Transparent, Sealable, Flame-Retardant Polyester Film, Method For The Production And Use Thereof
Patent #: 7,157,132
Inventor(s): Ursula Murschall, Ulrich Kern, Andreas Stopp, Guenther Crass and Herbert Peiffer
Company: Mitsubishi Polyester Film GmbH
Patented is a polyester film that has a base layer B made from a thermoplastic polyester that has a sealable outer layer A. On the other side of the base layer is a nonsealable outer layer C. The outer layers A and C comprise at least one antiblocking agent. The film comprises at least one UV absorber and at least one flame retardant. The sealable outer layer A has a minimum sealing temperature of less than 110° C. and a seal seam strength of at least 1.3 N/15 mm. The sealable outer layer A has a roughness value, Ra, of less than 30 nm.
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