TW202016383A - Circular knitted fabric - Google Patents

Abstract

To provide a circular knitted fabric having a good balance of elongation in the wale and course directions and having a knitted pattern. A circular knitted fabric having a 1 × 1 rib jaquard knitting structure as the basic structure thereof. The circular knitted fabric is characterized by: having non-elastic yarn and elastic yarn being each fed in full sets and plate-knitted; knit loops occupying 10%-90% of the total structure; at least either a tuck or a welt being included; differences in the structure at different places forming a knitted pattern on the knitted fabric surface; the elongation in the wale and course directions under a load of 14.7 N/2.54 cm being 100%-280% respectively; and the elongation ratio, i.e., (elongation in the wale direction) / (elongation in the course direction) under a load of 14.7 N/2.54 cm being 0.5-2.0.

Description

Round braid

This application is based on the Japanese patent application 2018-120901 (application date: June 26, 2018), and enjoys priority based on the Japanese patent application 2018-120901. This application includes all contents of the application by referring to Japanese Patent Application 2018-120901.

The present invention relates to a circular knitted fabric which uses a 1×1 rib jacquard weave structure as a basic structure and uses an inelastic fiber yarn and an elastic fiber yarn to add yarn to weave.

A circular knit fabric using elastic yarn has been previously known. For example, there is known a circular knit fabric which is moisturized due to interweaving of cotton yarn or chemical synthetic fiber blended yarn and woven elastic yarn alternately arranged in a ribbed stitch (fraise stitch). Hygroscopicity and moderate suitability.

Furthermore, it is known that by knitting the whole circular knit fabric with cotton yarn or chemical synthetic fiber blended yarn while adding elastic knitting in a part, it is excellent in hygiene and follows the activity of the wearer, etc. Excellent as a single-sided knitted circular knit of thin cloth. Such circular knit fabrics are widely used in casual wear or sportswear.

Moreover, even if the circular knit fabric does not use elastic yarn in its structure, the stretchability in the weft loop direction (transverse direction, that is, the cylindrical circumferential direction) is greater than that in the warp loop direction (longitudinal direction, that is, the cylindrical axial direction). . If an elastic yarn is used for weaving a part of the circular knitting fabric, the stretchability in the weft loop direction which is originally excellent in stretchability is further improved. However, since the elasticity of the circular knitting fabric is not very improved in the warp direction, the balance between the elongation in the warp direction and the weft direction is not good.

In response to this, as disclosed in Patent Documents 1 to 3, attempts have been made to increase the stretchability in the warp and weft directions. In the circular knitting of these documents, an elastic yarn is used for a portion of the stitches, and the stitches are continuous in the warp direction. Therefore, stretchability is generated between the weft loops to which the elastic yarn is supplied, whereby the stretchability in the warp direction also becomes higher, and as a whole, in three directions of the warp direction, the weft direction, and the oblique direction Scalability becomes higher. Patent Document 1: Japanese Patent Publication No. 59-35595 Patent Document 2: Japanese Patent Publication No. 61-11265 Patent Document 3: Japanese Patent Publication No. 61-37377

However, the balance of the elongation in the warp and weft directions is not sufficient if it is a previously known circular knit, and there is still room for improvement. In addition, it is also required to form a knitting pattern (that is, a pattern formed during knitting) on a circular knit fabric.

Therefore, an object of the present invention is to provide a circular knit fabric having a good balance between the elongation in the warp direction and the weft direction, and further having a woven pattern, and a method for manufacturing the same.

The circular knitting fabric of the present invention uses a 1×1 rib jacquard weave as the basic organizer, and is characterized in that the non-elastic fiber yarn and the elastic fiber yarn are respectively fed to the yarn in a full set manner to add yarn For woven fabrics, the woven loops account for 10 to 90% of the entire structure, and include at least any one of the tucks and floats. The woven pattern on the surface of the woven fabric will be formed according to the structural differences generated by the parts, 14.7N/2.54 The elongation in the warp and latitude directions under the load condition of cm is 100～280%, respectively, and the elongation ratio under the load condition of 14.7N/2.54cm is (elongation in the warp direction) ÷ (weft direction The elongation) is 0.5 to 2.0.

Furthermore, in the above circular knitting, the final knitting density is preferably 105 weft loops/2.54 cm or more and 48 warp loops/2.54 cm or more.

Furthermore, in the above circular knitting, it is preferable that the fineness of the elastic fiber yarn is 11 to 110 dtex, and the fineness of the non-elastic fiber yarn is 11 to 110 dtex. The fineness of the elastic fiber yarn: the fineness of the non-elastic fiber yarn is 1: 0.3 to 1: 4.5.

In addition, the method of manufacturing a circular knit fabric of the present invention is a method of manufacturing a circular knit fabric knitted using a 1×1 rib jacquard weave as a basic structure, and is characterized in that the non-elastic fiber yarn and the elastic fiber yarn are fully worn Weave yarn by way of adding yarn, and at the same time set 10 to 90% of the whole structure as a knitting loop to form at least any one of a tuck and a floating line, and use the difference in texture generated by the part to make it on the surface of the knitted fabric. A knitting pattern is formed, and in each of the above-mentioned non-elastic fiber yarns and elastic fiber yarn feeding yarns, the yarn feeding amount is adjusted in such a manner as to monitor the tension of the supplied yarn while keeping the tension constant.

The circular knitting fabric of the present invention is a yarn made of elastic fiber yarns in a full-threading manner and added yarns, and has the above-mentioned elongation and elongation ratio, so the elongation in the warp and weft directions is high , And the balance of the extension in both directions is good.

Furthermore, in the circular knitting of the present invention, in addition to the knitting loop, at least any one of the tuck stitch and the floating thread is included, so that various knitting patterns formed by differences in texture can be formed. The surface with a higher ratio of woven loops has a uniform surface. On the other hand, the portion with a lower ratio of woven loops produces a sense of transparency and changes in the surface. Therefore, the ratio of the knitting loops is arbitrarily changed according to the position, and thereby the circular knit fabric becomes a design with excellent surface change.

Moreover, in the circular knitting of the invention of the present invention, the knitting loop accounts for 10 to 90% of the whole structure, and the remaining part is occupied by the characteristic part formed by the tuck and the float, so not only is the circular knitting stable, but also the knitting The degree of freedom of the pattern is higher.

In addition, according to the method of manufacturing the circular knit fabric of the present invention, the non-elastic fiber yarn and the elastic fiber yarn are added to the yarn in a full-threading manner, and thus the elongation in the warp direction and the weft direction can be produced. Round braid with good balance. Furthermore, in addition to forming a knitting loop, at least one of a tuck stitch and a floating thread is also formed, whereby a circular knit fabric having various knitting patterns formed by differences in structure can be manufactured. In addition, in the yarn feeding of each of the non-elastic fiber yarn and the elastic fiber yarn, the yarn feeding amount is adjusted in such a manner as to monitor the tension of the supplied yarn while keeping the tension constant, so the loop can be formed freely. Tuck and float.

An embodiment of the present invention will be described. The embodiments described below are only examples, and those that are appropriately modified without departing from the gist of the present invention are included in the scope of the present invention.

In the following description, the numerical range is expressed as "lower limit to upper limit", and the lower limit and upper limit are naturally included in the numerical range. In addition, in the following description, there are cases where three of "A and B", "A only", and "B only" are collectively expressed as "A and/or B".

Also, the part formed by tuck weaving is expressed as "tuck", and the part formed by floating knitting is expressed as "float". In addition, the general term for woven loops, tuck loops and floats is referred to as "organization". That is, the expression "organization" includes woven loops, tuck loops and floating threads. However, when expressing "1×1 rib knitting weave", "1×1 rib jacquard weave", "basic weave", "bottom weave", etc., "weave" means all over the loops, tucks and floats The combination of a wide range of woven organization.

First, the structure of the circular knit fabric of the embodiment will be described.

The circular knit fabric of the embodiment is a kind of double-knitted fabric with a 1×1 rib jacquard weave as the basic organizer. The 1×1 rib jacquard weave is a part of the 1×1 rib weave that becomes a structure other than the woven loop (specifically, at least one of the tuck and the float), which can be obtained by jacquard weaving. achieve.

The 1×1 rib jacquard weave is composed of two layers of bottom and top layers. In the front and back, the two-layer bottom structure is the yarn of each bottom structure intertwined and connected, and the connecting yarn connecting the two-layer bottom structure is not used. Since the connecting yarn is not used, the elongation of the circular knit fabric is not easily damaged, and it is easy to knit, and it is also not easy to cause problems such as two-layer bottom tissue deviation.

The circular knit fabric of the embodiment is obtained by giving non-elastic fiber yarns and elastic fiber yarns to the yarns in a full-threading manner, and adding yarn knitting (also referred to as plating stitch). Therefore, in the circular knitting of the embodiment, all the structures of the bottom structure in the front and back layers are composed of non-elastic fiber yarns and elastic fiber yarns. Therefore, by continuously connecting the elastic fiber yarns in the warp and weft directions, the elongation of the circular knit fabric in both directions becomes higher.

The knitting structure of the circular knit fabric of the embodiment includes a knitting loop. In addition to the woven loop, it also includes at least any one of the tuck and the float. That is, there are cases where the knitted structure has woven loops and tucks, cases with woven loops and floats, and cases with woven loops, tucks and floats. All of these woven loops, tucks and floats are composed of non-elastic fiber yarns and elastic fiber yarns.

FIG. 1 shows the 1×1 rib knitting structure in the circular knitting of the embodiment. In this figure, all organizations are woven loops. In addition, as shown in the figure, all structures are composed of inelastic fiber yarns 4 and elastic fiber yarns 5. In addition, the tuck is shown in FIG. 2 and the floating line is shown in FIG. 3. In Figures 2 and 3, the tissue near the center of the figure becomes a tuck or floating line, respectively.

In addition, in the circular knitting of the embodiment, the difference in texture caused by the different parts forms a knitting pattern on the surface of the knitting fabric. That is, at the position of the tuck or float, the braid is transparent or the surface of the braid becomes a concave portion compared to the position of the woven loop. Therefore, if the woven loop portion and the tuck and/or float portion are combined, the tuck and/or float portion becomes a transparent portion (light-transmitting portion) or a recessed portion, so that the light-transmitting portion or the recessed portion is applied to the knitted fabric A woven pattern is formed on the surface. This woven pattern is excellent in design with swelling or transparency.

FIG. 4 shows a round knitted fabric 1 as an example. In this circular knitted fabric 1, a thin cloth portion 3 formed by a plurality of tucks and/or floating threads is regularly formed in a thick cloth portion 2 composed of a woven loop. These thin cloth portions 3 become a woven pattern on the surface of the knitted fabric.

Also, as an example, on one side of a circular knit fabric (such as the inner surface of the fabric, that is, the side of the dial side when knitting), all the tissues are composed of the knitting ring, and on the other side (such as the surface of the fabric, that is, the cylinder when knitting) Side surface), weaving loops and tuck loops and/or floats are formed.

Furthermore, in the weaving of circular knit fabrics, while weaving basic structures such as double rib structures or fraise structures, we can use computers or mechanical mechanisms to perform small jacquard weave or large jacquard weave while weaving to change the structure. . If such knitting is performed, a specific knitting pattern is repeated on the circular knit fabric in the longitudinal direction or the transverse direction. Let the range that becomes the basis of the repetition be the "effective pattern range". Therefore, the "effective pattern range" is repeated in the longitudinal direction or the transverse direction, and becomes the whole circular knit.

Incidentally, in FIG. 4, an effective pattern range is formed by a thin cloth portion 3 and the thick cloth portion 2 around it, and the effective pattern range is repeated in the longitudinal direction and the transverse direction to become a circular knitted fabric 1. overall.

In the circular knitting of the embodiment, the knitting ring accounts for 10 to 90% of the entire structure. That is, the number of woven loops is 10 to 90% relative to the total number of tissues obtained by adding the number of woven loops, the number of tucks and the number of floats. Also, tucks and/or floats account for the remaining percentage. If the situation is expressed by other methods, it is (the number of woven loops): (the number of loops and/or floats) is 9:1 to 1:9. In addition, this ratio is a ratio in 1 effective pattern range.

With the woven loops accounting for 10 to 90% of the entire organization, the circular knit fabric becomes stable, and the degree of freedom of the woven pattern increases.

Moreover, it is more preferable that the woven loops account for more than 20% of the entire organization, and further more than 35%.

Furthermore, in the circular knitting of the embodiment, the final knitting density is preferably 105 weft loops/2.54 cm or more and 48 warp loops/2.54 cm or more. The final knitting density of the circular knit fabric is equal to the knitting density of the clothing etc. made by sewing the circular knit fabric. However, due to the load at the time of sewing, the knitting density of the clothing and the like after sewing and the final knitting density of the circular knit are slightly different in part.

When the circular knit fabric of the embodiment has such a knitting density, it has sufficient elongation in the warp and weft directions. In addition, clothing made based on the circular knit fabric becomes a well-dressed person.

Next, the yarn used in the circular knitting of the embodiment will be described. First, the elastic fiber yarn will be described.

The elastic fiber yarn used in the circular knitting of the embodiment has a fineness of 11 to 110 dtex (cents). If the fineness of the elastic fiber yarn is within this range, the circular knit fabric is less likely to run, and the circular knit fabric has sufficient elongation in the warp and weft directions. Also, if the fineness of the elastic fiber yarn is 110 dtex or less, the phenomenon of "winding" is less likely to occur in the circular knit fabric (that is, the elastic fiber yarn protrudes more toward the outer peripheral side of the loop than the non-elastic fiber yarn and appears on the surface of the knitted fabric Therefore, if the appearance of the circular knitted fabric is impaired, if it is a good product, the non-elastic fiber yarn protrudes to the outer peripheral side of the loop more than the elastic fiber yarn and appears on the surface of the knitted fabric).

The more ideal elastic fiber yarn has a fineness of 15 to 33 dtex. If the fineness of the elastic fiber yarn is within this range, it is further less likely to cause spinning and winding, and the circular knit fabric has sufficient elongation in the warp and weft directions.

In addition, if the elongation at break of the elastic fiber yarn is 400% to 1200%, the stretchability is excellent, which is preferable. Furthermore, the elongation at break is the breaking strength measured by the method of the standard test for elongation of JIS-L-1013-1998. Furthermore, it is preferable that the elastic fiber yarn is not damaged at a temperature around 195° C. which is the temperature at the time of the predetermined type.

The elastic fiber yarn is specifically a polyurethane elastic fiber yarn. As the polyurethane-based elastic fiber yarn, a polyether-based urethane elastic yarn is preferred, and a polyether-ester-based elastic yarn may also be used.

As the polyurethane elastic fiber yarn, for example, one obtained by dry spinning or melt spinning can be used. In addition, the polymer and spinning method of the polyurethane elastic fiber yarn are not limited.

Next, the non-elastic fiber yarn used in the circular knitting of the embodiment will be described.

The inelastic fiber yarn used in the circular knitting of the embodiment has a fineness of 11 to 110 dtex. If the fineness of the non-elastic fiber yarn is within this range, the circular knit fabric is less likely to be drawn, and the circular knit fabric has sufficient elongation in the warp and weft directions. In addition, if the fineness is 11 dtex or more, the circular knit fabric is less likely to curl.

A more ideal non-elastic fiber yarn has a fineness of 17 to 33 dtex. If the fineness of the non-elastic fiber yarn is within this range, it is further less likely to cause spinning and winding, and the circular knit fabric has sufficient elongation in the warp and weft directions.

The non-elastic fiber yarn used in the circular knitting of the embodiment may be any of filament yarn and short fiber spinning. As a filament yarn, it is preferably made of mucous rayon, copper ammonia rayon, acetate fiber, polyamide fiber, polyester fiber, polytrimethylene terephthalate fiber, acrylic fiber, polypropylene fiber, vinyl chloride The fiber and other chemical synthetic fibers may be any one of unprocessed raw yarn, false-twisted yarn, colored yarn, etc., or may be a composite yarn thereof. As staple fiber spinning, it is more desirable to use natural fibers such as cotton yarn, wool, hemp, mucilage rayon, cuprammonium rayon, acetate fiber, polyamide fiber, polyester fiber, acrylic fiber, polypropylene fiber, chlorine For short fibers composed of chemical fibers such as ethylene fibers, these may be any of a single substance or blended fibers.

In addition, as the non-elastic fiber yarn used in the circular knitting of the embodiment, at least two types of non-elastic yarns having different gloss and/or fineness are preferably used. When two types of non-elastic yarns with different deniers are used as the non-elastic fiber yarns, the fineness ratio is preferably 1:0.5 to 1:4.

In addition, regarding the yarn used in the circular knitting of the embodiment, the fineness of the elastic fiber yarn: the fineness of the non-elastic fiber yarn is 1:0.3 to 1:4.5. As a more ideal ratio, the fineness of the elastic fiber yarn: the fineness of the non-elastic fiber yarn is 1:0.5 to 1:1.5. Furthermore, as a more ideal form, under the condition that the fineness of the elastic fiber yarn is 11 to 110 dtex and the fineness of the non-elastic fiber yarn is 11 to 110 dtex, the fineness of the elastic fiber yarn: the fineness of the non-elastic fiber yarn is 1: 0.3 to 1: 4.5 (or 1: 0.5 to 1: 1.5).

In addition, the total fineness of the yarn used in the circular knitting of the embodiment (that is, the fineness obtained by adding the fineness of the non-elastic fiber yarn and the fineness of the elastic fiber yarn) is preferably 22 to 310 dtex, more preferably 22 to 122 dtex.

Next, the features other than the above in the circular knitting of the embodiment will be described.

The circular knitting fabric of the embodiment is 100 to 280% in the warp and weft directions under a 14.7N/2.54cm load condition, and the elongation ratio under the 14.7N/2.54cm load condition is (warp The elongation in the loop direction) ÷ (the elongation in the weft direction) is 0.5 to 2.0.

With an elongation of 100% or more, the clothing using the circular knit fabric becomes fit to the body without feeling tight, and thus has a good wearing feeling. Also, with an elongation of 100% or more, there is no need for extra effort when putting on or taking off clothing that uses circular knits. In addition, with an elongation of 280% or less, the elastic fatigue of the elastic fiber yarn is suppressed, the durability is maintained, and the strength of the cloth is ensured. In addition, with an elongation ratio of 0.5 to 2.0, clothing using a circular knit fabric becomes excellent in wearing and the like.

The more ideal ranges of the elongation in the warp and weft directions under the load condition of 14.7N/2.54cm are 120-250%, respectively. In addition, the elongation ratio under a load condition of 14.7 N/2.54 cm is more preferably 0.8 to 1.2. If the elongation or elongation ratio is within these ranges, the effect of the clothing using the circular knit fabric is good, and the effect becomes larger.

Here, the "elongation" in the present invention refers to the elongation when a test piece having a width of 2.54 cm is measured in accordance with the elongation test B method (constant load method) of JIS-L-1096. In addition, the load condition of 14.7N/2.54cm reproduces the condition of the load on the clothes when ordinary people wear clothes to perform daily activities. In addition, the so-called 14.7N/2.54cm means that the test piece with a width of 2.54cm is loaded with 14.7N.

In addition, the circular knit fabric of the embodiment is preferably an elongation in the warp and weft directions under a load condition of 22.1 N/2.54 cm of 120 to 300%, and an elongation under a load condition of 22.1 N/2.54 cm, respectively. The ratio (elongation in the warp direction) ÷ (elongation in the weft direction) is 0.5 to 2.0. The more ideal ranges of the elongation in the warp and weft directions under a load condition of 22.1 N/2.54 cm are 140～270%. In addition, the elongation ratio under a load condition of 22.1 N/2.54 cm is more preferably 0.8 to 1.2.

Here, the load condition of 22.1N/2.54cm reproduces the condition of the load on the clothes when an ordinary person performs an action such as maximally tightening the clothes. In addition, the so-called 22.1N/2.54cm means that a test piece with a width of 2.54cm is loaded with 22.1N.

Next, an example of the manufacturing apparatus and manufacturing method of the circular knit fabric of the embodiment will be described.

The manufacturing apparatus of the circular knit fabric of the embodiment can perform jacquard knitting that imparts changes in knitting loops, tucks, and floats to each yarn loop position, and by a circular knitting machine capable of high-density knitting, and capable of targeting tissues Each type realizes the combination of the electrically controlled yarn feeding device that changes the yarn feeding amount.

The circular knitting machine is a circular knitting machine with a double needle bed on the cylinder side and the dial side (the so-called double-sided knitting circular knitting machine). The positions of the knitting needles on the cylinder side and the needles on the dial side are offset. The amount of half-pitch of the knitting needle row (becomes the so-called "rib intersecting"). In addition, the circular knitting machine has an electrically controlled needle selection mechanism for jacquard knitting. In addition, in order to enable high-density weaving, the number of circular knitting machines is preferably 32 to 40, and further preferably 36 to 40.

Here, the amount of yarn feed required to form the knitting loops, tuck loops and floats varies. Therefore, in order to perform jacquard knitting that imparts changes in knitting loops, tucks, and floats, a yarn feeder that can supply an appropriate amount of yarn for each type of tissue is used.

Specifically, the yarn feeding device includes a monitoring device (for example, a load cell) that monitors the tension of the yarn supplied to the circular knitting machine. Further, the yarn feeding device has a control device that adjusts the yarn feeding amount according to the tension of the yarn detected by the monitoring device to keep the tension of the yarn fixed, and performs control in this manner. By controlling the yarn tension to be fixed, even if the structure changes, the amount of yarn suitable for the structure can be stably supplied. This yarn feeding device is used to feed both non-elastic fiber yarns and elastic fiber yarns.

Using the manufacturing apparatus of such a circular knitting machine, the circular knitted fabric of the above embodiment is knitted. At this time, after the non-elastic fiber yarn and the elastic fiber yarn are respectively fed in a full-threading manner and arranged side by side, the yarn is added and knitted. In addition, the bottom structure of the two layers on the front and back of the circular knit fabric is knitted separately by the double needle bed on the dial side and the cylinder side of the circular knitting machine. At this time, jacquard weaving is performed to form a knitting loop and a tuck stitch and/or a floating thread. As an example, the knitting needles on the dial side knit the knitting loops at all the yarn loop positions, the knitting needles on the cylinder side are regularly controlled, and the knitting loops at the specific yarn loop position, at other specific yarn loop positions Weave tucks and/or floats.

Here, as an example of a method of knitting a circular knit fabric having a transparent feeling, the fineness ratio of the yarn supplied from the odd-numbered feeder and the even-numbered feeder is increased (for example, the fineness of the yarn supplied from the other feeder is (The ratio of the fineness of the yarn supplied from one feeder is set to 40% or less or 140% or more). Then, while weaving the entire circular knit fabric with a yarn with a larger fineness, and weaving a portion to be used as a light-transmitting portion with a yarn with a smaller fineness, a transparent circular knit fabric with a light-transmitting portion partially formed can be obtained.

In addition, as another example of a method of weaving a circular knit fabric with a transparent feeling, by regularly combining tuckers, floats, and knitting loops according to the design to be expressed, a unique sense of transparency using the tuckers can be obtained and the overall Transparent round braid. In order to realize these examples, it is important to use the above-mentioned circular knitting machine with electrically controlled needle selection mechanism and electrically controlled yarn feeder.

In this knitting, the yarn feeding device adjusts the yarn feeding amount while monitoring the tension of the supplied non-elastic fiber yarn and elastic fiber yarn while keeping the tension constant. With this, yarn feeding suitable for each organization is performed.

For the finished fabric, for example, finishing, drying, final setting such as opening, scouring, pre-setting (dry heat setting), dyeing, resin processing, etc. The knitting density of the circular knit fabric completed through these steps is the above-mentioned final knitting density.

The finished circular knit fabric becomes garments and other products through steps such as cutting or sewing. Examples of clothing include underwear, casual wear, and sportswear. The whole garment may be composed of the circular knit, or the circular knit may be used for only a part of the garment.

Next, Examples and Comparative Examples will be described.

Evaluation of the circular knit fabrics of the following examples and comparative examples was carried out. The evaluation items and evaluation methods are as described in (1) to (3) below. (1) Evaluation of elongation

Prepare 3 test strips with a length of 16 cm in the longitudinal direction (warp direction) and 2.54 cm in the horizontal direction (weft direction) as the test pieces for the elongation in the warp direction. In addition, prepare 3 test pieces with a longitudinal length of 2.54 cm and the horizontal direction The 16cm test piece is used as the test piece in the direction of the weft circle. A constant-speed tensile tester (Autograph, manufactured by Shimadzu Corporation, AG-500D) was used for the measurement. A chuck jig with a test piece holding part in a tooth shape was used, and the upper holding length was 2.5 cm, the lower holding length was 3.5 cm, the chuck interval was 10 cm, and the test piece holding pressure was 490 kPa. Then, the stretching speed was set to 30 cm/min, and the elongation under a load of 14.7 N was measured. After the measurement, the average value of the elongation of the three test pieces was calculated. (2) Elongation ratio

The measurement result based on the above elongation is calculated according to the following formula. Elongation ratio = (elongation in warp direction) ÷ (extension in weft direction) (3) Evaluation of thread drawing

Cut the longitudinal end of the braided end of the self-knitted fabric into the longitudinal direction, and use your fingernail to pluck the yarn circle near the incision to visually evaluate the occurrence of threading. The evaluation results are shown as ○× as follows. ○: No threading occurs from the cut end ×: There is threading from the cut end (4) Evaluation of woven patterns

Evaluate the presence or absence of different weave patterns based on loops, tucks and floats. (5) Evaluation of weaving quality

Visually evaluate the weaving quality (mainly the presence or absence of winding). The evaluation results are shown as ○× as follows. ○: Good weaving quality ×: Poor weaving quality (Example 1)

The double-sided knitting circular knitting machine M-LEC7BSD (38 inch diameter, 36 gauge) manufactured by Fukuhara Seiki Co., Ltd. was used as the knitting machine. In addition, E-COMPACT ATTIVO and SPINI manufactured by LGL Italy were used as the yarn feeder. Using this yarn feeding device, 22dtex 20f nylon filament yarn and 22dtex polyurethane yarn (ROICA (registered trademark) C805 manufactured by Asahi Kasei Co., Ltd.) were simultaneously fed from the same feeder to the dial and the cylinder The needles on both sides make the nylon filament yarn appear on the surface of both sides of the braid and arrange the polyurethane yarn on the inner side, thereby weaving a circular knit fabric with a 1×1 rib jacquard weave as the basic structure (double Knitting). Furthermore, nylon filament yarn and polyurethane yarn are used to give the yarn in a full-threaded manner. Also, set the woven loop to 50% of the whole organization.

After refining the woven circular knit fabric, an aqueous solution of 4.0% by weight of sodium benzenesulfonate, 1.0% by weight of tartaric acid as a non-volatile acid, and 0.1% by weight of EDTA as a chelating agent was prepared in the normal temperature treatment liquid After immersion for 5 seconds, dry heat was set at a temperature of 195°C for 1 minute. Then, use Aminyl Yellow FD-3RL (manufactured by Sumitomo Chemical Industry Co., Ltd.) 0.3% owf (by fabric weight), Aminyl Red FD-GL (manufactured by Sumitomo Chemical Industry Co., Ltd.) 0.3% owf, Aminyl Blue FD-GL ( (Sumitomo Chemical Industry Co., Ltd.) 0.3% owf is used as a dye, and it is dyed by a jet dyeing machine at 100°C with the usual formula. Then the final setting is performed to obtain a round knitted fabric with a finishing density of 130 wefts/2.54cm and 73 warp/2.54cm. (Example 2)

Set the ratio of the loop to 26%. Regarding the others, knitting and processing were performed in the same manner as in Example 1. (Example 3)

Set the loop ratio to 80%. Regarding the others, knitting and processing were performed in the same manner as in Example 1. (Comparative example 1)

The 1×1 rib knitting in Example 1 was changed to double rib knitting (knitting that overlaps the 1×1 rib knitting by two layers, also known as smooth knitting). The ratio of the loop is 100%. Regarding the others, knitting and processing were performed in the same manner as in Example 1. (Comparative example 2)

It does not use nylon filament yarn and polyurethane yarn for weaving, but only uses 77dtex36f nylon filament yarn to cover 22dtex polyurethane yarn. Regarding the others, knitting and processing were performed in the same manner as in Example 1.

[表2]

The evaluation results of the above examples and comparative examples are shown in Table 1 and Table 2. In addition, ○ in the items “1×1 rib knitting”, “polyurethane yarn is fully worn” and “adding yarn knitting” in Tables 1 and 2 means that the items described in this item have been performed, × means not proceeding. [Table 1]

[Table 2]

1: Round braid 2: Thick cloth part 3: Thin cloth part 4: Non-elastic fiber yarn 5: Elastic fiber yarn

Fig. 1 is a diagram showing a 1×1 rib weave. All organizations in this figure are woven loops.

Figure 2 is a diagram showing tucks.

Fig. 3 is a diagram showing a floating line.

Fig. 4 is a view of the circular braid viewed from a direction perpendicular to the surface of the circular braid.

1: Round braid

2: Thick cloth part

3: Thin cloth part

Claims (6)

A round braid with a 1×1 rib jacquard weave as the basic organizer, characterized by: It is a person who adds non-elastic fiber yarns and elastic fiber yarns to the yarn in a full-through manner and adds yarn to the knitting. The woven loops account for 10 to 90% of the entire structure, and include at least any one of the tucks and floats. The woven pattern is formed on the surface of the woven fabric according to the structural difference generated by the parts. The extension of the warp and weft directions under the load condition of 14.7N/2.54cm is 100～280%, The elongation ratio under the load condition of 14.7N/2.54cm, ie (elongation in the warp direction) ÷ (elongation in the weft direction) is 0.5 to 2.0. If the circular knit fabric of claim 1, its final knitting density is 105 weft loops/2.54cm or more and 48 warp loops/2.54cm or more. If the circular knit fabric of claim 1 or 2, the fineness of the elastic fiber yarn is 11～110dtex, and the fineness of the non-elastic fiber yarn is 11～110dtex, The fineness of elastic fiber yarn: The fineness of non-elastic fiber yarn is 1:0.3～1:4.5. The circular knit fabric according to claim 1 or 2, wherein at least two kinds of non-elastic yarns are used as the aforementioned non-elastic fiber yarns. The round knit fabric of claim 4, wherein two types of non-elastic yarns with different deniers are used as the aforementioned non-elastic yarns, and the denier ratio is 1:0.5 to 1:4. A method for manufacturing a circular knit fabric, which is a knitting process using a 1×1 rib jacquard weave as a basic structure. The method is characterized by: The non-elastic fiber yarn and the elastic fiber yarn are respectively fed to the yarn in a full-through mode, and the yarn is woven and added at the same time Set 10 to 90% of the whole structure as a knitting loop to form at least one of a tuck and a floating thread, and form a knitting pattern on the surface of the knitting fabric by the tissue difference caused by the part, In the yarn feeding of the non-elastic fiber yarn and the elastic fiber yarn, the yarn feeding amount is adjusted in such a manner that the tension of the supplied yarn is monitored while the tension is kept constant.

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