กระดาษและผลิตภัณฑ์กระดาษ
เอกสารมาตรฐาน
สหรัฐอเมริกา
TAPPI
T 231 cm-22
Zero-span breaking strength of pulp (dry zero-span tensile)
2022
14
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This method provides a quick, reliable means to measure the zero-span tensile strength of a randomly
oriented specimen of fibers when dry. Similar procedures for determining the zero-span tensile strength of a randomly oriented specimen of
fibers when wet are found in TAPPI T 273 “Wet Zero-Span Tensile Strength of Pulp” (currently withdrawn). In this test method, the fibers are tested as a handsheet produced using a standardized procedure such
as TAPPI T 205 “Forming Handsheets for Physical Tests of Pulp.” While testing is possible on finished paper materials, information on fiber quality from intermediate
steps in the pulping or papermaking process, or both, is frequently more useful for improving finished paper quality
or improving fiber utilization of, for example, recycled fibers, or fibers subjected to new pulping, bleaching, or
finishing processes. ....