A kind of preparation method of environment-friendly dyed toilet paper

A toilet paper and environment-friendly technology, applied in the field of preparation of environment-friendly dyed toilet paper, can solve problems such as human carcinogenic hazards, and achieve the effects of reducing production costs, bright color characteristics, and high color fastness

Active Publication Date: 2019-10-25
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to make the environmentally friendly dyed toilet paper better applied, the first thing that needs to be solved is the safety issue of the use of dyes in toilet paper. If it is used for ordinary clothing dyeing or ordinary colored cultural paper, synthetic dyes are generally used. The color is bright and fast. Good and cheap, but synthetic dyes generally contain aromatic nitro and amino compounds and their derivatives, which are carcinogenic to the human body. Therefore, only natural dyes are used in the preparation of dyed toilet paper to ensure the safety of colored toilet paper.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Example 1: Preparation of environmentally friendly dyed toilet paper

[0024] (1) Material preparation: fully wet the pulp, and mix the pulp according to a certain proportion to obtain natural pulp;

[0025] (2) Dyeing and refining: add natural dyes to the slurry under stirring state, and after 5 minutes of dispersing by the fiber dispersing machine, dilute the slurry mixture to a mass concentration of 10%, stir evenly, and then use PFI grinding Refine the slurry mixture and control the beating degree to be 40°SR;

[0026] (3) Fixing: take the milled slurry, add a certain amount of cationic fixing agent to the headbox, add water to adjust the slurry to a fiber suspension with a concentration of 0.1wt%, add water and stir to make the slurry evenly dispersed , and the temperature of the slurry in the slurry tank is controlled at 30°C, and the pH is controlled at 4.0;

[0027] (4) Sheet forming and sheet drying: finally take the fiber suspension obtained in step (3) and ...

Embodiment 2

[0029] Example 2: Preparation of environmentally friendly dyed toilet paper

[0030] (1) Material preparation: fully wet the pulp, and mix the pulp according to a certain proportion to obtain natural pulp;

[0031] (2) Dyeing and refining: Add natural dyes to the slurry under stirring state, and after 7 minutes of dispersing by the fiber dispersing machine, dilute the slurry mixture to a mass concentration of 10%, stir evenly, and then use PFI mill Refine the slurry mixture and control the beating degree to be 50°SR;

[0032] (3) Fixing: Take the slurry after grinding, add a certain amount of cationic fixing agent to the headbox, add water to adjust the slurry to a fiber suspension with a concentration of 1wt%, add water and stir to make the slurry evenly dispersed, The temperature of the slurry in the slurry tank is controlled at 40°C, and the pH is controlled at 5.0;

[0033] (4) Sheet forming and sheet drying: finally take the fiber suspension obtained in step (3) and car...

Embodiment 3

[0035] Example 3: Preparation of environmentally friendly dyed toilet paper

[0036] (1) Material preparation: fully wet the pulp, and mix the pulp according to a certain proportion to obtain natural pulp;

[0037] (2) Dyeing and refining: add natural dyes to the slurry under stirring state, and after 8 minutes of defibrillation by the fiber dispersing machine, dilute the slurry mixture to a mass concentration of 10%, stir evenly, and then use PFI grinding Refine the slurry mixture, and control the beating degree to be 55°SR;

[0038] (3) Color fixation: Take the milled slurry, add a certain amount of cationic color-fixing agent to the headbox, add water to adjust the slurry to a fiber suspension with a concentration of 1.2wt%, add water and stir to make the slurry evenly dispersed , and the temperature of the slurry in the slurry tank is controlled at 40 °C, and the pH is controlled at 6.0;

[0039](4) Sheet forming and sheet drying: finally take the fiber suspension obtain...

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Abstract

The invention discloses a preparation method of environment-friendly dyed toilet paper and belongs to the technical field of in-pulp filling. By adopting a dyeing method, natural dye molecules are adsorbed in fibrillated fine fiber or the surface, so that consumption of natural dye is reduced effectively, and production cost is lowered. The toilet paper prepared by adopting the method is high in quality and color fastness, fading of the toilet paper when in use is well avoided, the paper after being dyed is natural and gentle in color tight, the problem of harm caused by synthetic dye and heavy metal to human health and environment is solved, ever-growing spiritual life needs of people are met on the premise that requirements of people on health are met, and color comfort can be brought tousers.

Description

technical field [0001] The invention relates to a preparation method of environment-friendly dyed toilet paper, and belongs to the technical field of pulp filling. Background technique [0002] The development of dyed paper is relatively mature in China, and its demand is relatively large, but the dyed paper we mentioned generally refers to ordinary colored cultural paper, and no application research has been carried out on toilet paper and other paper types. At present, in the preparation process of dyed paper, synthetic dyes are mostly used, which pose a potential threat to human health. At present, toilet paper is mainly white and natural color. Consumers have problems such as aesthetic fatigue and monotony during use. In order to meet consumers' growing spiritual needs and improve people's material life, the aesthetics of toilet paper is also proposed. At the same time, colored toilet paper can increase the attention to scenic spots and some commercial activities. More...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): D21H27/00D21D1/20D21H23/04D21F11/00D21F5/02D21F5/18
CPCD21D1/20D21F5/002D21F5/02D21F5/18D21F11/00D21H23/04D21H27/00
Inventor龙柱张鑫
OwnerJIANGNAN UNIV