He ʻano ʻano mea ʻai meaʻai rotary intermittent, hoʻohana ʻia i ka ʻenehana pulping alkali a i ʻole sulphate pulping, e kuke ai i nā ʻāpana lāʻau, nā ʻōpala ʻohe, ka mauʻu, ka ʻohe, ka linter linter, ka ʻōpala pulu, ka bagasse. Hiki ke hoʻohui maikaʻi ʻia ka mea kemika a me ka maka i loko o ka digester spherical, ʻoi aku ka maikaʻi o ka pulupulu puka, ka liʻiliʻi o ka hoʻohana ʻana i ka wai, ke kiʻekiʻe o nā mea hana kemika, hoʻopōkole i ka manawa kuke, nā mea maʻalahi, haʻahaʻa haʻahaʻa, mālama maʻalahi a mālama.