VARANEX™ Barrier Films Product Grade Guide
VARANEX™ Barrier Films are coextruded mul]layered films containing a layer of SARAN™ Barrier Resins integrally sandwiched between outer layers of polyolefins. The result is a product that offers the proven barrier properties of SARAN Barrier Resins plus the machinability, printability, and functionality of the polyolefin skins.
They can be laminated to a variety of substrates, including paper, foil, PVC, and numerous films to offer a balance of barrier proper]es, toughness, chemical resistance, soaness, flexibility, acractive appearance, and good economics in a single film structure. In many applications, the use of VARANEX™ can eliminate the need for additonal materials resulting in significant cost savings.
This five layer coextruded film offers many outstanding features. The structure is LDPE/EVA/PVDC/EVA/LDPE.
Advantages of VARANEX™ Barrier Films
• Barrier protec]on from gases, water vapor, and aromas
• Barrier level remains unaffected by high humidity environments
• Chemical resistance from most acids, bases, foods, pharmaceuticals and alcohols
• Machinability traits desired by processors
• Laminating versatility
Process VARANEX barrier films are manufactured using a coextrusion process.The main uses for VARANEX™ films are:
••Food and beverage packaging – VARANEX films comply with U.S. FDA regulations for food and beverage contact and are suitable for prepackaged cheeses and meats. They are also used to seal screw-¬‐cap closures for wine bocles, offering an oxygen barrier that helps preserve the natural aroma of wine.
••Medical – VARANEX films are used to make ostomy appliances and blister packs for pharmaceuticals.
••Laminating applications – VARANEX films can be bonded by heat and pressure to foams, paper, plastics, foil, fabrics, and textiles.
Table |
Thickness (mm) |
Yield (m/Kg)
|
Water-Vapor Trasmission Rate |
Water-Vapor Trasmission Rate
|
VARANEX 450 Film |
25.4 |
39.3 |
13.3 |
5.5 |
VARANEX 451 Film |
38.1 |
25.7 |
7.8 |
5.1 |
VARANEX 552 Film |
50.8 |
19.4 |
6.5 |
4.5 |
VARANEX 553 Film |
76.2 |
12.9 |
4.3 |
2.9 |
VARANEX 554 Film |
101.6 |
9.7 |
3.3 |
2.2 |
VARANEX 456 Film |
152.4 |
6.4 |
1.3 |
0.8 |
(1) Oxygen Transmission Rate: cc/m2 day - atm 23 C°
(2) Water Vapor Transmission Rate: g/m2 day - 38 C° - 90 % RH