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HYMANTOPBON with everybody understand the straws in black masterbatch material standards.

Straw is mainly used for the use of liquid milk, beverages, drinking coffee, black masterbatch should comply with the food grade, products standards for GB9688 a 88 "food packing polypropylene molding product health standard", the standard analysis with a 2003 GB/T5009.60 "food packaging polyethylene, polypropylene and polystyrene molding product health standard analysis method".

In the design of plastic straw black masterbatch formula, first of all, the raw materials, carbon black, additives are accord with the requirement of detection indicators of GB9688 a 88.

Because of the special pipe production technology fast linear velocity, products belong to the thin products, compatibility of black masterbatch dispersion, high requirements. Usually a straw with polypropylene raw material to produce, the choice of the carrier for PP. The cut surface of the suction side with Angle, hardness and toughness are required to achieve an equilibrium value.

So the carbon black content in black masterbatch is the key, should also consider the choice of carrier resin. The reason is PP crystallinity is higher.