JPS6035451B2 - Manufacturing method for napped woven and knitted fabrics - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a woven or knitted fabric having ultra-fine and elegant naps and a method for producing the same.

The invention also relates to a method for improving the deficiencies occurring in conventional woven and knitted fabrics. Conventionally, methods for making napped woven and knitted fabrics using fibers forming ultra-fine fibers are well known. One of the methods is polymeric mutual array fibers (by removing one component, ultrafine fibers continuous in the length direction can be obtained).
In other words, it is an application technology of polymeric mutual array fibers that uses what is commonly called island-sea type fibers and removes the sea while leaving the islands.
This technology has attracted attention from around the world, and many new products that did not exist before have been created and put on the market. In addition, improved technologies of this technology, peripheral technologies, or nearby similar technologies have recently become particularly common. This confirms the usefulness of polymeric interlayer array fibers, and it appears that this technology is moving towards becoming the ultimate technology. It can be said that one of them is the present invention. That is, the object of the present invention is; {1} To provide a woven or knitted fabric having an elegant napped luster. ■ To provide woven or knitted fabrics with no misalignment.

'3} To provide a woven or knitted fabric with a flexible surface touch.

(4) To provide a woven or knitted fabric that does not easily shed naps.The above object of the present invention is to provide a woven or knitted fabric with a rounded cross-sectional shape by using at least 80% of the island component. , pentagonal, and hexagonal ones are mixed, and these occupy the majority of the islands, and furthermore, the single fineness of the islands is approximately 0.02 ~
A multi-component fiber in the form of a mutual array of polymers having a denier of 0.3 denier is produced, a woven or knitted fabric is produced using the fibers in the napped portion, and then the sea component of the fiber is removed, or This is achieved by making a woven or knitted fabric without napped fibers, removing the sea component of the fibers, and then subjecting the fibers to a napped treatment.

Thus, the present invention has been found to be achieved through the use of a special form of polymeric interarray fibers.

If the island component is less than 80%, it will be difficult to stably obtain special fibers as described below, and even if they are obtained, the degree of achievement of the above purpose will be low. The special polymeric interarray fiber has the following configuration.

It has a sea and island configuration (cross section) as shown in FIGS. 1 and 2, with many island components surrounded by many other island components. The sea component exists interveningly between the island components. The denier of the island component is 0.3 to 0.02 denier, particularly preferably 0.25 to 0.06 from the viewpoint of dyeing.
The denier is the main denier (the main denier means that the present invention also includes the addition of a small amount of something deviating from this denier as an exception). Each island component has an overall rounded shape (including circles).

Its shape has rounded four-, five-, and hexagonal shapes. These are called 4, 5, and hexagons. Among the rounded shapes, there are 7, 8, 9... squares and 3, 2, 1, 0 squares. When we refer to a square as a regular square, we exclude triangles and smaller shapes. However, in the present invention, an oval or semicircular shape is referred to as a diagonal, and a teardrop-shaped circle with a slightly pointed part is referred to as a unigon, and is deliberately included in the classification of square shapes. .

It goes without saying that a circle can be considered to belong to a zero polygon. In the present invention, "rounded" means that there are no intersections between straight lines or between straight lines and curves. FIG. 3 shows the island component that makes up the main part of the piloerection, and shows examples of four, five, and hexagonal shapes.

These account for 50% or more of the total, particularly preferably 60% or more. Furthermore, in the present invention, at least two kinds of such tetragonal, pentagonal, and hexagonal shapes are mixed.
These horns give the piloere a unique luster. Figure 4 shows examples of shapes that do not belong to the above, such as 3, 2, and 0-gons.

In Figures 1 and 2, 4, 5, and hexagons account for 50% of the total.
It is clear that it includes more than The roundness makes it smooth to the touch. A fiber with a cross section like this (
An example of how to make the images (Figs. 1 and 2) is as follows.

That is, the core-sheath composite flow is 80% or more, particularly preferably 9
0% or more, but less than 20%, and is obtained by squeezing and discharging a large number of bottles gently through a funnel-shaped outlet according to the method disclosed in Japanese Patent Publication No. 1836/1973, which was invented by the present inventors. . At this time, in particular, the spinning viscosity of the core and the viscosity of the paper yarn, which is difficult, are made to be as close as possible. By doing this, the amount of sea components to be removed is extremely small, and the reduction in volume can be prevented to a minimum when removed.As a result, the woven or knitted fabric can be made without misalignment, and the naps can be removed. The surprising effect was that it became more difficult.

These drawbacks associated with conventional composite fibers (polymer interlayer fibers) that can be made extremely fine have been successfully solved. That's not all. The good thing about having less sea ingredients is that
There are fewer things to remove, which helps conserve resources.
In addition, less solvent is required to be removed, which helps conserve resources and prevent pollution, including its recovery. Not only that, but it also made it easier and faster to remove sea components. In particular, as a napped woven or knitted fabric, it is possible to create a fabric that has a unique effect due to the combination of elegant luster, appearance, and dyeing effects, and can have a smooth touch due to a specific cross section. It is thought that the slip resistance due to effects such as twisting due to this effect is an additional contribution. As the island component of the present invention, all spinnable polymers are applicable, but in particular, polyethylene terephthalate (orthochlorophenol) having an intrinsic viscosity of 0.65 to 0.85 at 25 oo
Polyester (system means main body) is preferred, in which case the sea component is 0.68 in 30q○ of toluene.
A polystyrene polymer having an intrinsic viscosity of 0.70 or more is preferred. The present invention has particularly excellent effects on the following paper knitted fabrics.

Namely, chocolate double satin (brushed) fabric, double velvet weave,
It is effective for velvet weaving, double-sided velvet binding, velveteen, kohl-heavy, flat and diagonal raised fabrics, tricot napped knitted fabrics, as well as other napped knitted fabrics and double-sided woven fabrics (napped fabrics). These are dyed after the sea component is removed. These are preferably used for various purposes such as various clothing, furniture, wall coverings, book covers, albums, bedding rugs, and industrial use. Next, preferred examples and comparative examples according to the present invention are shown, but the effectiveness of the present invention is
The present invention is not limited in any way by these, but rather brings about the following applications and developments.

Example 1 A 50-denier, 24-filament wired filament yarn of polyethylene terephthalate (registered trademark "Tetron") was used as the warp yarn and the second yarn, and a polymer interlayer array fiber was used as the first yarn. It consists of a polymer whose main components are polyethylene terephthalate as an island component and polystyrene as a sea component, the ratio of the island component is 80%, the ratio of the sea component is 20%, the number of islands is 16, and the fiber cross section is as shown in Figure 1 after the sea component is removed. The majority of the ultrafine fibers have a cross section of 4, 5, or hexagons as shown in Figure 3.

A filament yarn of 232 denier and 84 filaments was used to make a 5-ply horizontal satin fabric.

The density at this time is 134 pieces/inch vertically, 82 pieces/inch for the first chocolate.
The second chocolate was 82 pieces.

This woven fabric was introduced into hot water, subjected to desizing during warping and relaxing scouring, and then heat set drying at 18,000°C. As a result, Yute 9.0%, Chocolate 1
It shrunk by 6.0%. The set drying resulted in a cardboard-like stiff fabric, which was thoroughly washed four times with trichlorethylene to remove the sea component of the polymeric interlayer array fibers used for the first striped yarn, and then dried.

After applying a napping oil, the surface was passed through a cloth napping machine 14 times for napping to obtain a napping fabric covered with naps made of ultrafine fiber bundles as the first striped yarn.

This material was dyed light brown using a disperse dye using a circular pressure dyeing machine, dried after applying a finishing oil, and the back side was brushed, and the raised naps on the front surface had an unprecedented, elegant luster. To obtain a suede-like napped fabric with no slippage, good drapeability and pleatability, well-balanced vertical and vertical balance, large napped density, easy to generate chalk marks, smooth back side, and soft touch on the surface. Comparative Example The first total yarn was a polymeric mutually arranged fiber, consisting of a polymer whose main components were polyethylene terephthalate as an island component and polystyrene as a sea component, with an island component ratio of 50%.
A filament yarn of 232 denier and 82 filaments was used, with a sea component ratio of 50%, a number of islands of 16, and a cross section of the fine fibers after the sea component was removed, the majority of which was 0-gonal, that is, circular, as shown in Figure 4. The warp yarn and the second silk yarn were the same as those of Example 1, and the weaving structure and density were the same as in Example 1.

The specific processing was the same as in Example 1, resulting in a poor quality napped fabric with misalignment, coarse napped density, unbalanced texture, and wrinkles on the back side. , of a far superior dignity.

Example 2 A 75-denier, 24-filament raw filament yarn of polyethylene terephthalate (registered trademark "Tetron") was used as the warp and the second twill yarn, and a polymer interlayer array fiber was used as the first twill yarn. The fibers are composed of a polymer whose main components are polyethylene terephthalate as the island component and polystyrene as the sea component. As shown in the figure, the majority of the ultrafine fibers have a 4, 5, or hexagonal cross section.

A filament yarn of 232 denier and 84 filaments was used to make a 5-layer satin fabric with double layers of chocolate.

The density at this time is 119 vertical fibers/in, the first chocolate is 6
Z pieces/in, second chocolate 62 pieces/in.

This woven fabric was introduced into hot water, subjected to desizing during warping and relaxing scouring, and then heat set drying at 180°C. As a result, vertical 9.0%, chocolate 1
It shrunk by 6.0%. The set drying resulted in a cardboard-like stiff fabric, which was thoroughly washed four times with trichlorethylene to remove the sea component of the polymeric interlayer array fibers used for the first striped yarn, and then dried.

Then, after applying a napping oil, the surface was passed through a cloth napping machine 14 times to perform a napping process, thereby obtaining a napping fabric covered with naps made of the first twill yarn, the ultrafine fiber Higashi.

This product is dyed light brown using a disperse dye using a circular pressure dyeing machine, and dried after applying a finishing oil. A suede-recognized napped fabric with good elasticity, well-balanced vertical and vertical balance, large napped density, easy formation of chalk marks, smooth back side, and soft touch on the surface was obtained. Example 3 As the warp yarn and horizontal yarn of the base fabric,
A filament yarn of 100 denier and 24 filaments of polyethylene terephthalate is used, and the warp yarn forming the pile is made of polymer mutual array fibers (made of a polymer whose main component is polyethylene terephthalate as an island component and polystyrene as a sea component, with an island component ratio of 80). %, sea component ratio 20%
A filament of 100 denier and 24 filaments, with 16 Shimamoto fibers and a fiber cross section as shown in Figure 1, and after removing the sea component, the majority of the fibers are 4-, 5-, and hexagonal cross-sections as shown in Figure 3. The yarn was used to make a woven fabric with a double velvet structure as shown in FIG.

The density at this time was 64 vertical fibers/in for the base, 100 horizontal fibers/in for the base, and 42 vertical fibers/in for the pile. To explain the organization chart in Fig. 5, the portions marked with symbols on the organization chart indicate floating yarns.

G indicates the warp yarn of the base material, and A, B, C, and D indicate the warp yarns that will form the pile, and they use the same polymer interlayer fibers. This fabric was introduced into hot water, the size agent used during the weaving process was removed, and a relaxing process was performed. After drying, a solution of polyurethane in dimethylformamide with a concentration of 18% was coated from the back side, and after wet coagulation, it was dried. .

The amount of polyurethane deposited at this time was 23.8%. Next, this material was thoroughly washed three times with trichlorethylene to remove the sea component of the polymer mutually arranged fibers used for the pile, and after drying, it was dyed in a beige color using a disperse dye using a liquid jet pressure dyeing machine. did.

After dyeing, a softening agent and an antistatic agent were applied and drying was performed while wet combing.

The back surface was then lightly rubbed with sandpaper.

This produced a napped fabric with a soft touch with a unique graceful fluff, a large napped density, and easy to generate chalk marks.

Example 4 The threads used for the back tissue were polyethylene terephthalate (registered trademark "Tetron") of 50 denier and 24 denier.
A filament yarn with added filament is used, and the yarn used for the front structure is a polymeric mutually arranged fiber with an island component ratio of 9, consisting of a polymer whose main components are polyethylene terephthalate as an island component and polystyrene as a sea component.
0%, sea component ratio 10%, number of islands is 36, fiber cross section is similar to that shown in Figure 2, and 4 similar to that shown in Figure 3 after removing the sea component.
, 5, and hexagonal cross sections account for the majority of the ultrafine fibers.

Using a filament yarn of 75 denier and 15 filaments, a tricot satin fabric, generally referred to as 3×1 satin, was knitted using a two-piece tricot knitting machine. The gauge at this time was 28 inches, and the number of courses was 80/inch. This knitted fabric was introduced into hot water, subjected to relaxation scouring and shrinkage treatment, and then subjected to heat set drying at 18,000 °C.

This resulted in 26.3% surface seed shrinkage. The set drying resulted in a hard knitted fabric, which was thoroughly washed three times with trichlorethylene to remove the sea component of the polymer interlayer array fibers used for the front structure, and then dried.

Next, after applying a napping oil, the side (surface) where many microfibers are exposed is passed through a cloth napping machine 10 times, and then shirred.
/c, the lengths of the naps were made uniform and the looped naps were cut to obtain a napped cotton cloth covered with ultrafine fibers.

This product is dyed brown using a disperse dye using a liquid flow pressure dyeing machine, and dried after applying a finishing oil.It has a soft touch that has never been seen before, has a large nap density, and is easy to cause chalk marks. Obtained a unique ultra-high quality suede knitted fabric.

[Brief explanation of drawings]

FIG. 1 is a sketched photomicrograph of a cross-section of a particular polymeric interarray fiber according to the present invention. FIG. 2 is a sketch similar to FIG. 1 of a cross section of another specific polymeric mutual array according to the present invention. FIG. 3 is a sketch of the cross section of a specific ultrafine fiber according to the present invention, and is an example of a rounded four, five, or hexagonal shape. FIG. 4 shows a sketch of a conventional ultrafine fiber cross section not related to the present invention, including a rounded triangle and a two-dimensional sketch particularly defined in the present invention.
Examples of squares and zero-gons. FIG. 5 is an organization chart of a four-pile pile in Example 3. Figure-l Figure-1Z Figure-3 Figure-14 Box

Claims (1)

[Claims] 1. 80% or more of the island component is used, and two or more types of islands with rounded cross-sectional shapes such as 4, 5, and hexagons are mixed,
And these account for the majority of the islands, and furthermore, the single fineness of the islands is almost 0.
．． 02 to 0.3 denier, and (1) create a woven or knitted fabric using the fiber as a napped part, and then remove the sea component of the fiber. ,
or (2) a method for producing a napped woven or knitted fabric, which comprises making a napped woven or knitted fabric from the fibers, removing the sea component of the fibers, and then subjecting the fibers to a napped treatment.