Kraft tape is an eco-friendly, water-activated tape that affixes itself neatly to packaging and contains fiberglass threads that offer another layer of security and high tensile strength. Once you seal a box or package with paper tape, it makes a permanent bond, similar to an envelope. You’ll need to rip it to open it, as opposed to plastic tape, which can be peeled open. This makes paper tape an ideal way to deter pilfering or tampering. It’s impossible for someone to open the box without ripping the tape.