The Papermaking Industry: Mechanical Pulping
Mechanical pulping methods avoid many of the environmental impacts created by the Kraft pulping process. Several different mechanical pulping methods are commonly used today, but they all rely primarily on energy rather than chemicals to convert wo...
Subject: lignin
Transcript: ... Which is the thermo mechanical pulping process. So we leave the lignin in the pulp... And we, uh, try to make it pulp by mechanical grinding. You take two
The Papermaking Industry: Kraft Pulping
In the Kraft process, making pulp begins by conveying wood chips of uniform size into a vessel called a digester. Once the pulp-making process is complete, the pulp is transformed into paper. However, not all mills make both pulp and paper at one ...
Subject: lignin
Transcript: 's just a fancy word for a pressure cooker system... Where the whole idea is we want to remove the wood fiber... From the lignin or glue that holds that