COLOR-GENERATING FILM HAVING RIDGED STRUCTURE, PRESSURE TEST FILM AND PREPARATION METHOD THEREFOR

WIPO Patent Application WO/2019/154148

A1

The present disclosure relates to a color-generating film and a pressure test film, the color-generating film comprising: a substrate on which other layers are coated so as to form the color-generating film; a ridged structure layer which is formed on the substrate; and a color-generating layer which is coated on the ridged structure layer and which comprises microcapsules, the microcapsules containing an electron-donating colorless dye precursor, and the electron-donating colorless dye contacting an electron-accepting compound and thus having a color; when the color-generating film is pressed, the ridged structure layer presses the color-generating layer such that the microcapsules in the color-generating layer rupture to release the electron-donating colorless dye precursor. The color-generating film reduces the size and concentrates the pressure-receiving area of the pressure test film and the actual pressure-receiving area of the microcapsules by means of the ridged structure layer, therefore even if a small pressure is applied to the pressure test film, the pressure test film may have high sensitivity.

CUI YE (CN)
RAN GUANGNIAN (CN)
LIU YAJUN (CN)

PCT/CN2019/073336

August 15, 2019

January 28, 2019

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BAODING LUCKY INNOVATIVE MAT CO LTD (CN)

C08J7/04; C08L67/02; C09D7/61; C09D101/28; C09D109/06; C09D129/04; C09D163/10; C09D175/14; C09D189/00; G01L1/02

CN108373548A	2018-08-07
CN106531733A	2017-03-22
CN102934056A	2013-02-13
CN107238462A	2017-10-10
US20040206190A1	2004-10-21

BEIJING JUNYOU INTELLECTUAL PROPERTY AGENCY (GENERAL PARTNERSHIP) (CN)

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