High-performance paint for polypropylene cat food packaging bag

A packaging bag, high-performance technology, applied in the field of coatings, can solve the problems of limited development, incomplete holographic effect, low production efficiency, etc., and achieve the effect of good adhesion fastness and outstanding laser effect.

Active Publication Date: 2018-06-19
SHANGHAI WEIKAI CHEM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The existing high-performance coatings used for polypropylene cat food packaging materials are mainly oily two-component coatings. After coating by the coating machine, the coating film must be baked for a long time in the drying tunnel before the two components can fully react. Drying and curing lead to low overall production efficiency; at the same time, there are also major defects in the subsequent molding process, and it is very easy for the paint layer to adhere to the nickel plate, thereby blocking the grating and causing incomplete holographic effects and other problems. Therefore, Seriously restricting its development in the field of polypropylene cat food packaging materials

Method used

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  • High-performance paint for polypropylene cat food packaging bag
  • High-performance paint for polypropylene cat food packaging bag
  • High-performance paint for polypropylene cat food packaging bag

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The high-performance coating composition that is used for polypropylene cat food packaging bag of the present embodiment adopts the raw material of component and content shown in Table 1 to prepare; Concrete preparation comprises following process steps:

[0032] (1) 40 kilograms of ethyl acetate and 20 kilograms of n-butyl acetate are dropped into the reactor, and the temperature is raised to 55° C.;

[0033] (2) 30 kilograms of high-viscosity polyvinyl acetate resin, 2.5 kilograms of gum rosin resin, 2.5 kilograms of wood rosin resin, and 4.9 kilograms of polyvinyl alcohol modified urea-formaldehyde resin are put into the reaction kettle, stirred at high speed for 4.0 hours, until fully dissolved;

[0034] (3) Add 0.1 kg of curing agent into the reaction kettle and stir until it is evenly dispersed.

[0035] Apply the coating directly to the coating machine, the leveling is average, the coating surface flatness is average, the molding temperature is 80-90°C, the moldi...

Embodiment 2

[0037] The high-performance coating composition that is used for polypropylene cat food packaging bag of the present embodiment adopts the raw material of component and content shown in Table 1 to prepare; Concrete preparation comprises following process steps:

[0038] (1) 20 kilograms of methyl isobutyl ketone, 40 kilograms of ethylene glycol monobutyl ether, and 10 kilograms of n-butanol are put into the reactor, and the temperature is raised to 55° C.;

[0039] (2) 6.0 kilograms of high-viscosity polyvinyl acetate resin, 4.0 kilograms of low-viscosity polyvinyl acetate resin, 2.0 kilograms of gum rosin resin, 4.0 kilograms of wood rosin resin, 2.0 kilograms of tall oil rosin resin, 9.0 kilograms of phenol modified urea-formaldehyde resin 1. Put 2.5 kg of polyvinyl alcohol modified urea-formaldehyde resin into the reactor, and stir at high speed for 2.5 hours until fully dissolved;

[0040] (3) Add 0.2 kg of dispersant and 0.3 kg of curing agent into the reaction kettle in ...

Embodiment 3

[0043] The high-performance coating composition that is used for polypropylene cat food packaging bag of the present embodiment adopts the raw material of component and content shown in Table 1 to prepare; Concrete preparation comprises following process steps:

[0044] (1) 10 kilograms of methyl isobutyl ketone, 20 kilograms of ethyl acetate, 25 kilograms of ethylene glycol monobutyl ether, and 10 kilograms of n-butyl acetate are dropped into the reactor, and the temperature is raised to 60° C.;

[0045] (2) 8.2 kilograms of high-viscosity polyvinyl acetate resins, 8.2 kilograms of low-viscosity polyvinyl acetate resins, 3.2 kilograms of gum rosin resins, 1.6 kilograms of wood rosin resins, 1.6 kilograms of tall oil rosin resins, and 8.0 kilograms of phenol-modified urea-formaldehyde resins 1. Put 4.0 kg of polyvinyl alcohol modified urea-formaldehyde resin into the reactor, and stir at high speed for 3.0 hours until fully dissolved;

[0046] (3) Add 0.1 kg of wetting agent a...

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Abstract

The invention provides a high-performance paint for a polypropylene cat food packaging bag. The high-performance paint comprises, by weight, 10 to 30% of polyvinyl acetate resin, 5 to 8% of rosin resin, 4 to 12% of urea-formaldehyde resin, 0.1 to 0.5% of an additive and 60 to 70% of a solvent. The high-performance paint has the following beneficial effects: (1) good leveling performance during coating; (2) good adhesion of a coating; and (3) outstanding laser effect and no problems like filling-in.

Description

technical field [0001] The invention belongs to the technical field of coatings, in particular to a high-performance coating used for polypropylene cat food packaging bags. Background technique [0002] With the continuous progress of society, packaging has developed from its birth to today. As a part of the commodity itself, its importance is obvious. First of all, the barrier property of packaging can prevent the erosion of sunlight and air moisture, prevent cat food from deliquescence and oxidation, and at the same time maintain the proper luster, flavor, shape, etc. of cat food; It plays a very important role in the process. The novel and unique packaging can attract the attention of consumers and stimulate the purchase desire of the target consumer group; moreover, the packaging ensures the completeness of cat food from production, transportation, shelves to final consumers. Hygienic safety, preventing microbial and dust pollution, plays the role of cat food food safet...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D131/04C09D161/32C09D193/04
CPCC08L2205/025C08L2205/035C09D131/04C09D161/32C08L93/04C08L61/32C08L31/04
Inventor 虞明东韩莲蒋天龙
Owner SHANGHAI WEIKAI CHEM
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