Patent · US Active

Hazy polyester film with improved technology

US8013043B2 · kind B2 · utility

0Cited by

3References

23Claims

0Family size

Assignee

Mitsubishi Polyester Film GmbH · US

Inventors

Martin Jesberger · Mainz, DE
Silke Richter · Wiesbaden, DE
Thomas Vogel · Griesheim, DE
Hans Mahl · Eltville am Rhein, DE
Gisbert Bammert · Oestrich-Winkel, DE

Key dates

Filing date	Sep 14, 2009
Grant date	Sep 6, 2011
Priority date	—
Expiry date	Nov 13, 2029

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/256
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

A hazy polyester film with a thickness in the range from 10 to 100 μm including thermoplastic polyester as the main constituent and barium sulfate with a particle size in the range from 0.1 to 0.5 μm, expressed as d50, in an amount in the range from 5 to 25% by weight. The films exhibit a transparency, measured to ASTM-D 1003, of greater than 56% and a haze in the range from 40 to 95%. Owing to their particular optical properties in the form of high transparency with simultaneous scattering action in the form of volume scatter, the film is suitable particularly for use for internal and external window glazing, for interior paneling in bright rooms, for exhibition construction, in vehicles and buildings, in the lighting sector and in shopfitting and shelving.

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