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Preparation method of paper cup raw paper

A production process and technology for base paper, which is applied in the process of adding pulp raw materials, papermaking, and paper making machines, etc., can solve the problems of stiffness and difficulty, the performance of recycled fibers is attenuated, and fibers are not easy to absorb water and swell. The effect of keratinizing fibers and increasing bulk

Inactive Publication Date: 2017-08-15
GUANGXI JINGUI PULP PAPER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Before papermaking, the gaps in the fiber cell walls are filled with water, but during the papermaking process, especially in the drying of paper sheets, as the moisture in the wet paper sheets evaporates, the moisture in the fiber cell wall gaps decreases, and the water Under the action of the surface tension of the cell wall, the sublayer structure of the cell wall forms a partial hydrogen bond, which leads to the rearrangement and orientation of the microfibers, forming a tightly bonded crystal-like structure, resulting in the subsequent recycling process. It is not easy to absorb water and swell, stiff and difficult to fibrillate, which will lead to the attenuation of the performance of recycled fibers

Method used

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  • Preparation method of paper cup raw paper
  • Preparation method of paper cup raw paper
  • Preparation method of paper cup raw paper

Examples

Experimental program
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Effect test

Embodiment 1

[0022] 1) Pulping: including the manufacture of surface layer, bottom layer and core layer three-layer slurry, the surface layer slurry is made of the following raw materials in weight percentage: LBKP 70%, NBKP 30%; the bottom layer slurry is made of the following raw materials in weight percentage Made: LBKP65%, NBKP 35%; the core layer slurry is made of the following raw materials in parts by weight: LBKP 20%, NBKP 15%, APMP65%; the bulk thickness of the APMP pulp is 3.5cm 3 / g, tensile strength 14N·m / g; add a mass fraction of 3% ferrous nitrate solution to each layer of slurry, the amount of ferrous nitrate solution added is 5g / t slurry, mix and stir, and the ultrasonic power is 10W Under treatment for 30s.

[0023] 2) Seasoning: including filling, adding talc powder and mineral fiber to the core layer slurry, the total amount of talc powder and mineral fiber added is 150kg / t core layer slurry, and the weight ratio of talc powder to mineral fiber is 2:1. It also includes ...

Embodiment 2

[0026] 1) pulping: including the manufacture of surface layer, bottom layer and core layer three-layer slurry, the surface layer slurry is made of the following raw materials in weight percentage: LBKP 75%, NBKP 25%; the bottom layer slurry is made of the following raw materials in weight percentage Made: LBKP70%, NBKP 30%; the core layer slurry is made of the following raw materials in parts by weight: LBKP 30%, NBKP 10%, APMP60%; the bulk thickness of the APMP pulp is 3.7cm 3 / g, tensile strength 16N m / g; add a mass fraction of 6% ferrous nitrate solution to each layer of slurry, the amount of ferrous nitrate solution added is 10g / t slurry, mix and stir, and the ultrasonic power is 50W Down processing 120s.

[0027] 2) Seasoning: including filling, adding talc powder and mineral fiber to the core layer slurry, the total amount of talc powder and mineral fiber added is 200kg / t core layer slurry, and the weight ratio of talc powder to mineral fiber is 4:1. It also includes si...

Embodiment 3

[0030] 1) pulping: including the manufacture of surface layer, bottom layer and core layer three layers of slurry, the surface layer is made of the following slurry by weight percentage: LBKP 72%, NBKP 28%; the bottom layer is made of the following slurry by weight percentage Made: LBKP68%, NBKP32%; The core layer is made of the following slurry by weight: LBKP 25%, NBKP10%, APMP 65%; The bulk thickness of the APMP slurry is 3.6cm 3 / g, tensile strength 15N m / g; add ferrous nitrate solution with a mass fraction of 5% in each layer of slurry, the amount of ferrous nitrate solution added is 8g / t slurry, mix and stir, and the ultrasonic power is 30W Next process for 90s.

[0031] 2) Seasoning: including filling, adding talc powder and mineral fiber to the core layer slurry, the total amount of talc powder and mineral fiber added is 180kg / t core layer slurry, and the weight ratio of talc powder to mineral fiber is 3:1. It also includes sizing. The sizing is to add rosin and alumi...

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Abstract

The invention provides a preparation method of paper cup raw paper. The preparation method comprises steps of pulping, material blending, and paper making. In the step of pulping, a ferrous nitrate solution with a mass concentration of 3 to 6% is added into a slurry material for stirring mixing, wherein 5 to 10g of the ferrous nitrate solution is added into each ton of the slurry material; an obtained mixture is subjected to processing at an ultrasonic frequency ranging from 10 to 50W for 30 to 120s. According to the preparation method, ultrasonic treatment and adding of the ferrous nitrate solution is combined, so that the thickness of plant fiber cell wall is increased greatly, the bulkiness of paper cup raw paper is increased, fiber cutinization in paper cup recycling is avoided, and paper cup recovery rate is increased.

Description

technical field [0001] The invention relates to a paper manufacturing process, in particular to a paper cup base paper manufacturing process. Background technique [0002] The basis weight of paper cups on the market is generally 170-210g / ㎡, the surface layer and bottom layer are 30-40g / ㎡, the core layer is 110-130g / ㎡, and the bulk thickness is 1.2-1.3cm 3 / g, for the same weight base paper for paper cups, the larger the bulk, the greater the thickness, that is, the better the stiffness of the base paper, and the paper cup base paper with high bulk can reduce the base paper weight under the same thickness, so as to save costs, and is light and easy The purpose of carrying and reducing transportation costs. Therefore, improving the bulk of base paper is of great significance for saving resources, reducing costs, and improving production efficiency. [0003] Because paper cups are disposable items, they are generally recycled and reused after use. However, there are countles...

Claims

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Application Information

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IPC IPC(8): D21H17/66D21H23/04D21F9/00
CPCD21F9/00D21H17/66D21H23/04
Inventor 孔志进郗引引
Owner GUANGXI JINGUI PULP PAPER