668, Thermo-Bond Film, 3M, adhesive tape datasheet

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3M 668
Thermo-Bond Film

General Information

A 4.0 mil flexible, light colored, thermoplastic adhesive bonding film that exhibits good adhesion to a variety of substrates. The bonding film is removable from the release coated paper carrier. The type of application equipment used to bond 3M™ thermo-bond film will depend on the application involved and on the type of equipment available to the user. Thin films and flexible substrates can be bonded using a heated roll laminator where heat and pressure can be varied to suit the application. Larger, thicker substrates can be bonded using a heated static press or, in some cases, an autoclave. For applications where a shaped adhesive is to be transferred to a flat or three-dimensional part, a hot shoe or thermode method may be appropriate. See 3M data sheet for Directions for Use and Typical Methods for Bonding 3M™ Thermo-Bond Film Adhesives charts.

Backing	Adhesive (unwind)	Thickness (total)	Liner Type (outer)
PET - Polyester	Acrylic	4.00 mil

Adhesion to Steel 180° Peel	adhesion to steel 180° peel - liner side	Tensile Strength	Elongation Percent
		2400.00 lbs/in	1000.00%

Min Application Temp	Min Service Temp	Max Short-Term Temp	Max Long-Term Temp
50 °F	0 °F	260 °F

Adhesive Tape Features

Thermoplastic polyester (non-curing) backing
Slight surface tack for temporary holding
Suitable for kiss or through die cutting
Specific gravity: 1.00
Solids: 100%
Ball and ring softening range: 300°F to 320°F
90° peel adhesion to cold rolled steel: 324 oz./in.
90° peel adhesion to aluminum: 168 oz./in.
90° peel adhesion to polycarbonate: 216 oz./in.
90° peel adhesion to acrylic: 288 oz./in.
Dielectric constant: 3.3 at 1 kilohertz
Dissipation factor: 0.035 at 10 kilohertz; 0.030 at 500 kilohertz; 0.030 at 1000 kilohertz
Volume resistivity: 1.4 x 10 to the 14th power ohm-cm
Excellent heat resistance
Quick fixturing/ holding strength
Excellent adhesion to many substrates
Solvent-free
Good adheison

Adhesive Tape Applications

Bonds films and flexible substrates with a heated roll laminator
Bonds thicker substrates with heated static press
Transfers shaped adhesives

Adhesive Tape Markets Served

Adhesive Tape Colors

Clear
Tan

Comparable products

3M 668

Thermo-Bond Film

Backing	Adhesive	Thickness	Adhesion
PET - Polyester	Acrylic	4.00mil	oz/in

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Converting Options

Converting Services

Budnick Converting offers a number of services to take the product you need and make it perfect for your application. With converting methods ranging from precision slitting or die-cutting to printing and coating, Budnick has the capabilities to create anything you can dream up.

Services

Precision Cutting

Die-Cutting

Slitting

Printing

Adhesive Coating

Finishing and Spooling

Next Steps

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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.