged in a checkered pattern. Since this is used for, for example, inner garments, contact with the body is close to point contact, and an extremely good wearing feeling can be obtained without being in close contact.
Moreover, an air layer is formed in the convex part or between the concave and convex parts and the body, and a heat insulating effect is obtained, which has the advantage of being warm in winter and cool in summer.

  And the uneven stretchable tricot knitted fabric of the present invention can freely design and set the number of sections for separating the non-stretchable knitting yarn, the feed length, the number of courses for changing the feed length, etc. There is an advantage that the length, the height, etc. can always be reliably reproduced, and the product development according to various demands of consumers is possible.

FIG. 1 is an explanatory diagram (partially omitted) of a knitting machine of a tricot machine. FIG. 2 is an organization chart of a half organization. FIG. 3 is an explanatory diagram of the organization knitting in which only the cord organization of the half organization is described and the threading state of the cord L1 and the cord L2 to the guides G1 and G2 is shown. FIG. 4 is a schematic surface view showing a state in which convex portions are arranged in a checkered pattern. FIG. 5 is a cross-sectional explanatory view of a concavo-convex stretchable tricot knitted fabric. FIG. 6 is a wearing cross-sectional explanatory view showing a contact state between the uneven stretchable tricot knitted fabric and the wearer's skin. FIG. 7 is a schematic surface view (partially omitted) of the concavo-convex stretchable tricot knitted fabric K in which convex portions F close to a substantially square are arranged in a checkered pattern. FIG. 8 is a schematic view (partially omitted) of a surface of an uneven stretchable tricot knitted fabric in which a portion of constant feed crosses to form a lattice shape.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings as necessary.

(First embodiment)
In the present embodiment, the tricot machine M (28 gauge) shown in the knitting machine explanatory diagram (partially omitted) in FIG. 1 is used.
Here, the gauge means the number of needles N set between 1 inch.
It has three ribs L1, L2, and L3, and three beam shafts R1, R2, and R3 are provided on the machine.
Beams B1, B2, and B3 are set on the respective beam shafts R1, R2, and R3, and the knitting yarn Y is wound thereon.

A knitting yarn Y1 is wound around the beam B1, and the beam B1 is knitted by being guided by the needle N through the thread L1. A knitting yarn Y2 is wound around the beam B2, and is knitted by being guided by the needle N through the thread L2.
Then, the knitting yarn Y3 wound around the beam B3 is knitted while being guided by the needle N through the thread L3.
The guides G1, G2, and G3 are respectively attached to the ribs L1, L2, and L3 at a density of 28 sheets per inch as in the tricot gauge.

Polyester yarn 8 to 84 dtex, which is a non-expandable knitting yarn, is used for the knitting yarn Y1, polyester yarn 8 to 84 dtex, which is also a non-expandable knitting yarn, is used for the knitting yarn Y2, and an elastic knitting yarn is used for the knitting yarn Y3. Certain polyurethane yarns 8 to 78 dtex are used.
In the present embodiment, the knitting yarn Y1 and the knitting yarn Y2 are both of the same standard.
Here, the non-stretchable knitting yarn refers to a knitting yarn that has a certain elasticity as a synthetic fiber such as a polyester yarn but does not have high stretchability such as a polyurethane yarn.
The stretch knitting yarn T3 refers to a knitting yarn having high stretchability such as a polyurethane yarn.

By the tricot machine M thus prepared, knitting is performed with the half structure H which is the knitting structure shown in the organization chart of FIG.
Here, the braided tissue is a tissue that forms the needle loop NL, and is a term relative to the inserted tissue that does not form the needle loop NL.
The half structure is formed of a code structure C (1-0 / 2-3) and a Denby structure D (1-2 / 1-0). Here, the code structure C (1-0 / 2-3) knitting Denby organization D (1-2 / 1-0) with OSA L3.

In order to facilitate the explanation of the organization chart of FIG. 2, only the code organization C (1-0 / 2-3) is shown in the organization explanation diagram of FIG.
The knitting will be described based on FIG. The knitting yarn Y is divided into a required number of yarns within a range of 3 to 8.
For example, in this embodiment, it is divided into 5, 3, 5, 3,.
Of these, the five knitting yarns Y are classified into two knitting yarns Y1, and the three knitting yarns Y are classified as two knitting yarns Y2.
The knitting yarn Y1 thus divided is wound around the beam B1 and knitted with the Lisa, and the knitting yarn Y2 is wound around the beam B2 and knitted with the lumbar L2.

For this purpose, the knitting yarn Y1 is threaded through the guide G1 of the rib L1 with 5 in 3 out.
“5 in 3 out” means that five knitting yarns are threaded through a row of guides and the next three guides are not threaded.
Then, the knitting yarn Y2 is passed through the guide G2 of the rib L2 with five outs and three inches corresponding to the rib L1.
In the lower frame in FIG. 3, a guide through which a circle is attached and threaded is shown.

Then, both L1 and L2 knitted the code organization C (1-0 / 2-3), and since L1 and L2 complement each other not threaded, The same cord structure C (1-0 / 2-3) as that in a case where all the yarns are threaded through one guide is knitted.
In other words, the two pieces of cloth L1 and L2 play the role of one sheet.

Next, the feeding length at the time of knitting the knitting yarns Y1 and Y2 passed through as described above will be described.
For the knitting yarn Y1, the rotation of the beam shaft R1 is controlled to change the delivery length over the required number of courses at every required number of courses.
The required course number interval is in the range of 6 to 14 courses, and the required course number is in the range of 6 to 14 courses.
For the knitting yarn Y1, for example, 8 courses are knitted with a constant feed length, and the next, for example, 12 course knitting feed length is increased by 15% to 30% from the constant feed length during the previous 8 course knitting. And organize.
And it repeats returning the next 8 courses to the fixed sending length in the case of the previous 8 courses again.

That is, 8 courses are set as a constant feed length, and 12 courses are set as a feed length increased by 20%, for example, and are repeated as constant, increased, constant, increased.
For the knitting yarn Y2, the rotation of the beam shaft R2 is controlled to change the feed length opposite to that of the knitting yarn Y1.
In other words, the feed length is increased by 20% for the 8th course, the next 12 courses are constant, and the next 8 courses are repeatedly increased again to increase the feed length, which is alternately changed from the delivery of the knitting yarn Y1.

By doing so, a portion where the feeding length is increased by 20% is formed as a convex portion F on the knitted fabric surface in a checkered pattern.
By increasing by 20%, the sinker loop SL of the non-stretchable knitting yarn Y1 bulges on the surface of the knitted fabric to form a convex portion F.
Regarding the formation of the convex portion F, in addition to the swelling of the sinker loop SL, the high shrinkage action of the polyurethane yarn of the knitting yarn Y3 located below the sinker loop SL works to form the convex portion F on the fabric surface. To do.
As a result, in detail, as shown in the schematic surface view of FIG. 4 (partially omitted), the convex portions F1 having a size of 7 wales × 12 courses are provided at intervals of 8 courses, and a convex portion of 5 wales × 8 courses. F2 is alternately arranged every other row at 12 course intervals, and the convex portions F1 and F2 are arranged in a checkered pattern to form an uneven stretchable tricot knitted fabric K having an uneven surface.

As shown in a cross-sectional explanatory view of FIG. 5 (cross-sectional view taken along line XX in FIG. 4), a space A1 is formed between the sinker loop SL and the needle loop NL of the convex portion F, and this space A1. The air kept in the air creates a heat insulation effect and blocks the temperature change of the outside air.
Moreover, as shown in the wearing cross-sectional explanatory view (partially omitted) of FIG. 6, if the inner side of the concavo-convex stretchable tricot knitted fabric K is set on the sinker loop SL side, for example, an inner for women is manufactured, a convex portion is used when worn. F does not touch the body V, and the body V and the uneven stretchable tricot knitted fabric K do not adhere to each other.
As a result, the feeling of wearing is improved, and an air layer A2 is formed between the body V and the air layer A1.
The air layer A1 and the air layer A2 also have a ventilation function in which the air in the air layers A1 and A2 is discharged and replaced when the temperature and humidity of the clothing atmosphere reach a certain level or more. The improvement of wearing feeling is achieved.

(Second Embodiment)
In the first embodiment, the convex portions F are arranged in a checkered pattern alternately as two types of convex portions F1 having a size of 7 wales × 12 courses and convex portions F2 having a size of 5 wales × 8 courses. However, in the present embodiment, one type of convex portion F is arranged in a checkered pattern.
Specifically, the knitting yarn Y1 is threaded through the knitting L1 3 in 3 outs, and the knitting yarn Y2 is threaded through the lacing L2 in 3 out 3 ins. Then, with respect to the knitting yarn Y1, the delivery length is 6 courses at a constant length, the next 6 courses are increased by 25%, and the delivery is repeated.

By doing so, the size of the convex portions F1 and F2 becomes a size of 5 wales × 6 courses, and as shown in the surface schematic diagram (partially omitted) of FIG. F2 are alternately arranged in a checkered pattern.
As with the first embodiment, the knitting yarn Y2 is performed opposite to the sending of the knitting yarn Y1.
In this way, the convex portion F is simplified in design by having the same size and the same shape, and a state close to uniform point contact is obtained in contact with the body V.

Then, for example, 44 dtex / 24f of a polyester yarn that is a non-stretchable knitting yarn is used as the knitting yarn Y1, and 22 dtex / 12f of a polyester yarn that is a non-stretchable knitting yarn is used as the knitting yarn Y2.
That is, the knitting yarn Y2 is half as thick as the knitting yarn Y1.
By doing so, the knitting yarn Y1 and the knitting yarn Y2 become more symmetrical, the vertical stripe is emphasized and a visual change is obtained, and the air permeability of the knitting yarn Y2 portion is improved. As a result, diversification of the purpose of use is achieved.

(Third embodiment)
In the present embodiment, the setting is the same as in the second embodiment, and only the feed length of the knitting yarn Y1 is repeatedly changed as constant, increased, constant, increased...
The knitting yarn Y2 has a constant feed length, and forms a plane row P that does not have the convex portion F. Thus, for the knitting yarn Y1, a convex portion F1 of 5 wales × 6 courses is formed every six courses. Then, they are arranged across the plane row P by the knitting yarn Y2.
As a result, as shown in the schematic surface diagram of FIG. 8 (partially omitted), the portions of constant feed cross to form a lattice shape, and the formation of vertical and horizontal air layers A2 between the convex portions F is achieved, It becomes an air ventilation path and functions to discharge and replace air, thereby further improving the feeling of wearing.

The present invention has been described above by taking the embodiment thereof as an example. However, the present invention is not limited to the embodiment as long as the essence thereof is not changed, and various modifications are possible.
For example, in this embodiment, the uneven stretchable tricot knitted fabric K whose knitted structure is a half structure has been described. However, the knitted structure is not limited to a half structure, and there are many other changes such as an inverted half structure and a double denby structure. Organizations can be hired.
Further, the gauge of the tricot machine is not limited to 28 gauge.

And it is possible to diversify products by adding inserts and other knitting structures by using not only three sheets but also more than three sheets.
In addition to thin and lightweight products, it is also possible to obtain thick products rich in surface changes using thick knitting yarns.
Furthermore, it is also possible to obtain a surface effect by giving a horizontal stripe by making the feed lengths of the knitting yarn Y1 and the knitting yarn Y2 constant at a time or increasing them all at once.

As for the change in the feed length, it is possible to set an increase with respect to a certain length in a mixed manner, for example, 10%, 20%, and 30%.
By doing so, the height of the convex portion F changes, and a higher surface effect can be obtained.

In addition, as the non-stretchable knitting yarn, a processed yarn obtained by crimping synthetic fiber such as polyester yarn can be included in the category, and various product developments can be achieved.
The knitting yarn Y1 and the knitting yarn Y2 can be made not only by adopting different fineness, but also by different colors, or by using different materials such as a combination of nylon yarn and polyester yarn.
And the shape of the convex part F can also be formed in various shapes by combining the feed lengths of the knitting yarn Y1 and the knitting yarn Y2.

  The uneven stretchable tricot knitted fabric K according to the present invention is not only used for sports clothing and function clothing, but also bedding such as futons and bedspreads, seats for chairs and sofas, seats for vehicles, etc. It can be used in a wide range of fields such as medical supporters and auxiliary materials.

A1, A2 ... Air layers B1, B2, B3 ... Beam C ... Cord structure D ... Denby structure F, F1, F2 ... Protrusions G1, G2, G3 ... Guide H ..Half texture K: Uneven stretchable tricot knitted fabric L, L1, L2, L3 ... Osamu M ... Tricot machine N ... Needle NL ... Needle loop P ... Planar row R1, R2, R3 ... Beam shaft SL ... Sinker loop V ... Body Y, Y1, Y2, Y3 ... Knitting yarn

Claims (8)

  A stretchable tricot knitted fabric in which the non-stretchable knitted yarn sinker loop is positioned outside the stretcher knitted yarn sinker loop, and the non-stretchable knitted yarn and the stretchable knitted yarn are each knitted with a braided structure. The stretch knitting yarns are divided into a plurality of required number of yarns, and within each division, the length of the sinker loop of the non-stretchable knitting yarns over the required number of courses is determined for each required course number interval. Convex portions are formed by the swelling of the sinker loop by increasing the length of the loop and the contraction force of the stretchable knitting yarn located below the sinker loop, and the convex portions adjacent to each other are formed. An uneven stretchable tricot knitted fabric having unevenness on the surface, wherein the convex portions are arranged in a checkered pattern by forming the portions alternately.   The knitted structure of the non-stretchable knitted yarn is a cord structure (1-0 / 2-3), and the knitted structure of the stretchable knitted yarn is a denby structure (1-2 / 1-0). Uneven elastic tricot knitted fabric.   2. The uneven expansion and contraction according to claim 1, wherein the required plural number is 3 to 8, the required number of courses in the section is 6 to 14 courses, and the required number of courses is 6 to 14 courses. Sex tricot knitted fabric.   The uneven stretchable tricot knitted fabric according to claim 1, wherein the convex portions arranged in a checkered pattern have the same size and the same shape.   The uneven stretchable tricot knitted fabric according to claim 1, wherein the non-stretchable knitting yarn is a synthetic fiber of 8 to 84 dtex, and the stretchable knitting yarn is a polyurethane yarn of 8 to 78 dtex.   When knitting the non-stretchable knitting yarn and the stretchable knitting yarn with a knitted structure, knitting the sinker loop with the non-stretchable knitting yarn outside the sinker loop with the stretchable knitting yarn and dividing the non-stretchable knitting yarn according to the required number, Necessary courses that are knitted by increasing the feed length of the non-stretchable knitting yarn in each section over the required number of courses every required number of courses compared to the feed length at the required number of courses. Forming a convex part by forming a convex part with the shrinking action of the stretchable knitting yarn located below the non-stretchable knitting yarn and bulging the sinker loop of the non-stretchable knitting yarn for several minutes outward. The knitting method of the uneven | corrugated elastic tricot knitted fabric characterized by the above.   The knitting of a concavo-convex stretchable tricot knitted fabric according to claim 6, wherein the convex portions are formed alternately on the surface for each section, and the convex portions are arranged in a checkered pattern to form irregularities on the surface. Method. 7. The uneven stretchable tricot knitted fabric according to claim 6, wherein the feeding length increased over the required number of courses is in a range of 15% to 30% more than the feeding length at the required number of courses. How to organize.

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