Multi-layer container

Application Number: 00108608
Application Date: 2000.04.06
Publication Number: 1273205
Publication Date: 2000.11.15
Priority Information: 1999/4/7 US 09/287934
International: B65D51/16;B65D65/38;B65D77/06
Applicant(s) Name: Owens-Brockway Plastic Product Corp.
Inventor(s) Name: J. W. Safean;J. E. Alsafsky
Patent Agency Code: 72001
Patent Agent: zhang shegao
Abstract A multilayer container (10) for dispensing product that includes a relatively rigid outer body (12) and a relatively flexible inner liner (14) for holding product to be dispensed. The relatively rigid outer body includes, and preferably consists essentially of, an outer layer (22) of virgin polyethylene such as HDPE, and an inner thicker layer (24) that includes polyethylene regrind. The relatively flexible inner liner includes, and preferably consists essentially of, an outer delamination layer (26) adjacent to the inner layer of the body and composed of nylon, nylon blends or EVOH, an inner layer (28) of polyethylene such as LLDPE, and an adhesive securing the inner and outer layers of the liner. The relatively thin outer HDPE layer on the plastic body provides desired appearance, while the thicker inner layer provides structural rigidity using reground plastics. The nylon, nylon blend or EVOH outer liner layer provides improved barrier properties against migration of water, gases and flavorants, while the inner layer of LLDPE provides primarily enhanced flexibility and freedom from cracking, as well as additional barrier moisture qualities.