Nanocrystalline antibacterial packaging paper and preparation method

A nanocrystalline and packaging paper technology, applied in paper, papermaking, physical treatment of paper, etc., can solve the problems of easy shedding of antibacterial agents and poor antibacterial effect, achieve excellent antibacterial effect, reduce the use of organic adhesives, and be resistant to breakage. Good degree and strength

Inactive Publication Date: 2020-09-01
CHENDU NEW KELI CHEM SCI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In view of the defects that the antibacterial agent of antibacterial wrapping paper is easy to fall off, the antibacterial effect is poor, and a large amount of organic adhesives are required to assist in coating on the surface, the present invention proposes a nanocrystalline antibacterial wrapping paper and its preparation method, and involves specific technical solutions as follows:

Method used

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  • Nanocrystalline antibacterial packaging paper and preparation method
  • Nanocrystalline antibacterial packaging paper and preparation method
  • Nanocrystalline antibacterial packaging paper and preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0037] Preparation of S1 fine slurry: the colloidal particle size is 15nm, SiO 2 The content is 35%, Na 2Silica sol with an O content of 0.6%, xanthan gum, sodium alginate, nano-zinc oxide with a D50 particle size of 6nm, konjac glucomannan, and polyethylene glycol were added to water, and ultrasonically dispersed under 800W ultrasonic waves for 1.5h. can;

[0038] Preparation of S2 beating material: add pre-bleached and cleaned wood fiber and pre-gelatinized starch into water, stir evenly at 65°C, and then beat until the beating degree is 30-35°SR;

[0039] Preparation of S3 antibacterial coating liquid: mix the fine slurry and beating material evenly, and use a twist frame double planetary mixer for mixing. The rotation speed is 135r / min and the revolution speed is 30r / min;

[0040] Preparation of S4 nanocrystalline antibacterial wrapping paper: at 70g / m 2 The food packaging paper is used as the base paper. The base paper is fed into the coating machine, and the antibact...

Embodiment 2

[0045] Preparation of S1 fine slurry: the colloidal particle size is 10nm, SiO 2 The content is 30%, Na 2 Silica sol with an O content of 0.01%, xanthan gum, sodium alginate, nano-zinc oxide with a D50 particle size of 4nm, konjac glucomannan, and polyethylene glycol were added to water, and ultrasonically dispersed under 500W ultrasonic waves for 1h, that is Can;

[0046] Preparation of S2 beating material: add pre-bleached and cleaned wood fiber and pre-gelatinized starch into water, stir evenly at 60°C, and then beat until the beating degree is 30-35°SR;

[0047] Preparation of S3 antibacterial coating liquid: Mix the fine slurry and beating material evenly, and use a twist frame double planetary mixer for mixing. The rotation speed is 120r / min and the revolution speed is 20r / min;

[0048] Preparation of S4 nanocrystalline antibacterial wrapping paper: at 60g / m 2 The food wrapping paper is the base paper. The base paper is fed into the coating machine, and the antibacte...

Embodiment 3

[0053] Preparation of S1 fine slurry: the colloidal particle size is 12nm, SiO 2 The content is 32%, Na 2 Silica sol with an O content of 0.3%, xanthan gum, sodium alginate, nano-zinc oxide with a D50 particle size of 5nm, konjac glucomannan, and polyethylene glycol were added to water, and ultrasonically dispersed under 600W ultrasonic waves for 1h, that is Can;

[0054] Preparation of S2 beating material: add pre-bleached and cleaned wood fiber and pre-gelatinized starch into water, stir evenly at 62°C, and then beat until the beating degree is 30-35°SR;

[0055] Preparation of S3 antibacterial coating liquid: Mix the fine slurry and beating material evenly, and use a twist frame double planetary mixer for mixing. The low-speed stirring part adopts a rotation speed of 60r / min and a revolution speed of 20r / min. The rotation speed is 150r / min and the revolution speed is 20r / min;

[0056] Preparation of S4 nanocrystalline antibacterial wrapping paper: at 65g / m 2 The food pa...

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Abstract

The invention provides a nanocrystalline antibacterial packaging paper and a preparation method thereof. Silica sol, xanthan gum, sodium alginate, nanocrystals, konjac glucomannan, polyethylene glycoland water are subjected to ultrasonic dispersion to obtain fine pulp, wood fibers, pre-gelatinized starch and water are mixed to prepare a pulping material, then the pulp and the pulping material aremixed to prepare an antibacterial coating solution, and finally the antibacterial coating solution is blade-coated and pressed on the surface of base paper to obtain the nanocrystalline antibacterialpackaging paper. The nanocrystals are dispersed in the silica sol, then are uniformly dispersed in the paper pulp, and are combined on the surface of the base paper through blade coating and wet pressing, so that not only is the use of an organic adhesive reduced, but also the nano-crystals are firmly bonded by silica sol and do not fall off, the antibacterial effect can be fully exerted, and meanwhile, the coating wood pulp ensures that the packaging paper is better in bursting strength and strength and meets packaging requirements.

Description

technical field [0001] The invention relates to the field of packaging materials, in particular to antibacterial packaging materials, in particular to a nanocrystalline antibacterial packaging paper and a preparation method. Background technique [0002] With the development of functionalization, packaging paper is widely used in many industries, especially in some packaging fields with high hygienic requirements. Antibacterial packaging paper is a kind of packaging paper with antibacterial function, which can protect food from microorganisms during storage, transportation and storage, so as to improve the shelf life and shelf life of food; at the same time, it requires smooth paper, high tensile strength, suitable for printing and food Hygienic requirements, is a special paper with high added value. Such as tobacco packaging, pharmaceutical packaging, food packaging, etc., require packaging paper to have good antibacterial properties. [0003] At present, antibacterial pa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H17/02D21H17/21D21H17/24D21H17/28D21H17/36D21H17/67D21H17/68D21H21/36D21H23/32D21H25/04
CPCD21H17/02D21H17/21D21H17/24D21H17/28D21H17/36D21H17/67D21H17/675D21H17/68D21H21/36D21H23/32D21H25/04
Inventor 陈庆曾军堂司文彬白涛李钧
Owner CHENDU NEW KELI CHEM SCI CO LTD
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