This standard applies to fresh curds of natural rubber latex, films with a creped surface obtained by carefully and consistently controlling the entire production process. The crepe must be approximately the same thickness as the sample. This standard does not apply to films made entirely or partially from latex.
GB 8090-1987 history
2007GB/T 8089-2007 Raw natursl rubber.Smoked sheets,white crepes and pale crepes
1987GB 8090-1987 Natural raw rubber white crepe film and light crepe film
GB 8090-1987 Natural raw rubber white crepe film and light crepe film was changed to GB/T 8089-2007 Raw natursl rubber.Smoked sheets,white crepes and pale crepes.