INJECTION MOLDED CLOSURE ARTICLE COMPRISING A COMPOSITION BLEND OF AT LEAST ONE SUBSTANTIALLY LINEAR POLYOLEFIN ELASTOMER COMPONENT AND AT LEAST ONE PARTIALLY NEUTRALIZED ETHYLENE ACID COPOLYMER RESIN COMPONENT

• Main Authors: BONAVOGLIA, Barbara, BITINIS, Georgia Natacha Eftalie
• Format: Patent
• Language: English; French; German
• Published: 04.09.2024
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULARARTICLES; INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

An injection molded closure article comprising a composition blend of: (a) at least one substantially linear polyolefin elastomer component which has a melt index of, for example, from 0.5 dg/min to 40 dg/min and a density of, for example, from 0.850 g/cc to 0.910 g/cc; and (b) at least one neutralized ethylene acid copolymer resin component which has a melt index of, for example, from 0.5 dg/min to 25 dg/min, and is at least partially neutralized at a range of from 20% to 70% neutralization; a molded closure article produced from the above composition blend, wherein the molded closure article has a high gloss, low haze, high impact resistance, and high chemical resistance; and a process of manufacturing the above molded closure article.