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Rulon Bearings

DuPont Teijin Films Mylar® MLB Polyester Film, 48 Gauge
Categories: Polymer; Film; Thermoplastic; Polyester, TP; Polyester Film

Material Notes: Product Description: Mylar® MLB is an uncoated, transparent, polyester film designed for use as a component of a lamination structure and may be suitable for use in medical applications. Mylar® MLB is commercially available in nominal 48 and 300 gauge. Mylar® MLB is available with corona treatment on one or both sides. These products are known as Mylar® MLBT and MLBT2 respectively and are not offered in the 300 gauge range

General Product Info: Mylar® MLB polyester film frequently is selected as a component of a laminated structure because of its ability to contribute great strength, high temperature resistance and flavor/odor barrier. Its sparkling clarity and relative insensitivity to heat and humidity make it an ideal print carrier and outer ply of many laminated food packaging structures. Retention of properties over a temperature range from -100°F to 300°F permits uses requiring freezer storage temperatures followed by heating for warming, cooking or ovenable applications. The chemical resistance and barrier to acids, weak bases, greases and oils, detergents and other active ingredients make Mylar® MLB useful in containing many "hard-to-hold" food or non-food products. Mylar® MLB is not degraded by standard sterilization procedures involving steam retorts, gamma or cobalt radiation, ethylene oxide gas exposure or hydrogen peroxide immersion.

Typical Applications: A basic lamination would combine plain or printed Mylar® MLB with a heat sealable ply consisting of LDPE, LLDPE, EVA, ionomer, acid copolymer, PVC or other materials using adhesive or extrusion laminating techniques. Such structures might be suitable for heat sealed pouches for frozen foods, heat-in applications, packages not requiring high oxygen barrier, some condiments and some medical device applications. If greater gas barrier is required, a layer of foil, PVdC or EVOH may be inserted between the Mylar® MLB and the sealant layer, or barrier adhesives or sealant layers may be utilized. Typical applications might include processed meats, condiments, nuts, cheese, sauces and dry mixes.

Approvals: FDA Food Contact Status - All gauges of Mylar® LB comply with the Food and Drug Administration regulation 21 CFR 177.1630 -- Polyethylene Terephthalate 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® LB can be used to contain foods during oven cooking or oven baking at temperatures above 250°F. Drug Master File - This product is listed in our Drug Master File.

Information provided by DuPont.

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Physical PropertiesMetricEnglishComments
Density 1.39 g/cc0.0502 lb/in³Typical Mylar®; ASTM D1505
Water Vapor Transmission 43.5 g/m²/day
@Temperature 38.0 °C
2.80 g/100 in²/day
@Temperature 100 °F
90% RH; ASTM F1249
Thickness 12.2 microns0.480 mil
 
Mechanical PropertiesMetricEnglishComments
Film Elongation at Break, MD 110 %110 %ASTM D882A
Film Elongation at Break, TD 80 %80 %ASTM D882A
Tensile Modulus 3.79 GPa550 ksiASTM D882
Graves Tear Strength 0.123 kN/m0.700 pliASTM D1004
Film Tensile Strength at Break, MD 186 MPa27000 psiASTM D882A
Film Tensile Strength at Break, TD 234 MPa34000 psiASTM D882A
 
Thermal PropertiesMetricEnglishComments
Specific Heat Capacity 1.17 J/g-°C0.280 BTU/lb-°FTypical Mylar®
Melting Point 254 °C489 °FTypical Mylar® via DSC
Maximum Service Temperature, Air 149 °C300 °F
Minimum Service Temperature, Air -73.3 °C-100 °F
Shrinkage, MD 2.2 %
@Temperature 150 °C,
Time 1800 sec
2.2 %
@Temperature 302 °F,
Time 0.500 hour
Unrestrained
Shrinkage, TD 1.3 %
@Temperature 150 °C,
Time 1800 sec
1.3 %
@Temperature 302 °F,
Time 0.500 hour
Unrestrained
 
Optical PropertiesMetricEnglishComments
Refractive Index 1.64 - 1.671.64 - 1.67typical of Mylar®
Haze 4.0 %4.0 %ASTM D1003
Gloss 200 %200 %20°; ASTM D2457
Transmission, Visible 90 %90 %transparent; thickness not quantified
 
Compliance PropertiesMetricEnglishComments
FDA YesYesSee notes for details.
 
Descriptive Properties
Clarity76 percentASTM D1746
Gas Permeability (Base film)9 cc/100 in2O2, 24 hr; ASTM D3985 77°F/75% RH/1 ATM
Unit Weight10.4 in2/lbASTM E252 (0.5 m²)
Yield (nominal)14700 in2/lb

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

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