HEAT-SEALABLE RESIN COMPOSITION, HEAT SEAL MATERIAL, PACKAGING MATERIAL, LID MATERIAL, AND PACKAGING CONTAINER

• Main Authors: SAKUMA, Masami, NAKANO, Shigenori, NISHIJIMA, Koichi, TAKAOKA, Hiroki
• Format: Patent
• Language: English; French; Japanese
• Published: 22.09.2022
• Subjects: ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; ADHESIVES; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; 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; DYES; HANDLING THIN OR FILAMENTARY MATERIAL; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ORGANIC MACROMOLECULAR COMPOUNDS; PACKAGES; PACKAGING ELEMENTS; PACKING; PAINTS; PERFORMING OPERATIONS; POLISHES; STORING; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; USE OF MATERIALS AS ADHESIVES

A heat-sealable resin composition including an ethylene-vinyl ester copolymer (A) and a tackifying resin (B), in which the content of a constituent unit derived from the vinyl ester included in the ethylene-vinyl ester copolymer (A) with respect to the total constituent units of the copolymer constituting the ethylene-vinyl ester copolymer (A) is 8 mass% or more, and the tackifying resin (B) includes an alicyclic hydrocarbon resin (B1) and an aromatic hydrocarbon resin (B2). L'invention concerne une composition de résine thermoscellable comprenant un copolymère éthylène-ester vinylique (A) et une résine donnant du collant (B), dans laquelle la teneur d'un motif constitutif dérivé de l'ester vinylique inclus dans le copolymère éthylène-ester vinylique (A) par rapport aux motifs constitutifs totaux du copolymère constituant le copolymère éthylène-ester vinylique (A) est supérieure ou égale à 8 % en masse, et la résine donnant du collant (B) comprend une résine hydrocarbonée alicyclique (B1) et une résine hydrocarbonée aromatique (B2). エチレン・ビニルエステル共重合体（Ａ）と、粘着付与樹脂（Ｂ）と、を含み、前記エチレン・ビニルエステル共重合体（Ａ）に含まれるビニルエステルに由来する構成単位の含有率が、前記エチレン・ビニルエステル共重合体（Ａ）を構成する共重合体の全構成単位に対して８質量％以上であり、前記粘着付与樹脂（Ｂ）は、脂環族系炭化水素樹脂（Ｂ１）と、芳香族系炭化水素樹脂（Ｂ２）とを含むヒートシール性樹脂組成物。