Manufacturing method of salt packing paper

A manufacturing method and technology of wrapping paper, applied in the field of papermaking, can solve the problems of difficult natural degradation of plastics and environmental pollution, and achieve the effects of rapid degradation, good moisture resistance and high strength

Active Publication Date: 2019-01-11
YUEYANG FOREST & PAPER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the salt packaging bags on the market mainly use plastic or paper-plastic composite packaging. Because plastics are extremely diff

Method used

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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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Example 1: 70 grams of matte base paper

[0023] 40% hardwood chips: 60% coastal pine chips are first mixed in the silo according to the weight ratio. After the mixing is uniform, the chemical pulping method and the H2O2 micro-bleaching pulping technology are used to control the ISO brightness of the natural color pulp to 26 degrees ; Then the mixed slurry is beaten in series with three cone mills, the beating degree is 30ºSR, and the wet weight is 7-9 grams; 10kg / ton of paper rosin glue sizing agent, 10kg / ton of cationic starch, 0.4kg / ton of paper retention aid and 100kg / ton of paper talc powder are prepared into diluted slurry to go online, and double-sided dehydration is carried out through overlapping nets to ensure uniform fiber dispersion, orderly and uniform distribution of fibers in vertical and horizontal directions, wet paper After composite pressing in the press section; the paper that is dried to 95% dryness before entering the sizing section, the paper is subj...

Embodiment 2

[0028] 40% hardwood chips: 60% coastal pine chips are first mixed in the silo according to the weight ratio. After the mixing is uniform, the chemical pulping method and the H2O2 micro-bleaching pulping technology are used to control the ISO brightness of the natural color pulp at 24 degrees ; Then the mixed slurry is beaten in series through three cone mills, with a beating degree of 26ºSR and a wet weight of 7-9 grams; 5kg / ton of paper rosin glue sizing agent, 8kg / ton of cationic starch, 0.2kg / ton of paper retention aid and 100kg / ton of paper talc are formulated into a diluted slurry to go online, and then dewatered on both sides through the stacked mesh to ensure uniform fiber dispersion, orderly and uniform distribution of fibers in vertical and horizontal directions, wet paper After the composite pressing in the press section; the paper which is dried to 80% dryness before entering the coating, is coated with a coating machine, and the single side is controlled at 1.5g / m2 a...

Embodiment 3

[0032] 40% hardwood chips: 60% coastal pine chips are first mixed in the silo according to the weight ratio. After the mixing is uniform, the chemical pulping method and the H2O2 micro-bleaching pulping technology are used to control the ISO brightness of the natural color pulp at 25 degrees ; Then the mixed slurry is beaten in series through three cone mills, the beating degree is 28ºSR, and the wet weight is 7-9 grams; 8kg / ton paper rosin glue sizing agent, 9kg / ton cationic starch, 0.3kg / ton of paper retention aid and 100kg / ton of paper talc powder are prepared into diluted slurry to go online, and the double-sided dehydration is carried out through the stacked net to ensure uniform fiber dispersion, orderly and uniform distribution of fibers in vertical and horizontal directions, wet paper After the composite pressing in the press section; the paper that is dried to 80% dryness before entering the coating is coated, and the coating machine is used for coating, and the single ...

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Abstract

The invention discloses a manufacturing method of salt packing paper, which comprises the steps of firstly, mixing coniferous wood chips with broadleaved wood chips, then performing pulping, adoptinga conical grinder grinding process, adding auxiliary materials, manufacturing wet paper sheets with pulp, and performing prior-drying, surface glue application, post-drying and calendaring decoration.Provided by the invention is a manufacturing method of salt packing paper which is good in strength, high in breaking resistance and good in moisture-proof performance. Meanwhile, the salt packing paper has the advantages of rapid degradation and ability of meeting environmental protection requirements and health requirements for food packing paper.

Description

Technical field [0001] The invention relates to the technical field of papermaking, in particular to a method for manufacturing salt packaging paper. Background technique [0002] At present, the salt packaging bags on the market mainly use plastic or paper-plastic composite packaging. Because plastics are extremely difficult to degrade naturally, causing serious environmental pollution, some developed countries have partially restricted the use of plastic packaging. Paper packaging has been widely used in foreign salt packaging. The development of salt packaging paper to reduce white pollution is not only a general trend, but also a good thing for the country and the people. [0003] The salt packaging paper product requirements meet the hygiene requirements of food packaging paper, and have good strength, high breaking resistance, good moisture resistance, and rapid degradation to meet environmental protection requirements. Summary of the invention [0004] The purpose of the pre...

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): D21D1/22D21H15/10D21H17/29D21H17/62D21H17/68D21H19/14D21H19/20D21H19/82D21H19/84D21H21/10D21H21/16D21H21/54D21H27/10D21H11/00
CPCD21D1/22D21H11/00D21H15/10D21H17/29D21H17/62D21H17/68D21H19/14D21H19/20D21H19/824D21H19/84D21H21/10D21H21/16D21H21/54D21H27/10
Inventor 朱宏伟李丹刘成良史梦华何江林阳路
Owner YUEYANG FOREST & PAPER CO LTD
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