JP3055833B2 - Compilation - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a double knit fabric. The present invention also relates to a comfortable double-knit fabric which is suitable as a material for sportswear, particularly training wear or competition shirts and pants, has good sweat absorption and absorbability, and is non-sticky by dry touch.

[0002]

2. Description of the Related Art Cloth that absorbs sweat well and has a dry surface in contact with the skin is a very preferable performance as a material for sportswear. Various attempts have been made to obtain this type of fabric. As an example, a method has been proposed in which water absorption is imparted to the entire double knit and then water repellency is partially imparted to the back surface. The disadvantages of this method are poor durability and high cost because the method of imparting water repellency is a printing method. As another example, by making the single fiber denier of the constituent fibers with the front and back of the double knit, the front relatively thin and the back thick, the sweat sucked on the back is the difference in the suction force of the capillary phenomenon. There is an idea to spread efficiently on the front side. However, in this case, in order to exert the capillary phenomenon, the yarn constituting the front side must be composed of a large number of yarns having considerable fineness, that is, ultrafine fibers called so-called high count yarns. There is a restriction that. However, when this high-count yarn is used as a fiber on the surface layer side of sportswear, wear, pilling and snagging are inevitable under severe use conditions, and the disadvantages are too large in this regard, and in reality, this Hard to use method.

[0003]

SUMMARY OF THE INVENTION The present invention is intended to avoid the above-mentioned drawback in the latter prior art, that is, the drawback in the case where a high-count yarn is used as a fiber on the surface layer side. In other words, even under severe use conditions, the problems of pilling, snuggling, and abrasion are avoided, and sweat is rapidly transferred from the back layer, that is, the side in contact with the skin, to the front layer, and the back layer is in a dry touch state. In order to satisfy the contradictory conditions, the problem is how to configure the knitted fabric.

[0004]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a double knit in which a surface layer and a back surface layer are joined by a joining layer, and each layer is made of a single fiber denier of 1.5%. To 5.0 denier synthetic fiber, and the surface layer is formed by knitting the fibers constituting the surface layer with 0.1 to 0.5 denier ultrafine fibers. And a knitted fabric characterized in that a layer immediately below the ultrafine fibers is formed. " As a more preferred embodiment, in the above-described knitted fabric, “the knitted fabric characterized in that the supplementary yarn is an ultrafine filament mixed with a polyester fiber and a polyamide fiber”
Furthermore, in the above-mentioned knitted fabric, the present invention proposes "a knitted fabric characterized in that the fibers constituting the front surface layer, the back surface layer, and the binding layer are polyester filaments".

In the present invention, the fibers constituting the surface layer of the double knit are ordinary yarns, that is, synthetic fibers having a single fiber denier of 1.5 to 5.0. This avoids the occurrence of pilling and snagging when using a high count yarn. In the present invention, it is important to knit a high-count yarn into the ordinary fiber by a splicing yarn knitting method. That is, the additional yarn of the high count yarn is used as a water absorbing layer. Because of the auxiliary yarn knitting method, the high count yarn is hidden by the face yarn made of the normal denier, and the defect of the high count yarn does not surface. Its disadvantages are the pilling, snagging, and wear,
It also has disadvantages in dyeing such as poor color development. Next, denier yarns are used for the fibers constituting the double-knit binding layer and the fibers constituting the back layer as in the case of the surface layer. As a result, the sweat absorbed in contact with the back layer is transferred to the auxiliary thread portion by a capillary phenomenon due to a denier difference between the fibers of the back layer and the binding layer and the auxiliary thread fibers of the surface layer. Has no wet feeling and can always maintain a dry feeling.

As described above, in the present invention, the fibers constituting the surface layer have a single fiber denier of 1.5 to 5.0.
0 is mainly used. This is to prevent the drawbacks of using a high count yarn for the surface layer as described above, and for that reason, a single fiber denier of 1.5 or more is preferable. On the other hand, if the single fiber denier exceeds 5.0, the bulkiness of the yarn, which is an aggregate of single fibers, is reduced, so that the high-count yarn concealing property immediately below by the fiber becomes poor, and the drawbacks of the high-count yarn are reduced. It is not preferable because it comes to the surface of the ground. The fiber constituting this surface layer may be a filament yarn or a spun yarn as long as the above-mentioned single fiber denier condition is satisfied, but the filament yarn is strong in pilling and snagging, and also has good air permeability. It is the best because it has good appearance as sportswear. As the material, synthetic fibers such as polyester fibers, polyamide fibers, and acrylic fibers are used. If necessary, natural fibers such as cotton, hemp and wool and regenerated fibers such as rayon may be mixed with these synthetic fibers.

As the high count yarn, it is necessary that the single fiber denier is a long fiber yarn of 0.1 to 0.5 denier. This is an ultra-fine denier necessary for exerting a difference in suction force due to a capillary phenomenon between the back layer and the fibers constituting the binding layer as described above. The fiber may be, for example, a long fiber made of polyester alone or a mixed long fiber made of polyester and polyamide. However, in the latter case, it is not necessary to make the denier finer than in the former case, even in the very fine denier region, and it is more preferable in terms of technology and cost. This is thought to be because in the latter case, there is a mixture of relatively hydrophilic and hydrophobic fibers, so that the adsorption and desorption of water occurs in a well-balanced manner, and the water is transported quickly. Is more preferable than the former case.

[0008] In order to further sufficiently absorb the sweat absorbed by the back layer from the back layer, the high count yarn is required to have approximately 1/3 of the total denier number of the fibers constituting the back layer.
Total denier number corresponding to the above, more preferably 1
It is desirable to use a yarn having a thickness that has a total denier number corresponding to / 2 or more.

As the method for producing the high-count yarn, a known production method known as a method for producing a so-called ultrafine fiber is used. For example, a direct spinning method, a method of spinning sea-island fibers, and subsequently extracting and removing sea components, and a method of further spinning a composite component and dividing the composite component into respective composite components by splitting means later. Obtainable. In particular, in the case of composite spinning, polyamide and polyester are spun as a single yarn having a side-by-side multilayer shape, and then split by heat and mechanical action in false twisting, or after knitted, alkali By reducing the weight, the yarn can be divided into high count yarns.

The fibers used for the binding layer and the back layer of the double knit may be filament yarns or spun yarns similarly to the fibers used for the surface layer, and the single fiber denier is preferably the same fineness as the surface layer fibers. If the monofilament denier of the binding layer and the back layer is low, there is no difference in the fineness between the splicing yarn and the effective transfer of sweat cannot be performed, and there is a certain thickness formed between the binding layer and the back layer. That is why the back layer is dry touch, and for that purpose, single fiber denier is 1.5
It is necessary to be above. However, in the fibers constituting these layers, if the monofilament denier becomes too large, the first sweat absorption cannot be performed effectively,
5.0 denier or less is preferable. As the fiber material used here, the same synthetic fiber as the fiber material used in the surface layer is used. In addition, since the fibers used are basically hydrophobic materials, in order to absorb the generated sweat more quickly and to further eliminate the feeling of wetting in the back layer after sweating, at least the back side should be used. It is effective to apply a hydrophilic treatment to the fiber surface. As the hydrophilic treatment agent, a known processing agent used for ordinary clothing fibers can be used.

[0011]

The present invention will be further described below with reference to examples. Example 1, Comparative Examples 1 and 2: The following fibers were used as the fibers constituting the front surface layer and the back surface layer, and a double knit shown in the organization diagram of FIG. 1 was produced. That is, the examples and the comparative examples correspond to yarn feed numbers 1, 3, 5, 7 and 2, 4, in the organization chart.
The portions 6 and 8 are the same in that ordinary polyester semi-dal (containing 0.2% titanium dioxide) false twisted yarn 150d-48f is used, but the yarn feed numbers 2, 4, 6, and 8 are used.
In Example 1 of the present invention, a yarn knitted with high count yarn 75d-264f (single yarn fineness 0.28 denier) made of polyester and nylon, Comparative Example 1,
2 is a normal polyester semi-dull false twisted yarn 75d-
24f and those knitted with 75d-72f were prepared. That is, in the example and the comparative example, the yarn supply total fineness in the yarn supply numbers 2, 4, 6, and 8 was the same,
The embodiment has a configuration in which a high-count yarn is included as an auxiliary yarn, and the comparative example has a configuration in which a high-count auxiliary yarn is not included.

The knitted fabrics obtained in Example 1 and Comparative Examples 1 and 2 were dyed and finished according to a conventional method, and the performance of each was evaluated by the following model test.
The test and its evaluation method are as follows. (1) Regarding diffusion of water (sweat): Water 0.5 on the back of the knitted fabric
Then, the diameter of a circle wetted with water after 1 minute is measured, and the area is determined. However, this circle looks at the wetting of the surface layer including the layer immediately below the surface, that is, the wetting caused by diffusion, not the wetting of the back surface. (2) About the drying rate of water (sweat): about 0.5 ml of water is dropped on the glass surface, and the knitted fabric is covered thereon so that the back surface of the knitted fabric is in contact with the water droplets (starting at that time), and the time is measured. With the lapse of time, the weight loss of the total weight of the glass, water, and the knitted fabric is recorded, and the drying rate of water (the time required for 50% drying) is determined. The measurement was performed in a room at 23 ° C. and 60% RH. (3) Wetness: This was determined by touching the back surface of the knitted fabric with a finger one minute after the drop of water in the experiment of (1). Table 1 below shows the results of these model tests, and FIG.
Shown in

[0013]

[Table 1]

From Table 1 and FIG. 2, it is shown that the knitted fabric of the present invention in which the layer immediately below the ultrafine fibers is formed is excellent in all respects, and is excellent in comfort as a material for sportswear. .

[Brief description of the drawings]

FIG. 1 shows an organization chart of a double knit of the present invention.

FIG. 2 is a graph showing a drying rate of water in each knitted fabric in a model test (2).

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-52-25168 (JP, A) JP-A-57-171703 (JP, A) Real opening Sho-59-169386 (JP, U) (58) Field (Int.Cl. ⁷ , DB name) D04B 1/00-1/28

Claims (3)

(57) [Claims] 1. A double knit in which a surface layer and a back layer are joined by a joining layer, wherein each layer is mainly composed of 1.5 to 5.0 denier single fiber synthetic fibers, The surface layer is characterized in that a layer immediately below the ultrafine fibers is formed by knitting the fibers constituting the surface layer with ultrafine fibers having a denier of 0.1 to 0.5 denier. Knitted fabric. 2. The knitted fabric according to claim 1, wherein the additional yarn is an ultrafine long fiber in which a polyester fiber and a polyamide fiber are mixed. 3. The knitted fabric according to claim 2, wherein the fibers constituting the surface layer, the back surface layer and the binding layer are polyester filaments.