Equipment and method for producing coating surface bleached kraft liner board

A production equipment and a technology for kraft paperboard, 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 improving surface smoothness, simplifying production steps, and low coating amount

Inactive Publication Date: 2011-09-14
昌乐新迈纸业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, although there are many production equipments for the production of coated white-faced kraft linerboard, 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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  • Equipment and method for producing coating surface bleached kraft liner board
  • Equipment and method for producing coating surface bleached kraft liner board

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 mixed office waste paper as raw material, and the surface layer slurry used bleached wood pulp as raw material. The bottom layer slurry, liner layer slurry and surface layer slurry are compounded on a triple-wire forming device at a content ratio of 40wt%, 30wt% and 30wt%, respectively, to obtain raw cardboard.

[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 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 2

[0034] Prepare bottom layer slurry, lining layer slurry and surface layer slurry respectively, bottom layer slurry adopts occ waste paper as raw material, lining layer slurry adopts waste newspaper as raw material, and surface layer slurry adopts bleached wood pulp as raw material, the Base layer slurry, liner slurry and surface layer slurry are compounded on a triple-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 belt, the first shoe press upper roll, the first shoe lower roll and the se...

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 mixed office waste paper and waste book paper as raw material, and described surface layer The slurry uses mixed office waste paper and white paper strips as raw materials, and the bottom layer slurry, liner layer slurry and surface layer slurry are respectively prepared in a three-fold wire forming device according to the content ratio of 72wt%, 16wt% and 12wt%. The original cardboard is produced by composite papermaking.

[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 d...

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Abstract

The invention discloses equipment and a method for producing a coating surface bleached kraft liner board. The equipment comprises a three-stacked net forming device, a pressing device, a pre-drying device, a film transferring sizing machine, a post-drying device, a hard calendering device, a first blade coater, a first scraper post-drying device, a second blade coater, a second scraper post-drying device, a soft calendering device, a cooling device and a coiling forming device which are sequentially arranged on a machine frame. When the coating surface bleached kraft liner board is produced by utilizing the equipment, after being subjected to the surface layer coating and the bottom surface sizing by utilizing the film transferring sizing machine as well as blade coating twice, a raw paperboard can have enhanced surface smoothness to ensure that a good coating effect can be achieved on the premise of light coating weight and the requirement for high printing performance of the kraft liner board can be satisfied; and in the invention, different raw materials and proper proportions of the raw materials are respectively adopted at the bottom layer, the lining and the surface layer to ensure that the produced coating surface bleached kraft liner board has low basis weight and high strength.

Description

[0001] technical field [0002] The invention relates to the technical field of papermaking, in particular to a production equipment for coated white-faced kraftboard and a method for producing 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 strength, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H19/00D21H23/34D21H23/48D21F3/00D21F1/10D21H27/30B32B29/00
Inventor 王东兴慈晓雷盛永忠吕兆岗
Owner 昌乐新迈纸业有限公司
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