JPS6075664A - Treatment of ultra-fine raised knitted fabric excellent in durability - 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 (Technical Field) The present invention relates to a processing method for obtaining an ultra-fine napped fabric with excellent longevity and durability, such as pilling, bulging, shedding, and a feeling of tiredness due to napped hair.

(Prior Art) Napped woven and knitted fabrics using ultrafine fibers in the napped portion are already known. However, in many of these ultra-fine napped woven and knitted fabrics, the napped piles became loose and pilling occurred during wear, giving a tired feeling, that is, the front facing hairs became partially tangled and looked dull.

In order to prevent this phenomenon, various studies have been made up to now, and among them, a good effect has been obtained by fixing the roots of the raised piloes with a polymeric elastic material such as polyurethane. The collar and elbows are blurred,
Pilling occurs.

It was inadequate.

In order to sufficiently cover these drawbacks, the amount of the polymeric elastic material attached was further increased, but this product strongly expressed the rubbery feel of the polymeric elastic material, and was soft and soft.
The features of the soft-touch ultra-fine fibers will not be fully utilized.

On the other hand, attempts have been made to make the weaving structure denser, but these also have their limitations and are not sufficient as a means to completely suppress hair loss.

(Object of the present invention) The present invention is free from the above drawbacks, i.e. pilling.

To provide a processing method for obtaining an ultra-fine napped fabric knitted fabric which does not cause shedding or weariness and has excellent durability and has a napped density.

(In order to obtain the above object, the present inventor has made various studies over many years and finally arrived at the present invention. In other words, the present invention is as follows.

(1) 5 to 200 kg/cI1 on the raised side of a raised woven or knitted fabric mainly consisting of ultrafine fibers of 0.5 denier or less
A method for treating ultra-fine napped woven and knitted fabrics with excellent durability, characterized by subjecting them to 12 fluid treatments.

It is related to. This will be explained in more detail.

Ultrafine fibers of 0.5 denier or less are obtained by conventional spinning methods, that is, direct spinning methods, in which spinning conditions are strictly controlled and discharged through a fine-hole nozzle.

Super draw method that utilizes special polymer properties.

Flash spinning method using explosive jets from a nozzle.

Various methods such as jet spinning using high-speed gas blowing may be employed. Also, a method for obtaining ultrafine fibers from ultrafine fiber generation type fibers, specifically, a sea-island type composite fiber two-component molecular mutual arrangement fiber.

Known methods such as a method of removing one component from a multicomponent composite fiber such as a polymer blend fiber or a peelable composite spun fiber, or a method of peeling and dividing by physical or chemical action are used.

Materials for the ultrafine fibers include polymeric substances with fiber-forming ability, such as polyesters such as polyethylene terephthalate, copolymerized polyethylene terephthalate, polybutylene terephthalate, and copolymerized polybutylene terephthalate, nylon 6° and nylon 66. , nylon 12.
Examples include polyamides such as copolymerized nylon, polyolefins such as polyethylene and polypropylene, polyurethanes, polyacrylonitrile, and vinyl polymers.

The ultrafine fibers may be composite fibers made of different or the same types of polymeric substances, crimped fibers, irregular cross-section fibers, hollow fibers, etc., and even mixtures of different types of ultrafine fibers may be used.

It is necessary that the fineness of the ultrafine fibers forming the nap is not more than o5 denier. 0.5 denier thicker hair 0
The touch becomes poor and the flexibility becomes rough and stiff.

Next, regarding the method of producing a napped woven or knitted fabric using all of the ultrafine fibers, any known woven or knitted structure can be used as appropriate depending on the purpose. For example, in textiles such as satin weave and twill weave, ultrafine fibers are used for the 3 to 8 weft yarns, which have a high number of floats compared to the warp yarns.
In the case of a knitted fabric, a napped woven fabric can be obtained by applying ultrafine fibers to the front yarn such as tricot satin and subjecting it to brushing or puffing. Other double velvet, single pile double velvet, double pile velvet, double sided velvet, chinchilla weave, plush, wireless velvet.

A velvet fabric for imitation fur, a fabric using a filament with napped hair such as chenille yarn, and a napped fabric such as a tricot napped fabric are all preferably used. For the purpose of improving the feel of napped woven or knitted fabrics or for other purposes, fabrics impregnated with a polymeric elastic material such as urethane or coated from the back side are preferably used.

Next, 5 to 200
kg/ell+" fluid treatment.The fluid referred to here may be a liquid or a gas, and in special cases may contain extremely fine solids.Workability and cost aspects , Fluid is preferably used from the viewpoint of the amount of collision energy as a fluid, etc. Among them, water is most preferably used.

These fluids are pressurized to 5 to 200 kg/♂ and injected from a nozzle with a small hole diameter or a slit with narrow intervals to form a high-speed columnar flow or a curtain-like flow.

A spray contact treatment is applied to the napped surface of a napped woven or knitted fabric made of ultrafine fibers.

The fluid pressure can be freely selected from a range of 5 to 300 kg/m depending on the napped length of the napped woven or knitted fabric and the desired durability. Furthermore, when performing multiple treatments, the pressure may be changed for each treatment, and the nozzle may be vibrated.

The timing of performing the fluid treatment is not particularly limited and can be carried out as appropriate, but when ultra-fine fiber generation type fibers are used for raising, it is preferable to perform the fluid treatment after the ultra-fine treatment. More preferably, the dyeing of the napped woven or knitted fabric is carried out while it is still wet after dyeing.

It is also preferable from the viewpoint of effectiveness. That is, common finishing agents 2 after dyeing, such as antistatic agents, antifouling agents, and softeners.

Although it is preferable to apply a waterproofing agent, it is particularly preferable to perform fluid treatment with an aqueous solution containing these finishing agents from the viewpoint of simplifying the process.

Fluid treatment causes a slight change in the napped structure of the napped surface of the napped woven or knitted fabric. In other words, the single fibers of the napped hair become entangled, the napped fibers and the fibers that make up the ground texture become entangled, the napped length becomes shorter, and the hair becomes curly. This change in the piloerection structure causes pilling and peach.

This makes it possible to create a napped woven fabric with excellent durability and no hair loss.

Furthermore, the parts to be treated with fluid and the parts not to be treated can be patterned to create a patterned napped woven or knitted fabric.

(Effects of the present invention) The effects of the present invention are enumerated as follows.

[1) Piloeresis N1. Since the fibers and the edges of the weave are entangled, and the napped fibers are entangled with each other, a napped woven or knitted fabric with no misalignment or snarls in the woven or knitted fabric structure can be obtained.

(2) Since the nap is composed of ultra-fine fibers, the surface is soft to the touch.

(Those with a dense fiber density of 31 will have excellent heat retention.)

(4) A highly durable napped woven or knitted fabric without pilling, bulging, or shedding can be obtained.

(5) It is possible to obtain a napped woven or knitted fabric that is free of selvage fraying and pile napped fraying during cutting.

(6) A dense napped fabric with a short napped length can be obtained.

(7) A napped weave knit with a special luster on both the front and napped bristles can be obtained.

The napped woven and knitted fabrics obtained in the present invention are not only used for clothing, but are also preferably used for other industrial materials such as heat insulating materials, various adsorbents, and filtration surfaces.

Next, examples will be shown, but these are intended to make the present invention more clear, and the present invention is not limited by these examples.

Example 1 A 150 denier polyethylene terephthalate, 48 filament temporarily twisted yarn was used as the warp, and as a weft, the island component was polyethylene terephthalate, a sea component, or a polymer mainly composed of polystyrene, and the number of islands was 16.
Book, island component ratio 55 section.

A polymer array fiber having a crimp count of 12/1n, a fineness of 6.8 denier, and a fiber length of 51 mm was used as a spun yarn of No. 20 twin yarn to make a 5-ply satin fabric.

This was treated in boiling water to perform desizing and shrinkage treatment during weaving at the same time. Then, after drying, dilute with trichlorethylene for 5
The wefts were subjected to ultra-fine treatment by washing them separately and removing sea components.

Thereafter, a raising oil was applied and the fabric was passed through a French type and a German type raising machine 11 times each to produce a fabric with ultrafine fibers raised on two surfaces. The pressure on this fabric is 0kg/Cm! Water pressurized to 0.
It was sprayed from a nozzle with small holes of 5 mm diameter arranged in a row and brought into contact with the nap surface twice. The speed of the napped fabric at this time is 5
m/min.

After that, it was dyed dark blue using a disperse dye using a circular pressurized jet dyeing machine, applied with finishing agents such as a softener and an antistatic agent, and finished by drying.

This fabric had short naps with a thickness of 0.52 mm, had a dense nap structure, and had partially entangled naps, resulting in a velour-like nap fabric. This fabric was evaluated according to the pilling test method of J.E. S. 1076, and was found to be grade 5, and was found to be a highly durable napped fabric that did not cause puckering during wear.

Example 2 A 50 denier polyethylene terephthalate, 24 filament temporarily twisted yarn was used as the warp yarn, and a sea-island type composite fiber was used as the nine face weft yarns, in which the island component was polyethylene terephthalate and the sea component was a polymer mainly composed of polystyrene. , 245 with an island component ratio of 78 and 36 islands.
Using denier, 40 filament filament yarn,
The same thread as that used for the warp was used as the back weft, and the weaving density was 135 warp/in, R weft 81/in, '
It was made into a double weft 5-ply satin fabric with 81 JA wefts/1n.

This fabric was placed in boiling water and subjected to desizing and relaxing scouring during weaving, and then heat set at 130'OX 1 min. Thereafter, it was washed five times with trichlorethylene to remove the sea component of the sea-island type composite fiber used for the surface weft, and was subjected to ultra-fine treatment.

Next, after applying a napping oil agent, the fabric was passed through a hydraulic nap machine 15 times to obtain a nap fabric with ultrafine naps on the surface.

Next, the fabric was dyed brown with a disperse dye using a jet dyeing machine, and fluid treatment was carried out without drying. The fluid used was an aqueous solution containing softening and anti-static finishing agents and was pressurized to 50 kg/-m''.
It was sprayed from a nozzle with small holes of 3 mm diameter arranged in a row and brought into contact with the raised surface 6 times for fluid treatment, drying, and final setting.

This fabric had a thickness of 0,845 mm, a fabric weight of 150 g/m', and a nubuck-like napped fabric with extremely short and dense napped length. When a pilling test was conducted in accordance with J.E.S. 1076, it was found to be a grade 5 ultra-fine napped fabric with excellent durability. When this fabric was made into a sports shirt and worn, it was extremely warm, soft and had a characteristic two-surface luster.

Example 3 A spun yarn with wire number 18 made of seabird-type composite fiber staples shown below was used as a standing yarn of chenille yarn.

Island component: Polyethylene terephthalate Sea component: Polystyrene island Number of books = 6 Main island component ratio = 90% Sea component ratio: 10% Fineness of sea-island fiber: 2.8 Denier crimp number = 1'5 threads/in Cut length: As the core yarn constituting the core of the 51 mm chenille yarn, a spun yarn with a wire number of 80 double yarn consisting of 0.75 x 51 mm staples of polyethylene terephthalate was used.

Chenille yarn processing was performed using the above napped yarn, core yarn, and adhesive yarn to obtain a chenille yarn with a metric count of 2.6 and a napped yarn cut length of 3.0+nm.

A knitted fabric with a plain knit structure was made using an 8-gauge weft knitting machine using conochenille yarn. This knitted fabric is 150'.

Heat setting was performed using a pin tenter dryer, and at the same time, the adhesive yarn used for the core yarn was melted to bond and fix the napped yarn and the core yarn.

Thereafter, it was thoroughly washed with trichlorethylene five times to remove the sea component of the sea-island type composite fiber used for the napped yarn, and to perform ultrafine treatment. Next, it was dyed brown with a disperse dye using a jet dyeing machine, and a fluid treatment was performed while it remained wet without drying. This fluid treatment involves spraying an aqueous solution containing finishing agents such as antistatic agents and softeners at a pressure of 30 kg/m from a nozzle with a row of small holes of 0.6-diameter. Contact was made six times from the front side of the raised surface and twice from the back side.

Then, it was dried and finished.

This item had a soft suede-like double-ply knit with ultra-fine, dense raised pilings on both sides, making it hard to feel the presence of nine stitches.

Patent applicant Higashi Shikikai Co., Ltd.

Claims (1)

[Claims] (1) Treatment of ultra-fine napped woven and knitted fabrics with excellent durability, characterized by subjecting the napped side of the napped woven and knitted fabric, which mainly consists of ultrafine fibers with napped 0.5 denier or less, to a fluid treatment of 5 to 200 V■'. Method.