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A surface sizing agent for papermaking, and a papermaking method for improving paper strength and water resistance

A surface sizing agent and paper strength technology, which is applied in the field of papermaking to improve paper strength, surface sizing agent, and water resistance, can solve the problems of high cost, reduce application amount, improve strategic security, and high compressive strength Effect

Active Publication Date: 2015-05-13
RISINGSTAR BIOTECH GUANGZHOU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method also has the disadvantage of high cost
[0010] Bentonite is an inexpensive industrial mineral. At present, it has been used in many applications in the paper industry, such as retention and drainage, coating sizing, resin / sticky control, wastewater treatment, waste paper deinking and paper display. However, so far, there is no report on the use of bentonite or other layered silicates in surface glue chemicals to improve paper strength and water resistance

Method used

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  • A surface sizing agent for papermaking, and a papermaking method for improving paper strength and water resistance
  • A surface sizing agent for papermaking, and a papermaking method for improving paper strength and water resistance
  • A surface sizing agent for papermaking, and a papermaking method for improving paper strength and water resistance

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0136] Example 1 Application of Na-based Bentonite Substituting Partial Surface Glue Starch in Container Board Production

[0137] 1. Materials

[0138] The starch is corn starch (Starch B200, a product of American Grain Process Company), the chemical primary color paste is from the chemical pulp mill (Macon, Georgia) of GPI Company in Georgia, the United States, and the sodium-based bentonite mineral product (sample B) is from Ruichenxing Biotechnology (Guangzhou ) Co., Ltd., its chemical structure analysis results are shown in Table 2.

[0139] Two, the steps of papermaking method are as follows:

[0140] (1) According to the TAPPI method, the grammage is 180g / m 2 The slices were dried to constant moisture;

[0141] (2) Get starch and put it in a beaker, add water to obtain a starch aqueous solution with a concentration of 8wt%, then heat to 100°C, and cook for 60 minutes under mechanical stirring at 1000RPM;

[0142] (3) Preparation of bentonite slurry: get 3.2g and 6.4...

Embodiment 2

[0153] Example 2 Application of Various Silicate Mineral Soils Substituting Part of Surface Adhesive Starch in the Production of Corrugated Paper with OCC Raw Materials

[0154] 1. Materials

[0155] The starch is corn starch or tapioca starch, which is provided by Dongguan Perfect Starch Co., Ltd.; the base paper is from Dongguan Tomorrow Paper Co., Ltd., which is obtained from the surface rubber machine when the paper machine breaks, and is 100% corrugated paper produced by OCC national waste; The chemical structure analysis results of bentonite minerals and other mineral products are shown in Table 2.

[0156] 2. The steps of the surface sizing method are as follows:

[0157] (1) According to the TAPPI method, the corrugated base paper is cut into A4 paper patterns, and then dried to a constant moisture content;

[0158] (2) Get starch and put it in a beaker, add water to 8% starch content, then heat to 100°C, add potassium persulfate and cook for 60 minutes under mechani...

Embodiment 3

[0170] Example 3 Application of Synthetic Layered Silicate Mineral Soil to Replace Part of Surface Gluten Starch in OCC Corrugated Paper Production

[0171] 1. Materials:

[0172] The starch is cassava starch, provided by Dongguan Perfect Starch Co., Ltd.; the base paper is taken from Dongguan Tomorrow Paper Co., Ltd., obtained from the surface rubber machine when the paper machine breaks, and it is corrugated paper produced by 100% OCC national waste; synthetic layered The chemical structure analysis results of the silicate (sample A) product are shown in Table 2.

[0173] 2. The steps of the surface sizing method are as follows:

[0174] (1) According to the TAPPI method, the corrugated base paper is cut into A4 paper patterns, and then dried to a constant moisture content;

[0175] (2) Get starch and put it in a beaker, add water to 8% starch content, then heat to 100°C, add potassium persulfate and cook for 60 minutes under mechanical stirring at 1000RPM;

[0176] (3) P...

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Abstract

The invention discloses a surface sizing agent for papermaking, and a papermaking method for improving paper strength and water resistance. An active component of the surface sizing agent is prepared by a polymer polysaccharide compound and phyllosilicate in a weight ratio of 99.5-5:0.5-95. The papermaking method includes: preparing water-containing fiber papermaking pulp, an aqueous solution of the polymer polysaccharide compound, and a phyllosilicate-containing colloid solution or dispersion, mixing the phyllosilicate-containing colloid solution or dispersion and the aqueous solution of the polymer polysaccharide compound to obtain a surface sizing solution, feeding the water-containing fiber papermaking pulp onto a screen, filtering water to form paper sheets, allowing the paper sheets to pass through a dehydration process and a drying process to obtain base paper, coating the surfaces of the base paper with the surface sizing solution to obtain sized paper sheets, and drying. By using the surface sizing agent to papermaking, tensile strength and compression strength of the prepared paper are obviously enhanced, water-resistant and moisture resistant capabilities are largely improved, and the using amount of traditional chemical sizing agents is obviously reduced.

Description

technical field [0001] The invention relates to the field of papermaking, in particular to a surface sizing agent for papermaking and a papermaking method for improving paper strength and water resistance. Background technique [0002] Containerboard and corrugated paper are mainly used in the packaging industry and are the two most consumed paper products in China. Among the 99.3 million tons of paper and paperboard output in China in 2011, containerboard and corrugated paper accounted for 21.3% and 20.4% respectively, or 41.7% of the total. Due to the shortage of pulp raw materials, most of the enterprises producing containerboard and corrugated base paper in China use waste cartons for production. However, the paper produced by China's repeatedly reused waste paper raw materials is low in strength and poor in quality. In order to meet the needs of users for paper strength and other properties, general paper companies use surface sizing to improve various performance indi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H21/16D21H21/18D21H19/40D21H19/54D21H19/44C08L3/02C08L1/02C08L5/06C08L5/08C08L5/00C08L5/12
Inventor 王祥槐邓渝林彭元兴
Owner RISINGSTAR BIOTECH GUANGZHOU
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