JPS6290368A - Marking processing of raised fabric - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a method for forming and processing a durable raised fabric.

(b) Conventional technology Although the processing of raising fabrics with fluff has been commonly carried out for a long time, especially when the single yarn fineness of the fluff is less than 1 denier, even thermoplastic synthetic fibers cannot be used. Because the fibers are too soft, the durability of the mold is poor even when molded using a high-temperature, high-pressure embossing calendar, and the direction of the fuzz changes while the product is being worn, making the molding unclear. was. For this reason, there are no products that have been directly embossing and patterned on high-quality raised fabrics with a single filament fineness of 1 denier or less, and in most cases single filaments have been processed into 2 denier or more. .

(c) Problems to be Solved by the Invention The present invention has been made in view of the above-mentioned current situation, and is based on the invention. The purpose of this is to obtain a durable patterned fabric through processing.

(d) Means and action for solving the problems The present invention is as follows:
"For raised fabrics with fluff with a single yarn fineness of 1 denier or less,
Polyurethane resin emulsion converted to resin solid content: 1
The first step of drying after applying ~50%, the temperature is 160°C or higher,
The gist of the method is ``a processing method for forming a raised fabric, which is characterized by a second step of embossing calender processing at a nip pressure of 10 kg/cm or more, and a third step of hot water treatment at 40 to 100°C.'' be.

In other words, by applying a polyurethane resin to the raised fabric in advance before shaping it by embossing calendar processing, and treating it with warm water after shaping, it is possible to create a raised fabric with fluff of 1 denier or less. It provides durable molding.

The present invention will be explained in detail below.

In the present invention, a napped fabric having fluff with a single yarn fineness of 1 denier or less is used. The fabric here refers to woven fabrics, knitted fabrics, non-woven fabrics, etc., and on one side or both the front and back sides,
Short fibers or long fibers of synthetic fibers such as polyester fibers, polyamide fibers, and polyacrylic fibers having a single filament fineness of 1 denier or less are formed singly or in combination by raising or the like. Puffed fabrics with a single yarn fineness of 1 denier or less are susceptible to appearance, touch, and finger marks.

The texture is similar to natural suede, giving it a luxurious feel. In the present invention, fabrics having a nap of 2 denier or more are not targeted as fabrics to be processed.

First of all, the present invention begins with a raised fabric having fluff with a single yarn fineness of 1 denier or less as described above.

Polyurethane resin emulsion converted to resin solid content: 1
After applying ~50%, a first step of drying is performed. The reason why polyurethane resin is added to the raised fabric is to adjust the texture and to attach the part where the fluff is pressed down. If the amount of polyurethane resin adhered is less than 1% in solids,
The texture adjustment and adhesion of fluff are not sufficient, and if it exceeds 50%, even if adhesion of one fluff is sufficient.

The texture becomes too hard, and the characteristics of using ultrafine fibers with a single denier of 1 denier or less cannot be achieved. Preferably, the amount of solid content attached is 3 to 30%.

As the polyurethane resin, any of polyether type polyurethane, polyester type polyurethane, etc. which are generally used for finishing of fibers can be used.

Further, depending on the purpose, a thickener or a crosslinking agent may be used in combination. Furthermore, a coloring agent, a flame retardant, etc. may be used in combination as necessary. Application methods include spraying, coating, padding, etc.

Either method can be used. After applying it evenly, use a non-touch dryer, roller dryer, loop dryer, net dryer, etc. to
Dry at a temperature of 0°C.

Next, in the method of the present invention (9), the temperature is 160°C or higher.

A second step of embossing calender processing is performed at a nip pressure of 10 kg/am or more. The embossing calendar used here is a two- or three-roll calendar, a flatbed type calendar, or the like, which has a combination of unevenness on the roll surface. Also,
It is also possible to use rolls that are patterned only on the hard side, but in this case the other roll or bed must be made of a soft material such as cotton or paper. Temperature is 160℃ or higher 9 Usually 180-250
℃, but it is necessary to select a temperature that will not damage the thermoplastic synthetic fibers due to heat. However, since the processing time of ordinary embossing calendering is several seconds or less, it is often carried out near the melting temperature, and high-temperature molding is effective.

The nip pressure is 10 kg/am or more, and a pressure as high as possible is effective for molding. Generally, an embossing calender is used which applies a total load of about 10,000 kg to 100,000 kg to a fabric having a width of 1 m to 2 m. If the pattern is a line pattern, the fabric may be cut, so it is necessary to use a lower pressure than if it is a solid pattern. Further, the processing conditions of the embossing calendar are appropriately selected depending on the area of the convex portion of the pattern to be embossed.

After the embossing calender process, the fabric is subjected to a third step of hot water treatment at 40 to 100° C. in the present invention. This step is to make the texture softer and to reduce changes in the patterned pattern during use. This hot water treatment may be performed in the form of a spread cloth or in the form of a rope. When processing in spread form, use open soaper and relaxer.

When processing in rope form using a jigger or the like, a jet dyeing machine, a wince, or the like can be used.

Hot water treatment is carried out at 40-100'c. If the hot water is below 40℃, the liquid will not penetrate into the patterned fabric sufficiently.
The entire fabric cannot be treated uniformly, and the treatment takes time and costs are high. On the other hand, hot water is 100
When the temperature exceeds ℃.

Polyurekne resin applied in the first step may peel or separate from the fiber surface, and may even cause heat shrinkage, discoloration, or
This is not preferable because it may cause deterioration. The most suitable treatment method for the third step is to use a jet dyeing machine with a kneading effect or a wince, in the form of a rope, at a water temperature of 60 to 80 degrees Celsius.
This is a method of performing hot water treatment for a treatment time of 10 to 30 minutes.

In the hot water treatment in the third step, a surfactant, a reducing agent, an alkali, etc. may be used in combination as necessary, and the color fastness of the fabric can be improved by using these in combination. If an auxiliary agent is used, wash thoroughly with hot water after treatment to remove the auxiliary agent.

It is necessary to wash with water.

After the third step, dehydrate, dry, and apply fabric softener if necessary.
Apply fiber finishing agents such as antistatic agents and water repellents. The third step of hot water treatment improves the strong gloss and hard texture of the embossed portion of the raised fabric, and the luster of the embossing portion is reduced by some fluffing, and the texture becomes soft. The fabric of the present invention thus obtained is a patterned fabric with good durability.

In the third step above, the fuzz adheres to each other during the application of the polyurethane resin in the first step and drying, and there are cases where the effect of using ultrafine fibers of single filament I-1 denier or less is not achieved. During the kneading process with hot water, the adhesion between the two fluffs is loosened, and the appearance, touch, finger marks, and texture are similar to natural suede, and the luxurious patterning gives it a treated fabric.

(e) Examples Next, the method of the present invention will be explained by examples, but the present invention is not limited thereto in any way.

Example 1 First, two raised fabrics used in this example were manufactured by the following method.

Polyester false twisted processed yarn 75 denier/3 by Z false twisting
6 filament (single filament fineness approx. 2 denier) with S twist added 350 times/m is used as the warp, and as the weft.

Using polyester filament yarn 110 denier/392 filament (filament single yarn fineness approximately 0.28 denier) subjected to S twist 280 times/m, warp density 110/inch, weft density 164/inch, weave. Raised width 17
5 cm double-sided double weft 5-ply satin fabric (weighing 135 g/m
) was woven. This textile No. 2 is treated with regular glue and scouring treatment, then dyed dark gray with disperse dye.

Next, after drying, it was braced at 170° C. for 50 seconds using a pin tenter. The width of the fabric at this time was 157cm. After applying the raising agent here.

6 times on the front side of the fabric using a hydraulic needle cloth raising machine.

The back side was brushed twice, and the second front side had a lot of short fluff all over the surface, and the back side had a slightly lower fluff density.

After raising, in order to remove wrinkles and measure dimensional stability, heat setting was performed at 180° C. for 40 seconds in a Bintenku to obtain a raised fabric used in the present invention having a length of 113 cm and a weight of 210 g/%.

This napped fabric has a diameter of 30 cm and a surface made of silicone rubber.
The cloth was introduced into this roll padder at a speed of 10 m/min, and the treatment liquid of the following formulation 1 was applied at a squeezing rate of 64%.
Drying was performed for C93 minutes.

Formulation 1 (xUy, tsu, yori l+)v-@Mjjn) 1 part DC-70 49 parts water The solid content of the polyurethane resin after drying was about 10.3%.

The above is the first step in the present invention. After completing the first process, more than half of the fluff on one surface of the napped fabric was in a state of adhesion between fluffs, and it had a hard texture that could be peeled off when used for clothing. In this state, finger marks could not be made on the surface.

was placed in the center, and cotton rolls were placed on the top and bottom to perform embossing calendar processing.

After this second step, the surface of the napped fabric had a fish scale-like pattern clearly embossed on it, but it did not have a luxurious feel. The fluff in the recesses is embedded in the fabric and adhered to it by the resin applied in the first step, and when you zoom in and observe just the recessed part, you can see that it is firmly fixed in a plate shape and has a strong luster. had. For this reason, the texture as a whole was a little harder than the texture after the first step.

Subsequently, the third step of hot water treatment was performed in the following manner. As a processing machine, a Rustam type jet dyeing machine manufactured by Kitayo Seisakusho is used.
With the reduction cleaning recipe shown in Prescription 2 below, the bath ratio is 1:26. cloth speed 13
A rope-like hot water treatment was performed at 80° C. for 20 minutes at 0 m/min.

Prescription 2 Hydrosulfide 1g/7! Sodium hydroxide 0.5g/A' surfactant
0.5g/j! After the treatment, the material was thoroughly washed with water, dehydrated with a mangle in the form of a spread cloth, and then dried with a roller dryer. The resulting fabric was a durable, patterned napped fabric. The width is 112cm.

The weight is approximately 220 g/rd, and the strong luster of the molded parts before the hot water kneading treatment is reduced, resulting in a moderate luster, and the adhesion of the surface fluff remover, resulting in a suede-like fluff. The texture is soft and drapey, and the embossed pattern has a calm, natural fish scale pattern.
It had a luxurious appearance. It also resembled natural suede, with visible finger marks.

Furthermore, because it is treated with hot water, the scale-shaped pattern does not disappear even after washing five times at home and dry cleaning, making it fully usable for practical use. It had excellent color fastness and little dimensional change due to washing.

For comparison purposes, if the first step was omitted in the two examples and the molding was done in the same manner as in this example, the molding would be broken in the third step and the product value would be low. All I got was something.

(F) Effects of the Invention In the present invention, a fabric having ultrafine fiber fluff with a single yarn fineness of 1 denier or less is used as the fabric to be processed, and when molding it, a polyurethane resin is applied in advance, and the molding is carried out later. The structure is characterized by a combination of hot water treatment as a post-treatment, and the fabric obtained by this structure has very good washing durability of the embossed pattern. This fluffy nap fabric can be used not only for clothing but also for bags, but especially for bags combined with clothing, hats, gloves, etc.
In addition to shoe base fabrics, it can also be used for interior chair covers, etc.

Claims (1)

[Claims] (1) First step of applying a polyurethane resin emulsion of 1 to 50% in terms of resin solids to a fluffed fabric with a single yarn fineness of 1 denier or less, followed by drying, at a temperature of 160°C or higher and a nip pressure of 10 kg/cm. A method for shaping a raised fabric characterized by comprising the second step of embossing calendar processing and the third step of hot water treatment at 40 to 100°C.