S.c. Johnson Home Storage, Inc.

Placon Corporation

Lewis Daniel Lee

Brian C Dais

Angela M Johnson

Peter Schroepfer

Donald E McCumber

Kristopher W Gerulski

Joseph Perushek

Nirav N Desai

A sheet for thermoforming is comprised of a material which is compatible with PET and which has slower crystallinity and a crystallization temperature which is at least 77&#xb0; C. greater than its glass transition temperature, more preferably a crystallization temperature greater than 151&#xb0; C. The material may be coextruded into a sheet with a first PET material, such that when thermoformed into a formed part the layers of second material are engaged with each other in the molded parts and for being subjected to heat sealing.

Thermoformable heat-sealable PET sheet material

A container comprises a first container portion and a second container portion joined to the first container portion to define a sealed cavity therebetween. A coolant is disposed within the sealed cavity. The container further comprises a pressure relief apparatus operable to limit pressure in the sealed cavity.

Cooling container having a coolant and pressure relief apparatus

A container comprises a sealed cavity defined by first and second walls of the container and a coolant disposed within the cavity wherein the coolant is capable of assuming first and second phases. A portion of the first wall is joined to the second wall wherein the portion includes an off-center opening. The portion is rupturable to limit pressure in the sealed cavity. The container further comprises a container rim and a lid having both an outer channel and a tab. The outer channel receives the container rim. The outer channel defines a first width. The tab has a second width substantially equal to the first width. When the coolant in the cavity is in the first phase there is a first interference fit of the channel with the container rim. When the coolant is in the second phase, there is a second interference fit, different than the first interference fit, between the container rim and the outer channel of the lid. A method of manufacture of such a container and lid is also disclosed.

Container with pressure relief and lid and method of manufacture therefor

Growing community of inventors

Evansville, WI, United States of America

Lewis Daniel Lee