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Preparation method for plastic kitchen utensils with transfer-resistant colorant

A technology of resistance to migration and colorants, applied in the field of kitchen utensils, can solve the problems of high cost, complex process, unfavorable application, etc., to reduce production costs and enterprise losses, optimize the dispersion process, and improve migration resistance and solvent resistance. Effect

Inactive Publication Date: 2012-07-04
TAIZHOU ENTRY EXIT INSPECTION & QUARANTINE BUREAU PEOPLES REPUBLIC OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The color masterbatch is completely combined with the carrier resin after mixing, and its color compatibility is obviously better than that of toner coloring, but it has the disadvantages of high cost and complicated process, which is not conducive to the application in small batch production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A preparation method for colorant migration-resistant plastic tableware, the method comprising the steps of:

[0026] Step 1. Wetting of polypropylene:

[0027] Add 50kg of dry polypropylene granules and 0.02kg of liquid paraffin into the mixing cylinder, and mix and stir for 20min at a speed of 50r / min to obtain wet polypropylene;

[0028] Step 2, the establishment of pigment hyperdispersion system:

[0029] Pigment hyperdispersion system for transparent products: Add 100kg of wet polypropylene, 0.01kg of azo lake pigment red 53:1 (CAS: 5160-02-1), and 0.15kg of hyperdispersant Solsperse 17940 into the mixing cylinder, at a speed of Mix and stir for 15min at 70r / min;

[0030] Solid color product pigment hyperdispersion system: add wet 100kg polypropylene, 0.1kg azo lake pigment red 53:1 (CAS: 5160-02-1), 1.5kg hyperdispersant Solsperse 17940 into the mixing cylinder, Mix and stir for 15min under the condition of 70r / min;

[0031] Step 3. Preparation of plastic tabl...

Embodiment 2

[0033] The preparation method is the same as Example 1, with the following differences:

[0034] Add 37.5kg of dry polypropylene granules and 0.01kg of liquid paraffin into the mixing cylinder, and mix and stir for 20min at a speed of 50r / min to obtain wet polypropylene;

[0035] In the establishment of the pigment hyperdispersion system of transparent products: add the wet 100kg polypropylene, 0.01kg azo lake pigment red 48:1 (CAS 7585-41-3), and 0.15kg hyperdispersant Solsperse 17000 into the mixing cylinder , mixed and stirred for 30min at a speed of 50r / min;

[0036] In the establishment of the pigment hyperdispersion system of solid color products: add the wet 100kg polypropylene, 0.1kg azo lake pigment red 48:1 (CAS 7585-41-3), and 1.5kg hyperdispersant Solsperse 17000 to the mixture In the cylinder, mix and stir for 15min at a speed of 70r / min;

Embodiment 3

[0038] The preparation method is the same as Example 1, with the following differences:

[0039] Add 50kg of dry polypropylene granules and 0.01kg of liquid paraffin into the mixing cylinder, and mix and stir for 20min at a speed of 50r / min to obtain wet polypropylene;

[0040]In the establishment of a pigment hyperdispersion system for transparent products: add 100kg of wet polypropylene, 0.01kg of heterocyclic pigment red 122 (CAS 16043-40-6), and 0.15kg of hyperdispersant Solsperse 21000 into the mixing cylinder, and at a speed of 70r Mix and stir for 15min under the condition of / min;

[0041] In the establishment of the pigment hyperdispersion system of solid color products: add wet 100kg polypropylene, 0.1kg heterocyclic pigment red 122 (CAS 16043-40-6), and 1.5kg hyperdispersant Solsperse 21000 into the mixing cylinder, at a speed of Mix and stir for 5min at 80r / min;

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PUM

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Abstract

The invention discloses a preparation method for plastic kitchen utensils with transfer-resistant colorant. The method comprises the following steps of: a) adding dried polypropylene particles and liquid paraffin in a mass ratio of (2,500:1)-(5,000-1) into a material mixing cylinder, and mixing and stirring to obtain wet polypropylene; b) adding the wet polypropylene particles, pigment, and a superdispersant in a mass ratio of (5,000:1:10)-(50,000:1:20) into the material mixing cylinder, and mixing and stirring to establish a transparent product pigment super-dispersion system; adding the wet polypropylene particles, the pigment, and the superdispersant in a mass ratio of (500:1:10)-(5,000:1:20) into the material mixing cylinder, and mixing and stirring to establish a solid color product pigment super-dispersion system; and c) pre-heating and drying a mixture in the material mixing cylinder in a material drying cylinder at the temperature of between 20 and 25 DEG C for 4 to 24 hours, injecting the preheated mixture into an injection molding machine and performing injection molding to obtain the plastic kitchen utensils. The colorant of the prepared plastic kitchen utensils is high in transfer resistance, and product yield is improved.

Description

technical field [0001] The invention belongs to the technical field of kitchen utensils, and in particular relates to a method for preparing colorant migration-resistant plastic kitchen utensils. Background technique [0002] The "Food Safety Law" promulgated by my country in 2009 has clearly included plastic tableware and kitchen utensils and other tools and equipment used in food production and operation into the scope of food. Migrating to food, or harmful substances migrating to food, the composition is within the limit and will not harm the human body. As a common low-molecular additive for plastic tableware and kitchenware, colorants increase the aesthetic performance of plastic tableware and kitchenware, but there is a high risk of migration during use. The European Union, the United States, Japan and other countries and regions have set specific limit requirements for the migration of toxic and harmful substances in plastic tableware and kitchenware. According to the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J3/21C08L23/12C08K5/01B29C45/76
Inventor 任剑平潜飞池杨武刘艇飞于雪涛
Owner TAIZHOU ENTRY EXIT INSPECTION & QUARANTINE BUREAU PEOPLES REPUBLIC OF CHINA
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