Packaging Reference Library · Technical Reference

Specialty Tapes (Filament, Masking, Duct, Printed)

Filament, masking, duct and printed tapes each solve a specific packaging or shop job. This sheet compares their backings and adhesives, lists the right use for each and points out common mix-ups.

Ref PK-0116ASTM D3330

Draft, open for review. Check every value against the governing standard and the manufacturer’s data before use.

What it is

Filament tape (strapping tape) has glass or polyester strands in a film backing. It is very strong in the length direction and is used to bundle, reinforce heavy boxes and hold parts for shipping. Masking tape has a crepe paper backing and a rubber or acrylic adhesive. General masking tape is for holding, labeling and light masking; painter's tape is a low-tack version that removes cleanly. Duct tape has a cloth scrim between a polyethylene film and a thick rubber adhesive. It is a repair and general-purpose tape, not a duct-sealing tape. Printed tape is carton sealing tape with text or a logo, used for branding, handling notices or tamper evidence. Peel adhesion for many of these tapes is tested with ASTM D3330.

How to identify

Filament tape shows visible strands in the tape. Masking tape is tan, white or colored crepe paper that stretches slightly. Duct tape is silver, black or colored with a cloth weave visible on the edge. Printed tape is a clear or tan film with repeating print.

Tape comparison

Tape	Backing	Adhesive	Best use	Not for
Filament (strapping)	Film with glass or polyester strands	Rubber or hot melt	Bundling, heavy boxes, palletizing small items	Surfaces where residue matters
Masking (general)	Crepe paper	Rubber or acrylic	Holding, labeling, light masking	Long outdoor use
Painter's	Crepe paper	Low-tack acrylic	Clean removal from paint and trim	Box sealing
Duct	Poly film over cloth scrim	Thick rubber	Temporary repair, bundling, marking	Sealing HVAC ducts
Foil (listed duct sealing)	Aluminum foil	Acrylic	Sealing HVAC ducts where listing is required	General packaging
Printed carton	BOPP film with print	Hot melt or acrylic	Branding, warnings, tamper evidence	Heavy bundling

Key points

Duct tape should not be used to seal HVAC ductwork. Codes require tapes listed for duct sealing, such as UL 181 listed foil or mastic tapes.
Filament tape strength depends on strand type and density. Use the maker's tensile data when weight matters.
Masking tape left in sun or heat can bake on and leave residue.
Painter's tapes are rated for how many days they can stay on and remove cleanly. Check the label.
Printed tape still has to be the right adhesive for the box. See carton sealing tape types and the tape selection chart.

Common mistakes

Sealing ductwork with cloth duct tape.
Using masking tape to close shipping boxes.
Leaving filament tape on finished surfaces where it leaves residue.
Ordering printed tape without checking adhesive and core size for existing dispensers.

Governing standards: ASTM D3330 (peel adhesion of pressure-sensitive tape); UL 181A and UL 181B (closure systems for HVAC duct).

Reference only. Verify against the current governing code or standard, the manufacturer's data and the project documents before use. Apps for Distributors disclaims liability arising from reliance on this reference.

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