Chrysler Extends Use of Soy-Based Acoustic Foam

Chrysler Group LLC is expanding its use of a new soy acoustic foam that is easier to use, less dense and more recyclable than petroleum-based materials.

The foam, called Betafoam Renue, is supplied by Dow Automotive Systems. Chrysler says the material is less viscous, which makes it easier to work with, and has a storage shelf life of six months twice that of traditional foams.

The material absorbs sound that would otherwise enter the passenger cabin through the A- and B-pillars and rear wheel wells. Chrysler began using the foam early this year in 2013 model Chrysler 200 and Dodge Avenger sedans produced at its assembly plant in Sterling Heights, Mich.

Now the company is using purpose-built robotic injection equipment at its factory in Toledo, Ohio, to add the foam in 10 structural areas of the all-new 2014 Jeep Cherokee SUV. Chrysler says the material saves about 1.5 lbs per vehicle compared with petroleum-based foam.