Polyester packaging films producing a peelable seal

A heat sealable packaging film producing a peelable seal formed from a blend, the blend comprising:

• (A) about 99 to about 75 weight percent of a copolyester comprising:
• i. diacid residues of at least about 50 mole percent terephthalic acid, naphthalenedicarboxylic acid, 1,4-cyclohexanedicarboxylic acid, or mixtures thereof;
• and
• ii. diol residues of about 90 to about 35 mole percent ethylene glycol and about 10 to about 65 mole percent of at least one of diethylene glycol or 1,4-cyclohexanedimethanol;
• and
• (B) about 1 to about 25 weight percent of an impact modifying polymer selected from copolymers and terpolymers having the respective general formulas E/Y and E/X/Y wherein:
• X represents residues derived from
• wherein R1 is alkyl of up to about 8 carbon atoms and R2 is hydrogen, methyl, or ethyl, and X constitutes about 1 to about 30 weight percent of terpolymer E/X/Y;
• Y represents residues derived from glycidyl methacrylate, glycidyl acrylate, allyl glycidyl ether or 3,4-epoxy-1-butene, and Y constitutes about 0.5 to about 10 weight percent of copolymer E/Y and terpolymer E/X/Y;
• and
• E represents ethylene residues that constitute the remainder of the copolymer or terpolymer;
• wherein copolyester component A is based on 100 mole percent diacid residues and 100 mole percent diol residues and the weight percentages are based on the total weight of components A and B.