SEALANT FILM, FILM FOR PACKAGING FILM AND PACKAGE

• Main Author: SAKIYAMA TETSUZO
• Format: Patent
• Language: English; Japanese
• Published: 12.10.2017
• Subjects: 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; MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNERANALOGOUS TO PAPER; MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN AMANNER ANALOGOUS TO PAPER; PACKAGES; PACKAGING ELEMENTS; PACKING; PERFORMING OPERATIONS; STORING; TRANSPORTING; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUSTO PAPER

PROBLEM TO BE SOLVED: To provide a sealant film excellent in rigidity and impact resistance.SOLUTION: A sealant film 3 contains a laminate by laminating 10 or more layers of first resin layers 1 and second resin layers 2 alternatively. The first resin layer 1 is arranged in an outermost layer 3a of the laminate, the first resin layer 1 is a resin layer which mainly contains a linear polyethylene resin, a branched polyethylene resin or a polyethylene resin by mixing the linear and the branched, and has average resin density of 0.920 g/cmor less, and the second resin layer 2 consists of a polypropylene resin layer.SELECTED DRAWING: Figure 1 【課題】剛性および耐衝撃性に優れたシーラントフィルムを提供する。【解決手段】シーラントフィルム３は、第１の樹脂層１と第２の樹脂層２とが交互に１０層以上積層された積層体を含む。積層体の最外層３ａには第１の樹脂層１が配置され、第１の樹脂層１は、直鎖状ポリエチレン樹脂、分岐状ポリエチレン樹脂、又は直鎖状と分岐状とを混合したポリエチレン樹脂を主成分とし、平均樹脂密度が０．９２０ｇ／ｃｍ３以下の樹脂層であり、第２の樹脂層２はポリプロピレン樹脂層からなる。【選択図】図１