Paper: A Natural Story

January 09, 2012 16:19

Ranpak has built our entire company on the back of ingenuity, hard work, good people and paper.

We’ve always been proud of our commitment to the simplicity, efficiency and environmentally responsible qualities of paper as a void-fill, cushioning or wrapping medium.  Our full line of products is designed to meet your needs and the needs of your clients.

But how is paper made?  Where does Ranpak’s paper come from?


Ranpak’s void fill, cushioning and wrapping systems utilize
kraft paper, which is produced from pulp created by the kraft process.

Pioneered by Car F. Dahl in 1879, the kraft process derives its name from the German word for strong.  Kraft paper is machine- made paper that is created from wood pulp consisting almost entirely of pure cellulose fibers.

The kraft process dictates that wood chips are heated with water, steam and a strong alkaline liquid known as “white liquor”. 

After this initial treatment, the wood chips are heated in pressurized vessels called digesters.  After several hours at high temperatures, the natural components of the wood begin to break down, causing the wood chips to form an initial pulp.  After evaporating off some of the residual liquid, the pulp is finally screened and washed.

The kraft process includes the use of sulfate in the conditioning of the wood pulp.  This helps to add to the overall strength of the finished paper.

After the wood pulp is made, it is pulverized and fed into a machine, where it is formed into a paper web, with all water removed through pressing and drying.

It all sounds pretty technical, so what does it really mean? Well, to make it simple, the kraft process makes a pulp that is stronger than the pulp made by other processes. 


Translation: Ranpak’s paper is stronger, better and more durable.


Ranpak’s kraft paper is naturally tan in color, strong and has a high tensile strength – meaning it will hold up to the demands of packaging and shipping.

Ranpak only works with Sustainable Forest Initiative (SFI) or Forest Stewardship Council (FSC) certified mills to ensure our paper comes from a responsible source that follows sustainable forestry practices.  For more information about Ranpak's sustainability practices, visit our Go Green page.