Paint is mostly known for its aesthetic colors, giving a touch of life to a dull surface. But more than the color, paint is something else. It can function as protection, finish, and design. Paint is a viscous liquid that is made up of different chemicals and elements combined together as one substance. Usually, it is applied to exterior walls of residential houses, buildings, and structures – even to their interior walls. Apart from that, paint is also used on furniture and other stuff.
There are different kinds of paint. Each kind is made for specific types of surface. The surface to which paint is applied can be wood, metal, plastic, masonry, etc. While one kind may not work on a surface, another kind is intended for that. So, there’s nothing to worry about! The paint and coating industry has been growing bigger and new products are being launched each year.
What is paint made of?
It’s what we initially see in paint. The color. Pigment provides the assigned hue to this building material. It normally comes in the form of powder. Pigments can be divided into two categories: ‘prime pigments’ and ‘extender pigments.’ Prime includes titanium oxide or white pigment, carbon black or black pigment, metallic salts and chrome green oxide for yellow, red, and orange pigments.
Resin is considered the binder. It has adhesive properties that hold the particles of the pigments together to form a single substance. Acrylic emulsion polymers are binding agents commonly used for waterborne paints like Latex. Also, this ingredient gives the paint the ability to dry after application.
A solvent is where all the elements, including pigments and resins, are dissolved. It can be water or an organic substance such as mineral turps, acting as the liquid phase and carrying the rest of the paint’s constituents.
Additives are an accumulation of other minor ingredients that aims to enhance the paint’s physical properties. These are chiefly responsible for improving the quality of paint, especially after application – in preventing the growth of mold, smoothing out the brush strokes, enabling it to resist sagging, and stimulating quicker drying.
The Manufacturing Process
Here are the steps in making paint:
The proper amount of each ingredient is required to create the right proportion. This depends on the overall target volume of the production. Raw materials – liquid and dry and measured per bulk weight. Graduated measuring containers or floor scales can be used in portioning the elements accurately.
Mill Base Production
The mill base is the combination of the dry ingredients. In this step, dispersion will take place. As mentioned earlier, pigments are powdered substances that are prone to form agglomerates while they stick together. That is why they have to be milled and broken down into much smaller particles. Upon separating from one another, the crushed bits are drenched in resin with additives that will prevent them from clinging to the others again.
High shear mixers from ginhong.com are conducive in getting the desired results. Its powerful method and refined manner in processing the raw materials for paints will give you the high-quality processing you have been wanting to achieve.
The Let-down and Blending
Let-down is the process of combining and homogenizing all the prepared ingredients of paint – resins, solvent, and additives. The mill base gets added to the let-down afterward once it’s completely assembled and merged. If the manufacturer so desires and if the mixture compels, auxiliary ingredients will be appended to the total formulation.
Each step of the way, the quality of the ingredients are being tested to ensure their good state. Product verification laboratory or any equivalent group is tasked to monitor and evaluate the entire manufacturing process of paint. Even before each ingredient is added, it undergoes a specific assessment for the approval of quality. The mill base and let-down, likewise.
After the major steps in preparation of the mill base and let-down, the final batch mix will be thoroughly evaluated as well – this is the quality evaluation. It is a series of tests that will assess its viscosity level, density, degree of dispersion, color, tint strength, dry time, gloss, and even the dry film appearance.
If the final batch passes the quality evaluation, it will be up for canning. This is to double-check the product’s capacity to be deployed to paint suppliers. Actually, the process of evaluation still depends on the standards of the manufacturing company. But for this, two samples are taken. The first will be retained for future use, and the second will go through ultimate testing that will prove if it conforms to the regulation standards set for the industry.
Once everything is done, it will be distributed to warehouses and branches.
Labeling and Palletizing
As it arrives at big storehouses, they will conduct the final mixing for the product. The liquid will be poured into its respective cans with a machine’s assistance. Labels will be put onto them, including brand, ingredients, manufacturer’s name, etc. Then, palletizing – these cans will be securely sealed for shipment.
There you have it, the manufacturing process of paint. Remember the fundamental ingredients used for the operation, and that the importance of using an appropriate machine such as high shear mixers is vital. Lastly, the paints won’t be distributed and shipped if they do not pass the quality evaluation.