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A 2-layer roto-moulded water storage tank is made using rotational moulding technology and features two distinct layers. The outer layer is typically black and UV-resistant, which helps to protect the water tank from sunlight, while the inner layer is made from food-grade material to ensure water purity. This design enhances the durability and safety of the plastic water tank and helps maintain the water quality for domestic and industrial use.

The outer layer of water storage tanks is usually black because black surfaces absorb sunlight and prevent it from penetrating the tank. This inhibits the growth of algae and microorganisms inside the tank, while also providing strong UV resistance. The black colour protects the water storage tank material from degradation due to prolonged sunlight exposure, enhancing the tank’s durability.

UV resistance benefits a plastic water tank by preventing the harmful effects of ultraviolet rays. UV-resistant tanks do not become brittle, discoloured or degraded when exposed to sunlight. This helps increase the tank’s lifespan, maintains water quality and ensures that the tank remains durable and reliable, particularly when used for water storage tanks for homes or in outdoor environments.

The white inner layer in a water storage tank is made from food-grade material and serves two main purposes. It ensures the stored water remains safe for consumption and allows for easy inspection of the tank’s interior. The white colour helps spot impurities or contaminants, to ensure better hygiene and maintain high water quality.

Yes, the inner layer of 2-layer roto-moulded water tanks is made from 100% food-grade, virgin plastic material. This ensures that the water stored inside the water storage tank remains safe for drinking and free from harmful chemicals or contaminants that could leach from non-food-grade plastics.

The black outer layer of the plastic water tank absorbs more heat from sunlight, which can increase the temperature of the water inside, especially during hot weather. While the black colour effectively blocks sunlight to prevent algae growth, it may cause the water to become warmer during the summer months.

Yes, regular cleaning of water storage tanks is essential to maintain water quality and prevent the buildup of dirt, debris and harmful microorganisms. Over time, unclean tanks can foster bacteria, viruses and algae, which can pose health risks. Regular cleaning ensures that the water remains safe for drinking and other uses.

Roto moulding or rotational moulding is a manufacturing process in which plastic powder is heated and rotated inside a mould to form a seamless, hollow tank. This method produces strong, durable and rust-resistant water storage tanks with even wall thickness. Roto-moulded plastic water tanks are lightweight, customisable and cost-effective compared to other manufacturing methods, making them ideal for various water tank sizes.