Reversible temperature-sensitive cigarette packing paper preparation method

A technology for wrapping paper and cigarettes. It is applied in the fields of cigarette boxes, tipping paper printing, and cigarette paper. It can solve problems such as lattice structure discoloration and achieve the effect of enhancing safety.

Active Publication Date: 2013-08-07
HUBEI CHINA TOBACCO IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] (1) Changes in lattice

Method used

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  • Reversible temperature-sensitive cigarette packing paper preparation method
  • Reversible temperature-sensitive cigarette packing paper preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Such as figure 1 As shown, the steps of the preparation method of the reversible temperature-sensitive cigarette wrapping paper of the present invention are as follows:

[0034] (1) Choose color-changing pigments of inorganic reversible heat-sensitive materials, organic reversible heat-sensitive color-changing compounds, dye leuco color-changing systems, cholesteric liquid crystals, polysilanes or polythiophenes, and use solid-phase methods and liquid-phase methods , Prepared by magnetron sputtering method, chemical vapor deposition method or sol-gel method to obtain a thermochromic core material;

[0035] Among them, the color-changing pigments of inorganic reversible heat-sensitive materials are iodides, complexes, and double salts containing Ag, Cu, and Hg; or compounds formed by copper salts, cobalt salts, and nickel salts hexamethylenetetramine; or metal Solid solution of oxide Cr2O3 in α-Al2O3 / Ga / Ga-La / Y-Al; or vanadate, chromate, tungstate, in which the metal io...

Embodiment 2

[0043] Such as figure 1 The method shown in Example 1 is repeated, and the thermochromic core material is synthesized according to the method described in the above step 1, and then the emulsion is dispersed, and then mixed with the polymer prepolymer shell material at a ratio of 90%, and the microcapsule is carried out. Chemical reaction, after cooling, washing, and drying, temperature-sensitive color-changing microcapsules are obtained; mixed with printing ink in a ratio of 85%, adopting the method described in the above step 4, printing on cigarette wrapping paper, and drying. The thermochromic core material accounts for 20% of the total mass of the thermochromic microcapsules.

Embodiment 3

[0045] Such as figure 1 The method shown in Example 1 is repeated, and the thermochromic core material is synthesized according to the method described in the above step 1, and then the emulsion is dispersed, and then mixed with the polymer prepolymer shell material at a ratio of 70%, and the microcapsule is carried out. Chemical reaction, after cooling, washing, and drying, the temperature-sensitive color-changing microcapsules are obtained; they are mixed with printing ink in a 50% ratio, and the method described in the above step 4 is used to print on cigarette wrapping paper and dry in the air. The thermochromic core material accounts for 95% of the total mass of the thermochromic microcapsules.

[0046] Such as figure 2 As shown, the schematic diagram of the cigarette structure printed with the reversible thermochromic paint wrapped in microcapsules. The surface of cigarette wrapping paper is coated with microencapsulated temperature-sensitive color-changing dyes, whic...

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Abstract

The invention discloses a reversible temperature-sensitive cigarette packing paper preparation method comprising the steps that: (1) a temperature-sensitive color-change core material is prepared by using a color-change pigment with a reversible temperature-sensitive material; (2) the temperature-sensitive color-change core material is subjected to emulsification dispersion in a W/O dispersion emulsion; (2) the emulsified temperature-sensitive color-change core material is mixed with a high-molecular prepolymer shell material, and a microencapsulation reaction is carried out, such that temperature-sensitive color-change microcapsules are prepared; and (4) the obtained temperature-sensitive color-change microcapsules are diluted and are blended into printing ink; printing is carried out upon cigarette packaging paper, and the packaging paper is air-dried. According to the invention, with a high-molecular coating technology, the color-change core material is separated from the outside through the high-molecular shell material, such that paint color, shape, weight, volume, solubility, reactivity, durability, pressure-sensitivity, heat-sensitivity, photosensitivity, and the like can be freely adjusted, and dye safety is greatly enhanced.

Description

technical field [0001] The invention relates to the technical field of cigarette case, cigarette paper and tipping paper printing, in particular to a method for preparing reversible temperature-sensitive cigarette wrapping paper. Background technique [0002] The known reversible temperature-sensitive color-changing materials are easily disturbed by the external environment, such as cobalt chloride hexahydrate slowly loses water in humid air, resulting in discoloration failure, crystal violet lactone maintains an open ring state under acidic conditions and cannot reversibly change color, etc. Wait. Synthetic microcapsule dyes have good water resistance, acid resistance, alkali resistance, soaping fastness, light resistance and fatigue resistance. Some organic thermochromic dyes are prone to chemical reactions with other dyes or varnishes in the ink, resulting in failure, which also limits the application of such materials in cigarette printing. In addition, it is not possi...

Claims

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Application Information

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IPC IPC(8): D21H27/10D21H19/38
Inventor 刘祥浩程占刚叶明樵陈义坤
Owner HUBEI CHINA TOBACCO IND
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