JPS588156A - Production of velvet like synthetic fiber 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 The present invention relates to a method for producing a velvety synthetic fiber fabric having excellent pile uprightness, flexibility, and pile removal resistance.

Velvet fabric has a unique surface luster, an elegant touch, and a deep hue1, and has traditionally been used for high-end women's and children's clothing, coats, shawls, hats, and interior applications. However, in conjunction with the recent needs for pile fabrics, velvet fabrics are also being used for other purposes. Until now, rayon, acetate, cotton, and silk have been the main materials used for velvet fabrics.

Recently, attempts have been made to take advantage of the advantages of synthetic fibers (dimensional stability, easy care, high strength, etc.) to produce velvet made from 100% synthetic fibers and velvet mixed with 1 synthetic fiber. However, using synthetic fibers such as nylon and polyester for the pile part, the high rigidity of the synthetic fibers caused the pile to have extremely poor uprightness and poor texture, as shown in Figures 1 and 2. The pile is also coarse and hard, and is inferior in terms of texture and surface quality compared to conventional cotton, rayon velvet, etc., so it has not been mass-produced. The method of the present invention was discovered after intensive study on the method of manufacturing velvet-like fabric using synthetic fibers with excellent uprightness, flexibility, and pile resistance. A velvet-like woven fabric made of thermoplastic synthetic fibers, characterized in that the velvet-like woven fabric is made of filament yarns with a submerged shrinkage rate of 6 g 6 or more for the warp and weft yarns and has an area shrinkage of 15% or more. The present invention relates to a method for producing fiber fabrics.

The velvet-like fabric as used in the present invention refers to a woven fabric in which cut piles are woven in a V-shape or W-shape into the base material, and is velvet.

Examples include pla-ten, coal-ten, terempu, moquette, and pentin. The thermoplastic synthetic fiber referred to in the present invention is 1
Suitable examples include common polyamide fibers and various polyester fibers.

The number of piles constituting the velvet-like fabric of the present invention is usually 1 to 3.
Although it is made of non-shrinkable fibers of denier, there is no need to be limited to this.Also, the submergence shrinkage rate as used in the present invention refers to the shrinkage rate of the yarn when it is run in boiling water for 30 minutes. Ashi.

If the yarn length after submergence treatment is l, and the yarn length before water-making treatment is l, it is calculated using the quadratic formula. If L is the width and length of the fabric after shrinkage treatment, and W and L are the width and length of the fabric after shrinkage treatment, it is calculated using the 9th equation.

Traditionally, velvet-like fabrics are made by attaching the fabric to a frame in a wide spiral shape so that the pile surface does not come into contact with anything other than the treatment liquid.
It is then slowly rotated up and down once in a dyeing tank called a star set dyeing machine to prevent the pile from being disturbed.The desizing and scouring prior to dyeing are also carried out in the form of a spread cloth. Dyeing machine 1. The widening process is carried out in a completely non-touch state on the pile surface by using an open soaper and a dryer in conjunction with each other.◎In the unlikely event that the process is performed carelessly and the pile becomes disordered, It is impossible to correct this.

The velvet-like fabric used in the treatment of the present invention is ground yarn.

The pile yarn is also made from thermoplastic synthetic fibers, and is freshly ground.

By using a filament yarn with a submerged shrinkage rate of 6 #% or more as the weft yarn and causing the area shrinkage of such a fabric by 1596 cm or more, a synthetic fiber pile with extremely poor uprightness is created, and the pile density per unit area afcD is increased.

Furthermore, in order to obtain the fabric with good pile removal resistance,
It is essential that the ground yarn shrinks in both the warp and weft directions. If the ground yarn shrinks only in the lateral direction, the pile will not stand upright, and if the ground yarn shrinks only in the lateral direction, the pile density will be insufficient and lateral steps will occur. The submerged shrinkage rate of the ground yarn is 6% or more, preferably 8 to 15%, and the area shrinkage rate is 15% or more.

It is preferably 18 to 35%. Diving shrinkage rate of ground yarn is 6
If the area shrinkage is less than 15%, the uprightness and density of the pile will be insufficient, making it impossible to obtain a pile with good surface quality.

In addition, the submergence shrinkage rate of the ground yarn exceeds 15% and the 2 area shrinkage rate is 3
If it exceeds 596, the density of the fabric becomes dense), a thin texture is formed, a grain pattern is formed, and the date (fabric weight per unit area) tends to increase. 0 Such filament yarns having a submerged shrinkage rate of 696 or higher include pre-glued yarns, stuffed yarns made of these thermoplastic synthetic fibers, and filament yarns made of thermoplastic synthetic fibers that have been strained internally or mechanically to make crimp latent. The velvet-like woven fabric of the present invention is characterized by having shrinkability, and thus is different from the conventional one. The processing equipment for non-shrinkable velvet-like fabrics cannot be used as is.

That is, for example, if the velvet-like fabric of the present invention is fixed to a frame with a star-type dyeing machine during relaxation, the frame pins may become dislocated or cause uneven shrinkage in the form of a bellows. In the case of relaxation treatment, the fabric shrinks rapidly as soon as it enters the treatment tank, which is usually heated to 80 to 98°C. tends to occur.

Therefore, in the present invention, a method is adopted in which the velvet-like fabric is immersed in a treatment liquid at a temperature of less than 70°C, and then the temperature of the treatment liquid is raised to 80 to 130°C while the fabric is circulated and rotated without restraint. . The conditions for raising the temperature of the treatment liquid will vary depending on the type of thermoplastic synthetic fiber used, but it is particularly important to keep the patterned fabric from cooling during the shrinkage treatment, preferably at a constant temperature of the treatment liquid. The temperature difference from the temperature of the fabric to be treated is maintained at less than 5°C. After cooling once during the shrinkage process.

If the material is subjected to a process such as cyclic dipping again, wrinkles similar to those described above will occur.

As a means for uniformly shrinking the shrinkable velvet-like fabric of the present invention by 15% or more in area without shrinkage unevenness or processing wrinkles, liquid jet dyeing machines such as Circular, Uniace, Wince, and Overflow can be applied. --The use of a jet dyeing machine is particularly preferred. The fabric passes through an overflow nozzle together with the treatment liquid and is circulated, giving it excellent pile uprightness and flexibility, as well as pile resistance. Line, loco, etc. are five examples. - Ejector nozzle type liquid dyeing machines such as Circular and Uniace dyeing machines have problems such as excessive tension and rubbing action resulting in more hair loss on piles, while dyeing machines that use only the fabric to be treated circulates and rotates, such as Wince. However, due to insufficient kneading and spreading effects, processing wrinkles easily occur, and the flexibility tends to be insufficient. - When using an overflow type liquid jet dyeing machine, excessive tension is not applied to the fabric, making it difficult for the fabric to pass through the nozzle. Flexibility is imparted by the appropriate kneading action at the time of the process.Furthermore, when the fabric passes through the nozzle with the processing liquid, it is subjected to a spreading action, so the position of the folded part changes constantly and rope wrinkles do not occur.◎Overflow nozzle The passing speed is preferably about 20 to 60 m/min, including tension, kneading effect, and spreading effect. The shrinkage of the warp and weft ground threads improves the pile density of the unit area, and the ends of the piles stand upright as a result of transitioning to a state where mutual resistance between adjacent piles is minimized.

There is no particular restriction on the form in which the velvet-like fabric of the present invention is processed, but if pile disorder, uneven gloss, or wrinkles are a problem due to the model of overflow dyeing machine, type of fabric, two types of fabric, yarn usage, etc., the pile part Sew both ears together in a cylindrical shape with the edges on the inside. By performing 0-bag stitching, which is effective for so-called bag stitching, the processing liquid and air are forced inside the cylindrical fabric, circulated, and rotated; The position of creases and wrinkles changes.

When processing the velvet-like fabric of the present invention in an overflow dyeing machine, it is desirable to adjust the bath ratio to 1:60 or more. The bath ratio mentioned here refers to the fabric to be treated,
This is the weight ratio to the treatment liquid. Generally, fabrics are treated with a jet dyeing machine at a bath ratio of 1:15 to 50; however, in the treatment of the present invention, if the bath ratio is less than 1:60,
The woven fabric becomes too packed and the spreading effect is insufficient, which tends to cause processing wrinkles and pile disorder.

Preferably, the treatment liquid is adjusted to a bath ratio of 1:60 or more.
When raising the temperature, be careful not to cause temperature variations within the dyeing machine.
80 depending on the type of thermoplastic synthetic fiber constituting the fabric.
Process at ~130°C for 5-60 minutes. Although water is used as the treatment liquid, it may also contain chemicals such as dyes, acids, alkalis, and surfactants.

After processing at a predetermined temperature for a predetermined period of time, the dye is cooled down. As with the case of raising the temperature, care must be taken to ensure that there are no temperature variations within the dyeing machine.

It is not possible to process shrinkable velvet-like fabrics using a conventional dyeing machine with a star set or a laxer with an open soaper set, and even with non-shrinkable velvet-like fabrics, it is impossible to process different items in the gray fabric at the same time. .

According to the method of the present invention, fabrics having different shrinkage rates can be treated simultaneously in the gray fabric. Furthermore, the treatment method of the present invention can be used for scouring, relaxing, dyeing, finishing, etc. The velvet-like fabric obtained by the method of the present invention is
It has excellent pile uprightness and flexibility, and has a surface quality similar to that of natural materials.・It has good pile resistance and has a slight stretch, so when used for clothing, it provides a comfortable lid. It also has excellent sewing properties.

The present invention will be further explained below by giving examples.

Example 1 Polyester filament copolymerized with 8% by weight of sodium 5-sulfoisophthalate was brought into contact with a heating pin intermittently to give latent crimping with a submerged shrinkage rate of 8g6.
I DoD-36p, 400T/m ) was used as the warp and weft yarn, and 8% by weight of sodium 5-sulfoisophthalate was used.
Copolymerized polyester filament) (110D-3
6F) was used as a pile yarn to weave a dowel bed using a double velvet loom (grey density: 61 vertically x 96 horizontally/1 nch) o This woven fabric was subjected to relaxation treatment using various methods listed in Table 1. All bath ratios were the same. 1:100, cloth speed was 40 m/min, temperature raising, cooling, etc. were all carried out under the same conditions as shown below.

Although synthetic velvet with excellent flexibility can be obtained, all other methods have problems with pile uprightness, processing wrinkles, etc. 1. When the shrinkable velvet of the present invention is fixed to the frame of a dyeing machine with a star set and processed like conventional non-shrinkable velvet as in Level 4, the frame pins may become dislocated, the edges may be torn, or the bellows-like non-uniform shrinkage may occur. ◎ Example 2 The velvet greige obtained in Example 1 was relaxed and simultaneously dyed in the following treatment solution under the same conditions as Level 1 of Example 1. EatroINavy Blue N-2RL
3. O*owf (manufactured by Sumitomo Chemical Co., Ltd.) Acetic acid 0.5
g//Sodium acetate I], 2 g/
/ By relaxing simultaneous dyeing, the above fabric is 6 in the vertical direction.
4% +, and 22.0% shrinkage in the horizontal direction, and the 1 area shrinkage rate was 27%.0 Set the set width by expecting an additional 5% dry heat shrinkage in the horizontal direction, and The synthetic velvet with an area shrinkage rate of 33.9% was applied with an overfeed of 3g6 in the direction and set in a dry heat setting at 160°C for 30 seconds.
Rayon velvet has a surface quality and gloss that is comparable to that of rayon velvet, and it has 5% horizontal stretch and is found to have excellent stitchability. Non-shrinkable polyester filament (100D-36
Velvet was woven using a double velvet loom at the same gray density as in Example 1 using F) as the warp/weft yarn and pile yarn. This woven fabric was subjected to relaxing simultaneous dyeing under the same conditions as in Example 2.The 0 woven fabric was subjected to the relaxing simultaneous dyeing process, resulting in 5.2* in the vertical direction and 2.4* in the horizontal direction.
L does not shrink and the shrinkage rate per area is as low as only 55%, making the pile upright.

Defective, due to insufficient pile density 1 Synthetic velvet with good surface quality could not be obtained 0

[Brief explanation of the drawing]

FIG. 1 shows the synthetic velvet gray fabric of Example 1 cut in the horizontal direction. Figure 2 is an enlarged view of the pile single yarn of the gray fabric. Figures 3 and 4 are an enlarged view of the horizontal cut section and pile single yarn of the synthetic velvet treated by the method of the present invention. is an enlarged view of the pile single yarn obtained when the synthetic velvet was winced. 6th
The figure is an enlarged view of the pile single yarn when the above-mentioned composite velvet gray fabric was dry heat set at 160° C. for 60 seconds. Patent Applicant Toshi Co., Ltd. No. 40 Figure 5 Figure 6 Procedures Amendment - (Method) % Formula % Case Indication 1982 Patent Application No. 105491 2, Title of Invention: Velvet-like synthetic 5tI11 fabric Manufacturing method 4? 5. Number of inventions to be increased by amendment None 4. Change the "Brief explanation of the drawings" column of the positive target specification and the "(1) Page 15, line 3, r thing" in the description of drawing amendments to U status. ``Cross-sectional view''. (2) On page 15, line 4, before "enlarge", [pull out,
Insert that. (3) Delete ", 4" in the 4th line of page 15. (4) In the 6th line of page 15, amend "The horizontal cut surface of" to "This is the horizontal cut surface (after shrinkage treatment), and Figure 4 is a view of the pile single yarn pulled out." . (5) Correct "enlarged view of" in lines 8 and 10 of page 15 to [enlarged view of], respectively. (6) Correct figures 1 to 3 as shown in the attached sheet. Oh (・ Loo 2 Mouthfulness 3 Diagram)

Claims (3)

[Claims] (1) In a velvet-like fabric in which both the pile and ground yarn are made of thermoplastic synthetic fibers, the velvet-like fabric is made of filament yarns with a submerged shrinkage rate of 6% or more in the warp and weft yarns, and the area shrinkage is 15% or more. A method for producing a velvety synthetic fiber fabric characterized by (2) A patent claim in which the velvet-like fabric is immersed in a treatment liquid at a temperature of less than 70°C, and then the treatment liquid is heated to 80 to 130°C for shrinkage treatment while the fabric is circulated and rotated without restraint. A method for producing a velvety synthetic fiber fabric according to item 1. (3) A method for producing a velvety synthetic fiber fabric according to claim 1 or 2, in which an overflow jet dyeing machine is used as the area shrinking means.