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Double-sizing preparation process for liquid packaging white cardboard

A preparation process, technology of white cardboard, applied in wrapping paper, wrapping paper, packaging, etc., can solve problems such as large amount of sizing agent, poor sizing effect, troublesome production control, etc., achieve high quality, reduce cost, The effect of simple procedures

Active Publication Date: 2014-08-13
ZHUHAI S E Z HONGTA RENHENG PAPER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Generally speaking, the sizing method used in the production of ordinary coated white cardboard is a single sizing method, which can meet the quality requirements of the paper; while the sizing method used in the production of liquid packaging white cardboard is rosin glue. Sizing, because the liquid packaging paper has high requirements on the water absorption value of the edge of the paper, so a large amount of rosin glue needs to be added to meet the production requirements, the adding procedure is troublesome, the production control is troublesome, the amount of sizing agent is large, and the sizing effect is not good

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] 1. Pulping (in-pulp sizing)

[0030] ① Face paper layer: The pulp board of the face paper layer is crushed by a hydropulper and then beaten, and 18kg / ton of pulp (calculated on an absolute basis) of aluminum sulfate is added, stirred evenly, and 10kg / ton of pulp (calculated on an absolute basis) is further added. Dry weight calculation) of rosin, stir evenly, and make the slurry into a paper machine for copying.

[0031] ② Core paper layer: The pulp board of the core paper layer is disintegrated or beaten after being crushed by a hydropulper, and 18kg / ton of pulp (calculated as absolute dry weight) of aluminum sulfate is added, stirred evenly, and 10kg / ton of pulp ( The rosin (calculated by absolute dry weight) is stirred evenly, and the prepared slurry is sent to the paper machine for papermaking. The core layer is one layer.

[0032] ③ Bottom paper layer: The pulp board of the bottom paper layer is crushed by a hydropulper and beaten, add 18kg / ton of pulp (calcul...

Embodiment 2

[0041] 1. Pulping (in-pulp sizing)

[0042] ① Face paper layer: The pulp board of the face paper layer is crushed by a hydropulper and then beaten, add 30kg / ton of pulp (calculated on an absolute basis) of aluminum sulfate, stir evenly, and continue to add 14kg / ton of pulp (calculated on an absolute basis) Dry weight calculation) of rosin, stir evenly, and make the slurry into a paper machine for copying.

[0043] ② Core paper layer: The pulp board of the core paper layer is disintegrated or beaten after being crushed by a hydraulic pulper, and 30kg / ton of pulp (calculated as absolute dry weight) of aluminum sulfate is added, stirred evenly, and 14kg / ton of pulp ( The rosin (calculated by absolute dry weight) is stirred evenly, and the prepared slurry is sent to the paper machine for papermaking. The core layer is one layer.

[0044] ③ Bottom paper layer: The pulp board of the bottom paper layer is crushed by a hydropulper and beaten, add 30kg / ton of aluminum sulfate (cal...

Embodiment 3

[0053] 1. Pulping (in-pulp sizing)

[0054] ① Face paper layer: The pulp board of the face paper layer is crushed by a hydropulper and then beaten, and 12kg / ton of pulp (calculated on an absolute basis) of rosin and 25kg / ton of pulp (calculated on an absolute basis) of sulfuric acid are added. Aluminum, stir evenly, and make the slurry into a paper feeder for papermaking.

[0055] ② Core paper layer: The pulp board of the core paper layer is disintegrated or pulped after being crushed by a hydraulic pulper, and 14kg / ton of pulp (calculated on a dry basis) rosin is added, and 20kg / ton of pulp (calculated on a dry basis) The aluminum sulfate is stirred evenly, and the slurry made by the paper feeder is carried out for papermaking. The core layer is one layer.

[0056] ③ Bottom paper layer: The pulp board of the bottom paper layer is crushed by a hydropulper and beaten, and 10kg / ton of pulp (calculated on a dry basis) of rosin and 18kg / ton of pulp (calculated on a dry basis)...

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Abstract

The invention discloses a preparation process of double sizing for liquid packaging white cardboard. The specific operation is as follows: 1) In-slurry sizing: add 10-14 kg of slurry to the surface paper layer, core paper layer and bottom paper layer respectively Rosin gum solution per ton of pulp (calculated on absolute dry weight) and aluminum sulfate solution of 18~30kg / ton of pulp (calculated on absolute dry weight), and stirred evenly; 2) Send to the paper machine for papermaking to obtain base paper; 3) Surface sizing: apply a layer of starch sizing material on the outer surface of the top paper layer and the outer surface of the bottom paper layer of the above-mentioned base paper, the sizing amount is 1~3g / m2, then dry, calender and finish to obtain qualified liquid packaging Paper; the starch size contains 0.0115~0.0150wt% (calculated on absolute dry weight) of neutral sizing agent AKD. The preparation process adopts two sizing methods at the same time, both rosin glue internal sizing and neutral AKD surface sizing, which can effectively control the edge hydrogen peroxide water absorption value and lactic acid water absorption value of the paper, and the procedure is simple and convenient to control; rosin glue and The use of AKD is not large, which reduces the cost, and the resulting white cardboard for liquid packaging is of good quality.

Description

technical field [0001] The invention relates to a double-sizing preparation process for liquid wrapping paper and the liquid wrapping paper obtained therefrom. Background technique [0002] Generally speaking, the sizing method used in the production of ordinary coated white cardboard is a single sizing method, which can meet the quality requirements of the paper; while the sizing method used in the production of liquid packaging white cardboard is rosin glue. Sizing, because the liquid packaging paper has high requirements on the water absorption value of the edge of the paper, so a large amount of rosin glue needs to be added to meet the production requirements, the adding procedure is troublesome, the production control is troublesome, the amount of sizing agent is large, and the sizing effect is not good . Contents of the invention [0003] The purpose of the present invention is to provide a double-sizing preparation process for white cardboard for liquid packaging. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H27/10D21H17/66D21H19/54D21H19/46
Inventor 黄欣仇如全张东生余军生徐海东刘丽图彭兰
Owner ZHUHAI S E Z HONGTA RENHENG PAPER