• PT Youtube
  • PT Facebook
  • PT Linkedin
  • PT Twitter
3/27/2018

Two-Color LSR Molding Fine-Tuned with Flow Simulation

Facebook Share Icon LinkedIn Share Icon Twitter Share Icon Share by EMail icon Print Icon

“Virtual Molding” simulation can model all aspects of LSR molding, even with two colors.

CAE simulation software provider Sigma Plastic Services is demonstrating an unusual two-color LSR molding application. Egg cups of white and yellow LSR are run in a 4 + 4 cavity Elmet mold using that company’s new TOP5000 dosing system. Its closed-loop controls document the real amount of colorant used, which is particularly relevant to the healthcare industry. Especially remarkable is the special hardware system that allows two-component molding on a standard one-component Arburg injection press with only one LSR dosing system.

In this project, Sigma used its Sigmasoft Virtual Molding software to determine the filling time, injection pressure needed, and selection of the optimal LSR material grades from Momentive. Sigma’s highly developed LSR simulation can show such details as air temperature at the vents, formation of flow lines during fill, and percent cure to indicate when parts can be ejected.

RELATED CONTENT

  • NPE: New Machines Exhibit Sophisticated Molding Demos

    More speed, more power, more precision, and more automated functions accomplished in and out of the mold. That’s exactly what injection machinery suppliers were offering at NPE2012.

  • K 2013 Preview: Injection Molding

    Next month’s mammoth triennial plastics show in Düsseldorf, Germany, challenges injection molding machine builders to demonstrate technological leadership in addressing the needs of the marketplace.

  • Injection Molding LSR: Three 'M's of Innovation: Mega, Micro, and Multi

    Liquid silicone rubber is breaking out of its niche into a broader array of applications, helped by new developments in materials, machinery, and processing. Larger parts, micro-parts, foams, and multi-color or multi-material combinations are key areas of innovation.

NPE2018 Exhibitor

SIGMASOFT Virtual Molding

Booth: S30023

View Showroom

Resources