Velcro IP Holdings LLC

Paul M Siemiesz

Andrew Collins

Scott A Billings

Gregory K Kopanski

Rigid foam-core construction underlayment is formed to have one broad side covered by a flexible substrate that carries a series of spaced-apart, discrete regions (such as islands or spaced lanes) of resin, each resin region carrying a respective field of male touch fastener elements extending away from the substrate and exposed for engagement, such as by fibers on an inner surface of exterior construction material, such as a roofing membrane.

Construction underlayment

A method of molding resin on a flexible substrate includes forming discrete regions of resin and forcing resin of at least some of the regions into molding cavities to form a respective array of resin projections extending from a resin base of the regions. Forming the discrete regions of resin includes depositing molten resin directly onto either the substrate or a surface in which the cavities are defined. The resin is deposited as the substrate moves in a processing direction, and the resin is deposited by resin sources spaced from each other along the processing direction.

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New Boston, NH, United States of America

Paul M Siemiesz