JPH0478738B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Technical Field of the Invention) The present invention relates to a special napped knitted fabric that is difficult to shed and has different napped lengths. (Prior art and its problems) Traditionally, single-sided napped knitted fabrics have a cut pile of V.
It is held in knitted fabrics in the shape of a W-shape or a W-shape, and is widely used because it has a uniform nap length and a surface with a tight luster. However, such single-sided raised fabrics have the drawbacks that they tend to shed hair and attract dust during sewing or wearing, and they also lack a firm texture. Conventionally, in order to change the surface of such pile knitted fabrics, the surface was embossed with an engraving roll, the fluff was partially collapsed to give a pattern, and fibers with different resistance to chemicals and heat were used. By dissolving and removing one of the fibers of the napped knitted fabric, the surface napped surface can be made uneven, the fluff quality can be changed, or the number of warp and weft yarns can be changed to create a woven structure. There are some that have been twisted to create the appearance of ups and downs in the fluff. However, although these methods can change the surface, they have the drawback of destroying the firm luster and soft touch of the napped product, and the uneven pattern is too large or too uniform. Furthermore, it had the disadvantage of being inferior in bulk height. On the other hand, as a special pile fabric, there is a double-sided folded fabric (Japanese Patent Application Laid-Open No. 57-47945), which is made by squeezing or rolling a fabric with ultra-fine piles using a jet dyeing machine or the like to develop piles on the back side. The nap on the surface of such a fabric was highly flexible and stiff, and there was no improvement in shedding or dust adhesion on the surface. (Objective of the invention) The napped knitted fabric of the present invention has no shedding, has an irregular pattern with many surface changes, is hard to attract dust, has a firm texture, has a soft touch on the surface, and has a soft texture on the back side. It has the characteristic of being lumpy. Further, according to the present invention, such napped knitted fabrics can be produced extremely efficiently and stably. (Structure of the Invention) (1) A knitted fabric having raised naps made of cut piles on its surface, in which the pile length of the cut piles and the grasping state of the base fabric structure are irregular, and a portion of the fibers constituting the cut piles constitutes a ridge on the back side of the special napped knitted fabric, and the ridge is composed of piles having random lengths and having multidirectional properties. (Description of structure) The napped knitted fabric of the present invention is similar to conventional knitted fabrics having napped piles made of cut piles on the front surface, but the pile length of the napped piles on the front side is irregular and has ridges on the back side. It is distinctive in this respect. The cut pile in the present invention refers to one that is held in the structure of a knitted fabric, and 10 to 90%/cm ² , particularly 40 to 70%/cm ² of the fibers that make up the pile constitute the ridges on the back side. It is preferable to do so in order to achieve the object of the present invention. If the amount of pile constituting the ridges on the back side is too small, the above-mentioned surface nap characteristics and firm texture cannot be obtained, and if it is too large, the pile on the back side will be too disordered, resulting in poor quality. Such ridges are composed of piles of random length with multidirectionality, for example, some front piles have a central part, and some piles have part or all of them protruding toward the back side near their roots. The ridges are formed by the ridges. As a result, the pile on the surface is gripped by the base fabric in a so-called lame state, and there is no regularity in the gripping state and the pile length. The ridges in the present invention are fiber-like structures that protrude from the back side of the knitted fabric made of the pile, and protrude in the form of stripes or dots. There are fibers that make up the base fabric of knitted fabrics. The rugged feel and firm texture of the present invention are achieved by these ridges. The structure of the napped knitted fabric of the present invention is shown in the drawing.
As shown in the figure. FIG. 2 shows a raised structure found in a conventional knitted fabric with raised raised cut piles. As can be seen from the figure, not only is there no regularity in the pile length of the raised pile of the present invention, but one end of the cut pile protrudes to the back surface, and in some places, it can be seen that it forms ridges together with the base fabric fibers. . Such a raised state presents a characteristic pattern on the front and back surfaces of the knitted fabric, which is clearly different from the regular pattern formed by embossing or knitted fabric fibers. Moreover, the surface touch of the napped knitted fabric of the present invention is clearly different between the front and back sides. In other words, the surface is soft, but the back side has a rugged feel, creating a special texture, providing an extremely tasteful knitted fabric. When the fiber state of the ridges on the back side, which is a characteristic of the napped knitted fabric of the present invention, is observed under a microscope, it is as shown in Fig. 3. As can be seen from Figure 3, the fibers are present in clusters covering the knitted fabrics, whereas in the conventional single-sided napped knitted fabric (Figure 2), the fibers of the knitted fabric are neat as shown in Figure 4. be observed. Figure 5 is the first
FIG. 4 is a perspective view of the ridges shown in the figure and FIG. 3 as seen with a microscope X20. Although the present invention is not limited to the base fabric or pile material, for example, polyester fibers, polyamide fibers, rayon fibers, etc. can be applied. Typical examples of knitted fabrics having a raised surface made of cut pile as used in the present invention include velvet, velvet, Corten, cotton, velor, moquette, plastic, seal, terremp,
Examples include cloth fasteners, among which those having a structure of a double woven fabric or a warp knitted fabric are preferred. As a method for producing such a napped knitted fabric, for example, the surface of a single-sided napped knitted fabric made of cut pile can be formed by needle punching, but a method of applying a high-pressure water jet is selected from the viewpoint of manufacturing efficiency and napped adjustment controllability. Ru. First, a single-sided napped knitted fabric made of cut pile is formed, and this is set in the form of a spread on a support such as a wire mesh or a perforated plate that has a drainage mechanism, and is exposed to a high-pressure water stream, or is exposed to a high-pressure water stream while being transferred. put on. In this case, it is particularly preferable to use a wire gauze having a mesh size of 50 to 120 as the support in order to form ridges suitable for achieving the object of the present invention. If it is less than 50 meshes, the ridges will be too rough, and if it exceeds 120 meshes, it will be difficult to form ridges. The high pressure water treatment employed in the present invention may be batch or continuous. This method also has the feature that it is relatively easy to set the pattern and appearance that appear on the surface. For example, when performing batch-type high-pressure water jet treatment, the nozzle can be set to a certain pattern state, and by intermittently transporting the knitted fabric in conjunction with the treatment, a pattern with good reproducibility can be imparted. This method has the feature that it is relatively easy to form dot-shaped ridges. Furthermore, in the case of continuous processing, the water flow from the fixed nozzle acts continuously on the transferred knitted fabric, making it easy to impart a striped pattern. Of course, the nozzle can also be set on the outer peripheral surface of a rotating body (including a circular body and a polygonal body) (in some cases, water is ejected only when the nozzle faces the knitted fabric), and in this case, the nozzle can be installed continuously. A certain pattern can be imparted to the knitted fabric by high-pressure water jet treatment while transferring the fabric. This high-pressure water stream has a jet nozzle diameter of approximately 0.1~
This water stream is obtained by ejecting water under a pressure of approximately 10 to 150 kg/ ^cm2 from a pore of approximately 0.7 mmφ.By changing the nozzle diameter, jet pressure, and nozzle arrangement, you can adjust the appearance of the pilaf and the wind. In this case, the degree of grip on the textile tissue can be easily adjusted. Although it is possible to use a high-pressure water stream in a range other than the above-mentioned conditions, it becomes difficult to achieve the purpose of the present invention if the range is too far out of range. You can also use heated water or other solvents, chemicals,
By substituting a processing liquid consisting of a dye and a processing agent, various chemical treatments, dyeing processing, shape fixing, and other treatments can be performed simultaneously. If heated water is used instead of water in the present invention,
Form fixation can be achieved at the same time as the ridges are formed, and furthermore, the object of the present invention is suitably achieved. (Effects of the Invention) The pile lengths are arranged in a finely random manner, making it difficult for dust to adhere to it when worn and making it easy to fall off. In particular, the difference in pile length on the surface presents a subtle pattern and exhibits an elegant luster and appearance. Moreover, it does not interfere with the conventional soft touch properties. The pile's gripping structure is complex and varied, making it difficult for hair to fall off during handling such as sewing or washing. The ridges on the back side are made up of multi-directional and random piles, giving it a rugged feel that is different from the soft touch on the front side. Easy to sew and cut with good lining. The manufacturing process is simple, product design is easy, and production is stable and trouble-free. Since it uses a high-pressure water stream, it is easy to control the surface pattern and the properties of the ridges on the back side. The present invention will be further explained below with reference to Examples. Example 1 A velvet fabric as described below was woven using polyester single fibers. Warp thread: 100D-36F 130T/M Weft thread: 100D-36F 400T/M Temporarily twisted thread Pile thread: 110D-36F 130T/M The base fabric is woven with one warp thread alternately, and the pile thread is cut on the machine. , created velvet fabric. The density of the raw material is 26 vertically x 40 horizontally/cm. The above-mentioned gray fabric was subjected to relax refinement using an overflow jet dyeing machine according to a conventional method, and then dyed to dark blue using a star dyeing machine. Next, this fabric was passed through a high-pressure water nozzle with a nozzle diameter of 0.13 mmφ to 0.6 mm.
Arrange 1,370 pieces at intervals in the width direction of the knitted fabric, spread the knitted fabric, and place 80 pieces with the raised pile portion facing up.
Place it on the mesh wire net conveyor belt 2
While transporting at a speed of m/min, the nozzle was fixed and 70℃ hot water was sprayed for 40mm at a spray pressure of 95Kg/ ^cm2 .
It was sprayed from a height of , and then finished in the usual manner. Next, as a comparative example, the same gray fabric as in the above example was used and finished without high-pressure water treatment (Comparative Example 1). Furthermore, as a comparative example, velvet fabrics (comparative example 2) were made in which embossing (160° C., 20 kg/cm ² , polka dot engraving with a diameter of 5 mmφ) was performed instead of high-pressure water jet. All finished products had a width of 93 cm and a weave density of 29 x 43 threads/cm. The results are shown in Table 1. [Thickness] in the table: Unit (mm); Measured using a dial thickness meter (manufactured by Ozaki Seisakusho Co., Ltd.). [Glossy raw]: The presence or absence of gloss was observed under direct sunlight at different angles. ○: Glossy. ×: Lack of luster. [Light loss]: Unit (g): Using each finished product, lining was attached, and the same person and the same sewing machine worked from cutting to sewing, and the hair loss was measured until the end of sewing. To measure hair loss, a sheet of Hatron paper was spread out before the work, and the work was performed on that paper.After the work was completed, the hair that had fallen on the paper was collected and measured. [Dust adhesion]: After the sewn products were worn for 7 hours/day for 20 days, the attached dust was observed with the naked eye and comparatively evaluated. ○: Extremely low. ×: Many. [Feel]: Comparative evaluation was made based on the feel with the hand. ○: Has waist. ×: Flexible and has no waist. The raised knitted fabric of the present invention has 44% on the surface and 56% on the surface.
It was a dense velvet fabric with a pile composition, bulky thickness, calm luster, and animal hair look, and was characterized by a firm texture and an extremely low amount of hair loss and dust adhesion. In addition, when we observed the 24 piles protruding from the back surface using a microscope, we found that the protruding points, lengths, and gripping methods were irregular, and these were intertwined with the base fabric fibers to create ridges (ridges). Width: approximately 0.5mm), and some of them were found to also form the nape on the back side. In comparison, all of the products had an extremely large amount of hair loss and dust adhesion, were also small in thickness, and were weak products. 【table】

[Brief explanation of drawings]

FIG. 1 is a schematic diagram showing the napped structure of the napped knitted fabric of the present invention, which has ridges at the lower part. FIG. 2 is a schematic diagram showing the napped structure of a conventional single-sided napped knitted fabric. Figure 3 is a microscopic observation of the shape of the fibers constituting the back side of the napped knitted fabric of the present invention as shown in Figure 1, and Figure 4 shows the back side of the conventional single-sided napped fabric (Figure 2). This is a microscopic observation of the fiber shape. FIG. 5 is a perspective view obtained by observing and copying the fiber shape of the ridges on the back side of FIG. 3 using a microscope (20 times magnification).

Claims (1)

[Claims] 1. A knitted fabric having raised naps made of cut piles on the surface, where there is no regularity in the pile length of the cut piles or the gripping state of the base fabric structure, and where some of the fibers constituting the cut piles extend over the ridges on the back side. 1. A special napped knitted fabric characterized in that the ridges are composed of multidirectional piles of random length.