Sketch paper papermaking process

A technology for crafting and sketching, which is applied in the field of papermaking craftsmanship of sketching paper, can solve the problems of undisclosed bulk thickness and strength index of paper, affecting sketching effect, and easy to lose powder and hair on the surface of paper, so as to achieve good effect of pencil writing and lead. Good surface texture and good hand feel

Inactive Publication Date: 2020-03-13
WEIFANG HENGLIAN SPECIALTY PAPER
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0003] Invention patent CN201910436219.9 provides a method for manufacturing high-ratio mechanical pulp sketch paper, in which the proportion of chemical-mechanical pulp is as high as 80-90%. At the same time, by adding auxiliary materials in the sizing system, the sketch paper B4 pencil line can be improved. lead rate, enhance the friction resistance of the eraser, but it does not disclose the bulk thickness and strength index of the paper. Usually, adding a large amount of chemical-mechanical pulp will increase the bulk thickness but reduce its surface strength. When using The surface of the paper is easy to lose powder and hair, which will affect the sketch effect

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0027] Embodiment 1 A kind of sketch paper papermaking process

[0028] The production steps include: pulping, mixing pulp, pressing, dehydration and drying, preparation of surface glue, sizing, post-drying, and cutting. The specific steps are as follows:

[0029] 1. Pulping

[0030] (1) Preparation of softwood pulp: the bleached kraft softwood pulp with a fiber length of 2.52mm and an ISO brightness of 87% is pulverized by a hydraulic pulper, transferred to the knocking pool, and passed through two φ508 double disc mills Beater, and controlled beating power is 120kwh, beating concentration is 4.2%, beating degree is 22 ° SR, transfers to coniferous wood knocking pool, makes coniferous wood pulp;

[0031] (2) Preparation of chemical-mechanical pulp: crush the chemical-mechanical pulp with a fiber length of 0.81mm and an ISO whiteness of 75% through a hydraulic pulper, transfer it to the knocking pool, and pass through a φ508 double-disc mill beater , without pressing knife, ...

Embodiment 2

[0053] Embodiment 2 A kind of sketch paper making process

[0054] 1. Pulping

[0055](1) Preparation of softwood pulp: Bleached kraft softwood pulp with a fiber length of 2.55mm and an ISO brightness of 86% was pulverized by a hydraulic pulper, transferred to the knocking pool, and passed through two φ508 double disc mills Beater, and control beating power is 120kwh, beating concentration is 4.4%, beating degree is 23 ° SR, transfers to coniferous wood knocking pool, makes coniferous wood pulp;

[0056] (2) Preparation of chemical-mechanical pulp: the chemical-mechanical pulp with a fiber length of 0.88mm and an ISO whiteness of 75% is pulverized by a hydraulic pulper, transferred to the knocking pool, and passed through a φ508 double-disc mill beater , without pressing knife, the beating concentration is 4.0%, the beating degree is 23 ° SR, without fiber bundles, it is transferred to the pool after knocking, and the chemical-mechanical pulp slurry is obtained;

[0057] 2. ...

Embodiment 3

[0077] Embodiment 3 A kind of sketch paper making process

[0078] 1. Pulping

[0079] (1) Preparation of softwood pulp: Bleached kraft softwood pulp with a fiber length of 2.55mm and an ISO brightness of 86% was pulverized by a hydraulic pulper, transferred to the knocking pool, and passed through two φ508 double disc mills Beater, and controlled beating power is 120kwh, beating concentration is 4.4%, beating degree is 21 ° SR, transfers to coniferous wood knocking pool, makes coniferous wood pulp;

[0080] (2) Preparation of chemical-mechanical pulp: the chemical-mechanical pulp with a fiber length of 0.8mm and an ISO whiteness of 75% is pulverized by a hydraulic pulper, transferred to the knocking pool, and passed through a φ508 double-disc mill beater , without pressing knife, the beating concentration is 4.0%, the beating degree is 21 ° SR, without fiber bundles, it is transferred to the pool after knocking, and the chemical mechanical pulp slurry is obtained;

[0081] ...

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Abstract

The invention provides a sketch paper papermaking process. The sketch paper papermaking process comprises the following steps: pulping, mixing and pulping, squeezing, dehydrating and drying, preparinga surface glue solution, gluing and drying; in the pulping process, bleached sulfate softwood pulp and chemi-mechanical pulp are adopted as raw materials, the proportion of the two kinds of pulp is reasonably controlled, light pulping is conducted, a wet strength agent and a sizing agent are properly applied, the pressure of a squeezing part is controlled, the sizing amount, the water content andother parameters are controlled, finally, the surface strength of the prepared sketch paper reaches 10-11 # wax rod, and hair falling and powder falling are avoided in the using process. The finishedpaper bulk reaches 1.89-1.96 cm<3>/g, the thickness is high, the mass is light, and the use hand feeling is good; the surface texture is good, the smoothness is low, and the pencil writing lead effect is good.

Description

technical field [0001] The invention belongs to the technical field of papermaking, and in particular relates to a sketch paper making process. Background technique [0002] Sketch is a painting method that uses monochrome or simple color tools to describe the outline, volume, structure, space, light, texture and other basic modeling elements of an object. The sketches we can see today were developed from the early German folk woodcut prints. This kind of folk painting, which was popular in Germany in the early years, is similar to Chinese line drawing. At first, it was just some prints of religious themes in folk workshops, and then it was widely circulated among the people, but it did not exist as an independent artistic expression at that time. It was not until the Renaissance in the 15th century that people discovered its unique expressive charm. During this period, Italian painters Massaccio, Leonardo Da Vinci, Michelangelo and others invented and applied the principl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21F11/00D21H11/02D21H11/04D21H21/20D21H21/16D21H17/17D21H17/55D21H19/10D21H17/28
CPCD21F11/00D21H11/02D21H11/04D21H17/17D21H17/28D21H17/55D21H19/10D21H21/16D21H21/20
Inventor 汤志久杨振永刘栋栋任怀燕马炳英王彦刘海明葛树伟
Owner WEIFANG HENGLIAN SPECIALTY PAPER
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