Damped laminates with improved fastener force retention, a...

B - Operations – Transporting – 32 – B

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B32B 3/06 (2006.01) B32B 3/30 (2006.01) F16F 7/08 (2006.01) F16F 7/108 (2006.01) F16F 9/30 (2006.01)

Patent

CA 2206301

The present invention relates to a vibration damped laminate article having improved force (torque and/or pressure and/or stress) retention, a method of making one article type and novel tools used to make the one article type. The first laminate comprises at least one layer of damping material (88) between at least two substrate layers (86, 90). At least one deformation area (84) is present in the laminate wherein the substrate(s) are plastically deformed such that they are closer than non-deformed areas of the substrate and wherein the damping material has less mass than in a non-deformed area of the article; the deformation areas providing the areas of good force retention, for an attachment device (82) attached thereto. The second laminate, which is not deformed, contains an additive of sufficient modulus, diameter and loading, in a vibration damping layer to provide improved force retention.

La présente invention concerne un article en couches aux vibrations amorties présentant une conservation des forces (force de torsion et/ou pression et/ou contrainte) améliorée, un procédé pour fabriquer un type d'articles et des outils d'un type nouveau servant à fabriquer ce type d'articles. Le premier article en couches comprend au moins une couche de matériau amortissant (88) placé entre au moins deux couches de support (86, 90). Ledit article comporte au moins une zone de déformation (84), où le ou les support(s) ont subi une déformation permanente, de sorte qu'ils sont plus près l'un de l'autre que dans des zones non déformées du support, et où le matériau amortissant a une masse moindre que dans une zone non déformée de l'article; les zones de déformation constituent les zones de bonne conservation des forces pour un dispositif de fixation (82) qui y est fixé. Le second article en couches, qui n'est pas déformé, contient un additif de module, de diamètre et de charge suffisants, dans une couche d'amortissement des vibrations, pour assurer une conservation des forces améliorée.

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