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Filtration paper, preparation method and application thereof

A filter paper and edible oil technology, applied in filter paper, filter separation, separation methods, etc., can solve the problems of poor filtration efficiency, high quantitative paper quality, low wet strength, etc., and achieve good pore size distribution, high dry and wet strength, and high filtration efficiency. oil speed effect

Inactive Publication Date: 2013-06-05
上海科梦投资集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to overcome that the uneven distribution of the pore size of the edible oil filter material in the prior art affects the filtration efficiency of the fine filtration process after the coarse filtration of the edible oil, or the wet strength is low, it is easy to break, and the fibers tend to fall off and affect the edible oil. The safety and sanitation of paper, or the defects of high quantitative paper, thick paper, poor filtration efficiency, etc., provide a paper with uniform, good pore size distribution, high dry and wet strength, non-toxic and tasteless, safe and hygienic, which can be quickly filtered and eaten Oil filter paper and its preparation method and application

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Take 30 parts by weight of cotton fiber and put it into the beater for 20 minutes (the slurry concentration of the flaked fiber is 2.5%), and then beat it with a knife for 30 minutes. The degree of beating reaches 35°SR-45°SR, and the wet weight is 20g-28g , and then it is uniformly mixed with 70 parts by weight of Tencel fibers (8.0dtex × 8mm) in the mixing tank for 40min (the slurry concentration of the flaking fibers is 2.5%), and then add 1.0% of the dry mass of the slurry material Polyacrylamide, add water and stir evenly to form a slurry with a slurry concentration of 0.08%; input the slurry into a double cylinder paper machine to make a quantitative 80g / m 2 1799D polyvinyl alcohol with a concentration of 4.0% is applied to the base paper by a sizing roller, and it can be coiled after drying at 120°C.

[0041] After testing, the dry tensile strength (vertical and horizontal average) of the filter paper is 3.6kN / m, the wet tensile strength (vertical and horizontal ...

Embodiment 2

[0044] Take 20 parts by weight of bamboo fiber and put it into the beater to first defrost it for 20 minutes (the concentration of the slurry for the deflated fiber is 2.5%), then beat it with a knife for 30 minutes, the degree of beating reaches 45°SR~55°SR, and the wet weight is 8g~16g , and then it is uniformly mixed with 80 parts by weight of viscose fibers (8.0dtex × 8mm) of 40min (the slurry concentration of flaking fibers is 2.5%) in the mixing tank, and then add 1.0% of the dry mass of the slurry material Polyacrylamide, add water and stir evenly to form a slurry with a slurry concentration of 0.10%; input the slurry into a double cylinder paper machine to make a quantitative 85g / m 2 The base paper; the base paper is applied with 4.0% acrylate by sizing rollers, dried at 120°C and coiled.

[0045] After testing, the dry tensile strength (vertical and horizontal average) of the filter paper is 3.8kN / m, the wet tensile strength (vertical and horizontal average) is 2.4kN / ...

Embodiment 3

[0048]Take 15 parts by weight of hemp fiber and put it into the beater to deflagrate for 20 minutes (the slurry concentration of the decomposed fiber is 2.5%), and then beat with a knife for 30 minutes. The degree of percussion reaches 30°SR~40°SR, and the wet weight is 15g~25g , and then it is uniformly mixed with 85 parts by weight of Tencel fibers (6.0dtex × 8mm) in the mixing tank for 40min (the slurry concentration of the flaking fibers is 2.5%), and then add 1.0% of the dry mass of the slurry material Polyoxyethylene, add water and stir evenly to form a slurry with a slurry concentration of 0.08%; input the slurry into a double cylinder paper machine to make a quantitative 80g / m 2 The base paper; the base paper is applied with 4.5% acrylate by sizing rollers, dried at 120°C and coiled.

[0049] After testing, the dry tensile strength (vertical and horizontal average) of the filter paper is 4.1kN / m, the wet tensile strength (vertical and horizontal average) is 2.9kN / m, an...

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Abstract

The present invention discloses filtration paper, a preparation method and an application thereof. The method comprises the following steps: uniformly mixing 10-35% by mass of plant fibers and 65-90% by mass of man-made fibers to obtain a fiber raw material pulp, wherein the plant fibers are sequentially subject to ease for 10-20 min and pulping for 20-40 min, the man-made fibers are subject to ease for 30-40 min, a fiber length of the man-made fibers is 3-15 mm, and a size is 3-10 dtex; uniformly mixing the fiber raw material pulp, a dispersant and water to obtain a pulp; conveying the pulp to a papermaking machine to prepare base paper; and applying an adhesive on the base paper, drying and rolling to obtain the finished product. The prevent invention further discloses the filtration paper prepared by the method, and applications of the filtration paper as edible oil filtration paper. The filtration paper has characteristics of uniform texture, good pore size distribution, high dry and wet strength, no toxicity, no odor, safety, health, rapid edible oil filtration, and good effect.

Description

technical field [0001] The invention relates to a filter paper and its preparation method and application. Background technique [0002] There are generally two kinds of filter materials for edible oil filtration in the prior art: dry-laid non-woven material or whole plant fiber filter paper. Dry-laid non-woven materials have good air permeability, but the pore size distribution is uneven, which affects the filtration efficiency of the fine filtration process after the coarse filtration of edible oil. The all-plant fiber filter paper is easy to break due to its low wet strength, and the fibers tend to fall off, which affects the safety and hygiene of edible oil. Although some existing all-plant fiber materials have been improved by dipping and other processes, the wet strength Great improvement, but the quantification of paper quality is high, the paper is very thick, and the filtration efficiency is poor. This situation needs to be resolved urgently. Contents of the inv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H27/08D21F11/14D21H13/02
Inventor 王敏灵
Owner 上海科梦投资集团有限公司
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