OFTERING, Austria—The TOP 5000 P mixing and dosing equipment introduced by Oftering-based Elmet Elastomere Produktions- und Dienstleistungs GmbH at the Fakuma fair featured a new touch control panel and a system of labeling each of the two LSR component drums with letters A and B, to help prevent production disruption due to incorrect drum connection.
But the system offers more, as it can handle a large range in amounts of colors and additives with high precision, as LSR World recently learned. It talks of typically 10 percent addition, with 20 percent sometimes used, while customers are known who apply as little as 0.02 percent additive to LSR.
Dosing precision is ensured with externally produced volume meters exactly determining the amount of LSR base material, LSR flow being recorded with 64,000 increments per liter. This is also the rate for recording low amounts of additive flow at fine resolution—just several grams shot weight is typically required for 2 percent color content. Most additives known by Elmet to be applied with its equipment are for coloring, but oils, medicinal agents, or conductive additives are sometimes also involved.
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LSR World is a quarterly magazine written and produced primarily by the editorial staffs of Crain's Rubber & Plastics News and Plastics News. The publication is delivered to select readers of RPN and PN, and is available through an online subscription basis as a digital edition. To learn more, visit lsr-world.com.