Light-coated kraft production equipment and method

A kind of production equipment and kraft cardboard technology, applied in the field of papermaking, can solve the problems of poor product quality, low production efficiency, poor coating effect, etc., and achieve the effect of improving the pressing effect, simplifying the production steps, and improving the smoothness of the surface

Active Publication Date: 2011-09-14
SHANDONG CENTURY SUNSHINE PAPER GROUP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, although there are many production devices for producing coated white-faced kraft linerboard, there are various problems such as low production efficiency, high production cost, poor coating effect and poor product quality.

Method used

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  • Light-coated kraft production equipment and method
  • Light-coated kraft production equipment and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The bottom layer slurry, lining layer slurry and surface layer slurry were prepared respectively. The bottom layer slurry used occ waste paper as raw material, the lining layer slurry used waste newspaper as raw material, and the surface layer slurry used bleached wood pulp and mixed office waste paper , the bleached deinking pulp made of waste book paper is used as a raw material, and the bottom layer slurry, liner layer slurry and surface layer slurry are respectively in the triple-wire forming device according to the content ratio of 40wt%, 30wt% and 30wt%. The original cardboard is produced by composite papermaking.

[0030] The base paperboard is squeezed to remove moisture by a pressing device, the pressing device includes two straight-through shoe presses, the pressing pressure of the first shoe is 800kN / m, the pressing pressure of the second shoe is 1000kN / m, and the pressing pressure of the two shoes is 1000kN / m. The first shoe press upper roll and the second s...

Embodiment 2

[0034] The bottom layer slurry, lining layer slurry and surface layer slurry were prepared respectively. The bottom layer slurry used occ waste paper as raw material, the lining layer slurry used waste newspaper and mixed office waste paper as raw material, and the surface layer slurry used bleached wood pulp as raw material. Raw materials, the bottom layer slurry, liner layer slurry and surface layer slurry are compounded on a three-fold wire forming device at a content ratio of 50wt%, 25wt% and 25wt%, respectively, to obtain base paperboard.

[0035] The base paperboard is squeezed to remove moisture by a pressing device, which includes two straight-through shoe presses, the pressure of the first shoe is 900kN / m, the pressure of the second shoe is 1000kN / m, and the pressure of the two shoes is 1000kN / m. The first shoe press upper roll and the second shoe lower roll of the straight-through shoe press device are shoe rolls, the second shoe press upper roll uses a shoe press bel...

Embodiment 3

[0039] Prepare bottom layer slurry, lining layer slurry and surface layer slurry respectively, described bottom layer slurry adopts occ waste paper as raw material, described lining layer slurry adopts waste newspaper, mixed office waste paper and waste book paper as raw material, so The surface layer slurry adopts bleached deinking pulp made from mixed office waste paper and waste book paper and white paper strips as raw materials. % and 20wt% content ratio, compound paperboard is produced on the triple-fold wire forming device.

[0040] The base paperboard is squeezed to remove water through a pressing device, and the pressing device includes two straight-through shoe presses, the pressing pressure of the first shoe is 1000kN / m, and the pressing pressure of the second shoe is 1100kN / m. The first shoe press upper roll and the second shoe lower roll of the straight-through shoe press device are shoe rolls, the second shoe press upper roll uses a shoe press belt, the first shoe...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The invention discloses light-coated kraft production equipment and a method. The production equipment comprises a triple net forming device, a squeezing device, a front drying device, a film transfer sizing machine, a rear drying device, a hard calendering device, a first scraper coating machine, a first scraper rear drying device, a second scraper coating machine, a second scraper rear drying device, a soft calendering device, a cooling device and a coiling forming device which are sequentially mounted on a rack. In the production of light-coated kraft by adopting the equipment, after the two sides of the original paperboard are sized by the film transfer sizing machine, the ink absorption uniformity of the kraft is improved; and through twice scraper coating, a good coating effect can be obtained at low coating quantity, and the requirement on high printing performance of the kraft can be met; and moreover, the bottom layer, lining layer and surface layer adopt different raw materials as well as proper proportions of raw materials respectively, and the produced light-coated kraft has low ration and high strength.

Description

[0001] technical field [0002] The invention relates to the technical field of papermaking, in particular to a light-coated white-faced kraftboard production equipment and a method for producing light-coated white-faced kraftboard by using the equipment. Background technique [0003] Kraft linerboard is generally made of waste paper or wood pulp as raw materials. It is generally divided into bottom layer and surface layer or bottom layer, core layer and surface layer. It has low cost and high strength, but its surface is rough and its printability is poor. At present, in order to save costs, many commodity packaging generally use kraft cardboard as packaging materials. However, with the improvement of people's living standards and the pursuit of packaging quality, the use of kraft cardboard can no longer meet the needs of some exquisite and high-end products. [0004] Coated white kraft linerboard is increasingly becoming a widely used packaging material due to its high st...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21F9/00D21H27/38B32B29/00D21H23/34
Inventor 王东兴慈晓雷盛永忠吕兆岗
Owner SHANDONG CENTURY SUNSHINE PAPER GROUP
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