Centrifuged Latex (400110)
Field latex is a white or slightly yellowish opaque liquid with a specific gravity, which varies between 0.974 and 0.986. It is a weak lyophilic colloidal system of spherical or pear shaped rubber globules suspended in an acquiesces serum. Field latex is centrifuged to manufacture latex concentrated of 60% rubber content. Centrifuged latex is commercially available in two different varieties, one with high ammonia (above 0.60%) and the other with Low Ammonia (less than 0.30%). It also contains secondary preservatives like TMTD (0.0125%) and zinc oxide (0.0125%). Grading, packing, and making of centrifuged latex are as per specifications prescribed in IS 5430.
Centrifuged Latex of 60% of Dry Rubber Content
Processing of natural rubber latex into high quality latex concentrate of 60% dry rubber content is done through centrifugation. Centrifuging involves the separation of preserved field latex into two fractions, one containing the concentrated latex of more than 60% dry rubber and the other containing 4-6% dry rubber. Centrifuged latex is today available commercially in two different verities with high ammonia (min.0.7% of ammonia) and low ammonia (max. 0.3% of ammonia). The former is preserved solely with ammonia and later contains one or more preservatives besides ammonia. LA latex has several advantages which include better quality, lower cost of production by way of savings in preservatives, acid and low cost of effluent treatment.
Applications
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High Ammonia Grade (HA): Foam products, Dipped Goods, Adhesives, Elastic Thread, House hold Industrial Gloves, Balloons, Rubber Bands and Finger Caps
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Low Ammonia Grade (LATZ): Preferred for All Applications where De-ammoniation is necessary for product manufacturing
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Single & Double Centrifuged Latex: High technology dipped products such as Condom, Examination Gloves, Surgical, Gloves, Catheters, etc.