|This article needs additional citations for verification. (November 2013)|
A foam pump, or squeeze foamer and dispensing device is a non-aerosol way of dispensing liquid materials. The foam pump outputs the liquid in the form of foam and it is operated by squeezing. The parts of the foam pump are similar to those of the other pump devices. Many times the foaming pump comes with a protective cap. Most of the components are made from polypropylene (PP).
About foamer pumps
A foam pump emits doses of the liquid contained in the bottle in the form of foam. Foam is created in the foamer chamber. The liquid constituents are mixed in the foaming chamber and this is discharged through a nylon mesh.
The neck finish size of a foam pump is bigger than the neck finish size of other types of pumps. The reason for this is that in the bottle (neck) there is a foamer chamber. The usual neck size of a foam pump is 40 or 43mm.
"Tilt! Do not shake, Squeeze-Do not Pump, and Keep bottle upright" are instructions provided to consumers with a product using the air foamer, such as hair-coloring, (where hair-coloring products previously contained instructions to vigorously shake the product, squeeze the bottle, and turn upside-down to disperse the product). Some foaming dispensers include suction on the bottom to allow the container to remain upright.
Foamers can be purchased alone, or filled with a liquid product like soap. When the liquid is mixed with air, the liquid product can be dispersed through the pump-top as a foam. Foamers can also be re-used with different liquid products to extend the mass of the liquid by creating a foam-version.
The fields of application
The foam pump is widely used in case of cosmetic products and household chemicals, such as mousse foam cleansing, hand washing liquid, hand sanitizer, facial cleanser, shaving cream, hair conditioning mousse, sun protection foam, spot removers and baby products etc. In the field of food & beverages, molecular gastronomy style foam is usually created using various techniques and stabilizers such as lecithin but there is at least one ready to use liqueur that has been developed with the foaming apparatus top which produces an alcoholic foam topping for drinks.