Manufacturing process of ultrahigh bulk paper cup raw paper

A production process and ultra-high loosening technology, applied in papermaking, papermaking, textiles and papermaking, etc., can solve the problems of increasing the risk of cracking of the coil opening, reducing the elongation of the base paper, and reducing the performance of the base paper. The effect of bursting, increasing bulk, and improving production efficiency

Inactive Publication Date: 2015-09-16
GUANGXI JINGUI PULP PAPER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The basis weight of paper cups on the market is 170-210g / m 2 , surface layer and bottom layer are 30~40g / m 2 , the weight of the core layer is 110~130g / m 2 , the bulk thickness is 1.2~1.3cm 3 / g, for the same quantitative paper cup base paper, the larger the bulk, the greater the thickness, that is, the better the stiffness of the base paper, but the strength and toughness will be worse, increasing the risk of cracking at the mouth
In the production process of base paper for paper cups, in order to control the production cost, the manufacturer will increase the bulk of the base paper as much as possible to improve the performance of the base paper while maintaining the constant weight of the base paper. However, when the bulk is too high, it will exceed 1.5cm 3 / g, if the thickness is too thick, the elongation of the base paper will decrease, and the greater the pressure required for forming during processing and forming, the mechanical extrusion during forming will greatly increase the risk of cracking at the roll mouth and reduce the performance of the base paper

Method used

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  • Manufacturing process of ultrahigh bulk paper cup raw paper
  • Manufacturing process of ultrahigh bulk paper cup raw paper
  • Manufacturing process of ultrahigh bulk paper cup raw paper

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030]1) pulping: including making three-layer slurry of surface layer, bottom layer and core layer, the surface layer slurry is made of the following raw materials by weight percentage: LBKP 70%, NBKP 30%; the bottom layer slurry is made of the following raw materials by weight percentage Made: LBKP 65%, NBKP 35%; the core layer slurry is made from the following raw materials by weight: LBKP 20%, NBKP 15%, APMP 65%; the bulk thickness of the APMP slurry is 3.5cm 3 / g, tensile strength 14N·m / g.

[0031] 2) seasoning: including sizing, the sizing is to add rosin and aluminum sulfate to three layers of slurries respectively, and the consumption of rosin in each layer is 15kg / t of each layer of slurry, and the amount of aluminum sulfate in each layer is 15kg / t of each layer of slurry.

[0032] 3) Papermaking: The three-layer slurry after the seasoning is sent to a paper machine for composite papermaking, and the surface layer is quantitatively 25g / m2 2 , the core layer quantitat...

Embodiment 2

[0038] 1) Pulping: including the manufacture of three-layer slurry of surface layer, bottom layer and core layer, the surface layer slurry is made of the following raw materials by weight: LBKP 75%, NBKP 25%; The bottom layer slurry is made of the following raw materials by weight Made: LBKP 70%, NBKP 30%; the core layer slurry is made from the following raw materials by weight: LBKP 30%, NBKP 10%, APMP 60%; the bulk thickness of the APMP slurry is 3.7cm 3 / g, tensile strength 16N·m / g.

[0039] 2) seasoning: including sizing, the sizing is to add rosin and aluminum sulfate to the three layers of slurries respectively, and the consumption of rosin in each layer is 20kg / t of each layer of slurry, and the amount of aluminum sulfate in each layer is 25kg / t of each layer of slurry.

[0040] 3) Papermaking: send the seasoned three-layer slurry into a paper machine for composite papermaking, adjust the pulp-to-web speed ratio in the process of papermaking to 0.94, and the surface lay...

Embodiment 3

[0042] 1) Pulp making: including making three layers of slurry: surface layer, bottom layer and core layer, the surface layer is made of the following weight percentage of the slurry: LBKP 72%, NBKP 28%; the bottom layer is made of the following weight percentage of the slurry Manufactured: LBKP68%, NBKP 32%; the core layer is made of the following pulps by weight: LBKP 25%, NBKP10%, APMP 65%; the bulk of the APMP pulp is 3.6cm 3 / g, tensile strength 15N·m / g.

[0043] 2) seasoning: including sizing, the sizing is to add rosin and aluminum sulfate to three layers of slurries respectively, and the consumption of rosin in each layer is 18kg / t of each layer of slurry, and the amount of aluminum sulfate in each layer is 20kg / t of each layer of slurry.

[0044] 3) Papermaking: send the seasoned three-layer slurry into a Fourdrinier paper machine for compound papermaking, adjust the pulp-to-web speed ratio in the papermaking process to 0.96, and the surface layer quantitatively to 30...

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Abstract

The invention provides a manufacturing process of ultrahigh bulk paper cup raw paper. The manufacturing process comprises the steps of pulping, blending and papermaking. A surface layer is prepared from the following raw materials in percent: 70-75% of LBKP and 25-30% of NBKP; a bottom layer is prepared from the following raw materials in percent: 65-70% of LBKP and 30-35% of NBKP; a core layer is prepared from the following raw materials in percent: 20-30% of LBKP, 10-15% of NBKP and 60-65% of APMP; the bulkiness of the APMP pulp is 3.5-3.7cm<3> / g, and the tensile strength is 14-16N*m / g; the step of papermaking is to feed three layers of blended pulp into a papermaking machine to carry out compound papermaking; the quantity of the surface layer is 25-35g / m<2>, the quantity of the core layer is 110-130g / m<2> and the quantity of the bottom layer is 35-45g / m<2>. The raw paper has high bulkiness and good flexibility and is not easy to turn and explode.

Description

technical field [0001] The invention relates to a manufacturing process of paper, in particular to a manufacturing process of ultra-high bulk paper cup base paper. Background technique [0002] The paper cup base paper needs to be in contact with liquid food, even with hot liquid food, and has high requirements on the stiffness, strength and toughness of the base paper. Stiffness is an important factor that affects the processing and forming of paper cups. If the stiffness of the base paper is poor, the paper cup will easily collapse or wrinkle due to the strong mechanical action of the mold during processing and forming. If the stiffness of the base paper is too high, the roll opening will burst easily. At present, the method of increasing the thickness of the base paper is commonly used to improve the stiffness of the base paper. However, the diameter of the roll opening of the paper cup processing mold does not allow the thickness of the base paper to be too high. Because...

Claims

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Application Information

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IPC IPC(8): D21H11/10D21H15/10D21H17/67D21F11/02
Inventor 孔志进郗引引朱仁和王钧喜
Owner GUANGXI JINGUI PULP PAPER
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