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Ultra-low basis weight corrugating base paper and preparation method thereof

A corrugated base paper, ultra-low technology, applied in papermaking, paper machine, paper recycling, etc., can solve the problems of flow system pollution, inability to continuously produce low-gram weight corrugated base paper products, etc.

Inactive Publication Date: 2021-10-08
广州造纸股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The reason why the existing corrugated base paper cannot break through 40g / m 2 The reasons are, firstly, the mainstream choice of corrugated base paper contains OCC in the fiber raw materials, and the pulping process is still not fine enough to remove the stickies in OCC, these substances will adhere to a large amount of stickies in the paper machine flow delivery system, due to The flow conveying system has high requirements on the polished surface of the inner wall. It is difficult to remove these stickies without damaging the inner wall, causing irreversible pollution to the flow conveying system. The surface precipitates and sticks to paper, which makes the production unable to continuously produce low-gram weight corrugated base paper products

Method used

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  • Ultra-low basis weight corrugating base paper and preparation method thereof
  • Ultra-low basis weight corrugating base paper and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0039]Corrugated base paper is made of 500 kg of imported American waste 8#, 200 kg of European waste A9, 100 kg of Daolin paper in Hong Kong, 150 kg of old newspapers in Hong Kong, and 50 kg of European 37# waste paper The obtained deinked pulp (1000 kilograms of total air-dried weight), according to the above-mentioned corrugated pulp preparation process and corrugated base paper preparation process, added 10-15kg AKD sizing agent, Jiangsu Fumiao retention aid VG727 200g in the sizing process.

[0040] Prepared 40g / m 2 The paper break length of corrugated base paper is 5KM, and the water absorption value of the paper is 30g / m 2 , the water contained in the paper is 7.5%, and the tightness is 0.58g / cm 2 , burst index 1.6kPa m 2 / g.

Embodiment 2

[0042] Corrugated base paper is deinked pulp made from 150 kg air-dried old newspapers in the Mainland, 500 kg air-dried mixed office waste paper in the Mainland, 50 kg air-dried Daolin paper in Hong Kong, China, and 100 kg air-dried old newspapers in Hong Kong, China (air-dried 800kg), chemical-mechanical pulp (200 kg of air-dried weight), according to the above-mentioned corrugated pulp preparation process and corrugated base paper preparation process, add 10-15kg AKD sizing agent in the sizing process, Jiangsu Fumiao retention aid VG727 200g, suitable Ryan cationic starch 880L 3kg, Pacific Chemical Company fixative PPT-400 600g.

[0043] Prepared 40g / m 2 The paper break length of corrugated base paper is 5.2KM, and the water absorption value of the paper is 25g / m 2 , the water contained in the paper is 7%, and the tightness is 0.54g / cm 2 , burst index 1.8kPa m 2 / g.

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Abstract

The invention belongs to the technical field of paper product preparation, and particularly discloses ultra-low basis weight corrugating base paper and a preparation method thereof. The quantitative bottleneck of 40g / m<2> corrugating base paper is broken through, so that the application area of a corrugated board can be increased by 1.2 times or more than 1.2 times under the condition that the ring crush compression resistance index of the product still reaches the standard compared with that of similar products under the condition of the same weight. Compared with the disclosed finished paper, the corrugated base paper obtained by the invention has the advantages that the quality is better, the water absorption value is below 30g / m<2>, the longitudinal fracture length is greater than 5km, the requirement of a high-speed newsprint machine for producing the paper can be met, and the production efficiency can still be kept not to be reduced to an uneconomic industrial standard, namely the normal daily production time is kept for 22.5 hours or more.

Description

technical field [0001] The invention belongs to the technical field of paper product preparation, and in particular relates to an ultra-low weight corrugated base paper and a preparation method thereof. Background technique [0002] Corrugated base paper or corrugated core paper refers to the wave-shaped paper processed by corrugated sticks in the middle of corrugated cardboard. It needs to have better stiffness, ring compressive strength index, and fit adaptability. It is made into roll paper by paper mills. Or when the form of flat paper is handed over to the corrugated cardboard factory for processing, it mainly bears the pressure and shock resistance in the middle of the corrugated cardboard. If the required ring compressive strength index can be achieved, the paper with a smaller weight can be used in the same weight. Corrugated cardboard with a larger area is more favored by corrugated cardboard manufacturers. For paper mills, if they want to produce corrugated base pa...

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): D21F11/12D21B1/32D21B1/34
CPCD21F11/12D21B1/327D21B1/345Y02W30/64
Inventor 祁红影刘文波许志愿林宗宁陈建兵王云卓区礼涛
Owner 广州造纸股份有限公司
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