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High-bulk coating white cardboard and production process thereof

A cloth white cardboard, production process technology, applied in the direction of paper/cardboard layered products, paper, papermaking, etc., can solve problems such as stiffness, low bulk, cardboard folding, foaming and delamination, unfavorable printing or packaging effects, etc. , achieve the effects of clear dots, increased paper thickness, and no creases and bursts

Active Publication Date: 2012-06-27
ZHUHAI HUAFENG PAPER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the stiffness and bulk of the existing coated white cardboard are still low, and the increase in bulk will cause the cardboard to be prone to folding, blistering and delamination, which is not conducive to improving the printing or packaging effect.

Method used

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  • High-bulk coating white cardboard and production process thereof
  • High-bulk coating white cardboard and production process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] 230g / m 2 High bulk coated white cardboard with white background:

[0035] 1) Pulping:

[0036] Flour: use 25wt% coniferous chemical kraft pulp NBKP, 75wt% broadleaf chemical kraft pulp LBKP; the pulp is pulped, refined, and wet-end chemicals without fillers and AKD are added to make noodles pulp;

[0037] Core pulp: 70wt% eucalyptus chemical-mechanical pulp BCTMP, 30wt% birch chemical-mechanical pulp BCTMP; after pulping and refining, add 4kg / ton pulp of AKD and other wet-end chemicals without fillers, Prepare the core pulp;

[0038] Bottom pulp: use 25wt% softwood chemical kraft pulp NBKP, 75wt% broadleaf chemical kraft pulp LBKP; the pulp is pulped, refined, and wet-end chemicals without fillers and AKD are added to make bottom pulp;

[0039] 2) Preparation of base paper:

[0040] The water filtration vacuum of the high vacuum box of the core mesh is -0.25bar, and the quantitative value of the surface layer is 30 g / m 2 , core weight 135g / m 2 , bottom layer qua...

Embodiment 2

[0048] 370g / m 2 High bulk coated white cardboard with white background:

[0049] 1) Pulping:

[0050] Flour: use 30wt% coniferous wood chemical kraft pulp NBKP, 70wt% hardwood chemical kraft pulp NBKP; the pulp is pulped, refined, and wet-end chemicals without fillers and AKD are added to make the flour pulp;

[0051] Core pulp: 75wt% eucalyptus chemical mechanical pulp BCTMP, 25wt% spruce chemical mechanical pulp BCTMP; the pulp is pulped and refined, and 5kg of AKD and other wet-end chemicals without fillers are added. Core pulp;

[0052] Base stock: use 35wt% coniferous wood chemical kraft pulp NBKP, 65wt% hardwood chemical kraft pulp NBKP; the pulp is pulped, refined, and wet-end chemicals without fillers and AKD are added to prepare the base stock.

[0053] 2) Preparation of base paper:

[0054] The water filtration vacuum of the high vacuum box of the core mesh is -0.3bar, and the quantitative value of the surface layer is 34 g / m 2 , core weight 263 g / m 2 , bot...

Embodiment 3

[0062] 330 g / m 2 High bulk coated white cardboard with white background:

[0063] 1) Pulping:

[0064] Flour: use 35wt% coniferous wood chemical kraft pulp NBKP, 65wt% hardwood chemical kraft pulp NBKP; the pulp is pulped, refined, and wet-end chemicals without fillers and AKD are added to make the flour pulp;

[0065] Core pulp: adopt 50wt% maple chemical mechanical pulp BCTMP, 50wt% spruce chemical mechanical pulp BCTMP; the pulp is pulped and refined, and 5kg / ton of pulp is added with AKD and other wet-end chemicals without fillers. core pulp;

[0066] Base stock: use 30wt% coniferous wood chemical kraft pulp NBKP, 70wt% hardwood chemical kraft pulp NBKP; the pulp is pulped, refined, and wet-end chemicals without fillers and AKD are added to prepare the base stock.

[0067] 2) Preparation of base paper:

[0068] The water filtration vacuum of the high vacuum box of the core mesh is -0.33bar, and the surface weight is 26 g / m 2 , core weight 232g / m 2 , bottom layer ...

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Abstract

The invention discloses a high-bulk coating white cardboard and a production process thereof. The high-bulk coating white cardboard comprises a surface layer, a core layer and a bottom layer, wherein the surface layer and the bottom layer respectively contain 25-35 percent by weight of needlebush chemical sulfate pulp; the core layer contains 50-75 percent by weight of eucalyptus or / and maple chemical mechanical pulp; the fixed quantity of the surface layer is 26-34g / m<2>; and the fixed quantity of the bottom layer is 25-32g / m<2>. The bulk of the high-bulk coating white cardboard with white background can reach as high as 1.59-1.79cm<3> / g. The bulk of the high-bulk coating white cardboard with yellow background can reach as high as 1.61-1.75cm<3> / g. The high-bulk coating white cardboard disclosed by the invention is high in stiffness, so that the physical strength and the compressible performance of the packaging cardboard are greatly improved; due to the excellent thickness and stiffness, the service cost of customers can be reduced to the maximum extent; and due to the increase of thickness of paper products, the consumption of fibers is reduced, the consumption of wood is saved and an environment-friendly idea is met.

Description

technical field [0001] The invention belongs to the field of coated white cardboard production, and relates to high bulk coated white cardboard and a production process thereof. Background technique [0002] Coated white cardboard basically uses bleached virgin wood pulp as the main raw material, and the surface is coated with pigments. The fiber layer is generally three or four layers of fiber slurry formed by filtering water on the woven net, then composited into a whole fiber layer, and then dehydrated and dried by pressing. One or two layers of paint, the reverse side is not coated or coated with a layer of paint, and then dried to get the finished paper. The purpose of coating is to make the paper have good surface gloss and smoothness, so as to provide excellent appearance performance and printing adaptability, and then process it into a box for packaging to obtain an exquisite exterior effect. [0003] In the fiber layer, the surface layer and the bottom layer are g...

Claims

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Application Information

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IPC IPC(8): D21H27/30D21H11/06B32B29/00
Inventor 黄欣仇如全陈卫东刘丽图杨明矾刘吉锋
Owner ZHUHAI HUAFENG PAPER
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