Hydroxypropyl Methylcellulose (HPMC) wani muhimmin ƙari ne a cikin manne-manne na tayal, wanda ke tasiri sosai ga aikinsu, musamman dangane da lokacin buɗewa. Lokacin buɗewa yana nufin lokacin da manne na tayal ya kasance mai aiki kuma yana iya haɗa tayal ɗin yadda ya kamata bayan an shafa shi. Tasirin HPMC cellulose ether akan lokacin buɗe manne na tayal yana da mahimmanci don cimma nasarar shigarwar tayal, musamman a cikin yanayi masu ƙalubale.