RSS 1 : Grade 1 Ribbed Smoked Sheets RSS 1 refers to Ribbed Smoked Sheets, produced from natural rubber ...    More ...

RSS 1 : Grade 1 Ribbed Smoked Sheets RSS 1 refers to Ribbed Smoked Sheets, produced from natural rubber latex as ribbed sheets, by coagulation with acids and sheeting, properly air dried and smoked, and visually graded. Ribbed smoked sheets (RSS) are graded based on visual assessment of quality. The International Rubber Quality and PackingConference (IRQPC) have specified the grade descriptions, to establish acceptable grades for commercial usage. 

Specification (RSS1)
 
Main Kinds of products: 
- SVR3L, SVR10, SVR20, SVR CV50, SVR CV60 
- RSS1 and RSS3 
- Latex HA60% and LA 
Property
MEAN TEST RESULT
 
 
VIETNAMESE STANDARD
3769 – 2004
 

SVR3L
SVR3L

Dirt(retained on 45ìm aperature), max %wt.
0.017
0.03 max

Ash, max % wt.
0.144
0.50 max

Nitrogen, max %wt.
0.20
0.60 max

Volatile matter, max %wt.
0.38
0.80 max

Initial Wallace plasticity (Po) range.
42
30  min

PRI(P30/Po)*100
87
60  min

Lovibond Color
4 max
6 max

Mooney viscosity ML (1’+4’)100^oC
-
-

 
Standard Vietnamese Rubber 10
_ Dirt %w/t : 0.08 max
_ Ash %w/t : 0.60 max 
_ Volatile matter %w/t: 0.80 max
_ Nitrogen %w/t : 0.60 max
_ Initial Wallace Plasticity range : Range 30 min
_ Palaticity Retention Index (PRI) : 50 min.


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