Assertion: duct tape's layer | /r/HasProperty | backing
Facets:
Source sentences:
text: Modern PSA tapes typically consist of four thin layers: backing, release coating, primer, and adhesive, says Lyle C. Chacka, an adhesives specialist at 3M. Flexible backing materials are usually about 50–100 µm thick and include paper, polyethylene or polypropylene films, cloth, metal foil, vinyl, or foam.