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Method for applying starch modified stuffing in paper making

An application method and starch modification technology, applied in the field of papermaking, can solve the problems of increasing factory investment risks and costs, and achieve the effects of improving water filtration performance, improving paper strength, and reducing loss rate

Inactive Publication Date: 2009-11-04
GOLD EAST PAPER JIANGSU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The traditional starch gel filler treatment technology needs to be processed by mixed cooking, drying treatment, grinding and dispersing before it can be truly applied, which increases the investment risk and cost of the factory

Method used

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  • Method for applying starch modified stuffing in paper making

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] First, weigh 80 g of dry corn oxidized starch, add water to 400 g, and make 20% starch concentration. After fully stirring evenly, place the emulsion in a heating bag with a temperature control system to increase the temperature, fully cook and stir, and react at 95°C for 20 minutes.

[0023] Secondly, the above-mentioned starch and heavy calcium carbonate C65 were formulated into a coating according to the ratio of 40:60, and dispersed in a high-speed disperser at 3000 R / min for 20 minutes. The solid content of the dispersed paint is about 50%, and the viscosity is about 800cps. Then use 80g / m 2 The base paper, the control coating amount is 60g / m 2 Left and right, evenly coat and dry in the coater for later use. Again, weigh 50g of foamed pulp from the spare coated paper, and evenly disperse the pulp in a pulper for 5 minutes, and set aside.

Embodiment 2

[0025] First take by weighing 160g of absolute dry tapioca oxidized starch, add water to 400g, make 40% starch concentration. After fully stirring evenly, place the emulsion in a heating bag with a temperature control system to increase the temperature, fully cook and stir, and react at 95°C for 20 minutes.

[0026] Secondly, the above-mentioned starch and heavy calcium carbonate C65 were formulated into a coating according to the ratio of 30:70, and dispersed in a high-speed disperser at 3000 R / min for 20 minutes. The solid content of the dispersed paint is about 50%, and the viscosity is about 800cps. Then use 80g / m 2 The base paper, the control coating amount is 60g / m 2 Left and right, evenly coat and dry in the coater for later use. Again, weigh 50g of foamed pulp from the spare coated paper, and evenly disperse the pulp in a pulper for 5 minutes, and set aside.

[0027] Finally, the above-mentioned paper stock was applied to the handsheet with an addition amount of 10...

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Abstract

The invention discloses a method for applying starch modified stuffing in paper making, which comprises the following steps: firstly, mixing cooked oxidized starch and stuffing to prepare a coating, evenly coating the coating on the surface of paper, then drying the paper, and breaking and scattering the coated paper to replace partial pulp to be added into a paper making system. The surface of the modified stuffing is wrapped by the starch, so the dissolution phenomenon does not occur under the water temperature condition of a paper machine system, the loss amount of the stuffing in a white water system is reduced, the combination capabilities between the fibers and between the fiber and the stuffing are increased when the stuffing is added into the paper, the drainage property of a system is improved, and the production cost is lowered.

Description

technical field [0001] The invention belongs to the field of papermaking, in particular to an application method of starch modified filler in papermaking. Background technique [0002] In paper, the main component of paper is fiber, but the cost of fiber is relatively high, so fillers are added to paper to reduce the production cost of paper, and fillers can also improve the smoothness, whiteness, opacity, etc. of paper. [0003] Of course, for paper, the more fillers are added, the lower the cost, which is what paper mills and paper researchers are pursuing. However, there is also a certain limit to the amount of paper filler added. When the amount of filler reaches a certain level, if the amount is increased, the cohesive force and tensile strength of the paper will decrease significantly, and even obvious creases and bursts will appear. . [0004] Research on the modification technology of fillers, how to apply fillers to paper better and more, and at the same time impr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H23/04D21H17/69D21H17/29
Inventor 王仁荣张明邓升鸿
Owner GOLD EAST PAPER JIANGSU
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