Coextruded, hot-sealable and peelable polyester film having...

Details Coextruded, hot-sealable and peelable polyester film having... Coextruded, hot-sealable and peelable polyester film having...

2007-10-30

2007-10-30

Cano, Milton I. (Department: 1774)

Stock material or miscellaneous articles

Structurally defined web or sheet

Including components having same physical characteristic in...

C428S213000, C428S220000

Reexamination Certificate

active

10953664

ABSTRACT:
The invention more particularly relates to a coextruded, transparent, biaxially oriented polyester film comprising a base layer (B) and a heatsealable top layer (A) which is peelable from at least APET, the heatsealable and peelable top layer (A) consisting ofa) 80-98% by weight of polyester andb) 2-10% by weight of inorganic and/or organic particles having an average diameter d50of from 2.0 to 8.0 μm (based on the mass of the top layer (A)),whereinc) the polyester being composed of 30-95 mol % of units which derive from at least one aromatic dicarboxylic acid and 5-70 mol % of units which derive from at least one aliphatic dicarboxylic acid,d) the ratio of particle size d50and layer thickness dAof the top layer (A) being greater than 1.3 ande) the layer thickness of the top layer (A) dAbeing from 0.5 to 2.5 μm.

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