General Management

How paint is made A Brief History Of Pain And Its Production Process

According to archaeological findings, the Spanish and French people are believed to be the first users of paint. Based on carbon dating, this happened more than 25,000 years ago, and the paint ingredients used included things like charcoal, earth pigments, berry juices, blood, lard, and even milkweed saps. Both the Hebrews and Egyptians used to paint the wood for their ships and boats, which acted as a protective coating.

However, modern paints as we know them were first manufactured in the 1700s by Thomas Child; who built the first American paint mill in Boston Massachusetts. However, the first paint patent was purchased in 1865 by D. P. Flinn, and since 1867 the company began mixing paints for consumers.

Before 1930, grinding stones were used to grind paint pigments. However, due to advancements in technology (industrial revolution), grinding stones were replaced by steel balls. Today, paint pigment grinding is done with sand mills and high-speed dispersion mixers.

What Makes A Paint (What Is It Made Of)?

For a paint to be called a paint as we know it today, it must generally contain four components: –

  1. Paint Pigment – The paint pigment is what is used to give the paint its colour and sheen. These are categorized under two groups; the prime and extender.

• Prime pigments include colours such as green oxide, white, yellow, and red.

• Extender pigments include colours such as talc, calcium carbonate, mica, barytes, and others.

  1. Paint Solvent – The primary function of a solvent is to bind the pigments and resin together. In other words, they act as a carrier. A majority of solvents used are organic, and they may include substances like plain water or mineral turps.
  2. Paint Additives – The primary function of additives is to enhance the paint’s properties. Additives can be used to make paint resistant to scuff and mould. Moreover, it helps improve the drying time and prevent paint sags. Remember, different paint manufacturers will use different combinations of additives. Also, different types of paints come with different additives.
  3. Paint Resin – The primary function of the resin is to bind all paint pigments together. Moreover, it gives the product its adherence property (making it easy to apply to different surfaces). Water-based paints use acrylic emulsion polymers to bind pigments together. It is important to note that acrylic polymers come in various types and different combinations like butyl and methyl methacrylate. Affordable paints use polyvinyl acetate. An ‘air operated diaphragm pump‘ may be used in creating paint.

Paint Manufacturing Process

We all have used paint in one way or another. However, we have never given the paint manufacturing process or industry much thought. we do not see anything beyond the variety of colourful products we can use to decorate our assets. Nevertheless, everything we see from base paint, primer, or liquid varnish go through a complex chemical process that turns ordinary ingredients into a complex solid or liquid paint.

Remember, paint must meet the standards of the market. As such, they are used for beautification, sanitization, protection, and even identification. For paint to meet these standards, it must undergo five important parts of the manufacturing process: –

  1. Identification and measuring of ingredients – Because paint is produced in large lots, a manufacturer mas us calibrated vats to weigh and measure the ingredients.
  2. Preparation and pigment dispersion – At this stage, pigment is added to the production. Pigments are powdery substances that are small and stick together like clumps. Pigments are broken down by resin and addictives to prevent them from sticking together. This process is known as pigment dispersion. This is done in an industrial paint mixer machine.
  3. Let-down – At this stage, additives, solvent, and resin are combined in a large vat, where everything is mixed together using industrial stringing mechanisms. Any final addition must be done at this stage. From here the paint goes to the testing phase.
  4. Laboratory testing – This is a stage where the paint is tested before approval. The manufacturers will test to see if the paint has been mixed correctly, if it meets their standards, and if it is ready for the market. They will test for colour, tint strength, viscosity, dry time, gloss, and general appearance.
  5. Canning – The final stage is canning making it ready for the market.