초록

A flexible multi-layer structure having at least one layer pigmented with a color and/or an energy absorber with the outer two layers consisting of pure polytetrafluoroethylene to provide a food contacting surface.

대표청구항 ▼

The method of manufacturing a thin, flexible film for use as a cooking aid comprising the steps of: (a) forming a first layer of pure polytetrafluoroethylene by depositing a liquid dispersion on a carrier, drying and sintering said liquid dispersion; (b) forming a second layer on said first layer by

The method of manufacturing a thin, flexible film for use as a cooking aid comprising the steps of: (a) forming a first layer of pure polytetrafluoroethylene by depositing a liquid dispersion on a carrier, drying and sintering said liquid dispersion; (b) forming a second layer on said first layer by depositing a liquid co-dispersion of polytetrafluoroethylene and a particulate energy-absorbing material, the percent solid content of said particulate energy-absorbing material being between 1% to 20%, drying and sintering said liquid co-dispersion; and (c) subsequently, forming a third layer of pure polytetrafluoroethylene on the second layer by depositing a second liquid dispersion, drying and sintering said second liquid dispersion.