Method for producing glassine paper

A glassine base paper and production method technology, applied in special paper, paper, papermaking, etc., can solve the problems of high energy consumption, low degree of automation, and high production cost, so as to reduce production cost, save energy consumption for beating, and increase market share. The effect of competitiveness

Inactive Publication Date: 2012-06-13
YUEYANG FOREST & PAPER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above production process consumes a lot of energy when the pulp is beaten to a high degree of beating, and the dryness of the paper sheet after the press is low, and a large amount of steam is consumed in the pre-drying process, which leads to a large waste of energy and high production costs.
And they are all made by small paper machines. Due to the low degree of automation of the equipment, the evenness of the paper is not good.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Embodiment 1: a. Bleached kraft softwood chemical pulp and bleached kraft hardwood chemical pulp board are pulped respectively at 10% concentration, and 0.4% (weight, pulp) beating aid is added respectively in pulp to improve Beating after active cellulase, the beating concentration is 4%, the beating degree of bleached kraft softwood pulp is 70 ° SR, and the beating degree of bleached kraft hardwood pulp is 70 ° SR; b. bleaching kraft softwood pulp by weight : Bleached kraft hardwood pulp is mixed with a ratio of 20:80, and 0.08% (weight) of sizing agent alkyl ketene dimer is added for mixing. After dehydration forming at the wire part, pressing, front-stage drying, and moisture control At 4-5%, add surface sizing agent starch for surface sizing, and the amount of sizing is 3g / m 2 , The latter part is dried, and the moisture content is controlled at 9%. The ratios listed above are relative to the total amount of pulp; c. The paper passes through four calendering areas ...

Embodiment 2

[0014] Embodiment 2: a. Bleached kraft softwood chemical pulp and bleached kraft hardwood chemical pulp board are pulped respectively at 10% concentration, then add 0.25% (weight, pulping) beating aid respectively in pulp After the modified cellulase is beaten, the beating concentration is 4%, the beating degree of bleached kraft softwood pulp is 80 ° SR, and the beating degree of bleached kraft hardwood pulp is 80 ° SR; b. bleaching kraft softwood by weight Pulp: bleached kraft hardwood pulp is mixed with a ratio of 30:70, and 0.7% (weight) of olefin-based succinic anhydride is added for mixing. After dehydration at the wire section, pressing, and drying in the front section, the moisture is controlled at 8 %, add surface sizing agent starch, styrene-acrylic sizing agent and paraffin emulsion to mix for surface sizing, and the sizing amount is 2g / m 2 , The latter part is dried, and the moisture content is controlled at 12%. The ratios listed above are relative to the total a...

Embodiment 3

[0016] Embodiment 3: a. The bleached kraft softwood chemical pulp and the bleached kraft hardwood chemical pulp board are pulped respectively at a concentration of 10%, and then 0.3% (weight, pulping) beating aid is added respectively in the pulp After the modified cellulase is beaten, the beating concentration is 4%, the beating degree of bleached kraft softwood pulp is 60 ° SR, and the beating degree of bleached kraft hardwood pulp is 60 ° SR; b. bleaching kraft softwood by weight Pulp: bleached kraft hardwood pulp with a ratio of 10:90, mixed with 0.6% (weight) of alkyl ketene dimer as a sizing agent, dehydrated in the wire section, pressed, and dried in the front section to remove moisture Control at 4%, add surface sizing agent styrene-acrylic sizing agent and paraffin emulsion for surface sizing, and the sizing amount is 1.5g / m 2 , The latter part is dried, and the moisture content is controlled at 12%. The ratios listed above are relative to the total amount of pulp; c...

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Abstract

The invention relates to a method for producing glassine paper, which is characterized by comprising the following steps: a. respectively carrying out pulping on bleached sulfate needle wood chemical pulp and bleached sulfate broadleaf wood chemical pulpboard, respectively adding an beater auxiliary agent modified cellulase in the pulp for beating; b. preparing the pulp according to weight ratio, adding a sizing agent for mixing, forming by net part dehydration, carrying out shoe pressing and drying; c. passing the paper through at least 3 pressing areas when superpressing. The method of the present invention saves beating energy consumption by 10-15% and steam consumption by 5%.

Description

technical field [0001] The invention relates to a method for producing glassine base paper. Background technique [0002] Glassine base paper has good transparency; high strength, certain toughness; good formation, smooth paper surface; Release paper processing requirements. [0003] Self-adhesive bottom paper and release paper are made of glassine base paper coated with silicone oil on the surface. Because glassine paper has been super-calendered, the firmness of the paper is very good, which is especially suitable for die-cutting factories. Glassine paper is mainly used in food, medicine and other industries, and can be used for high-speed automatic labeling of special tapes, laser anti-counterfeiting labels, and other release applications. Therefore, glassine paper has high quality requirements, and glassine base paper needs to have the properties of low porosity and silicone oil absorption value, and high surface smoothness. In order to ensure high compactness and go...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H27/00D21H21/16
Inventor 陈金山邵启超尹超李庆秋张志三刘春景
Owner YUEYANG FOREST & PAPER CO LTD
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