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Coating composition for blister coated whiteboard with white back, and preparation process of coating composition

A technology of white board and composition, applied in paper coating, paper, papermaking and other directions, can solve the problems of low bonding strength, poor ink absorption, poor air permeability, etc., and achieve the effects of good ink absorption, good air permeability and cost reduction

Inactive Publication Date: 2015-09-23
DONGGUAN NINE DRAGONS PAPER IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a kind of coating composition and Its preparation method, blister coated white cardboard can have good blister performance and achieve better printing effect

Method used

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  • Coating composition for blister coated whiteboard with white back, and preparation process of coating composition
  • Coating composition for blister coated whiteboard with white back, and preparation process of coating composition
  • Coating composition for blister coated whiteboard with white back, and preparation process of coating composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] A coating composition for blister coating white paperboard: It includes four coating coatings, namely front pre-coating, front top coating, back pre-coating and back top coating. The coating formulations for each layer are as follows:

[0041]

[0042] Among them, the glass transition temperature of styrene butadiene latex is 25°C.

[0043] The coating starch is added to the back coating to replace part of the latex as the adhesive of the coating coating, which can reduce the cost and meet the technical index requirements of the coating coating.

[0044] The price of SD65 ground calcium carbonate is relatively low, and its grinding process is relatively mature, which can achieve the same technical effect.

[0045] The prepared front pre-coating paint has a viscosity of 870cP / 25℃, a solid content of 66.8%, and a pH of 8.67;

[0046] Coating on the front surface, viscosity is 660cP / 25℃, solid content is 65.2%, pH is 8.68;

[0047] Pre-coated paint on the back, viscosity is 880cP / 25℃...

Embodiment 2

[0051] A coating composition for blister coating white paper board: includes four coating coatings, which are front precoating, front top coating, back precoating and back top coating.

[0052]

[0053] The glass transition temperature of styrene-butadiene latex is 25°C.

[0054] The prepared front pre-coated paint has a viscosity of 860cP / 25℃, a solid content of 66.7%, and a pH of 8.73;

[0055] Paint on the front surface, viscosity is 670cP / 25℃, solid content is 65.8%, pH is 8.62;

[0056] Pre-coated paint on the back, viscosity is 880cP / 25℃, solid content is 66.1%, pH is 8.69;

[0057] Paint on the back surface, viscosity is 890cP / 25℃, solid content is 67.2%, pH is 8.76.

[0058] After four-layer coating, the whiteness of the blister white paper is ≥80, the gloss is ≥87, the roughness is ≤1.8μm, the ink absorption is 23±3%, and the surface strength is ≥0.9m / s.

Embodiment 3

[0060] A coating composition for blister coating white paperboard: It includes four coating coatings, namely front pre-coating, front top coating, back pre-coating and back top coating. The coating formulations for each layer are as follows:

[0061]

[0062] Among them, the glass transition temperature of styrene-butadiene latex is 30°C.

[0063] The prepared front pre-coating paint has a viscosity of 870cP / 25℃, a solid content of 66.8%, and a pH of 8.65;

[0064] Coating on the front surface, viscosity is 640cP / 25℃, solid content is 65.6%, pH is 8.68;

[0065] Pre-coated paint on the back, viscosity is 890cP / 25℃, solid content is 66.3%, pH is 8.60;

[0066] The back surface is coated with paint, the viscosity is 940cP / 25℃, the solid content is 66.1%, and the pH is 8.66.

[0067] After four-layer coating, the whiteness of the blister white paper is ≥80, the gloss is ≥87, the roughness is ≤1.8μm, the ink absorption is 23±3%, and the surface strength is ≥0.9m / s.

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Abstract

The invention discloses a coating composition for a blister coated whiteboard with a white back, and a preparation process of the coating composition. The coating composition comprises four coatings namely a front pre-coating, a front top-coating, a back pre-coating and a back top-coating, wherein components of the four coatings include calcium carbonate, kaolin, latex, sodium hydroxide, an antifoaming agent, a dispersing agent, a bactericide, a rheological modifier, a lubricant and the like in different percentages by weight; the corresponding positions of the whiteboard are coated with the four coatings, so that the prepared blister whiteboard is lower in cost and high in air permeability, the interlayer bonding strength of coating layers is high, the permeability of the coating layers is high, and the blister effect is good.

Description

technical field [0001] The present invention relates to the technical field of coating white paperboard coatings, in particular to a coating composition and a preparation process for blister-coating white-bottomed white paperboards. Background technique [0002] At present, blister packaging technology is widely used in the packaging of electronic products, hardware, toys, stationery, etc., and has broad market prospects. Blister-coated white board paper is a very important variety of blister packaging materials, with the characteristics of beauty, practicality and firmness. Due to the immature technology of domestic production enterprises, the quality of blister-coated white paperboard produced is unstable. It is an important direction to improve the quality of blister-coated white board to improve the formula and process of coating paint used in coated white board paper. [0003] Domestic general coatings have the characteristics of improving the whiteness, glossiness, a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H21/28D21H19/38D21H19/40
Inventor 刘名中胡广坡张成飞
Owner DONGGUAN NINE DRAGONS PAPER IND
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