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Novel producing process for coloured paper

A new technology, color paper technology, applied in the new technology field of color paper production, to achieve the effect of high gloss, saving usage, and eliminating mass production

Inactive Publication Date: 2006-08-23
SHANDONG BOHUI PAPER INDUSTRY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This technology also has the problem of the treatment of colored wastewater and the control of color difference

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Example 1 The amount of each slurry was selected according to the type of paper and the proportion of various slurries and added to the batching basin in turn, and then chemical additives such as brighteners were added, and after slag removal through a slag remover and a centrifugal screen The mixed slurry enters the high-level box, and the talc filler is added to the mixed slurry and then enters the mesh part for papermaking. The paper-made slurry mixture is pressed and dried, and its water content is reduced to less than 10%. The glue is used to sizing the wet paper after pressing and drying. The sizing agent is added with a dye prepared at the concentration of frozen yellow 35g / T slurry and bright yellow 25g / T slurry. The temperature of the sizing agent is 60 ~70℃, the concentration is 2~6%, the paper is calendered and dried to obtain light yellow cultural paper. The paper has a uniform hue and strong dyeing power.

Embodiment 2

[0015] Example 2 Chemical additives such as brighteners are added to the pulp in the batching tank, and then the slag is removed by a slag remover and a centrifugal screen. The mixed slurry enters the high-level box, and calcium carbonate filler is added to the mixed slurry to enter the mesh part. Papermaking, the papermaking slurry mixture is pressed and dried, and its water content is reduced to less than 10%. The wet paper after pressing and drying is sized using styrene-maleic anhydride copolymer sizing agent. Add 80% of the total amount of colorant prepared according to the concentration of frozen yellow 35g / T slurry and bright yellow 25g / T slurry. The temperature of the sizing agent is 60~70℃, and the concentration is 2~6%. A liquid dye tank is set before the sizing machine, and 20% of the total amount of the aforementioned dye is added to the tank. The dye tank is transported to the sizing roller by a micro metering pump through a pipe. The slight color difference of the co...

Embodiment 3

[0016] Example 3 The production process of colored paper is the same as that of Example 1, but the added filler is clay, and the sizing agent used is aluminum vanadium-rosin sizing agent.

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PUM

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Abstract

The invention is a new paper-making process. The invention uses grass pulp or wood pulp as main material, the process includes paper manufacturing, glue constructing, dyeing and drying. The character lies in: the process includes: the paper pulp without dye is manufactured, then adds in fillers and assistants, then dries them to decrease the water content, surface glue constructing is carried on, adds in paper dye into the surface glue constructor. Then the invention carries on dye to the paper in process of glue constructing. The invention saves the quantity of the dye, has advantage to environment protection.

Description

Technical field [0001] The invention belongs to the technical field of production methods of colored paper, and particularly relates to a new production process of colored paper that is dyed in a surface sizing process. Background technique [0002] In recent years, the market demand for colored paper in cultural paper has been increasing year by year, because on the one hand, colored paper can prevent readers from myopia, and on the other hand, it can meet the needs of publishing houses to prevent piracy and increase the aesthetics of books to expand sales. In the current production of color paper, the most commonly used process is to directly add the dissolved dyes to the pulp during the pulping process to make the pulp color and make colored paper; another method is to use color spraying before the dryer The system is colored. However, in actual production operations, the use of the above-mentioned production methods will generally encounter the same problems: the control of c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H27/00
Inventor 陈商
Owner SHANDONG BOHUI PAPER INDUSTRY CO LTD