BUBBLE CUSHIONING SHEET

• Main Authors: MIMA TETSUYA, SATO MOTOYASU, HIRATA HIDEKI
• Format: Patent
• Language: English; Japanese
• Published: 05.02.2015
• 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; PACKAGES; PACKAGING ELEMENTS; PACKING; PERFORMING OPERATIONS; STORING; TRANSPORTING

PROBLEM TO BE SOLVED: To provide a bubble cushioning sheet in which weight saving and strength are high-dimensionally balanced.SOLUTION: A bubble cushioning sheet 1 includes a cap film 14 having a large number of projections and a base film 10 stuck to the cap film 14, and has closed cells 22 each formed by enclosing gas in each projection, whereby the bubble cushioning sheet 1 exhibits a cushioning effect. The cap film 14 is formed from at least a resin composition which contains 30-95 wt.% of a linear low density polyethylene containing less than 5 wt.% copolymer, and a high density polyethylene in an amount of preferably 5-40 wt.%, and may contain a low density polyethylene as the balance. Suitably, the cap film 14 has a weight per unit area of 25-40 g/m. 【課題】軽量化と強度とが高次元でバランスされた気泡緩衝シートを提供する。【解決手段】多数の突部を有するキャップフィルム１４と、当該キャップフィルムに貼り合わされるベースフィルム１０と、を備え、前記突部に気体が封入された独立気泡２２を有することによって緩衝効果を発揮する気泡緩衝シート１であって、少なくとも前記キャップフィルムは、コモノマー量を５重量％未満とする直鎖状低密度ポリエチレンの３０〜９５重量％と高密度ポリエチレンを好ましくは５〜４０重量％とを含有し、残部として、低密度ポリエチレンを含有することができる樹脂組成物から形成され、好適には、単位面積当たりの重量が２５〜４０ｇ／ｍ２気泡緩衝シート。【選択図】図１