JPS6017142A - Knitted 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 provides a fiber that is comfortable to wear, has good texture, and can give a sense of volume. , concerning the fl element.

Conventionally, textile fibers for clothing (2) have been widely used, including natural fibers such as cotton and wool, as well as synthetic fibers such as polyamide and polyester. It has excellent texture when worn, does not feel sticky or dry on the skin, and has no bulky material, and in the field of sportswear, etc. There was a strong demand for it.Of course, in order to respond to such a demand, the industry did a great deal of research.

For example, in Japanese Patent Publication No. 58-9174, filament yarns made of highly hygroscopic synthetic fibers and spun yarns made of ordinary synthetic fibers are mixed and knitted! lll hygroscopic,
It shows a means of obtaining a fabric with improved sweat absorption and skin resistance. Japanese Unexamined Patent Publication No. 51-47196 discloses that a vinyl monomer is selectively added to some of the fibers constituting the interwoven fabric consisting of two types of fiber groups. A method for producing a knitted fabric having a three-dimensional pattern by graph l-polymerization is shown.

However, all of these are not within a single system, but are interweavings of yarns with high hygroscopicity and shrinkage, and yarns with less , when attempting to impart high hygroscopicity by substituting alkali metals.

If that part is exposed on the surface of the knitted fabric and absorbs sweat,
It has a strong slimy and sticky feel and is never comfortable to wear.
"I can't say it's a piece. Also, the texture of this product when dry is
The more the quality of the item wears out, the more the fabric becomes rough and stiff, making it uncomfortable to wear. As mentioned above, the twisted yarn is not a blend or mixed fiber within a single system, so it is difficult to impart bulkiness and volume to the single system itself.

Based on this background, even if you sweat when wearing it, it will not get wet or sticky, and even when worn normally, it will not irritate your skin due to dryness. There is no
It has excellent moisture absorption and permeability, and bulkiness.

The present invention was developed after extensive research aimed at developing a material with excellent hygiene properties.

That is, the present invention has the following configuration in order to achieve the above object.

(1) The high shrinkage component has a carboxyl group of 5.2x10-
A knitted fabric made of synthetic fibers containing more than gram equivalent/gram fiber, and yarns in which the low shrinkage component is composed of ordinary natural and 7-inch synthetic fibers.

(2) The knitted fabric according to claim 1, wherein the yarn is a mixture of a high shrinkage component and a low shrinkage component.

(3) The knitted fabric as described in item 1 of the scope of Patent No. 8 Seigyu, wherein the yarn has a structure in which a surface layer of a high-shrinkage component is coated with a low-shrinkage component.

(4) The knitted fabric according to claim 1, wherein the carboxyl group of the high shrinkage component is substituted with an alkali metal or a quaternary ammonium salt.

(5) The knitted fabric according to claim 1, wherein the high shrinkage component is a polyamide synthetic fiber.

With this configuration, even if you sweat when wearing it,
It does not feel slimy or sticky, and even when worn normally (dry conditions), it does not cause any irritation to the skin due to dryness, and is moisture-absorbent.

This made it possible to provide a moon with excellent bulkiness. 9 more
When a product in which the carboxyl group is substituted with a specific quaternary ammonium salt having antibacterial properties is applied, it exhibits the effect of having both antibacterial and deodorizing properties, and is also capable of providing a highly hygienic period. has.

Here, the present invention will be explained in more detail. In the present invention, the number of carboxyl groups is 5.2x10
Synthetic wax K containing more than gram equivalent/crumb fiber
11- is applied, but the method for introducing this carboxyl group is a method in which a monomer having a carboxyl group, for example, a polymer made of acrylic acid or methacrylic acid, is friend-spun during fiber production, or after the fiber is produced in advance, Although there are methods such as graft polymerization of a monomer such as acrylic acid or methacrylic acid inside the fiber, the latter method of graft polymerization is preferable from the viewpoint of obtaining stable physical properties of the fiber 411.

At that time, it If'J' of the carboxyl group to be introduced,
, 52x 10-gram equivalent/gram fiber or more, and more preferably 9.6xlO gram equivalent/gram fiber or more to achieve the object of the present invention.

4 In other words, when the amount of carboxyl group introduced is less than 5.2 x 10 gram equivalent/gram fiber, fibers mixed with a low shrinkage component described below by air entanglement, or
By coating the second (surface layer) of the high-shrinkage component fiber layer with low-shrinkage component fibers, and then replacing the carboxyl group terminal with an alkali metal or steaming it,
Even if shrinkage treatment is performed, the shrinkage is small and the bulkiness, which is one of the objectives of the present invention, is not achieved, and the moisture absorption and permeability are also low, so that the level of wearing comfort is only the same as that of conventional products.

However, if the carboxyl group is less than 5.2 x 10 grams/gram fiber, preferably 9.6 x lO
When more than gram equivalent/gram fiber is introduced.

The low-yield I-component fiber is coated on the fiber layer (surface layer) of the fiber layer or the high-shrinkage component fiber mixed with the low-shrinkage component as described above by air entanglement, and then the carboquino group is treated with an alkali metal. When subjected to substitution, heat treatment, or high-temperature steam treatment, the high shrinkage component side referred to in the present invention shrinks significantly, and as a result, it is possible to express the bulk i'+; .

1. When obtaining such a bulky yarn, the high-shrinkage component side and the low-shrinkage component side are mixed together without air entanglement, or the low-shrinkage component side is placed in the surface layer of the high-shrinkage component side. When coating,
Even if the carboxyl groups in the high-shrinkage component side fibers are subjected to replacement heat treatment or steam heat treatment with alkali gold halide, the same effect as 1ν, which is the object of the present invention, can be obtained.
These treatments are difficult to obtain, so after composing the yarn,
I like running.

In addition, if the high shrinkage components mentioned in the present invention are present in large quantities on the surface layer of the yarn, when the fabric sweats while being wetted, it will absorb sweat, resulting in a strong slimy and sticky feeling. Even if the moisture permeability is good, these points cause discomfort and do not satisfy the purpose of the present invention. Therefore, in the present invention, rJ.

It is also an essential requirement that the high shrinkage component side be present in large amounts in the inner layer portion of the yarn and less in the surface layer portion. The shrinkage rate of the yarn according to the present invention is a factor of 10 or more in terms of boiling water shrinkage. Polyamide-based synthetic fibers are most suitable for the high-shrinkage components of the present invention, which have the functionality of high shrinkage and high moisture absorption and permeability.
In addition, at that time, the terminal carboxyl group is replaced with an alkali metal or an antibacterial quaternary ammonium.
It is preferable to carry out the application in water at a temperature below 2°C, preferably 80°C.

Alkali metals are substituted with sthorium hydroxide, potassium hydroxide, sodium carbonate, potassium carbonate, etc., while quaternary ammonium salts with antibacterial properties are substituted with, for example, lauryldimethylbennolammonium chloride syl ammonium. Chlorai l-', Steer IJ Lul
-1 Tsunotylammonium chloride etc. are used.

As a means to manifest bulk. In addition to the above-mentioned alkali metal substitution and quaternary ammonium substitution treatments, steam treatment is available, but it is preferable to use steam at a temperature of 80°C or higher, preferably 100"C or higher.

Next, the low-shrinkage component referred to in the present invention is not only natural cotton, wool, silk, and linen, but also ordinary polyamide, polyester,
Refers to synthetic fibers such as polyacrylonitrile, which shrinks in water by 4% or less when boiled.

Example 1, Comparative Examples 1 to 3 209×10 by kraft polymerization of acrylic acid
Gram equivalent/gram fiber carboxyl foundation 30 tenier. A 15-filament polyamide filament and a 30-tenier, 15-filament yarn made of ordinary polyester were mixed with air under conditions of n.

Such blended yarn.

After rinsing for 9 minutes, the mixture was heated to an elevated temperature in an aqueous solution of sodium carbonate ID g/i at a bath ratio of 1:100, and treated at 100'C for 60 minutes. This mixed fiber yarn had a shrinkage rate of 15% due to such treatment, and became a bulky yarn.

In addition, such bulky mixed fiber yarns are dyed with cationic dyes (cachylon).
When we performed boil dyeing with 1% owf (Blue 〇LH), we found that modified polyamide was present in large amounts in the inner layer of the single mixed fiber yarn, and polyester was present in large amounts in the outer layer.

Next, the bulky blended yarn was run on a circular knitting machine to create a milled fabric, sewn into underwear, and tested on actual wear. The results are shown in Table 1. It was found that the product of the present invention does not have a slimy or sticky feel, has good skin feel when dry, does not feel stuffy, and has a bulky window and is extremely comfortable to wear.

Next, for comparison, 100% polyamide fiber in this example
(Comparative Example 1), a product with 100 polyester fibers (Comparative Example 2), and a product without mixed fibers of polyester and polyamide (i:1), knitted into a milled structure with alternating single yarn feeding of i:1, and a product with 100 polyester fibers (Comparative Example 2) The same underwear as in this example (comparative example) was used.

Although actual tests were carried out, as shown in Table 1, none of them satisfied the purpose of the present invention. The following measurements and evaluation items were carried out.

[Moisture absorption rate]

The sample was placed in a weighing rack, dried at 110°C for 2 hours, weighed accurately, and then left in a desiccator containing a saturated aqueous solution of thorium nitrite for 24 hours. I won in the general ceremony.

〔Coefficient of friction〕

The friction coefficient was measured as follows. Figure 1 is a schematic diagram showing an example of a friction coefficient measuring device, in which two flat plates (2)
, (4) When the measured fabrics (1) and (1') are rubbed together, the cloth-cloth frictional force is measured, and the general formula F-μN is obtained.
Calculate the coefficient of friction (μ) by In the formula, F is the maximum frictional force between the fabrics, and 111 is the vertical force or load. Specifically, first, a 5 cm x 10 cm piece of fabric (1), a flat plate (2) (stainless steel plate), and a piece of site (6) are fixed to the soil (Figure 4).

On the other hand, the fabric (1') is fixed (3') L(
(Fig. 2.3), place the load case (4) on the above-mentioned flat plate (2) and pull one side (5) of the load case with a thin string (6). At this time, connect the thin string (6) to the ijU gauge (7).

Then, the flat plate (1) placed on the operating rail (8) is 50cm
Operate in the direction of the arrow at a speed of Jn/min.

The fabric (1') set at load setting (4) is rubbed against the fabric (1) fixed on a flat plate, the static and dynamic friction state at that time is sensed with a U gauge (7), and the frictional force (F) is recorded. Total (
9) to be recorded.

The wet friction coefficient is measured on a sample containing 100% water (100% pickup), while the dry friction coefficient is the value measured on a normally dry sample. It is a value proportional to the @ (skin tingling) feeling.

If the wet coefficient of friction is small, when it is tied, it feels uncomfortable to the touch, as if touching limescale. Furthermore, if the coefficient of friction when dry is too large, the fabric will feel dry and uncomfortable when worn.

[Bulk height]

Sample 6 based on JIs L 1018, 107'9
Measure the thickness of the stacked sheets. Thickness measurement is by front pressure type thickness 6
7 using a 2cm' pleather foot using a
Apply a load of g/cm' and read the thickness after 10 seconds. Separately, two sample pieces measuring 25 cxl x 25 cm were taken and weighed accurately. Multiply the obtained weight by 16 and convert it to I m' (the current weight g/m).

You can request the average price of the two tickets. Thickness determined above (mm)
From the weight (g/m'), calculate the bulk height using the following formula.

Bulk height (・m'/g) = -x 1[]"Here W
: Weight of the sample g/m') t : Thickness of the sample InrD) [Sample surface moisture content] Wearing the underwear of the present invention, we used an ergometer in a constant temperature and humidity room of 20°0 x 40% RH for 10 days. Perform a certain amount of exercise for 5 minutes, rest for 5 minutes, then exercise again for 1 minute and apply 100% to the sweat-absorbing surface of the underwear (the surface that was in contact with the skin).
A 508 plastic plate (10 cm x 10 cm) was placed on top of a Toyo P paper measuring m x 10 cm, and the weight increase rate (water absorption rate) was measured after 1 minute. If there is a large amount of moisture on the surface of the underwear (the area in contact with the skin layer) when sweat is absorbed, it will feel sticky when actually worn, giving an unpleasant feeling.

[Moisture permeability]

According to JIS Z 0208. However, the samples were measured with two sheets stacked one on top of the other.

[Comfort index]

Based on the feeling of comfort in wearing experiments, the following experimental formula was calculated from various measured values to determine the comfort index. Note that numerical values are inserted as absolute values (without units). The larger the index, the more comfortable the garment will be.

1 + () + (bulk height xO, 06) Friction coefficient when dry [Actual wear 2 Comfort] 20 men wore the actual wear test. Wearing comfort was judged based on stuffiness, dry/wet texture (dry: roughness, sweat absorption: wet, sticky), etc.

Grade 5: Good feeling of wear Grade 6: Normal wear Grade 1...Poor feeling of wear Rib example 2 Acrylic [ffi by kraft polymerization.

1.8 x 10-gram equivalent/A sliver consisting of a stable 25 tenile x 54 mm into which the carboxyl group of crumb fiber has been introduced is used as the core, and to this is a regular polynisdel & yarn + 111.5 tenile x 54 mm (7
) wrapped with a sliver consisting of staples, blending ratio 5
At 0:50, the spinner spun it into a 40 count core yarn. Next, this yarn was heated and subjected to alkali metal substitution treatment under the same conditions as in Example 1.

The shrinkage rate of this yarn was 142%. The yarn was sewn into milled knitted fabric and pear underwear in the same manner as in Example 1.
As a result of actually wearing it, there was no feeling of stuffiness.

It was a knitted fabric that did not feel sticky or rough, and was bulky and extremely comfortable to wear.

Example 6 A knitted fabric made of the mixed fiber yarn of Example 1 was immersed in an aqueous solution containing 5% OWF of lauryldimethylbenzylammonium chloride, heated and heated at a bath ratio of 1:100.
Substitution treatment was performed at 5°C for 60 minutes.

When this knitted fabric was sewn into underwear and a practical test was carried out, it had excellent stuffiness, stickiness, and roughness similar to Example 1, and was also found to have excellent odor resistance. Understood.

[Brief explanation of drawings]

1 is a schematic diagram showing an example of a device for measuring frictional characteristics of the present invention; 3 FIG. 2 is a plan view of the fabric attached to the cloth under load; The figure is a plan view of the fabric when it is under load, as seen from below.
FIG. 2 is a top plan view of a flat plate to which cloth is attached. In the figure 1.1': Fabric to be measured 2: Flat plate filter, filter l: Fixed part 4: Load platform 5: U gauge connecting pin 6: Thin ζ sumo 7: U gauge 8: Operating rail 9: Recorder patent application Hito Toshi Co., Ltd.

Claims (1)

[Scope of Claims] (1) A synthetic fiber in which the high shrinkage component contains carboxyl groups of 5.2xlO gram equivalent/gram fiber or more;
A knitted fabric consisting of yarns in which the low-shrinkage component is composed of ordinary natural and/or synthetic fibers. (2) The knitted fabric according to claim 1, wherein the yarn is a mixture of a high shrinkage component and a low shrinkage component. 3j. Claim 11 characterized in that the yarn has a structure in which a surface layer of a high shrinkage component is coated with a low shrinkage component.
1. The knitted fabric described in Section 1. (4) The knitted fabric according to claim 1, wherein the carboxyl group of the high shrinkage component is substituted with an alkali wire or a quaternary ammonium salt. (5) ")6 Shrinkage component is polyamide yarn synthesis 1k, t
, IF.