JP4520342B2 - Warp knitted fabric and method for producing a lightly raised warp knitted fabric using the warp knitted fabric - Google Patents

Description

  The present invention relates to a method for producing a lightly raised warp knitted fabric that is excellent in softness and hardly generates chalk marks, and a warp knitted fabric therefor.

  Conventionally, thin brushed knitted fabrics with fluff formed on the surface by physical methods such as emery brushing and needle cloth brushing have been widely used in the clothing field, the interior field such as chair upholstery, and the vehicle interior material field. . However, when emery or needle cloth is raised, the sinker loop appearing on the surface of the knitted fabric is cut, and the direction of the structure is likely to occur, and the fallen portion is whitened against the normal portion (that is, the occurrence of chalk marks), and the surface There was a problem that the quality of the product deteriorated.

  As a method of reducing the occurrence of such chalk marks, a method using a synthetic resin such as water-based polyurethane (for example, refer to Patent Document 1), or a method for applying a finish to a cypress by a tumbler or an airflow machine (for example, Patent Document 2) has been proposed.

  However, in the former method, when the texture of the fabric is hardened and the surface of the fabric is rubbed, there is a problem that the resin film covering the fiber is cracked and peeled to greatly deteriorate the surface quality. On the other hand, the latter method required the use of a special machine.

JP-A-5-117975 JP-A-8-109574

  The present invention has been made in view of the above background, and an object of the present invention is to provide a method for producing a thin napped warp knitted fabric that is excellent in softness and hardly generates chalk marks, and a warp knitted fabric therefor. .

  As a result of intensive studies to achieve the above-mentioned problems, the present inventors have found that when forming fluff on the surface of the warp knitted fabric by a physical method such as emery fluffing or raising a needle cloth, It has been found that by aligning in parallel to the direction in which the force of raising or raising the needle cloth is applied, the sinker loop is prevented from being cut, and as a result, a thin nap-like warp knitted fabric in which chalk marks are hardly generated can be obtained. The present invention has been completed through repeated studies.

Thus, according to the present invention, “a warp knitted fabric made of an organic fiber yarn and having a ground texture part and a surface texture part, a sinker loop appears on the surface of the surface texture part , and the surface texture part is a guide The sinker loop is oriented in the longitudinal direction by knitting at 00/01, 10/11, 11/33/11/11 or 00/00/00/22 in the minimum unit display of the repetitive movement of points. Is provided. ”.

At that time, the length of the sinker loop appearing on the surface is preferably in the range of 1.0 to 50 mm. The organic fiber yarn is preferably untwisted.
In the warp knitted fabric of the present invention, the total fineness A of the organic fiber yarn (a) constituting the ground texture portion is preferably in the range of 20 to 200 dtex. On the other hand, it is preferable that the total fineness B of the organic fiber yarn (b) constituting the surface layer structure part is in the range of 50 to 1000 dtex. Furthermore, the ratio A / B is preferably in the range of 0.2 to 0.6. Moreover, it is preferable that the surface of a surface layer structure | tissue part exhibits a fabric-like appearance.

  Further, according to the present invention, "the surface layer structure of the warp knitted fabric using an emery raising machine or a needle cloth raising machine so that the direction in which the force of the emery or the needle cloth is applied is parallel to the warp knitting direction. A method for producing a thin nap-like warp knitted fabric characterized in that napping is performed on the surface of the part. "

  ADVANTAGE OF THE INVENTION According to this invention, the manufacturing method of the thin nap-like warp knitted fabric which is excellent in soft property and a choke mark is hard to generate | occur | produce, and the warp knitted fabric for that are provided.

  First, the warp knitted fabric of the present invention has a ground texture part and a surface texture part, a sinker loop appears on the surface of the surface texture part, and the sinker loop needs to be oriented in the warp direction. Fig. 1 is a photograph of a sinker loop appearing on the surface of a surface tissue part. If the sinker loop is not oriented in the warp direction, the sinker loop is cut during raising and a chalk mark is generated. It is not preferable because a thin nap-like warp knitted fabric that is difficult to do is not obtained. Here, “the sinker loop is oriented in the longitudinal direction” means that the sinker loop is oriented at an inclination of about 30 degrees or less in the longitudinal direction.

  The length of the sinker loop appearing on the surface of the surface tissue part is not particularly limited, but is preferably in the range of 1.0 to 50 mm. When the length of the sinker loop is larger than 50 mm, the sinker loop is easily cut during raising. On the other hand, if the length of the sinker loop is smaller than 1.0 mm, there is a possibility that it cannot be raised sufficiently.

  As described above, in order to orient the sinker loop appearing on the surface of the surface textured portion in the warp direction, the warp knitted fabric has a two-layer structure of the ground textured portion and the surface textured portion, It is recommended to adopt 00/01, 10/11, 11/33/11/11, 00/00/00/22, etc. as the minimum unit display of the repetitive motion. Although it does not specifically limit as a structure | tissue of a ground tissue part, 1 needle swing (for example, 10/12), 3 needle swing (for example, 10/34), 5 needle swing (for example, 10/56) etc. are illustrated suitably.

  The fiber type of the organic fiber yarn constituting the warp knitted fabric of the present invention is not particularly limited, and cotton, wool, hemp, viscose rayon fiber, polyester fiber, polyetherester fiber, acrylic fiber, nylon fiber, polyolefin fiber, Ordinary fibers such as cellulose acetate fiber and aramid fiber may be used. Of these, polyester fibers are particularly preferable from the viewpoint of recyclability. The polyester fiber is produced from a dicarboxylic acid component and a diglycol component. As the dicarboxylic acid component, terephthalic acid is preferably used mainly, and as the diglycol component, it is preferable to use one or more alkylene glycols selected from ethylene glycol, trimethylene glycol and tetramethylene glycol. Moreover, the polyester resin may contain a third component in addition to the dicarboxylic acid component and the glycol component. Examples of the third component include cationic dye dyeable anion components such as sodium sulfoisophthalic acid; dicarboxylic acids other than terephthalic acid such as isophthalic acid, naphthalenedicarboxylic acid, adipic acid, sebacic acid; and glycol compounds other than alkylene glycol. For example, one or more of diethylene glycol, polyethylene glycol, bisphenol A, and bisphenol sulfone can be used. Further, it may be a biodegradable polyester fiber such as polylactic acid.

  In the resin forming the fiber, a matting agent (titanium dioxide), a fine pore forming agent (organic sulfonic acid metal salt), an anti-coloring agent, a heat stabilizer, a flame retardant (antimony trioxide), if necessary. , A fluorescent brightening agent, a coloring pigment, an antistatic agent (sulfonic acid metal salt), a hygroscopic agent (polyoxyalkylene glycol), an antibacterial agent, and other inorganic particles may be contained.

  The single fiber cross-sectional shape of the organic fiber yarn is not particularly limited, and may be a triangular shape, a flat shape, a constricted flat shape, a cross shape, a hexagonal shape, or a hollow cross-sectional shape in addition to a normal circular cross section. Furthermore, the composite fiber by which 2 or more types of components were bonded together by the side-by-side or core-sheath type | mold may be sufficient.

  Although the single fiber fineness, the number of filaments, and the total fineness of the organic fiber yarn are not particularly limited, it is preferable to have a single yarn fineness of 1 to 5 dtex, a filament number of 10 to 100, and a total fineness of 20 to 1000 dtex. Especially, it is preferable that it is in the range of 20-200 dtex as the total fineness A of the organic fiber yarn (a) which comprises a ground tissue part. Moreover, it is preferable that it is in the range of 50-1000 dtex as the total fineness B of the organic fiber yarn (b) which comprises a surface layer structure | tissue part. Furthermore, the ratio A / B is preferably in the range of 0.2 to 0.6.

  The organic fiber yarn is preferably untwisted. If it is twisted, there is a possibility that the appearance of light brushed tone cannot be obtained. Moreover, it is preferable that the organic fiber yarn is a multifilament subjected to crimped false twisting or air processing because the softness is improved.

  The warp knitted fabric of the present invention can be easily obtained by knitting with the knitting structure using a tricot machine or a Russell machine having three or more warps.

In such warp knitted fabrics, it is usually preferable that the surface of the surface layer structure portion has a fabric-like appearance because it can be used as a warp-knitted fabric having a fabric-like appearance. In order to obtain a fabric-like appearance, the length of the sinker loop appearing on the surface may be about 1 to 10 mm.
In the warp knitted fabric of the present invention, as long as the object of the present invention is not impaired, conventional dyeing processing, alkali weight reduction processing, colored printing, etching, embossing, water repellent processing, ultraviolet shielding agent, antibacterial agent, Various processes such as odorants, insect repellents, phosphorescent agents, retroreflective agents, and negative ion generators may be additionally applied.

  Using such an emery raising machine or a needle cloth raising machine, such a warp knitted product is raised on the surface of the surface layer of the warp knitted fabric so that the direction in which the force of the emery or the cloth is applied is parallel to the warp knitting direction. Since the sinker loop is difficult to be cut, a thin brushed warp knitted fabric in which chalk marks are hardly generated can be obtained. Moreover, since the thin nap-like warp knitted fabric obtained by such a manufacturing method does not use a synthetic resin such as aqueous polyurethane as in the prior art, the softness is not impaired.

  The emery raising machine and the needle cloth raising machine may be ordinary ones and are not particularly limited. In addition, when the direction in which the force of emery or the needle cloth is applied is not parallel to the warp knitting direction, the sinker loop is cut, and the thin brushed warp knitted fabric in which the chalk mark as the main object of the present invention is less likely to occur Is not preferable.

EXAMPLES Hereinafter, although an Example is given and this invention is demonstrated in detail, this invention is not limited at all by these. In addition, each physical property in an Example is measured with the following method.
Next, although the Example and comparative example of this invention are explained in full detail, this invention is not limited by these.

(1) Crimp rate CP
The test filament yarn is wound around a measuring machine having a circumference of 1.125 m to prepare a skein having a dryness of 3333 dtex.
The skein is suspended from a hanging nail of the scale plate, an initial load of 6 g is applied to the lower part thereof, and a length L0 of the skein when a load of 600 g is further applied is measured. Immediately thereafter, the load is removed from the skein, the scale plate is removed from the hanging nail, and the skein is immersed in boiling water for 30 minutes to develop crimps. The skein after the boiling water treatment is taken out from the boiling water, the moisture contained in the skein is absorbed and removed by a filter paper, and air-dried at room temperature for 24 hours. The air-dried skein is hung on a hanging nail of the scale plate, a load of 600 g is applied to the lower part, the skein length L1a is measured after 1 minute, the load is removed from the skein, and the skein after 1 minute. The length L2a is measured. The crimp rate (CP) of the test filament yarn is calculated by the following formula.
CP (%) = ((L1a−L2a) / L0) × 100
(2) Chalk mark Three testers visually judged the chalk mark in appearance. It was evaluated in two stages of “Yes” and “No” in terms of chalk marks.
(3) Textile appearance The appearance was visually determined by three testers. In terms of the fabric-like appearance, it was evaluated in two stages, “Yes” and “No”.
(4) Orientation of sinker loop When the surface of the surface layer textured part of the knitted fabric is photographed (200 times) and the orientation angle of the sinker loop is within 30 degrees with respect to the warp direction, it is "oriented in the warp direction." In other cases, the evaluation was made in two stages, “not oriented in the warp direction”.
(5) Length of the sinker loop The surface of the surface texture portion of the knitted fabric was photographed (200 times), the length of the sinker loop was measured at n: 3 points, and the average value was calculated.

[Example 1]
Using a tricot knitting machine (Karl Mayer, 28 gauge), a polyethylene terephthalate false twisted crimped yarn of 110 dtex / 24 filament (crimp rate 40%, structure: 10/34) on the back ridge forming the ground structure portion, A 167 dtex / 48 filament polyethylene terephthalate false twisted crimped yarn (crimp rate 12%, structure: 00/01) on the middle ridge forming the surface layer structure portion and 167 dtex / 48 filament on the front ridge forming the surface layer structure portion at the same time The polyethylene terephthalate false twisted crimped yarn (crimp rate 12%, structure: 10/11) was arranged to obtain a warp knitted fabric, which was then dyed by a conventional method. In the obtained warp knitted fabric, the sinker loop appearing on the surface of the surface texture portion was oriented in the warp direction as shown in FIG. Further, the length of the sinker loop appearing on the surface was 1.02 mm, and the fabric-like appearance was “present”. When the warp knitted fabric was put into an emery processing machine provided with sandpaper having a particle size of 240, the sinker loop was not cut and the chalk mark was “none”.

[Example 2]
Using a tricot knitting machine (Karl Mayer, 28 gauge), a polyethylene terephthalate false twisted crimped yarn of 110 dtex / 24 filament (crimp rate 40%, structure: 10/23) on the back ridge forming the ground structure portion, A 167 dtex / 48 filament polyethylene terephthalate false twisted crimped yarn (crimp rate 12%, structure: 11/33/11/11) on the middle heel forming the surface layer textured part, and at the same time the front ridge forming the surface layer textured part A 167 dtex / 48 filament polyethylene terephthalate false-twisted crimped yarn (crimp rate 12%, structure: 00/00/00/22) was provided to obtain a warp knitted fabric, which was then dyed by a conventional method. In the obtained warp knitted fabric, the sinker loop appearing on the surface of the surface layer structure portion was oriented in the warp direction. The length of the sinker loop that appeared on the surface was 2.30 mm, and the fabric-like appearance was “present”. When the warp knitted fabric was put into an emery processing machine provided with sandpaper having a particle size of 240, the sinker loop was not cut and the chalk mark was “none”.

[Example 3]
Using a tricot knitting machine (Karlmeier, 28 gauge), a 33 dtex / 12 filament polyethylene terephthalate multifilament yarn (structure: 10/34) is used as the back heel to form the ground texture part, and a middle heel is used to form the surface texture part. 33 dtex / 12 filament polyethylene terephthalate multifilament yarn (structure: 00/01) and 167 dtex / 48 filament polyethylene terephthalate multifilament yarn (structure: 10/11) are arranged on the front ridge forming the surface layer structure at the same time. After obtaining a knitted fabric, it was dyed by a conventional method. In the obtained warp knitted fabric, the sinker loop appearing on the surface of the surface layer structure portion was oriented in the warp direction. Further, the length of the sinker loop appearing on the surface was 1.02 mm, and the fabric-like appearance was “none”. When the warp knitted fabric was put into an emery processing machine provided with sandpaper having a particle size of 240, the sinker loop was not cut and the chalk mark was “none”.

[Comparative Example 1]
Using a tricot knitting machine (Karl Meyer, 28 gauge), on the back ridge forming the ground tissue part, 84 dtex / 36 filament polyethylene terephthalate multifilament yarn (structure: 10/12), on the middle ridge forming the surface layer structure part 84 dtex / 36-filament polyethylene terephthalate multifilament yarn (structure: 10/23) and 84 dtex / 36-filament polyethylene terephthalate multifilament yarn (structure: 10/56) are arranged on the front ridge that simultaneously forms the surface texture portion. After obtaining a knitted fabric, it was dyed by a conventional method. In the obtained warp knitted fabric, the sinker loop that appeared on the surface of the surface layer structure portion was not oriented in the warp direction. The length of the sinker loop that appeared on the surface was 4.56 mm, and the fabric-like appearance was “none”. When the warp knitted fabric was put into an emery processing machine provided with sandpaper having a particle size of 240, the sinker loop was cut and the chalk mark was “Yes”.

  ADVANTAGE OF THE INVENTION According to this invention, the manufacturing method of the thin nap-like warp knitted fabric which is excellent in soft property and a choke mark is hard to generate | occur | produce, and the warp knitted fabric for that are provided. The thin brushed warp knitted fabric obtained by the present invention is excellent in softness and hardly generates chalk marks, and therefore can be suitably used for applications such as interior members such as car seat members and chair upholstery. The utility value is extremely large.

2 is a surface photograph of a surface texture portion of a warp knitted fabric obtained in Example 1. FIG.

Claims (8)

Made of an organic fiber yarns, a warp knitted fabric having a ground structure portion and the surface layer structure section, it said sinker loops appear on the surface of the surface layer structure portion and surface layer structure section, the minimum unit display of repetitive motion of the guide points A warp knitted fabric characterized in that the sinker loop is oriented in the warp direction by knitting at 00/01, 10/11, 11/33/11/11 or 00/00/00/22 .   The warp knitted fabric according to claim 1, wherein the length of the sinker loop appearing on the surface is in the range of 1.0 to 50 mm.   The warp knitted fabric according to claim 1 or 2, wherein the organic fiber yarn is untwisted.   The warp knitted fabric according to any one of claims 1 to 3, wherein the total fineness A of the organic fiber yarn (a) constituting the ground texture portion is in the range of 20 to 200 dtex.   The warp knitted fabric according to any one of claims 1 to 4, wherein the total fineness B of the organic fiber yarn (b) constituting the surface layer structure portion is in the range of 50 to 1000 dtex.   The ratio A / B between the total fineness A of the organic fiber yarn (a) and the total fineness B of the organic fiber yarn (b) is in the range of 0.2 to 0.6. The warp knitted fabric described.   The warp knitted fabric according to any one of claims 1 to 6, wherein the surface of the surface layer structure portion has a fabric-like appearance.   The surface layer structure of the warp knitted fabric according to any one of claims 1 to 7, using an emery raising machine or a needle cloth raising machine so that the direction in which the force of emery or the cloth is applied is parallel to the warp knitting direction. A method for producing a thin nap-like warp knitted fabric, characterized by performing napping treatment on the surface of the part.

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