Water varnish for protection of printable aluminum foil for drug packing and preparation method of water varnish

A water-based, aluminum foil technology, applied in coatings, polyester coatings, polyurea/polyurethane coatings, etc., can solve the problems of pungent odor of small molecule butanol, high environmental humidity requirements, affecting the speed of the drug packaging machine, etc. The surface printing has the advantages of strong adaptability, simple operation and low production cost.

Inactive Publication Date: 2017-04-19
SHANGHAI WEIKAI CHEM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Among the existing OP protectants on the market, butylated amino resin and hydroxyacrylic acid are the most used, but this system has high requirements for environmental humidity, and the relative humidity during coating should not exceed 70%, otherwise the adhesion of the OP protectant to aluminum foil will decrease; At the same time, the small molecule butanol released by the system during the crosslinking and curing process is extremely pungent, and the temperature resistance is low, generally less than 250°C, which greatly affects the speed of the packaging machine

Method used

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  • Water varnish for protection of printable aluminum foil for drug packing and preparation method of water varnish
  • Water varnish for protection of printable aluminum foil for drug packing and preparation method of water varnish
  • Water varnish for protection of printable aluminum foil for drug packing and preparation method of water varnish

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A kind of printing that this embodiment relates to is used for the preparation method of protective water-based varnish of pharmaceutical packaging aluminum foil, and the method comprises the following process steps:

[0039] (1) All the emulsions, i.e. 40Kg of polyolefin emulsion, 20Kg of polyester emulsion, 2Kg of water-soluble amino resin, and 9Kg of water-based epoxy are added to the reaction kettle successively, and kept stirring;

[0040] (2) After pre-mixing all the solvents, namely 12Kg of water, 12Kg of diluent alcohol, and 4.3Kg of polyols, slowly add the solvent to the reaction kettle while keeping stirring, and stir for about 1 hour;

[0041] (3) After stirring evenly, slowly add 0.2Kg of additives and 0.5Kg of tackifier, and keep stirring at high speed for about 30 minutes;

[0042] (4) When all the components are mixed evenly, stop the machine and mature for more than 12 hours;

[0043] (5) Measure the solid content and adjust to 25%;

[0044] (6) Stir s...

Embodiment 2

[0046] This embodiment relates to a method for preparing a water-based varnish that can be printed on the surface of a PTP aluminum foil for pharmaceutical blister packaging. The method includes the following process steps:

[0047] (1) First all the emulsions, i.e. polyolefin emulsion 50Kg, polyester emulsion 10Kg, water-based blocked isocyanate 5Kg, water-soluble amino resin 2Kg are added in the reactor successively, and keep stirring;

[0048] (2) After premixing all the solvents, namely 13Kg of water, 13Kg of diluent alcohol, and 6Kg of polyol, slowly add the solvent into the reaction kettle while keeping stirring, and stir for about 1 hour;

[0049] (3) After stirring evenly, slowly add 0.5Kg of additives and 0.5Kg of tackifier, and keep stirring at high speed for about 30 minutes;

[0050] (4) When all the components are mixed evenly, stop the machine and mature for more than 12 hours;

[0051] (5) Measure the solid content and adjust to 25%;

[0052] (6) Stir slowly f...

Embodiment 3

[0054] This embodiment relates to a method for preparing a water-based varnish that can be printed on the surface of a PTP aluminum foil for pharmaceutical blister packaging. The method includes the following process steps:

[0055] (1) First all the emulsions, i.e. polyolefin emulsion 45Kg, polyester emulsion 15Kg, water-based blocked isocyanate 3Kg, water-soluble amino resin 5Kg, water-based epoxy resin emulsion 3Kg are added in the reactor successively, and keep stirring;

[0056] (2) After premixing all the solvents, namely 12.4Kg of water, 12Kg of diluent alcohol, and 4Kg of polyols, slowly add the solvent to the reaction kettle while keeping stirring, and stir for about 1 hour;

[0057] (3) After stirring evenly, slowly add 0.1Kg of additives and 0.5Kg of tackifier, and keep stirring at high speed for about 30 minutes;

[0058] (4) When all the components are mixed evenly, stop the machine and mature for more than 12 hours;

[0059] (5) Measure the solid content and adj...

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Abstract

The invention discloses water varnish for protection of a printable aluminum foil for drug packing and a preparation method of the water varnish. The water varnish comprises the following components by weight percentage: 10-54% of polyolefin emulsion, 10-40% of polyester emulsion, 0-10% of water-based blocked isocyanates, 1-5% of water soluble amino resin, 0-10% of water-based epoxy resin, 0.1-0.5% of auxiliary, 0.5-1% of viscosifier, 4-10% of polyhydric alcohol, 12-40% of alcohol diluent and 12-40% of water. The curing speed of the water varnish is high, and the heat resistance is high when a bubble cap and the aluminum foil coated with a VC layer are subjected to heat sealing; the surface tension (smoothness) can be adjusted within a certain scope, so that different surface printing requirements can be met, and the surface printing adaptability is high; an adhesion force between the water varnish and the surface of the aluminum foil is high, the transparency is good, the friction resistance is high, and the solvent resistance is good.

Description

technical field [0001] The invention belongs to the technical field of protective varnish, and in particular relates to a water-based varnish which can be printed and used for protecting aluminum foil of pharmaceutical packaging and a preparation method thereof. Background technique [0002] In the field of pharmaceutical packaging, due to the upgrading of pharmaceutical packaging materials, blister packaging is replacing the original packaging such as glass bottles and iron containers. Drug blister packaging is also called blister packaging, referred to as PTP (Press Through Package). This packaging form has many advantages: 1. Provide patients with a one-time dose of medicines, which is convenient and economical 2. Good protection for medicines, high production efficiency, and relatively low cost 3. Small storage space, light weight, convenient transportation, and safety performance it is good. 4. The aluminum foil used for blister packaging can be printed into various c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04C09D167/00C09D4/06C09D4/02C09D7/12
CPCC08L2201/08C08L2205/025C08L2205/035C09D4/06C09D167/00C09D175/04C09D7/63C09D7/65C08L75/04C08L67/00C08L63/00C08L61/20
Inventor 董海普李明阳
Owner SHANGHAI WEIKAI CHEM
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