Raman spectra of host olivine (a), (K,Na)2Ca(CO3)2 carbonate (b), K2Ca(CO3)2 bütschliite (c), NaHCO3 nahcolite (d), (Na2,K2,Ca)CO3/Na2CO3 gregoryite/natrite (e), MgCO3 magnesite (f), BaMg(CO3)2 norsethite (g), BaCa(CO3)2 alstonite (h) and unidentified phase/...
the rolls may be heated so as to simultaneously set the stretched configuration. Heat from the rolls may also soften the web material (e.g., the thermoplastic material in the web coform) and thus enhance the stretching process. Alternatively, the web may be subjected to a steam bath, or ...