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TOP 5100 precision dosing system for liquid silicone rubber (LSR) injection molding is a second-generation all rounder, offering advanced features for producing high-quality silicone parts with the most economic use of material, space, working time and energy. It comes with a range of available options and solid conveying technology to offer maximum process stability and mixing accuracy, making it suitable for standard applications as well as customer-specific requirements. The system is suitable for 20- and 200-liter drums.

The dosing system features a more compact design compared to its predecessor, the TOP 5000, so it requires less floor space. It also offers optimized pump technology in terms of sealing technology for an even longer service life, higher resolution of the volume counters for greater precision in production and revised, efficiency-enhancing software.

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The system offers compliance with stringent safety standards (EN ISO 13849-1) to ensure maximum protection for operators. As an option, the CE- and UL-certified TOP 5100 can also be delivered FDA-compliant. Elmet’s standard phthalate-free design of the dosing systems and their exposed components is a prerequisite for their use in the food, health care and related industries. For users of both the TOP 5100 and TOP 7000, the conceptual relationship between the two systems enables users to reduce spare parts inventory.

The TOP 5100 is equipped with the M pump unit, enabling an increased delivery pressure of 230 bar (3,300 psi), so that all commercially available LSR materials can be processed in an extended viscosity range from 0.001 Pas to 3000 Pas. This includes carbon black or mineral-filled and self-adhesive materials, which tend to increase in viscosity, as well as abrasive materials, such as thermally conductive materials for the e-mobility sector.

The TOP 5100 comes with the same flow-optimized processing unit and additive system that characterizes Elmet’s other LSR dosing systems. Flow rates in excess of five liters per minute enable short cycle times when filling large molded parts or high numbers of cavities.

The processing unit’s modular design with integrated cooling and user-friendly clamp connection of the elements facilitate easy cleaning and maintenance. The volume counters with its high resolution of 3.9 μl per impulse provide additional stabilization of the process when mixing components A and B. 

The TOP 5100 is equipped as standard with the option of connecting a single controlled additive line, with the possibility of adding up to five more. The supply can be made from 1-, 4- or 20-L additive tanks. The high resolution of the additive volume counters of less than 0.1 μl/lmp offers maximum accuracy in adding additives, which is important for very small parts.

Offering up to 99.6 % material utilization per drum, the high feed rate and the low maintenance costs enable economic efficiency over the system’s entire service life. The TOP 5100 joins the company’s line of other dosing systems which start with the 20-liter TOP 700 system and extends to the fully equipped TOP 7000 flagship for 20- and 200-liter drums, which is closely related to the TOP 5100 in terms of its concept.