Transparent thermal sensitive recording material
A technology of heat-sensitive recording material and transparent substrate, applied in the direction of temperature recording method, etc., can solve the problems of consumer distrust, consumers cannot clearly see the color, pattern, shape, and large label area of food
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Embodiment 1
[0026] figure 1 It is a schematic diagram of the composition of the composite layer of the transparent thermosensitive recording material in Example 1 of the present invention.
[0027] Such as figure 1 As shown, a transparent thermosensitive recording material 100 includes a transparent base material 101 , an undercoat layer 102 , a thermochromic layer 103 and a protective layer 104 which are successively coated from bottom to top.
[0028] The transparent substrate 101 is any transparent polymer film material such as biaxially oriented polypropylene (BOPP), polyethylene terephthalate (PET), polyvinyl chloride (PVC), and polystyrene (PS). The transparency of the transparent substrate 101 is 95%-<100%, and the haze is <0%-3%. The shape, structure and size of the transparent substrate can be properly selected according to requirements. The shape of the base material can be a sheet, and the structure can be a single-layer or multi-layer composite structure; the size can be cu...
Embodiment 2
[0099] The following is the description of the second embodiment.
[0100] In the second embodiment, the same symbols are assigned to the same structures as those in the first embodiment, and the same descriptions are omitted.
[0101] figure 2 It is a schematic diagram of the composition of the composite layer of the transparent thermosensitive recording material in Example 2 of the present invention;
[0102] Such as figure 2 As shown, the transparent thermosensitive recording material 200 in the second embodiment includes a transparent base material 101 , a thermochromic layer 203 and a protective layer 104 which are sequentially formed by coating layer by layer from bottom to top.
[0103] In the second embodiment, the thermochromic layer 203 is covered on the transparent substrate 101 , and the thermochromic layer 203 at least includes a leuco dye and a color developer.
[0104] In addition, when the transparent base material 101 is a low-polarity material such as PP...
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