EASILY UNSEALABLE LID MATERIAL

PROBLEM TO BE SOLVED: To provide a lid material having superior easy unsealability capable of preventing any curl attributable to the heat treatment on a tab portion of the lid from occurring. SOLUTION: In the easily unsealable lid material, a heat seal material layer 6 is formed by joining a co-ext...

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Bibliographische Detailangaben
Hauptverfasser:	KITA SUSUMU, NAGAOKA KOJI
Format:	Patent
Sprache:	eng
Schlagworte:	ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS,e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES,DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS CONVEYING HANDLING THIN OR FILAMENTARY MATERIAL LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM PACKAGES PACKAGING ELEMENTS PACKING PERFORMING OPERATIONS STORING TRANSPORTING
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a lid material having superior easy unsealability capable of preventing any curl attributable to the heat treatment on a tab portion of the lid from occurring. SOLUTION: In the easily unsealable lid material, a heat seal material layer 6 is formed by joining a co-extrusion film of the total thickness of 50 μm consisting of a mixed composition film 4 with a thickness of 10 μm and a polypropylene film 5 with a thickness of 40 μm covered on the upper surface thereof with an adhesive on the undersurface of a base material layer 3 in which a polyamide film 2 with a thickness of 15 μm is joined with a dry laminate adhesive on the undersurface of a polyethylene terephthalate film 1 with a thickness of 12 μm. The mixed composition film 4 is constituted by mixing 90% polypropylene and 10% polyethylene. COPYRIGHT: (C)2007,JPO&INPIT