JPS6323310B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an innovative method for raising woven or knitted materials.

Conventional techniques Conventional raising methods and equipment include methods of rubbing the surface of the fabric with sandpaper, methods of raising the fibers with a needle cloth raising machine, methods of creating a woven or knitted structure that makes it easy to form napped, and raising the fibers. As described in JP-A-55-128060, there is a method of cutting with a knife or a knife-like object to form raised naps. (shaped cross-section fiber)
There are methods such as applying high-pressure fluid treatment to the used woven or knitted fabric to fibrillate the fibers and raise them.

Problems to be Solved by the Invention The biggest drawback of the method of rubbing the surface of a woven or knitted fabric with sandpaper is that the fibers are cut and the woven or knitted fabric becomes weak. In addition, it is difficult to produce long naps, and in addition, the cut fibers fall off severely, producing dust, and the fabric weight is greatly reduced. Furthermore, there was also a quality defect in that the raising did not occur all over the body, only the areas where the weaving and knitting fibers were largely lifted were rubbed, and the areas near the valleys were not as raised. The object of the present invention is to provide a raising method that has fewer such drawbacks.

The method of raising the fibers with a cloth raising machine has the disadvantage that the fibers have to be passed through the cloth raising machine many times, resulting in a very high cost. In particular, this tendency has significantly increased costs for woven and knitted fabrics using ultrafine fibers. When a strong nap was applied in an attempt to increase efficiency, the nap became bunched and the quality deteriorated significantly. In some cases, the fibers were even cut, reducing the strength of the woven or knitted fabric. The object of the present invention is to provide a raising method that has fewer such drawbacks.

In addition, the sandpaper method and needle cloth napping work perpendicularly to the longitudinal direction of the fabric.
When weaving satin (5 or 8 pieces) suitable for napping, it is necessary to weave the weft to make it float, but when weaving at high speeds, this eliminates the weaving and gives the weft a certain degree of elasticity. Without this, defects such as rake will occur repeatedly and the weaving yield will be poor. for example,
This is a problem that occurs when using processed yarn for the warp and ultrafine fiber generation type fiber for the weft. On the other hand, if the warp is made of ultrafine fibers and the weft is made of false twisted yarn, this problem is very likely to occur. However, in conventional buff raising and clothing raising, floating fibers are arranged in the longitudinal direction, so that good and sufficiently effective raising cannot be achieved. In contrast, industrial napping is
I've never seen it before. The object of the present invention is to provide a new napping method that can sufficiently nap even such woven fabrics.

In the method where the structure of the woven or knitted fabric is such that it is easy to form naps, and the fibers are cut with a knife or knife-like object to form the naps, the structure of the woven or knitted fabric itself must be such that the naps will occur when making the woven or knitted fabric. Not only that, but the speed of weaving and knitting was extremely slow, resulting in low productivity and high costs. In addition, the piloerection itself was too uniform, and there was a drawback that it was impossible to erect the pilasters in a natural manner. The object of the present invention is to provide a raising method that has fewer such drawbacks.

As described in Japanese Patent Application Laid-Open No. 55-128060, high-pressure flow treatment is applied to woven and knitted fabrics using ordinary denier multi-lobed fibers that are easily split by high-pressure flow treatment (for example, Y-shaped cross-section fibers) to fibrillate the fibers. There is a method in the prior art for raising the fibers by raising the fibers, for example, using fibers with a Y-shaped cross section and a fin length to width ratio of 5:
1, jersey knit and pear, placed on a wire screen, once at 6895 KPa (1000 psi), twice at 13790 KPa (20000 psi),
Pass it 4 times at 17927KPa (2600psi), then repeat the same operation from the back side, and then repeat again from the front side. In this way, the only idea was to split the Y-type fibers on the surface. However, this method had the paradox of pushing the broken fibers back into the woven or knitted fabric. By specifying the density of piloerection,
Although it is expressed as if a high nap was obtained, the result was that the product was constantly turned inside out and the nap on the surface was forced into the interior using a high-pressure flow. Therefore, there was a problem of having to buff it again. In addition, this method of raising hair too many times is not an efficient method of raising hair; rather, the aim is to raise the hair with a thick root and a thin tip, which is rich in elasticity. The appearance lacked a sense of luxury, with many things getting tangled, and the number of naps had to be reduced compared to conventional naps (non-woven fabrics and woven and knitted fabrics) using ultra-fine fiber bundles.
The object of the present invention is to provide a raising method that has fewer such drawbacks.

Other purposes will become clear in the subsequent description.

Means for Solving the Problems The gist of the present invention is as follows. That is, (1) The weft or warp is a spun yarn or a filament yarn, and the weave is formed so that the number of floats is 3 or more with respect to the warp or weft, or the weave is formed such that the weft has a float structure in tricot knitting. Form a half or satin warp knitted fabric of yarn, arrange it so that the side with the floating structure (Side A) is the back side, and place the side with the floating structure (Side A)
From the opposite side (Side B) of the woven or knitted fabric (Side B), an ultra-high pressure fluid flow that does not completely cut the woven or knitted fabric by the fluid is applied from the small hole of the mouthpiece, so that the woven or knitted fabric has a floating structure (Side A). A method for raising a woven or knitted material, which comprises forming a raised layer mainly composed of fibers from yarns forming floats.

The present invention is based on new knowledge that has not even been detected in the past.The high-pressure fluid flow treatment represented by waterjet punch collides with the fibers on the surface of the fabric, and if the fibers are likely to form fibrils, If so, it was naturally thought that the fibers would become fibrillated and form raised pilings (on their surfaces) or tangles of fibers.

The present invention is an innovative raising method that addresses the blind spots of such conventional knowledge. First, the columnar flow in high-pressure fluid flow treatment is applied to a surface (A
(Usually, textured yarn such as false twisted yarn or ordinary fiber is used for the backing structure, but it may be a fiber that is easily fibrillated.) ), the surface with flying tissue, that is, the floating structure (Side A), is
If these are easily formed as loops (included in napped or napped), broken napped, or a mixture of these, the napped on the reverse side of the woven or knitted fabric treated with high-pressure fluid stream can be easily formed. This is based on the surprising new knowledge that it can be formed. Therefore, the importance of flying tissue and the impact of high-pressure fluid flow treatment on the opposite side of the surface to which flying tissue is applied, i.e.,
Attention must be paid to the importance of arranging surfaces with floating structures.

In addition, the present invention has discovered that ultrafine fibers exhibit particularly effective behavior in high-pressure fluid flow treatment than ordinary fibers, and has not only discovered that microfibers exhibit a particularly effective behavior when subjected to high-pressure fluid flow treatment, but also has developed a unique technology that utilizes this behavior by skillfully arranging them in a floating structure. Gender must be noticed. Also, when applied to ultra-fine fiber generation type fibers, the part from the fibers that does not form floats, that is, the part of the base (corresponding to the back)
is destroyed by high-pressure fluid flow treatment,
It was discovered that there is an ability to split into ultra-fine fibers and generate ultra-fine fibers, and not only that, but also skillfully utilizes it and arranges it at least in the floating part,
Attention must be paid to the new point of generating ultrafine fibers and forming raised naps of the ultrafine fibers. It should be noted that when the ultrafine fibers are raised, they exhibit a good touch and suede effect, and they also have the great advantage of being cut while being raised by water flow, forming a nice raised nap with one end cut. In particular, when it comes to the combination of textured yarns such as false twisted yarns and products with low elongation by heat setting (such as Bleria yarns) with ordinary yarns that use yarns for the ground weave, the super Even with high-pressure fluid flow treatment, the ground texture is highly firm, preferentially raised, and strongly affected by water flow. The importance of these combinations and behaviors must be noted.

The expression "floating" is used for weaving and knitting, but plain weave has a structure where one piece (strand) floats and one piece sinks, while 5-ply satin has a structure where four pieces (strand) float and one piece (strand) sinks. The structure is in place. Similarly, the 8-sheet satin has a broken number of 7 and the diagonal has 3. The present invention targets woven or knitted fabrics with structures that are floating or have many floating elements, and we have discovered a specific structure that produces the special effects as outlined above.

If you compare it with cloth raising, in cloth raising, such floating fibers are pulled from the front side with a needle to the front side and pulled out, but in the present invention, it is completely opposite, and it is raised on the back side (side B). It is possible to extrude and raise the nap by high-pressure fluid flow treatment without using a needle. At that time, there is no problem even if the fibers raised on the opposite side are cut and become raised like a cut. In the present invention, there is no need to use two types of needles such as Kell needles and Kiki needles. Raising oil treatment is not necessarily necessary. There is also no wear on the needles that would affect the napping properties. Moreover, it is truly innovative in that it is effective not only for floating weft yarns but also for woven or knitted fabrics with floating weft yarns.

Next, the influence of reflected flow, a new finding in high-pressure fluid flow processing, will be explained. Note that the high-pressure fluid flow treatment referred to here can use either gas or liquid, and known methods can be used. However, water is most preferable from the point of view of economy and safety.

In high-pressure fluid flow processing, a wire mesh is often used to convey the sheet, but when the pressure is extremely high, the high-pressure fluid flow that penetrates the fabric often bounces off the wire of the wire mesh. In the past, no consideration was given to this issue. Such a reflected flow will push the fibers raised on the back side or the effective microfibers to the front side, which is not fully desirable. Of course, if the fluid hits the mesh exactly, there will be no reflected flow, but
The finer the mesh, the less likely it is.

Based on the many discoveries of the present invention and its special applications, the knowledge of reflected flows was discovered for the first time. A method and apparatus for avoiding these is shown in FIG. In FIG. 1, even if a woven or knitted fabric is waterjet punched, the penetrating fluid can be successfully transported and processed without hitting the wire mesh. When a sufficiently long conveyor belt or net is rotated as shown in FIG. 1, the fibrous sheet, such as a woven or knitted fabric, can be moved under the fluid without slipping. In Fig. 1, numeral 1 indicates a mouthpiece holder for a water jet punch. 2 indicates the cap. 3 is the water pressure for the water jet on the back of the mouthpiece (it is not limited to water only, so it is correctly called fluid pressure, but in the present invention it may be abbreviated as such hereinafter).
It is a gauge installed to measure the 4 is designed to cope with the swing of the entire water jet punch nozzle (X-axis swing and XY-axis swing).
Formed with a flexible hose to convey water. 5 is a water pipe. 6 means the pump that sends water to it. The filter part is omitted. 7 is a slit-shaped space that is protected from water jet flow, 8 is a belt conveyor (feed part),
9 is a belt conveyor (delivery section), and 10 is a support stand that supports the running cloth 11. However, the above-mentioned slit-shaped space 7 is provided in the support stand 10 so that it does not collide with the water jet. 11 shows a roll shape, but it is a rolled cloth. 12 is a rotating roll that drives a belt conveyor in the feed section. 13 is a rotating roll that drives a belt conveyor in the delivery section.

This is because it is preferable to hold down the cloth on the conveyor because of the strong water flow, which can reliably prevent or reduce the hanging of the cloth.
In this way, reflected currents are avoided.

Appropriate selection of fluid pressure is necessary in the present invention. If it's too weak, it won't be useful for brushing. However, once you know the present invention, it is easy to select an appropriate water pressure (fluid pressure). However, if it is too strong, the entire fabric will break, so
You can choose from a range of options up to amputation. This fluid is different from ordinary tap water and is as dangerous as a knife or needle, so great care must be taken when handling it. However, this does not impede the effectiveness of the present invention. In the present invention, preferably,
The pressure is 120Kg/cm2 or ^more . The woven or knitted fabric thus obtained can be used in all kinds of fields such as clothing, non-clothing, and industrial fields.

Effects of the Invention The effects of the present invention are listed below.

Fibers are less likely to break, and woven or knitted fabrics do not become weak.

Easy to produce long hair.

Regardless of the woven or knitted structure, overall napping is possible.

It is advantageous in terms of cost because it does not need to be run through a napping machine many times.

A natural-looking nap is possible.

The number of pilasters can be maintained at a high level, giving the pilaster a luxurious feel.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram showing a napping device used in the napping method for woven or knitted fabrics according to the present invention. DESCRIPTION OF SYMBOLS 1... Water jet punch base holder, 2... Base, 3... Gauge, 4... Flexible hose, 5... Water pipe, 6... Pump, 7...
...Slit-shaped space, 8... Belt conveyor (feed section), 9... Belt conveyor (delivery section), 10... Support stand, 11... Cloth material.

Claims (1)

[Scope of Claims] 1 The weft or warp is a spun yarn or a filament yarn, and the weave is formed so that the number of floats is 3 or more with respect to the warp or weft, or the float is formed in tricot knitting. The structured yarns are arranged to form a half or satin warp knitted fabric, the side with the floating structure (side A) is the back side, and the side with the floating structure (side A) is placed on the opposite side (side B). ), an ultra-high pressure fluid flow that does not completely cut the woven or knitted fabric by the fluid is applied from the small hole of the base, so that the surface (side A) of the woven or knitted fabric has a floating structure.
A method for raising a woven or knitted material, which comprises forming a raised layer mainly composed of fibers from yarns forming floats. 2. A woven or knitted fabric made of a spun yarn or multifilament yarn A consisting of a type of composite fiber that generates fibers of 0.4 denier or less or ultrafine fibers of 0.4 denier or less and a spun yarn or multifilament yarn B consisting of fibers of 0.7 denier or more, forming a woven or knitted fabric;
In the case of woven fabrics, a torn diagonal pattern or satin is formed so that the yarn A containing the ultrafine fibers forms a floating part, and in the case of knitted fabrics, the yarn A containing the ultrafine fibers forms a floating part. The method for raising a woven or knitted fabric according to claim 1, wherein the woven or knitted fabric is made of tricot satin or tricot half.