Partially hydrolyzed grade PVOH normally has the hydrolysis between 86.0-89.0, the typical grades are POVH05-88, POVH17-88, POVH20-88, POVH24-88,POVH26-88 etc.
Fully hydrolyzed grade PVOH normally has the hydrolysis between 98.0-99.3, the typical grades are POVH05-88, POVH17-99, POVH20-99, POVH24-99,POVH26-99 etc.
Some special grade POVH has the hydrolysis degree between the typical partially hydrolyzed grade and fully hydrolyzed grade, ranging from
90,0-98.0, the typical grades are POVH 1792, POVH2092 etc.
PVA fiber is produced from polyvinyl alcohol as main raw material which is subjected to a process of dissolution, spinning, heat-setting, cutting and baling to form a high-strength, high-modulus fiber.
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