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Preparation method of food package paper

A technology for food wrapping paper and finished products, applied in wrapping paper, wrapping paper, packaging, etc., can solve the problems of cellulose film bacteria content, strength and toughness affecting the use effect, etc., to improve hot air circulation efficiency, high heat dissipation efficiency, and speed Improved effect

Inactive Publication Date: 2016-11-02
SHAOXING CHUNMING NATURAL CELLULOSE MEMBRANE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Natural cellulose film has excellent properties such as environmental protection and non-toxicity, so it is widely used. However, when using the methods in the prior art to prepare natural cellulose film, especially food packaging paper, the bacterial content of cellulose film , strength and toughness will affect its use effect

Method used

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  • Preparation method of food package paper
  • Preparation method of food package paper
  • Preparation method of food package paper

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The preparation method of present embodiment food packaging paper, combines figure 1 The wood pulp is sequentially impregnated→pressed→crushed→aged→yellowing→dissolved→cured→coagulated in a coagulation bath→one water washing→desulfurization→rinsing→second water washing→softening→drying→high and low temperature humidity control→rolling to obtain finished product, of which:

[0035] (1) Dipping: Stir the pulp and lye to form a porridge; the concentration of lye is 235±5g / L, the mass ratio of pulp to lye is about 1:2, the immersion temperature is 50°C, and the immersion time is 30 minutes.

[0036] (2) Pressing and crushing: the porridge is sent into the press for pressing, combined with figure 2 , crushing is carried out between the bottom press roll 11 and the top press roll 12 of the press grinder 1, the top press roll 12 is provided with top press teeth 13, the top press teeth 13 are conical teeth, and the bottom press roll 11 is provided with bottom press teeth. Pr...

Embodiment 2

[0044] The setting and working principle of this embodiment are the same as that of Embodiment 1, the difference is that:

[0045] Post-processing: coagulate and regenerate the matured viscose in a coagulation bath to form a cellulose film, which is followed by high-temperature water washing, high-temperature desulfurization, normal temperature water washing 1, normal temperature rinsing, normal temperature water washing 2, after softening, drying, high and low temperature adjustment Wet, coiling is the finished product; the coagulation bath is a mixed solution of sulfuric acid with a concentration of 150g / L and sodium sulfate with a concentration of 235g / L, the temperature is 51°C, and the film-forming time is 6s; after the film is formed, the paper is milky white and opaque. Wash at high temperature until the paper surface is transparent. This time, the washing temperature is 85°C, and the washing time is 50s; then high-temperature desulfurization, the concentration of the de...

Embodiment 3

[0047] The setting and working principle of this embodiment are the same as that of Embodiment 1, the difference is that:

[0048] Post-processing: coagulate and regenerate the matured viscose in a coagulation bath to form a cellulose film, which is followed by high-temperature water washing, high-temperature desulfurization, normal temperature water washing 1, normal temperature rinsing, normal temperature water washing 2, after softening, drying, high and low temperature adjustment Wet, coiling is the finished product; the coagulation bath is a mixed solution of sulfuric acid with a concentration of 150g / L and sodium sulfate with a concentration of 235g / L, the temperature is 51°C, and the film-forming time is 6s; after the film is formed, the paper is milky white and opaque. Wash at high temperature until the paper surface is transparent. This time, the washing temperature is 85°C, and the washing time is 50s; then high-temperature desulfurization, the concentration of the de...

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Abstract

The invention relates to a preparation method of a food package paper and belongs to the technical field of inorganic substance or its complex-based treatment on fibers, yarn, wires, fabrics or their fiber products. The preparation method utilizes pulp as a raw material and comprises dipping, squeezing, crushing, aging, yellowing, dissolution, curing, solidification in a solidification bath, primary washing, desulphurization, rinsing, secondary washing, softening, drying and rolling. The preparation method is used for cellulose membrane food package paper processing and has the advantages of stable mechanical properties and high safety.

Description

technical field [0001] The invention relates to a method for preparing food packaging paper, and belongs to the technical field of treating fibers, yarns, threads, fabrics or fiber products made of these materials with inorganic substances or their complexes. Background technique [0002] Natural cellulose film has excellent properties such as environmental protection and non-toxicity, so it is widely used. However, when using the methods in the prior art to prepare natural cellulose film, especially food packaging paper, the bacterial content of cellulose film , strength and toughness will affect its use effect. [0003] Based on this, this application is made. Contents of the invention [0004] In order to overcome the above-mentioned defects in the prior art, the present application provides a method for preparing food wrapping paper which is environmentally friendly and hygienic and has good performance. [0005] In order to achieve the above object, the technical sc...

Claims

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Application Information

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IPC IPC(8): D21H27/10D21J1/00
CPCD21H27/10D21J1/00
Inventor 汪兴华章海林干伟岗胡之荣宣锋张立中
Owner SHAOXING CHUNMING NATURAL CELLULOSE MEMBRANE CO LTD
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