Device for tear analysis of films

US11441980B2 · kind B2 · utility

Assignee

• DOW GLOBAL TECHNOLOGIES LLC · US

Inventors

• Sanjay C. Solanki · Midland, US
• Donald L. McCarty, II · Midland, US
• Robert A. Gunther · Elmwood Park, US
• Jin Wang · Midland, US
• Kyle A. Myers · Midland, US
• Margaret C. Hayes · Midland, US

Key dates

• Filing date: Apr 30, 2018
• Grant date: Sep 13, 2022
• Expiry date: Aug 3, 2038

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N2203/0617
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A system and method for performing a tear test are described herein. The system may include a fixed clamping station configured to hold a first portion of a film specimen and a movable clamp coupled to an actuator, the movable clamp may be configured to hold a second portion of the film specimen. The movable clamp may be configured to move in a direction away from the fixed clamping station to tear the film specimen. The system may include a slitter blade configured to cut the film specimen at a location between the fixed clamping station and the movable clamp. The system may include a load cell coupled to one of the fixed clamping station and the movable clamp. The load cell may be configured to measure a force associated with tearing of the film specimen. The actuator may be configured to manipulate the movable clamp along a trajectory.