Summar bedding

Abstract

To provide summer bedding knitted by a warp knitting machine, having water absorption, moisture diffusivity and quick-drying properties, quickly absorbing and diffusing moisture such as sweat, and exhibiting a cooling effect by heat of vaporization when the moisture evaporates from the fabric.SOLUTION: A bedding is manufactured by alternately arranging a pile gap part composed solely of a ground fabric knitted in a mesh shape and a pile part formed in parallel in a ridge shape, the pile gap part knitted by using yarns containing cotton yarns as the pile yarns and using fibers containing polyester-based or nylon-based fibers with a single yarn fineness of a half or less than that of cotton fibers used for pile yarns as yarns constituting the ground fabric in a fabric with the pile yarns anchored in the ground fabric. Water absorption and diffusion speed are thus accelerated by utilizing a capillary phenomenon caused by the difference in fiber thickness between the pile yarn and the ground fabric, and a height difference between the pile yarn and the ground fabric reduces a contact area with the skin, while enhancing breathability. Furthermore, the bedding undergoes degreasing treatment to remove oil content from the cotton yarn, thus enhancing the water absorption.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to summer bedding, and more particularly to bedding knitted on a warp knitting machine that is suitable for summer and has water absorption, moisture diffusion, and quick-drying properties. [Background technology]

[0002] There is a patent for a terry cloth made of a ground weave and pile yarns that uses a new type of yarn and has excellent water absorption and moisture diffusion properties (Patent Document 1).

[0003] There is also a woven fabric for bedding that uses tightly twisted yarn and has a cool feel to the touch (Patent Document 2).

[0004] There is also bedding that has mesh fabric sandwiched between the front and back fabrics and quilted together, creating a space between them to allow the heated air inside to be exchanged with the air outside (Patent Document 3). [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Patent Publication No. 7262156 [Patent Document 2] Japanese Patent Application Laid-Open No. 2016-183426 [Patent Document 3] Japanese Patent Application Laid-Open No. 2015-204874 Summary of the Invention [Problem to be solved by the invention]

[0006] The towel fabric described in Patent Document 1 is an invention of towel fabric that has been endowed with the functionality of water absorption, moisture diffusion, and quick drying, and achieves the above effects by newly developing yarns used for the ground weave and pile yarn, but no innovations have been made regarding the knitting that would allow it to be used as a summer mattress pad.

[0007] The woven fabric described in Patent Document 2 is made of thick, tightly twisted cotton yarn to give it a cool-to-the-touch effect, but does not exhibit effects such as water absorption or moisture diffusion.

[0008] The bedding described in Patent Document 3 is a mattress pad used in the summer that ensures breathability by creating space inside using quilted fabric with mesh fabric sandwiched between it, but since no special measures have been taken regarding the surface of the fabric that comes into contact with the body, it does not have the effect of quickly absorbing sweat and the like.

[0009] Therefore, in this application, the purpose is to provide summer bedding that focuses on the difference in fineness between the pile yarn and the yarn used in the ground structure that holds it in place, imparts moisture absorption speed and moisture diffusion properties, and further devise a knitted fabric shape to ensure breathability, and quickly transfers and diffuses absorbed moisture into the ground structure, allowing it to evaporate and have a cooling effect. [Means for solving the problem]

[0010] In order to solve the above problem, claim 1 provides a fabric knitted by a warp knitting machine in which pile yarns are fixed to a ground weave, using yarns containing cotton yarns for the pile yarns, and using fibers containing polyester-based fibers or nylon-based fibers with a single yarn fineness that is half or less than that of the cotton fibers used for the pile yarns for the yarns constituting the ground weave, and manufacturing bedding by alternately arranging pile gaps only in the ground weave knitted in a mesh pattern and pile portions formed in parallel ridges.

[0011] In claim 2, the bedding described in claim 1 is subjected to a degreasing process of 50% or more. [Effects of the Invention]

[0012] Moisture such as sweat absorbed by the pile yarn is quickly absorbed by capillary action into the ground fabric, which is made of hydrophobic fibers with a single yarn fineness about half that of the cotton yarn used in the pile fabric, and then quickly diffuses within the ground fabric and is released outside the bedding.

[0013] The loose mesh structure of the fabric provides excellent breathability. The pile yarns create horizontal ridges that are uniformly distributed across the bedding, creating an uneven surface that reduces the contact area with the body and creates space between the body and the bedding, resulting in a light, smooth, and comfortable feel.

[0014] Furthermore, the alternating arrangement of parallel ridged pile sections and mesh-like ground fabric minimizes contact between the body and the bedding, and the height difference between the pile section and ground fabric creates space between the bedding and the body, providing excellent breathability.The pile section also acts as a cushion, providing just the right amount of firmness.

[0015] When sweat evaporates, it takes heat energy from the body that is in contact with the bedding as heat of vaporization, so not only does it prevent heat from building up inside the bedding, it also has a cooling effect, allowing you to get a cool and comfortable sleep.

[0016] It has good drainage properties, so washing and drying times are short and the amount of water used for washing is reduced, making it an environmentally friendly bedding product.

[0017] The surface feels less wet, and the moisture absorbed from the pile surface continues to evaporate without being retained by the base fabric made of hydrophobic fibers, so you can always enjoy a smooth feel against your skin.

[0018] Degreasing removes the oil from the cotton yarn, increasing the absorbency of the pile part that comes into contact with the body. [Brief explanation of the drawings]

[0019] [Figure 1] FIG. 1 is a front view of bedding according to the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0020] The best mode for carrying out the present invention will now be described in detail with reference to FIG.

[0021] The summer bedding 1, which is a pile knit fabric of the present invention, has one or more parallel ridges made of pile yarn formed on the surface of a mesh-like ground structure. The ground structure that holds the pile ridges in place uses a cotton yarn that is less than half the thickness of the cotton yarn used for the pile yarn and is loosely knitted in a mesh-like pattern. The bedding is manufactured by alternately arranging pile gaps 2 made only of a mesh-like ground structure and multiple pile sections 3 arranged in parallel ridges.

[0022] There are no particular restrictions on the thickness and number of ridges that form the pile section, or the spacing between the pile section and the pile gaps, which consist only of the ground weave, but it is important to maintain an appropriate height difference between the pile gaps and the pile section to create a space that allows air to pass through.The appropriate height difference between the pile gaps and the pile section is about 2mm to 30mm.

[0023] The ground weave uses thread that is less than half the thickness of the cotton thread used for the pile. The thread used in the experiment is a hydrophobic fiber made of 95% micro polyester and 5% polyurethane. The polyester single yarn denier is 0.5 decitex or less.

[0024] By knitting the ground fabric using yarns that are thinner than the pile fabric, capillary action can be utilized to speed up the transfer of moisture from the surface to the ground fabric, improving the rate of water absorption and diffusion.

[0025] Examples of hydrophobic fibers that may be used to form the ground fabric include polyester fibers, nylon fibers, and acrylic fibers. By knitting the ground fabric using thinner yarns than the pile fabric, the moisture absorbed by the pile yarns on the surface of the bedding is quickly transferred to the ground fabric by capillary action. Also, by using hydrophobic fibers, the absorbed moisture is quickly diffused within the ground fabric.

[0026] In addition, the pile yarns can be made not only from cotton yarns, but also from untwisted yarns made by combining cotton yarns with 10 to 30 denier polyester long fiber yarns and twisting them in the opposite direction to the cotton yarns. The yarns that make up the ground weave are made from fibers containing polyester fiber or nylon fiber with a single yarn fineness that is less than half that of the cotton fiber used in the pile yarns. Furthermore, bedding is manufactured by alternately arranging pile gaps consisting only of a mesh-like ground weave and pile sections formed in parallel ridges.

[0027] Specifically, the knitting is performed using a hydrophobic fiber with a single yarn denier of 0.5 dtex or less, and micro polyester is preferred.

[0028] On the other hand, the pile yarn is made by twisting 1.0 to 3.0 decitex cotton fibers with 10 to 30 denier polyester filaments in opposite directions. Experiments are being conducted on the water absorption rate of the pile yarn to determine the optimum degree of untwisting.

[0029] The experiment was conducted using the modified Larose method. 20-count cotton yarn was twisted in the opposite direction with 20-denier polyester yarn, and the resulting twisted yarn was used for the pile fabric. The untwist rate was 70% to 80%. The untwist rate here refers to the ratio of 100 twists of cotton yarn in the Z direction to 70 to 80 twists of polyester yarn in the opposite direction, i.e., S direction. The results showed that an untwist rate of 70% to 140% is optimal.

[0030] Next, an experiment was conducted to measure the contact temperature of a commercially available mattress pad that claims to have a cool contact feel and a mattress pad made of the fabric of the present application.

[0031] No. 1 is a "cooling pad" that is made of quilted padding with padding sandwiched between layers to provide cushioning, and the surface that comes into contact with the body is made of a cooling fabric. Materials used for the fabric include polyethylene, nylon, and polyester. The surface of the fabric is smooth.

[0032] 2 is another commercially available summer mattress pad. The surface is made of a cool-to-the-touch fabric.

[0033] The fabric No. 3 has a mesh-like ground structure and pile yarns of the same fineness, with multiple ridges formed in parallel, with pile gaps and pile sections consisting only of the ground structure alternately. Specifically, three thin ridges about 5 mm wide are formed in the horizontal direction of the bedding, and the pile gaps are 3 cm long in the vertical direction.

[0034] 4 is the fabric of Example 1 of the present invention, and is a ground structure consisting of only a mesh ground structure at intervals of 1.5 cm. This mattress pad is made of a woven fabric and three parallel pile sections with thick ridges of about 5 mm. The difference in height between the pile gaps, which are made up of only the ground fabric, and the pile ridges creates a space between the bedding and the body.

[0035] The measurement environment was a room temperature of 20°C and humidity of 65%, and the subject was a man in his 50s. After blowing air at a speed of approximately 2 m / s, the palm of the hand was placed in contact with the sample for 10 minutes. The initial temperature of the palm in contact with the fabric, i.e., the surface temperature of the fabric and the surface temperature of the palm, as well as the temperature of the palm after 5 and 10 minutes, were measured, and thermographic images were taken.

[0036] [Table 1]

[0037] The temperature of the surface of each fabric was 20.4°C the moment the palm of the hand was placed on it. The temperature of the palm surface also ranged from 29.1°C to 29.6°C, with no particularly noticeable difference.

[0038] After 5 minutes, the surface temperature of pad 1 reached 29.1°C, possibly due to the subject's heat being trapped in the padding inside to provide cushioning. The surface temperature of all other fabrics rose by 5 to 6°C, but pad 4, the present invention, reached 25.6°C, nearly 1°C lower than the other fabrics, and the palm surface temperature also dropped from the initial 29.6°C.

[0039] After 10 minutes, the temperature of both the fabric surface and the palm surface of the mattress pad (4) had dropped, demonstrating that the pad absorbed sweat from the palm and diffused and evaporated it through the fabric, thereby removing heat from the body surface in contact with it and providing a cooling effect.

[0040] This experiment showed that the bedding fabric of the present application has an uneven surface due to the ridges formed by the pile yarn, which reduces the contact area with the body, so the surface temperature of the fabric does not rise even when the body comes into contact with the bedding.The yarn used in the ground structure has a single yarn fineness that is less than half that of the pile yarn, so sweat absorbed from the pile yarn that comes into contact with the body is quickly transferred to the ground structure, and moisture diffuses and evaporates from the large surface area of ​​the mesh-like ground structure (gaps between the pile) and the pile section.

[0041] Furthermore, spaces are formed between the pile gaps, which are made up of only the ground fabric, due to the difference in height between the pile and the fabric, and heat is quickly released from the highly breathable ground fabric.

[0042] Therefore, although the surface temperature of the fabric rises initially, the cooling effect of evaporative cooling is achieved, allowing the fabric to maintain a cool, comfortable temperature.

[0043] Next, a comparative experiment was carried out between a commercially available summer mattress pad made of cotton gauze and the product of the present invention. This product is a popular summer mattress pad on the market.

[0044] Commercially available summer mattress pads have a quilted surface, but are knitted to have an extremely smooth surface shape and are made of 100% cotton.

[0045] On the other hand, in the present application, horizontal ridges made of pile yarn are formed across the entire width of the mattress pad, and the pile yarn is 100% cotton, but the yarn used for the ground weave is about half the thickness of the pile yarn. Specifically, the mattress pad is made up of a ground weave section consisting of only a mesh-like ground weave, spaced every 1.5 cm, and three parallel pile sections consisting of thick ridges of about 5 mm.

[0046] The results are as follows:

[0047] [Table 2]

[0048] Sample 1 is the summer mattress pad according to the present invention. Sample 2 is a commercially available summer mattress pad.

[0049] The subject was exposed to air at a speed of approximately 2 / sec and had their palms in contact with the sample for 10 minutes. The surface temperatures of the fabric and palms were measured at the initial stage, 5 minutes, and 10 minutes after the test, and photographed using a thermograph. The subject was a man in his 50s.

[0050] For samples 1 and 2, the initial palm and palm surface temperatures were the same, but after 5 minutes, there was a difference of nearly 2 degrees in both the palm contact area and palm surface. Even after 10 minutes, the present summer mattress pad 1 still had a high cooling effect, with the temperature of both the contact area and palm surface being more than 1 degree lower.

[0051] We also conducted a Byreck method test on the summer mattress pad of the present invention (sample 1). The comparison was with a commercially available towel advertised for its high absorbency. After 10 minutes, the summer mattress pad of the present invention absorbed 55 mm vertically and 140 mm horizontally, while the commercially available towel absorbed 48 mm vertically and 42 mm horizontally. The results showed that the summer mattress pad of the present invention had superior absorbency in both the vertical and horizontal directions, and exhibited more than three times the moisture diffusion rate in the horizontal direction. In other words, the present invention's mesh-like ground structure provides excellent moisture diffusion. Furthermore, the multiple ridges formed horizontally on the bedding act like radiator fins, rapidly evaporating moisture from the large surface area of ​​the bedding and removing heat during evaporation, providing a superior cooling effect. [Industrial Applicability]

[0052] The bedding according to the present invention can also be used for bedding such as mattress pads and towel blankets, as well as pajamas.

Claims

1. In a fabric knitted by a warp knitting machine, in which pile yarns are fixed to the ground structure, The pile yarn is a yarn containing cotton yarn, The yarns constituting the ground structure are made of fibers containing polyester or nylon fibers with a single yarn fineness that is half or less than that of the cotton fibers used in the pile yarns, This bedding is characterized in that pile gaps consisting of only a mesh-like ground weave and pile sections formed in parallel ridges are arranged alternately.

2. 2. The bedding according to claim 1, wherein the bedding is subjected to a degreasing process to a degree of 50% or more.

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