ASTM D7050-04(2019) PDF

Scope: 1.1 This practice covers the sorting of natural rubber bales of TSR10 or TSR20 in the factory according to their predicted processing performance based on differences in viscoelastic properties. 1.2 This practice determines which bales should be used in factory compounds which benefit from using “soft” natural rubber versus which work better with “hard” natural rubber. 1.3 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

ASTM D7050-04(2019) Referenced Document

ASTM D1485 Standard Test Methods for Rubber from Natural Sources-Sampling and Sample Preparation
ASTM D2227 Standard Specification for Natural Rubber (NR) Technical Grades*， 2024-04-22 Update
ASTM D3194 Standard Test Method for Rubber From Natural Sources-Plasticity Retention Index (PRI)
ASTM D6204 Standard Test Method for Rubber8212;Measurement of Unvulcanized Rheological Properties Using Rotorless Shear Rheometers

2019 ASTM D7050-04(2019) Standard Practice for Rubber from Natural Sources—Sampling and Sorting Bales Based on Predicted Processing Properties
2004 ASTM D7050-04(2014) Standard Practice for Rubber from Natural Sourcesmdash;Sampling and Sorting Bales Based on Predicted Processing Properties
2004 ASTM D7050-04(2009) Standard Practice for Rubber from Natural Sources-Sampling and Sorting Bales Based on Predicted Processing Properties
2004 ASTM D7050-04 Standard Practice for Rubber from Natural Sources-Sampling and Sorting Bales Based on Predicted Processing Properties