An elastomeric breathable three-dimensional composite material and the process for producing the same are disclosed. A carrier material is supplied onto a top surface of continuous portions of an elastomeric film to form the composite material. A pressure differential is applied to a bottom...http://www.google.com.hk/patents/US5733628?utm_source=gb-gplus-share專利 US5733628 - Breathable elastic polymeric film laminates
