Preparation and Formulation of Transparent Coating for Protection and Durability of Packaging Printing in Metal Cans

Document Type : Original Article

Authors

1 Department of Applied Chemistry, Karaj Branch, Islamic Azad University, Karaj, Iran, MS Student in Applied chemistry

2 Department of Applied Chemistry, Karaj Branch, Islamic Azad University, Karaj, Iran, Associate professor

Abstract

With the advent and development of a variety of products with metal containers (such as wax, spray, paint and tea cans, etc.), it is necessary for consumer information to be inserted and printed on the body of these metal cans. To protect, polish and beauty and also to avoid getting lost the printing of packaging on the body of metal cans, the transparent and colorless coating on the metal cans printing, including highlights in the packaging of these metal containers. Synthetic resins are transparent coating that are used as connectors for color constituents and printing on a variety of metal packaging.In this study, three types of transparent coatings have been formulated, including short oil alkyd resin (containing a mixture of soybean oil and coconut oil with two types of hardeners (amine hardeners: melamine formaldehyde resins and urea formaldehyde).Type I transparent coating: short oil alkyd resin with melamine formaldehyde resin (as hardener);Type II transparent coating: short oil alkyd resin with urea formaldehyde resin (as hardener);Type III transparent coating: short oil alkyd resin with one-to-one mixture of melamine formaldehyde + urea formaldehyde resin. It indicates that the curing (baking) reaction of each of these transparent coatings was completed at 175 °C (with a convection oven equipped with a complete air convection flow) in 20 minutes. Mechanical tests (hardness, impact and cupping test), quantitative test (solid percentage) and viscosity test were performed for all three types of transparent coatings to introduce the best formulas for transparent coatings. Experimental results showed that in the resin / hardener weight ratio, 75% by weight of short alkyd oil and 25% by weight of hardeners provide access to the best transparent coating. For all three types of transparent coatings with the best quality, in this study infrared spectroscopy (FTIR) and scanning electron microscopy (SEM) analysis were performed.

Keywords

References

1. Ataei SH., Nouri S., Esmaeely R., (2019). “Biofriendiy vegetable oil healing agents used for developing self- healing coatings”: Areview, Prog. Org.Coat., 77-95
2. Jana T., Sankar Maiti P., Kumar Dhar T., (2019). “Development of a novel bio-based hybrid resin system for hygienic coating”, Prog. Org.Coat., 105311, DOI:10.1016/j.porgcoat.2019.105311.
3.Wutticharoenwong K., Dziczkowski J., Soucek M.D., (2012). “Tung based reactive diluents for alkyd systems: Film properties”, Prog. Org. Coat., 73, 283-290.
4. Thanamongkollit N., Miller K.R., Soucek M.D., (2012). “Synthesis of UV-curable tung oil and UV-curable tung oil based alkyd”, Prog. Org. Coat., 73, 425-434.
5. Hofland A.D., (2012). “Alkyd resins: from down and out to alive and kicking”, Prog. Org. Coat., 73, 274-282.
6. ShitalA.,NitinP.,PratyushD., (2018). “Formation of alkoxy groups in the synthesis of butylated urea formaldehyde resins: Reaction mechanism and kinetic model”, Chem. Eng. Res. Des., 135, 1-20.
7. Sauzier G., Pitts K.,(2019). “Forensic Sciences, Paint,Varnish, Lacquers”, Encyclopedia of analytical science (Third Edition), 62-74.
8. Poth U., (2008). “Automotive coatings formulation”, Vincentz Network.
9. Radicevic R. Z., Budinski-Simendic J. K., (2005). “The effect of alkyd/melamine resin ratio and curing temperature on the properties of the coating”. J. Serb. Chem. Soc. 70: 593-599.
10. Cakic S.M.,(2009). “FTIR analysis and the effects of Alkyd/Melamine resin ratio on the properties of the coatings”, Faculty of technology, Bulevar oslobodjenja124,16000 Leskovac, Serbia.
11. Schwartz M.,(2016). “Encyclopedia and handbook of materials, parts, and finishes”, London SW1P 1WG,UK.
12. Egbuna S.O., Aninwede C.S.,(2018). “Comparative analysis of alkyd resins produced from castor and soybean seed oils”, International journal of novel research in engineering and science. 5,1, 24-32.

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History

  • Receive Date: 22 December 2018
  • Revise Date: 20 January 2019
  • Accept Date: 21 April 2019
  • Publish Date: 23 August 2019

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