hongkongfoam

Foam is an object formed by trapping pockets of gas in a liquid or solid.

A bath sponge and the head on a glass of beer are examples of foams. In most foams, the volume of gas is large, with thin films of liquid or solid separating the regions of gas. Soap foams are also known as suds.

Learn more about joyce

Solid foams can be closed-cell or open-cell. In closed-cell foam, the gas forms discrete pockets, each completely surrounded by the solid material. In open-cell foam, gas pockets connect to each other. A bath sponge is an example of an open-cell foam: water easily flows through the entire structure, displacing the air. A camping mat is an example of a closed-cell foam: gas pockets are sealed from each other so the mat cannot soak up water.

Foams are examples of dispersed media. In general, gas is present, so it divides into gas bubbles of different sizes (i.e., the material is polydisperse)—separated by liquid regions that may form films, thinner and thinner when the liquid phase drains out of the system films.

When the principal scale is small, i.e., for a very fine foam, this dispersed medium can be considered a type of colloid.

Foam can also refer to something that is analogous to foam, such as quantum foam, polyurethane foam (foam rubber), XPS foam, polystyrene, phenolic, or many other manufactured foams.

Foam is an amazingly useful and versatile material that forms the basis of countless items that we see and use in everyday life.

Its applications range from tiny and intricate uses such as speaker filter foam, all the way up to large scale upholstery foam; there seems to be never ending variety to the applications and here at ACT Foam, we have a wide ranging stock of many different kinds of foam for sale.

Read on : China foam supplier