PB216b - First Surface Alumized Polyimide Tape with 966 Acrylic Adhesive

Sheldahl’s first surface aluminized polyimide tapes with 966 adhesive are used whenever a low emittance and absorptance surface is needed. The acrylic adhesive provides a strong bond with low outgassing and can be used over a moderate temperature range. These tapes may be bonded to structures to reduce radiative heat transfer. They can also be used on multilayer insulation blankets to close the edges or repair rips in the outer layers.

This product may be ordered with 0.5, 1, or 2 mil thick polyimide that conforms to the requirements of ASTM D5213. The aluminum coating is nominally 1000 Ĺ thick. Although the standard widths for this tape are 1, 2, 3, and 4 in., it may be ordered in any width needed. Each roll is 108 ft. (33 m) long.

PRODUCT CHARACTERISTICS

Parameter (independent of film thickness)	Specified Value
Absorptance (a)	Ł 0.14
Hemispherical emittance (e_H)	Ł 0.05
Normal emittance (e_N)	Ł 0.05
Typical a/e	4.0
Adhesion to stainless steel	ł 20 oz./inch of width
Intermittent temperature range	-185° C to 230° C (-300° F to 450° F)^A
Continuous temperature range	-60° C to 120° C (-75° F to 250° F)^A

A Zero peel strength of acrylic pressure sensitive adhesive is at about –45°C (-50°F).

Standard Item Number	Thickness mil (mm)	Typical Weight (g/m²)	Item Number if Perforated
146390	0.5 (12.5)	81	TBD
146385	1.0 (25)	98	146386
146389	2.0 (51)	133	TBD

POST PROCESSING

This product may be processed after metalizing and combining the adhesive to the film to enhance its functionality. We offer a standard perforation pattern with 0.76 mm (0.03 in.) diameter holes on 6.35mm (0.25 in.) centers. We can also place a coverlay on the tape to protect it from accidental damage during handling and application.

SHELF LIFE

This product shall meet specified values for a minimum of 12 months after the date of shipment provided that the material is stored in its original unopened container at normal interior temperatures (10° C to 27° C / 50° F to 80° F).

OLD PART NUMBERS

Sheldahl’s old designation for this product family was G4010XX. The tables below give a translation between the old and new numbers.

Standard Part Numbers		Thickness	Perforated Part Numbers
Old	New		Old	New
G401000	146385	1.0 mil	G401001	146386
G401020	146389	2.0 mil	G401021	TBD
G401060	146390	0.5 mil	G401061	TBD

Sheldahl manufactures a broad range of vacuum deposited films, laminates and tapes. Ask for additional product bulletins describing other Sheldahl products.

The information on this data sheet is based on the data obtained by our research and is considered accurate. However, no warranty is expressed or implied regarding the accuracy of these data and the results obtained from the use thereof. This information is furnished upon the condition that the recipient shall conduct tests to determine the suitability of the product for his or her particular application.

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