Amit S Agrawal

US Patent:

6395865, May 28, 2002

Filed:

Feb 23, 2001

Appl. No.:

09/791361

Inventors:

Steven L. Schmidt - Bedford NH
Brian Lynch - Merrimack NH
Amit S. Agrawal - Merrimack NH

Assignee:

Continental Pet Technologies INC - Toledo OH

International Classification:

C08G 6302

US Classification:

528272, 528271

Abstract:

Process for controlling the change of intrinsic viscosity and transesterification during solid stating of a polyethylene terephthalate (PET) and polyethylene naphthalate (PEN) blend, with an effective amount of an ethylene glycol compound. The process enables the production of a copolymer based on predefined initial and final IVs and final transesterification level, by varying the solid-stating time and/or effective amount of ethylene glycol. In one embodiment, a relatively greater amount of post-consumer PET (e. g. , 70%) having an IV of on the order of 0. 72-0. 73, is incorporated in the blend to provide a final IV on the order of 0. 80-0. 85, and a moderate, controlled level of transesterification; the blend is used to injection mold a sleeve layer of a preform. In another embodiment, a substantially transparent neck finish for a preform is made from a PEN/PET blend having an amount of ethylene glycol which enables substantial transesterification, without excessive increase in IV.

US Patent:

6586558, Jul 1, 2003

Filed:

May 24, 2002

Appl. No.:

10/155652

Inventors:

Steven L. Schmidt - Bedford NH
Brian Lynch - Merrimack NH
Amit S. Agrawal - Merrimack NH

Assignee:

Continental PET Technologies, Inc. - Florence KY

International Classification:

C08G 6300

US Classification:

528271, 528272, 2641761

Abstract:

Process for controlling the change of intrinsic viscosity and transesterification during solid stating of a polyethylene terephthalate (PET) and polyethylene naphthalate (PEN) blend, with an effective amount of an ethylene glycol compound. The process enables the production of a copolymer based on predefined initial and final IVs and final transesterification level, by varying the solid-stating time and/or effective amount of ethylene glycol. In one embodiment, a relatively greater amount of post-consumer PET (e. g. , 70%) having an IV of on the order of 0. 72-0. 73, is incorporated in the blend to provide a final IV on the order of 0. 80-0. 85, and a moderate, controlled level of transesterification; the blend is used to injection mold a sleeve layer of a preform. In another embodiment, a substantially transparent neck finish for a preform is made from a PEN/PET blend having an amount of ethylene glycol which enables substantial transesterification, without excessive increase in IV.

US Patent:

7600655, Oct 13, 2009

Filed:

May 10, 2006

Appl. No.:

11/431462

Inventors:

Amit S. Agrawal - Merrimack NH, US
David P. Piccioli - Auburn NH, US
Stephen R. Guerin - Milford NH, US

Assignee:

Graham Packaging Company, LLP - York PA

International Classification:

B65D 25/10
B65D 53/00
B65D 81/24

US Classification:

220759, 220770, 215396

Abstract:

Disclosed herein is a container and handle assembly comprising a container having at least one anchor having a portion embedded in a body of the container. The anchor has an unembedded portion with an attachment site. The assembly further comprises a handle formed separately from the container, where the handle has a mating attachment site for engaging the attachment site of the unembedded portion of the anchor. Also disclosed are methods of forming a container having at least one anchor partially embedded therein.

US Patent:

8097662, Jan 17, 2012

Filed:

Jan 30, 2008

Appl. No.:

12/022319

Inventors:

Steven L. Schmidt - Bedford NH, US
Brian Lynch - Merrimack NH, US
Keith Barker - Candia NH, US
Amit S. Agrawal - Merrimack NH, US

Assignee:

Graham Packaging PET Technologies, Inc. - York PA

International Classification:

B32B 27/34
C08K 3/10

US Classification:

523100, 524435, 524606, 428 357, 428 366

Abstract:

Oxygen-scavenging polymers and packaging for holding oxygen-sensitive products. A heat treatment process has been found to significantly increase the oxygen-scavenging performance of the polymer. The enhanced scavenging polymer can be effectively incorporated into various packaging, including transparent multilayer containers for beer and juice. In one embodiment, a multilayer package made from the scavenger provides an actual reduction in oxygen content of a contents of the package, over a long period of time (e. g. , 24 weeks). The package can be stored unfilled for an extended period (without significant loss of scavenging capability) and will scavenge substantially immediately upon filling with a liquid product. The package may incorporate a relatively low weight percentage of the scavenger, thus providing enhanced scavenging in a cost-effective manner.

US Patent:

8309622, Nov 13, 2012

Filed:

Jan 12, 2012

Appl. No.:

13/349069

Inventors:

Steven L. Schmidt - Bedford NH, US
Brian Lynch - Merrimack NH, US
Keith Barker - Candia NH, US
Amit S. Agrawal - Merrimack NH, US

Assignee:

Graham Packaging PET Technologies Inc. - York PA

International Classification:

B32B 27/34
C08K 3/10

US Classification:

523100, 524435, 524606, 428 357, 428 366

Abstract:

Oxygen-scavenging polymers and packaging for holding oxygen-sensitive products. A heat treatment process has been found to significantly increase the oxygen-scavenging performance of the polymer. The enhanced scavenging polymer can be effectively incorporated into various packaging, including transparent multilayer containers for beer and juice. In one embodiment, a multilayer package made from the scavenger provides an actual reduction in oxygen content of a contents of the package, over a long period of time (e. g. , 24 weeks). The package can be stored unfilled for an extended period (without significant loss of scavenging capability) and will scavenge substantially immediately upon filling with a liquid product. The package may incorporate a relatively low weight percentage of the scavenger, thus providing enhanced scavenging in a cost-effective manner.

US Patent:

8512783, Aug 20, 2013

Filed:

Apr 5, 2007

Appl. No.:

11/697218

Inventors:

David Piccioli - Auburn NH, US
Amit Agrawal - Merrimack NH, US
Ralph Armstrong - Weston CT, US

Assignee:

Graham Packaging Company LP - York PA

International Classification:

B65D 90/02

US Classification:

426407, 426232, 426397, 426521

Abstract:

Containers for pressurized filling and pasteurization and methods of reducing creep in a pressurized pasteurizable container. The container is a blow-molded plastic container having a biaxially oriented wall of a structural polymer with a moisture content of no greater than a predetermined value at the start of a pressurized filling, capping, and pasteurization process. Also disclosed are pasteurizable containers having a desired shelf life.

US Patent:

20020022099, Feb 21, 2002

Filed:

Apr 2, 2001

Appl. No.:

09/824302

Inventors:

Steven Schmidt - Bedford NH, US
Brian Lynch - Merrimack NH, US
Keith Barker - Candia NH, US
Ronald Adams - Goffstown NH, US
Amit Agrawal - Merrimack NH, US

International Classification:

B32B001/02

US Classification:

428/035700

Abstract:

Oxygen-scavenging polymers and packaging for holding oxygen-sensitive products. A heat treatment process has been found to significantly increase the oxygen-scavenging performance of the polymer. The enhanced scavenging polymer can be effectively incorporated into various packaging, including transparent multilayer containers for beer and juice. In one embodiment, a multilayer package made from the scavenger provides an actual reduction in oxygen content of a contents of the package, over a long period of time (e.g., 24 weeks). The package can be stored unfilled for an extended period (without significant loss of scavenging capability) and will scavenge substantially immediately upon filling with a liquid product. The package may incorporate a relatively low weight percentage of the scavenger, thus providing enhanced scavenging in a cost-effective manner.

US Patent:

20020037377, Mar 28, 2002

Filed:

Dec 20, 2000

Appl. No.:

09/745010

Inventors:

Steven Schmidt - Bedford NH, US
Brian Lynch - Merrimack NH, US
Keith Barker - Candia NH, US
Ronald Adams - Goffstown NH, US
Amit Agrawal - Merrimack NH, US

International Classification:

B32B001/02

US Classification:

428/035800, 428/035300, 428/035700

Abstract:

Oxygen-scavenging polymers and packaging for holding oxygen-sensitive products. A heat treatment process has been found to significantly increase the oxygen-scavenging performance of the polymer. The enhanced scavenging polymer can be effectively incorporated into various packaging, including transparent multilayer containers for beer and juice. In one embodiment, a multilayer package made from the scavenger provides an actual reduction in oxygen content of a contents of the package, over a long period of time (e.g., 24 weeks). The package can be stored unfilled for an extended period (without significant loss of scavenging capability) and will scavenge substantially immediately upon filling with a liquid product. The package may incorporate a relatively low weight percentage of the scavenger, thus providing enhanced scavenging in a cost-effective manner.