JP7262156B1 - toweling - Google Patents

Abstract

[Problem] A towel with high water absorption has a high water retention property, and a towel containing water remains heavy and wet for a long time. Since portable towels such as sports towels and outdoor towels are lightweight and are used repeatedly, it is desirable that the surface of the towels is always dry. In addition, towels with high water absorption do not drain well and take a long time to dry. In addition, the oil contained in the cotton thread interferes with the water absorbency. Towels made by untwisting cotton yarn with water-soluble vinylon or the like cause fluff to fall off. Therefore, it is an object of the present invention to produce a terry cloth that has high water absorption, quickly diffuses and evaporates water, and causes little fluff shedding. SOLUTION: A plied yarn manufactured by twisting a cotton yarn and a 10 to 30 denier polyester long fiber in opposite directions to each other is used for the pile yarn of a terry cloth having a pile surface that locks the pile yarn to the ground structure. , hydrophobic fibers with a single yarn fineness less than half that of the cotton yarn used for the pile yarn are used for the ground weave. After the terry cloth is manufactured, it is degreased. [Selection diagram] Fig. 1

Description

The present invention relates to toweling. More particularly, the present invention relates to a warp-knitted terry cloth having water absorption, moisture diffusion and quick drying properties.

There is an invention relating to a terry cloth that is stretchable and quick-drying after washing (Patent Document 1).

In addition, there is an invention relating to a terry cloth having good draining properties and quick-drying after washing (Patent Document 2).

Japanese Patent Application Laid-Open No. 2021-177026 Japanese Patent Application Laid-Open No. 2021-50462

The functionality demanded from towels by users, such as water absorbency, texture, durability, etc., varies widely, and the functionality required also differs depending on the scene of use. In addition, when water absorption is pursued, water retention also increases, and towels containing water remain heavy and damp, and it is not pleasant to use them while they are still damp. Moreover, towels with high water absorption have the disadvantage that they do not drain well and take a long time to dry when washed.

In particular, it is common to use the same towel continuously for a long time, such as a towel for sports, outdoor use, and travel. It is desirable to quickly return to a smooth texture. It is also desirable that the towels to be carried on the go should be light towels that dry quickly rather than wet and heavy towels.

The terry cloth described in Patent Document 1 is an invention of a terry cloth that is endowed with functionality such as stretchability, drainability, and quick-drying after washing. I can not say. In addition, crimped yarn is used to impart stretchability.

In the terry cloth described in Patent Document 2, the pile yarn is spun and twisted yarn of cotton yarn and polyester multifilament yarn, but since no contrivance is made regarding the yarn of the ground texture that locks the pile yarn, it is water absorbent and quick drying. is not sufficient, and the stretchability is lacking.

In addition, terry cloth is well known in which water-soluble yarn and cotton yarn are twisted in opposite directions and the cotton yarn is untwisted. Non-twisted cotton yarn tends to fluff off.

Therefore, the object of the present application is to provide a terry cloth with a fast drying speed, which has an improved water absorption speed, quickly transfers and diffuses the absorbed water to the ground structure, and facilitates evaporation of the water. In order to achieve this purpose, the fabric was designed by devising the pile yarn and also devising the ground structure for locking the pile yarn. Furthermore, the oil contained in cotton, which hinders water absorption, is removed by applying a degreasing process after the towel is manufactured, further increasing water absorption.

In order to solve the above problems, in claim 1 of the present application, untwisted yarn is used as the pile yarn, which is made by pulling together polyester long fibers of 10 to 30 denier and cotton yarn and twisting them in opposite directions, and the pile yarn is locked. The ground weave is knitted with hydrophobic fibers having a fine single yarn fineness less than half that of the cotton fibers used for the pile yarns.

In claim 2, cotton yarn untwisted with an untwisted width of 70% to 140% is used as the pile yarn to produce the terry cloth of the present application.

In claim 3, in order to increase the water absorption rate, degreasing is applied after the production of the terry cloth, and the terry cloth is produced by acting on cotton yarns containing oil. It is desirable that the degreasing rate is 50% or more.

The yarn used for the pile fabric is an untwisted yarn that is made by combining cotton yarn with excellent moisture absorption performance and polyester long fibers and twisting the cotton yarn in the opposite direction to the cotton yarn , so that the cotton yarn is untwisted. Voids are generated and have excellent hygroscopic performance. In addition, since the polyester long fibers are untwisted , swelling of the cotton yarn that absorbs water is suppressed, and the absorbed moisture is quickly transferred from the pile fabric to the ground structure without being retained in the cotton yarn.

In addition, since the cotton yarn, which is the core component, is untwisted, the polyester long fibers, which are the sheath component, have the effect of covering the cotton yarn, thereby preventing the cotton yarn from falling off and fluffing.

It drains well and has a short washing and drying time. Towels carried for outdoor use, sports, and travel use the same towel many times, but the terry cloth knitted using the warp knitting machine of the present application has a less wet feeling on the surface and is always used. You can enjoy the feeling of use with a smooth touch.

In addition, since the ground structure made of fibers containing polyester fibers or nylon fibers, which are hydrophobic fibers, continues to evaporate from the towel without retaining the moisture absorbed from the pile surface , the towel becomes wet and heavy. You can reduce the burden of the weight of your luggage when you go out.

Moisture absorbed from the pile yarn with improved water absorption speed contains polyester fiber or nylon fiber, which is a hydrophobic fiber with a single yarn fineness about half that of the cotton fiber used for the pile fabric. It is quickly absorbed into the fabric of the fabric by capillary action, and then quickly diffuses within the fabric and is released out of the towel. Therefore, even if the towel is used repeatedly, the feeling of wetness on the surface of the towel is small.

Since the present invention is a knitted fabric using a warp knitting machine, the terry cloth using the pile fabric has stretchability in the length direction of the terry cloth, fits the head after washing and is easy to wind. If a yarn obtained by covering an elastic yarn such as spandex with a fiber such as micropolyester is used for the ground structure, the warp-knitted fabric can be given more stretchability.

The combination of high fit, high water absorption and quick drying properties allows wet hair to dry quickly. In addition, it is easy to wrap around the body after taking a bath, and because it fits well, it does not slip off easily. For example, even if it is the size of a face towel, it has such elasticity that it can be used as a substitute for a bath towel. On the other hand, it is an eco-friendly terry cloth because it can reduce the amount of water used for washing.

A photograph showing a dropper dripping water onto a towel. A photograph showing the state of the towel surface after 1 second.

Optimal embodiments of the present invention are described in detail below.

The terry cloth, which is the pile knitted fabric of the present invention, has a pile surface formed by anchoring pile yarns on the front and back sides of the ground weave. The ground weave that holds the pile yarns is knitted using yarns that are less than half the thickness of the cotton fibers used for the pile yarns. Specifically, the yarn is knitted with fibers containing polyester fibers or nylon fibers having a hydrophobicity of 0.5 decitex or less in single yarn denier. Micropolyester and the like are preferred.

On the other hand, for the pile yarn , cotton yarn made of cotton fiber of 1.0 decitex to 3.0 decitex and polyester long fiber of 10 to 30 denier are combined, twisted in the opposite direction to the cotton yarn, and the cotton yarn is untwisted. do. At this time, experiments are conducted on the water absorption rate of the pile yarn to determine how much the untwisted state of the cotton yarn is suitable.

The experiment was performed by the Byrec method . A 20-count cotton yarn and a 20-denier polyester yarn are combined, twisted in the opposite direction to the cotton yarn, and the untwisted yarn obtained by untwisting the cotton yarn is used for the pile fabric. The untwisting rate is 70% to 80%. The untwisting rate referred to in the present application is 70% to 80% when the polyester yarn is untwisted 70 to 80 times in the opposite direction, that is, in the S direction, for 100 twists in the Z direction of the cotton yarn. is an indicator.

The ground weave uses threads that are less than half the thickness of the cotton fibers used for the pile fabric. The yarn used in the experiment is a hydrophobic fiber composed of 95% micropolyester and 5% polyurethane. The single yarn denier of the micropolyester is 0.5 decitex or less.

By knitting the ground structure using threads that are thinner than the pile fabric, it is possible to speed up the transfer of moisture from the surface to the ground structure by utilizing capillary action, thereby improving the water absorption rate and diffusion rate.

Examples of hydrophobic fibers forming the base structure include polyester fibers, nylon fibers, acrylic fibers, and the like.

By knitting the ground structure more densely than the pile fabric using fine threads, the moisture absorbed by the pile threads on the surface of the towel is quickly transferred to the ground structure using capillary action. Also, the use of hydrophobic fibers allows the absorbed moisture to diffuse quickly within the fabric.

Photographs showing the state at that time are shown in FIGS. As can be seen from these photographs, the cotton yarn used for the pile yarn of the towel of the present application is untwisted and gaps are generated between the yarns. On the other hand, the yarn that shines white in the photograph is the polyester yarn that is combined with the cotton yarn and twisted in the opposite direction to the cotton yarn. Since the untwisted cotton yarn is held in places by the polyester yarn, swelling due to water absorption of the cotton yarn is moderately suppressed and fluffing is prevented.

In Fig. 1, the water dropped from the dropper onto the pile surface is no longer on the surface after 1 second (Fig. 2).

As a result of the experiment, the obtained water absorbency index was 1378, which was very excellent. The ratio of oil and fat before and after degreasing was measured for the towels used at this time. The test method is a petroleum ether extraction method conforming to JIS. After the terry cloth is manufactured, the oil content in the state of gray fabric is 0.62%, and the oil content is reduced to 0.3% by degreasing. The degreasing rate is about 50%.

Considering that the water absorption index of general towels is 400 to 600, and the water absorption index of towels claiming high water absorption is about 800, the towel of the present application has a very high water absorption index. I understand.

Specifically, as a result of conducting a water absorption test on general towels made of 100% cotton, the water absorption evaluation index of company A was 376, that of company B was 534, and that of company C was 435. On the other hand, the number of towels sold by Company D, which claims to be super absorbent towels, was 938, and the number of towels by Company E, which also claims to be super absorbent towels, was 752.

All of them are 100% cotton towels, and unlike the towels of the present application, the types, fineness, untwisting, and degreasing of the yarns used for the pile fabric and ground texture are not devised.

The water absorption test was conducted by the Japan Towel Inspection Association.

The results of general commercially available face towels from Company A, Company B and Company C are as follows.

The measurement time for water absorption by Company D is 1 second, and the measurement time for Company E and the present application is 2 seconds.

The water absorption evaluation indices of general towels are 376, 534, and 435, and the water absorption evaluation indices of commercially available towels claiming high water absorption are 752, 938. 1378 was very high. In addition, it can be seen that the towel according to the present invention has the largest amount of water absorption after 60 seconds.

Subsequent experiments were also carried out for optimum untwisting adjustment. The untwisting rate is determined by the balance between the water absorbency and the texture of the pile surface located on the front and back of the terry cloth.

Comparative Experiment of Untwisting Rate An experiment was conducted on the water absorbency of a non-degreased cotton yarn twisted 800 times in the Z direction (no. 16). The immersion time according to the Byrek method is 10 minutes. The non-degreased cotton thread had zero water absorption.

Subsequently, undegreased 20 count cotton yarn (800 times Z twist) and 20 denier polyester yarn are combined and untwisted in the S direction, that is, in the direction opposite to the twist of the cotton yarn . We conducted an experiment on

The untwisting rate is preferably 70% to 140%. It seems that more voids are generated when the untwisting rate is closer to 100%, and the water absorption rate is faster. Obtained.

The mixing ratio of the polyester long fibers in the pile fabric in the present application is preferably 5% to 20%.

In addition, when cotton yarn is untwisted by using hollow or irregular cross-section yarn for the polyester filament used for pile fabric, the gap between the cotton yarn and the polyester filament increases, and the water absorption speed and water absorption are improved. do.

Since the towel according to the present application is a pile knitted fabric knitted using a warp knitting machine or the like, it has the advantage that even if the pile yarn is in a nearly non-twisted state, fluffing hardly occurs.

The terry cloth according to the present application is suitable as a portable towel for outdoor use and sports, but it is also used for household towels. Moreover, it can be applied to bedclothes such as towel blankets and pajamas using the towel cloth.

Claims (3)

In a towel cloth knitted with a warp knitting machine, in which pile yarn is anchored in the ground structure,
The pile yarn is an untwisted yarn obtained by combining cotton yarn and polyester filaments of 10 to 30 denier and twisting them in the opposite direction to the cotton yarn ,
The yarns that make up the ground structure have a single yarn fineness that is less than half that of the cotton fibers used for the pile yarns.
A terry cloth comprising fibers containing polyester fibers or nylon fibers . 2. The method of manufacturing a towel cloth according to claim 1, wherein cotton yarns in said pile yarns are untwisted in a range of 70% to 140%. 3. The method for producing a towel cloth according to claim 1, wherein the towel cloth is degreased by 50% or more .

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