Question

Which of the following methods is mostly used for making glassine?

(a) Soda process

(b) Kraft process

(c) Semichemical process

(d) Sulphite process

The question was asked during an interview.

The above asked question is from Chemical Pulping & Semichemical Pulp topic in section Paper and Paper Based Packaging Materials of Food Packaging Technology

Answer 1

Right option is (d) Sulphite process

The explanation: Sulphite process is mostly used for making glassine. It is also used as a source of cellulose for non-paper applications. It is because sulfite pulps have higher brightness, higher yields at a given kappa, lower odor and lower investment costs as compared to kraft pulps.