Patents

Biaxially Oriented Polyester Film

June 7, 2005

A biaxially oriented polyester film prepared by biaxially drawing a polyester sheet was patented. The film has a glass transition temperature (Tg) of 60° C. or higher, in the longitudinal and transverse directions, wherein the biaxially oriented film has a specific gravity of 1.38 or less and a dead-fold retainability of at least 60% defined as below: Dead-fold retainability (%)=(180?ı)?100/180 wherein ı is an angle formed when a polyester film sheet is folded under a pressure of 30 psi for three seconds at room temperature and the folded sheet is kept at a vertical position for one hour.

  • 2015 International Buyers Guide

    2015 International Buyers Guide

    July 21, 2015
    Our annual Buyers’ Guide lists nearly every supplier and producer involved with the global nonwovens industry.

  • Raw Materials Round Up

    Raw Materials Round Up

    Karen McIntyre, editor||June 8, 2015
    Suppliers create additives, preservatives and other specialties to help nonwovens makers meet their goals.

  • Keeping It Clean

    Keeping It Clean

    Tara Olivo, associate editor||June 8, 2015
    Convenience and continued innovation keeps the household wipes market thriving.