FOAM SHEET

FOAM SHEET

Provided is a foam sheet showing little change in dielectric constant even when exposed under a high-humidity condition. The foam sheet of the present invention includes: a foam layer; and a pressure-sensitive adhesive layer arranged on at least one side of the foam layer, wherein the foam sheet has...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: SAITO, Makoto, TOKUYAMA, Hideyuki
Format: Patent
Sprache:eng
Schlagworte:
ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE
ADHESIVES
CHEMISTRY
DYES
LAYERED PRODUCTS
LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
METALLURGY
MISCELLANEOUS APPLICATIONS OF MATERIALS
MISCELLANEOUS COMPOSITIONS
NATURAL RESINS
NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL
PAINTS
PERFORMING OPERATIONS
POLISHES
TRANSPORTING
USE OF MATERIALS AS ADHESIVES
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Beschreibung
Zusammenfassung:Provided is a foam sheet showing little change in dielectric constant even when exposed under a high-humidity condition. The foam sheet of the present invention includes: a foam layer; and a pressure-sensitive adhesive layer arranged on at least one side of the foam layer, wherein the foam sheet has a dielectric constant change amount [(Y−X)×100]/X of 10(%) or less, where X (F/m) represents a dielectric constant of the foam layer immediately after the foam sheet has been left at rest under conditions of a temperature of 23° C. and a humidity of 50% for 2 hours, and Y (F/m) represents a dielectric constant of the foam layer immediately after the foam sheet has been left at rest under conditions of a temperature of 60° C. and a humidity of 95% for 24 hours.