HOT MELT SEALING COMPOSITION

PROBLEM TO BE SOLVED: To provide a hot melt sealing composition which seals end parts of the solar battery module with the end parts of the front sheet composed of a surface-untreated PET film, while retaining sufficient adhesiveness, in a flexible solar battery module, shows appropriate flowing pro...

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Bibliographic Details
Main Authors SHIMA NAOTO, SUDO MASATO
Format Patent
LanguageEnglish
Published 29.09.2014
Subjects
ADHESIVES
BASIC ELECTRIC ELEMENTS
CHEMISTRY
DYES
ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE
METALLURGY
MISCELLANEOUS APPLICATIONS OF MATERIALS
MISCELLANEOUS COMPOSITIONS
NATURAL RESINS
PAINTS
POLISHES
SEMICONDUCTOR DEVICES
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Summary:PROBLEM TO BE SOLVED: To provide a hot melt sealing composition which seals end parts of the solar battery module with the end parts of the front sheet composed of a surface-untreated PET film, while retaining sufficient adhesiveness, in a flexible solar battery module, shows appropriate flowing properties at the melting temperature of a sealing material and is excellent in insulation, waterproofness, water vapor barrier properties and durability.SOLUTION: A hot melt sealing composition comprises a polyisobutylene of a weight average molecular weight of 150,000-250,000, a polyisobutylene of a weight average molecular weight of 300,000-400,000, a polyisobutylene of a weight average molecular weight of 60,000-90,000, an adhesiveness imparting agent consisting of at least a terpene phenol resin or an alicyclic saturated hydrocarbon resin, a moisture absorbent consisting of at least calcium oxide or zeolite, a silane-modified amorphous polyolefin and a filler. The number average molecular weight determined from weight average molecular weights of individual polyisobutylenes is 120,000-300,000.
Bibliography:Application Number: JP20130054822