MULTILAYER LAMINATED STRUCTURE MATERIAL

PURPOSE:To detect the presence of the defect of an adhesive material layer under a nondenstructive state while obtaining high barrier properties by laminating a chief material layer mainly comprising a polyethylene resin and the saponified substance of an ethylene-vinyl acetate copolymer through a s...

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Bibliographische Detailangaben
Hauptverfasser:	AOYANAGI TERU, MATSUOKA MASAMI
Format:	Patent
Sprache:	eng
Schlagworte:	LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM MEASURING MEASURING ANGLES MEASURING AREAS MEASURING IRREGULARITIES OF SURFACES OR CONTOURS MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS PERFORMING OPERATIONS PHYSICS TESTING TRANSPORTING
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Beschreibung
Zusammenfassung:	PURPOSE:To detect the presence of the defect of an adhesive material layer under a nondenstructive state while obtaining high barrier properties by laminating a chief material layer mainly comprising a polyethylene resin and the saponified substance of an ethylene-vinyl acetate copolymer through a specific adhesive material layer. CONSTITUTION:A resin composition containing (A) a 60-95wt.% polyethylene resin comprising a not less than 0.1wt.% modified polyethylene resin grafted by at least an unsaturated carboxylic acid and/or a derivative thereof and (B) a 40-50wt.% unmodified linear ultra-low density polyethylene resin is used as an adhesive material layer employed for a multilayer laminated structure material. The resin composition is prepared so that density reached 0.925g/cm or more and the total content of grafted monomers reaches 0.001-5.0wt.%. The difference of the acoustic impedance of a chief material layer and the adhesive material, etc., measured by using ultrasonic waves of 20-25MHz is set so as to reach 8.5X10g/cm .mum se or more.