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Flexible material including controlled substance release

A technology of flexible materials and substances, applied in the field of controlled release, can solve problems such as unused release

Inactive Publication Date: 2007-06-06
KONINKLIJKE PHILIPS ELECTRONICS NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these fabrics are not designed to selectively control the release of substances from the fabric itself

Method used

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  • Flexible material including controlled substance release
  • Flexible material including controlled substance release
  • Flexible material including controlled substance release

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027] Figure 2 shows a cross-section of a flexible material comprising conductive fibers and microencapsulated substances. The flexible material comprises conductive fibers 23 made of a conductive material and woven into the textile fiber layer 20 . Both sides of the conductive fiber 23 are covered with a thermal insulation layer 22, which is used to prevent the microcapsule layers 21a and 21b from overheating or being heated too quickly. Layers 21a and 21b consist of microcapsules containing a substance such as perfume. When current passes through the conductive fibers 23, they act as resistors and emit a certain amount of heat. This heats the heat insulating layer 22 and the microcapsule layers 21a and 21b. When individual microcapsules are heated, the perfume they contain reaches its boiling point. When individual microcapsules reach their melting point, they rupture and release the vaporized perfume.

[0028] The insulating layer 22 can be selected to ensure that only...

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PUM

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Abstract

A flexible material allows for the controlled release of a microencapsulated substance. One element of the material is interwoven fibers. A second element is means for passing a current and generating localized heating interspersed among the fibers. A third element is at least one microcapsule, situated on or within the interwoven fibers and means for passing a current, containing a substance and releasing said substance upon rupture due to localized heating generated by selectively heating the means for passing a current. A fourth element is a means for controlling the current passed through the means for passing a current to enable controlled localized heating.

Description

technical field [0001] The present invention relates to wearable electronic devices and controlled release of substances. Background technique [0002] Microencapsulation involves the encapsulation of small amounts of substances such as perfumes within spheres of plastic, gelatin or polymers only a few microns in diameter. These spheres release material when they rupture. Fracture can be mechanical (such as scratching with a fingernail or peeling off the adhesive provided on either side of the sphere), chemical (such as by dissolving the sphere in a solvent thereby releasing the substance), or thermally (such as by using an external heat source This occurs by heating the sphere above its melting point where it begins to rupture). Various substances can be encapsulated in microcapsules. For example, these substances can be fragrances, dyes, lotions or oils. Substances can be preserved in microcapsules for up to several years. [0003] Traditionally, the use of microcapsu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M23/12D06M17/00B01J13/02C09J7/04A41D31/00A61K8/00A61K8/11A61Q15/00D06M13/00H05B3/34
CPCB32B2250/40A41D31/00H05B2203/017Y10T442/3976B32B5/024Y10T442/3846B32B2250/20B32B2255/02A41D1/002H05B2203/036B32B5/26B32B2437/00B32B2307/51B32B2307/758B32B5/08H05B3/347D06M2200/00A41D2400/36A61K8/11A61Q15/00B32B2459/00D06M13/005B32B2307/202A61K2800/83D06M23/12H05B2203/015A61K2800/412B01J13/02D06M17/00
Inventor G·马马罗波洛斯
Owner KONINKLIJKE PHILIPS ELECTRONICS NV