This kind of EVA bag is a specially designed for rubber additive Carbon Black. With these low melt valve bags, carbon black manufacturers or suppliers can make little uniform packages of 5kg, 10kg, 20kg and 25kg to meet the users demand. Compared to the traditional paper bag, it is easier and cleaner to use for the rubber compounding process.
The valve bags are made from EVA resin (copolymer of ethylene and vinyl acetate) which has particualr low melting point and good compatibility with rubber, so the bags together with the carbon black packed inside can be direct thrown into a banbury mixer during rubber mixing process, and the bags can fully disperse in the compounds as a minor ingredient.
Gusset or block bottom, Internal or external valve, embossing, venting, colour, printing
Melting point available: from 80 to 100 deg. C
Material: virgin EVA
Film thickness: 100-200 micron
Bag size: 5kg, 10kg, 20kg, 25kg