What is the difference between packing tape and duct tape?

Packing tape and duct tape are both types of adhesive tapes that are used for different purposes. The main differences between the two are:
Composition: Packing tape is typically made of polypropylene or polyester film, while duct tape is made of cloth or scrim-backed polyethylene. This makes packing tape thinner and more transparent, while duct tape is thicker and more opaque.
Adhesive: Packing tape uses a pressure-sensitive adhesive that is designed to stick to cardboard boxes and other packing materials. Duct tape uses a rubber-based adhesive that is designed to stick to a variety of surfaces, including fabric, metal, and plastic.
Strength: Duct tape is generally stronger than packing tape, due to its thicker backing and stronger adhesive. Duct tape is often used for heavy-duty applications such as sealing ductwork or repairing outdoor equipment. Packing tape is typically used for lighter-duty applications such as sealing boxes for shipping or storage.
Durability: Duct tape is more durable than packing tape, as it is designed to withstand exposure to water, UV light, and temperature extremes. Packing tape is not designed for extended outdoor use or exposure to extreme conditions.
In summary, packing tape is designed for sealing and packaging, while duct tape is designed for repairs and heavy-duty applications. While both tapes have similar adhesive properties, they differ in composition, strength, and durability.
ironpackingstrip.com