The benefits and risks of pigments in rotational moulding have already been assessed in previous blog posts; Colouring P1 and Colouring P2, and this blog posts will look at how to incorporate it [...]
Pigments may not always be completely suitable for rotational moulding and many factors need to be taken into consideration: the environment, contamination of food and water, shrinkage and [...]
The colouring of poly water tanks also plays a huge role when deciding which grade to buy due to aesthetics and UV radiation as an impact on the polyethylene. Pigments play a major role in many [...]
Antioxidants are necessary to provide protection to polyethylene over a number of stages. The first is during extrusion conducted by the polyethylene manufacturer. The second, for coloured [...]
It is important that polyethylene resin has a broad processing window as it will melt and adhere to the mould easily, and it makes it less prone to oxidation, discolouration and loss of toughness [...]
Weather resistance can greatly affect a poly tank, as they can deteriorate quickly, especially when left outside.When polyethylene is exposed outdoors, the ultra-violet component of the sunlight [...]
Another factor to consider in deciding on a grade for rotational moulding of water tanks is the effect of comoner on crack resistance as the most important function of a polytank is containment! [...]
Choosing the right grade of LLDPEs depends on many factors, one of those being the effects of the melt flow index and density of the product which will be explored in this blog post.
Rotational moulding is a means of producing polyethylene articles of a size and shape that cannot be manufactured economically in any other way, and they are especially useful for poly tanks. [...]