Puddle or starve coated peel-and-stick roofing membranes
AssigneeBuilding Materials Investment Corporation
InventorsAwdhoot Kerkar, Vinay Mehta
Life of this patent
Estimating the term…
Abstract
A method for preparing a roofing membrane, and a membrane, having significantly less adhesive while retaining the same sealing properties. The reduction in the amount of adhesive significantly decreases the cost of raw materials needed for manufacturing the membrane and thus reduces the overall cost of the membrane itself.
Claims20
A method for preparing a partially coated membrane, the method comprising the steps of:
- a. feeding a layer of adhesive on to a membrane;
- and
- b. starving the feeding of the coating on the membrane so as to utilize less coating to provide a partially coated membrane having comparable thickness to a fully coated membrane and which provides water tight sealing of the membrane to a surface.
A starve coated roofing membrane, comprising:
- a. a membrane having an upper surface and a lower surface;
- b. an adhesive composition coated on the lower surface of the membrane;
- wherein 5-80% less adhesive composition is applied upon the lower surface of the membrane while retaining full adhesive and water sealing properties similar to that of a fully coated membrane;
- and
- c. an optional release liner positioned upon the adhesive composition.
A partially coated self-wound membrane comprising a substrate having a starved or pattern coating of adhesive on an upper surface of said substrate.
Dependencies are inferred from the claim text.