Four-stacked net forming equipment and method for producing coating kraft liner board

A technology for coating kraft paperboard and forming equipment, applied in the field of papermaking, can solve the problems of poor product quality, low production efficiency, poor coating effect, etc., and achieve the effects of long contact time, simplified production steps, and good smoothness

Inactive Publication Date: 2011-09-14
SHANDONG CENTURY SUNSHINE PAPER GROUP
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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 kraftboard, there are different problems such as low production efficiency, high production cost, poor coating effect and poor product quality.

Method used

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  • Four-stacked net forming equipment and method for producing coating kraft liner board
  • Four-stacked net forming equipment and method for producing coating kraft liner board

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The bottom layer slurry, core layer slurry, liner layer slurry and surface layer slurry are prepared respectively. The bottom layer slurry is made of long fiber pulp after OCC waste paper pulping, and the core layer slurry is made of OCC waste paper. The short fiber pulp that is classified after pulping is used as raw material, the lining layer pulp uses waste newspaper as raw material, and the surface layer pulp adopts bleached wood pulp as raw material. The bottom layer pulp, core layer pulp, lining layer pulp and The surface layer slurry is compounded on a four-fold wire forming device at a content ratio of 25wt%, 35wt%, 20wt% and 20wt%, respectively, to obtain base paperboard.

[0032] The base paperboard is squeezed to remove moisture by a pressing device, and the pressing device includes two straight-through shoe presses, the pressing pressure of the first shoe is 800kN / m, and the pressing pressure of the second shoe is 900kN / m. The first shoe press upper roll and...

Embodiment 2

[0036]The bottom layer slurry, core layer slurry, liner layer slurry and surface layer slurry are prepared respectively. The bottom layer slurry is made of long fiber pulp after OCC waste paper pulping, and the core layer slurry is made of OCC waste paper. The short fiber pulp that is classified after pulping is used as raw material, the lining layer pulp is made of mixed office waste paper and waste book paper, and the surface layer pulp is made of bleached wood pulp and white paper strips. The liner slurry and the surface layer slurry are respectively 30wt%, 30wt%, 22wt% and 18wt%, respectively, and are compounded on a four-fold wire forming device to produce base paperboard.

[0037] 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 t...

Embodiment 3

[0041] The bottom layer slurry, core layer slurry, liner layer slurry and surface layer slurry are prepared respectively. The bottom layer slurry is made of long fiber pulp after OCC waste paper pulping, and the core layer slurry is made of OCC waste paper. The short fiber pulp that is classified after pulping is used as raw material, the lining layer pulp is made of mixed office waste paper and waste book paper as raw material, and the surface layer pulp is bleached bleached pulp made of bleached wood pulp and mixed office waste paper and waste book paper. Ink slurry is used as a raw material, and the bottom layer slurry, core layer slurry, liner layer slurry and surface layer slurry are respectively placed on a four-fold wire forming device according to the content ratio of 40wt%, 30wt%, 15wt% and 15wt%. Composite copying to produce raw cardboard.

[0042] The base paperboard is squeezed to remove water through a pressing device, and the pressing device includes two straight...

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PUM

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Abstract

The invention discloses four-stacked net forming equipment and method for producing a coating kraft liner board. The equipment comprises a four-stacked net forming device, a pressing device, a pre-drying device, a surface sizing machine, a post-drying device, a belt calender, a curtain coater, a curtain coating post-drying device, a first blade coater, a first blade coating post-drying device, a second blade coater, a second blade coating post-drying device, a soft calendering device, a cooling device and a coiling forming device which are sequentially arranged on a machine frame. In the invention, When the coating kraft liner board is produced, the sizing is carried out on the surface layer to ensure that the uniformity of absorbing printing ink of the kraft liner board is improved; and during the coating, the respective superiorities of the curtain coating and the blade coating are combined and different raw materials with proper proportions are respectively adopted at the bottom layer, the core layer, the lining and the surface layer to ensure that the produced coating kraft liner board has the advantages of low basis weight, high strength, good bulk and high surface smoothness and can satisfy the requirements for the coating kraft liner board in different printing modes and different fields.

Description

[0001] technical field [0002] The invention relates to the technical field of papermaking, in particular to a four-fold wire forming device for producing coated kraft cardboard and a method for producing coated kraft cardboard by using the device. 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 kraft linerboard is increasingly becoming a widely used packaging material due to its high strength, high...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H19/00D21H23/34D21H23/48D21F3/00D21H27/30B32B29/00
Inventor 盛永忠
Owner SHANDONG CENTURY SUNSHINE PAPER GROUP
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