U121-2.5 - Unsupported Adhesive Transfer

Scapa Tapes North America

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FEATURES

Excellent adhesion to low surface energy plastics
Very high tack and peel
High adhesive mass aids in bonding to rough, irregular surface
Excellent cold flow
Excellent environmental resistance when not exposed to UV light
Peel adhesion (PSTC 1 Mod./180°) from stainless steel 1 min. @ RT = 90 oz/in
Holding power (PSTC 7 Mod./178°) (load) 2.2 psi (1"x1"x1000g) @ RT = 95 hours
Heat resistance (PSTC 7 Mod./178°) (load) 1.1 psi (1"x1"x500g) @ 158°F (70°C) = 5 hours

ADVANTAGES

APPLICATIONS

Bond road tile markers to asphalt
Difficult bonding applications
Bonding to rough surfaces

MARKETS SERVED

Construction
Industrial

COLORS

White

GENERAL INFORMATION

Unifilm® U121-2.5 is a 11.0 mil, unsupported adhesive transfer. It is primarily used for bond road tile markers to asphalt, bonding to difficult applications and rough surfaces.

PRODUCT CONSTRUCTION

	Type	Mil Thickness

Backing	None
Adhesive (unwind)	Rubber	11.00
Liner Type (outer)	Paper (60# kraft, 3.5 mil)
Liner Type (inner)	Polyethylene ( 2.5 mil)
Thickness (total)		11.00

PRIMARY PHYSICAL PROPERTIES

	Unwind Side	Liner Side

Adhesion-to-Steel - 180° Peel	100.00 oz/in	100.00 oz/in
Adhesive Activation	Pressure
Testing Info: Initial peel adhesion to stainless steel panels (PSTC 1 Mod./180°) 1 wk. @ RT and 1 wk @ RT; Holding power (PSTC 7 Mod./178°) (load) 2.2 psi (1"x1"x1000g) @ RT; Heat resistance (PSTC 7 Mod./178°) (Load) 1.1 psi (1"x1"x500g) @ 158°F (70°C)

SECONDARY PHYSICAL PROPERTIES

THERMAL / ELECTRICAL PROPERTIES

Minimum Application Temperature	65°F
Minimum Service Temperature	40°F
Maximum Short-Term Temperature	110°F

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.