Polymeric material for an insulated container

摘要

A formulation includes a polymeric material, a nucleating agent, a blowing, and a surface active agent. The formulation can be used to form a container.

主权项

1. A container comprising:
a sleeve-shaped sidewall having an outer tab overlapping an inner tab, the sidewall comprising an insulative cellular non-aromatic polymeric material; and a floor joined to at least a portion of the sidewall, the sidewall and the floor defining an interior region having an open end, and the sidewall having a length extending from the floor to the open end; the insulative cellular non-aromatic polymeric material including:
a first polymer material comprising high melt strength polypropylene having long chain branching, anda second polymer material comprising at least one of polypropylene and polyethylene, the insulative cellular non-aromatic polymeric material having a thermal conductivity to density ratio of about 0.3, wherein thermal conductivity is expressed in W/m−K at about 21° C. and density is expressed in g/cm3; and the sleeve-shaped sidewall of the container having a rigidity to density ratio of about 1.5 to about 2.6 for a sidewall thickness of about 0.064 inches to about 0.0744 inches when the container is filled with a liquid of about 93.3° C., wherein density is expressed in g/cm3 and rigidity is expressed in kg-force as measured about one-third of the length of the sleeve-shaped sidewall from the open end over a travel distance of about 0.25 inches over a travel time of about 10 seconds.