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Method for clearing ink printing mark on printing products

A printing and ink technology, which is applied in the field of removing ink imprints on printed materials, can solve the problems of low recycling rate and high consumption, and achieve the effect of high conversion rate and low resource consumption

Inactive Publication Date: 2007-08-01
SHANGHAI DATONG HIGH SCHOOL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of the background technology is that using waste paper to make paper still needs to consume a lot of resources such as water, electricity, coal, and caustic soda, and the recycling rate of waste paper for recycled paper is not high. Every 1000 kg of waste paper can only produce less than 800kg of recycled paper

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] In this embodiment, except for the following differences, the rest of the operations are exactly the same as those of the above-mentioned first technical solution: it is characterized in that, in the first step, the solvent is benzene.

Embodiment 2

[0022] In this embodiment, except for the following differences, the remaining operations are exactly the same as those of the above-mentioned first technical scheme: it is characterized in that, in the first step, the solvent is a mutual solution of chlorohydrination and benzene, and the volume ratio of chlorohydrination and benzene It is 1:9.

Embodiment 3

[0024] In this embodiment, except for the following differences, all the other operations are identical to those of the above-mentioned second technical solution: it is characterized in that, in the first step, the solvent used to remove the ink marks on the whole waste paper is benzene.

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PUM

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Abstract

A method for removing ink blot on printed matter belongs to dissolve and remove ink technology field. The method can dry clean the ink blot on printed matter (such as papers) using the flux which can dissolve link-material of ink. After removing all ink blot on a wastepaper, a recycled paper can be obtained.The method of the invention has the following advantages: renewing papers through removing ink blot on printed paper, no cost of water, electricity, coal, and other natural resources, waste paper can be renewed into new paper 100% in situ, less resource consuming, high conversion rate; the main components of ink is not be dissolved after the ink is dissolved, but still float on paper, it can be reused after recycled. The method of the present invention is particularly suited to renew the wastepaper of high-quality paper (such as computer printing paper) into recycled paper.

Description

technical field [0001] The invention relates to a method for removing ink imprints on printed matter, and belongs to the technical field of dissolving and removing ink. Background technique [0002] Paper can be divided into virgin paper and recycled paper. The raw material for the production of virgin paper is wood, and the amount of wood consumed by the production of paper in the world every year is quite amazing. And the world's forest resources are far from being able to meet the large consumption of paper. Environmental experts generally believe that in the 21st century, human beings will face an unprecedented resource crisis, including the forest crisis. So humans must save paper. Recycling waste paper and producing recycled paper from waste paper are the countermeasures that are generally adopted all over the world. The production method of recycled paper at this stage is: take 100 parts by weight of waste paper, add 2 to 3 parts by weight of caustic soda, 4 to 5 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B08B7/00C09D9/00B09B3/00
Inventor 季怡
Owner SHANGHAI DATONG HIGH SCHOOL