阅读说明：本技术 双功能吸收和降温纺织品 (Dual-function absorption and cooling textile ) 是由 大卫·查德·劳伦斯 于 2019-01-25 设计创作，主要内容包括：本文公开了这样的经编间隔双功能织物结构：其在一面上提供吸收汗液的能力,并且在另一面上提供不管被润湿还是干燥都将皮肤降温至低于当前温度的能力。针织物使用一起共同工作的四根独立纱线以产生增强的降温。针织物可以包括经编间隔和圆形针织间隔物材料。还可以采用多种整理方法来增强织物的降温能力。(Disclosed herein are warp-knitted spacer dual function fabric structures: it provides the ability to absorb sweat on one side and cool the skin below the current temperature whether wet or dry on the other side. The knit uses four individual yarns working together to produce enhanced cooling. The knit may include warp knit spacing and circular knit spacer material. Various finishing methods may also be employed to enhance the cooling capacity of the fabric.)

1. A dual-sided absorbent and cooling textile, comprising:

an absorbent side formed from two separate yarns including a first yarn and a second yarn,

wherein the first yarn and the second yarn are located on separate but adjacent knitting bars during construction of the double-sided absorbent and cooling textile, an

Wherein the first and second yarns together form loops on the absorbent surface having a pile height greater than 0.2 millimeters for absorbing moisture from a skin surface; and

a cooling surface formed by four independent yarns including the first yarn, the second yarn, the evaporative cooling yarn, and the elastic yarn,

wherein the cooling surface is configured to transport absorbed moisture from the absorbing surface to expose the absorbed moisture to the cooling surface for evaporation.

2. The dual sided absorbent and cooling textile of claim 1, wherein the dual sided absorbent and cooling textile cools the skin surface on the cooling side up to 20 ° F and up to 40 ° F relative to core body temperature when the dual sided absorbent and cooling textile is wetted.

3. The dual sided absorbent and cooling textile of claim 1, wherein the dual sided absorbent and cooling textile, when wetted, cools the skin surface for a period of time exceeding 4 hours.

4. The dual sided absorbent and cooling textile of claim 1, wherein the dual sided absorbent and cooling textile is constructed using a warp knitted spacer structure.

5. The dual sided absorbent and cooling textile of claim 1, wherein the dual sided absorbent and cooling textile is constructed using a warp-knit spacer loom.

6. The dual sided absorbent and cooling textile of claim 1, wherein the first yarn is a microfine filament, microfiber, conjugated bicomponent polyester/nylon, cooling polyester askin, or cooling nylon aqua-x.

7. The dual sided absorbent and cooling textile of claim 1, wherein the second yarn is microfine filament, microfiber, conjugate bicomponent polyester/nylon, cooling polyester askin, or cooling nylon aqua-x.

8. The dual sided absorbent and cooling textile of claim 1, wherein the evaporative cooling yarns are ashin or aqua-x.

9. The dual sided absorbent and cooling textile of claim 1, wherein the dual sided absorbent and cooling textile has a weight of 100g/m²To 600g/m²。

10. The dual sided absorbent and cooling textile of claim 1, wherein the elastic yarn is spandex.

11. A double-sided absorbent and cooling textile produced using a warp-knitted spacer structure, comprising:

an absorption surface with a plurality of coils,

wherein a first bar on the absorbent side uses a first yarn on a first course using a 2-2/0-0 stitch symbol,

wherein a second bar on said absorbent side uses a second yarn on said first course using a 2-2/0-0 stitch symbol,

wherein a third bar on the stitch absorption side uses a third yarn on the first course with a 1-0/2-3 stitch symbol,

wherein a fourth bar on said stitch absorption side uses a fourth yarn on said first course with a 0-0/2-2 stitch symbol; and

a non-coil cooling surface is arranged on the inner wall of the coil,

wherein a first bar on said non-loop cooling surface simultaneously uses said first yarn from a first bar on said absorbent surface with a 1-0/1-2 stitch symbol on said first course,

wherein a second bar on said non-loop cooling surface simultaneously uses said second yarn from a second bar on said absorbent surface with a 1-0/1-2 stitch symbol on said first course,

wherein a third bar on the non-loop cooling surface simultaneously uses the third yarn from the third bar on the absorbent surface with a 2-1/1-2 stitch symbol on the first course,

wherein a fourth bar on the non-loop cooling surface simultaneously uses the fourth yarn from the fourth bar on the absorbent surface with a 1-2/1-0 stitch symbol on the first course,

wherein the first yarn is a microfine filament polyester yarn,

wherein the second yarn is a microfine filament polyester yarn,

wherein the third yarn is a temperature reducing polyester yarn, an

Wherein the fourth yarn is an elastic yarn.

12. The dual sided absorbent and cooling textile of claim 11, wherein the first yarn is a 50 denier per 72 filament draw textured yarn.

13. The dual sided absorbent and cooling textile of claim 12, wherein the second yarn is a 50 denier per 72 filament draw textured yarn.

14. The double sided absorbent and cooling textile of claim 13, wherein the fourth yarn is spandex.

15. A double-sided absorbent and cooling textile produced using a warp-knitted spacer structure, comprising:

a coil absorption surface; and

a non-coil cooling surface is arranged on the inner wall of the coil,

wherein a first bar on the loop absorption side uses a microfiber polyester yarn using a 2-2/0-0 stitch symbol on a first course,

wherein a first bar on the non-loop cooling surface uses microfiber polyester yarn with a 1-0/1-2 stitch designation on the first course,

wherein a second bar on said loop absorption side uses a microfiber polyester yarn using a 2-2/0-0 stitch symbol on said first course,

wherein a second bar on the non-loop cooling surface uses microfiber polyester yarn with a 1-0/1-2 stitch designation on the first course,

wherein a third bar on said loop absorption side uses an evaporative cooling polyester yarn using a 1-0/2-3 stitch symbol on said first course,

wherein a third bar on said non-loop cooling surface uses an evaporative cooling polyester yarn with a 2-1/1-2 stitch designation on said first course,

wherein a fourth bar on said stitch absorption side uses an elastic yarn on said first course using a 0-0/2-2 stitch symbol, an

Wherein a fourth bar on said non-stitch cooling surface uses an elastic yarn on said first course using a 1-2/1-0 stitch designation.

16. A double-sided absorbent and cooling textile produced using a warp-knitted spacer structure, comprising:

a coil absorption surface; and

a non-coil cooling surface is arranged on the inner wall of the coil,

wherein a first bar on the loop absorption side uses a microfiber polyester yarn using a 2-2/0-0 stitch symbol on a first course,

wherein a first bar on the non-loop cooling surface uses microfiber polyester yarn with a 1-0/1-2 stitch designation on the first course,

wherein a second bar on said loop absorption side uses a microfiber polyester yarn using a 2-2/0-0 stitch symbol on said first course,

wherein a second bar on the non-loop cooling surface uses microfiber polyester yarn with a 1-0/1-2 stitch designation on the first course,

wherein a third bar on said loop absorption side uses an evaporative cooling nylon yarn with a 1-0/2-3 stitch designation on said first course,

wherein a third bar on said non-loop cooling surface uses an evaporative cooling nylon yarn with a 2-1/1-2 stitch designation on said first course,

wherein a fourth bar on said stitch absorption side uses an elastic yarn on said first course using a 0-0/2-2 stitch symbol, an

Wherein a fourth bar on said non-stitch cooling surface uses an elastic yarn on said first course using a 1-2/1-0 stitch designation.

17. A double-sided absorbent and cooling textile produced using a warp-knitted spacer structure, comprising:

a coil absorption surface; and

a non-coil cooling surface is arranged on the inner wall of the coil,

wherein a first bar on the loop absorption side uses an evaporative cooling polyester yarn on a first course using a 2-2/0-0 stitch designation,

wherein a first bar on said non-loop cooling surface uses an evaporative cooling polyester yarn with a 1-0/1-2 stitch designation on said first course,

wherein a second bar on said loop absorption side uses an evaporative cooling polyester yarn on said first course using a 2-2/0-0 stitch designation,

wherein a second bar on said non-loop cooling surface uses an evaporative cooling polyester yarn with a 1-0/1-2 stitch designation on said first course,

wherein a third bar on said loop absorption side uses an evaporative cooling polyester yarn using a 1-0/2-3 stitch symbol on said first course,

wherein a third bar on said non-loop cooling surface uses an evaporative cooling polyester yarn with a 2-1/1-2 stitch designation on said first course,

wherein a fourth bar on said loop absorption side uses spandex yarn for a 0-0/2-2 stitch symbol on said first course, an

Wherein a fourth bar on said non-loop cooling surface uses spandex yarn to use a 1-2/1-0 stitch symbol on said first course.

18. A double-sided absorbent and cooling textile produced using a warp-knitted spacer structure, comprising:

a coil absorption surface; and

a non-coil cooling surface is arranged on the inner wall of the coil,

wherein a first bar on the loop absorption side uses an evaporative cooling polyester yarn on a first course using a 2-2/0-0 stitch designation,

wherein a first bar on said non-loop cooling surface uses an evaporative cooling polyester yarn with a 1-0/2-3 stitch designation on said first course,

wherein a second bar on said loop absorption side uses an evaporative cooling polyester yarn on said first course using a 2-2/0-0 stitch designation,

wherein a second bar on said non-loop cooling surface uses evaporative cooling polyester yarn with a 1-0/2-3 stitch designation on said first course,

wherein a third bar on said loop absorption side uses an evaporative cooling polyester yarn using a 1-0/2-3 stitch symbol on said first course,

wherein a third bar on said non-loop cooling surface uses an evaporative cooling polyester yarn with a 2-1/1-2 stitch designation on said first course,

wherein a fourth bar on said loop absorption side uses spandex yarn for a 0-0/2-2 stitch symbol on said first course, an

Wherein a fourth bar on said non-loop cooling surface uses spandex yarn to use a 1-2/1-0 stitch symbol on said first course.

19. The dual sided absorbent and cooling textile according to claim 1, wherein the loop has a pile height of 2mm to 3 mm.

20. The dual sided absorbent and cooling textile according to claim 1, wherein the loops have a pile height of 0.5mm to 10 mm.

21. A dual-sided absorbent and cooling textile, comprising:

an absorption surface having a plurality of coils; and

a cooling surface opposite the absorbing surface;

wherein the pile height of the plurality of loops is proportional to the duration of conductive cooling of the double-sided absorbent and cooling textile, an

Wherein the cooling surface has a Q-Max when wetted that is at least twice the Q-Max when the cooling surface is dry.

22. The dual sided absorbent and cooling textile of claim 21, wherein the cooling side has a Q-Max when wetted that is at least twice the Q-Max of the absorbent side when wetted.

Technical Field

The present invention relates to a knitted textile that provides a dual function double sided textile capable of absorbing up to four times its weight of sweat on a loop absorbing side. Furthermore, when the textile is wetted for activation, it may provide increased conductive cooling on the non-loop (flat) absorbent surface. More particularly, the present invention relates to a multi-layer warp-knitted spacer fabric structure that provides the ability to effectively absorb perspiration from the skin, while the textile (primarily when wetted, and secondarily in a dry state) can be used to cool the skin below the current temperature of the skin for an extended period of time. Described in this patent application is an integrally formed warp-knitted spacer structure consisting of four yarns working together to produce the textile.

Background

Previous wetness activated cooling textiles used woven and double knit structures that utilized absorbent yarns with moisture absorption characteristics. The first layer, which is located next to the skin, provides a continuous cooling effect. However, such fabrics often dry quickly and/or warm to the skin temperature of the user, thereby negating any cooling effect. Furthermore, these fabrics have limited sweat absorption capacity, since they tend to be thinner than normal heavy-pile towels and are not constructed with loops intended to absorb sweat. Accordingly, there is a need for a dual function absorbent and cooling textile: it employs more advanced yarn and construction techniques and alleviates the drawbacks of current cooling textiles.

Disclosure of Invention

The present invention relates generally to textile fabrics and, more particularly, to a dual function absorbent and cooling warp knit spacer fabric structure that provides sweat absorption capability on one side of the fabric while also having a cooling side that can cool the skin (primarily when wetted, and secondarily in a dry state) to below the current temperature of the skin for an extended period of time.

Drawings

Fig. 1 depicts a representative cross-sectional view of a dual function absorbing and cooling textile showing the different layers of the textile.

Fig. 2A-2D depict cross-sectional views of yarn filaments that may be used in the construction of a dual function absorbent and cooling fabric.

Fig. 3A-3E depict exemplary stitch symbols for a first side of a dual function absorbing and cooling textile.

Fig. 4A-4E depict exemplary stitch symbols for the second (opposite) side of a dual function absorbing and cooling textile.

FIG. 5 depicts a combined stitch symbol for a combined first face and second face.

Fig. 6 depicts a brushing process.

Fig. 7 depicts an embossing process.

Figure 8 depicts a diagram of a brushed and embossed cooling fabric.

Detailed Description

Warp knitting spacing structure

As shown in fig. 1, first side 102 of dual function absorbing and cooling textile 100 includes a plurality of coils for absorbing moisture or sweat from skin surface 104. Second side 106 of dual function textile 100 is a cooling side and is preferably flat (particularly with respect to first side 102). Preferably, the pile height of the raised loops of the first face 102 is greater than 0.2 millimeters. Raised coils on the first side 102 may be omitted in some portions to accommodate the pattern or other design in which the coils are used. The pile height may also vary across the surface of the first face 102.

Preferably, second face 106 does not include any raised knops. The pile height of the coils may vary to other lengths depending on the desired absorbency, duration, and amount of conductive cooling of dual function textile 100. As used herein, pile is a fabric effect formed by a plurality of loops (or other upstanding yarns) extending over the surface of the fabric. The pile height is the height of the plurality of loops on the fabric surface.

The second side 106, opposite the first side 102, includes yarns intended to impart additional evaporative cooling properties, thereby utilizing the science of the heat of evaporation to impart cooling to the consumer.

One embodiment of dual function textile 100 is intended to be worn next to the skin 104 of a user (e.g., an athlete). Dual function textile 100 may be formed into an entire garment, such as a shirt or a pair of shorts, or strategically incorporated into a garment that requires additional cooling, such as near the shoulders/armpits of the user. Dual function textile 100 can also be used to form a stand-alone cooling product such as a hair band, towel, hat, etc.

The evaporative cooling effect of dual function textile 100 is activated when dual function textile 100 is wetted, twisted, and snapped (snap) or spun in air. The cooling effect of dual function textile 100 described herein utilizes the principle of evaporative cooling (heat of evaporation). The principle is detailed as water must be subjected to thermal energy to change from liquid to vapor. Once evaporation occurs, this heat from the liquid water is carried away due to the evaporation, resulting in cooler liquid being left in dual function textile 100.

After dual function textile 100 is wetted and preferably twisted to remove excess water, a snap or quick turn in air is a recommended process as it helps to facilitate and expedite the movement of moisture from first side 102 where water is stored to second side 106 where more water evaporation to the environment occurs. Snapping or rapid rotation in air also increases the evaporation rate and causes the material temperature to decrease more rapidly by exposing a greater surface area of dual function textile 100 to air and increased airflow. More specifically, dual function textile 100 serves as a means to facilitate and accelerate the evaporation process. The manufacturing process described in this patent has been shown to provide additional cooling benefits relative to other fabrics.

Once the temperature of the remaining water in the outer evaporation layer (e.g., second side 106) drops by evaporation, heat exchange occurs as follows: occurs within the water by convection, between the water and dual function textile 100 by conduction, and within dual function textile 100 by conduction. Accordingly, the temperature of dual function textile 100 decreases. The evaporation process continues further by wicking water from the coil face to the non-coil face until the stored water is used up. The evaporation rate decreases as the temperature of the material decreases. The temperature of dual function textile 100 gradually drops to a point where a balance is reached between the rate of heat absorption from the environment into the material and the rate of heat release by evaporation.

Once second side 106 of wetted dual function textile 100 is placed on the skin of the user, cooling energy from dual function textile 100 is transferred by conduction from second side 106 to skin surface 104. After cooling energy transfer has occurred, the temperature of dual function textile 100 is increased to equilibrate with the temperature of skin surface 104. Once this occurs, the wetted dual function textile 100 can be easily reactivated by snapping or rapid rotation to allow the temperature to drop again. As mentioned above, the method of manufacturing dual function textile 100 described in this patent has been demonstrated to provide additional cooling benefits over previous inventions.

Once the wetted dual function textile 100 is placed, the first side 102 may be used to wipe perspiration or moisture from the skin surface 104. The user may use dual function textile 100 in this manner until the textile becomes fully saturated. To reactivate dual function textile 100, it may then be wetted, twisted, snapped, etc. Dual function textile 100 may even be activated with the user's perspiration.

To create the unique cooling effect of dual function textile 100, it is preferred to use a warp knit spacer structure to create a textile with dual functional layers that include different yarns in the same material. The second side 106 (cooling side) which consists essentially of polyester or nylon yarns (with optional modified cross-section yarns) is embedded with cooling minerals (or particles) for transporting and evaporating moisture while providing a cool touch. The opposite first side 102 (the absorbent side) consists essentially of polyester or nylon yarns designed with special absorbent yarns that enable the textile to have an enhanced ability to absorb, transport and retain moisture.

Dual function textile 100 also preferably includes an elastic yarn, such as spandex, that provides dual function textile 100 with improved drape and stretch characteristics. The elastic yarns also provide hydrophobic characteristics to rapidly disperse moisture into the more absorbent and evaporative yarns of dual function textile 100. The intended end use of dual function textile 100 provides dual cooling and absorption of perspiration from an activity, such as attending an athletic event, sporting activity, leisure activity, or doing work around a house by itself. Dual function textile 100 may be used in any application where it is desirable to keep cool while in heat.

The dual function cooling and absorbing textile is unique in its ability to serve both the absorbing and cooling functions in the same material. Accordingly, dual function textile 100 may be used in the apparel and/or apparel industries to provide dual use of both absorption and conduction cooling with an amount of increased absorption capacity and cooling capacity relative to current options on the market.

Fig. 2A-2D depict cross-sectional views of yarn filaments that may be used in the construction of dual function textile 100. A cross-section of a single filament of stretchable synthetic (elastic) yarn, such as spandex, is depicted in fig. 2D. As will be described later, the elastic yarn is typically used on bar 4 during construction and provides both drape and stretch properties to bi-functional textile 100.

Other bars (e.g., bars 1-3) may use a wide variety of other yarns. Fig. 2A and 2C depict nylon or polyester (evaporated) yarns with unique cross-sections that may be embedded with minerals or particles (e.g., jade or mica) to transport and evaporate moisture from the skin surface 104 while still providing conductive cooling and a cool touch. Examples of suitable evaporation yarns having such cross-sections include Mipan aqua-x and askin, both manufactured by Hyosung Corporation of Korea, which also provide UV protection.

Fig. 2B depicts a cross-section of conjugated bi-component polyester and nylon (absorbent) yarns having a special star-shaped cross-section formed by a treatment applied after knitting bi-functional textile 100. Such yarns are more absorbent than conventional absorbent yarns used in most cooling fabrics. The yarn used in the first side 102 is preferably Hyosung Mipan XF, which wicks at a rate and distance after 2 minutes as measured using AATCC method 197 is at least twice that of cotton of equal density.

Details of knitting structures

Dual function textile 100 is preferably constructed using a warp-knitting spacer loom. Further, the weight range of the bi-functional textile 100 is preferably 100g/m²To 600g/m². The depicted embodiment of dual function textile 100 preferably has the following fiber content:

scheme 1-polyester/spandex blend-62% polyester, 28% cooling polyester, 10% spandex (which can vary by + -10% for each fiber).

Scheme 2-polyester/nylon/spandex blend-60% polyester, 30% cooling nylon, 10% spandex (can vary by ± 10% for each fiber).

Scheme 3-91% of cooling polyester and 9% of spandex.

Scheme 4-91% polyester + 9% spandex.

Examples of stitch designations for producing these different versions of dual function textile 100 will now be described. The symbols on each bar can be modified to produce various alternatives. Fig. 3A to 3D respectively depict stitch symbols for the guide bars 1 to 4 of the first face 102 (loop face) according to scheme 1. Similarly, fig. 4A through 4D depict stitch symbols for bars 1 through 4, respectively, of the second face 106 according to scenario 1. Fig. 3E depicts a combined stitch symbol for the first face 102 according to scenario 1, and fig. 4E depicts a combined stitch symbol for the second face 106 according to scenario 1. Finally, fig. 5 depicts the combination stitch symbol of option 1 for the entirety of dual function textile 100. In the described solution, the front and rear guide bars share the same end of the yarn.

Scheme 1-warp knitting interval-polyester/spandex blend-90% polyester, 10% spandex (30% cooling polyester)

First side 102 for scheme 1

Fig. 3A-bar 1: 2-2/0-0(50D/72F polyester) -absorbent yarn

Fig. 3B-bar 2: 2-2/0-0(50D/72F polyester) -absorbent yarn

Fig. 3C-bar 3: 1-0/2-3(50D/72F temperature lowering polyester) -temperature lowering yarns such as askin

Fig. 3D-bar 4: 0-0/2-2(70D spandex) -elastic yarn

Second side 106 for embodiment 1

Fig. 4A-bar 1: 1-0/1-2(50D/72F polyester) -absorbent yarn

Fig. 4B-bar 2: 1-0/1-2(50D/72F polyester) -absorbent yarn

Fig. 4C-bar 3: 2-1/1-2(50D/72F Cooling polyester) -Cooling yarns such as ASKIN

Fig. 4D-bar 4: 1-2/1-0(70D spandex) -elastic yarn

Bar 1 for case 1 preferably uses a 50 denier/72 filament draw textured polyester yarn. Bar 2 for case 1 preferably uses a 50 denier/72 filament draw textured polyester yarn. Bar 3 for case 1 preferably uses a 50 denier/72 filament draw textured full dull cool down polyester yarn. The bar 4 used in scheme 1 preferably uses 70 denier spandex yarn (or equivalent elastic yarn).

Preferably, the dual function textile produced according to option 1 has a course count on second side 106 of 50 to 56 courses/inch and a wale count of 33 to 39 wales/inch.

In addition to the structure detailed above for solution 1, described below are various stitch structures for alternative embodiments of dual function textile 100:

scheme 2-warp knitting interval-polyester/nylon/spandex blend-60% polyester, 30% nylon, 10% spandex (30% cooling nylon)

First side 102 for scheme 2

Guide bar 1: 2-2/0-0(50D/72F polyester) -absorbent yarn

Guide bar 2: 2-2/0-0(50D/72F polyester) -absorbent yarn

Guide bar 3: 1-0/2-3(50D Cooling Nylon) -Cooling yarns such as aqua-x

Guide bar 4: 0-0/2-2(70D spandex) -elastic yarn

Second side 106 for embodiment 2

Guide bar 1: 1-0/1-2(50D/72F polyester) -absorbent yarn

Guide bar 2: 1-0/1-2(50D/72F polyester) -absorbent yarn

Guide bar 3: 2-1/1-2(50D Cooling Nylon) -Cooling yarns such as aqua-x

Guide bar 4: 1-2/1-0(70D spandex) -elastic yarn

Bar 1 for case 2 preferably uses a 50 denier/72 filament draw textured polyester yarn. Bar 2 for case 2 preferably uses a 50 denier/72 filament draw textured polyester yarn. Bar 3 for case 2 preferably uses a 50 denier/72 filament draw textured full dull reduced temperature nylon yarn. The bar 4 for scheme 2 preferably uses 70 denier spandex yarn (or equivalent elastic yarn).

Scheme 3-warp-knit spacing-90% polyester + 10% spandex (90% cooling polyester)

First side 102 for scheme 3

Guide bar 1: 2-2/0-0(50D/72F temperature-lowering polyester) -temperature-lowering yarns, e.g. askin

Guide bar 2: 2-2/0-0(50D/72F temperature-lowering polyester) -temperature-lowering yarns, e.g. askin

Guide bar 3: 1-0/2-3(50D/72F temperature lowering polyester) -temperature lowering yarns such as askin

Guide bar 4: 0-0/2-2(70D spandex) -elastic yarn

Second side 106 for embodiment 3

Guide bar 1: 1-0/1-2(50D/72F temperature lowering polyester) -temperature lowering yarns such as askin

Guide bar 2: 1-0/1-2(50D/72F temperature lowering polyester) -temperature lowering yarns such as askin

Guide bar 3: 2-1/1-2(50D/72F Cooling polyester) -Cooling yarns such as ASKIN

Guide bar 4: 1-2/1-0(70D spandex) -elastic yarn

Bar 1 to 3 for case 3 preferably use a draw textured full dull reduced temperature polyester yarn of 50 denier/72 filaments. The bar 4 used in scheme 3 preferably uses 70 denier spandex (or equivalent elastic yarn).

Scheme 4-warp knitting interval-90% polyester/nylon + 10% spandex

First side 102 for scheme 4

Guide bar 1: 2-2/0-0 (absorbing and/or cooling yarn)

Guide bar 2: 2-2/0-0 (absorbing and/or cooling yarn)

Guide bar 3: 1-0/2-3 (absorbing and/or cooling yarn)

Guide bar 4: 0-0/2-2 (elastic yarn)

Second side 106 for embodiment 4

Guide bar 1: 1-0/1-2 (absorbing and/or cooling yarn)

Guide bar 2: 1-0/1-2 (absorbing and/or cooling yarn)

Guide bar 3: 2-1/1-2 (absorbing and/or cooling yarn)

Guide bar 4: 1-2/1-0 (elastic yarn)

As can be seen from schemes 1 through 4 above, the four bar warp knit spacer structure used to produce dual function textile 100 generally includes an absorbent yarn on bars 1 and 2, a cooling yarn on bar 3, and an elastic yarn on bar 4. This ensures that the absorbent yarn forms loops on the first side 102 that absorb moisture from the skin surface 104. In addition, the temperature reducing yarn on bar 3 aids in wicking and evaporation of moisture from the absorbent yarn. Finally, the use of an elastic yarn (e.g., spandex) on bar 4 ensures that bi-functional textile 100 has both drape and stretch properties.

Additional Performance yarns

In some embodiments, other performance yarns may be used in dual function textile 100. Specifically, for the yarns listed in bars 1 through 4 in schemes 1 through 4, other evaporated yarns having additional performance characteristics may be added, blended, twisted with the evaporated yarn (e.g., 50D/72F cooling polyester) to enhance the cooling effect. These yarns may be, but are not limited to, the following:

mineral-containing yarns-mineral-embedded yarns containing mica, jade, coconut shell, volcanic ash, graphene, etc. may be added to provide a cool touch and enhanced evaporation performance. The mineral yarn has a larger surface area due to the exposed particles, which provides increased evaporation capacity. Examples of this type of yarn are 37.5 polyester and 37.5 nylon.

Absorbent yarn-highly absorbent yarns may be used, such as bicomponent synthetic yarns, optionally modified cross-section synthetic yarns, cellulosic and non-cellulosic blended yarns. This may include both filaments and spun yarns and yarn combinations thereof.

Phase change yarns-phase change yarns such as "Outlast" polyester and "Outlast" nylon, cellulosic and non-cellulosic blend fibers may be added to the present invention to provide increased cool down capability and cool down feel.

Denier per filament range of the performance-added yarn:

O-Bar 1 to 3-absorbing or Cooling polyester yarn or Nylon yarn

■ denier in the range-10 denier to 200 denier

■ filament in the range of-10 to 400 filaments

O-Bar 4-elastic yarn (Spandex or other elastic yarn)

■ denier in the range of-10 denier to 340 denier

Details of the absorption yarn (guide bars 1 and 2)

A description of the various absorbent yarns that may be used to produce dual function textile 100 is provided below. These absorbing yarns are used to create loops on first side 102 of dual function textile 100 that absorb moisture from skin surface 104. As already described, the absorbent yarns also help to retain moisture in the dual function fabric 100 when wetted, which helps to reduce temperature.

The first type of absorbent yarn is a micro filament (Microdenier). Specifically, a micro-filament is a yarn that measures less than one (1) denier per filament (dpf). An example of a fine filament is a 50 denier per 72 filament, where the denier (50) divided by the filament (72) is less than 1. Furthermore, multifilament yarns comprising a denier to filament ratio of 1.2dpf or less may also be used in the present invention. During construction of the bi-functional textile 100, micro-fine filaments may be used on any of the guide bars 1 to 3.

Conjugated (Conjugate) yarns (high absorbency bicomponent polyester/nylon) yarns may also be preferably used for bars 1 through 3 to impart additional absorbency characteristics to the present invention. The conjugate yarns undergo a dyeing process that dissolves the binder and splits the yarns, thereby creating a pie-shaped cross-section. This cross section allows for greater moisture retention than typical synthetic fibers.

The Nanofront synthetic yarn technology produced by Teijin may also be preferably used for bars 1 to 3 to impart additional absorption properties to bi-functional textile 100. Using this technique can have a thickness of 700 nm (which is 1/7,500 for human hair thickness)^th) Fiber diameter of (2). Such yarns are currently based on polyester.

The ava yarn technology produced by Eastman is a fiber that can provide additional moisture management and absorption properties and can be used for bars 1 through 3.

Preferably, all of the absorbent yarns (bars 1-3) used in bi-functional textile 100 have the following characteristics. First, the absorbent yarn provides wicking and moisture management properties to accelerate evaporation through its ability to move moisture from the first side 102 to the second side 106.

In addition, these yarns may provide a "cool touch". The cool feel was tested by the Q-max test. Preferably, the Q-max of the dual function fabric 100 on the second side 106 is greater than 0.130W/cm²(which indicates the cool touch effect of polyester based products based on the normal industry standard for cool touch requirements). Preferably, the second side 106 has a Q-Max (case 1-0.442W/cm) when wetted²) Is Q-Max (case 1-0.163W/cm) of the second side 106 when dry²) At least twice as large. Further, the Q-Max (case 1-0.442W/cm) of the second side 106 when wetted²) Is the Q-Max (case 1-0.157W/cm) of the first side 102 when wetted²) At least twice as large.

The absorbent yarn also provides rapid moisture absorption, allowing moisture to soak into the fabric within 3 seconds when tested according to AATCC 79.

Cooling yarn details (guide bars 1 to 3)

The cooling yarn is synthetic yarn with water absorption core. Temperature reducing evaporative yarns such as askin and Mipan aqua-X have modified cross-sections that provide fast absorption, fast drying, and capillary wicking to dual function textile 100. These temperature reducing fibers have embedded minerals or particles, such as mica, titanium dioxide, or jade, which results in a Q-max of 0.130 or greater for the dual function textile 100 on the second face 106. In addition, the modified cross-sectional temperature-reducing evaporated yarn increases opacity and UV protection. Therefore, the use of these yarns enables greater evaporative cooling than typical polyesters.

Elastic yarn details (guide bar 4)

As already described, in the embodiment of dual function textile 100, bar 4 preferably uses an elastic yarn. The elastic yarns provide functional stretch and recovery properties. In particular, elastomers are used in the fabric to prevent excessive growth. In particular, dual function textile 100 preferably includes 10% or less spandex yarns such that the elastomer will help retain 10% growth or less after 60 seconds when tested according to ASTM D2594.

Additional benefits of dual function textile 100

In use, bi-functional textile 100 may have a temperature decrease of 30 degrees below the average core body temperature (98.6F) when activated by wetting. In addition, dual function textile 100 has a conductive cooling capacity (in W/m) of over 60% when compared to current microfiber (microfiber) cooling towels²Measured) and an increase in conductive cooling capacity of over 50% relative to PVA and cotton towels.

Depending on the external humidity/temperature, dual function textile 100 has a cool down duration of more than 11.0 hours. This is supported by independent studies in a controlled laboratory environment. The report confirms that dual function textile 100 remains more than 50% wet for 11.1 hours, which means that dual function textile 100 can hold water inside the towels for a longer period of time, resulting in a longer evaporative cooling than conventional microfiber cooling textiles.

The percentage moisture absorption of the bi-functional textile 100 also exceeds four times its weight, which is significantly higher than the traditional microfiber cooling textile solutions on the market. When placed against the skin, dual function textile 100 also has an absorbent capacity from first side 102 and a cool touch on the opposite side (second side 106).

Additional tests have demonstrated that one embodiment of the bi-functional textile 100 has a percent moisture pick-up (WPU%) of 489% or 4.9 times the weight of the fabric. Further, the WPU% tested on an alternative embodiment of the textile was 532% or 5.3 times the weight of the fabric. This is an increase over conventional microfiber cooling towels (which in the past reached 157% WPU% or a maximum of 1.57 times the weight of the fabric).

The combination of yarns on the loop absorbing side (first side 102) plus the evaporative yarns used in the cooling side (second side 106) in dual function textile 100 results in a higher conductive cooling capacity (in watts/m) than both polyvinyl alcohol (PVA) and 100% woven cotton towels²Measured by a meter). Specifically, two independent test reports show that the dual function textile 100 described herein each produced 23,483 watts/m²(embodiment 415g/m of embodiment 4²) And 22,709 watts/m²(embodiment 395g/m of scheme 1²) Whereas PVA and cotton towels produced only 15,011 watts/m, respectively²And 14,967 watts/m². Thus, this shows that the bi-functional textile 100 of the present invention produces about 56% to 51% more watts of cooling energy than both PVA and cotton towels as measured by Vartest Laboratories Using the modified ASTM F1868 Method entitled "Standard Test Method for Thermal and Evaporative Resistance of closing Materials Using a bathing Hot Plate".

Dual function textile 100 may also be treated with antimicrobial chemicals or special yarns added to inhibit microbial growth, thereby making it reusable without smelling. No chemicals need to be added to dual function textile 100 to impart cooling capabilities. Further, dual function textile 100 manufactured according to any of the described embodiments is softly dry, reusable and machine washable.

Finishing operations

In addition to the normal textile finishing operations, one embodiment of the present invention includes applying additional finishing operations before or after the construction of dual function absorption and cooling textile 100 that impart increased cooling capacity, duration, temperature, and other cooling performance characteristics when dual function absorption and cooling textile 100 is activated by wetting. Examples of additional finishing operations suitable for dual function absorbing and cooling textile 100 are provided below. A combination of the following methods may also be employed.

Brushing-brushing using methods such as needle brushing or less pronounced ceramic paper brushing provides a pile height to the cooling fabric. The pile height provides an aesthetically softer hand and increased absorbency. In addition, the increased surface area for water evaporation helps to speed up the evaporation. A schematic view of a needle type brushing machine is depicted in fig. 6. As shown, one side (side 106) of dual function absorbing and cooling textile 100 is fed to a needle punch 602, which needle punch 602 rotates in a direction opposite to the direction in which dual function absorbing and cooling textile 100 is fed. As dual function absorbing and cooling textile 100 passes over needles 604, the needles slowly brush the surface of second side 106, leaving the back side intact. In some embodiments, dual function textile 100 may be brushed on both sides.

Embossing-embossing produces reorientation of the fibres on the surface of the fabric. The finishing process is used to increase the surface area by flattening the yarn surface. This increased surface area allows for a higher evaporation rate, resulting in additional temperature reduction characteristics and a higher level of evaporation. A diagram of an embosser and embossing process is depicted in fig. 7. Here, dual function absorbing and cooling textile 100 is fed between heated roller 702 and non-heated roller 704. The surface of heated roll 702 typically includes the pattern to be present on the final embossed fabric (second side 106). In other embodiments, if both sides of dual function absorbing and cooling textile 100 are embossed, the fabric may be turned over.

Brushed plus embossed-the use of a combination of brushed and embossed can impart increased cooling characteristics to a cooling fabric. The performance benefits of both brushing and embossing are described above. A sample of a textured dual function textile 100 that is both brushed and embossed is depicted in fig. 8.

Chemical renewal

Chemicals may also be used to impart increased cooling capacity, duration, and lower temperature to the wet activated dual function absorbing and cooling textile 100. The following is a summary of additional finishing operations. Combinations of these methods may also be used for bi-functional textile 100.

Cooling printing-printing chemicals using conventional and non-conventional printing techniques can be used to add hydrophobic, hydrophilic, phase change, mineral (particle) and like chemicals to the surface of cooling textile 100. These chemicals impart increased cooling capacity, duration and lower temperature when activated by wetting.

Cooling gel-proprietary compositions and cooling gels printed or coated on the dual function textile 100 can impart increased cooling properties to the dual function textile 100.

Cooling finish-cooling chemicals such as xylitol, erythritol, and other cooling finishes can be added to dual function absorbent and dual function textile 100 to impart increased cooling characteristics to dual function textile 100 (when it is activated by being wetted, and then in the dry state).

Fabric structure&Yarn position

Circular knit spacers-similar layering effects depicted in figure 1 can also be achieved using circular knit spacers. Circular knit spacers have an increased ability to insert additional yarns (e.g., monofilament yarns) to provide increased thickness to the material. This increased thickness produced by yarns such as monofilament yarns may be replaced with conjugated yarns or intermittently combined with conjugated yarns, while the outer yarns used may be high evaporation yarns or any of the previously described yarns.

Flat bed knitting-similar layering effects depicted in fig. 1 can also be achieved using flat knitting machines. Flat knitting machines are very flexible, allowing for complex stitch design, forming knitting and precise width adjustment. The two largest manufacturers of industrial flat knitting machines are Stoll in germany and Shima Seiki in japan.

The present invention has been described with respect to several examples. Nevertheless, it will be understood that various modifications may be made without departing from the spirit and scope of the invention as described in the following claims.