Multilayer film used with flexible packaging
This disclosure describes a multilayer plastic film useful in packaging. The film includes layers 1-18, respectively: a PE material layer, a PE material layer, an adhesive resin material layer, a polyamide material layer, an EVOH material layer, a polyamide material layer, an adhesive resin material layer, a PE material layer, a ULDPE material layer, a ULDPE material layer, a PE material layer, an adhesive resin material layer, a polyamide material layer, an EVOH material layer, a polyamide material layer, an adhesive resin material layer, a PE material, and a PE material layer.
1. A multilayer film for use in making a bag for bag in a box packaging, comprising:
a first layer comprising a polyethylene material;
a second layer adjacent the first layer comprising a polyethylene material;
a third layer adjacent the second layer comprising an adhesive resin material;
a fourth layer adjacent the third layer comprising a polyamide material;
a fifth layer adjacent the fourth layer comprising an EVOH material;
a sixth layer adjacent the fifth layer comprising a polyamide material;
a seventh layer adjacent the sixth layer comprising an adhesive resin material;
an eighth layer adjacent the seventh layer comprising a polyethylene material;
a ninth layer adjacent the eighth layer comprising a ULDPE material;
a tenth layer adjacent the ninth layer comprising a ULDPE material;
an eleventh layer adjacent the tenth layer comprising a polyethylene material;
a twelfth layer adjacent the eleventh layer comprising an adhesive resin material;
a thirteenth layer adjacent the twelfth layer comprising a polyamide material;
a fourteenth layer adjacent the thirteenth layer comprising an EVOH material;
a fifteenth layer adjacent the fourteenth layer comprising a polyamide material;
a sixteenth layer adjacent the fifteenth layer comprising an adhesive resin material;
a seventeenth layer adjacent the sixteenth layer comprising a polyethylene material, and
an eighteenth layer adjacent the seventeenth layer comprising a polyethylene material.
2. The film of claim 1 , wherein the first layer is a sealant layer that contacts liquid in the packaging.
3. The film of claim 2 , wherein the second and seventeenth layers further include an oxygen scavenger.
4. The film of claim 1 , wherein the fourth, sixth, thirteenth, and fifteenth layers include nylon.
5. The film of claim 3 , wherein the fifth and fourteenth layers have a mole percent ethylene content of 29%.
6. The film of claim 3 , wherein the fifth and fourteenth layers have a mole percent ethylene content of 27%.
7. The multilayer film of claim 1 , wherein the film is used to make a sealed pouch having an aperture to which is connected a spout, and the spout is connected to a fluid dispenser.
8. The multilayer film of claim 7 , wherein the pouch has a thickness in the range of 35 to 150 microns.
9. The multilayer film of claim 1 , wherein the film has an oxygen transfer rate of no more than 0.01 cc/100 in 2 /24 hours at 0% relative humidity.
10. The multilayer film of claim 1 , wherein the first, second, eighth, eleventh, seventeenth, and eighteenth layers comprise an LLDPE material.