Soap Noodles are produced by saponifying vegetable oils, such as
palm oil, coconut oil or olive oil, and/or animal fats (tallow) using sodium
hydroxide. Soap Noodles is considered to be the basic precursor of soap.
Soap noodles are used by both soap manufacturers and hobbyist
alike because it can easily be customized with pigments, fragrances and other
additives to produce soap. This soap can be further customized by moulding,
pressing, and stamping to give the final product.
Different specifications of soap noodles are available for the
various types of soap to be manufactured e.g. toilet soap, laundry soap,
translucent soaps, high-lather, medicated, etc. The largest sources of soap
noodles are Malaysia and Indonesia (mainly from palm oil). Other countries of
origin include India, Brazil, Southern Europe, China and the Middle East. Trade
Asia sources globally for soap noodles to provide the best products with the
best price for your industrial needs.
Saponification of Oil/Fat
Direct saponification is the most common process used to make
soap, in which a triglyceride molecule is reacted with sodium hydroxide via the
Neutralization of Fatty Acids
Oil/fat is hydrolyzed to its constituent fatty acid and glycerol. The fatty
acids are then neutralized with sodium hydroxide.
Saponification of Fatty Methyl Esters
Oil/fat is trans-esterified with methanol to produce methyl
esters. The methyl esters are then saponified with sodium hydroxide to produce
soap with methanol as a by-product.
The mixture is homogenized by passing through a series of
rollers to produce a thin sheet of soap, or by passing the mixture into a large
worm screw. Under high pressure, the mixture is churned along the length of the
screw and extruded through a perforated end plate to produce several layers of
soap. The homogenized soap is compressed by a large worm screw extruder
(plodder) to produce a single large continuous bar of soap.
Beside, soap noodle is also used in the production of shaving
cream because lauric acid gives quicker and more persistent lather.