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Mylar® OL2 is a biaxially oriented polyester (OPET) film with an amorphous polyester heat seal layer. It is used as a heat sealable lidding film in packaging refrigerated and frozen foods. Mylar® OL2 is commercially available in nominal 50, 75 and 100 gauges.
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Mylar® OL2 provides good, generally peelable seals to polar substrates such as amorphous polyester (APET, also PETG), semicrystalline polyester (CPET), polyester coated paperboard, and polyvinylchloride (PVC). Mylar® OL2 does not seal to polyethylene, polypropylene, or polystryrene. Mylar® Specialty Films offers another family of lidding films (RL types) for sealing to these substrates. Mylar® OL2 can withstand freezing temperatures down to -40℉.
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Similar to Mylar® OL, heat seals with Mylar® OL2 are designed to be self venting and generally strippable from the above containers. Mylar® OL2 has a thicker seal layer than Mylar® OL and is recommended when the sealant thickness of Mylar® OL is not sufficient to make intimate contact with mating surface of the container. Mylar® OL2 produces higher seal strengths to most substrates than does Mylar® OL, and lower gauges tend to shred (film tear or break) more than Mylar® OL when peeled in cold environments. Shredding (film tear or break) can be minimized by using higher gauges.
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Corona Treatment (Mylar® OL2T): Selected gauges of Mylar® OL2 are available with corona treatment (on the side opposite the heat seal layer) to enhance printing and laminating. This film type is marketed by Mylar® Specialty Films as Mylar® OL2T. The film is treated to an initial dyne level of 54. The dyne level of treated lidding 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. Standard put-ups for Mylar® OL2T are the same as shown for Mylar® OL2.
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Anti-fog (Mylar® OLAF, OLAT): Selected gauges of Mylar® OL2 lidding films are available with anti-fogging capability to provide better clarity when stored and displayed in refrigerated conditions. This film type is marketed by Mylar® Specialty Films as Mylar® OLAF. Mylar® OLAF is also available with corona treatment on the side opposite the heat seal layer. This film is marketed by Mylar® Specialty Films as Mylar® OLAT.
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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® OL2 (as well as OL2T, OLAF, OLAFT) does not present special disposal 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; 100; 150
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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℃/75% RH/1 ATM |
| Gas Permeability - O2, 24 hr |
75 |
7 |
cc/100 in² |
ASTM D3985 22℃/75% RH/1 ATM |
| Gas Permeability - O2, 24 hr |
100 |
5 |
cc/100 in² |
ASTM D3985 22℃/75% RH/1 ATM |
| Gas Permeability - O2, 24 hr |
150 |
3 |
cc/100 in² |
ASTM D3985 22℃/75% RH/1 ATM |
| WVTR |
50 |
2.8 |
g/100 in²/day |
ASTM F1249 38℃, 90% RH |
| WVTR |
75 |
1.9 |
g/100 in²/day |
ASTM F1249 38℃, 90% RH |
| WVTR |
100 |
1.3 |
g/100 in²/day |
ASTM F1249 38℃, 90% RH |
| WVTR |
150 |
0.9 |
g/100 in²/day |
ASTM F1249 38℃, 90% RH |
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PHYSICAL
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| Elongation at Break MD |
50 - 150 |
110 |
% |
ASTM D882A |
| Elongation at Break TD |
50 - 150 |
80 |
% |
ASTM D882A |
| Modulus |
50 - 150 |
550 |
kpsi |
ASTM D822 |
| Tear (Graves) |
50 |
0.7 |
lb |
ASTM D1004 |
| Tear (Graves) |
75 |
0.9 |
lb |
ASTM D1004 |
| Tear (Graves) |
100 |
1.1 |
lb |
ASTM D1004 |
| Tear (Graves) |
150 |
1.3 |
lb |
ASTM D1004 |
| Tensile Strength MD (break) |
50 - 150 |
25 |
kpsi |
ASTM D882A |
| Tensile Strength TD (break) |
50 - 150 |
35 |
kpsi |
ASTM D882A |
| Unit Weight |
50 |
12.3 |
lb/ream |
ASTM E252 (0.5 m2) |
| Unit Weight |
75 |
18.3 |
lb/ream |
ASTM E252 (0.5 m2) |
| Unit Weight |
100 |
22.0 |
lb/ream |
ASTM E252 (0.5 m2) |
| Unit Weight |
150 |
33 |
lb/ream |
ASTM E252 (0.5 m2) |
| Yield (nominal) |
50 |
35,000 |
in²/lb |
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| Yield (nominal) |
75 |
23,500 |
in²/lb |
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| Yield (nominal) |
100 |
19,700 |
in²/lb |
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| Yield (nominal) |
150 |
13,100 |
in²/lb |
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| Core I.D. (Inches) |
Roll O.D. (Inches) |
Thickness (Gauge) |
Length (Feet) |
| 3 |
9 1/2 ± 1/4 |
50 |
8,600 |
| 3 |
9 1/2 ± 1/4 |
75 |
5,900 |
| 3 |
9 1/2 ± 1/4 |
100 |
4,900 |
| 3 |
13 ± 1/4 |
50 |
17,400 |
| 3 |
13 ± 1/4 |
75 |
11,900 |
| 3 |
13 ± 1/4 |
100 |
9,900 |
| 6 |
11 ± 1/4 |
50 |
8,700 |
| 6 |
11 ± 1/4 |
75 |
5,900 |
| 6 |
11 ± 1/4 |
100 |
5,000 |
| 6 |
14 ± 1/4 |
50 |
17,000 |
| 6 |
14 ± 1/4 |
75 |
11,700 |
| 6 |
14 ± 1/4 |
100 |
9,700 |
| 6 |
18 ± 1/4 |
50 |
31,200 |
| 6 |
18 ± 1/4 |
75 |
21,400 |
| 6 |
18 ± 1/4 |
100 |
17,900 |
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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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