Rubber Smoked Sheets (400121)
Ribbed Smoked Sheets (RSS) are coagulated rubber sheets processed from fresh field latex sourced from well managed rubber plantations adopting modern processing methods. The grades available are shown in the table. The higher grades RSS 1x to RSS 3 are mainly used for manufacture of products for medical, pharmaceutical and engineering. The lower grades of RSS 4 and 5 are generally used for the manufacture of automobile tyres, re-treading materials and all other general products. RSS 3 and RSS 4 are the preferred raw material for radial tyres. Quality of Ribbed Smoked Sheets is ascertained as laid down in Green Book Standards.
RSS 1X Golden
Oxidized spots or streaks, weak, heated, under cured, over-smoked, opaque and burnt sheets are not permissible in this grade. The rubber must be dry, clean, strong, sound and evenly smoked, and free from blemishes, specks, resinous matter (rust), blisters, sand, dirty packing and any other foreign matter. Small pinhead bubbles, if scattered, will not be objected to.
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Area of Consumption: Aero Tyres, Surgical Gloves
Initial Plasticity, Po: 57 || Plastic Retention Index (PRI): 61
Mooney Viscosity: 90
RSS 1 Honey
Oxidized spots or streaks, weak, heated, under cured, over-smoked, opaque and burnt sheets are not permissible in this grade. The rubber must be dry, clean, strong, sound and evenly smoked, and free from blemishes, specks, resinous matter (rust), blisters, sand, dirty packing and any other foreign matter, except slight specks. Small pinhead bubbles, if scattered, will not be objected to.
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Area of Consumption: Tyre Tubes
Initial Plasticity, Po: 55 || Plastic Retention Index (PRI): 65
Mooney Viscosity: 88
RSS 2
Oxidized spots or streaks, weak, heated, undercured, over-smoked, opaque and burnt sheets are not permissible in this grade. The rubber must be dry, clean, strong, sound and free from blemishes, blisters, sand, dirty packing and all other foreign matter other than specified above as permissible.
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Area of Consumption: Extruded Hoses, Quality footwear, Tyres, Tubes, Tread Carcasses
Initial Plasticity, Po: 52 || Plastic Retention Index (PRI): 72
Mooney Viscosity: 85
RSS 3
Slight blemishes in color, small bubbles and small specks of bark permissible in this grade. Oxidized spots or streaks, weak, heated, under-cured, over-smoked, opaque and burnt sheets are not permissible in this grade. The rubber must be dry, clean, strong, sound and free from blemishes, blisters, sand, dirty packing and all other foreign matte r other than specified above as permissible.
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Area of Consumption: Tyres & ADV Tyres, Extruded Hoses, Footwear
Initial Plasticity, Po: 48 || Plastic Retention Index (PRI): 77
Mooney Viscosity: 81
RSS 4
Medium size bark particles, bubbles, translucent stains, slightly sticky and slightly over smoked rubber are permissible. Oxidized spots or streaks, weak, heated, under-cured, over-smoked, and burnt sheets are not permissible. The rubber must be dry, clean, strong, sound and free from blemishes, blisters, sand, dirty packing and all other foreign matter other than specified above as permissible.
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Area of Consumption: Tyres & ADV Tyres, Extruded Hoses, Footwear
Initial Plasticity, Po: 45 || Plastic Retention Index (PRI): 82
Mooney Viscosity: 76
RSS 5
Large bark particles, bubbles and small blisters, stains, over-smoked, slightly sticky rubber and blemishes are permissible. Slightly under-cured rubber is permissible. Weak, heated, burnt, oxidized spots or streaks are not permissible. The rubber must be dry, firm and free of blisters. Dirty packing, sand and all other foreign matter other than specified above is not permissible.
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Area of Consumption: Hand Made Hoses, Retreading Materials
Initial Plasticity, Po: 44 || Plastic Retention Index (PRI): 84
Mooney Viscosity: 75
