K40.250 - Korel® Polyurethane Foam

Saint-Gobain

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ADHESIVE TAPE FEATURES

Excellent compression set-resistance@73°F=<2%
Compression set-resistance@158°F=<7%
Hardness (shore 0)=53
Tear strength= 26pli
Available cast on to polyester film for stability and low deformation
Modulus=85psi
Thermal conductvity=0.6BTU-in/hr-sq ft°F
Fogging=pass
Outgassing TML=1.18%
Outgassing CVCM=0.25%
Density=20 #/ft cubed

ADHESIVE TAPE ADVANTAGES

Resistant to moisture and most chemicals
Conformable and flexible even in extreme environmental conditions
Easy to achieve intricate die-cut parts
Aggressive acrylic adhesive facilitates assembly
Highly resilient (will not collapse)

ADHESIVE TAPE APPLICATIONS

Dissipates stresses
Cellular telephones
Electrical enclosures
Electronic Gasketing
Vibration damping
Cushioning
Acoustical control
Bumpers
Instrument panels
Spacers

ADHESIVE TAPE MARKETS SERVED

Electronic

ADHESIVE TAPE COLORS

Black

GENERAL INFORMATION

K40.250 is a 250 mil, polyurethane foam use in cellular phones and electrical enclosures. The Korel K40 series is a medium deflection urethane foam with minimal compression set. The series also offers low out gassing and exceeds fogging requirements.

PRODUCT CONSTRUCTION

	Type	Mil Thickness

Backing	PU - Polyurethane	250.00
Adhesive (unwind)	Acrylic
Thickness (total)		250.00

PRIMARY PHYSICAL PROPERTIES

	Unwind Side	Liner Side

Adhesive Activation	Pressure
Tensile Strength	198.00 lbs/in
Elongation Percent	380.00%

SECONDARY PHYSICAL PROPERTIES

Water Absorption Percent	10%
Density	Medium
Force-To-Compress	18.00
Compression Deflection %	10%

THERMAL / ELECTRICAL PROPERTIES

Minimum Application Temperature	40°F
Minimum Service Temperature	0°F
Maximum Long-Term Temperature	158°F
Maximum Short-Term Temperature	250°F
Dielectric Strength	47.00 volts
Volume Resistivity	3.2 ohms/cm

Adhesive Tape and Foam Converting Services

The physical properties listed are typical values and are not to be considered as specifications. Our suggestions for use are based on tests we believe to be reliable. However, the purchaser must carry out their own tests to determine the suitability of the product for their internal use. Information is given in good faith, but without warranty.
It is essential, as with all pressure-sensitive tapes, that the surface to which the tape is applied be clean, dry and free of grease and oil.
Shelf life from date of manufacture is based on the product being stored at 70°F(21°C) / 50% relative humidity out of direct sunlight.
Specification compliance is dynamic and should only be used as a general guide. Always confirm that the tape you are interested in currently complies with all specification requirements. Please verify that the product number that you select is available in the proper size and color to meet your specification.