| 20110311797 | TPO ROOFING MEMBRANE WITH ADHESIVE READY BOTTOM LAYER - A method for producing a TPO membrane includes providing on at least a base or lower surface of the TPO membrane a primer or tie layer having a polar component or element and which allows the TPO membrane to adhere to a substrate using a water based or a low or no VOC containing adhesive. In one embodiment, the tie layer is added to an existing TPO membrane while in another embodiment, the tie layer is co-extruded with the TPO at the time the TPO membrane is manufactured. In the preferred embodiment, the tie layer is an E-VA-MAH based layer. | 12-22-2011 |
