Stock material or miscellaneous articles – Structurally defined web or sheet – Weight per unit area specified
Patent
1995-06-07
1997-12-09
Le, H. Thi
Stock material or miscellaneous articles
Structurally defined web or sheet
Weight per unit area specified
428220, 428457, 428465, 428489, 428492, 428543, B32B 1504, B32B 1100
Patent
active
056958676
ABSTRACT:
A reinforcing and vibration-damping material has a laminate body which includes a constraining layer acting to reinforce an adherend to which the material is to be applied, a vibration-damping layer acting to damp vibrations in the adherend and a binder layer interposed between the constraining layer and the vibration-damping layer. Further, a hardenable pressure sensitive adhesive layer is formed on the vibration-damping layer of the laminate body, and a release liner is placed around the hardenable pressure sensitive adhesive layer. The constraining layer exhibits the advantageous effect of reinforcing the adherend, and comprises, for example, a hard material such as a metal. The binder layer comprises a pressure sensitive adhesive, a bonding agent or a hardenable pressure sensitive adhesive. The vibration-reinforcing layer comprises a viscoelastic material containing unvulcanized rubber and a vulcanizing agent for example. The hardenable pressure sensitive adhesive layer comprises a hardenable pressure sensitive adhesive which is tacky in the uncured state but has a strong adhesive force when it is cured by heating, irradiation or being blocked from air. Thus constructed, the reinforcing and vibration-damping material has the advantageous effects of damping vibrations in and reinforcing the adherend.
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Article entitled "Frequency And Loss Factors of Sandwich Beams Under Various Boundary Conditions", D.K. Rao, Journal Mechanical Engineering Science, vol. 20, No. 5, 1978, pp. 271-282.
Kogure Masao
Saitoh Masahiko
Saitoh Takanori
Takano Akihiko
Le H. Thi
Lintec Corporation
Nichols G. Peter
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