MYLAR® OL

Product Description
Mylar® OL 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® OL is commercially available in nominal 50, 75, 100 and 150 gauges.

Mylar® OL provides peelable seals to polar substrates such as amorphous polyester (APET, also PETG), semicrystalline polyester (CPET), polyester coated paperboard, and polyvinylchloride (PVC). Mylar® OL 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® OL can withstand freezing temperatures down to -40℉.


Heat seals with Mylar® OL are designed to be self venting and generally strippable from the recommended containers. Fifty (50) gauge film is more prone to shredding. Shredding (film tear or break) can be minimized or eliminated by using higher gauges.



Special Features
Corona Treatment (Mylar® OLT): Selected gauges of Mylar® OL 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® OLT. 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® OLT are the same as shown for Mylar® OL.


Approvals
Food Contact Status - Please contact your Mylar® Specialty Films representative to receive the Regulatory Compliance documents



Disposal
Disposal of Mylar® OL (and OLT) 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.


Typical Properties
Available Thickness [Gauge]
50;    75;    100;    150


Property Thickness Value Units Test
BARRIER
Gas Permeability - O2, 24 hr  100  cc/100 in²  ASTM D3985 22℃/75% RH/1 ATM 
Gas Permeability - O2, 24 hr  150  cc/100 in²  ASTM D3985 22℃/75% RH/1 ATM 
Gas Permeability - O2, 24 hr  50  cc/100 in²  ASTM D3985 22℃/75% RH/1 ATM 
Gas Permeability - O2, 24 hr  75  cc/100 in²  ASTM D3985 22℃/75% RH/1 ATM 
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 
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 
 
PHYSICAL
Elongation at Break MD  50 - 150  110  ASTM D882A 
Elongation at Break TD  50 - 150  80  ASTM D882A 
Tensile Strength MD (break)  50 - 150  25  kpsi  ASTM D882A 
Tensile Strength TD (break)  50 - 150  35  kpsi  ASTM D882A 
Unit Weight  100  21  lb/ream  ASTM E252 (0.5 m2
Unit Weight  150  32  lb/ream  ASTM E252 (0.5 m2
Unit Weight  50  11.5  lb/ream  ASTM E252 (0.5 m2
Unit Weight  75  17.3  lb/ream  ASTM E252 (0.5 m2
Yield (nominal)  100  20,500  in²/lb   
Yield (nominal)  150  13,500  in²/lb   
Yield (nominal)  50  37,700  in²/lb   
Yield (nominal)  75  24,600  in²/lb   
 
THERMAl
Heat Seal Strength    470  g/in  250℉, 0.35 sec, 20 psi 



Contact Info
Mylar® Specialty Films U.S. Limited Partnership
3600 Discovery Drive
Chester, VA 23836-6436 USA
Tel: (800) 635-4639
Fax: (804) 530-9867



Disclaimer
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.