Production method of glassine paper

A glassine base paper and production method technology, applied to paper, papermaking, papermaking machines, etc., can solve the problems of huge equipment investment, large energy waste, high production cost, etc., shorten the process flow, reduce production cost, and improve market competitiveness Effect

Active Publication Date: 2009-02-25
MINFENG SPECIAL PAPER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above production process needs to dry the moisture in the paper first, and then moisten and replenish the moisture. The production process is long and the energy waste is large; and it requires a special humidifier, which requires a huge investment in equipment and high production costs.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] a. beating the long fiber and the short fiber, the beating degree of the long fiber is 50°SR, and the beating degree of the short fiber is 70°SR;

[0014] b. According to the weight ratio of long fiber: short fiber is 90:10, and add 0.05% (weight) of sizing agent alkyl ketene dimer to mix, dehydrate through wire part, press, and dry in the front section. The water content is controlled at 5%, and the surface sizing agent starch is added for surface sizing, and the sizing amount is 3g / m 2 , After drying, the moisture content is controlled at 9%, and the ratios listed above are relative to the total amount of pulp;

[0015] c. Paper passes through two calendering zones during super-pressure calendering. Each calendering zone consists of a hard roll and a soft roll. The pressure is 1500kN / m, and the temperature of the roll surface is 250°C.

Embodiment 2

[0017] a. beating long fibers and short fibers, the beating degree of long fibers is 80 ° SR, and the beating degree of short fibers is 40 ° SR;

[0018] b. According to the weight ratio of long fiber: short fiber is 50:50, and add sizing agent olefin-based succinic anhydride 0.5% (weight) for mixing, dehydration, pressing, front-stage drying, moisture control at 11%, adding surface sizing agent polyvinyl alcohol for surface sizing, the amount of sizing is 0.5g / m 2 , After drying, the moisture content is controlled at 15%, and the ratios listed above are relative to the total amount of pulp;

[0019] c. Paper passes through five calendering zones during super-pressure calendering, each calendering zone consists of a hard roll and a soft roll, the pressure is 150kN / m, and the roll surface temperature is 120°C.

Embodiment 3

[0021] a. beating the long fiber and the short fiber, the beating degree of the long fiber is 60°SR, and the beating degree of the short fiber is 50°SR;

[0022] b. According to the weight ratio of long fiber: short fiber is 60:40, and add 0.2% (weight) of sizing agent alkyl ketene dimer to mix, dehydrate through wire section, press, and dry in the front section. The water content is controlled at 4%, and the surface sizing agent starch and polyvinyl alcohol mixture are added for surface sizing, and the sizing amount is 1.5g / m 2 , After drying, the water content is controlled at 12%, and the ratios listed above are relative to the total amount of pulp;

[0023] c. The paper passes through a calendering zone during super-pressure calendering. Each calendering zone consists of a hard roll and a soft roll. The pressure is 250kN / m, and the temperature of the roll surface is 300°C.

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Abstract

The invention discloses a production method for Glassine which includes the technique steps of slurry beating, slurry preparing, shaping on a net, squeezing, front section drying, surface sizing, back section drying, excessive pressing, etc. The production method for Glassine can simplify the technique for producing the Glassine and reduce the production cost.

Description

technical field [0001] The invention relates to a method for producing glassine base paper. Background technique [0002] The self-adhesive bottom paper is made of glassine base paper coated with silicone oil on the surface. Therefore, glassine base paper needs to have low porosity and silicone oil absorption value, and high surface smoothness. In order to ensure high compactness and good surface properties of glassine base paper, it is necessary to increase the compactness of the paper through overpressure during the production process. In order to achieve a good overpressure effect, the paper needs to have a certain water content before overpressure to ensure that the fibers have good compressibility during overpressure. [0003] At present, the production process of glassine base paper is: beating - pulping - online forming - front drying - surface sizing - back drying - wetting - overpressure. After the back drying, the paper moisture is generally controlled at about 7...

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 & Authority Applications(China)
IPC IPC(8): D21H27/00D21F11/00D21G1/00D21H21/16
Inventor 黄晓钢张顺根周明华曹淼淼戴蒨朱骏
Owner MINFENG SPECIAL PAPER
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