Foaming Kraft paper has been around for over a century. These types of papers are made by the process of pressing hard (or soft) wax paper into a heated coil to form the paper. This process is called bleaching and when done properly will give you a wonderfully smooth shiny surface.

The main advantage of foaming Kraft paper offers is its incredible softness which makes it very easy to work with and smooth for a variety of products. Foaming Kraft paper offers the highest levels of strength and flexibility available on the market. These types of papers are durable and have high thermal conductivity properties that make it ideal for thermal muntings, shrink wrap, shrink wrapping and packaging. Its open-penetration structure, superior thermal conductivity, increased porosity, low solublization temperature, and open-frame core structure make it ideal for a wide variety of packaging needs.

Foaming Kraft paper offers a variety of benefits that make it so popular in many different industries. Small, flexible and easy to work with these types of papers offer the ability to create many different textures, designs and colors. These papers are often used for thermal muntings in printers, packaging, bag wraps, thermal tape, as well as numerous other applications where durability, functionality and aesthetics matter. Because of its widespread use, this type of paper is often used as an inlay in jewelry, medicine, food packaging and even in clothing. Foaming Kraft papers are often used to line drawers in filing cabinets and can also be used as a base for computer-printed labels and ribbons.
https://www.hmc-yanghua.com/product/release-paper-1/