Dunlop versus Talalay
WHAT IS THE DIFFERENCE?
There are two methods used to manufacture latex, the Dunlop process and the Talalay process. The Dunlop process has been in use for over 90 years, the Talalay process is a much newer process introduced within the last few years. The Dunlop latex process is normally used to manufacture 100% pure and natural latex from the sap of the rubber tree. The Talalay latex process is more often used to combine natural and synthetic latexes, usually with 70% natural latex and 30% synthetic rubber, or to combine natural latex with fillers made from inert raw materials to bulk out the latex foam. It’s a whole lot cheaper to make latex padded out with fillers, and a whole lot more profitable for the manufacturer who makes it. Our 100% pure and natural latex products do not use synthetic fillers.
WHY CHOOSE THE DUNLOP METHOD?
Pure Dunlop latex is generally denser, heavier, and more durable and resilient than Talalay latex. This is especially beneficial if mattresses are going to be subjected to high levels of activity. Talalay latex is softer, therefore you tend to sink more in the Talalay material. The Dunlop Natural material keeps you suspended if you will, on top of the mattress. Side sleepers especially seem to respond better to the Dunlop method, the pressure point reduction and weight distributing qualities of the latex being clearly superior. You don’t bottom out on it, and you can easily turn from side to side effortlessly. This is important when you consider that a common complaint of memory foam users and Talalay process mattress owners, is that the sinking effects of these materials can cause you to feel like you’re stuck in a rut.
THE ‘GREEN STRENGTH’
Pure Latex made using the Dunlop process retains the intrinsic green strength of natural latex. It possesses excellent dynamic properties such as resilience and high elasticity, excellent tensile properties and has the highest recovery to original shape from deformation. There is no man-made substance which can imitate such properties, and provide support without losing sleeping comfort.
AVOID FILLERS AND PROTECT THE ENVIRONMENT
Natural Latex is biodegradable when it is disposed of to landfill. It is environmentally friendly. Synthetic latex fillers are fine particles of chemically inert materials. They are commonly used to enhance the hardness of latex foam and because they replace some of the natural latex, production costs are lower. The most common fillers are China Clay (Kaolin clay), calcium oxide, or titanium dioxide. The insertion of fillers destroys the antibacterial properties of Natural Latex. Fillers will encourage the growth of fungus and bacteria, which in turn will encourage dust mites. Inorganic fillers reduce the tensile properties of the latex, in particular elongation at break. They suppress resilience, promote high long term compression deformation, and reduce the ability to recover to original shape.
Latex Mattress Australia uses only 100% pure and natural latex sourced from Malaysia and manufactured using the Dunlop process. The latex is independently tested and certified by the Eco Umweltinstitut as pure and natural. This German based institute is a world-renowned authority on environmental and health related toxicity issues.