3m Innovative Properties Company

Christian E Claus

Jan D Forster

Steffen Traser

Bernd Kuehneweg

Adrian T Jung

Daniel W Wuerch

Santhosh K Chandrabalan

Joanna K Wegrzynska

A multilayer protective tape for rotor blades of wind energy turbines is provided herein. The protective tape comprising a protective top layer comprising a polymer film, and an adhesive bottom layer. The top layer having a continuous surface (S) that is outwardly curved or outwardly trapezoidal such that the tape has a cross-sectional profile having an inner section between first and second edge lateral sections. The inner section comprises up to 30% of the width of the tape and has a thickness (Ti), while the first and second edge lateral sections have a thickness of T1 and T2, respectively, wherein Ti greater than each of T1 or T2, and the thickness (T1 or T2) of at least one edged lateral section is at most 600 &#x3bc;m and the thickness of the inner section (Ti) is at least 330 &#x3bc;m. Also provided is a method for applying the tape to rotor blades and a rotor blade protected by said protective tape.

Profiled protective tape for rotor blades of wind turbine generators

The present disclosure relates to a color-changing adhesive composition, for example, a color-changing adhesive composition suitable in the preparation of composite materials. The present disclosure also relates to methods of preparing composite materials using color-changing adhesive compositions and to composite-materials comprising such color-changing compositions.

Color-changing adhesive composition

A multilayer protective tape for rotor blades of wind energy turbines said tape having a protective top layer comprising a polymer film and an adhesive bottom layer, wherein the top layer has a continuous surface (S) that is outwardly curved or outwardly trapezoidal surface such that the tape has a cross-sectional profile having an inner section between two lateral sections and wherein the inner section has a thickness (Ti) made up by the thickness of the top layer and adhesive bottom layer that is greater than the thickness of at least one of the lateral sections (T1,T2) made up by the thickness of the top layer and adhesive bottom layer and wherein the thickness (T1 or T2) of at least one lateral section is at most 600 &#x3bc;m and the thickness of the inner section (Ti) is at least 330 &#x3bc;m. Also provided are processes for making profiled tapes and methods for applying the tapes to rotor blades and blades containing protective tapes.

Growing community of inventors

Düsseldorf, Germany

Christian E Claus