Production method of dyed pure-natural colored paper

A production method and technology of colored paper, which is applied in the field of light industrial papermaking, can solve the problems of short shelf life, easy air bubbles, large batch production of single color, etc., and achieve the effect of uniform and transparent dyeing, excellent toughness, and good skin care function

Pending Publication Date: 2019-01-11
何炽斌
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  • Claims
  • Application Information

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Problems solved by technology

Relevant research institutions have also conducted related research on natural dyed colored paper. However, due to the high cost of natural dyed dyes, high impurities, large production batches, short shelf life, and easy foaming of the dye solution, a large amount of dyes need to be added during the production process. Defoamers, preservatives, mordants, acids, alkalis, chemical color fixing agents and other chemical additives are used for dyeing, which is not environmentally friendly, and the residual liquid after dyeing cannot be achieved due to the addition of a large amount of chemical additives. Recycling, resulting in high cost of naturally dyed colored paper, difficult to apply to mass production
[0003] During the production process of dyed colored paper, no chemical additives can be added for pure natural dyeing. At present, there is still no production method of this kind of pure natural dyed colored paper in the industry.
One of the technical problems is that the dye solution of natural dyeing is prone to bubbles. When the size and dye solution are mixed and colored in the traditional process, it is inevitable to use a large amount of chemical additives such as defoamers. There will be bad smells, which will affect the normal quality and sales of the products; at the same time, due to the short shelf life of natural dyeing solutions, chemical additives such as preservatives are unavoidably used in traditional techniques, which greatly affects the quality of pure natural dyed colored paper. Pure natural performance; in addition, the traditional mixing and coloring is to mix the slurry and dye solution in a large stock tank and then transport it to each papermaking machine by pipeline to make paper. The production batch of single color is large, which is not conducive to production scheduling and product quality. Sales orders; at the same time, due to the unavoidable use of a large amount of chemical additives in the production process, the residual dye solution on the papermaking machine cannot be recycled, and the cost of pure natural colored paper products has become very high, which is not conducive to the wide application of natural health products
However, with the continuous improvement of people's quality of life, like the colored household paper that has been widely used by people in developed countries, modern people's pursuit of fashion and personalized life pays more and more attention to the exquisiteness, magnificence and visual pleasure of paper. However, this kind of product uses a lot of chemical synthetic dyes in the production process, which will not only pollute the environment, but also pose a safety hazard to packaged food and body contact.
In the future, the concept of "green environmental protection" will become more popular, and people will pay more attention to the sustainable development of colored paper. There is no natural dyed colored paper product that can meet the above needs

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Examples

Experimental program
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Effect test

Embodiment 1

[0031] In this embodiment, a new production method of pure natural dyed colored paper, taking a kind of paper made of wood pulp as an example, illustrates a new method of using pure natural dyes for paper dyeing production: first choose dragon fruit as paper product For the dyeing dye, choose yam with high viscosity as the fixing agent for natural dyeing, wash the selected dragon fruit and yam, and obtain the natural dye solution through extraction, and then filter the natural dye solution once to further remove it Impurities in the dye solution. After the dyeing solution is opened, the spray dyeing of the paper product is carried out. The white paper product before dyeing is selected to pass through the wire part of the papermaking machine (as shown in the attached paper). figure 1 The position of F shown) and the wet white pulp after pressing, the number of layers of wet paper when dyeing is 1 layer, as shown in the attached figure 1 The location of D is shown. White paper...

Embodiment 2

[0033] In this embodiment, a new production method of pure natural dyed colored paper, taking a kind of sanitary roll paper made of bamboo pulp as an example, illustrates the new method of utilizing pure natural dyes for paper dyeing production: first select the skin of pomegranate and Gardenia fruit is used as a dye for paper dyeing, and ginseng fruit and yam yam with high viscosity are selected as the fixing agent for natural dyeing. The selected pomegranate peel, gardenia fruit, ginseng fruit and yam yam are washed clean, and the natural color is obtained through extraction. Dye liquor, and then filter the natural dye liquor twice to further remove impurities in the dye liquor. After the dyeing solution is opened, the spray dyeing of the paper product is carried out. The white paper product before dyeing is selected to pass through the wire part of the papermaking machine (as shown in the attached paper). figure 1 The position of F shown) and the wet white pulp after pressi...

Embodiment 3

[0035] In this embodiment, a new production method of pure natural dyed colored paper, taking a kind of wood pulp as an example to illustrate the new method of using pure natural dyes for paper dyeing production: first select strawberries and safflower as For paper dyeing dyes, ginseng fruit and yam yam with high viscosity are selected as the fixing agent for natural dyeing. The selected strawberries, safflower, ginseng fruit and yam yam are washed clean, and the natural dye solution is obtained by extraction, and then the natural dye The solution is filtered once to further remove impurities in the dye solution. After the dyeing solution is opened, the paper is spray dyed. The white paper before dyeing is the wet paper made by the copy machine and then dried and rolled into a white paper roll. The number of layers of dry paper during dyeing is 1. layer. White paper products enter as attached figure 2 The L shown can support the paper product on the felt mesh belt. After th...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The invention discloses a production method of dyed pure-natural colored paper. The production method comprises the following steps: (S1) preparing a pure natural dye liquid; (S2) preparing a white paper product; (S3) directly dyeing; (S4) adding a stripping agent; (S5) drying; (S6) collecting dyeing raffinate; (S7) circularly utilizing and supplying the dye liquid; and (S8) coiling. The production method has the beneficial effects that a traditional method for dyeing a paper product through chemical dyestuffs is replaced with a novel pure natural dye process in the technical scheme, the paperproduct can be dyed without any chemical dyestuff in the dyeing process, and the problems of the pollution and health influence of the dyeing of the traditional chemical dye are solved; fruits with high pigment contents are selected as a dye raw material, so that the pure nature property in the paper product dyeing process is realized; and fruit plants with relatively high viscidity are taken asa natural-dyeing color fixing agent, so that the problem of the dyeing firmness of the pure nature dyeing is solved.

Description

technical field [0001] The invention relates to the technical field of light industry papermaking, in particular to a production method for dyeing pure natural colored paper. Background technique [0002] At present, traditional colored paper is mostly produced with chemical dyes. Common methods include: full-color printing, brushing, and color paste manufacturing to produce colored paper. Full-color printing is to print various colors on white paper towels. The color paper produced by a variety of patterns or printed colors on the ground; the brushing method is to use the method of coating on white paper towels to achieve coloring; the production of color paper by color paste manufacturing is to combine the decomposed fiber slurry with dyeing and dyeing. The above-mentioned mixed color paste is sent to the paper machine through the slurry flow system for paper making, and after dehydration on the Internet, molding, drying, and coiling, traditional colored paper is produced....

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): D21H27/00D21F11/00
CPCD21F11/00D21H27/00
Inventor何炽斌何欣洋
Owner何炽斌