Coating white cardboard for laser code burning processing and production process of coating white cardboard

A white cardboard and coating technology, which is applied in papermaking, coating, paper coating, etc., can solve the problem of different application fields of ordinary coated white cardboard, the production and processing methods without special treatment, and the digital information effect on the paper surface is not clear and other issues, to achieve the effect of ensuring the ease of processing, ensuring sustainability and safety, and reducing the risk of smoke and fire

Active Publication Date: 2012-06-27
ZHUHAI HUAFENG PAPER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Ordinary coated white cardboard cannot be used for laser burning code processing due to its different application fields, coating formula, production and processing methods without special treatment
When ordinary coated white cardboard is processed by laser coding, there are often problems with unclear digital information on the paper surface, smoke, sparks or even fire on the paper surface, which seriously reduces processing efficiency or production capacity, and poses serious production safety hazards.

Method used

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  • Coating white cardboard for laser code burning processing and production process of coating white cardboard
  • Coating white cardboard for laser code burning processing and production process of coating white cardboard

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A coated white cardboard that can be used for laser burning code processing, wherein the pigment weight ratio of the top coat is ground calcium carbonate: China clay = 95:5, and the pigments of the pre-coat, core coat and back coat It is 100% ground calcium carbonate, and the moisture content of the coated paper is 7.0-7.5%, and the Cobb value of the front is 40g / m 2 , the PPS roughness is 1.1 μm.

[0034] The index of heavy calcium carbonate used in the top coat is: the content of particle size less than 5 μm is 100%, the content of particle size less than 1 μm is 85%, and the content of particle size less than 2 μm is 96%.

[0035] The index of porcelain clay used in the top coat is: the particle size is less than 2μm and the content is 100%.

[0036] The index of ground calcium carbonate used in the pre-coat, core coat and back coat is: the content of particle size less than 5 μm is 100%, and the content of particle size less than 2 μm is 55%.

[0037] The above-me...

Embodiment 2

[0043] A coated white cardboard that can be used for laser burning code processing, wherein the pigment ratio of the top coat is 100% ground calcium carbonate, and the pigments of the precoat, core coat and back coat are 100% heavy Calcium carbonate, and the moisture content of the coated paper is 6.5-7.5%, and the Cobb value of the front is 32 g / m 2 , the PPS roughness is 1.0 μm.

[0044] The index of heavy calcium carbonate used in the top coat is: the content of particle size less than 5 μm is 100%, the content of less than 1 μm is 82%, and the content of particle size less than 2 μm is 98.4%.

[0045] The index of ground calcium carbonate used in the pre-coat, core coat and back coat is: the content of particle size less than 5 μm is 100%, and the content of particle size less than 2 μm is 55%.

[0046] The above-mentioned coated white cardboard production method that can be used for laser burning code processing has the same steps as above, and the parameters used in eac...

Embodiment 3

[0052] A coated white cardboard that can be used for laser burning code processing, wherein the pigment weight ratio of the top coat is ground calcium carbonate: China clay = 97:3, and the pigments of the pre-coat, core coat and back coat It is 100% ground calcium carbonate, and the moisture content of the coated paper is 6.5-7.0%, and the Cobb value of the front is 38g / m 2 , the PPS roughness is 0.8 μm.

[0053] The index of heavy calcium carbonate used in the top coat is: the content of particle size less than 5 μm is 100%, the content of particle size less than 1 μm is 80%, and the content of particle size less than 2 μm is 99%.

[0054] The indicators of porcelain clay used in the top coat are: the content of particle size less than 5 μm is 100%, and the content of particle size less than 2 μm is 95%.

[0055] The index of ground calcium carbonate used in the precoat, core coat and back coat is: the content of particle size less than 5 μm is 100%, and the content of parti...

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PUM

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Abstract

The invention discloses a coating white cardboard for laser code burning processing and a production process of the coating white cardboard. The pigment of the coating white cardboard comprises ground calcium carbonate and kaolin with the weight percentage being (95-100):(0-5); pigments of a pre-coating, a core coating and a surface coating are ground calcium carbonate; the water content of the coating white cardboard is 6.5-7.5 percent; the front-side Cobb value is smaller than 50g / m<2>; and the PPS (Polyphenylene Sulfite) roughness is 0.8-1.1mum. In the production process of the coating white cardboard disclosed by the invention, the coating weight is required to be controlled, the calendaring press and temperature are required to be adjusted and the temperature of take-up paper web is required to be controlled. According to the coating white cardboard and the production method thereof disclosed by the invention, a coating formula is changed; special mixture ratio of chemical raw materials is adopted to optimize coating indexes and process conditions; the coating white cardboard for the laser code burning processing can be obtained; the required distinct digital information is obtained by carrying out laser processing on the coating white cardboard; and fuming, sparking or firing can be avoided; and the sustainability and the safety in the process of laser code burning are ensured.

Description

technical field [0001] The invention belongs to the field of coated white cardboard production, and relates to a coated white cardboard that can be used for laser burning code processing and a production process thereof. Background technique [0002] Laser burning code processing is a method of digital information processing on coated paper or cardboard by optical means such as laser. This processing method is widely used in the post-printing processing of various high-end products at home and abroad. [0003] Ordinary coated white cardboard cannot be used for laser burning processing because of its different application fields, coating formula, production and processing methods without special treatment. When ordinary coated white cardboard is processed by laser coding, there are often problems with unclear digital information on the paper, smoke, sparks or even fire on the paper, which seriously reduces processing efficiency or production capacity, and poses serious produc...

Claims

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Application Information

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IPC IPC(8): D21H19/82D21H19/84D21H19/38D21H19/40
Inventor黄欣仇如全陈卫东孙世琼刘智维刘向前
OwnerZHUHAI HUAFENG PAPER