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Method for preparing ink barrier layer from sugarcane waste residue

A technology of ink barrier layer and bagasse, applied in coating, rayon manufacturing, cellulose coating, etc., can solve the problem of less research and achieve the effect of degradability, easy degradability and environmental friendliness

Active Publication Date: 2020-05-26
DONGGUAN POLYTECHNIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, in order to improve the utilization rate of secondary fibers in food packaging paper under the premise of ensuring that packaged food is not contaminated by MOAH, it is quite meaningful to develop a functional barrier coating layer that can replace the commonly used plastic barrier layer. There is very little research on this

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Bagasse prepares the method for ink barrier layer, comprises the steps:

[0030] A. Preparation of bagasse cellulose: crush bagasse to 60 mesh, then mix water, bagasse and biological enzyme in a weight ratio of 1100:900:13, heat up to 50°C, react for 4 hours, squeeze and filter After drying, bagasse cellulose is obtained;

[0031] B. Preparation of nano-carbon spheres: pre-carbonize a part of bagasse cellulose in an inert gas atmosphere to obtain a carbon precursor, immerse the carbon precursor in an aqueous solution of potassium hydroxide with a mass concentration of 10% for 1 hour, and then take out the carbon The precursor is freeze-dried, and then the freeze-dried carbon precursor is placed in an inert gas atmosphere for activation treatment to obtain carbon nanospheres;

[0032] C. Preparation of spray stock solution: Add another part of bagasse cellulose into the ionic solvent, heat up to 85°C for dissolution, and after the bagasse cellulose is completely dissolv...

Embodiment 2

[0046] Bagasse prepares the method for ink barrier layer, comprises the steps:

[0047] A. Preparation of bagasse cellulose: crush bagasse to 40 mesh, then mix water, bagasse and biological enzyme in a weight ratio of 1000:800:10, heat up to 40°C, react for 2 hours, press and filter After drying, bagasse cellulose is obtained;

[0048] B. Preparation of nano-carbon spheres: pre-carbonize a part of bagasse cellulose in an inert gas atmosphere to obtain a carbon precursor, immerse the carbon precursor in an aqueous potassium hydroxide solution with a mass concentration of 8% for 0.5h, and then take it out The carbon precursor is freeze-dried, and then the freeze-dried carbon precursor is placed in an inert gas atmosphere for activation treatment to obtain carbon nanospheres;

[0049] C. Preparation of spray stock solution: add another part of bagasse cellulose into the ionic solvent, heat up to 80°C to dissolve, and after the bagasse cellulose is completely dissolved, a bagasse...

Embodiment 3

[0063] Bagasse prepares the method for ink barrier layer, comprises the steps:

[0064] A. Preparation of bagasse cellulose: crush bagasse to 80 mesh, then mix water, bagasse and biological enzyme in a weight ratio of 1200:1000:16, heat up to 60°C, react for 6 hours, squeeze and filter After drying, bagasse cellulose is obtained;

[0065] B. Preparation of nano-carbon spheres: pre-carbonize a part of bagasse cellulose in an inert gas atmosphere to obtain a carbon precursor, immerse the carbon precursor in an aqueous potassium hydroxide solution with a mass concentration of 12% for 1.5 hours, and then take it out The carbon precursor is freeze-dried, and then the freeze-dried carbon precursor is placed in an inert gas atmosphere for activation treatment to obtain carbon nanospheres;

[0066] C. Preparation of spray stock solution: Add another part of bagasse cellulose into the ionic solvent, heat up to 90°C for dissolution, and after the bagasse cellulose is completely dissolv...

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Abstract

The invention relates to the technical field of packaging materials, specifically to a method for preparing an ink barrier layer from a sugarcane waste residue. The method includes the following steps: A, preparation of bagasse cellulose; B, preparation of carbon nanospheres; C, preparation of a spray stock solution; D, preparation of a composite fiber; E, preparation of cellulose sol; and F, preparation of the barrier layer. The method uses bagasse as a raw material to obtain the bagasse cellulose and the further prepared carbon nanospheres, and uses an electrostatic spray technology to coatthe carbon nanospheres with the bagasse cellulose. The formed composite fiber has the MOAH blocking function of the carbon nanospheres and the mechanical properties of a formatic reticularis fiber, and can further form a cellulose film having good tensile strength and elongation with raw materials such as gelatin, soluble starch, a plasticizer, tween and a filling material.

Description

technical field [0001] The invention relates to the technical field of packaging materials, in particular to a method for preparing an ink barrier layer from sugarcane waste residue. Background technique [0002] Mineral Oil of Aromatic Hydrocarbons (MOAH) is a carcinogenic, mutagenic substance and is commonly found in secondary fiber (especially those containing printing inks)-based packaging paper. The findings of the EU Food Safety Authority have confirmed that during food storage or transportation, MOAH in food packaging or outer packaging paper will permeate through the inner packaging film after only 2-3 months or less Enters the gas phase and migrates to the surface / inside of the food. It is estimated that if the shelf life of food is approaching, the migration rate of MOAH in packaging paper to food will reach 65%-85%. In addition, due to the semi-volatile and lipophilic nature of MOAH, in addition to aluminum foil packaging, the use of polyethylene, polypropylene / ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D101/02C09D7/61C09D7/65D01F2/00D01F1/10
CPCC08L2201/06C08L2205/03C09D7/61C09D7/65C09D7/70C09D101/02D01F1/10D01F2/00C08L89/00C08L3/02C08K7/18
Inventor 薛美贵李小东
Owner DONGGUAN POLYTECHNIC
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