Coaster base paper and production method thereof

A production method and technology of base paper, applied in the field of papermaking, can solve the problems of unusable packaging, failure to meet the high bulkiness requirements of coasters, and failure to achieve resource conservation, etc., to achieve the effects of hygiene protection, high water absorption, and moisture protection

Active Publication Date: 2016-04-13
ZHENJIANG DADONG PULP & PAPER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although white cardboard or cardboard paper can achieve the purpose of being used for composite aluminum foil post-processing coasters, there are the following problems in using white cardboard or cardboard for composite aluminum foil processing coasters: First, due to white cardboard or cardboard Such paper often contains fluorescent whitening agents and cannot be used for the inner packaging of food bottle caps; second, white cardboard or cardboard paper generally has a bulk thickness of 1.4cm 3 Below / g, neither can meet the high bulk thickness requirements of the coaster, nor can it achieve the purpose of saving resources.

Method used

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  • Coaster base paper and production method thereof
  • Coaster base paper and production method thereof
  • Coaster base paper and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Example 1, 350g / m 2 Production steps of type A coaster

[0017] 1) Pulverization, the pulp made by refining the three basic raw materials of softwood pulp, hardwood pulp and mechanical pulp, the pulp freeness CSF control of pulp raw materials: softwood pulp 430mL, hardwood pulp 500mL, mechanical pulp 430mL ;

[0018] 2) Batching and sizing, according to the raw material formulations of the surface layer, bottom layer, and core layer, batching in their respective batching tanks, the raw materials of the surface layer and the bottom layer are composed of coniferous wood pulp and hardwood pulp; the raw materials of the core layer are composed of coniferous wood pulp and mechanical pulp; the batching and sizing process also sequentially add wet strengthening agent, rosin size, aluminum sulfate, filler and retention aid;

[0019] 3) Papermaking, the three-layer slurry after batching is divided into three layers and enters the wire part for papermaking, and the starch bondi...

Embodiment 2

[0035] Example 2, 380g / m 2 B type coaster base paper production steps:

[0036] 1) Crushing, the basic raw materials of coniferous wood pulp and mechanical pulp are refined into pulp, and the pulping freeness CSF control of pulp raw materials: 440mL of coniferous wood pulp and 430mL of mechanical pulp;

[0037] 2) batching and sizing, according to the raw material formula of surface layer, bottom layer and core layer, batching in respective batching tanks respectively, the raw material composition of surface layer and bottom layer is coniferous wood pulp and mechanical pulp; the raw material composition and weight ratio of core layer are Softwood pulp and mechanical pulp; the batching and sizing process also sequentially adds wet strengthening agent, rosin size, aluminum sulfate, filler and retention aid;

[0038] 3) Papermaking, the three-layer slurry after batching is divided into three layers and enters the wire part for papermaking, and the starch bonding layer is formed ...

Embodiment 3

[0054] Example 3, 380g / m 2 Type A coaster base paper and production method thereof

[0055] 1) Pulverization, the pulp made by refining the three basic raw materials of softwood pulp, hardwood pulp and mechanical pulp, the pulp freeness CSF control of pulp raw materials: softwood pulp 430mL, hardwood pulp 500mL, mechanical pulp 430mL ;

[0056] 2) Batching and sizing, according to the raw material formulations of the surface layer, bottom layer, and core layer, batching in their respective batching tanks, the raw materials of the surface layer and the bottom layer are composed of coniferous wood pulp and hardwood pulp; the raw materials of the core layer are composed of coniferous wood pulp and mechanical pulp; the batching and sizing process also sequentially add wet strengthening agent, rosin size, aluminum sulfate, filler and retention aid;

[0057] 3) Papermaking, the three-layer slurry after batching is divided into three layers and enters the wire part for papermaking,...

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Abstract

The invention belongs to the paper making technology and relates to cup mat body paper and a production method thereof. The cup mat body paper is formed by a face layer, a core layer and a bottom layer. Two of needle-point leaf wood pulp, hardwood pulp and mechanical pulp are used as raw material pulp of all the layers. A starch layer is formed between every two layers in a spraying mode so as to improve the bonding strength between every two layers. The needle-point leaf wood pulp is bleached sulfate process needle-point leaf wood pulp, the hardwood pulp is bleached sulfate process hardwood pulp, and the mechanical pulp is chemically bleached hot-ground mechanical pulp. A common triple-lap long-net multi-cylinder paper machine can be used for producing the cup mat body paper which is high in water-absorbing property and large in bulk, meets the requirement of the hygienic standard of the body paper for food packaging and is used for placing food and being packaged in bottle covers.

Description

technical field [0001] The invention belongs to papermaking technology, and relates to a coaster base paper and a production method thereof. Background technique [0002] The coaster base paper sold and used in the existing market generally uses white cardboard or cardboard paper, and even uses coated paper or gray-bottomed white board paper. Although white cardboard or cardboard paper can achieve the purpose of being used for composite aluminum foil post-processing coasters, there are the following problems in using white cardboard or cardboard for composite aluminum foil processing coasters: First, due to white cardboard or cardboard Such paper often contains fluorescent whitening agents and cannot be used for the inner packaging of food bottle caps; second, white cardboard or cardboard paper generally has a bulk thickness of 1.4cm 3 Below / g, neither can meet the high bulk thickness requirements of the coaster, nor can it achieve the purpose of saving resources. Third, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21F11/04D21H27/30D21H11/04D21H11/08D21H17/62D21H17/55D21H17/67B32B29/00
Inventor 刘存芬陈国平戴罗根谭宁华蔡兆斌张丽顾克强
Owner ZHENJIANG DADONG PULP & PAPER
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