Context: There are two major mechanical pulps, the thermomechanical one (TMP) and groundwood pulp (GW). In the TMP process, wood is chipped and then fed into large steam heated refiners, where the chips are squeezed and converted to fibres between two steel discs. In the groundwood process, debarked logs are fed into grinders where they are pressed against rotating stones to be made into fibres. Mechanical pulping does not remove the lignin, so the yield is very high, >95%, however it causes the paper thus produced to turn yellow and become brittle over time. Mechanical pulps have rather short fibres, thus producing weak paper. Although large amounts of electrical energy are required to produce mechanical pulp, it costs less than the chemical kind.

Question: Besides the thermomechanical process, what is a process used in pulping?
Answer: groundwood pulp

Question: What is the main ingredient in the groundwood process?
Answer: debarked logs

Question: What strength of paper is produced by mechanical pulps?
Answer: weak

Question: In which process is wood chipped and fed into small steam heated refiners?
Answer: Unanswerable

Question: In which process are the chips converted to fibers between three steel discs?
Answer: Unanswerable

Question: What is fed into mechanical pulps during the groundwood process?
Answer: Unanswerable

Question: Where are debarked logs fed into during the TMP process?
Answer: Unanswerable

Question: What are debarked logs pressed against to make pulp?
Answer: Unanswerable

Question: Besides the thermomechanical process, what is a process not used in pulping?
Answer: Unanswerable

Question:  What is not the main ingredient in the groundwood process?
Answer: Unanswerable

Question:  What strength of wood is produced by mechanical pulps?
Answer: Unanswerable