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A kind of cellulose film for blocking ink and preparation method thereof

A technology of cellulose film and microcrystalline cellulose, which can be used in non-fiber pulp addition, fiber raw material processing, papermaking, etc., and can solve problems such as less research.

Active Publication Date: 2020-10-23
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

[0035] A kind of cellulose film that is used for blocking ink, is made by the raw material of following weight part:

[0036] Composite particles 70 parts

[0037] 15 parts gelatin

[0038] 8 parts soluble starch

[0039] 4 parts plasticizer

[0040] Thickener 6 parts

[0041] Antioxidant 7 servings

[0042] Filling 15 servings

[0043] Tween 4 servings

[0044] 50 parts of water

[0045] The composite particle is composed of nano zinc oxide and microcrystalline cellulose loaded with nano zinc oxide.

[0046] Wherein, the preparation method of the composite particle includes the following steps: adding nano-zinc oxide and microcrystalline cellulose into deionized water, ultrasonically dispersing for 3 hours, centrifugal washing, and drying to obtain the composite particle, wherein the nano-oxidized The mass ratio of zinc, microcrystalline cellulose and deionized water is 1:9:95.

[0047] Wherein, the particle size distribution D50 of the microcrystalline cellulose is ...

Embodiment 2

[0056] A kind of cellulose film that is used for blocking ink, is made by the raw material of following weight part:

[0057] Composite particles 60 parts

[0058] 10 parts gelatin

[0059] 6 parts soluble starch

[0060] 2 parts plasticizer

[0061] Thickener 4 parts

[0062] Antioxidant 4 parts

[0063] Filling 10 servings

[0064] Tween 2 servings

[0065] 40 parts of water

[0066] The composite particle is composed of nano zinc oxide and microcrystalline cellulose loaded with nano zinc oxide.

[0067] Wherein, the preparation method of the composite particle includes the following steps: adding nano-zinc oxide and microcrystalline cellulose to deionized water, performing ultrasonic dispersion for 2 hours, centrifugal washing, and drying to obtain the composite particle, wherein the nano-oxidized The mass ratio of zinc, microcrystalline cellulose and deionized water is 1:6:90.

[0068] Wherein, the particle size distribution D50 of the microcrystalline cellulose i...

Embodiment 3

[0077] A kind of cellulose film that is used for blocking ink, is made by the raw material of following weight part:

[0078] Composite particles 80 parts

[0079] 20 parts gelatin

[0080] 10 parts soluble starch

[0081] Plasticizer 6 parts

[0082] Thickener 8 parts

[0083] Antioxidant 10 parts

[0084] Filling 20 servings

[0085] Tween 6 servings

[0086] 60 parts of water

[0087] The composite particle is composed of nano zinc oxide and microcrystalline cellulose loaded with nano zinc oxide.

[0088] Wherein, the preparation method of the composite particle includes the following steps: adding nano-zinc oxide and microcrystalline cellulose into deionized water, performing ultrasonic dispersion for 4 hours, centrifugal washing, and drying to obtain the composite particle, wherein the nano-oxidized The mass ratio of zinc, microcrystalline cellulose and deionized water is 1:12:100.

[0089] Wherein, the particle size distribution D50 of the microcrystalline cellu...

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Abstract

The invention relates to the technical field of packaging films and concretely relates to a cellulose film for blocking ink and a preparation method thereof, the cellulose film is prepared from composite particle, gelatin, soluble starch, a plasticizer, a thickener, an antioxidant, filler, Tween and water, and the composite particle is prepared from nanometer zinc oxide and microcrystalline cellulose loaded with nanometer zinc oxide. In order to avoid that nano zinc oxide is difficult to disperse in the cellulose membrane, the invention pre-loads nanometer zinc oxide on microcrystalline cellulose through physical dispersion, so as to greatly improve the dispersibility of nanometer zinc oxide, the mechanical properties of the formed cellulose membranes are homogeneous, and MOAH is easy to diffuse in microcrystalline cellulose, nano zinc oxide uniformly distributed on the microcrystalline cellulose can be used for separating the contact between the organic matter, so as to hinder the diffusion of MOAH in the organic matter, thus the mobility ratio of MOAH in the cellulose membranes is very low.

Description

technical field [0001] The invention relates to the technical field of packaging films, in particular to a cellulose film for blocking ink and a preparation method thereof. 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 / composite ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H19/50D21H19/52D21H19/38D21H19/46D21H19/64D21H21/14
CPCD21H19/38D21H19/46D21H19/50D21H19/52D21H19/64D21H21/14
Inventor 薛美贵李小东
Owner DONGGUAN POLYTECHNIC