Manufacturing method of fireproof board core paper

A manufacturing method and fireproof board technology, which is applied in the field of papermaking, can solve problems affecting the quality and production cost of fireproof boards, complex paper sources for fireproof board core paper, and uneven quality indicators, so as to achieve no impurities in appearance, improve fiber distribution, good evenness

Inactive Publication Date: 2020-11-20
YUEYANG FOREST & PAPER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The high-end products of fireproof board core paper in the domestic market are mainly imported products from European and American companies, which have disadvantages such as high price and poor supply guarantee, which affect the stability of fireproof board quality and production cost; while domestic fireproof board core paper exists The source of paper is complex and the quality indicators are uneven, so it cannot be used for the processing of high-end refractory boards. In order to replace similar imported products, we choose all-virgin wood pulp as the research and development target

Method used

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  • Manufacturing method of fireproof board core paper

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Mix 13.5 tons of pine chips, 10.8 tons of hardwood chips, and 2.7 tons of camphor wood, and use 75m 3 Vertical pot kraft batch cooking, add Leishi 6873 cooking aid to the cooking liquid at a rate of 0.375kg / t dry wood chips to obtain 60 tons of chemical wood pulp, the amount of alkali used is 2900kg / pot, and the cooking liquid ratio is 1 : 3.8, kappa value is 38, residual alkali is controlled at ≤ 200mg / l, and then undergoes oxygen delignification and hydrogen peroxide slight bleaching until the pulp whiteness is 35.5% ISO, after washing, light beating and grinding The type adopts fin-shaped tooth type, the beating concentration is 4.5%, and the beating degree is controlled at 16.5°SR. When beating, 0.9kg / t pulp compound beating enzyme and 12.5kg / t pulp sponge particles are added. The particle size of the sponge particles is 0.05-0.1 mm; The slurry obtained after beating is fully mixed into 3.5% pulp in the pulp mixing tank, and 2.5kg / t paper 2056 water-absorbing agent ...

Embodiment 2

[0026] Mix 14.0 tons of pine chips, 11.0 tons of hardwood chips, and 3.0 tons of camphor wood, and use 75m 3Vertical pot kraft method batch cooking, adding Leishi 6873 cooking aid to the cooking liquid at a rate of 0.375kg / t dry wood chips to obtain 50 tons of chemical wood pulp, the amount of alkali used is 3000kg / pot, and the cooking liquid ratio is 1 : 3.5, kappa value is 43, residual alkali is controlled at ≤ 200mg / l, then oxygen delignification, hydrogen peroxide bleaching until pulp whiteness is 36% ISO, after washing, light beating, grinding teeth The fin-shaped tooth type is adopted, the beating concentration is 5.0%, and the beating degree is controlled at 20°SR. When beating, 0.7kg / t pulp compound beating enzyme and 15.8kg / t pulp sponge particles are added. The particle size of the sponge particles is 0.05-0.1 mm; The slurry obtained after beating is fully mixed into 3.6% pulp in the pulp mixing tank, and 2056 water-absorbing agent of 2kg / t paper is added at the outl...

Embodiment 3

[0028] Mix 11.25 tons of pine chips, 7.5 tons of hardwood chips, and 2.5 tons of camphor wood, and use 75m 3 Vertical pot kraft batch cooking, adding Leishi 6873 cooking aid to the cooking liquid at a rate of 0.375kg / t dry wood chips to obtain 45 tons of chemical wood pulp, the amount of alkali used is 2950kg / pot, and the cooking liquid ratio is 1 : 3.7, kappa value is 35, residual alkali is controlled at ≤200mg / l, and then undergoes oxygen delignification and hydrogen peroxide slight bleaching until the pulp whiteness is 34% ISO, after washing, light beating and grinding The type adopts fin-shaped tooth type, the beating concentration is 5.5%, and the beating degree is controlled at 16°SR. When beating, 0.6kg / t pulp compound beating enzyme and 14.0kg / t pulp sponge particles are added. The particle size of the sponge particles is 0.05-0.1 mm; The slurry obtained after beating is fully mixed into 4.0% pulp in the pulp mixing tank, and 2056 water-absorbing agent of 3kg / t paper i...

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Abstract

The invention discloses a manufacturing method of a fireproof board core paper. The invention belongs to the technical field of papermaking, needle-leaved wood, broad-leaved wood and camphorwood are used as fiber raw materials, the preparation method comprises the following steps: cooking, extracting, performing oxygen delignification, performing hydrogen peroxide micro-bleaching, washing, pulping, preparing pulp, slushing, screening and purifying, sizing, dehydrating and forming a net part, squeezing, performing pre-drying, performing surface sizing, performing post-drying, coiling, rewindingand packaging, wherein the ratio of the needle-leaved wood to the broad-leaved wood to the camphorwood is (4.5-5): (3-4): 1. The fireproof board core paper manufactured through the method is good inuniformity, stable in quantification, consistent in tightness, smooth in paper surface, good in laminating performance, free of impurities on the appearance of the paper surface and free of lint on the end face, and the flame retardant property and the sound insulation property of the core paper are improved simultaneously.

Description

technical field [0001] The invention belongs to the technical field of papermaking, and in particular relates to a method for manufacturing fireproof board core paper. Background technique [0002] With the improvement of national living standards in our country, the construction industry market is constantly increasing. People have higher and more environmentally friendly requirements for the quality of materials in the fields of home interior decoration, furniture, kitchen cabinets, laboratory countertops, and exterior walls. It is required to be both beautiful and environmentally friendly and durable. With the maturity of technology in recent years, functional paper or cardboard has been developed and applied to decorative materials. Because the finished fireproof board made of paper or cardboard is superior to wood chips and cheaper than solid wood, and is used in After decorating the panel surface, the effect is high-end and beautiful. It can be a good substitute for wo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H27/00D21H11/04D21C3/02D21C3/22D21C9/16D21H17/00D21H17/55D21H21/12D21H21/36D21H17/66D21C9/147D21H21/14
CPCD21H27/00D21H11/04D21C3/022D21C3/222D21C9/163D21H17/005D21H17/55D21H21/12D21H21/36D21H17/66D21C9/147D21H21/14
Inventor 何江林史梦华吴恒刘春景李丹
Owner YUEYANG FOREST & PAPER CO LTD
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