GAS PERMEABLE FILM AND PACKAGING MATERIAL

PROBLEM TO BE SOLVED: To provide a gas permeable film having excellent gas permeability, excellent heat sealability at low temperature, and excellent transparency.SOLUTION: A gas permeable film has a multilayered structure of two or more layers. In the gas permeable film, a moisture permeability (in...

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Bibliographische Detailangaben
Hauptverfasser:	MATAYOSHI TOMOYA, IWATA MASATAKA, YAGI RYUZO
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR CHEMICAL RIPENING OF FRUIT OR VEGETABLES 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 FOODS OR FOODSTUFFS HANDLING THIN OR FILAMENTARY MATERIAL HUMAN NECESSITIES 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 PRESERVING, e.g. BY CANNING, MEAT, FISH, EGGS, FRUIT,VEGETABLES, EDIBLE SEEDS STORING THE PRESERVED, RIPENED, OR CANNED PRODUCTS THEIR TREATMENT, NOT COVERED BY OTHER CLASSES TRANSPORTING
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a gas permeable film having excellent gas permeability, excellent heat sealability at low temperature, and excellent transparency.SOLUTION: A gas permeable film has a multilayered structure of two or more layers. In the gas permeable film, a moisture permeability (in accordance with JIS Z0208, at test temperature 40°C and test humidity 90%) is 10 g/m24h-80 g/m24 h, a heat seal strength at heat seal temperature 140°C is 6 N/15 mm-50 N/15 mm, a total haze is 0.1%-10.0%, the number of holes with a maximum diameter of 50 μm or more is 1 or less per 1 m, and at least one layer of the multilayered structure contains a polymer having a constitutional unit derived from 4-methyl-1-pentene.SELECTED DRAWING: None 【課題】ガス透過性、低温でのヒートシール性、及び透明性に優れたガス透過フィルムを提供する。【解決手段】２層以上の多層構造を有するガス透過フィルムであって、透湿度（ＪＩＳＺ０２０８に準拠、試験温度４０℃、試験湿度９０％）が１０ｇ／ｍ２・２４ｈ〜８０ｇ／ｍ２・２４ｈの範囲にあり、ヒートシール温度１４０℃におけるヒートシール強度が６Ｎ／１５ｍｍ〜５０Ｎ／１５ｍｍの範囲にあり、全ヘイズが０．１％〜１０．０％の範囲にあり、最大径５０μｍ以上の孔が１ｍ２あたり１個以下であり、前記多層構造の少なくとも１層が、４−メチル−１−ペンテンから導かれる構成単位を有する重合体を含有する、ガス透過フィルム。【選択図】なし