CN115836147A

CN115836147A - Cold towel

Info

Publication number: CN115836147A
Application number: CN202180024760.4A
Authority: CN
Inventors: 橘田知孝
Original assignee: Qingdao Naxuteng Household Article Co ltd
Current assignee: Qingdao Naxuteng Household Article Co ltd
Priority date: 2020-04-08
Filing date: 2021-01-05
Publication date: 2023-03-21
Also published as: WO2021208528A1; JP3227026U

Abstract

A cool feeling towel is a cool feeling towel with knitting texture composed of a plurality of knitting yarns (11). The cool towel is provided with a convex part (22) at least on one side of the surface, wherein the convex part (22) has a part woven by three or more weaving wires (11) and has a parallel form of annular parts (23) arranged in a plane view. The cold feeling towel has a water absorption test result of less than 2 seconds according to the fiber product water absorption test method based on JIS L1907-2010, and a water retention rate of 180-210% according to the water retention test result based on QTECTM 11B. The towel can also restore the cool feeling effect by shaking after being used for a period of time.

Description

Cold towel

Technical Field

The invention relates to the technical field of spinning, in particular to a cold towel.

Background

At present, cold towels are continuously developed as one of means for preventing heatstroke.

Patent document 1 (japanese patent registration No. 3204842) proposes that "cool feeling towel is a long and thin cloth that is wrapped around the neck. When a person moves, a large amount of sweat is produced, and the sweat on the head flows down and often enters eyes, so that the vision of the person in motion is blocked. At the moment, the cold towel can wipe off sweat and realize the function of cooling in the process of wiping off sweat. However, the existing cool towel has rough surface, poor hand feeling and poor water absorption. In addition, when the cold feeling towel absorbs a large amount of sweat, the moisture in the towel cannot be quickly dissipated, and the cooling effect is difficult to play.

The cool feeling towel is a slender cloth which is enclosed on the neck. When a person moves, a large amount of sweat is generated, and the sweat on the head flows down and often enters eyes, so that the vision of the person in motion is blocked. At the moment, the cold towel can wipe off sweat and realize the function of cooling in the process of wiping off sweat. However, the existing cool towel has rough surface, poor hand feeling and poor water absorption. In addition, when the cold feeling towel absorbs a large amount of sweat, the moisture in the towel cannot be quickly dissipated, and the cooling effect is difficult to play. It has been proposed to improve the water absorption of cold-feeling towels.

Further, patent document 2 (japanese unexamined patent publication No. 2013-139654) proposes "a blended fiber having excellent cool feeling, which comprises a blended fiber having a core-sheath structure, a fiber mainly composed of polyethylene, and a core fiber composed of at least one fiber-forming polymer selected from a sheath fiber, a polyester, a polyamide, and a polyolefin. However, although the cooling effect (performance of giving a noticeable feeling to the user) is exhibited at the time of initial use, the reduction of the cooling effect is unavoidable with the lapse of time after the start of use, and the user feels a little warm.

Disclosure of Invention

The present invention has been made to overcome the above problems, and has an object to provide a cool feeling towel which can exhibit an effective cool feeling effect (a performance of feeling cool when worn by a person) and can recover the cool feeling by shaking for a long time even after the use of the cool feeling towel is started.

The inventors have made extensive studies to solve the above problems and found that the cooling effect can be recovered by shaking the towel to utilize the evaporation heat although the cooling effect cannot be inevitably reduced with the lapse of time after the start of use.

In the conventional cold feeling towel, attention has been paid mainly to improvement of water absorption property for rapid absorption of sufficient water, but when the water retention property is low, water having generated heat of evaporation evaporates early, and it is difficult to recover the cold feeling effect even if the towel is shaken.

Therefore, the present inventors have found that by balancing the water absorption property and the water retention property, the cold feeling effect can be recovered by effectively utilizing the heat of evaporation even after a considerable time has elapsed from the start of use. Further, the knitting yarn has high thermal conductivity and a feeling of contact coldness, and at the same time, effectively exhibits a capillary phenomenon that is remarkably generated by evaporative heat. The present invention has been completed by using the fabric.

A cool feeling towel having a knitted texture comprising a knitting yarn, wherein a shaped yarn made of a polyester fiber having an uneven fiber cross section is used as the knitting yarn. This makes the braided wire itself have a structure in which a capillary phenomenon is likely to occur.

The texture has a convex portion on at least one surface side, and the convex portion has a parallel form of annular portions arranged in a plan view and having a portion knitted by three or more knitting yarns. By the tight knitting of many of the braided wires, even a braided wire generally having low water retentivity can hold relatively much water as a whole. Therefore, the cold feeling towel is shaken to cause water circulation, thereby reducing the temperature of the yarns and the fabric itself which generate evaporation heat due to evaporation of water.

The cold feeling towel according to the present invention is characterized in that the water absorbency test result by the fiber product water absorbency test method (water dripping method) based on JIS L1907-2010 is less than 2 seconds, and the water retention rate is 180 to 210% based on the water retention test result by the QTEC TM11B method. According to the balance between water absorption and water retention, the effect of recovering cold feeling by the heat of evaporation can be effectively utilized even after a considerable time has elapsed after the start of use.

Preferably, the braided wire is a profiled polyester fiber having a plurality of fiber protrusions in a substantially radial shape in a fiber cross section. Therefore, the capillary phenomenon can be effectively promoted, the temperature reduction caused by evaporation heat can be realized, and the overlarge contact area of the texture structure and the human skin can be inhibited.

The braided wire has high thermal conductivity and a contact cold induction value (QMAX value) of 0.28W/cm < 2 > or more. By using a braided wire having high thermal conductivity, even if the temperature of the wire itself is the same, the cold feeling of contact that a person feels when touching can be exhibited.

Preferably, the braided wire contains nanoparticles of cold-sensitive crystals composed of minerals to improve thermal conductivity so that the contact cold-sensitive value (QMAX value) becomes 0.28W/cm2 or more.

Preferably, the cool feeling towel has a cool feeling restorability of restoring a cool feeling effect by shaking even after 60 minutes of use in a room having a room temperature of 25.7 ℃ and a humidity of 66% and a temperature change within 60 minutes of 1 ℃ or less, and can restore a cool feeling for a long time.

The application of the cool towel is to a fiber product.

Preferably, the fibrous product comprises a T-shirt, an undergarment, a face mask, a mouth mask, an arm protector and a glove.

Preferably, the T-shirt comprises a T-shirt body and sleeves, the cold towel is arranged on at least one side of the upper portion of the T-shirt body, and knitted fabrics are arranged on the lower sides of the sleeves and the T-shirt body.

The invention has the following positive effects:

1. the invention provides a cool feeling towel which can exert an effective cool feeling effect (performance of feeling cool after being used by a person) as a cool feeling towel and can restore the cool feeling effect by shaking even after 60 minutes from the start of use.

2. The invention provides application of a cool towel, which can be applied to fiber products, for example, the cool towel is arranged on at least one side of the upper part of a T-shirt body, so that the T-shirt has the effects of recovering the cool feeling and keeping the cool feeling for a long time.

Drawings

The invention is further illustrated by the following examples in conjunction with the drawings.

Fig. 1 is a side view of one side of the face of the cold towel of the present invention.

Fig. 2 is an enlarged plan view of the texture of the cold feeling towel according to the present invention.

Fig. 3 is a texture view of the cold towel texture of the present invention.

Fig. 4 is an enlarged cross-sectional view of the fibers of the knitting yarn of the cool towel according to the present invention.

Fig. 5 is an explanatory diagram of the results of the test of the dryness and temperature of the cold feeling towels of the example of the present invention and the comparative example.

Fig. 6 is an explanatory diagram of the result of the experiment of the cold feeling recovery property of the cold feeling towel according to the embodiment of the present invention.

FIG. 7 is a front view of the present invention T-shirt.

FIG. 8 is a view of the back of the T-shirt of the invention.

11. Weaving wires; 12. a fiber recess; 13. a fiber protrusion; 20. texture; 21. a recess; 22. a convex portion; 23. an annular portion; 24. a dense portion; 30. t-shirt; 31. a T-shirt body; 32. and (5) sleeves.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1 to 6, the cooling towel according to the present embodiment is a rectangular shape having a length and a width that can be wound around the neck portion, although not shown in the whole, and the size thereof is not particularly limited, but the cooling towel may be implemented as a rectangular shape having a length of 60 to 150cm and a width of 20 to 40 cm. Of course, the neck-shaped member may not be used around the neck, and in this case, one side may be formed into a square of about 30cm, like a towel.

The cool feeling towel is composed of a texture 20 knitted with a plurality of knitting yarns 11.

The texture 20 has, as shown in FIG. 1, at least on the surface side, convex portions 22, and the convex portions 22 have a configuration in which substantially polygonal ring-shaped portions 23 are arranged as indicated by the dots in FIG. 1 in a plan view. As shown in fig. 2, the convex portion 22 has a dense portion 24 densely knitted with three or more knitting yarns 11, and has a surface side in a convex state by using a flat knitting or a floating knitting on an inner side as a base layer. Fig. 3 shows an organization chart.

As shown in fig. 4, the braided wire 11 is a shaped wire made of polyester fiber having a fiber cross section of unevenness. The structure of the modified yarn is projected from the fiber concave portion 12 in a substantially radial shape by 4 fiber convex portions 13, and the capillary phenomenon is easily generated in the structure. The number of the fibrous protrusions 13 is preferably 4 or more, but if too large, it is most reasonable to provide 4 to 8 fibrous protrusions 13 because it results in a general polyester fiber having a circular cross section.

The braided wire 11 is particularly preferably a polyester fiber wire in which the braided wire contains nanoparticles of cold-sensitive crystals made of minerals, the thermal conductivity is improved by the nanoparticles of cold-sensitive crystals made of minerals, and the contact cold-sensitive value (QMAX value) indicating the amount of movement of instantaneous heat is 0.28W/cm2 or more.

Further, the core-sheath conjugate fiber may be used, for example, a core polyester, a conjugate resin of a sheath polyethylene resin and a polyvinyl alcohol resin.

The cool towel of this example was tested for water absorbency according to the fiber product test method (water dropping method) of JISL1907-2010, and the test result was 1 second. The dripping method of the present invention was carried out by dripping 1 drop of water on a test piece which was completely spread out, measuring the time (seconds) from the time when the water reached the fabric body to the time when the water completely absorbed the water, and carrying out the following method.

The test piece was mounted on a circular holding frame and was in a completely spread state.

1 drop of water (about 0.04 ml) was dropped from a height of 10mm on the test piece.

The time from when the water drop reached the test piece until the specular reflection (significant reflection) of the water completely disappeared was measured by a stopwatch.

More accurate tests were performed using the following instruments.

1) The test strip holding frame may be held in a state where the metal ring or the test strip is completely opened.

2) A burette with a stopcock.

3) A stopwatch of 0.5 seconds can be measured.

4) A light source with a brightness of 500lx to 1000lx, which can visually confirm the specular reflection of water.

5) Water at a temperature of 20 ℃. + -. 2 ℃.

From the sample, 5 test pieces having a size of about 200mm X200 mm were taken. Then, the test piece was mounted on the test piece holding frame, and placed between the light source and the observer. The distance from the surface of the test piece to the front end of the burette was set to a height of 10 mm. The observer observes from an angle at which the water reflects light clearly visible.

A drop of water was dropped from the burette. The time from when the water droplet reached the surface of the test piece until the wet state was measured in units of 1 second with a stopwatch as the test piece absorbed the water droplet and the specular reflection disappeared.

The test results were rounded off, and the average of 5 test pieces was taken as an integer.

According to the water retention test result of the QTEC TM11B method, the water retention rate is 180-210%. If the water retention is too low, the water required for cooling cannot be sufficiently retained. On the other hand, if the water retention rate is too high, such as 400% for a cotton towel, the temperature cannot be lowered if the towel is wetted and shaken effectively. The water retention rate is preferably 180% to 210% in consideration of the use as a cool feeling towel, and the towel can keep cool feeling for about 1 hour and can well swing when getting wet and swinging, thereby effectively reducing the temperature.

The water retention test developed according to the QTEC TM11B method in the patent of the invention refers to measuring the mass of a test material, soaking a towel in water at normal temperature for 30 minutes, taking out the towel from the water, vertically hanging the towel, immediately measuring the mass of the test material after standing for several minutes, and calculating the water retention rate according to the following formula.

Water retention (%) = water supply (ml)/original test material mass (g) × 100

Water supply (ml) = mass after immersion (g) -original test material mass (g)

As is clear from example 1 described later, the cool towel has a temperature change within 60 minutes of 1 ℃ in a room having a temperature of 25.7 ℃ and a humidity of 66%.

Further, the fabric exhibits an excellent cold feeling effect during use by maintaining a balance among thermal conductivity, water absorbability and water retentivity, and has cold feeling restorability capable of restoring a cold feeling by shaking even 60 minutes after the start of wearing.

The application of the cool towel is to a fiber product.

In particular implementations, the fabric products include T-shirts 30, undergarments, face masks, arm guards, and gloves.

In a specific implementation, the T-shirt 30 comprises a T-shirt body 31 and sleeves 32, the cool towel is arranged on at least one side of the upper portion of the T-shirt body 31, and knitted fabrics are arranged on the lower sides of the sleeves 32 and the T-shirt body 21.

The invention can be applied to fiber products, for example, the T-shirt 30 has the effects of recovering the cool feeling and keeping the cool feeling for a long time by arranging the cool feeling towel on at least one side of the upper part of the T-shirt body 31.

Example (b):

hereinafter, examples are described to enhance understanding of the present invention, but understanding of the present invention is not limited to these examples.

Example 1:

the cool feeling towel shown in fig. 1 was produced by knitting the texture shown in fig. 2 and 3 using the shaped yarn (75D 14F) 75 denier 144 filament made of polyester fiber having an uneven fiber section shown in fig. 4.

As comparative examples, tests on water absorption, water retention, ultraviolet shielding rate, and contact cold and warm feeling of 3 kinds of cold feeling towels (comparative examples 1 to 3) from the market were carried out at the four national test center of japan fiber product quality technology center, and the test results are shown in table 1.

TABLE 1

Drying and temperature testing:

the dryness and temperature of the towels were measured for example 1 and comparative example 2, and the results are shown in fig. 5.

In a room with a temperature of 25.7 ℃ and a humidity of 66%, the towel is soaked in water and folded to a length of about 25cm, the towel is twisted twice or more (the left and right hands catch the two ends and twist 180 degrees), then the towel is swung 6 times (the left and right upper ends of the towel are held by the left and right hands, the towel is unfolded towards the front of the body, the two hands quickly turn over the wrist and swing the arms after reaching the height of the face), the towel is folded into two folds along the width direction and then hung, and the temperature change and the moisture state change caused by touch are observed by thermal imaging from the test starting time (figure 5 (A)) to the time of passing 63 minutes (figure 5 (E)). As shown, the examples are placed on the right side and the comparative examples on the left side.

Test start time point (fig. 5A): the entire of example 1 and comparative example 2 was almost wet, and the surface temperature was about 21 ℃.

47 minutes elapsed after the start of the test (FIG. 5 (B)): example 1 was entirely wet with a surface temperature of about 21 ℃. A part of the upper part of comparative example 2 began to dry.

53 minutes passed after the start of the test (FIG. 5 (C)): example 1 was entirely wet with a surface temperature of about 21 ℃. Comparative example 2 the upper half was dried and the temperature of this part was raised to about 24 ℃.

60 minutes elapsed after the start of the test (fig. 5 (D)): example 1 was entirely wet with a surface temperature of about 21 ℃. Comparative example 2 was dried at the upper 2/3, and the temperature of this part was about 24 ℃.

63 minutes elapsed after the start of the test (FIG. 5 (E)): example 1 was entirely wet with a surface temperature of about 21 ℃. Comparative example 2 was dried as a whole, and the temperature of this portion was about 24 ℃.

Fig. 5 (E) shows a graph of the temperature change of example 1 and comparative example 2. In the figure, a represents the temperature change of example 1, and b represents the temperature change of comparative example 2.

Cold recovery test:

next, in example 1, the cold feeling restorability was tested.

This test is similar to the above test of the dryness and temperature, and the cold towel of example 1 was soaked with warm water in a room, then the towel twisting operation (2 times) and the swinging operation (6 times) were performed in the same manner as the test of the dryness and temperature, the towel was hung on the neck of the test person and both ends of the towel were crossed, the towel was heated by the body temperature of the test person, the swinging operation (6 times) was performed, and the state of temperature change was observed in the thermal imaging, and the result is shown in fig. 6.

Fig. 6 (a): the cold towel of example 1 was soaked and spread with warm water, and the whole towel was almost at a high temperature (pale white).

Fig. 6 (B): the state in which the towel was spread after the towel twisting operation (2 times) and the swinging operation (6 times) was performed was shown, and the whole towel was substantially low-temperature (thick color).

Fig. 6 (C): this shows an initial state in which the towel is hung across both ends of the neck of the tester, and the entire towel is almost at a low temperature (thick color).

Fig. 6 (D): this shows a state in which the towel is warmed by the body temperature of the tester, and the whole towel is almost at a high temperature (pale white) on the hands of the tester.

Fig. 6 (E): the towel is taken out of the neck of the tester and spread, and about 2/3 of the towel is at a high temperature (pale white) and about 1/3 of the towel is at a low temperature (dark color).

Fig. 6 (F) (G): this shows that the towel is again oscillated (6 times) and the amplitude of the oscillation is increased, and the whole towel is returned to a substantially low temperature (thick color).

As described above, the cool feeling towel according to the present invention restores the cool feeling effect by the swing even if it is warmed by body temperature after the start of use.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

A cool feeling towel characterized in that in a cool feeling towel having a knitted texture comprising a plurality of knitting yarns,

the braided wire is a special-shaped polyester fiber with a concave-convex section,

the texture has a convex part on at least one surface side,

the convex part has a part woven by three or more braided wires and has a parallel form of annular parts arranged in a plan view,

the cold feeling towel has water absorbency less than 2 seconds according to a water absorbency test of a water dropping method, and a water retention test result is a water retention rate of 180-210%.
The cool feeling towel according to claim 1, wherein: the braided yarn is a shaped polyester fiber having a plurality of fiber protrusions with a substantially radial shape in the fiber cross section, and is a polyester fiber yarn having a contact cold feeling value (QMAX value) of 0.28W/cm2 or more.
The cool feeling towel according to claim 1, wherein: the braided wire contains nanoparticles of cold-sensitive crystals composed of minerals.
The cool feeling towel according to claim 1, wherein: the cold feeling towel has a temperature change within 60 minutes limited to within 1 ℃ in a room with a room temperature of 25.7 ℃ and a humidity of 66%, and recovers the cold feeling effect by shaking energy after wearing.
The application of the cold towel is characterized in that: applying the cold feel towel of any one of claims 1-4 to a fibrous product.
The application of the cold towel according to claim 5, wherein: the fiber products include T-shirts, undergarments, face masks, armrests, and gloves.
The use of a cold towel according to claim 6, wherein: the T-shirt comprises a T-shirt body and sleeves, the cold towel is arranged on at least one side of the upper portion of the T-shirt body, and knitted fabrics are arranged on the lower sides of the sleeves and the T-shirt body.