541-175 FS MEC3 - Quality Foam

1 Cushioning Functions Gasketing SealingCase Liner Packaging Drainable SeatingTECHNICAL PRODUCT FUNCTION SHEETG eneral DescriptionFoamex flexible cellular plastics arehigh technology polyurethane foamsdesigned to perform a variety of specifically engineered cushioning functions when fabricated into parts,as well as other cushioning-related functions including gasketing, sealing,positioning and spacing maximum utility, the manufacturedfoam capabilities can be extended byincreasing density and/or the additionof functional characteristics throughpost-processing, including reticulation,coating, laminating, felting and otherspecial techniques.

2 Applications Include: Comfortcushioning for stereo earphones,speaker surrounds, goggles, orthopedicsoft goods, and cycle seats; automotivegaskets and seals, sealing and interiortrim; carpet anti-skid cushioning andsupermarket meat/produce display foam can also be idealfor low-pressure gasketing and for dust,light, vapor or water seals in appliances,electronic equipment, automobiles,trucks and aircraft. It is also used as spring media for pushbuttons, pressure pads forphotographic film packs, copy machinecomponents and friction rollers.

3 By varying density and/or ILD(indentation load deflection), polyurethane foams can be an effectivepackaging material. High-end outdoor furniture andboating manufacturers have found areticulated, coarse pore polyether foamto offer unsurpassed drainability,durability and comfort in seatingapplications. Benefits Include: A wide range ofcharacteristics to meet special needs( , low permeability for seals, controlled permeability for breathablegaskets); ease of fabrication; lightweight; functional PVC coating fordielectric sealing; excellent shape reten-tion, resistance to wear and abrasionand Mil spec certification.

4 Other foam Functions: Other function sheets for polyurethane foamsare available from Foamex. They are: Filtering Functions Reservoiring & Delivering Safety foam Acoustical FunctionsCushioning & Sealing FoamsSIF FoamSIF is a patented, reticulated flexiblepolyurethane foam , characterized by a three-dimensional skeletal structure of strands which provide a 97percent void space. With controlled pore sizesranging from 3 pores per linear inch(coarse and abrasive) to 110pores perlinear inch (soft and downy), it offersoutstanding uniformity/predictability.

5 Applications: Stereo Earphone Cushions Motorcycle/Ski Goggles Metal Limb Splint Padding Surgical Head Support Breathable Seals EKGPads Prosthesis Padding Custom FoamCustom foam is a non-reticulatedflexible polyester polyurethane foamalso available in 3 to 110pores per lin-ear inch (ppi) textures. It can be shapedand colored to meet a broad range foam has a K factor of (hr) (ft2) ( F/ft), and can be usedwhere thermal insulation must be flexi-ble, resilient and lightweight. Aesthetic foam is a fine pore, hole free polyether polyurethane with an ester-like look and feel.

6 AestheticFoam can be used when the environment demands an ether andappearance is : Case Lining Protective Packaging Low-pressure Light and Dust Seals Weather Stripping Automotive Gaskets Athletic Equipment Padding Electronic Equipment ShockMounts Pushbutton Spring Padding Film Pack Pressure Pads Home Permanent ElasticEnd Wraps Appliance GasketingULRecognized FoamsSeveral grades of UL 94 HF1recog-nized foams are available in either polyester or polyether grades. Polyethersand Low Perm should be selectedwhen a more hydrolytically stableproduct is desired.

7 The advan-tages of polyester foamsinclude stronger physicals and in the case of Pyrell foam , an intumescent system to retardflammability. Samples of Pyrell haveretained their flammability classificationeven after aging under ambient roomconditions for 10years. Applications: Seals Appliance Gaskets Thermal Insulation Protective Packaging Electric Outlet Seals Custom FeltCustom Felt is manufactured bycompressing (felting) 90ppi CustomFoam, under heat and pressure toimpart a permanent compression set. It is easy to work with, and can be easily cut, glued or shaped into unusualor curved configurations, and offers a wide selection of either firm cushion-ing material or low-permeability gasketing product.

8 Ether foams can also be felted and offer the option of con-trolling resilience. Applications: Copy Machine Gaskets Automotive Air/Heater Sockets Sanding Block Cushioning Automobile Armrest Padding Tape Recorder Head Pressure Pads Dust and Light Seals Shoe Insole CushionPVC-Coated SIF PVC-Coated SIF is a reticulatedflexible polyurethane foam coated with polyvinylchloride. The coatinghelps to preserve the open-pore foamstructure without increasing resistanceto airflow. By adding pigments to the vinyl coating, a wide range ofintense color is possible.

9 PVC-CoatedSIF is more resistant to chemicalattack, and has unusually high strengthfor a low-density foam material. Applications: Decorative Packaging Supermarket Packaged Meat and Produce Displays Air FiltersPackaging ApplicationsFoamex offers a range ofpolyurethane foams for both MilP26514 Eand Mil addition, non-Mil spec packaging/cushioning foams are cushioning curves can be provided upon request. Low Permeability FoamLPFoam has a low air and vapor permeability that can be ideal for manyapplications requiring low pressure gasketing and where higher priced mate-rials are over-engineered.

10 Applicationsinclude air duct damper gaskets anddust and vapor seals for appliances anddata processing equipment. Super Seal foam offers both resis-tance to water leakage and an open cell,low compression set Advisory ServiceAs specialists in polyurethane foamtechnology, Foamex Technical ProductsGroup offers the imaginative design engineer a complete functionaladvisory service. We invite you to write or call us at 1-800-767-4997 Typical Physical PropertiesTensileTear50%CompressionDensi tyStrengthUltimate %StrengthCompressionDeflection (psi)(lb/cu ft)(psi)Elongation(lb/in)Set25%65% 4# 6# (20 ppi) (all ester grades) Seal in accordance with ASTM D 3574.