Pack slip can cause subsequent edge damage when the tape is played, as it will unwind unevenly and may make contact with the tape reel flange. Abbreviation for polyethylene terephthalate. The polymeric substrate material used for most magnetic tapes. Analogous to a freight train, where each individual unit is represented by a freight car. At very high magnification, a chunk of polymer would resemble a bowl of cooked spaghetti.
Plastic materials are polymers.
The strength and toughness of plastics is due, in part, to the length of its polymer molecules. If enough polymer chains are broken, the plastic will become weak, powdery, or gooey. A strand of tape protruding from the edge of a wound tape pack. The condition where low frequency signals on one tape winding imprint themselves on the immediately adjacent tape windings. It is most noticeable on audio tapes where a ghost of the recording can be heard slightly before the playback of the actual recording.