Patent · US Active

Breathable and microporous thin thermoplastic film

US11931229B2 · kind B2 · utility

0Cited by

50References

21Claims

0Family size

Assignee

BERRY FILM PRODUCTS COMPANY, INC. · US

Inventors

Leopoldo V. Cancio · Vero Beach, US
Frank Eschenbacher · Schnelldorf, DE
Jerry Ford · Maineville, US

Key dates

Filing date	Apr 15, 2019
Grant date	Mar 19, 2024
Priority date	—
Expiry date	Oct 30, 2041

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/27
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

Breathable, thermoplastic films, laminates, and methods of making films having a basis weight less than or equal to 15 gsm and a water vapor transmission rate of at least about 500 grams H2O/24-hour/m2, wherein the film has a ratio of the MD load at break to the CD load at break of less than about 10, and at least one of a machine-direction notched Elmendorf tear strength of at least about 5 g or a machine-direction notched trapezoidal tear strength of at least about 15 g.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.