American Can Company

American National Can Company

James A Wachtel

Boh C Tsai

Robert J McHenry

Christopher J Farrell

Charles E McChesney

Kenneth B Spencer

Donald C Vosti

Mark A Williams

Joseph B Brito

Robert J Reed

Wilson T Piatt, Jr

Krishnaraju Varadarajan

Ilie Mila Belivakici

Clifford Clayton Goehring

Krishnaraju Vavadarajan

William Joseph Lahm

Carl Richard Storms

Cheh-Jen Su

A method is provided for obtaining an acceptable configuration of a thermally processed container packed with food. Improvement in container configuration is attained by proper container design, by maintaining proper headspace of gases in the container during thermal processing, proper pressure outside the container during the cooking cycle and cooling cycle of the process and/or by controlled reforming of the bottom wall of the container. Further improvements are attained by controlling the thermal history of the empty container, such as by pre-shrinking the container before it is filled with food and sealed.

Method of obtaining acceptable configuration of a plastic container

A polymeric structure having an oxygen barrier layer (e.g., ethylene-vinyl alcohol copolymer) is heated in the presence of moisture to improve its resistance to oxygen and moisture penetration. A drying agent is incorporated in the multi-layer structure to control the rate of water penetration to, and the amount of water in, the barrier layer.

Polymeric structure having improved barrier properties and method of

A method is provided for obtaining an acceptable configuration of a thermally processed plastic container packed with food. Improvement in container configuration is attained by proper container design and by maintaining proper headspace of gases in the container during thermal processing and/or by controlled reforming of the bottom wall of the container. Further improvements are attained by controlling the thermal history of the empty container, such as by pre-shrinking the container before it is filled with food and sealed.

Off-flavor development is alleviated, or substantially minimized, in thermally processed comestibles packed in plastic containers. The container wall which is in contact with the comestibles is made of a polymer (e.g., polyethylene) containing low vinyl group concentration and low carbonyl group content after melt processing.

Plastic containers for use in packaging and thermal processing of

In a multi-layer polymeric structure having an interior oxygen barrier layer of a moisture sensitive polymeric material such as ethylene-vinyl alcohol, drying agents are incorporated in the structure, particularly in a layer or layers proximate to the barrier layer, to limit the moisture content of the barrier layer to maintain barrier properties.

Drying agent in multi-layer polymeric structure

A molecularly oriented article having a tubular sidewall is blow-molded from a thermoplastic parison which is heat-treated prior to blowing to provide the parison sidewall with a temperature gradient wherein the temperature of the inside of the sidewall is greater than that of the outside, both of said temperatures being within the orientation temperature range of the thermoplastic. The temperature gradient results in the sidewall of the article having a different and more uniform circumferential orientation release stress distribution radially across the sidewall than would be obtained if the parison were blown isothermally.

Method for making a blow molded oriented plastic bottle

A thermoplastic bottle has a unique combination of properties. The bottle is characterized by a very high level of molecular orientation, and possesses the properties of high impact strength, low gas permeability and excellent resistance to creep strain under tensile load. A blowing process for fabricating the bottle is also taught which features a means of substantially improving the resistance to creep strain.

Blown thermoplastic bottle and method for making same

A thermoplastic bottle having a unique combination of properties. The bottle is characterized by a very high level of molecular orientation, and possesses the properties of high impact strength, low gas permeability and excellent resistance to creep strain under tensile load. A blowing process for fabricating the bottle is also taught which features a means for substantially improving the resistance to creep strain.

A molecularly oriented article having a tubular sidewall is blow-molded from a thermoplastic parison which is heat-treated prior to blowing to provide the parison sidewall with a temperature gradient wherein the temperature of the inside of the sidewall is greater than that of the outside, both of said temperature being within the orientation temperature range of the thermoplastic. The temperature gradient results in the sidewall of the article having a different and more uniform circumferential orientation release stress distribution radially across the sidewall than would be obtained if the parison were blown isothermally.

Blow molded, oriented plastic bottle and method for making same

Cups having a sidewall made from foam sheet plastic with a fusion sealed, lapped seam, wherein the lapped seam and the sidewall immediately adjacent the lapped seam are of identical thickness, are provided with additional rigidity per unit wall thickness by compressing the foam sheet either in-line with the foam extrusion operation or up to several months after extrusion. The cup is characterized by a substantial skin on only the outer surface of the sidewall.

Growing community of inventors

Buffalo Grove, IL, United States of America

James A Wachtel