초록 ▼

A collapsible container having a generally cylindrical configuration including at least an upper thicker section and a lower thicker section, and at least one thinner section positioned between the upper and lower thicker sections. When the container is collapsed, the upper and lower thicker section

A collapsible container having a generally cylindrical configuration including at least an upper thicker section and a lower thicker section, and at least one thinner section positioned between the upper and lower thicker sections. When the container is collapsed, the upper and lower thicker sections are telescoped within one another and the thinner section is folded therebetween. The container is made of a monolayer of a thermoplastic polymer having a flex modulus of from 60,000 to 160,000 psi and a heat distortion temperature at 66 psi of greater than 170 degrees F. A process for making the collapsible container using extrusion blow molding is also disclosed.

대표청구항 ▼

[ What is claimed is:] [1.] A collapsible, microwaveable container comprising an upper open end, a lower end closed by a bottom wall, and a peripheral side wall extending between the upper and lower ends, the peripheral side wall having a plurality of thicker sections, including at least an upper th

[ What is claimed is:] [1.] A collapsible, microwaveable container comprising an upper open end, a lower end closed by a bottom wall, and a peripheral side wall extending between the upper and lower ends, the peripheral side wall having a plurality of thicker sections, including at least an upper thicker section and a lower thicker section, the peripheral sidewall also having at least one thinner section positioned between the upper and lower thicker sections, the peripheral sidewall being adapted to move between an extended position and a collapsed position such that when the peripheral side wall is in the collapsed position, the upper and lower thicker sections of the peripheral sidewall are telescoped within one another and the thinner section is folded therebetween, the entirety of the peripheral side wall being constructed of a monolayer of the same thermoplastic polymer, said polymer being a co-polymer of polypropylene containing an ethylene co-monomer of between 2.1 and 3.2 weight percent, which has the same flex modulus, which is in the range of from 60,000 to 160,000 psi, and which has a heat distortion temperature at 66 psi of greater than 170 degrees F.