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ML kraft paperboard and preparation process thereof

A kraft cardboard and paper-making technology, which is applied in the field of papermaking, can solve the problems of not controlling the bonding strength between layers, despising the aesthetics of the appearance, and delamination, so as to achieve good evenness, improved retention rate, and high tightness. Effect

Active Publication Date: 2019-10-25
汇胜集团平原纸业有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, domestic kraft linerboard (containerboard) is mainly used for the surface of cartons. However, with the continuous growth of the demand for the paper tube industry and the rapid development of the industry, customers' requirements for paper tubes are not only focused on quality, but also on product quality. There are also certain requirements for the appearance, and there are also some problems. The original paper tubes focus on product quality and despise the aesthetics of the appearance. For this, some manufacturers began to try to use kraft cardboard as the best paper tube. The outer packaging can improve the aesthetics of the paper tube, but most of the kraft paperboards on the market do not control the bonding strength between layers. During the tube rolling process, blistering and delamination are prone to occur. Aiming at this phenomenon, our company has developed Yes, a low weight paper used for the outer layer of the paper tube, the paper has high smoothness, uniform and beautiful color, high water resistance and interlayer strength index, which better solves this situation

Method used

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  • ML kraft paperboard and preparation process thereof

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Embodiment Construction

[0020] In order to make the technical solutions and beneficial effects of the present invention clearer, the present invention will be further described in detail below in conjunction with specific examples. It should be understood that the specific embodiments described here are only for understanding the present invention and are not intended to limit the present invention. All other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0021] For ease of description, the invented ML kraft cardboard papermaking process will be described in detail below.

[0022] A kind of ML kraft cardboard, including, the quantitative of ML kraft cardboard is 170 / 200g / m 2 , Banner quantitative difference ≤ 3%.

[0023] ML kraft cardboard tightness ≥ 0.75g / cm 3 , Smoothness ≥ 5S, water absorption ≤ 60g / m2, paper moisture is 8 ± 2%.

[0024] Transverse ring pressure index ≥ 7.3N.m / g, interlayer bon...

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Abstract

The invention discloses an ML kraft paperboard and a preparation process thereof, and mainly relates to the technical field of papermaking. According to the ML kraft paperboard, basis weight is 170, 200g / m<2>, the banner quantitative difference is less than or equal to 3%, tightness is greater than or equal to 0.75 g / cm<3>, smoothness is greater than or equal to 5s, a lateral ring pressure index is greater than or equal to 7.3N.m / g, interlayer bonding strength is greater than or equal to 130J / m<2>, a bursting index is greater than or equal to 1.8kpa. M<2> / g, transverse folding strength is greater than or equal to 4 times and paper moisture is 8+ / -2%. The preparation process of the ML kraft paperboard comprise the steps that preparation, pulping, mixing, paper forming and rewinding are carried out to obtain the paperboard, and then packaging is carried out; and pulp is ground during pulping, spray starch and fillers are added during paper making, and a dyeing agent is added for dyeing.The ML kraft paperboard has the advantages of low cost, high interlayer bonding, high water resistance, high smoothness and clean front appearance. The ML kraft paperboard is mainly used in a surfacelayer and an inner layer of an industrial paper tube, the ''angle-rising'' problem does not occur when the paper tube is cut in sections due to low basis weight; and the problems of surface blisteringand paper tube layering are solved due to the fact that the interlayer bonding strength of the ML kraft paperboard is higher than that of a general kraft paperboard and cardboard paper.

Description

technical field [0001] The invention mainly relates to the technical field of papermaking, in particular to ML kraft cardboard and a preparation process thereof. Background technique [0002] At present, domestic kraft linerboard (containerboard) is mainly used for the surface of cartons. However, with the continuous growth of the demand for the paper tube industry and the rapid development of the industry, customers' requirements for paper tubes are not only focused on quality, but also on product quality. There are also certain requirements for the appearance, and there are also some problems. The original paper tubes focus on product quality and despise the aesthetics of the appearance. For this, some manufacturers began to try to use kraft cardboard as the best paper tube. The outer packaging can improve the aesthetics of the paper tube, but most of the kraft paperboards on the market do not control the bonding strength between layers. During the tube rolling process, bl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H27/10D21H27/26D21H27/32D21B1/32D21H11/14D21H17/66D21H17/68D21H19/10D21H21/10D21H21/16D21H21/28
CPCD21B1/32D21H11/14D21H17/66D21H17/68D21H19/10D21H21/10D21H21/16D21H21/28D21H27/10D21H27/26D21H27/32Y02W30/64
Inventor 王月东刘国兴李涛
Owner 汇胜集团平原纸业有限公司
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