Songhan Plastic Technology Co.,Ltd.

DuPont Teijin Films Mylar® P25T Polyester Film, 75 Gauge

Category Polymer , Film , Thermoplastic , Polyester, TP , Polyester Film
Manufacturer DuPont Teijin Films (DTF)
Trade Name Mylar®
Port Ningbo port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF DuPont Teijin Films Mylar® P25T Polyester Film, 75 Gauge.pdf
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Material Notes:
Product Description: Mylar® P25T is a transparent polyester packaging film designed to be combined with a sealant layer, where the resulting structure will be shallow draw thermoformed. It has a corona surface treatment for improved bonding to inks and adhesives. Standard thicknesses are 50 and 75 gauge, although other thicknesses may be available upon special request. The treated side of P25T normally is wound toward the core, but this can be reversed upon request.General Product Info: The 50 gauge film can be formed to a maximum draw depth of 1 1/8 in (28 mm), where the draw ratio (area/area) does not exceed 2.0. The 75 gauge P25T can be thermoformed to a maximum draw depth of 1 1/2 in (38 mm) with a maximum draw ratio of 2.25. Good temperature control is essential for satisfactory thermoforming. Observation of excessive web thinning and/or frequent "poppers" during thermoforming usually indicate that the forming temperature should be increased. The preferred process for making multilayered structures with P25T is through adhesive lamination, because relatively low web temperatures can be used. While extrusion coating also is an option, extra care must be taken to prevent unwanted stretching of the web. For the same reasons, care must be exercised when subjecting P25T to any converting process involving heating or drying.Combinations of P25T and a sealant layer are used in peelable lidding, medical packaging, and as the formed web in hermetically sealed pouches for "heat-in-bag" applications for frozen entrees and vegetables. It is also used in similar applications, particularly where the oxygen barrier properties provided by PVdC-coated films are not required.Approvals: FDA Food Contact Status - All gauges of Mylar® P25T comply with the Food and Drug Administration regulation 21 CFR 177.1630 -- Polyethylene phthalate polymers. This regulation describes films which may be safely used in contact with all types of food excluding alcoholic beverages. Uncoated films such as Mylar® P25T can be used to contain foods during oven cooking or oven baking at temperatures above 250°F.Information provided by DuPont.
Physical Properties Metric English Comments
Density 1.39 g/cc
0.0502 lb/in³
Typical Mylar®; ASTM D1505
Water Vapor Transmission 29.5 g/m²/day

@Temperature 38.0 °C
1.90 g/100 in²/day

@Temperature 100 °F
90% RH; ASTM F1249
Coating Weight 25.9 g/m²
16.2 lb/ream
0.5 m<sup>2</sup>; ASTM E252
Mechanical Properties Metric English Comments
Film Elongation at Break, MD 170 %
170 %
Film Elongation at Break, TD 140 %
140 %
Secant Modulus, MD 3.17 GPa
460 ksi
Secant Modulus, TD 3.38 GPa
490 ksi
Coefficient of Friction, Static 0.50
ASTM D1894
Graves Tear Strength 0.158 kN/m
0.900 pli
ASTM D1004
Film Tensile Strength at Break, MD 152 MPa
22000 psi
Film Tensile Strength at Break, TD 179 MPa
26000 psi
Thermal Properties Metric English Comments
Specific Heat Capacity 1.17 J/g-°C
0.280 BTU/lb-°F
Typical Mylar®
Melting Point 254 °C
489 °F
Typical Mylar® via DSC
Maximum Service Temperature, Air 121 °C
250 °F
Shrinkage, MD 2.8 %

@Temperature 150 °C,
Time 1800 sec
2.8 %

@Temperature 302 °F,
Time 0.500 hour
Shrinkage, TD 2.5 %

@Temperature 150 °C,
Time 1800 sec
2.5 %

@Temperature 302 °F,
Time 0.500 hour
Optical Properties Metric English Comments
Haze 6.0 %
6.0 %
ASTM D1003
Gloss 105 %
105 %
20°; ASTM D2457
Transmission, Visible 90 %
90 %
transparent; thickness not quantified
Descriptive Properties Value Comments
Clarity 0.7
ASTM D1746
Gas Permeability (Base film) 7 cc/100 in2
O2, 24 hr; ASTM D3985 77°F/75% RH/1 ATM
Yield (nominal) 26700 in2/lb
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