Foam Techniques / Meanings To Foam Terminology

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Meanings To Foam Terminology

To help you in your search for the right product we have broken down some of the phrases commonly used to describe foam and other associated flexible materials.

If there is a term that we have not yet added to this growing list, contact our sales team and they will help to identify the product most suitable to your needs.

Our range of flexible solutions is constantly growing as a result of our customers’ needs, call us today to discuss your requirements and gain access to a world of foam at the Home of Foam.

Class O Foam: Foam that meets the requirements of British Standards flammability test method BS476 pts 6&7

Density: Defined as mass divided by its volume and generally expressed as a value in kg/m3 or lbs/ft3. Generally the higher the density the better the quality of the foam and more expensive the foam is.

Tensile Strength: The strength of the material expressed as the greatest longitudinal stress it can bear without tearing apart. Result usually expressed in PSI, kg/cm2, kpa

Elongation at Break: The amount of stretch before the point of break. Result expressed as a %

Tensometer: A device to evaluate Young's modulus (How much it stretches under strain) of a material and other tensile properties such tear strength, tensile strength elongation at break etc

Egg box, Egg crate or Profiled Foam: Foam that has been cut 3 dimensionally using a profiler machine. Various profiles are available with different base and rises (Peaks and troughs)

Densified Foam: Normal foam when under compression and heat has the density increased by various multiples of its original density and input thickness.

Felted Foam: Another term for densified foam

Pyrosorb: Impregnated fire retardant foam such as our FT-70/0 that is Class O & Class 1 rated when tested to BS476 pts 6&7 Building Regulation Standards

Fireseal: Impregnated fire retardant foam such as our FT-70/0 that is Class O & Class 1 rated when tested to BS476 pts 6&7 Building Regulation Standards

Firex: Impregnated fire retardant foam such as our FT-70/0 THAT is Class O & Class 1 rated when tested to BS476 pts6&7 Building Regulation Standards

Firend: Impregnated fire retardant foam such as our FT-70/0 that is Class O & Class 1 rated when tested to BS476 pts 6&7 Building Regulations Standards

Fireflex: Polyurethane foam , open cell and interconnecting with excellent sound absorbing properties and has flammability resistance to UL 94-HF1, such as our FT-30FRS,

HLB Foam: High load bearing foam

Flame Retardant Foam: Foam containing additives to slow the burn rate of the foam down or to completely self-extinguish the foam when exposed to an ignition source. Necessary for foam to comply with international Flammability standards.

Flammability Specifications;

F.M.V.S.S.302 : Federal Motor Vehicle Safety Standard Test Method number 302 ( Automotive Industry Standard)

UL94 HF1 : American Under Writers Laboratory Test Method No. 94- Rating HF1 against the horizontal flammability test method (Electronics Industry Standard)

Kiss Cutting: Die cutting process that produces cut parts on a roll that are easy to dispense.

Die cutting: The production process of producing individual cut parts to shape using tooling to make the shape

Lamination: The method for applying various substrates to foam usually by adhesive to make a laminate (2 or more materials combined together)

Flame Lamination: Method of combining materials/films/foils to foam using a flame laminator machine/process

Test Methods:

ASTM: American Society Of Testing Methods

Din: Deutsches Instit Fur Normung or German Institute For Standardisation

ISO: International Organisation of Standardisation

Polyurethane Foam/ Urethane Foam: Generic term for description of plastic foam produced by foaming with either a polyester or polyether polyol resin, in conjunction with water and Toluene di Isocyanate, along with various catalysts and blowing agents and colouring pigments.

Polymer: A naturally occurring or synthetic compound, consisting of large molecules made up of a linked series of simple repeated monomers.

Cross Linked: Cross links are bonds that link one polymer chain to another

Open Cell Foam: Refers to the structure of the foam as being homogenous open and interconnecting.

Closed Cell Foam: Refers to the structure of the foam cellular network being completely tight and closed, allowing the foam to be used effectively as a seal with water absorption usually less than 0.5%.

Homogenous: Foam that has a uniform and evenly distributed cell structure that is similar or identical

Reticulated Foam: Polyurethane Foam that has undergone a secondary post treatment after foaming. In the process called Reticulation, the plastic cell windows within the foam cell are completely removed to render the cell structure completely open. The new homogenous and open cell structure makes the foam effective as a filter used in gas and fluid separation and purification. Various methods of Reticulation are available including chemical/quenched and gas methods

Sealing Foam: Foam with a tight and closed cell structure, used as a gasket and when under compression forms an effective water/air tight seal.

SAB: Self Adhesive Backed

Thermal Insulation: Foam that has a closed cell structure with excellent thermal conductivity values that provide optimum thermal insulation properties.

Impregnated or Treated Foam: A secondary chemical process and method for improving the performance of the foam. Various formulations and dipping techniques will offer benefits of:

  1. Improved fire resistance
  2. Improved filtration characteristics
  3. Improved sealing properties

Chip Foam/ Reconstituted Foam: A by-product of foam conversion, virgin polyurethane foam is granulated and mixed with Toluene di Isocyanate and steam and then pressurised to form individual blocks of chip foam or reconstituted foam.

Various densities of product can be made and typical applications are carpet underlay, packaging and acoustic insulation.

Polyolefin Foam: Generic name for polyethylene foam that can be produced cross linked or non-cross linked. The cross linked expanded polyethylene foam is completely closed cell and of smooth even structure with water absorption being less than 0.5%. The non-cross linked variety has a coarser structure, more suited for non-technical applications such as general packaging. The cross linked variety is a technical foam and is suitable for a tranche of applications covering thermal insulation, gaskets/seals and performance protective packaging and case inserts plus much more.

Acoustic Foam: All foams have sound absorption properties, some better than others. Optimum sound absorption is achieved with technical foams that have a uniform, open and controlled cell structure.

XPE: Expanded Polyethylene Foam

Plastazote: Closed cell expanded polyethylene foam such as our FT-18P, FT-24P, FT-33P, FT-45P, FT-33HDP

Alveolit: Closed cell expanded polyethylene foam such as our FT-26P,FT-30P

Basotect: Melamine foam such as our FT-11M open cell foam

Armafoam Sound: High density, high performance acoustic, EPDM foam with controlled and open cell structure such as our FT-80 AB

PUF: Polyurethane film or Polyurethane Foam

Irradiated Foam: A process by which the foam has been exposed to radiation

HME Foam: Heat moisture exchange, helps to collect and hold some of the heat and moisture from a patient’s exhaled breath and to return them to the inspired gas mixture during inspiration

Memory Foam: Visco elastic foam, closed cell, that eliminates pressure points

CMHR Foam: Combustion modified high resilient foam

Hydrophilic Foam: Foam with a controlled cell structure that offers a good capillary response to fluids

Hydrophobic Foam: Water/oil repellent treated foam

Virgin Foam: Foam produced straight from the foam plant and without post treatment

Anti-static Foam: Specially treated foam that is resistant to the effects of static electricity

Conductive foam: Static dissipative

EPDM Sponge Rubber: Ethylene propylene diene monomer sponge rubber foam

Polychloroprene Sponge Rubber: Neoprene sponge rubber foam

Foam Converter: Company such as Foam Techniques Ltd that can convert foam, rubber and allied products into cut parts and finished products to customers' designs, drawings and specifications

Foam Fabricator: Company such as Foam Techniques Ltd that can convert foam, rubber and allied products into cut parts and finished products to customers' designs, drawings and specifications

Foam Manufacturer: Company such as Foam Techniques Ltd that can produce and convert foam, rubber and allied materials and finished products to customers' designs, drawings and specifications

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