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Modified additive for paper pulp molded products, preparation method and application thereof

A technology of molded products and additives, which is applied in the process of adding pulp raw materials, adding non-fiber pulp, paper, etc., can solve problems that do not conform to the development concept of green environmental protection, increase production costs, and cumbersome operations, so as to save time, cost and Equipment cost, reduced chip shedding, simple preparation

Active Publication Date: 2020-01-10
佛山市顺德区文达创盈包装材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method can effectively improve the surface properties of paper-plastic products, there are many procedures for surface treatment, and corresponding equipment needs to be added for this purpose, which is not only cumbersome to operate, but also increases production costs.
In addition, the most important thing is that the materials used for the surface treatment of paper and plastic products may not be able to be easily and easily degraded harmlessly, which does not conform to the development concept of green environmental protection

Method used

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  • Modified additive for paper pulp molded products, preparation method and application thereof
  • Modified additive for paper pulp molded products, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 1. Preparation of cationic starch

[0026] (1) According to the mass ratio of dry cornstarch: 3-chloro-2-hydroxypropyltrimethylammonium chloride (CTA) = 1:0.45, take a certain amount according to the molar ratio of CTA: sodium hydroxide = 1: 1.2 amount of dry cornstarch CTA and sodium hydroxide;

[0027] (2) Activate sodium hydroxide, CTA and a small amount of water for 10 minutes at a temperature lower than 10°C;

[0028] (3) Spray the activated medicine into cornstarch, stir evenly, and pre-dry at 50°C for 1 hour;

[0029] (4) Take out the product obtained in step (3), put it in an airtight container after crushing, and keep it warm at 85° C. for 4 hours to obtain a semi-finished product;

[0030] (5) Utilize 80% ethanol solution to wash the semi-finished product until the filtered washing liquid does not contain Cl - , dried to prepare the cationic starch of this embodiment.

[0031] 2. Preparation of modified additives for pulp moldings

[0032] In this example...

Embodiment 2

[0051] 1. Preparation of cationic starch

[0052] (1) According to the mass ratio of dry corn starch: N-(2,3-epoxypropyl) trimethyl ammonium chloride (GTA) = 1:0.15, according to the molar ratio of GTA: sodium hydroxide = 1:1 Take a certain amount of dry cornstarch, GTA and sodium hydroxide;

[0053] (2) Sodium hydroxide is dissolved in an appropriate amount of water, and it is cooled;

[0054] (3) GTA is added in the sodium hydroxide solution, fully dissolved;

[0055] (4) Add cornstarch to the solution obtained in step (3), fully stir until evenly mixed;

[0056] (5) Move the mixed solution prepared in step (4) into an oven and keep it warm at 80° C. for 4 hours to obtain a white semi-finished product;

[0057] (6) Utilize 80% ethanol solution to wash the semi-finished product until the filtered washing liquid does not contain Cl - , dried to prepare the cationic starch of this embodiment.

[0058] 2. Preparation of modified additives for pulp moldings

[0059] In this...

Embodiment 3

[0078] 1. Preparation of cationic starch

[0079] (1) According to the mass ratio of dry tapioca starch: N-(2,3-epoxypropyl) trimethyl ammonium chloride (GTA) = 1:0.15, according to the molar ratio of GTA: sodium hydroxide = 1:1 Take a certain amount of dry tapioca starch, GTA and sodium hydroxide;

[0080] (2) Sodium hydroxide is dissolved in an appropriate amount of water, and it is cooled;

[0081] (3) GTA is added in the sodium hydroxide solution, fully dissolved;

[0082] (4) Add tapioca starch in the solution gained in step (3), fully stir until evenly mixed;

[0083] (5) Move the mixed solution prepared in step (4) into an oven and keep it warm at 80° C. for 4 hours to obtain a white semi-finished product;

[0084] (6) Utilize 80% ethanol solution to wash the semi-finished product until the filtered washing liquid does not contain Cl - , dried to prepare the cationic starch of this embodiment.

[0085] 2. Preparation of modified additives for pulp moldings

[0086...

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Abstract

The invention provides a modified additive for pulp molded products, which comprises 8-10% of cationic starch and 5-7% of gloss oil according to mass percentage. The modified additive of the paper pulp molded product prepared by the invention is applied to the surface of the paper pulp molded product, the modified additive penetrates into the inside of the paper pulp molded product from the outside to the inside, a layer of dense oil wax film can be formed on the surface of the paper pulp molded product, the adhesive force of fibers, fillers on the surface and the inside of the product and among the fibers, fillers and each other are effectively improved, the fibers on the surface of the paper can be better combined without generating chips easily, and the abrasion resistance of the paperpulp molded product is obviously improved.

Description

technical field [0001] The invention belongs to the field of pulp molded product processing, and in particular relates to a pulp molded product modification additive, a preparation method and application thereof. Background technique [0002] In recent years, pulp molded products are widely used as an emerging ideal environmental protection packaging product due to its wide range of raw materials, no pollution, superior packaging performance and renewable environmental protection characteristics, and are gradually replacing wood and plastic products to a certain extent. In the fields of lunch box tableware and industrial cushioning packaging. However, pulp molded products are generally prone to lint and powder loss. If the density of the pulp molded product body is not high enough, or the pulp molded product has undergone repeated collisions and repeated frictions, obvious chipping will generally occur. . The generation of shavings destroys the body structure of pulp molde...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H19/14D21H21/14C08B31/12D21J3/00D21H23/50D21H25/06
CPCD21H19/14D21H21/14C08B31/125D21J3/00D21H23/50D21H25/06
Inventor 关泽殷
Owner 佛山市顺德区文达创盈包装材料科技有限公司
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