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Mylar® RL71AF is a biaxially oriented polyester (BOPET) film with a sealant layer designed to seal to polypropylene (PP) and pulp fiber trays. It is used as a heat sealable lidding film in packaging frozen and refrigerated foods. The heat seal layer provides a peelable seal over a broad temperature range.
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Mylar® RL71AF is for frozen, refrigerated, or ambient products that will remain at their current condition, or intend to be reheated in the microwave only. Heat seals with Mylar® RL71AF are designed to be self venting during the cooking process. Mylar® RL71AF can withstand freezing temperatures down to -40℉.
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Adhesion Promoting Treatment (Mylar® RL71AT and Mylar® RL71AP): Select gauges of Mylar® RL71AF are available with corona and chemical adhesion promoting treatments (on the opposite side of film from the heat seal layer) to enhance printing and laminating. These film types are marketed by Mylar® Specialty Films as Mylar® RL71AT and RL71AP, respectively. The dyne level of corona treated films may decline with storage, and in-line corona treatment may be required during subsequent printing or laminating to increase the dyne level to a value adequate to get desired ink or laminate adhesion.
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Food Contact Status -
Please contact your Mylar® Specialty Films representative to receive the Regulatory Compliance documents
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Disposal of Mylar® RL71AF does not present special problems. It can be buried as a relatively inert material in a landfill or burned in an incinerator with normal refuse. The incinerator should have sufficient draft to exhaust all combustion products through the stack to avoid exposure to irritating fumes. The disposal method should comply with local, state and federal regulations.
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| Available Thickness [Gauge] |
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50; 75
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| Property |
Thickness |
Value |
Units |
Test |
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BARRIER
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| Gas Permeability - O2, 24 hr |
50 |
9 |
cc/100 in² |
ASTM D3985 22℃/50% RH/1 ATM |
| Gas Permeability - O2, 24 hr |
75 |
7 |
cc/100 in² |
ASTM D3985 22℃/50% RH/1 ATM |
| WVTR |
75 |
1.9 |
g/100 in²/day |
ASTM F1249 38℃, 90% RH |
| WVTR |
50 |
2.8 |
g/100 in²/day |
ASTM F1249 38℃, 90% RH |
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PHYSICAL
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| Elongation at Break MD |
50, 75 |
110 |
% |
ASTM D882A |
| Elongation at Break TD |
50, 75 |
80 |
% |
ASTM D882A |
| Tensile Strength MD (break) |
50, 75 |
25 |
kpsi |
ASTM D882A |
| Tensile Strength TD (break) |
50, 75 |
35 |
kpsi |
ASTM D882A |
| Unit Weight |
75 |
18.7 |
lb/ream |
ASTM E252 (0.5 m2) |
| Unit Weight |
50 |
12.8 |
lb/ream |
ASTM E252 (0.5 m2) |
| Yield (nominal) |
75 |
23,100 |
in²/lb |
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| Yield (nominal) |
50 |
33,700 |
in²/lb |
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Mylar® Specialty Films U.S. Limited Partnership
3600 Discovery Drive
Chester, VA 23836-6436 USA
Tel: (800) 635-4639
Fax: (804) 530-9867
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Note: These values are typical performance data for Mylar® Specialty Films' polyester film; they are not intended to be used as design data. We believe this information is the best currently available on the subject. It is offered as a possible helpful suggestion in experimentation you may care to undertake along these lines. It is subject to revision as additional knowledge and experience is gained. Mylar® Specialty Films makes no guarantee of results and assumes no obligation or liability whatsoever in connection with this information. This publication is not a license to operate under, or intended to suggest infringement of, any existing patents.
CAUTION: Do not use in medical applications involving permanent implantation in the human body (Mylar® Specialty Films Medical Policy). For other medical applications, see the Medical Caution Statement. Mylar® Specialty Films accepts no liability for use of it's products in medical applications not reviewed and approved by Mylar® Specialty Films or for product misuse. Mylar® Specialty Films supplies products to an agreed specification and does not manufacture products designed specifically for medical end use.
Melinex®, Mylar® and Melinex® STTM are registered trademarks of Mylar® Specialty Films U.S. Limited Partnership.
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