White craft paper and production method thereof

A technology for surface ox card and ox card paper, applied in the field of papermaking, can solve the problem of high production cost, and achieve the effects of low production cost, improved smoothness, and fine paper surface

Active Publication Date: 2013-12-11
JIAN GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the correspon...

Method used

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  • White craft paper and production method thereof
  • White craft paper and production method thereof
  • White craft paper and production method thereof

Examples

Experimental program
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Embodiment 1

[0029] (1) Prepare the surface layer, core layer and bottom layer slurry according to the ratio in Table 1;

[0030] (2) Transport each layer of slurry to the headbox of the paper machine through its own feeding system, and put each layer of slurry with a concentration of 0.3~1.0% on the Internet to form a wet paper sheet; Composite and high-vacuum suction, made into 24% dryness base cardboard, sent to the press section for pressing;

[0031] (3) After forming the raw cardboard with a dryness of 24%, it will be dehydrated by two shoe presses. After the dryness reaches more than 48%, it will be dried in the front drying section; the pressing line pressure is: one press 800KN / M, Two pressure 1000KN / M;

[0032] (4) The paper web dried by the front drying section enters the surface sizing machine with a dryness of 90~92% for front and back film sizing, and the base paper after sizing is post-dried for re-baking Dry to 92% dryness, enter hard calendering; the line pressure contro...

Embodiment 2

[0039] (1) Prepare the surface layer, core layer and bottom layer slurry according to the ratio in Table 3;

[0040] (2) Transport each layer of slurry to the headbox of the paper machine through its own feeding system, and put each layer of slurry with a concentration of 0.3~1.0% on the Internet to form a wet paper sheet; Composite and high-vacuum suction, made into 24% dryness base cardboard, sent to the press section for pressing;

[0041](3) After forming the raw cardboard with a dryness of 24%, it is mechanically dehydrated by two shoe presses. After the dryness reaches above 48%, it is dried in the front drying section; the pressing line pressure is: one press 1000KN / M, Two pressure 1200KN / M;

[0042] (4) The paper web dried by the front drying section enters the surface sizing machine with a dryness of 90~92% for front and back film sizing, and the base paper after sizing is post-dried for re-baking Dry to 92% dryness, enter hard calendering; the line pressure control...

Embodiment 3

[0049] (1) Prepare the surface layer, core layer and bottom layer slurry according to the ratio in Table 5;

[0050] (2) Transport each layer of slurry to the headbox of the paper machine through its own feeding system, and put each layer of slurry with a concentration of 0.3~1.0% on the Internet to form a wet paper sheet; Composite and high-vacuum suction, made into 24% dryness base cardboard, sent to the press section for pressing;

[0051] (3) After forming the raw cardboard with a dryness of 24%, it will be dehydrated by two shoe presses. After the dryness reaches more than 48%, it will be dried in the front drying section; the pressing line pressure is: one press 900KN / M, Two pressure 1100KN / M;

[0052] (4) The paper web dried by the front drying section enters the surface sizing machine with a dryness of 90~92% for front and back film sizing, and the base paper after sizing is post-dried for re-baking Dry to 92% dryness, enter hard calendering; the line pressure contro...

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Abstract

The invention relates to a white craft paper and a production method thereof, and belongs to the pulping papermaking production field. The white craft paper comprises a surface layer, a core layer, a substrate and surface gluing layers (comprising a right-side gluing layer and a wrong-side gluing layer). The quantitative range of the white craft paper is 125-200g/m<2>, wherein the weight ranges of the surface applying layers, the surface layer, the core layer and the substrate are 2-5g/m<2>, 20-24g/m<2>, 30-35g/m<2> and 75-150g/m<2>. The invention also relates to the making method of the white craft paper which is a gluing squeezing making technology. The white craft paper produced through the making technology has the advantages of high whiteness, high strength, good printing performance, low cost and environmental protection, and can satisfy clients' requirements.

Description

technical field [0001] The invention belongs to the technical field of papermaking, and in particular relates to white-faced kraft cardboard and a production method thereof. Background technique [0002] At present, the traditional white-faced kraftboard manufacturing process requires higher whiteness requirements for the surface layer and core layer pulp in order to meet the whiteness requirements of the paper. Generally, the surface layer is greater than 85 degrees; the core layer is greater than 75 degrees. Therefore, under this whiteness requirement, the consumption of raw materials and auxiliary chemicals in pulping production is relatively high. [0003] In order to ensure the water-resistant effect of the finished paper, the traditional sizing process is surface sizing, and a small amount of filler is added to the surface layer. [0004] In addition, in order to ensure the evenness of the paper surface and the better covering performance of the paper surface, the tr...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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IPC IPC(8): D21H19/84D21H27/30D21H21/16D21H21/18D21H21/10D21H17/67D21H19/14D21H21/12
Inventor 舒君明王宏伟文学芬李聪定寿磊铭
Owner JIAN GRP
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