Films made of polyethylene blends for improved bending stiffness and high MD tear resistance

US12152135B2 · kind B2 · utility

Assignee

• ExxonMobil Chemical Patents Inc. · US

Inventors

• Marianne F. M. Smits · Mortsel, BE
• Ying Zou · Shanghai, CN
• Etienne R. H. Lernoux · Grez-Doiceau, BE
• Zhen Zhu · Lake Forest, US
• Xiao-Chuan Wang · Shanghai, CN
• Achiel J. M. Van Loon · Ekeren, BE
• Maria Josefina CARBONE · Testelt, BE

Key dates

• Filing date: Mar 3, 2021
• Grant date: Nov 26, 2024
• Expiry date: Jan 29, 2042

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/1352
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

Provided herein are monolayer films, and also multilayer films comprising a core, a subskin disposed on the core, and a skin disposed on the subskin. The films may have an Elmendorf tear in MD greater than about 7.0 g/μm, a dart impact greater than about 6.0 g/μm, and a 1% secant modulus greater than about 200 MPa. In multilayer films, the core comprises a first polyethylene blend comprising an ethylene 1-hexene copolymer and a high density polyethylene composition in an amount between about 0 wt. % and about 40 wt. %. Further provided herein are bags and laminates comprising the present films.