COMPOSITIONS FOR THE PREPARATION OF VOID-CONTAINING ARTICLES

Disclosed are novel compositions for the preparation of void-containing articles comprising a polymer matrix and a voiding agent. The voiding agent comprises at least one first polymer and at least one second polymer, which are selected on the basis of physical properties such as glass transition te...

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Bibliographic Details
Main Authors HELTON, TONY, WAYNE, SHARPE, EMERSON, ESTON, JR, SHELBY, MARCUS, DAVID
Format Patent
LanguageEnglish
French
German
Published 24.06.2009
Subjects
AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G
CHEMISTRY
COMPOSITIONS BASED THEREON
COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
GENERAL PROCESSES OF COMPOUNDING
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
WORKING-UP
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Summary:Disclosed are novel compositions for the preparation of void-containing articles comprising a polymer matrix and a voiding agent. The voiding agent comprises at least one first polymer and at least one second polymer, which are selected on the basis of physical properties such as glass transition temperature, tensile modulus, melting point, surface tension, and melt viscosity. Shaped articles such as sheet, film, bottles, tubes, labels, and sleeves may prepared from these compositions. Also disclosed are polyester. shrink films prepared using a voiding agent comprising a novel blend of cellulosic and olefinic polymers. The resulting shrink films have better opacity, lower density, reduced shrink force, and improved printability as compared with most standard voiding agents. The films are useful for sleeve label and other shrink film applications and their lower density allows them to be readily separated from soft drink bottles, food containers and the like during recycling operations.
Bibliography:Application Number: EP20040820763