Mylar® 852

Product Description

Mylar® 852 is a heat sealable polyester film with improved handleability, particularly suitable for metallising and use on high speed sealing lines. The film has a coextruded heat sealable layer of an amorphous co-polymer of polyester. The non heat sealable side exhibits the properties of standard polyester film. The film is available in thicknesses of 15, 20 and 30 microns


Practical Information

Mylar® 852 is specially treated to give improved handleability during machining. The non heat-sealable side is usually the surface which is metallised. The heat-sealable surface of Mylar® 852 can be sealed to itself and also to plain Polyester film. This allows either fin or overlap seals to be made on conventional packaging machines. Mylar® 852 has an exceptionally wide heat seal range (140°C to 200°C) and outstanding hot tack properties. By metallising Mylar® 852 the advantages of high barrier and heat sealablity can be combined. The seal side of Mylar® 852 is normally wound on the inside.

Food Contact Advice

Mylar® 852 is compliant with European Union food contact legislation (90/128/EC and amendments). For individual country and specific application information please contact your DuPont Teijin Films representative. All gauges of Mylar® 852 comply with the Food and Drug Administration regulation 21 CFR 177.1630 -- Polyethylene phthalate polymers (f), (g) and (h). This regulation describes films which may be safely used in contact with all types of food excluding alcoholic beverages. Uncoated films such as Mylar® 852 can be used to contain foods during oven cooking or oven baking at temperatures above 121ºC (250 °F).


Disposal of Mylar® 852 does not present special disposal problems. Where waste occurs in a clean, uncontaminated form it can be recycled into polyester fibre. In most circumstances, once Mylar® 852 has been laminated, coated, printed or metallised, incineration with Energy Recovery is the most environmentally efficient recovery route. Mylar® 852 can also be burned in an incinerator with normal refuse or can be buried as a relatively inert material in a landfill. The disposal method should comply with appropriate local and country regulations.

Typical Properties

Standard Put-ups