Mold Hotrunner Solutions Inc.

Double Production with Internal Valve Gating

Rheo-Pro® iVG Internal Valve Gate 'Short Stack' Hot Runner S
Mold Hotrunner Solutions® introduces Rheo-Pro® iVG™, the world's most compact back-to-back valve gate hot runner system. The new iVG™ is the first and only internal valve gate on the market. It is also the only valve gate hot runner that operates entirely without seals. Its patented design completely rewrites the rules of valve gating technology and opens up endless new possibilities for high cavity stack molds, swivel molds, and multi-material injection.

The compact design of Rheo-Pro® iVG™ nozzles makes it possible to build 'short stacks' or stack molds with a tip-to-tip length of only 285 mm and a pitch or gate-to-gate distance of 63.5 mm. The extremely space efficient iVG offers exciting new options for tool makers and OEMs seeking the most competitive injection molding solutions. For molders, the ability to produce more plastic parts in smaller machines with less clamp tonnage means better operating costs, significantly higher production outputs and most importantly, more profitability.

For example, at 3.0 seconds cycle time, a 64+64 stack mold for 26 mm light weight bottle caps can produce 3.5 million caps per day in a 790 x 630 mm stack mold. The melt channels are reduced in size, length and volume to enhance color change and pressure drop for higher viscosity materials. The new iVG™ back-to-back valve gate nozzle increases mold uptime and improves conventional manifold systems. The valve-to-valve melt transfer through the mold parting surface eliminates the traditional sprue bar.

The Rheo-Pro® iVG™ is completely front-serviceable from the mold parting line. Every component, including nozzles, valve actuators and valve pins, can be accessed quickly by simply stripping the cavity plate onto the core side while the entire mold remains inside the machine. Preventative maintenance is effectively reduced to minutes.

The iVG™ performs well under the most demanding processing conditions, unlike electric valve gates and conventional pneumatic cylinders, that can fail in extremely hot operating environments. The iVG™ does not require any seals, hoses, tubes, belts or motors, making it the most durable and maintenance friendly valve gate system ever built.

Visit Mold Hotrunner Solutions® at K 2010 in Düsseldorf from October 27 to November 01, 2010 or contact the company today for more information.