FOAMED SHEET

A foamed sheet according to the present invention has a thickness of 30 to 500 µm and includes a foam. The foam has a density of 0.2 to 0.7 g/cm 3 , an average cell diameter of 10 to 150 µm, and a peak top of loss tangent (tan ´) occurring in a temperature range of from -30°C to 30°C, where the loss...

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Bibliographische Detailangaben
Hauptverfasser:	OTSUKA, Tetsuya, TOKUYAMA, Hideyuki, MATSUSHITA, Kiichiro, DOI, Kohei, KATO, Kazumichi, NAGASAKI, Kunio, KITAHARA, Tsunaki, TAKAHASHI, Tadao, OKADA, Mika
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE ADHESIVES AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G CHEMISTRY COMPOSITIONS BASED THEREON DYES ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY GENERAL PROCESSES OF COMPOUNDING METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL ORGANIC MACROMOLECULAR COMPOUNDS PAINTS POLISHES TELEPHONIC COMMUNICATION THEIR PREPARATION OR CHEMICAL WORKING-UP USE OF MATERIALS AS ADHESIVES WORKING-UP
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Beschreibung
Zusammenfassung:	A foamed sheet according to the present invention has a thickness of 30 to 500 µm and includes a foam. The foam has a density of 0.2 to 0.7 g/cm 3 , an average cell diameter of 10 to 150 µm, and a peak top of loss tangent (tan ´) occurring in a temperature range of from -30°C to 30°C, where the loss tangent is defined as the ratio of a loss modulus to a storage modulus determined at an angular frequency of 1 rad/s in dynamic viscoelastic measurement of the foam. The foam preferably has a maximum of the loss tangent (tan ´) in the temperature range of from -30°C to 30°C of 0.2 or more.