JPH0361785B2 - - Google Patents

Description

[Detailed description of the invention]

(Industrial Application Field) The present invention relates to a raised warp knitted fabric. (Prior Art) Conventionally, in thermal clothing, cold protection clothing, ski wear, etc., in order to obtain the necessary heat retention, a heat insulating material such as a non-woven fabric is generally layered between the outer fabric and the lining. Simply layering the heat insulators requires time and effort to sew them, and the inconvenience that only the heat insulators move during wear tends to occur. For this reason, a method of fixing the heat insulating material and the outer fabric and/or the lining by quilting or partial adhesion (or fusion) has been used. This method not only incurs additional costs, but also reduces the thickness of the fixed area, which reduces the air content and reduces the air content.
It has the disadvantage that the heat retention of that part decreases. Furthermore, in order to maintain the strength of the heat insulating material, a material with a weight exceeding a certain level is used, resulting in
It also had drawbacks such as being heavy. In conventional insulation materials (non-woven fabrics, fiber webs, etc.), the fibers and shafts are generally aligned perpendicular to the thickness direction, so when pressure is applied in the thickness direction, the thickness easily decreases and the insulation performance deteriorates. It also had its drawbacks. Furthermore, a so-called raised fabric having a raised layer on one side or both sides of the fabric has a low heat retention property relative to its weight and is not practical. In addition, in order to reduce the weight of the raised fabric, simply raising the conventionally known mesh fabric does not provide a sublime raised layer, and the density of the raised fabric is also low, so it is impossible to achieve sufficient heat retention. It cannot be made with a certain raised fabric. (Object of the invention) The object of the present invention is to improve the conventional drawbacks,
By using a raised fabric with a new structure, it has an extremely high air content, and is therefore lightweight and has high heat retention.
Moreover, even if pressure is applied in the thickness direction, the fluffs are arranged closely in the thickness direction, so the thickness does not easily decrease, and the purpose is to provide a raised warp knitted fabric that maintains heat retention. (Structure of the Invention) The present invention provides a warp knitted fabric knitted by three or more reeds, in which the ground weave part knitted by two or more reeds on the rear side has a mesh-like structure. However, the mesh-like structure is knitted by arranging thread omissions at appropriate intervals on each of the two or more reeds on the rear side, thereby forming an openwork without underlap, and disposing the openwork. The raised warp knitted fabric is characterized in that a raised layer formed by raising the yarn fed to the front reed is disposed on at least one side of the ground weave portion formed by the method. FIGS. 1A and 1B are cross-sectional views schematically showing the cross section of a raised warp knitted fabric that is an embodiment of the present invention, and FIG. 1C is a perspective view showing a warp knitted fabric corresponding to FIG. 1A. . As shown in FIG. 1, the raised warp knitted fabric of the present invention is
It is important that the ground structure 2 that maintains the raised layers 1, 1' has a mesh structure. The mesh-like structure is formed by forming openwork 3 in the ground structure 2 of the knitted fabric and arranging the openwork as appropriate. The warp knitted fabric of the present invention has raised layers 1 and 1', and the raised layers are formed on at least one side of the ground weave, and may be formed on both sides as shown in FIG. It is possible. Further, the raised layer is formed substantially uniformly not only in the open-cut portions but also in the substantial thread portions forming the mesh structure (that is, the non-open-cut portions). In order to form such a raised layer, it cannot be obtained by simply raising a knitted fabric knitted into a mesh structure, as is conventionally known. That is, the warp-knitted fabric of the present invention is obtained by a warp-knitted fabric knitted into a special structure in which the ground structure has a mesh-like structure after being subjected to the raising treatment. The warp knitted fabric used in the present invention is knitted using three or more reeds, and among the three or more reeds, two or more reeds on the rear side (i.e., middle reeds, The organization is organized by
After the nap is raised, stitches that do not have underlaps that serve as openwork are formed, and these stitches that do not have underlaps are arranged at appropriate locations. In order to form a stitch without underlap using two or more reeds, use threads from each reed that are threaded at appropriate intervals, and knit by swinging the two reeds in opposite directions. . Using a 3-reed tricot knitting machine, the front reed weave is 10/45, the middle reed weave is 23/21/10/12 with 1 in 1 mistake, and the back reed and weave is 10/1 with 1 in 1 mistake. An example of knitting using the 12/23/21 knitting method will be explained. Figure 2 is a diagram illustrating an example of threading a reed when knitting such a warp knitted fabric, and shows an example of a 1-in-1 mistake. Showing the reed. In this case, whether the needle removal positions of the middle reed and the back reed are relatively the same or different is determined by the shape of the mesh structure. As shown in FIG. 2, by swinging the threaded reeds in opposite directions and knitting, it is possible to form a part without underlap. FIG. 3 is a plan view showing the knitting method of the knitted fabric thus formed, in which the threads are removed every other thread as shown in FIG. Therefore, a stitch without underlap can be formed as shown in 3'. (still,
In FIG. 3, the yarn feeding by the front reed is not shown.) On the other hand, the yarn feeding by the front reed is swung at a ratio of 10/45, and is knitted into a structure with long underlaps (floating yarns). Before raising, the warp knitted fabric knitted in this way does not yet have a mesh-like structure due to the texture fed to the front reed, but the yarn supplied to the front reed is mainly raised and
In the ground structure portion left after cutting, the stitches 3' having no underlap are opened to form open stitches and have a mesh structure. Although the yarn feeding to the front reed is performed in a full set (threading all yarns), the yarn may be removed as appropriate. Various mesh-like structures are used for the ground texture, depending on the arrangement of the openwork, but the openwork has a rectangular shape and is arranged neatly in a checkerboard pattern in the longitudinal and latitudinal directions. Those having a mesh-like structure are preferable from the viewpoint of napping properties and dimensional stability in the longitudinal and latitudinal directions. Further, the material of the yarn used in the present invention is not particularly limited, but if a raised warp knitted fabric is used as a heat-retaining filling and a sweat absorbing function is also required, the yarn made of water-absorbent fibers may be used. It can be used for , and/or the threads forming the ground weave.In particular, in the case of polyester fibers, Wellkey (Teijin trademark) can also be used with water-absorbing polyester fibers. It is possible. In addition, the single yarn denier of the yarn to be used can be selected as appropriate depending on the application, but in order to make the surface touch of the nap soft, the single yarn denier should be fine, 1.5 de or less, and vice versa. In order to impart elastic properties to the raised layer, a thick denier of 3 to 10 de is used. Furthermore, this warp knitted fabric is raised, but since a mesh-like structure has not yet been formed on the gray fabric after leaving the knitting machine, the raising can be carried out by a normal method. (Action of the invention) Although the raised warp knitted fabric obtained in this way has a mesh-like structure in the ground weave, there is a substantially uniform raised layer on the outside of the openwork, which is a forming factor of the mesh-like structure. , it is lightweight and extremely bulky. In particular, when both sides are raised, higher bulkiness can be obtained, and at the same time, the ground structure of the mesh-like structure can be completely covered, so that it can be used as a new structure for batting. In other words, conventional batting mainly uses non-woven fabrics, but these non-woven fabrics have been treated with adhesives, fusing materials, and even quilting to give them strength, but these all have an impact on texture and texture. This was a cause of loss of bulk. If the raised warp knitted fabric of the present invention is used, these are unnecessary and an excellent heat retention effect can be obtained. In addition, in conventional batting, the fibers are arranged almost perpendicular to the thickness direction, so when pressure in the thickness direction is applied, the thickness easily decreases and the heat retention property tends to decrease. In warp knitted fabric, the raised fibers are arranged in the thickness direction, so it has a high resistance to pressure, and therefore has the characteristic of easily maintaining heat retention. Furthermore, if the raised layer is formed only on one side, the mesh-like structure will be visible on the other side, but depending on the application, this mesh-like structure can be used as a lining. Furthermore, in order to further improve the heat retention of the knitted fabric of the present invention, a metal or ceramic having a relatively low emissivity can be made into a thin film and adhered to the ground surface. For example, using the gray fabric used in the present invention, after scouring, a stainless steel alloy is attached to the needle loop side in a thin film by sputtering, and after dyeing, the sinker loop side is brushed until the yarn fed from the front reed is completely cut. You can get it. Example 1 A 28-gauge, 3-reed tricot machine was used, with 1 in 1 mistake for the back reed, 1 mistake and 1 in for the middle reed, and a full set for the front reed, each using polyester filament 75 denier. 36Filament is fed and the structure of the back reed is made on 10/12/23/
21. The structure of the middle reed is 23/21/10/12, the structure of the front reed is 10/45, and the respective runners (run-in) are 130, 131, and 261 cm, and the on-machine course density is
A regular loom was knitted at 45 cpi, dyed, and raised only on the front reed side until the threads on the front reed were almost completely cut, and finished and set so that the finished density was 52 cpi and 46 wpi. The weight of this knitted fabric is
An extremely light and bulky knitted fabric with a weight of 230 g/m ² and a thickness of 1.30 mm was obtained. Example 2 Using a 28-gauge, 3-reed tricotto machine, using the same thread as in Example 1, threading was done with 3 in 1 mistakes on the back reed and 1 mistake and 3 on the middle reed. In, the front reed is a full set,
The structure of the rear reed is 10/12/10/12/10/45, the composition of the middle reed is 45/43/45/43/45/10, and the structure of the front reed is 10/
45, with runners of 161, 191, and 301 cm, respectively, and an onboard density of 40 cpi. After dyeing, only the front reed side was brushed until the threads on the front reed were almost completely cut, resulting in a finished density of 42 cpi and 48 kwpi.
The basis weight of this edition and others is 319g/m ² and the thickness is 1.60mm.
A light knitted fabric with similar bulkiness was obtained, although it looked like a slightly stiffer fabric than in Example 1. Example 3 Using a 28-gauge, three-reed tricotto machine, polyester filament 75 denier 36 filament was used for the rear and middle reeds, and polyester hollow filament 75, which can be made porous by alkali treatment, was used for the front reed.
Example 2
Using the same thread as above, thread the rear reed structure 10/12/10/
34, structure of middle reed 45/43/45/10, structure of front reed
10/34, the runners of each reed are 203, 216, and 253cm respectively.
The onboard course density was set to 28 cpi, and NaOH
The threads of the front reed are made porous through processing, and then dyed.
Only the front reed side was brushed until the threads on the front reed were almost completely cut, and the finishing was set so that the finished density was 36 cpi and 36 wpi. The weight of this knitted fabric is
The weight was 168 g/m ² and the thickness was 1.00 mm. Example 4 Using a 28-gauge, three-reed tricotto machine, the structure of the rear reed was created using the same thread and threading as in Example 2.
10/12/10/12/23/34/32/34/32/21, Nakaregi organization 34/32/34/32/21/10/12/10/12/
23, The structure of the front reed is 10/67, and the runners of each reed are each
145, 145, and 355cm, and the onboard course density was organized at 40cpi. After dyeing, both sides are brushed until the threads of the front reed are completely cut, resulting in a finished density of 49 cpi and 35 wpi.
I finished it to look like this. The basis weight of this fabric is 225
g/m ² and thickness was 1.60 mm. Example 5 Using a 28-gauge, 3-reed tricotto machine, the same thread was used as in Example 2, and the structure of the rear reed was made on 10/23/10/
23/45/32/45/32, Zhongreo organization 45/32/45/
32/10/23/10/23, the structure of the front reed was 10/67, the runners of each reed were 159, 159, and 354 cm, and the onboard course density was 40 cpi. After dyeing, both sides were brushed until the threads of the front reed were almost completely cut, and the finished density was 46 cpi and 59 wpi.
The basis weight of this fabric was 347 g/m ² and the thickness was 2.00 mm. The results of the above examples are shown in Table 1.

【table】

[Table] Comparative Examples 1 to 3 As a comparative example, a tricot knitted fabric was knitted using a 28-gauge tricotto machine using the yarns shown in Table 2, and the data of the raised warp knitted fabric obtained by the napping treatment was shown in the second table. Shown in the table.

【table】 [Brief explanation of drawings]

FIGS. 1A and 1B are cross-sectional views schematically showing the cross section of a raised warp knitted fabric that is an embodiment of the present invention, and FIG. 1C is a perspective view showing a raised warp knitted fabric corresponding to FIG. 1A. , FIG. 2 is a diagram illustrating an example of threading a reed when knitting a warp knitted fabric, and FIG. 3 is a diagram illustrating a method of knitting the ground texture portion of the raised warp knitted fabric of the present invention. 1, 1'...Napped, 2...Ground texture, 3...Openwork.

Claims (1)

[Scope of Claims] 1. A warp knitted fabric knitted by three or more reeds, in which the ground portion knitted by two or more reeds on the rear side has a mesh-like structure, The mesh-like structure is formed by knitting two or more reeds on the rear side by arranging loose threads at appropriate intervals to form an open-cut pattern without underlap, and a fabric formed by arranging the open-cut stitches. A raised warp knitted fabric characterized in that a raised layer formed by raising yarns fed to a front reed is disposed on at least one side of a weave part. 2. The warp knitted fabric according to claim 1, wherein the openwork has a rectangular shape. 3. The warp knitted fabric according to claim 1, wherein both sides of the ground weave portion have raised layers.