JP2002302865A - Mixed knitted fabric - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide mixed knitted fabric that has a flexible and stretchable fabric hand of peach skin-touch and has uniformly thin raised surface with peach skin tone. SOLUTION: At least cellulosic fiber multifilament yarns and elastic naked fiber yarns are used to form a mixed knitted fabric. Then, the resultant mixed knitted fabric is rubbed on its surface with polishing film-attached metallic rollers to form thinly raised knitted fabric.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cross-knitted fabric having a peach skin formed of a uniform, thin, raised brush having a stretch property and having no spots. More specifically, a peach skin formed of a thin, soft, stretchable, non-uniform, uniform thinned nap by using cellulosic fiber multifilament yarn and elastic fiber bare yarn as the fibers constituting the knitted fabric. And a knitted fabric having

[0002]

2. Description of the Related Art Conventionally, as a method of forming a thin brush on the surface of a knitted fabric and changing the texture, there are known physical scraping such as needle cloth brushing and emery brushing, and chemical scratching using a chemical agent. Have been. When a more delicate appearance or texture of peach skin is required, a method of performing emery brushing or chemical scraping has been proposed. Emery brushing expresses a light brushing tone by polishing and cutting the surface of the fiber constituting the knitted fabric with sandpaper to form uniform fluff with short hair and high density.

[0003] For example, Japanese Patent Application Laid-Open No. H10-11037
No. 7 discloses a method of subjecting a woven or knitted fabric containing a synthetic fiber multifilament yarn to a rubbing process on the surface of the knitted fabric using a rotating roughened surface material having an abrasive film. According to this method, as the synthetic fiber, a woven or knitted fabric made of a multifilament yarn such as polyester or polyamide is used,
It is said that "the unique luster and slimy texture of synthetic fibers can be eliminated, and a natural luster and spun-like texture can be imparted." However, there is no description about obtaining a cross-knitted fabric having uniform peach skin with stretchability and no spots.

Japanese Patent Application Laid-Open No. 6-235161 discloses a method in which an expanded cloth is guided into a liquid, brought out of the liquid, and brought into contact with a raised member having a hard rough surface to raise the cloth. The fabric to be raised is a woven or knitted fabric, a nonwoven fabric, or the like made of a single fiber or a composite fiber of natural fibers, regenerated cellulose fibers, and synthetic fibers. According to this method, "there is no dust or fiber waste generated at the time of raising, and no wrinkles are generated." In this publication, knitted fabrics composed of synthetic fibers such as regenerated cellulose fibers and polyurethanes and composite fibers thereof are described as the object, but there is no specific description, there is a stretch property, there is no spot There is no description of obtaining a cross-knitted product having a uniform peach skin.

A method using a chemical agent is disclosed in
Japanese Patent Publication No. 209371 discloses that a cellulose fiber fabric is subjected to a relaxing treatment using a high-concentration aqueous solution of sodium hydroxide,
There is disclosed a method of generating fibrils on the surface of a cellulosic fiber and imparting a peach skin appearance and a soft texture to the surface of the knitted fabric by soft finishing. In this method, a relaxation treatment is performed using a jet dyeing machine or a winch dyeing machine. In a knitted fabric using a cellulosic fiber and a polyurethane elastic fiber, the cellulose fiber remarkably swells due to a high concentration aqueous solution of sodium hydroxide during the relaxation treatment, and fibrils are generated by friction in the liquid. However, due to the inclusion of the polyurethane-based elastic fibers, wrinkles were fixed in a rope shape, and wrinkle-like fibril unevenness occurred, and the appearance quality was low.

[0006]

SUMMARY OF THE INVENTION It is an object of the present invention to remedy the above-mentioned disadvantages, to be thin, flexible and stretchable.
An object of the present invention is to provide a peach skin-like cross-knitted fabric having a uniform, non-uniform brushed hair.

[0007]

That is, the present invention relates to a cross-knitted product formed by using at least a cellulose fiber multifilament yarn and an elastic fiber bare yarn, wherein the knitted product is formed by a metal roll provided with a polishing film. This is a cross-knitted fabric whose surface is lightly brushed by subjecting the surface of the knitted material to rubbing.

The most important feature of the present invention is that the knitted fabric is made thin, flexible and extremely uniform by using a cellulosic fiber multifilament yarn for the knitted fabric and thinly raising the surface of the knitted fabric with a metal roll equipped with an abrasive film. The point is that a cross-knitted product having a lightly brushed peach skin can be obtained. If you use spun yarn instead of multifilament yarn, or apply thin brushing with a means other than a metal roll equipped with a polishing film, fluff unevenness etc. will occur, brushing will be uneven, and peach skin will not be obtained. , The dough becomes thicker.
In addition, in the present invention, by using the elastic fiber bare yarn,
A thin, stretchy knit is obtained. If a composite yarn such as a covering yarn is used in place of the bare yarn, the thickness of the fabric becomes thick, and a nap occurs, and the object of the present invention is not achieved.

In the present invention, the thin brushed fibers are fine fibril-like and fluff-like fibers generated from the side surface of the cellulosic fiber multifilament yarn covering the surface of the cross-knitted fabric. The cellulosic fibers used in the present invention include cupra and viscose rayon (including polynosic).
And regenerated cellulose fiber multifilament yarns. The single yarn fineness of the cellulosic fiber multifilament yarn is preferably 0.5 to 5 dTex, and more preferably 0.9 to 3.5 dTex. Single yarn fineness is 0.5dT
If less than ex, uniform fluff is less likely to be generated, and 5dTe
If it exceeds x, the hand tends to be coarse and hard. Total fineness of cellulosic fiber multifilament yarn is 18-220d
Tex is preferred, and more preferably 33 to 167 dTe
x. If the total fineness is less than 18 dTex, the strength of the knitted fabric tends to decrease, and if it exceeds 220 dTex, the knitted fabric tends to be thick.

In the present invention, it is necessary to use the elastic fiber as bare yarn. The total fineness of the elastic fiber bare yarn is 11 to 56 dTe
x is preferred. If the total fineness is less than 11 dTex, the stretchability is low due to insufficient power, and if it exceeds 56 dTex, the texture tends to be rough.

Examples of the bare elastic fiber include a polyurethane-based bare fiber and a polyetherester-based bare fiber, and are preferably polyurethane-based elastic fibers.
The polyurethane-based elastic fiber has hydroxyl groups at both terminal groups and has a substantially linear urethane group having a molecular weight of 400 to 5,000. For example, polyol, polycarbonate, polylactone diol, polythioether diol, polyester amino diol, polyether diol, one or more of polycarbonate diol and organic diisocyanate, having a polyfunctional active hydrogen atom, for example, hydrazine, polyol,
Polyurethanes having a urethane group in the molecule by polymerizing a chain extender such as polyamine, hydroxylamine, etc., water or a terminal stopper having a polyfunctional active hydrogen obtained by reacting, for example, a dialkylamine in one or more steps. An elastic polymer can be obtained by spinning this polymer solution.

The cross-knitted fabric of the present invention is a cross-knitted fabric formed by using at least a cellulosic fiber multifilament yarn and an elastic fiber bare yarn, and is a weft-knitted fabric (circular knitted fabric) such as a sheet of jersey or smooth, and a two-way recot. And knitted fabrics such as Russell Tricot. Knitted fabrics composed of synthetic fibers such as regenerated cellulose fibers and polyurethanes and conventionally these composite fibers, for example, unlike composite fibers obtained by covering cellulose fibers with elastic fibers,
The knitted fabric of the present invention formed by using the elastic fiber bare yarn is thin, stretchable, and very easily wrinkled. The surface occupancy of the cellulosic fibers in the knitted fabric is preferably 50% or more. If it is less than 50%, it is difficult to obtain a peach skin-like appearance without spots. The proportion of the bare elastic fiber is preferably 5 to 20%. If it is less than 5%, the stretchability is insufficient, and if it exceeds 20%, the texture tends to be rough and rigid. It is important that the surface of the knitted fabric of the present invention is thinly raised by rubbing using a metal roll provided with an abrasive film.

[0013] Even if the cross-knitted fabric having the above structure is subjected to thin raising by means different from that of the present invention, nap spots occur frequently and the peach skin-like thin brush having a uniform fluff surface is obtained. No cross knitting is obtained. The abrasive film used in the present invention is one that gives an abrasive to the surface to give a rubbing effect to the knitted fabric, for example, a film of an abrasive such as alumina oxide, silicon carbide, polyester, polyethylene, polyvinyl chloride, etc. It is adhered to the surface. The particle size is preferably in the range of # 50 to 2,000. In particular, for a thin knitted fabric having stretchability, # 200 to 1,000 is preferred. If it is less than 50, the surface of the cross-knitted fabric is greatly damaged, and it is difficult to obtain a uniform thin nap. If it exceeds 2,000, the polishing tends to be insufficient.

In the rubbing process, a polishing film is mounted on a metal roll and applied to the surface of the knitted fabric. The knitted fabric is brought into contact with the polishing roll, preferably under spreading tension. If wrinkles or extreme distortion are present in the knitted fabric, rubbing unevenness occurs, and the knitted fabric is easily damaged or raised. The knitted fabric to be subjected to abrasion processing is performed in a dry state or a wet state. In order to obtain a more uniform appearance, it is preferable to apply moisture to the knitted fabric in advance and to perform abrasion processing in a state where the latent strain in the knitted fabric has been removed. In the case where the wet knitted fabric is subjected to the rubbing process, the mixed knitted fabric is preferably provided with 30 to 200% by mass, more preferably 50 to 110% by mass of water. Examples of a method for imparting moisture to the knitted fabric include a spray method and a dip-nip method in which water is impregnated with water and squeezed.

Although the tension of the knitted fabric during the rubbing process is not uniform depending on the state of the knitted fabric, it is generally preferable to apply a tension of about 5% or more. The knitted fabric to be subjected to the rubbing process may be any of a greige machine, a scoured product, a dyed product, and a finished product. However, in order to obtain a uniform appearance, it is preferable that the stretchability of the elastic fiber is made uniform by applying heat setting in advance. More preferably, the pre-wet treatment of dipping in water or warm water in a spread state is combined with a heat setting (pre-setting).
The processing speed of the rubbing processing is 5 to 40 m / min, and the processing rotation speed of the metal roll is 200 to 1000 rpm.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described more specifically with reference to examples, but the present invention is not limited to these examples. Evaluation method of appearance quality The uniformity of the dough surface is evaluated by the following evaluation method. On the north window side, the sample was placed on a flat plate, and based on the AATCC 3-D replica plate, the score was evaluated by 10 panelists. Find the average value. A score of 7 or more is considered acceptable.

[0017]

Example 1 Cupra multifilament yarn (Bemberg (registered trademark) manufactured by Asahi Kasei Corporation) 110 dtex / 75 filaments and polyurethane elastic fiber multifilament bare yarn (Roica (registered trademark) manufactured by Asahi Kasei Corporation) 33 dtex
Using a フ ィ ラ メ ン ト filament, a 28-gauge, 60-port circular knitting machine was used to produce a knitted fabric by on-machine knitting with a cellulose content of 90%. Soak this knitted fabric in 60 ° C hot water,
After squeezing, it was set at 185 ° C. for 2 minutes using a pin tenter. Next, the mixture was scoured using a jet dyeing machine according to a conventional method, and dyed in gray using a reactive dye. After dehydration, the metal knit is spread, and a metal roll equipped with a polishing film to which 800-mesh silicon carbide is adhered is rotated at 600 rpm in a direction opposite to the knitting object advancing direction, and brushing is performed at a speed of 20 m / min. gave. Then, it set at 160 degreeC for 2 minutes also serving as a drying process. The obtained knitted fabric had a stretchable property, had a peach skin touch that was brushed extremely uniformly, and had a good appearance quality. (8 appearance evaluations)

[0018]

Comparative Example 1 Cupra multifilament yarn (Bemberg (registered trademark) manufactured by Asahi Kasei Corporation) 110 dtex / 75 filament and polyurethane elastic fiber multifilament bare yarn (Leica (registered trademark) manufactured by Asahi Kasei Corporation) 33 dtex
A coverlink yarn was prepared using a ３ filament and a twist number of S400 T / M. Using this covering yarn, 28
A knitted fabric was prepared using a gauge and a circular knitting machine having 60 holes. The knitted fabric is immersed in warm water at 60 ° C., squeezed, set at 185 ° C. for 2 minutes using a pin tenter, scoured using a liquid jet dyeing machine in a conventional manner, and then grayed using a reactive dye. Stained. After dehydration, the knitted fabric was spread, and a metal roll equipped with an abrasive film to which 800-mesh silicon carbide was adhered was rotated at 600 rpm in a direction opposite to the direction of movement of the knitted fabric, and brushed at a speed of 20 m / min. Then, it set at 160 degreeC for 2 minutes also serving as a drying process. Although the obtained knitted fabric had stretchability, the fabric was thick and napping was scattered (appearance evaluation: 4 points).

[0019]

Comparative Example 2 The same knitted fabric as in Example 1 was immersed in warm water at 60 ° C., set at 185 ° C. for 2 minutes using a pin tenter, and alkali-treated with 40 g / liter caustic soda for 60 minutes using a jet dyeing machine. Was done. Thereafter, the mixture was neutralized, washed with water, dyed, and set at 160 ° C. for 2 minutes also serving as a drying treatment. Although the obtained product had stretchability and had a peach skin touch, the surface of the cross-knitted fabric had napping spots everywhere and had a low appearance quality (appearance evaluation 1 point) )

[0020]

The knitted fabric of the present invention is soft and has excellent stretchability, and has a peach skin touch appearance having a texture of peach skin touch and a very uniform brushed surface.

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Claims (3)

[Claims] 1. A cross-knitted product formed by using at least a cellulosic fiber multifilament yarn and a bare elastic fiber yarn, wherein the surface of the cross-knitted product is subjected to a rubbing process with a metal roll equipped with an abrasive film. Knitted fabric with lightly brushed. 2. The multifilament yarn of cellulose fiber has a single fineness of 0.5 to 5 dTex and a total fineness of 18 to 22.
0dTex, and the single yarn fineness of the bare elastic fiber is 1
The knitted fabric according to claim 1, which has a 1 to 56 dTex. 3. The cross-knitted fabric according to claim 1, wherein the surface of the cross-knitted fabric in a wet state is thinly raised by rubbing the surface with a metal roll provided with a polishing film.