High-bulk coated white kraft paper and preparation method thereof

A technology of bulk and white coating, applied in the field of high-bulk coated white kraft paper and its preparation, can solve the problems of poor bursting resistance, slow ink absorption, low bulk, etc. Excellent effect of thickness stiffness and bursting resistance

Inactive Publication Date: 2016-12-07
HAINAN JINHAI PULP & PAPER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the purpose of the present invention is to propose a high-bulk coated white kraft paper, which improves the problems of low bulk, poor burst resistance and slow ink absorption speed of existing products.

Method used

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  • High-bulk coated white kraft paper and preparation method thereof

Examples

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Effect test

Embodiment 1

[0033] A kind of high-bulk coated white kraft paper, including base paper and coatings formed on both sides of the base paper, calculated by weight,

[0034] The pulp for making this base paper includes: 30 parts of kraft softwood pulp, the freeness after beating is 450ml, and the bulk is 1.25cm 3 / g; 52 parts of bleached kraft hardwood pulp, the freeness after beating is 420ml, and the bulk is 1.25cm 3 / g; 18 parts of bleached chemical thermomechanical pulp, the freeness after beating is 330ml, and the bulk is 2.8cm 3 / g; 8 parts of ground calcium carbonate, the average particle size of ground calcium carbonate particles is 1-2um; 0.8 parts of positive starch, the degree of substitution of positive starch is 0.025-0.03; and 1.2 parts of alkenyl succinic anhydride;

[0035] The paint for preparing the coating includes: 15 parts of superfine clay, the average particle size of ultrafine clay is 0.1-1um; 85 parts of ground calcium carbonate, the average particle size of ground c...

Embodiment 2

[0042] A kind of high-bulk coated white kraft paper, including base paper and coatings formed on both sides of the base paper, calculated by weight,

[0043] The pulp for making this base paper includes: 20 parts of kraft softwood pulp, the freeness after beating is 450ml, and the bulk is 1.3cm 3 / g; 65 parts of bleached kraft hardwood pulp, the freeness after beating is 420ml, and the bulk is 1.3cm 3 / g; 20 parts of bleached chemical thermomechanical pulp, the freeness after beating is 330ml, and the bulk is 3cm 3 / g; 8 parts of ground calcium carbonate, the average particle size of ground calcium carbonate particles is 1-2um; 0.8 parts of positive starch, the degree of substitution of positive starch is 0.025-0.03; and 1.2 parts of alkenyl succinic anhydride;

[0044] The paint for preparing the coating includes: 15 parts of superfine clay, the average particle size of ultrafine clay is 0.1-1um; 85 parts of ground calcium carbonate, the average particle size of ground calcium...

Embodiment 3

[0051] A kind of high-bulk coated white kraft paper, including base paper and coatings formed on both sides of the base paper, calculated by weight,

[0052] The pulp for making the base paper includes: 10 parts of kraft softwood pulp, the freeness after beating is 400ml, and the bulk is 1.25cm 3 / g; 70 parts of bleached kraft hardwood pulp, the freeness after beating is 380ml, and the bulk is 1.25cm 3 / g; 15 parts of bleached chemical thermomechanical pulp, the freeness after beating is 300ml, and the bulk is 2.8cm 3 / g; 5 parts of light calcium carbonate, the average particle size of which is 1-2um; 0.5 part of polyacrylamide and polyamide-polyamine-epichlorohydrin copolymer composition; and 0.8 part of ethylene maleic anhydride copolymer;

[0053] The paint for preparing the coating includes: 10 parts of superfine white clay, with an average particle size of 0.1-1um; 20 parts of china clay, with an average particle size of 1-2um; 70 parts of ground calcium carbonate, with ...

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Abstract

The invention provides high-bulk coated white kraft paper which comprises base paper and coating layers formed on two surfaces of the base paper. Paper pulp for preparing the base paper comprises sulphate softwood pulp which has the freeness of 400 to 450 ml after being pulped and the bulk of 1.25 to 1.35 cm<3>/g, bleached sulphate hardwood pulp which has the freeness of 380 to 430 ml after being pulped and the bulk of 1.25 to 1.35 cm<3>/g, bleached chemithermomechanical pulp which has the freeness of 300 to 350 ml after being pulped and the bulk of 2.8 to 3.2 cm<3>/g, and filler, a paper strength agent and a sizing agent. A coating for preparing the coating layers comprises carclazyte, pigment and an adhesive. The coated white kraft paper provided by the invention is high in bulk, good in stiffness and good in smoothness; during printing, the phenomenon of paper clamping can be avoided; after being printed, the high-bulk coated white kraft paper can be directly processed and made into a bag, so that the printing processing efficiency can be improved, and the printing cost can be reduced.

Description

technical field [0001] The invention relates to the technical field of papermaking technology, in particular to a high-bulk coated white kraft paper and a preparation method thereof. Background technique [0002] White kraft paper, as the name suggests, is one of the types of kraft paper. Generally, the colors of kraft paper mainly include yellow, natural color, white on one side and yellow on the other, white on both sides, etc. White kraft paper is double-sided white kraft paper. Generally speaking, white kraft paper is divided into original white and super white, and super white is sometimes called high white kraft paper. According to the performance of the paper, there are flame-retardant white kraft paper, high-humidity white kraft paper, waterproof white kraft paper and ash-free white kraft paper. According to the printing division, it can be divided into printing white kraft paper and dyed white kraft paper. Coated paper is coated with a layer of paint on the base...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H15/10D21H19/10D21H19/38D21H19/40D21H19/58D21H19/82D21H19/84D21H21/16D21H21/18D21H17/67D21H17/68
CPCD21H15/10D21H17/675D21H17/68D21H17/74D21H19/10D21H19/38D21H19/40D21H19/58D21H19/828D21H19/84D21H21/16D21H21/18
Inventor 翁浥程
Owner HAINAN JINHAI PULP & PAPER
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