Patent · US Active

Multi-layer laminate with high internal damping

US9693143B2 · kind B2 · utility

2Cited by

7References

13Claims

0Family size

Assignee

tesa SE · DE

Inventors

Nicolai Böhm · Hamburg, DE
Michael Egger · Hamburg, DE
Mark HÄNLE · Hamburg, DE
Alexander Herrmann · Reutlingen, DE
Bernhard Mussig · Seevetal, DE
Andreas Westphal · Hamburg, DE
Falk Hunger · Neubukow, DE
Gero Maatz · Hersbruck, DE

Key dates

Filing date	Nov 27, 2014
Grant date	Jun 27, 2017
Priority date	—
Expiry date	Nov 27, 2034

Classification

Technology area (CPC H)Electricity
CPC primaryH04R2307/025
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

The invention relates to a multi-layer composite for the production of membranes for electroacoustic transducers, comprising a first and second cover layer, a first and second damping layer and a separating layer, the first and the second damping layer consisting of adhesive compositions the respective glass transition temperatures TG (DSC) of which differ by at least 10 K.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.