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Printable Heaters for Wearables and Other Articles

A technology of heaters and products, applied in the direction of printed circuit, printed circuit, ohmic resistance heating, etc.

Inactive Publication Date: 2019-09-17
EI DU PONT DE NEMOURS & CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, failure of the resistive material in a portion of any of these columns will eliminate the ability to heat the entire column

Method used

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  • Printable Heaters for Wearables and Other Articles
  • Printable Heaters for Wearables and Other Articles
  • Printable Heaters for Wearables and Other Articles

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0050] Has been fabricated and tested with an overall size of 240mm wide x 160mm high and has figure 1 and figure 2 The constructed rectangular heater. In the description of the examples, reference is made to the part numbers in those figures. Resistive Material Rectangular 11 Printed Carbon Paste DuPont TM 7102 (DuPont, Wilmington, Delaware) with a sheet resistivity of 22 ohms / square. Printed silver busbars and rows of silver are DuPont TM 5025 (DuPont, Wilmington, DE) with a sheet resistivity of 0.025 ohms / square. The substrate is polyethylene terephthalate (PET) with a thickness of 0.2 mm.

[0051] refer to figure 2 The size parameters of the resistance material rectangle, the width (14) of the resistance material rectangle is 4mm, and the effective length L of the resistance material rectangle 有效 (16) is 4mm. The width w (15) of the conductive rows is 3 mm and the spacing (13) between the resistive rectangles is 1 mm. The distance d(17) between the columns is 1 ...

example 2

[0055] Using the heater of Example 1, one of the carbon resistor rectangles towards the middle of the heater was intentionally damaged such that the rectangle became an open circuit. Heating tests were performed using a thermal imaging camera and it was found that the damaged rectangle was the only carbon resistance rectangle that did not heat up. All other carbon resistance rectangles, including those surrounding the damaged rectangle, heated normally. This shows the damage resistant nature of the heater of the present invention.

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Abstract

This invention provides improved printed heaters for use in articles such as wearable garments and seats. The improvement comprises replacing the single large area resistive material layer with columns of a number of small patches of resistive material or of continuous resistive material, i.e., replacing the single large area heater with a number of smaller individual heaters. A series of conductive strips across the columns render the heater more robust, less sensitive to local resistive area failure. Printing of the resistive material is facilitated since the area of each resistive material patch is greatly reduced. In addition, the embodiments enable the opportunity to provide a breathable heater.

Description

technical field [0001] The present invention relates to improved printable heaters for use in wearable clothing and other articles. Background technique [0002] There is growing interest in providing comfortable heated wearable clothing. Typical commercially available heated garments today are powered via resistive wires. These garments have the advantage that the areas between the filaments allow the fabric to breathe, but they have the disadvantage that the presence of the filaments makes the garment uncomfortable. [0003] An alternative is to use a heater with printed parts which will provide greater comfort. In one such version, part of the heater is a layer of resistive material (eg, carbon) that acts as a resistive heating element between two bus bars. Such layers can cover a large part of the garment. Printing large-area resistive material layers of appropriate thickness and uniformity is difficult using currently available compositions, and the resulting heater...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B3/34
CPCH05B3/342H05B2203/036H05B2203/013H05B2203/011H05B2203/017A41D13/0051H05K1/167H05K2201/0145H05K2201/0323H05K2201/09681H05K1/0201H05B2203/007H05K2201/09245
Inventor 高卫英M·梅迪扎德M·A·拉蒙蒂亚
Owner EI DU PONT DE NEMOURS & CO