Integrated fluidic flow network for fluid management

Inactive Publication Date: 2017-03-16
RGT UNIV OF CALIFORNIA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0013]Another example fabric utilizes a 3D knitting structure (X-bionic®) to create a curved structure of the fabric to reduce the contact area of the fabric and improve the gas flow. However, t

Problems solved by technology

Without efficient sweat removal during intensive activity, accumulated sweat can drastically increase the humidity level surrounding the skin, resulting in a very uncomfortable feeling.
However, serious problems exist in this wicking-evaporation moisture removal mode.
This saturated fabric can result in an uncomfortable feeling on skin.
This mechanism works satisfactorily with small amounts of perspiration but performs poorly when the wearer perspires heavily.
When the wearer rapidly perspires, the whole garment becomes equally wet, heavy, sticky and uncomfortable, even on the regions of the body where the garment barely touches the skin.
Moreover, the regions of the body that rarely touch the fabric can experience an unpleasant chill due to the evaporation of the

Method used

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  • Integrated fluidic flow network for fluid management
  • Integrated fluidic flow network for fluid management
  • Integrated fluidic flow network for fluid management

Examples

Experimental program
Comparison scheme
Effect test

embodiment 700

[0123]FIG. 7A through FIG. 7C are diagrams that illustrate an embodiment 700 in which the inner surface layer of the material 106, shown in FIG. 7A, has more liquid-repellent region 104 area coverage than the outer surface layer of the material, shown in FIG. 7C. The inner surface layer (in contact with the liquid-producing surface) of the material has a discontinuous liquid-absorptive region 102 in a pattern 702 made up of small circles (or any other shape). These liquid-absorptive regions 102 on the inner surface of the material are connected through liquid-absorptive paths 704 to the outer layer liquid-absorptive channels 118 of the material, as shown in the cross-section view in FIG. 7B. The liquid-absorptive regions 102 forming the pattern 702 on the inner surface layer of the material serve as small inlets that suck moisture to the outer siphon networks (liquid-absorptive channels 118). The moisture removal rate of this structure from an inner surface layer to an outer layer i...

embodiment 800

[0125]In the embodiment 800 shown in FIG. 8A through FIG. 8C, the inner layer of the material, shown in FIG. 8A, has 5 mm liquid-absorptive circles 802 with a 5 mm space between each circle 802. The uniformly distributed liquid-absorptive pattern ensures an efficient capture of moisture. The liquid-absorptive circles penetrate through the material substrate and connect to the outer layer of the material which has a fluidic channel network design that connects the entire liquid-absorptive circle pattern on the inner layer of the material. The channel design uses a minimum number of channels 118 to connect all of the liquid-absorptive circles so that the overall wet area on the material is minimized. The outside layer channel patterns are also designed so that they can be repeated over the entire material substrate. FIG. 8B shows a cross-sectional view of the design. FIG. 8C shows the outer surface of the material. The outer layer channels 118 are mainly vertical (5.5 mm in width and ...

embodiment 1100

[0129]Similarly, the diagrams in FIG. 11A through FIG. 11C show an embodiment 1100 in which the outer surface layer (FIG. 11C) of the fluidic channel network pattern is completely covered by a liquid-repellent coating, as shown in the cross-sectional view in FIG. 11B. The inner surface layer of the pattern can remain constant from the top of the material to the dripping point 108 as shown here or can resemble any of the embodiments previously shown or any other patterns suited for a particular need. This provides a region where moisture can contact the channel 118 and flow inside the material but is not visible from the outside of the material, as shown in FIG. 11C. This embodiment can be particularly useful when made into a compression garment, which will generate contact pressure that pushes the moisture towards the liquid-absorptive region 102 patterns. The accumulated moisture can be kept or transported away by the liquid-absorptive channel 118 structure. Furthermore, this embod...

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Abstract

An apparatus and method is presented for the management of fluid flow utilizing different adjacent wettability regions to form a fluidic network structure on a substrate. The fluidic network structure may include liquid-absorptive fluidic channels, where the fluid can flow within these channels and be removed from the substrate. Fluid can be moved by gravitational force, compression force, capillary force and surface tension force.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application is a 35 U.S.C. §111(a) continuation of PCT international application number PCT / US2015 / 021889 filed on Mar. 20, 2015, incorporated herein by reference in its entirety, which claims priority to, and the benefit of, U.S. provisional patent application Ser. No. 61 / 969,040 filed on Mar. 21, 2014, incorporated herein by reference in its entirety. Priority is claimed to each of the foregoing applications.[0002]The above-referenced PCT international application was published as PCT International Publication No. WO 2015 / 143411 on Sep. 24, 2015, which publication is incorporated herein by reference in its entirety.STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT[0003]Not ApplicableINCORPORATION-BY-REFERENCE OF COMPUTER PROGRAM APPENDIX[0004]Not ApplicableNOTICE OF MATERIAL SUBJECT TO COPYRIGHT PROTECTION[0005]Not ApplicableBACKGROUND[0006]1. Technical Field[0007]The technology of this disclosure pertains generally t...

Claims

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Application Information

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IPC IPC(8): A41D13/00A41B1/08
CPCA41D13/0015A41D2400/60A41B2400/60A41B1/08A41D31/125A41D27/28D06M15/244D06M13/02D06M2200/10
Inventor PAN, TINGRUIXING, SIYUAN
Owner RGT UNIV OF CALIFORNIA
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