White-surface coated craft paper and production method thereof

A technology for coating kraft cardboard and production methods, which is applied in the field of kraft cardboard, and can solve the problem of uneven coverage of the pigment layer on the paper surface and ink absorption, easy delamination, breakage, bursting of the kraft cardboard, and difficulty in delamination, etc. problems, to achieve the effect of improving the covering effect of paint, facilitating the subsequent coating operation, and stabilizing the quality

Active Publication Date: 2013-02-06
山东晨鸣纸业集团股份有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The technical problem to be solved by the present invention is to provide a kind of white surface coated kraft cardboard and its production method for the above deficiencies, which overcomes the problems of easy delamination, breakage and peeling of the kraft cardboard in the prior art, paper surface pigmen

Method used

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  • White-surface coated craft paper and production method thereof
  • White-surface coated craft paper and production method thereof
  • White-surface coated craft paper and production method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0064] Example 1, such as figure 2 As shown, a white surface coated kraft cardboard comprises a core paper layer 1, the upper side of the core paper layer is a face paper layer 2, and the lower side is a bottom paper layer 3, and the upper surface of the face paper layer 2 is provided with three layers of coating Layers, from bottom to top are base coat 4, middle coat 5, and top coat 6.

[0065] The above-mentioned production method of white surface coated kraftboard comprises: waste paper batching; preparation of waste paper slurry; paper layer papermaking; coating base paper compounding, pre-drying, sizing, post-drying; coating and post-processing steps; wherein,

[0066] 1. Waste paper ingredients: In order to solve the problem of multiple sources of waste paper and disordered quality in large-scale production, the mass ratio of American waste: national waste: European waste: Japanese waste is 50%: 20%: 15%: 15%. Fully mixed first, and then pulping, the uniform mixing of...

Embodiment 2

[0100] Example 2, except that the following is different from Example 1, other processes are the same as in Example 1: in the step of making the bottom paper layer, 60% of the long-fiber waste paper pulp and 40% of the short-fiber waste paper pulp; in the step of making the core paper layer, Long fiber waste paper pulp 100%; in the step of making the face paper layer, use 100% bleached recycled fiber pulp DIP; in the sizing step, the concentration of starch paste is 1%, and the amount of penetrant, wet strength agent and paper strengthening agent to starch is respectively 1%, 10%, 1%; the latex in the base coat coating, mid coat coating and top coat coating steps consisted of 100% synthetic latex.

Embodiment 3

[0101] Embodiment 3, except following difference with embodiment 1, other processes are all the same as embodiment 1: make the bottom

[0102] In the paper layer step, long-fiber waste paper pulp is 40% and short-fiber waste paper pulp is 60%; in the core paper layer step, long-fiber waste paper pulp is 70% and short-fiber waste paper pulp is 30%; Pulp 30%, bleached hardwood pulp 50%, DIP pulp 20%; in the sizing step, the concentration of starch paste is 2%, and the amount of penetrant, wet strength agent, and paper strengthening agent to starch is 3%, 3%, and 3% respectively ; The latex in the primer coating, mid-coat coating and top coat coating steps is composed of 80% synthetic latex and 20% biological latex.

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Abstract

The invention discloses white-surface coated craft paper and a production method thereof. The white-surface coated craft paper comprises a core paper layer; the upper side of the core paper layer is a surface paper layer, and the lower side is a bottom paper layer; a coating layer is arranged on the upper surface of the surface paper layer; the bottom paper layer and the core paper layer of the white-surface coated craft paper are prepared by the steps of: dosing the waste paper, preparing waste paper pulp to obtain non-deinked waste paper pulp, and manufacturing paper through a paper layer to obtain a wet bottom paper layer and a wet core paper layer; the surface paper layer is prepared by the steps of: mixing the bleached hardwood pulp, bleached softwood pulp and bleached regenerated fiber pulp DIP at any proportion, and manufacturing paper through a paper layer to obtain a wet surface paper layer; and the wet bottom paper layer, the wet core paper layer and the wet surface paper layer are subjected to the steps of compounding with the coated body paper, preliminary drying, sizing, later drying, paper surface calendering, paper surface coating and after-treatment to obtain the white-surface coated craft paper. The available waste paper types are increased, and the fiber source is wider; and meanwhile, the quality of the waste paper pulp is effectively stabilized so as to guarantee the quality stability of the coated body paper and the white-surface craft paper and avoid easy layering, splitting and scaling.

Description

technical field [0001] The invention relates to a kraft cardboard, in particular to a white surface coated kraft cardboard and a production method thereof, belonging to the technical field of kraft cardboard manufacturing. Background technique [0002] With the development of the national economy, the circulation of various commodities such as electronics, electromechanical, instrumentation, daily chemicals, clothing and textiles is increasing. Quality also puts forward higher requirements. [0003] The initial kraft cardboard is usually a single-layer structure made of natural chemical pulp and single-wire forming. In order to increase its thickness and stiffness to provide better packaging performance, it gradually develops into double-layer or multi-wire papermaking. , forming natural color chemical pulp vermicelli, lined with waste paper pulp, and then compounded into a two-layer or multi-layer structure product. At present, most of the products on the market are a thr...

Claims

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Application Information

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IPC IPC(8): D21H27/30B32B29/00D21H11/14D21F11/04D21H21/16D21H21/14D21H21/20D21H21/18D21H17/28D21H19/40D21H19/38
Inventor 陈洪国邵学军张延军张国英张革仓王勇韩旭霞
Owner 山东晨鸣纸业集团股份有限公司
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