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Water-based paint capable of replacing coating film, preparation method and packaging box

A water-based paint and film-covering technology, which is applied to paper coating, coating, fiber raw material treatment, etc., can solve the problems of inability to regenerate, high cost, environmental pollution, etc., and achieve the promotion of recycling and reuse, the reduction of surface friction coefficient, The effect of reducing production costs

Inactive Publication Date: 2020-11-17
ZHONGSHAN TIAN JIA PAPER PROD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the applicant found that the packaging boxes currently on the market are made of paper materials and do not have waterproof function. Therefore, it is necessary to cover the packaging box with a layer of plastic film to prevent moisture from entering the box body and prevent the product from being damp. Mildew; however, this method not only has high cost and complicated film covering process; but also adopts this method to pollute the environment more and more seriously, because in the case of environmental protection, there will be a large number of paper packaging and carton packaging Use, use paper with film coating technology, the paper after use cannot be recycled, and the unusable waste paper can only be treated as garbage, and the toxic substances in the film will cause secondary pollution to the environment

Method used

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  • Water-based paint capable of replacing coating film, preparation method and packaging box

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preparation example Construction

[0025] Such as figure 1 Shown, the preparation method of the water-based coating that replaces film of the present invention specifically comprises the following steps:

[0026] Step S100. Mix styrene, methyl methacrylate, butyl acrylate, and hydroxypropyl acrylate according to the formula ratio to obtain an oil phase monomer mixture, dissolve acrylic acid in quantitative deionized water, adjust the pH to 5, and obtain a water phase mixture.

[0027] Step S200. Add emulsifier, a certain amount of deionized water into the reactor, stir evenly, then add a certain amount of oil phase monomer mixture and water phase mixture, stir evenly, and heat up, then add initiator solution, modify Nano calcium carbonate and wax emulsion, and carry out temperature-controlled reaction (specifically: heat up to 50°C, the reaction temperature of the temperature-controlled reaction is controlled at 80°C-85°C, and the reaction time is 2 hours).

[0028] Step S300. Use the semi-continuous method t...

Embodiment 1

[0033] Step 1. Mix 30 parts of styrene, 10 parts of methyl methacrylate, 20 parts of butyl acrylate, and 20 parts of hydroxypropyl acrylate according to the formula ratio to obtain an oil phase monomer mixture. Dissolve 35 parts of acrylic acid in 60 parts to remove In ionized water, adjust the pH to 5 to obtain a water phase mixture.

[0034]Step 2. Add 3 parts of the mixed system of sodium lauryl sulfate and alkylphenol polyoxyethylene ether in the reactor, the mass ratio is 1:2, 20 parts of deionized water, stir evenly, add quantitative oil phase and For the water phase, stir evenly, heat up to 50°C, add 2.5 parts of ammonium persulfate as an initiator solution, and 0.4 parts of modified nano-calcium carbonate, control the reaction temperature at 80-85°C, and react for 2 hours.

[0035] Step 3. Use the semi-continuous method to drop the remaining oil phase and water phase, and control the reflux rate by adjusting the dropping speed. The monomer is added within 1.5-2.5 hours...

Embodiment 2

[0038] Step 1. Mix 40 parts of styrene, 7 parts of methyl methacrylate, 18 parts of butyl acrylate, and 15 parts of hydroxypropyl acrylate according to the formula ratio to obtain an oil phase monomer mixture. Dissolve 40 parts of acrylic acid in 65 parts to remove In ionized water, adjust the pH to 5 to obtain an aqueous phase mixture.

[0039] Step 2. Add 3 parts of the mixed system of sodium lauryl sulfate and alkylphenol polyoxyethylene ether in the reactor, the mass ratio is 1:2, 20 parts of deionized water, stir evenly, add quantitative oil phase and Water phase, stir well, heat up to 50°C, add 2 parts of ammonium persulfate initiator solution, 0.3 part of modified nano-calcium carbonate, control the reaction temperature at 80-85°C, and react for 2 hours

[0040] Step 3. The remaining oil phase and water phase are added dropwise by a semi-continuous method, and the reflux is controlled by adjusting the drop rate, and the monomer is added within 1.5-2.5 hours. After the ...

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Abstract

The invention relates to water-based paint replacing a coating film, a preparation method and a packaging box. The water-based paint is prepared from an oil-phase monomer mixture, a water-phase mixture, an emulsifier, an initiator solution, nano calcium carbonate, wax emulsion, deionized water, a mildew-proof antibacterial agent and a buffering agent, wherein the oil-phase monomer mixture is prepared by mixing styrene, methyl methacrylate, butyl acrylate and hydroxypropyl acrylate, the water-phase mixture is prepared by dissolving acrylic acid in a certain amount of deionized water, and the pHvalue of the water-phase mixture is equal to 5. When the water-based paint is smeared on the surface of a packaging box, a layer of waterproof film with protection, scratch resistance, wear resistance and waterproof performance can be formed, a plastic film used in the traditional technology can be completely replaced, the production cost is reduced, the recycling of paper is promoted, and the water-based paint is suitable for various packaging boxes for beer, fruits and vegetables, gift boxes and the like, and is wide in application range.

Description

technical field [0001] The invention belongs to the technical field of packing box waterproofing, and in particular relates to a water-based paint which replaces film covering, a preparation method and a packing box. Background technique [0002] Packing boxes are widely used in all walks of life to protect products from damage during transportation. For some fragile and moisture-proof products, such as fruits and vegetables, food, etc. However, the applicant found that the packaging boxes currently on the market are made of paper materials and do not have waterproof function. Therefore, it is necessary to cover the packaging box with a layer of plastic film to prevent moisture from entering the box body and prevent the product from being damp. Mildew; however, this method not only has high cost and complicated film covering process; but also adopts this method to pollute the environment more and more seriously, because in the case of environmental protection, there will be ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H19/10D21H21/36D21H21/14D21H17/66D21H17/37D21H17/09C08F212/08C08F220/14C08F220/18C08F220/20
CPCD21H19/10D21H21/36D21H21/14D21H17/74D21H17/37D21H17/66D21H17/09C08F212/08C08F220/14C08F220/1804C08F220/20
Inventor 陈挺谭康梅谭振宇朱华杨孙小玲
Owner ZHONGSHAN TIAN JIA PAPER PROD