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A kind of preparation method of highly air-permeable aseptic packaging paper

A technology for air permeability and packaging, which is applied in the field of high air permeability aseptic packaging paper preparation, which can solve the problems of low surface strength, poor anti-bacteria effect, and keep sterile medical consumables, etc., and achieve high surface strength and printability Effect

Active Publication Date: 2018-08-07
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, in the preparation method of aseptic packaging paper, the paper has poor air permeability, which is not conducive to disinfection and sterilization; And the shortcomings of poor post-processing effect, so it is of great practical significance to develop a kind of aseptic wrapping paper with high air permeability, good anti-bacterial effect and high surface strength.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0025] A preparation method of highly air-permeable aseptic packaging paper, comprising the following steps:

[0026] Polylactic acid fiber solution modification treatment: weigh polylactic acid fiber and prepare it into an aqueous solution, heat it to 40°C-80°C, adjust the pH to 5.0-8.0, weigh sodium alginate to make a solution, add it to pH5.0-8.0 In the polylactic acid fiber solution, add sodium alginate solution, after ultrasonic treatment, stir, obtain polylactic acid fiber solution;

[0027] In the above, the mass ratio of the polylactic acid fiber to sodium alginate is 10:1-2; the mass percentage of the polylactic acid fiber in the polylactic acid fiber aqueous solution is 10%-20%, and the seaweed in the sodium alginate aqueous solution The mass percentage of sodium nitrate is 10%-20%. The average number (Mn) / average weight (Mw) coefficient of the dispersion index of the selected sodium alginate is 1.3-1.8.

[0028] In the ultrasonic treatment, the output power of the...

Embodiment 1

[0043] A preparation method of highly air-permeable aseptic packaging paper, comprising the following steps:

[0044] Polylactic acid fiber solution modification treatment: first weigh the polylactic acid fiber and add water to the polylactic acid fiber to form a 12% solution, heat it to 45°C, adjust the pH to 5.5, add 12% sodium alginate and stir for 40 minutes, The output power is 50kHz ultrasonic treatment 8min, and with 12000rpm speed stirring 20min in the stirrer, prepares the polylactic acid fiber solution;

[0045] In this embodiment, the average number (Mn) / average weight (Mw) coefficient of the dispersion index of sodium alginate selected is 1.3.

[0046] Polyester fiber solution modification treatment: under the conditions of 35°C, power 250W, and air pressure 15Pa, the polyester fiber is treated with air low-temperature plasma for 250s, then configured into a 5% solution, and heated to 55°C to adjust the pH to 3.0 , add mass percentage and be 4% carboxymethyl chito...

Embodiment 2

[0054] A preparation method of highly air-permeable aseptic packaging paper, comprising the following steps:

[0055] Polylactic acid fiber solution modification treatment: first weigh the polylactic acid fiber and add water to the polylactic acid fiber to form a 15% solution, heat it to 60°C, adjust the pH to 6.5, add 15% sodium alginate and stir for 60 minutes, The output power is 60kHz ultrasonic processing 6min, and with 16000rpm speed stirring 15min in the mixer, is prepared into polylactic acid fiber solution;

[0056] In this embodiment, the average number (Mn) / average weight (Mw) coefficient of the dispersion index of sodium alginate selected is 1.41.

[0057] Polyester fiber solution modification treatment: under the conditions of 40°C, power 300W, and air pressure 30Pa, the polyester fiber is treated with air low-temperature plasma for 200s, and then configured into a 10% solution, and heated to 65°C to adjust the pH to 4.0 , add the carboxymethyl chitosan that mass...

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Abstract

The invention discloses a preparation method of high-breathability aseptic packaging paper. The preparation method comprises the following steps: modifying a polylactic acid fiber liquid: adding sodium alginate into the polylactic acid fiber solution, and performing ultrasonic treatment; modifying a polyester fiber liquid: treating polyester fiber by an air low-temperature plasma method, adding a carboxymethyl chitosan solution, performing microwave treatment, defibering and pulping; making paper: mixing the polylactic acid fiber solution and the polyester fiber solution, adding the treated pulp, cationic konjac glucomannan, cationic polyacrylamide and silica sol to obtain a mixed solution, and shaping the mixed solution into a wet paper web; obtaining the high-breathability aseptic packaging paper: uncovering the wet paper web obtained in the paper making process, sizing, spraying a surface enhancer, and pressing by using an oil press; drying to obtain the final high-breathability aseptic packaging paper. The preparation method has the characteristics of high tearing performance, strong durability and good breathability and has relatively high surface strength and printability.

Description

technical field [0001] The invention belongs to the technical field of special paper preparation, and in particular relates to a method for preparing highly air-permeable aseptic packaging paper. Background technique [0002] Aseptic packaging is a special packaging method, mainly used in disposable packaging of medical consumables. The items in the aseptic bag must maintain sterility during use. Therefore, it is particularly important to choose appropriate packaging materials and build a sterile barrier to protect the items in the aseptic bag from contamination. [0003] Aseptic wrapping paper for medical consumables should not only have excellent strength performance, air permeability and excellent microbial barrier, meet the requirements of packaging paper for sterilization and disinfection of internal products, but also need to have high surface strength and printability , is a high value-added specialty paper. [0004] At present, in the preparation method of aseptic ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21F11/00D21F3/00D21C9/00D21H13/24D21H21/18D21H23/70D21H25/04D21H27/10
CPCD21C9/001D21F3/00D21F11/00D21H13/24D21H21/18D21H23/70D21H25/04D21H27/10
Inventor 李佩燚侯青青林春涛李新平张蒙
Owner SHAANXI UNIV OF SCI & TECH