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Preparation method of semigloss art paper

A copper plate, matte technology, applied in the papermaking field, can solve problems such as affecting the operation of the machine, rough paper on both sides, and light spots on the finished paper.

Inactive Publication Date: 2018-11-23
HAINAN JINHAI PULP & PAPER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The inventor found in the process of producing high-weight matt coated paper that the thickness of the coated paper exceeds the maximum pulp flow rate of the paper machine, and the paper web is prone to edge breaking and paper breaking in the wire press section, which seriously affects the operation of the machine (one edge breaking It takes 90 minutes to make paper, and the loss is about 600,000 yuan), and there are light spots on the paper, and rough paper on both sides. Therefore, a new process is urgently needed, which can not only improve the operating efficiency of the paper machine, reduce costs, but also produce high-quality Matt coated paper

Method used

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Examples

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Effect test

Embodiment 1

[0032] A preparation method of matte coated paper, comprising the following steps:

[0033] S1: Take kraft softwood pulp, bleached kraft hardwood pulp and bleached chemical thermomechanical pulp, and mix them at a weight ratio of 30:35:35 to form a slurry mixture;

[0034] S2: Add ground calcium carbonate and positive starch to the slurry mixture in step S1, and mix thoroughly to obtain base paper pulp;

[0035] S3: Use the base paper pulp obtained in step S2 to produce base paper, and the base paper produced is quantitatively 220g / m 2 , wherein the water content is 5%;

[0036] S4: Sizing the surface of the base paper obtained in step S3; the sizing glue is starch glue, and the starch glue is composed of tapioca starch or corn starch obtained after oxidation or enzymatic digestion.

[0037] S5: On the basis of step S4, use film transfer coating for primer coating, the solid content of the coating is 68%, the shear viscosity is 600cps, and when the total grammage of paper is...

Embodiment 2

[0049] A preparation method of matte coated paper, comprising the following steps:

[0050] S1: Take kraft softwood pulp, bleached kraft hardwood pulp and bleached chemical thermomechanical pulp, and mix them at a weight ratio of 40:45:15 to form a slurry mixture;

[0051]S2: Add ground calcium carbonate and positive starch to the slurry mixture in step S1, and mix thoroughly to obtain base paper pulp;

[0052] S3: Use the base paper pulp obtained in step S2 to produce base paper, and the base paper produced is quantitatively 180g / m 2 , wherein the water content is 7%;

[0053] S4: Sizing the surface of the base paper obtained in step S3; the sizing glue is starch glue, and the starch glue is composed of tapioca starch or corn starch obtained after oxidation or enzymatic digestion.

[0054] S5: On the basis of step S4, use film transfer coating for primer coating, the solid content of the coating is 70%, the shear viscosity is 400cps, and when the total grammage of paper is ...

Embodiment 3

[0063] A preparation method of matte coated paper, comprising the following steps:

[0064] S1: Take kraft softwood pulp, bleached kraft hardwood pulp and bleached chemical thermomechanical pulp, and mix them at a weight ratio of 35:43:22 to form a slurry mixture;

[0065] S2: Add ground calcium carbonate and positive starch to the slurry mixture in step S1, and mix thoroughly to obtain base paper pulp;

[0066] S3: Use the base paper pulp obtained in step S2 to produce base paper, and the base paper produced is quantitatively 199g / m 2 , wherein the water content is 7%;

[0067] S4: Sizing the surface of the base paper obtained in step S3; the sizing glue is starch glue, and the starch glue is composed of tapioca starch or corn starch obtained after oxidation or enzymatic digestion.

[0068] S5: On the basis of step S4, use film transfer coating for primer coating, the solid content of the coating is 70%, the shear viscosity is 400cps, and when the total grammage of paper is...

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Abstract

The invention discloses a preparation method of semigloss art paper. Sulfate softwood pulp, bleached sulfate hardwood pulp, bleached chemical hot-grinding mechanical pulp, ground calcium carbonate andpositive starch are used for raw paper, the reasonable proportion and properties, such as formation and surface structure, of the raw paper are strictly controlled, and the basis is provided for production of high-quality semigloss art paper. According to the method, different raw material proportions are adopted for bottom coating, middle coating and face coating, three glue application technologies are reasonably controlled, the paper face keeps the reasonable microcosmic roughness, and the reasonable luster contrast is achieved. By further strictly controlling the production technology, through the scheme, the operation loss and cost of a paper machine are reduced, edge floating paper breaking does not occur to a papermaking net part of 300 gsm, after paper formation and press, the thickness is 275-295 microns, the folding endurance (time) MD is larger than and equal to 4, the roughness is smaller than or equal to 2.54, the lustrousness is 22-29%, the lustrousness after printing is66-76%, the lustrousness contrast is 41-49%, and light spots do not occur.

Description

technical field [0001] The invention relates to the technical field of papermaking, in particular to a method for preparing high-weight matte coated paper. Background technique [0002] Matte coated paper, also known as matt coated paper or matte powder paper, is mainly used to produce high-end books, picture albums, commercial advertisements and other printed materials. Matte coated paper has low gloss and is not dazzling. The printed matter is bright in color and has a strong three-dimensional effect, which is favored by consumers. At present, the development trend of the matt coated paper market is to have a better surface feel, better bulk, and higher printing quality, but at the same time, the production cost of the paper should be lower. The inventor found in the process of producing high-weight matt coated paper that the thickness of the coated paper exceeds the maximum pulp flow rate of the paper machine, and the paper web is prone to edge breaking and paper breakin...

Claims

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Application Information

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IPC IPC(8): D21F11/00D21H17/67D21H21/08D21H21/14D21H21/16D21H23/34D21H27/00
CPCD21F11/00D21H17/675D21H21/08D21H21/14D21H21/16D21H23/34D21H27/00
Inventor 蔡亮余立宁
Owner HAINAN JINHAI PULP & PAPER
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