Patents by Inventor George F. Rollend
George F. Rollend has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Patent number: 11186713Abstract: Three independent approaches to the reduction of gas molecule permeability through a polyethylene terephthalate (PET) polyester film or container wall by increasing the mechanically or thermally induced crystallinity or the overall crystallinity level of a single or multilayer container, where the three approaches may be employed independently or in combination with one another.Type: GrantFiled: April 11, 2017Date of Patent: November 30, 2021Assignee: DAK AMERICAS LLCInventors: Rajat Kapoor, Peter S. Kezios, George F. Rollend
-
Patent number: 10844168Abstract: A method for producing ultra-high intrinsic viscosity (IV) polyester resin pellets from a resin that contains one or more comonomers in an amount of up to 30 mol%. The method includes extruding a polyethylene terephthalate polyester starting material having a starting IV (IVst) meeting the following relationship: 0.65 dL/g <IVst <0.9 dL/g, to form resin particles having no more than 0.05 dL/g of IV lift due to solid-state polymerization, then latent heat crystallizing the resin particles to form crystallized particles having a variation of IV of no more than 0.05 dL/g across any dimension of the crystallized particles. The crystallized particles are then solid state polymerized to a final IV (IVf) of at least 0.9 dL/g to form the ultra-high intrinsic viscosity (IV) polyester resin pellets. During the solid state polymerizing the IV lift rate is at least 0.012 dL/g/hr.Type: GrantFiled: March 23, 2018Date of Patent: November 24, 2020Assignee: DAK AMERICAS LLCInventors: Helen J. Codd, George F. Rollend, Norman W. Lisson
-
Patent number: 10703024Abstract: A method for improving the impact resistance of an extrusion blow molded article by extrusion blow molding an ultra-high IV polymer resin having an IV of at least 0.9 dL/g, wherein the extrusion blow molding is carried out in a mold with a texturized base surface such that a base surface of the extrusion blow molded article is textured.Type: GrantFiled: April 13, 2015Date of Patent: July 7, 2020Assignee: DAK AMERICAS LLCInventor: George F. Rollend
-
Publication number: 20190112471Abstract: Three independent approaches to the reduction of gas molecule permeability through a polyethylene terephthalate (PET) polyester film or container wall by increasing the mechanically or thermally induced crystallinity or the overall crystallinity level of a single or multilayer container, where the three approaches may be employed independently or in combination with one another.Type: ApplicationFiled: April 11, 2017Publication date: April 18, 2019Applicant: DAK AMERICAS LLCInventors: Rajat KAPOOR, Peter S. KEZIOS, George F. ROLLEND
-
Publication number: 20180208715Abstract: An ultra-high IV polyester suitable for high melt strength end-uses, such as injection blow molding, pipe extrusion, profile extrusion, and extrusion blow molding, is provided, having IV of greater than 0.9; and a process for its production having high IV lift rate during SSP processing.Type: ApplicationFiled: March 23, 2018Publication date: July 26, 2018Applicant: DAK AMERICAS LLCInventors: Helen J. CODD, George F. ROLLEND, Norman W. LISSON
-
Publication number: 20180141244Abstract: A method for improving the impact resistance of an extrusion blow molded article by extrusion blow molding an ultra-high IV polymer resin having an IV of at least 0.9 dL/g, wherein the extrusion blow molding is carried out in a mold with a texturized base surface such that a base surface of the extrusion blow molded article is textured.Type: ApplicationFiled: April 13, 2015Publication date: May 24, 2018Applicant: DAK AMERICAS LLCInventor: George F. ROLLEND
-
Patent number: 9399700Abstract: An ultra-high IV polyester suitable for high melt strength end-uses, such as injection blow molding, pipe extrusion, profile extrusion, and extrusion blow molding, is provided, having IV of greater than 0.9; and a process for its production having high IV lift rate during SSP processing.Type: GrantFiled: February 6, 2013Date of Patent: July 26, 2016Assignee: DAK AMERICAS LLC.Inventors: Helen J. Codd, George F. Rollend, Norman W. Lisson
-
Publication number: 20110256331Abstract: An ultra-high IV polyester suitable for high melt strength end-uses, such as injection blow molding, pipe extrusion, profile extrusion, and extrusion blow molding, is provided, having IV of greater than 0.9; and a process for its production having high IV lift rate during SSP processing.Type: ApplicationFiled: April 14, 2010Publication date: October 20, 2011Applicant: DAK AMERICAS LLCInventors: Helen J. CODD, George F. ROLLEND, Norman W. LISSON
-
Patent number: 6814920Abstract: A method of preventing delamination of multiple layers of an oriented polymer container having an opening defined by the multiple layers comprising a bi-axially oriented multilayer polymer container having an opening defined by a perimeter at which the multiple layers are exposed; heating the perimeter until workable; providing a curling die; feeding the multilayer perimeter into the curling die to curl the perimeter sufficiently to inhibit delamination of the layers and a container when so made.Type: GrantFiled: December 13, 2001Date of Patent: November 9, 2004Assignee: DTL Technology Limited PartnershipInventors: Martin H. Beck, George F. Rollend
-
Publication number: 20030113491Abstract: A method of preventing delamination of multiple layers of an oriented polymer container having an opening defined by the multiple layers comprising a bi-axially oriented multilayer polymer container having an opening defined by a perimeter at which the multiple layers are exposed; heating the perimeter until workable; providing a curling die; feeding the multilayer perimeter into the curling die to curl the perimeter sufficiently to inhibit delamination of the layers and a container when so made.Type: ApplicationFiled: December 13, 2001Publication date: June 19, 2003Inventors: Martin H. Beck, George F. Rollend
-
Patent number: 6382946Abstract: A multi-cavity coinjection mold and method for simultaneously producing a plurality of multi-layered articles comprising: a mold structure defining a plurality of mold cavities; a first supply source for supplying metered amounts of a first molding material; a second supply source for supplying metered amounts of a second molding material; a hot runner system in communication with the first and second supply sources for conveying the metered amounts of the first and the second materials separately to a region proximate each of the cavities; the region comprising having a pin controlled passage leading to proximate cavity by way of a gate having the same cross-section as the passage, the pin scavenging material from the passage and providing cavity packing.Type: GrantFiled: April 1, 1998Date of Patent: May 7, 2002Assignee: DTL Technology Limited PartnershipInventors: Martin H. Beck, George F. Rollend, John H. Muszynski
-
Patent number: 6237791Abstract: A method of forming a wide mouth blow molded thermoplastic container comprising the steps of i) stretch blow molding from a preform, an intermediate article defining the container with the mouth being threaded and/or flanged, the mouth terminating in an accommodation element having a neck finish that supports the preform in the blow mold; ii) heat setting the intermediate article including the entire container while still in the mold, and iii) removing the intermediate article of manufacture from the mold and severing the accommodation element to produce the container, and an article when made by the method. The method also includes post forming of a rim portion of the container following separation of the container from the accommodation element.Type: GrantFiled: July 14, 1999Date of Patent: May 29, 2001Assignee: DTL Technology Limited PartnershipInventors: Martin H. Beck, George F. Rollend, Robert J. Caldicott
-
Patent number: 6235229Abstract: A multi-cavity coinjection mold having a relatively large plurality of cavities for simultaneously molding a relatively large plurality of multi-layered articles including a) a plurality of cavity groups each defining a relatively small plurality of said cavities, a single balanced hot runner for supplying said relatively small plurality of cavities with contiguous different plastics materials, and a valve for sequentially supplying desired contiguous quantities of the plastics materials from plastics material sources, common to all of said groups, to the balanced hot runner; and b) a hot runner manifold system connected to the plastic material sources to supply the plastic materials to all of the valves; and related methods.Type: GrantFiled: May 5, 1999Date of Patent: May 22, 2001Inventors: Martin H. Beck, George F. Rollend
-
Patent number: 6171538Abstract: A multi-cavity coinjection mold and method for simultaneously producing a plurality of multi-layered articles comprising: a mold structure defining a plurality of mold cavities; a first supply source for supplying metered amounts of a first molding material; a second supply source for supplying metered amounts of a second molding material; a hot runner system in communication with the first and second supply sources for conveying the metered amounts of the first and the second materials separately to a region proximate each of the cavities; a valve mechanism per cavity for receiving the metered amounts of the first and second materials from the hot runner system and for sequentially supplying desired quantity of the first and second materials contiguously to each cavity.Type: GrantFiled: April 29, 1999Date of Patent: January 9, 2001Assignee: DTL Technology Limited PartnershipInventors: Martin H. Beck, George F. Rollend
-
Patent number: 6129536Abstract: A multi-cavity coinjection mold having a relatively large plurality of cavities for simultaneously molding a relatively large plurality of multi-layered articles including a) a plurality of cavity groups each defining a relatively small plurality of said cavities, a single balanced hot runner for supplying said relatively small plurality of cavities with contiguous different plastics materials, and a valve for sequentially supplying desired contiguous quantities of the plastics materials from plastics material sources, common to all of said groups, to the balanced hot runner; and b) a hot runner manifold system connected to the plastic material sources to supply the plastic materials to all of the valves; and related methods.Type: GrantFiled: May 5, 1999Date of Patent: October 10, 2000Assignee: DTL Technology Limited PartnershipInventors: Martin H. Beck, George F. Rollend
-
Patent number: 6126886Abstract: A method of forming a wide mouth blow molded thermoplastic container comprising the steps of i) stretch blow molding from a preform, an intermediate article defining the container with the mouth being threaded and/or flanged, the mouth terminating in an accommodation element having a neck finish that supports the preform in the blow mold; ii) heat setting the intermediate article including the entire container while still in the mold, and iii) removing the intermediate article of manufacture from the mold and severing the accommodation element to produce the container, and an article when made by the method. The method also includes post forming of a rim portion of the container following separation of the container from the accommodation element.Type: GrantFiled: April 1, 1998Date of Patent: October 3, 2000Assignee: DTL Technology Limited PartnershipInventors: Martin H. Beck, George F. Rollend, Robert J. Caldicott
-
Patent number: 6062408Abstract: A method of forming a wide mouth blow molded thermoplastic container comprising the steps of i) stretch blow molding from a preform, an intermediate article defining the container with the mouth being threaded and/or flanged, the mouth terminating in an accommodation element having a neck finish that supports the preform in the blow mold; ii) heat setting the intermediate article including the entire container while still in the mold, and iii) removing the intermediate article of manufacture from the mold and severing the accommodation element to produce the container, and an article when made by the method.Type: GrantFiled: April 9, 1997Date of Patent: May 16, 2000Assignee: DTL Technology Limited PartnershipInventors: Martin H. Beck, George F. Rollend, Robert J. Caldicott
-
Patent number: 5971735Abstract: A multi-cavity coinjection mold having a relatively large plurality of cavities for simultaneously molding a relatively large plurality of multi-layered articles including a) a plurality of cavity groups each defining a relatively small plurality of said cavities, a single balanced hot runner for supplying said relatively small plurality of cavities with contiguous different plastics materials, and a valve for sequentially supplying desired contiguous quantities of the plastics materials from plastics material sources, common to all of said groups, to the balanced hot runner; and b) a hot runner manifold system connected to the plastic material sources to supply the plastic materials to all of the valves; and related methods.Type: GrantFiled: April 9, 1997Date of Patent: October 26, 1999Assignee: DTL Technology Limited PartnershipInventors: Martin H. Beck, George F. Rollend
-
Patent number: 5922363Abstract: A multi-cavity coinjection mold and method for simultaneously producing a plurality of multi-layered articles comprising: a mold structure defining a plurality of mold cavities; a first supply source for supplying metered amounts of a first molding material; a second supply source for supplying metered amounts of a second molding material; a hot runner system in communication with the first and second supply sources for conveying the metered amounts of the first and the second materials separately to a region proximate each of the cavities; a valve mechanism per cavity for receiving the metered amounts of the first and second materials from the hot runner system and for sequentially supplying desired quantity of the first and second materials contiguously to each cavity.Type: GrantFiled: April 7, 1997Date of Patent: July 13, 1999Assignee: DTL Technology Limited PartnershipInventors: Martin H. Beck, George F. Rollend
-
Patent number: D433946Type: GrantFiled: August 26, 1999Date of Patent: November 21, 2000Assignee: Plastipak Packaging, Inc.Inventors: George F. Rollend, Robert J. Caldicott, Dennis C. Conner