JP5940271B2 - 3D structure - Google Patents

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JP5940271B2
JP5940271B2 JP2011216175A JP2011216175A JP5940271B2 JP 5940271 B2 JP5940271 B2 JP 5940271B2 JP 2011216175 A JP2011216175 A JP 2011216175A JP 2011216175 A JP2011216175 A JP 2011216175A JP 5940271 B2 JP5940271 B2 JP 5940271B2
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yarn
yarns
moisture
degrees
knitted fabric
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JP2013076181A (en
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白崎 文雄
文雄 白崎
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セーレン株式会社
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Description

  The present invention relates to a three-dimensional structure used for diffusing gas by applying water to water or the like, and in particular, relates to a three-dimensional structure that appropriately retains moisture and has little pressure loss.
  Conventionally, as a function to disperse moderate moisture in a room in a humidifying home appliance, water is stored in a container such as a box, the water passed through a thin pipe is heated to evaporate the water, There is a method of diffusing indoors with such equipment.
  In recent years, water is stored in a container such as a box, or water is allowed to flow from the top to retain moisture such as urethane material, foam material, non-woven fabric, sponge, cotton yarn, etc., placed in contact with the water. A method is also used in which moisture is retained in a material (hereinafter referred to as a moisture retaining material), and air is applied from behind the moisture retaining material with a device such as an electric fan to diffuse and retain the retained moisture. Yes. The moisture retaining material may be fixed, but may move in the vertical direction, the horizontal direction, or rotation.
  In any case, in order to exhibit sufficient humidification performance, it is desirable that the moisture retaining material sufficiently retains moisture and has a small pressure loss. However, the urethane material, foam material, non-woven fabric, sponge, cotton yarn, and the like have a problem of large pressure loss, although their water retention performance is sufficient.
  Therefore, a three-dimensional structure in which two fabrics such as a double raschel are connected by a connecting thread has been studied as a moisture retaining material. Since this three-dimensional structure has an intermediate layer composed of a large number of connecting yarns, moisture is easily held in the gaps between the connecting yarns, and the connecting yarns exist in parallel with the wind direction. This is because the effect on the loss is small.
  For example, Patent Document 1 discloses a three-dimensional knitted fabric that includes two knitted fabrics having a plurality of openings and a plurality of connecting fibers that connect the two knitted fabrics with a gap therebetween. There is disclosed a liquid holding material in which four or more connecting fibers extend, and the total circumference of each cross section of the connecting fibers in a 2.54 cm square is 700 mm or more. By arranging a plurality of connected fibers close to each other in this way, the liquid can be held not only on the fiber surface but also between the fibers by capillary action, so the amount of water that can be held increases. Further, it is described that the liquid retention amount is further improved by making the connecting fiber in a curved shape.
  Patent Document 2 also discloses a humidifying element comprising a fiber sheet material on at least two front and back surfaces and fibers connecting both sheets. And it is described that a moisture retention amount increases by using a multifilament for this connection thread.
  Patent Document 3 discloses a humidifying filter made of a double raschel knitted fabric with improved water absorption using fibers carrying a water absorbing material or the like or water absorbing fibers.
  In these documents, the main purpose is to increase the water holding capacity of the water holding material. However, these water holding materials with improved water holding ability have stopped operating (ie, stopped sending wind). Continue to retain moisture in the latter). If indoor dust, dust, garbage, etc. adhere to this moisture retaining material, mold and bacteria that have lurked there will be propagated by the retained moisture. And when it is operated again, the mold / bacteria itself and a strange odor due to the bacteria are released together with the humidified air, which causes a new problem. Moreover, when many connected fibers are made to exist like patent document 1, since a porosity will become small, pressure loss will become large and there exists a possibility that the spreading | diffusion of water | moisture content may become insufficient.
JP 2009-280927 A JP 2010-255894 A JP 2011-144945 A
  The present invention solves the above-mentioned problems, and exhibits a moisture retention / diffusion capability sufficient for humidification during operation, and a moisture retention material that can quickly release moisture when not in operation. The purpose is to provide.
  The present inventor demonstrates a sufficient ability to retain and diffuse moisture during operation by making the opening difference between the front and back knitted fabrics and the density and angle of the connecting yarn within a specific range, and promptly outside the operation. It has been found that water is released, and the present invention has been achieved.
That is, the present invention is a moisture retaining material that is composed of a three-dimensional structure in which front and back knitted fabrics are connected by connecting yarns, and is used for humidifying air. The area of one opening in the upstream knitted fabric is 1.5 to 25 times the area of one opening in the downstream knitted fabric, and the number of connecting yarns is 144 to 3456 / square inch. A connecting yarn arranged in a direction crossing at an angle of 40 to 80 degrees and a connecting yarn arranged at an angle larger than 80 degrees, and crossing at an angle of 40 to 80 degrees with respect to the knitted fabric This relates to a moisture retaining material in which the connecting yarns arranged in the direction to be 70 to 90% of all connecting yarns and the connecting yarns arranged at an angle larger than 80 degrees are 10 to 30% of all connecting yarns .
  The knitted fabric is preferably 12 to 40 courses and 12 to 25 wales.
Further, the present invention comprises a three-dimensional structure in which the front and back knitted fabrics are connected by connecting yarns, and is a method for producing a moisture retaining material used for humidifying air, and both the front and back knitted fabrics have openings, The area of one opening in the knitted fabric on the upstream side of the wind flow is 1.5 to 25 times the area of one opening in the downstream knitted fabric, and the number of connecting yarns is 144 to 3456 pieces / square inch. A connecting yarn arranged in a direction crossing at an angle of 40 to 80 degrees with respect to the knitted fabric, and a connecting yarn arranged at an angle larger than 80 degrees and an angle of 40 to 80 degrees with respect to the knitted fabric The connecting yarns arranged in the crossing direction are 70 to 90% of all connecting yarns, the connecting yarns arranged at an angle larger than 80 degrees are 10 to 30% of all connecting yarns, and the connecting yarns Is underwrapped between 1-4 stitches of opposing knitting needles A method for producing a water retention material which connects the front and back knitted fabric alternately.
The connecting yarn preferably contains 20 to 60% by weight of a fused yarn.
It is preferable that the three-dimensional structure includes 30 to 70% by weight of the water-absorbing yarn.
It is preferable that the connecting yarn is composed of 1 to 3 knitting yarns.
After the three-dimensional structure is immersed in water as a whole, it is preferably lifted from water and the moisture weight when one hour has passed is preferably 15 to 50% of the moisture weight immediately after the lifting.
The area of one opening in the upstream knitted fabric is preferably 7 to 350 mm 2 , and the area of one opening in the downstream knitted fabric is preferably 1.5 to 120 mm 2 .
  According to the present invention, during operation, a moisture retention material that exhibits sufficient moisture retention / diffusion ability while keeping pressure loss small, and can quickly release moisture when not in operation is provided. can do. Therefore, the growth of mold and bacteria in the moisture retaining material is suppressed, and comfortable humidification can be maintained.
It is sectional drawing in a part of moisture retention material of this invention. It is a perspective view in a part of moisture retention material of the present invention. It is a perspective view in a part of conventional moisture retention material. It is sectional drawing in a part of conventional moisture holding material. It is sectional drawing in a part of moisture retention material of this invention. It is the schematic explaining the knitting machine used by this invention. It is a figure which shows the example of the shape of the moisture holding material of this invention. It is the schematic which shows the use condition of a moisture holding material. It is a figure which shows an example of the organization organization chart for creating the moisture holding material of this invention. It is a figure which shows the other example of the organization organization chart for creating the moisture holding material of this invention. It is a figure which shows the other example of the organization organization chart for creating the moisture holding material of this invention. It is a figure which shows an example of the organization organization chart for creating the conventional moisture retention material.
  The moisture retention material of the present invention is a moisture retention material that is composed of a three-dimensional structure in which front and back knitted fabrics (hereinafter sometimes referred to as front and back fabric structures) are connected by connecting yarns, and is used for humidifying air. The front and back knitted fabrics have openings, and the area of one opening in the upstream knitted fabric (hereinafter sometimes referred to as the front knitted fabric) is the downstream knitted fabric (hereinafter referred to as the back knitted fabric). 1.5 to 25 times the area of one opening in the case of the case, and the number of connecting yarns is 144 to 3456 pieces / square inch, and crosses the knitted fabric at an angle of 40 to 80 degrees. It has the connection thread | yarn arrange | positioned and the connection thread | yarn arrange | positioned at an angle larger than 80 degree | times.
  In the three-dimensional structure used in the present invention, the front and back knitted fabrics each have an opening, but the area of one opening differs between the front and back. The opening on the upstream side where the wind is sent is large and the downstream side is smaller. The wind flows from the knitted fabric having a large opening, passes between the connecting yarns, and moves to the knitted fabric having a small opening. That is, since the opening at the exit is smaller than the entrance, the momentum when blowing out becomes strong and the amount of moisture diffusion increases.
  Further, with such a structure, the connecting yarns exist in a state where they are gathered between the course and the wale from the knitted ground having a large opening to the knitted ground having a small opening. That is, as shown in FIG. 1, since the connecting yarn 3 near the exit (knitted fabric 2 having a small opening) is in a dense state, the amount of moisture retained between the connecting yarns increases, and the knitted fabric 1 at the entrance increases. More moisture will be retained than in the vicinity. Since the wind blows through there, the water can be effectively diffused. When the area ratio of the openings is 1.5 to 25 times, the difference in the maximum density of the connecting yarn between the vicinity of the upstream knitted fabric and the vicinity of the downstream knitted fabric is about 2 to 4 times. FIG. 2 is a perspective view of FIG. Reference numeral 4 is a large opening, and reference numeral 5 is a small opening.
  The area of one opening in the upstream knitted fabric is 1.5 to 25 times the area of one opening in the downstream knitted fabric. Preferably it is 4-25 times, More preferably, it is 4-20 times, More preferably, it is 4-16 times. Of course, openings outside the above range may be mixed so long as the effect is not hindered. The openings are not limited to having the same shape and opening area, and different openings may be mixed. For example, when the openings of the front and back knitted fabrics are all circular, the diameter of the upstream side is about 1.5 to 5 times that of the downstream side. If the area on the upstream side is smaller than 1.5 times, the difference in the size of the opening is small, so the wind speed is greatly reduced near the exit, the amount of moisture diffusion is not sufficient, and if the area exceeds 25 times, the wind speed is increased. Since it becomes too fast, the diffusion occurs before the knitted fabric sufficiently absorbs moisture, resulting in insufficient moisture diffusion. FIG. 3 is a perspective view when the opening is the same on the upstream side and the downstream side.
  In addition, the number of openings is preferably 12 to 40 per square inch in the upstream knitted fabric, and more preferably 16 to 36 per square inch. When the number of openings on the upstream side is less than 12 per square inch, the wind speed becomes too fast, so that diffusion occurs before the knitted fabric sufficiently absorbs moisture, and as a result, the amount of moisture diffusion tends to be insufficient. If the number of pieces per square inch is exceeded, the wind speed tends to be greatly reduced before flowing into the three-dimensional structure. In the knitted fabric on the downstream side, the number is preferably from 32 to 120 pieces / square inch, and more preferably from 36 to 90 pieces / square inch. If the number of openings on the downstream side is less than 32 pieces / square inch, the interval between the connecting yarns becomes too large, so that the moisture cannot be sufficiently retained, and as a result, the amount of moisture diffusion tends to be insufficient, 120 pieces. When exceeding / in 2, the size of the opening becomes too small and the wind speed is greatly reduced.
The shape of the opening is not particularly limited, such as a rhombus, a round shape, an oval shape, or a quadrangle, and the size can be appropriately set according to the gauge, the fineness of the yarn used, the required performance, and the like. Especially, as an area of an opening, it is preferable that a large opening is 7-350 mm < 2 >, and it is more preferable that it is 12-180 mm < 2 >. If the area of the large opening is smaller than 7 mm 2 , the wind speed tends to be greatly reduced before flowing into the three-dimensional structure, and if it exceeds 350 mm 2 , the wind force when passing through the three-dimensional structure becomes strong, and the amount of moisture diffusion Since there is too much, there is a concern that the humidity will rise excessively. Moreover, it is preferable that it is 1.5-120 mm < 2 >, and, as for a small opening, it is more preferable that it is 3-80 mm < 2 >. If the area of the small opening is smaller than 1.5 mm 2 , the wind speed tends to be greatly reduced, and if it exceeds 120 mm 2 , the distance between the connecting yarns becomes too large, so that the moisture tends not to be sufficiently retained.
  The longest diagonal or major axis (hereinafter simply referred to as a diameter) is preferably 3 to 20 mm, more preferably 4 to 15 mm, for the larger opening. Moreover, it is preferable that the smaller diameter is 1.5-12 mm, and it is more preferable that it is 2-10 mm.
  The number of connecting yarns is 144 to 3456 pieces / in 2. Especially, it is preferable that it is 288-2592 piece / square inch. If the number of connecting yarns is less than 144 pieces / square inch, the water retention amount becomes too small. If the connecting yarn exceeds 3456 pieces / square inch, the connecting yarns affect the pressure loss, and the wind speed and the wind pressure are reduced. . In addition, since the size of the opening is different between the upstream knitted fabric and the downstream side, the density of the connecting yarn near the upstream side and the connecting yarn near the downstream side is different on the downstream side (the sparse part and the dense part are near the upstream side). Is relatively clear, but is relatively uniform near the downstream), but the number per unit area is the same.
  The connecting yarns are composed of connecting yarns arranged in a direction crossing the knitted fabric at an angle of 40 to 80 degrees and connecting yarns arranged at an angle larger than 80 degrees. The connecting yarns arranged in the crossing direction are preferably arranged at an angle of 40 to 70 degrees. In addition, the angle of the connecting yarn arranged at an angle larger than 80 degrees is 90 degrees at the maximum. Normally, the moisture retaining material is installed in a humidifier or the like with the knitted fabric standing. However, when all the connecting yarns are arranged at an angle larger than 80 degrees with respect to the knitted fabric, the connecting yarns are formed as shown in FIG. It bends in the same way and the contact surface becomes larger. For this reason, when moisture is cut off and the device is in operation, it is difficult to release the retained moisture, a sufficient humidification effect cannot be expected, and the pressure loss increases. Even when the device is not in operation, moisture will continue to be retained between the connecting yarns, which will encourage the growth of mold and other germs.
  However, by increasing the number of connecting yarns arranged in the crossing direction at 80 degrees or less, the degree of bending of the connecting yarns is not uniform, and the contact surface between the connecting yarns can be reduced. As a result, when the device is in operation, the retained moisture is easily released, sufficient humidification can be expected, and pressure loss is reduced. In the case of equipment stoppage, the amount of moisture to be retained is reduced, and the growth of mold and germs can be suppressed. If the angle is smaller than 40 degrees, it is difficult to increase the thickness of the knitted fabric itself, so that there is a concern that the moisture may be cut off or the thickness may not be maintained and deformed. is there.
  Moreover, when all the connecting yarns are arranged at an angle of 40 to 80 degrees, it is difficult to increase the thickness of the three-dimensional structure, and the contact portions between the connecting yarns increase, so that the retained moisture is hardly released. Become.
  Further, the connecting yarns arranged in a direction crossing at an angle of 40 to 80 degrees with respect to the knitted fabric are 70 to 90% of all the connecting yarns, and the connecting yarns arranged at an angle larger than 80 degrees. It is preferable that it is 10 to 30% of all the connecting yarns. If the connecting yarn having an angle of 40 to 80 degrees is less than 70%, the effect of arranging at a certain angle tends to be small. Further, if the connecting yarn having an angle larger than 80 degrees is less than 10%, it tends to be difficult to maintain the thickness of the three-dimensional structure to some extent.
  Both knitted fabrics are preferably knitted with 12 to 40 courses and 12 to 25 wales. In terms of the number of loops, it is preferably 144 to 1000 / square inch. If less than 12 courses, the gap between courses is wide and there are few loops, so there is a tendency that water cannot be retained sufficiently. If it exceeds 40 courses, the number of loops increases, the gap becomes smaller, and more moisture is retained. However, it tends to be difficult to release and diffuse moisture. Preferably it is 14-34 course, More preferably, it is 14-32 course. Also, if it is less than 12 wales, the gap between the loops between the wales tends to be large and moisture cannot be retained sufficiently. If the wales exceed 25 wales, the gap between the loops becomes small and moisture is released. It tends to be difficult to diffuse. Preferably it is 12-22 wales, More preferably, it is 14-20 wales.
  It is preferable that the connecting yarns alternately connect the front and back knitted fabrics by underwrapping between 1 to 4 stitches of opposing knitting needles. More preferably, it is an underlap between 2 to 4 needles. Here, under-wrapping and connecting between one stitch means that the connecting yarn is knitted to the opposing knitting needle, and under-wrapping between two stitches means that the knitting needle next to the opposing knitting needle is Is to be organized. That is, when the underlap is made between one stitch, the connecting yarn is connected to the knitted fabric at approximately 90 degrees. If there is an underlap of 4 stitches or more, the knitted fabric may be connected at an angle of less than 40 degrees, which is also not preferable as described above.
  Further, it is preferable that the connecting yarn is composed of 1 to 3 knitting yarns, that is, 1 to 3 connecting yarns are fed from one guide. More preferably, one or two yarns are fed from one guide. Thereby, since the knitting yarn having various characteristics (hardness, water absorption, etc.) can be combined with the connecting yarn, it becomes easier to adjust the thickness, moisture retention rate, pressure loss, etc. of the three-dimensional structure.
  In other cases, monofilament yarns, multifilament yarns, spun yarns may be used as the connecting yarns, or a combination thereof may be used. Also, a combination of water-absorbing yarn, fusing yarn, water-repellent yarn, processed yarn and the like may be used. By using yarns having different properties as the connecting yarns, moisture retention and thickness retention can be adjusted.
  For example, when the connecting yarn is mainly composed of monofilaments, the water retention can be adjusted by using a combination of multifilament yarns and processed yarns in order to compensate for the small water absorption rate. Here, normally, when connecting the upper and lower knitted fabrics, two rivets are used. At this time, a monofilament yarn can be introduced into one heel and a water-absorbing yarn can be introduced into the other. . Then, for example, by changing the number of underwraps of each heel, the length, angle and roughness of each knitting yarn can be adjusted. The effect of the monofilament yarn is because the length of the water-absorbing yarn is shorter than that of the monofilament yarn when the monofilament yarn wrinkle is underwrapped between the four stitches and the water-absorbent yarn wrinkle is underwrapped between the two stitches. Becomes larger. By such a simple method, moisture retention, thickness retention, and the like can be appropriately adjusted.
  As described above, when the yarn used for each ridge is a non-water-absorbing yarn or a water-absorbing yarn, the respective properties can be sufficiently exhibited without mixing the respective yarns. That is, water absorption is good in the water-absorbing yarn, and water breakage is good in the non-water-absorbing yarn. Examples of this are shown in FIGS. 5 (a), (b), (c) and (d). In the figure, reference numeral 3a represents a non-water-absorbing yarn, and 3b represents a water-absorbing yarn. As a result, the contradictory properties of retention and release of moisture can be effectively exhibited. In addition, it may be arranged by aligning two lines by a general method such as 1 in 1 out or 2 in 2 out, and the arrangement can be appropriately set.
  Especially, it is preferable that 20-60 weight% of fused yarn is included as a connecting thread, and it is more preferable that 30-50 weight% is included. When the fused yarn is included at this ratio, when the fused yarn is melted by heat and cured, the displacement of the three-dimensional structure is prevented and the connecting yarn thickness and the connecting yarn angle are kept constant. As a result, the moisture retention / diffusion effect can be maintained. Moreover, there is also an effect of retaining moisture in the fused yarn itself.
  Moreover, it is preferable that the said water-absorbing thread | yarn contains 30 to 70 weight% as a three-dimensional structure, It is more preferable to contain 30 to 65 weight%, It is especially preferable to contain 30 to 60 weight%. If the amount is less than 30% by weight, the effect of containing the water-absorbing yarn is small, and if the amount exceeds 70% by weight, a large amount of moisture is retained even when the device is stopped, causing problems such as propagation of various bacteria. This water-absorbing yarn may be used for either the ground texture or the connecting yarn, or may be used for both. When the water-absorbing yarn is used only for the ground structure, a moisture retaining material with good water drainage can be obtained although the moisture diffusing performance is slightly lowered. The water-absorbing yarn is a yarn having a property of adsorbing water on the surface or inside gaps, and generally includes cotton, rayon, nylon and the like. In addition, a yarn having an increased surface area or internal clearance may be used by deformed cross section or processing, and the multifilament yarn, the processed yarn, and the fused yarn also act as a water absorbing yarn here. Here, the non-water-absorbing yarn means a yarn having an official moisture content of about 2% or less.
  In addition, the thickness of the moisture retaining material of the present invention can be appropriately determined depending on the application. Especially, it is preferable that it is 4-14 mm, and it is more preferable that it is 5-10 mm. If the thickness is smaller than 4 mm, it is difficult for the knitted fabric to sufficiently retain moisture, and moisture diffusion tends to be insufficient. If the thickness exceeds 14 mm, pressure loss tends to increase.
  The fineness of the knitting yarn constituting the front and back knitted fabrics used in the present invention can also be appropriately determined according to the application. Especially, it is preferable that it is 56-550 dtex, and it is preferable that it is 84-330 dtex. If it is smaller than 56 dtex, the strength of the knitted fabric tends to be insufficient, or the moisture retention amount tends to be too small. If it exceeds 550 dtex, the knitted fabric becomes hard and difficult to handle, and the retained moisture tends not to be released. It is in.
  Further, the fineness of the connecting yarn used in the present invention is preferably 33 to 440 dtex, and more preferably 56 to 330 dtex. If it is smaller than 33 dtex, it is difficult to maintain the thickness of the three-dimensional structure, and there is a concern that it will be deformed. If it exceeds 440 dtex, the gap between the connecting yarns becomes too small, and the retained moisture tends to be difficult to diffuse and release. It is in.
  Such a three-dimensional structure is knitted by a knitting machine shown in FIG. The knitting yarn released from the beams B1 and B2 passes through the guide bars GB1 and GB2 in the wale direction. Subsequently, the yarn is guided to the guides G1 and G2, knitted by the rear knitting needle N9, passes through the needle hook of the rear portion H7, and becomes the rear base fabric C11. The knitting yarn released from the beams B5 and B6 is passed through the guide bars GB5 and GB6 in the wale direction. Next, the yarn is guided to the guides G5 and G6, knitted by the front knitting needle N10, passes through the needle hook of the front portion H8, and becomes the front base cloth C12. As for the connecting yarn, the knitting yarn released from the beams B3 and B4 passes through the guide bars GB3 and GB4 and is wound in the wale direction, and is then guided to the guides G3 and G4, and alternately by the front and rear knitting needles N9 and N10. It is connected and organized. As a result, the front (front or back) knitted fabric and the rear (back or front) knitted fabric are connected to form a three-dimensional structure.
  The shape of the three-dimensional structure used in the present invention can be appropriately shaped in accordance with the purpose of use, the shape of the equipment to be installed, and the like, thereby forming the moisture retaining material 6. For example, an elliptical shape, a circular shape, a square shape, a triangular shape, a hexagonal shape, and the like can be given. An example is shown in FIG.
  The moisture retaining material 6 obtained in this way is installed inside a device such as a humidifier as shown in FIG. 8, and moves in the vertical and horizontal directions with respect to the water 7 contained in the container. Moisture is retained in the interior by rotation or vibration, or by spraying moisture from the top. And a wind is sent from one knitted fabric direction, a water | moisture content is spread | diffused from the other, and the humidity in air is raised.
  The moisture retention material of the present invention is characterized by a small amount of moisture retention outside the operation of the apparatus. Specifically, after the entire moisture retaining material is immersed in water, it is preferably lifted from the water and the moisture weight when one hour has elapsed is 15 to 50% of the moisture weight immediately after the lifting. More preferably, it is 20 to 40%. If the amount of moisture retained after 1 hour is less than 15%, the moisture will immediately flow down from the retaining material, and the moisture retention is low even when the device is in operation, and the moisture cannot be sufficiently diffused. is there. If it exceeds 50%, the ability to retain moisture is too high, so even when the wind is sent in, resistance due to moisture increases, so that moisture cannot be sufficiently diffused, and it becomes a hotbed for mold and germs outside of operation. Cheap.
  Moreover, it is preferable that the reduction rate of the wind speed after passing the moisture holding material of this invention is the range of 10 to 50%, and it is more preferable that it is 20 to 40%. When the reduction rate is less than 10%, the speed of passing through the moisture retaining material is high, and diffusion occurs before the three-dimensional structure sufficiently retains moisture, and the amount does not tend to be sufficient. is there. If it exceeds 50%, the wind speed is greatly reduced, so that the moisture retained by the three-dimensional structure cannot be sufficiently diffused, and the moisture content tends to be poor.
Example (Measurement of water retention)
The three-dimensional structure was cut into 1 m 2 to obtain a moisture retaining material. The whole was immersed in water to sufficiently retain moisture, then pulled up in a standing state, and the weight immediately after that was measured. Further, after standing for 1 hour, the weight was measured and the water retention rate was calculated.
= (Base fabric weight after 1 hour of immersion)-(Base fabric weight before immersion)
/ (Base fabric weight immediately after immersion)-(base fabric weight before immersion)
(Wind speed reduction rate)
In accordance with JIS A1431, wind was sent from the knitted fabric side having a large opening area of the three-dimensional structure, and the wind speed exhausted from the other knitted fabric side was measured.
= 100- (wind speed after passing through the three-dimensional structure / wind speed before passing through the three-dimensional structure × 100)
Example 1
Using double raschel machine RD6DPLM-77E-14G (made by Meyer), ridges L1 and L2 are ground structures (knitting yarn 220 dtex / 48f, polyester yarn) having openings on the back surface, and ridges L5 and L6 are openings on the surface. A ground structure (knitting yarn 220 dtex / 48f, polyester yarn) having a part was knitted, and the heels L3 and L4 joined the front and back ground structures to form a three-dimensional structure having a thickness of 10 mm. As the connecting yarn, 110 dtex / 1f monofilament yarn (polyester yarn) was used for the collar L3, and 84 dtex / 36f fused yarn (product name: Belcouple, manufactured by KB Seiren) was used for the collar L4. The background density of the three-dimensional structure was 18 courses / 14 wales, and the connecting yarns were knitted with an underlap between three stitches. 90% of the connecting yarns were crossed at an angle of 70 degrees, and 10% were 90 degrees. The moisture retention rate after 1 hour of the obtained moisture retention material was 30%. The evaluation results are summarized in Table 1.
Example 2
Using a double raschel machine RD6DPLM-77E-14G (made by Meyer), 筬 L1 and L2 are ground structures (knitting yarn 84dtex / 48f, polyester yarn) having an opening on the back surface, and 筬 L5 and L6 are openings on the surface. A ground structure (knitting yarn 84dtex / 48f, polyester yarn) having a part was knitted, and the heels L3 and L4 joined the front and back ground structures to form a three-dimensional structure having a thickness of 6 mm. As the connecting yarn, two 56 tex / 1f monofilament yarn (polyester yarn) was aligned on the heel L3, and two 56 dtex / 24f multifilament yarn (polyester yarn) was aligned on the heel L4. The background density of the three-dimensional structure was 14 courses / 14 wales, and the connecting yarns were knitted with an underlap between the four stitches. For the connecting yarn, 80% of the yarns crossed at an angle of 60 degrees accounted for 20%. The moisture retention rate after 1 hour of the obtained moisture retention material was 25%. The evaluation results are summarized in Table 1.
Example 3
Using double raschel machine RD6DPLM-77E-14G (made by Meyer), 筬 L1 and L2 are ground structures (knitting yarn 440dtex / 96f, polyester yarn) having an opening on the back surface, 筬 L5 and L6 are openings on the surface The base structure (knitting yarn 84dtex / 48f, polyester yarn) having a part was knitted, and the heels L3 and L4 joined the front and back ground structures to form a three-dimensional structure having a thickness of 12 mm. As the connecting yarn, a 110 dtex / 1f monofilament yarn (polyester yarn) was used for the heel L3, and a 110 dtex / 48f multifilament yarn (polyester yarn) was used for the heel L4. The background density of the three-dimensional structure was 14 courses / 14 wales, and the connecting yarns were knitted with an underlap between the three stitches. 70% of the connecting yarns were crossed at an angle of 70 degrees, and 30% were 90 degrees. The water retention after 1 hour of the obtained water retention material was 45%. The evaluation results are summarized in Table 1.
Example 4
Using double raschel machine RD6DPLM-77E-14G (made by Meyer), 筬 L1 and L2 are ground structures (knitting yarn 167dtex / 48f, polyester yarn) having openings on the back, and 筬 L5 and L6 are openings on the surface. A ground structure (knitting yarn 84dtex / 48f, polyester yarn) having a part was knitted, and the heels L3 and L4 were knitted into a solid structure having a thickness of 8 mm by connecting the front and back ground structures. As the connecting yarn, a 56 dtex / 1f monofilament yarn (polyester yarn) is used for the heel L3, and two 56 dtex / 1f monofilament yarn (polyester yarn) is aligned on the heel L4 and a 56 dtex / 24 f fused yarn (product name: Belcouple, KB Seiren) was used. The density of the background of the three-dimensional structure was 14 courses / 14 wales, and the connecting yarn was knitted with an underlap between three stitches. 70% of the connecting yarns were crossed at an angle of 70 degrees, and 30% were 90 degrees. The moisture retention rate after 1 hour of the obtained moisture retention material was 35%. The evaluation results are summarized in Table 1.
Example 5
Using double raschel machine RD6DPLM-77E-18G (made by Meyer), heels L1 and L2 are ground structures (knitting yarn 110 dtex / 48f, polyester yarn) having openings on the back, and heels L5 and L6 are openings on the surface. A ground structure (knitting yarn 110 dtex / 48f, polyester yarn) having a part was knitted, and the heels L3 and L4 joined the front and back ground structures to form a three-dimensional structure having a thickness of 5 mm. As the connecting yarn, a 56 dtex-1f monofilament yarn (polyester yarn) was used for the collar L3, and a 56 dtex / 24f fused yarn (product name: Belcouple, manufactured by KB Seiren) was used for the collar L4. The density of the background of the three-dimensional structure was 20 courses / 18 wales, and the connecting yarn was knitted with an underlap between three stitches. 70% of the connecting yarns were crossed at an angle of 75 degrees, and 30% were 90 degrees. The water retention after 1 hour of the obtained water retention material was 45%. The evaluation results are summarized in Table 1.
Example 6
Using double raschel machine RD6DPLM-77E-18G (made by Meyer), heels L1 and L2 are ground structures (knitting yarn 110 dtex / 48f, polyester yarn) having openings on the back, and heels L5 and L6 are openings on the surface. A ground structure (knitting yarn 110 dtex / 48f, polyester yarn) having a part was knitted, and the heels L3 and L4 joined the front and back ground structures to form a solid structure having a thickness of 8 mm. As the connecting yarn, two 56T-1 dtex monofilament yarns (polyester yarns) were aligned on the heel L3, and a 56 dtex / 1f monofilament yarn (polyester yarn) was used on the heel L4. The density of the background of the three-dimensional structure was 20 courses / 18 wales, and the connecting yarn was knitted with an underlap between three stitches. 70% of the connecting yarns were crossed at an angle of 80 degrees, and 30% were 90 degrees. The water retention after 1 hour of the obtained water retention material was 45%. The evaluation results are summarized in Table 1.
Example 7
Using double raschel machine RD6DPLM-77E-14G (made by Meyer), ridges L1 and L2 are ground structures (knitting yarn 220 dtex / 48f, polyester yarn) having openings on the back surface, and ridges L5 and L6 are openings on the surface. A ground structure (knitting yarn 220 dtex / 48f, polyester yarn) having a part was knitted, and the heels L3 and L4 joined the front and back ground structures to form a three-dimensional structure having a thickness of 10 mm. As the connecting yarn, 110 tex / 1f monofilament yarn (polyester yarn) was used 1-in-1 out for the heel L3, and 110 dtex / 1f monofilament yarn (polyester yarn) was used 1-in-1 out for the heel L4. The background density of the three-dimensional structure was 14 courses / 14 wales, and the connecting yarns were knitted with an underlap between the three stitches. As for the connecting yarn, 80% of the yarns crossed at an angle of 70 degrees and 20% of those which were 90 degrees. The moisture retention rate after 1 hour of the obtained moisture retention material was 15%. The evaluation results are summarized in Table 1.
Example 8
Using a double raschel machine RD6DPLM-77E-22G (made by Meyer), 筬 L1 and L2 are ground structures (knitting yarn 110dtex / 48f, polyester yarn) having an opening on the back surface, and 筬 L5 and L6 are openings on the surface. A ground structure (knitting yarn 110 dtex / 48f, polyester yarn) having a part was knitted, and the heels L3 and L4 joined the front and back ground structures to form a solid structure having a thickness of 8 mm. As the connecting yarn, a 110 dtex / 1f monofilament yarn (polyester yarn) was used in 1-in-1 out for 筬 L3, and a 110 dtex / 1f monofilament yarn (polyester yarn) was used in 1-in-1 out for 筬 L4. The background density of the three-dimensional structure was 20 courses / 22 wales, and the connecting yarns were knitted with an underlap between two stitches. As for the connecting yarn, 80% of the yarns crossed at an angle of 80 degrees and 20% of those which were 90 degrees. The moisture retention rate after 1 hour of the obtained moisture retention material was 20%. The evaluation results are summarized in Table 1.
Comparative Example 1
Using double raschel machine RD6DPLM-77E-14G (made by Meyer), heels L1 and L2 are ground structures (knitting yarn 220 dtex / 48f, polyester yarn) having openings on the back surface, and heels L5 and L6 are openings on the surface. A knitted fabric (knitting yarn 220 dtex / 48f, polyester yarn) having knots, and heels L3 and L4 joined the front and back fabrics to form a three-dimensional structure having a thickness of 10 mm. As the connecting yarn, 110 dtex / 1f monofilament yarn (polyester yarn) was used for the collar L3, and 84 dtex / 48f fused yarn (product name: Belcouple, manufactured by KB Seiren) was used for the collar L4. The background density of the three-dimensional structure was 14 courses / 14 wales, and the connecting yarn was knitted with an underlap between one stitch. The connecting yarn at 90 degrees was 100%. The moisture retention rate after 1 hour of the obtained moisture retention material was 60%. The evaluation results are summarized in Table 1.
Comparative Example 2
Using double raschel machine RD6DPLM-77E-14G (made by Meyer), heels L1 and L2 are ground structures (knitting yarn 220 dtex / 48f, polyester yarn) having openings on the back surface, and heels L5 and L6 are openings on the surface. A knitted fabric (knitting yarn 220 dtex / 48f, using polyester yarn) was knitted, and heels L3 and L4 joined the front and back fabrics to form a three-dimensional structure having a thickness of 10 mm. As connecting yarns, 110 dtex / 1f monofilament yarn (polyester yarn) was used for the heel L3, and 56 dtex / 24f fused yarn (product name: Belcouple, manufactured by KB Seiren) was used for the heel L4. The background density of the three-dimensional structure was 14 courses / 14 wales, and the connecting yarn was knitted with an underlap between one stitch. The connecting yarn at 90 degrees was 100%. The moisture retention rate after 1 hour of the obtained moisture retention material was 65%. The evaluation results are summarized in Table 1.
Comparative Example 3
Using double raschel machine RD6DPLM-77E-12G (made by Meyer), heels L1 and L2 are ground structures (knitting yarn 220 dtex / 48f, polyester yarn) having openings on the back surface, and heels L5 and L6 are openings on the surface. A knitted fabric (knitting yarn 220 dtex / 48f, polyester yarn) having knots, and heels L3 and L4 joined the front and back fabrics to form a three-dimensional structure having a thickness of 10 mm. As the connecting yarn, 110 dtex / 1f monofilament yarn (polyester yarn) was used for the heel L3, and 117 dtex cotton spun yarn (50/1) was used for the heel L4. The background density of the three-dimensional structure was 12 courses / 12 wales, and the connecting yarn was knitted with an underlap between one stitch. The connecting yarn at 90 degrees was 100%. The moisture retention rate after 1 hour of the obtained moisture retention material was 60%. The evaluation results are summarized in Table 1.
Comparative Example 4
Using a double raschel machine RD6DPLM-77E-20G (made by Meyer), 筬 L1 and L2 are ground structures (knitting yarn 110dtex / 48f, polyester yarn) having an opening on the back surface, and 筬 L5 and L6 are openings on the surface. A ground structure (knitting yarn 167 dtex / 48f, polyester yarn) having a portion was knitted, and the heels L3 and L4 joined the front and back ground structures to form a three-dimensional structure having a thickness of 6 mm. As the connecting yarns, two 56 dtex / 1f monofilament yarns (polyester yarns) were used as the alignment yarn L3, and two 84 dtex / 36f processed yarns (polyester yarn) were used as the alignment yarn L4. The background density of the three-dimensional structure was 40 courses / 24 wales, and the connecting yarns were knitted with an underlap between two stitches. Of the connecting yarns, those that crossed at an angle of 70 degrees accounted for 50%, and those that were 90 degrees accounted for 50%. The moisture retention rate after 1 hour of the obtained moisture retention material was 60%. The evaluation results are summarized in Table 1.
Comparative Example 5
Using double raschel machine RD6DPLM-77E-24G (made by Meyer), heels L1 and L2 are ground structures (knitting yarn 110 dtex / 48f, polyester yarn) having openings on the back surface, and heels L5 and L6 are openings on the surface. A ground structure (knitting yarn 110 dtex / 48f, polyester yarn) having a portion was knitted, and the heels L3 and L4 joined the front and back ground structures to form a three-dimensional structure having a thickness of 3 mm. As connecting thread, draw 33 dtex / 1f monofilament yarn (polyester yarn) and 56 dtex / 1f monofilament yarn (polyester yarn) on 揃 え L3, and draw two 84 dtex / 36f processed yarn (polyester yarn) on 筬 L4. Used in alignment. The background density of the three-dimensional structure was 36 courses / 28 wales, and the connecting yarn was knitted with an underlap between two stitches. As for the connecting yarns, those that were crossed at an angle of 80 degrees accounted for 40%, and those that were 90 degrees were 60%. The moisture retention rate after 1 hour of the obtained moisture retention material was 70%. The evaluation results are summarized in Table 1.
DESCRIPTION OF SYMBOLS 1 Upstream knitted fabric 2 Downstream knitted fabric 3 Connecting yarn 3a Connecting yarn (non-water-absorbing yarn)
3b Connecting thread (water absorbing thread)
4 Large opening 5 Small opening 6 Moisture retention material 7 Water B Beam G Guide GB Guide bar H Needle hook N Knitting needle C Base cloth

Claims (8)

  1. It is a moisture retaining material that is composed of a three-dimensional structure in which the front and back knitted fabrics are connected by connecting yarns, and is used to humidify the air. Both the front and back knitted fabrics have openings, and the upstream and downstream knitted fabrics The area of one opening is 1.5 to 25 times the area of one opening in the downstream knitted fabric, the number of connecting yarns is 144 to 3456 yarns / square inch, and 40 to 80 degrees with respect to the knitted fabric. A connecting yarn arranged in a direction crossing at an angle and a connecting yarn arranged at an angle larger than 80 degrees, and arranged in a direction crossing at an angle of 40 to 80 degrees with respect to the knitted fabric A moisture retaining material , wherein the connected yarn is 70 to 90% of the total connected yarn, and the connected yarn disposed at an angle larger than 80 degrees is 10 to 30% of the total connected yarn .
  2. The knitted fabric is 12 to 40 courses, moisture holding material of claim 1 Symbol placement is 12 to 25 wales.
  3. The front and back knitted fabrics are made of a three-dimensional structure connected by connecting yarns, and are a method for producing a moisture retaining material used to humidify air. Both the front and back knitted fabrics have openings, and the upstream side of the wind flow The area of one opening in the knitted fabric is 1.5 to 25 times the area of one opening in the knitted fabric on the downstream side, and the number of connecting yarns is 144 to 3456 yarns / square inch. A connecting yarn arranged in a direction crossing at an angle of 80 degrees and a connecting yarn arranged at an angle larger than 80 degrees, and in a direction crossing at an angle of 40 to 80 degrees with respect to the knitted fabric The connecting yarns arranged are 70 to 90% of all connecting yarns, the connecting yarns arranged at an angle larger than 80 degrees are 10 to 30% of all connecting yarns, and the connecting yarns are opposed knitting needles. 1 ~ 4 under lap between the stitches, and exchange the front and back knitted fabric Method for producing a moisture holding material linked to.
  4. The connecting yarns, the moisture holding material of claim 1 or 2, wherein contains a fusible yarn 20 to 60 wt%.
  5. The three-dimensional structure, moisture holding material of claim 1, 2 or 4, wherein contains a water-absorbent yarns 30-70 wt%.
  6. The connecting yarns, 1-3 pieces of claims and a knitting yarn 1, 4 or moisture holding material 5.
  7. The three-dimensional structure, after immersion of the entire water, pulled from the water, the water weight at the time of lapse of one hour, 1,2 pulling 15 to 50% water by weight immediately after, 4, 5 or the 6. The moisture retaining material according to 6 .
  8. The area of one opening in the upstream side of the knitted fabric is 7~350mm 2, claim 2 area of one opening in the knitted fabric on the downstream side is 1.5~120m m 2, 4, 5 , water retention material 6 or 7, wherein.
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