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Method for increasing retention rate of calcium carbonate in paper-making reconstituted tobacco

A technology of reconstituted tobacco leaves and calcium carbonate, which is applied in the fields of tobacco, tobacco preparation, application, etc., to achieve the effects of good combustibility, loose base of reconstituted tobacco leaves by papermaking method, and high filling value

Inactive Publication Date: 2015-10-07
CHONGQING CHINA TOBACCO IND CO LTD +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] In order to overcome the defects in the existing methods of using calcium carbonate in the production process of reconstituted tobacco leaves by the existing papermaking method, the technical problem to be solved by the present invention provides a method to first absorb calcium carbonate through wood pulp fiber slurry to form a composite, and then combine carboxymethyl fiber Coating and modifying the compound with element, and finally improving the effective retention rate of calcium carbonate in papermaking reconstituted tobacco leaves with the help of multiple retention aid rate system

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] Step A: Disintegrating natural softwood wood pulp fibers, and preparing wood pulp fiber slurry with a beating degree of 50°SR and a pulp concentration of 10% through a refiner; wherein the solid-to-liquid ratio of the disintegrated wood pulp fibers is 1:8;

[0065] Step B: prepare a calcium carbonate solution with a concentration of 2.0%, and set aside;

[0066] Step C: Take 20% wood pulp fiber slurry relative to the calcium carbonate mass and add it to the calcium carbonate solution in step B, and stir at a temperature of 50° C. at a stirring frequency of 280 rpm for 30 minutes to obtain a calcium carbonate and wood pulp fiber slurry composite;

[0067] Step D: Add 3% carboxymethyl cellulose relative to the quality of calcium carbonate to the calcium carbonate and wood pulp fiber slurry composite of step C, then stir for 30 minutes at a temperature of 50° C. and a stirring frequency of 280 rpm to obtain carboxymethyl A cellulose-based coated calcium carbonate and wood ...

Embodiment 2

[0076] Step A: Disintegrate the uncolored hardwood pulp fiber, and prepare a wood pulp fiber slurry with a beating degree of 65°SR and a pulp concentration of 20% through a refiner; wherein the solid-to-liquid ratio of the disintegrated wood pulp fiber is 1:6;

[0077] Step B: prepare a calcium carbonate solution with a concentration of 3.0%, and set aside;

[0078] Step C: Take 30% of the wood pulp fiber slurry relative to the calcium carbonate mass and add it to the calcium carbonate solution in step B and stir for 40 minutes at a temperature of 40° C. and a stirring frequency of 300 rpm to obtain a calcium carbonate and wood pulp fiber slurry composite;

[0079] Step D: Add 7% carboxymethyl cellulose relative to the quality of calcium carbonate to the calcium carbonate and wood pulp fiber slurry composite of step C, then stir for 35 minutes at a temperature of 40° C. and a stirring frequency of 300 rpm to obtain carboxymethyl A cellulose-based coated calcium carbonate and woo...

Embodiment 3

[0088] Step A: Disintegrate the bleached softwood pulp fiber, and prepare a wood pulp fiber slurry with a beating degree of 75°SR and a pulp concentration of 30% through a refiner; wherein the solid-to-liquid ratio of the disintegrated wood pulp fiber is 1:8;

[0089] Step B: preparing a calcium carbonate solution with a concentration of 4.5%, for subsequent use;

[0090] Step C: taking 40% wood pulp fiber slurry relative to the calcium carbonate mass, adding it to the calcium carbonate solution in step B and stirring at a temperature of 30° C. at a stirring frequency of 350 rpm for 25 minutes to obtain a calcium carbonate and wood pulp fiber slurry composite;

[0091] Step D: Add 9% carboxymethyl cellulose relative to the quality of calcium carbonate to the calcium carbonate and wood pulp fiber slurry composite of step C, then stir for 30 minutes at a temperature of 30° C. and a stirring frequency of 350 rpm to obtain carboxymethyl cellulose A cellulose-based coated calcium c...

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Abstract

The invention relates to a method for increasing a retention rate of calcium carbonate in paper-making reconstituted tobacco. The method comprises the steps that the calcium carbonate is added into a wood pulp fiber sizing agent with a certain beating degree to enable the calcium carbonate and the wood pulp fiber sizing agent to be fully adsorbed to form a compound; the compound is wrapped by carboxymethylcellulose to form a larger flocculation body; modification and stability treatment are performed on the surface of the flocculation body by aluminum sulfate; the modified calcium carbonate and a tobacco sizing agent are mixed with the help of a multi-element composite retention and drainage system and then processed into the reconstituted tobacco through papermaking, squeezing, coating, drying and slitting. By means of the method for increasing the retention rate of the calcium carbonate in the paper-making reconstituted tobacco, the binding force of the modified calcium carbonate and the sizing agent is enhanced, the modified calcium carbonate and the sizing agent are not likely to run off, and the retention rate of the modified calcium carbonate in the reconstituted tobacco is high.

Description

【Technical field】 [0001] The invention belongs to tobacco processing technology and relates to the field of reconstituted tobacco leaf production by papermaking method. It is a method of firstly using wood pulp fiber slurry to absorb calcium carbonate to form a compound, and then combining carboxymethyl cellulose to coat and modify the compound. A method for improving the effective retention rate of calcium carbonate in reconstituted tobacco leaves by the papermaking method by using a multiple retention aid rate system. 【Background technique】 [0002] Reconstituted tobacco leaves are also known as reconstituted tobacco leaves, tobacco flakes, homogeneous tobacco leaves, etc. Foreign countries began to study the use of paper-making reconstituted tobacco leaves in the middle of the last century. The domestic paper-making reconstituted tobacco industry developed and started relatively late, but the development speed and technological progress were relatively fast. It has a str...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A24B3/14
CPCA24B3/14
Inventor 薛长森俞海军迟建国徐利赵德清高颖方军
Owner CHONGQING CHINA TOBACCO IND CO LTD
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