Patent · US Active

Polyester film with low mechanical strength

US7514141B2 · kind B2 · utility

3Cited by

15References

23Claims

0Family size

Assignee

Mitsubishi Polyester Film GmbH · US

Inventors

Oliver Klein · Saarlouis, DE
Herbert Peiffer · Mainz, DE
Gottfried Hilkert · Saulheim, DE

Key dates

Filing date	Apr 3, 2007
Grant date	Apr 7, 2009
Priority date	—
Expiry date	Apr 3, 2027

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/31786
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

The invention relates to a biaxially oriented polyester film having a base layer (B) which comprises at least 80% by weight of a polyester comprised of from 55 to 90 mol % of units deriving from at least two aromatic dicarboxylic acids and of from 5 to 45 mol % of units deriving from at least one aliphatic dicarboxylic acid, where the total of the dicarboxylic-acid-derived molar percentages is 100. The film features ultimate tensile strength of ≦100 N/mm2 and modulus of elasticity of ≦3000 N/mm2.

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