Foam latex
Encyclopedia
Foam latex is a lightweight, soft form of latex
Latex
Latex is the stable dispersion of polymer microparticles in an aqueous medium. Latexes may be natural or synthetic.Latex as found in nature is a milky fluid found in 10% of all flowering plants . It is a complex emulsion consisting of proteins, alkaloids, starches, sugars, oils, tannins, resins,...

 which is used in masks and facial prosthetic
Facial prosthetic
A facial prosthetic or facial prosthesis is an artificial device used to change or adapt the outward appearance of a person's face or head....

s to change a person's outward appearance. The Wizard of Oz
The Wizard of Oz (1939 film)
The Wizard of Oz is a 1939 American musical fantasy film produced by Metro-Goldwyn-Mayer. It was directed primarily by Victor Fleming. Noel Langley, Florence Ryerson and Edgar Allan Woolf received credit for the screenplay, but there were uncredited contributions by others. The lyrics for the songs...

was one of the first films to make extensive use of foam latex prosthetics in the 1930s. Since then it has been a staple of film, television, and stage productions, as well as finding use in a number of other fields.

To create foam latex, a liquid latex base is mixed with various additives and whipped into a foam
Foam
-Definition:A foam is a substance that is formed by trapping gas in a liquid or solid in a divided form, i.e. by forming gas regions inside liquid regions, leading to different kinds of dispersed media...

, then poured or injected into a mold and baked in an oven to cure. The main components of foam latex are the latex base, a foaming agent
Foaming agent
A foaming agent is a surfactant, which when present in small amounts, facilitates the formation of a foam, or enhances its colloidal stability by inhibiting the coalescence of bubbles....

 (to help it whip into a froth), a gelling agent (to convert the liquid foam into a gel), and a curing agent (to turn the gelled foam latex into a solid when baked). A number of additional additives can also be added depending on the required use of the foam.

Foam latex has also seen heavy use in the field of stop motion
Stop motion
Stop motion is an animation technique to make a physically manipulated object appear to move on its own. The object is moved in small increments between individually photographed frames, creating the illusion of movement when the series of frames is played as a continuous sequence...

 animation, being used to form the skin and muscles of many puppets. The characters in The Nightmare Before Christmas
The Nightmare Before Christmas
The Nightmare Before Christmas, often promoted as Tim Burton's The Nightmare Before Christmas, is a 1993 stop motion musical fantasy film directed by Henry Selick and produced/co-written by Tim Burton. It tells the story of Jack Skellington, a being from "Halloween Town" who opens a portal to...

and Coraline
Coraline
Coraline is a horror/fantasy novella by British author Neil Gaiman, published in 2002 by Bloomsbury and Harper Collins. It was awarded the 2003 Hugo Award for Best Novella, the 2003 Nebula Award for Best Novella, and the 2002 Bram Stoker Award for Best Work for Young Readers...

were made partially of foam latex. It is also used in place of clay in productions such as Celebrity Deathmatch
Celebrity Deathmatch
Celebrity Deathmatch is a claymation television show that depicts celebrities against each other in a wrestling ring, almost always ending in the loser's gruesome death. It was known for its excessive amount of blood used in every match and exaggerated physical injuries...

in which the various celebrities who appear to be made of clay are in fact foam latex over wire armature
Armature
Armature may refer to:* Armature , the kinematic chains used in computer animation to simulate the motions of virtual characters...

.

Artists such as Lordi
Lordi
Lordi is a Finnish hard rock/heavy metal band, formed in 1996 by the band's lead singer, songwriter and costume-designer, Mr. Lordi. The band is known for wearing monster masks and using pyrotechnics during concerts...

 and GWAR
GWAR
Gwar is a satirical heavy metal band formed in Richmond, Virginia, United States, in 1984. The band is best known for its elaborate science fiction/horror film inspired costumes, obscene lyrics and graphic stage performances, which feature humorous enactments of politically and morally taboo...

wear costumes that include this material.

Latex foam is also widespread in the manufacture of modern soccer goalkeeper gloves. The material has proven to be the most effective way of allowing players to grip the football in wet and dry playing conditions, as well as providing damping properties which help in catching. A variety of treatments are applied to latex foam to produce different types of foam with varying properties to assist performance. Some, for example, are designed to offer a high level of grip; whereas others are designed to offer maximum durability.
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