Mixed solid dye and application thereof

A dye and solid technology, applied in special paper, raw material separation, fiber raw material processing, etc., can solve the problems of high toning costs and lack of dyes, and achieves reduction of paper toning costs, obvious effects, and improved utilization. Effect

Active Publication Date: 2017-01-04
SHANGHAI EMPEROR OF CLEANING HI TECH
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the actual production process, the traditional coloring process usually uses three liquid dyes of blue, red and yellow to ...

Method used

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  • Mixed solid dye and application thereof
  • Mixed solid dye and application thereof
  • Mixed solid dye and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-5

[0025] According to the target value of the customer's paper color: L*=60.5±1.0, a*=8.0±0.5, b*=21.0±0.5, as the goal of color matching, pulp dyeing is carried out according to the following steps:

[0026] (1) Prepare pulping and papermaking waste slurry that is uniformly dispersed;

[0027] (2) adding the mixed solid dye to water for brewing to make a mixed solid dye brewing liquid;

[0028] (3) Add dry strength agent, mixed solid dye brewing solution, cationic starch, alkyl ketene dimer, aluminum sulfate and retention aid to the slurry in sequence, stir and disperse evenly;

[0029] (4) Squeeze the mixed pulp, dry it, and shape it to obtain a paper-like product.

[0030] As mentioned above, the slurry concentration is about 3-4wt%, the addition of dry strength agent is 3kg / t slurry, the solid mixed dye is added according to the formula in Table 1, the addition amount is 3kg / t, and the addition amount of cationic starch is 10kg / t; The addition amount of ketene dimer ...

Embodiment 6

[0036] The present embodiment produces the surface paper and the core paper of corrugated paper, adopts No. 4 paper machine, No. 9 paper machine of a certain paper mill in Riau Province, Indonesia and No. 13 paper machine of a certain paper mill in Jakarta;

[0037] Capacity: 80-120T / day;

[0038] Paper machine speed: 200-255m / min;

[0039] Paper machine raw materials: waste paper boxes and scraps, scraps of waste paper core tubes, damaged paper recycling, sludge from papermaking wastewater treatment, various waste papers;

[0040] Copying process: Fourdrinier forming, ordinary mechanical pressing (two press zones), double-row dryer drying;

[0041] Chemicals: dry strength agent, alkyl ketene dimer, starch, aluminum sulfate, etc.;

[0042] Dye ratio: Black G 7.2%, Brown RN 27.3%, Yellow R 65.5%.

[0043] The specific steps are the same as those in Example 1-5, the amount of solid mixed dye added is as shown in Table 2, and the paper color results of the standard sample ...

Embodiment 7-9

[0048] Embodiment 7-9 adopts different formulas and reagent additions according to different customer needs, pulp dyeing is carried out according to the following steps:

[0049] (1) prepare pulping and papermaking waste slurry uniformly dispersed, and the slurry concentration is about 3-4wt%;

[0050] (2) adding the mixed solid dye to water for brewing to make a mixed solid dye brewing liquid;

[0051] (3) Add dry strength agent, mixed solid dye brewing solution, cationic starch, alkyl ketene dimer, aluminum sulfate and retention aid to the slurry in sequence, stir and disperse evenly;

[0052] (4) Squeeze the mixed pulp, dry it, and shape it to obtain a paper-like product.

[0053] Table 3 is the formula for mixing solid dyes, and Table 4 is the amount of reagents added in dyeing.

[0054] Table 3 embodiment 7-9 mixed solid dye formula

[0055]

[0056] The reagent addition amount in table 4 embodiment 7-9 staining uses

[0057] Example 7 Example 8 Exam...

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Abstract

The invention relates to a mixed solid dye and application thereof to production of dyed pattern product by utilization of pulping and papermaking waste. The mixed solid dye is mainly formed by mixing Brown RN, Black G and Yellow R, wherein Brown RN is direct red brown RN, and accounts for 27-36 wt%, Black G is direct black 19, and accounts for 6-10 wt%, and Yellow R is direct yellow 11, and accounts for 55-65 wt%. Compared with the prior art, a proper mixed dye is provided for production of a pattern meeting use requirements by utilizing the papermaking waste, the utilization rate of the solid waste by a pulping and papermaking enterprise is improved, three basic dyes of yellow, brown and black are adopted for blending, a proper formula is developed, the treatment effect on the solid dye with darker color is obvious, and through adoption of the mixed dye, the paper color modulation cost is reduced, and the market competitiveness of the paper product is improved.

Description

technical field [0001] The invention relates to a mixed solid dye, in particular to a mixed solid dye and its application in making dyed paper-like products from pulping and papermaking waste. Background technique [0002] As we all know, a large amount of solid waste will be generated in the process of pulping and papermaking. With the expansion of the industrial scale, the environmental impact of these solid wastes has become increasingly prominent, and various ecological and social problems that follow have gradually stand out. The solid waste in the pulping and papermaking process mainly includes raw material preparation waste slag from primary pulp production, white mud from alkali recovery workshop, pulping waste slag, wastewater treatment sludge, screening waste slag generated in the process of secondary fiber utilization, and papermaking and post-processing Leftovers during processing. Some of these wastes are used in power boilers and alkali recovery boilers for r...

Claims

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Application Information

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IPC IPC(8): D21H27/00D21B1/32D21H17/06D21H17/29D21H17/55D21H17/66D21H21/18D21H21/28
CPCD21B1/32D21H17/06D21H17/29D21H17/55D21H17/66D21H21/18D21H21/28D21H27/00Y02W30/64
Inventor 王炜
Owner SHANGHAI EMPEROR OF CLEANING HI TECH
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