POLYOLEFIN AND CELLULOSE LAMINATE FOR FOOD AND BEVERAGE CONTAINERS

摘要

A method and apparatus for in one implementation, a rigid paperboard container, the container being constructed from extrusion coated or laminated paperboard is provided. The rigid paperboard container comprises (a) a paperboard substrate having opposed inner and outer surfaces, (b) a first polymer layer coated or laminated onto the outer surface of the paperboard substrate, the first polymer layer comprising (i) metallocene catalyzed polyethylene polymer and (ii) optionally LDPE, (c) a second polymer layer coated or laminated over the first polymer layer, the second polymer layer comprising (i) metallocene catalyzed polyethylene polymer and (ii) LDPE and (d) a third polymer layer coated or laminated over the second polymer layer, the third polymer layer comprising (i) metallocene catalyzed polyethylene polymer and (ii) optionally low density polyethylene polymer (LDPE).

主权项

1. A rigid paperboard container, the container being constructed from extrusion coated or laminated paperboard comprising:
(a) a paperboard substrate having opposed inner and outer surfaces; (b) a first polymer layer coated or laminated onto the outer surface of the paperboard substrate, the first polymer layer comprising:
i) a metallocene catalyzed polyethylene polymer; andii) optionally low density polyethylene (LDPE); (c) a second polymer layer coated or laminated over the first polymer layer, the second polymer layer comprising:
i) the metallocene catalyzed polyethylene polymer; andii) the LDPE; and (d) a third polymer layer coated or laminated over the second polymer layer, the third polymer layer comprising:
i) the metallocene catalyzed polyethylene polymer; andii) optionally the LDPE.