Patents by Inventor Achim Grefenstein
Achim Grefenstein 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).
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Publication number: 20230130087Abstract: The patent application relates to a paper-based packaging material with a carrier paper and a first coating arranged indirectly on at least one side of the carrier paper, wherein the first coating is a barrier layer and has an increased diffusion resistance to at least one substance selected from a group comprising fluid, gas, air, oxygen, carbon dioxide, nitrogen, inert gas, odorant, aromatic substance, water vapor, liquid, water, water-fat emulsion, fat, oil, mineral oil, and edible oil, odorant, flavorant, water vapor, liquid, water, water-fat emulsion, grease, oil, mineral oil, and edible oil individually or in combination, wherein the first coating is disposed between the carrier paper and a visually perceptible surface coating and directly contacts the surface coating. Furthermore, the invention relates to a package made of such a paper-based packaging material and a method of manufacturing the same.Type: ApplicationFiled: May 6, 2021Publication date: April 27, 2023Inventors: Achim Grefenstein, Markus Kick, Matthias Scheck, Thomas Kesmarszky
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Publication number: 20230114239Abstract: A recycling-friendly, easily producible paper packaging laminate with a high barrier against water vapor, oxygen and/or aromas, wherein a barrier film includes at least one substrate layer, a joining layer, and a barrier layer, wherein the joining layer is arranged between the substrate layer and the barrier layer, in that the substrate layer consists predominantly of polyethylene or polypropylene with a polyethylene content or a polypropylene content of at least 60 wt. % of the substrate layer, in that at least the at least one substrate layer of the barrier film is stretched, in that the content of the paper layer is between 50 wt. % and 90 wt. % of the paper packaging laminate, and in that the barrier film is joined to the paper layer by a hydrophilic adhesive layer, wherein the side of the paper layer facing the barrier film is uncoated.Type: ApplicationFiled: November 27, 2020Publication date: April 13, 2023Inventors: Achim Grefenstein, Dudley Jones, Stefan Büttner
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Patent number: 11235562Abstract: The present teaching concerns a recyclable co-extruded PE packaging film with a first laminate layer of at least 60 vol % HDPE and a second laminate layer of a hetero-phase polypropylene block copolymer with a polyethylene content of 5-30 wt. % and a melting point higher than 155° C., preferably higher than 160°, the thickness of the second laminate layer being less than 5 ?m.Type: GrantFiled: October 11, 2019Date of Patent: February 1, 2022Assignee: Constantia Pirk GmbH & Co. KGInventors: Achim Grefenstein, Pragnesh Shah, Saket Jha
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Publication number: 20210354894Abstract: A recyclable, easily tearable packaging laminate having a good barrier effect and low density, including a first laminate layer and a second laminate layer. The first laminate layer is a co-extruded, stretched composite consisting of a cavitated substrate layer having 5-30 wt. % cavitating agent and a PE proportion of at least 60 wt. %, a connecting layer and a barrier layer consisting of a barrier polymer, preferably polyamide or ethylene vinyl alcohol copolymer, with a thickness of at most 20% of the overall thickness of the first laminate layer. The connecting layer is arranged between the substrate layer and the barrier layer, and the first laminate layer is connected by its barrier layer to the second laminate layer.Type: ApplicationFiled: November 15, 2018Publication date: November 18, 2021Inventors: Thami Lamtigui, Achim Grefenstein
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Publication number: 20210252839Abstract: The present teaching concerns a recyclable co-extruded PE packaging film with a first laminate layer of at least 60 vol % HDPE and a second laminate layer of a hetero-phase polypropylene block copolymer with a polyethylene content of 5-30 wt. % and a melting point higher than 155° C., preferably higher than 160°, the thickness of the second laminate layer being less than 5 ?m.Type: ApplicationFiled: October 11, 2019Publication date: August 19, 2021Inventors: Achim Grefenstein, Pragnesh Shah, Saket Jha
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Publication number: 20210237949Abstract: The present teaching relates to a recyclable, easily tearable packaging laminate having a good barrier effect, including a first laminate layer and a second laminate layer. The first laminate layer is a co-extruded and bidirectionally stretched composite consisting of a substrate layer having an HDPE content of at least 60 vol. %, a connecting layer and a barrier layer consisting of a barrier polymer, preferably polyamide or ethylene vinyl alcohol copolymer, having a thickness of maximum 20% of the total thickness of the first laminate layer. The connecting layer is arranged between the substrate layer and the barrier layer, and the first laminate layer is connected, at its barrier layer, to the second laminate layer.Type: ApplicationFiled: August 23, 2018Publication date: August 5, 2021Inventors: Achim Grefenstein, Markus Kick, Thami Lamtigui
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Publication number: 20200391489Abstract: A recyclable packaging laminate with an externally arranged sealing layer having a polyethylene content of at least 80 vol %, with a substrate layer having a polyethylene content of at least 60 vol %, and with a thermal stabilization layer. The thermal stabilization layer is arranged externally opposite to the sealing layer, and the substrate layer is arranged between the sealing layer and the thermal stabilization layer, wherein the thermal stabilization layer is produced from ethylene-vinyl alcohol copolymer, and the thickness of the thermal stabilization layer constitutes up to 10% of the total thickness of the packaging laminate, but no more than 10 ?m.Type: ApplicationFiled: June 19, 2019Publication date: December 17, 2020Inventors: Thami Lamtigui, Achim Grefenstein
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Patent number: 10766236Abstract: In order to improve the sealing properties and the sliding properties of a sealing film, surface structures are provided on a first side of the sealing film, the greatest thickness of the sealing film being at least 10% greater than the smallest thickness of the sealing film and the greatest lateral extension of the surface structures being less than 500 ?m. A slip additive is added to the sealing film in a maximum quantity that results in an S-value of less than 10,000, preferably less than 5,000, in order to achieve a COF relative to steel of dynamically less than 0.3, preferably less than 0.27, and statically less than 0.35, preferably less than 0.3, with the side comprising the surface structures, irrespective of an addition of an antiblock additive to the sealing film.Type: GrantFiled: March 14, 2016Date of Patent: September 8, 2020Assignee: Constantia Pirk GmbH & Co. KGInventors: Achim Grefenstein, Werner Geitner, Ingo Geillersdörfer
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Patent number: 10751979Abstract: The present teaching describes a recyclable polyethylene film of at least 80% polyethylene material and max. 20% compatible polyolefin material. The polyethylene film is less than 40 ?m and has a central layer of linear low-density polyethylene (LLDPE) and/or metallocene linear low-density polyethylene (mLLDPE) and two outer layers made of high-density polyethylene (HDPE) and bonded to the central layer and surrounding a central layer. The HDPE content of the polyethylene film constitutes at least 60 vol %, preferably at least 70 vol %, especially preferably at least 80 vol. The two outer layers together are at least three times as thick as the central layer, preferably at least four times as thick. The polyethylene film is stretched in at least one direction.Type: GrantFiled: July 8, 2016Date of Patent: August 25, 2020Assignee: Constantia Pirk GmbH & Co. KGInventors: Achim Grefenstein, Stefan Büttner, Ingo Geillersdörfer
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Publication number: 20200122439Abstract: A recyclable, easily tearable packaging laminate having a good barrier effect, including a first laminate layer and a second laminate layer. The the first laminate layer is a co-extruded, in the machine direction stretched composite consisting of a substrate layer having a high HDPE content of at least 60% by volume, a bonding layer and a barrier layer consisting of a barrier polymer, preferably polyamide or ethylene vinyl alcohol copolymer, having a maximum thickness of 20% of the overall thickness of the first laminate layer. The bonding layer is arranged between the substrate layer and the barrier layer and the first laminate layer is connected on the barrier layer thereof to the second laminate layer.Type: ApplicationFiled: April 24, 2018Publication date: April 23, 2020Inventors: Achim Grefenstein, Markus Kick, Thami Lamtigui
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Patent number: 10611535Abstract: In order to improve the sealing properties and the sliding properties of a sealing film, it is provided that surface structures are provided on a first side of the sealing film, wherein the largest thickness of the sealing film is at least 10% greater than the smallest thickness of the sealing film, and the largest lateral extension of the surface structures is smaller than 500 ?m and a slip additive is added to the sealing film in an amount that yields an S-value of less than 10,000, and preferably less than 5,000.Type: GrantFiled: January 26, 2016Date of Patent: April 7, 2020Assignee: Constantia Pirk GmbH & Co. KGInventors: Achim Grefenstein, Werner Geitner, Ingo Geillersdörfer
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Publication number: 20190344551Abstract: The present teaching describes a recyclable polyethylene film of at least 80% polyethylene material and max. 20% compatible polyolefin material. The polyethylene film is less than 40 ?m and has a central layer of linear low-density polyethylene (LLDPE) and/or metallocene linear low-density polyethylene (mLLDPE) and two outer layers made of high-density polyethylene (HDPE) and bonded to the central layer and surrounding a central layer. The HDPE content of the polyethylene film constitutes at least 60 vol %, preferably at least 70 vol %, especially preferably at least 80 vol. The two outer layers together are at least three times as thick as the central layer, preferably at least four times as thick. The polyethylene film is stretched in at least one direction.Type: ApplicationFiled: July 8, 2016Publication date: November 14, 2019Applicant: Constantia Pirk GmbH & Co. KGInventors: Achim Grefenstein, Stefan Büttner, Ingo Geillersdörfer
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Publication number: 20190091981Abstract: In order to improve the sealing properties and the sliding properties of a sealing film, surface structures are provided on a first side of the sealing film, the greatest thickness of the sealing film being at least 10% greater than the smallest thickness of the sealing film and the greatest lateral extension of the surface structures being less than 500 ?m. A slip additive is added to the sealing film in a maximum quantity that results in an S-value of less than 10,000, preferably less than 5,000, in order to achieve a COF relative to steel of dynamically less than 0.3, preferably less than 0.27, and statically less than 0.35, preferably less than 0.3, with the side comprising the surface structures, irrespective of an addition of an antiblock additive to the sealing film.Type: ApplicationFiled: March 14, 2016Publication date: March 28, 2019Inventors: Achim Grefenstein, Werner Geitner, Ingo Geillersdörfer
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Publication number: 20180079188Abstract: A recyclable polyethylene film has at least 80% polyethylene material and max. 20% compatible polyolefin material. The polyethylene film has a central layer of linear low-density polyethylene (LLDPE) and/or metallocene linear low-density polyethylene (mLLDPE) and two outer layers made of high-density polyethylene (HDPE) and bonded to the central layer and surrounding a central layer. The HDPE content of the polyethylene film constitutes at least 50 vol %, preferably at least 80 vol %, and the two outer layers together are at least as thick as the central layer. The polyethylene film is stretched in at least one direction.Type: ApplicationFiled: March 29, 2016Publication date: March 22, 2018Inventors: Achim Grefenstein, Stefan Büttner, Ingo Geillersdörfer
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Publication number: 20180016071Abstract: In order to improve the sealing properties and the sliding properties of a sealing film, it is provided that surface structures are provided on a first side of the sealing film, wherein the largest thickness of the sealing film is at least 10% greater than the smallest thickness of the sealing film, and the largest lateral extension of the surface structures is smaller than 500 ?m and a slip additive is added to the sealing film in an amount that yields an S-value of less than 10,000, and preferably less than 5,000.Type: ApplicationFiled: January 26, 2016Publication date: January 18, 2018Inventors: Achim Grefenstein, Werner Geitner, Ingo Geillersdörfer
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Patent number: 9238315Abstract: The present invention relates to a film and a method for the production thereof, wherein a starting film web comprising at least one layer having a polypropylene content of at least 45% by weight and a polyethylene content in the same layer or in a further layer is produced, the starting film web is heated to the molten state of the polyethylene, yet to below the molten state of the polypropylene and the heated starting film web is passed through a cooled roller nip.Type: GrantFiled: January 28, 2011Date of Patent: January 19, 2016Assignee: RKW SEInventors: Achim Grefenstein, Florian Brandmaier, Leonhard Maier
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Publication number: 20120321866Abstract: The present invention relates to a film and a method for the production thereof, wherein a starting film web comprising at least one layer having a polypropylene content of at least 45% by weight and a polyethylene content in the same layer or in a further layer is produced, the starting film web is heated to the molten state of the polyethylene, yet to below the molten state of the polypropylene and the heated starting film web is passed through a cooled roller nip.Type: ApplicationFiled: January 28, 2011Publication date: December 20, 2012Inventors: Achim Grefenstein, Florian Brandmaier, Leonhard Maier
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Publication number: 20100260989Abstract: The invention relates multilayer films with ink-printable skin layer(s) bonded to the base or core layer without intermediate layers, whereby the core layer or base layer comprises at least 50% of at least one of a polypropylene homopolymer, a polypropylene random copolymer or a heterophasic polypropylene copolymer and the stiff and die cuttable skin layer(s) whereby the film has a thickness of up to 80 ?m, a tensile modulus according to DIN EN ISO 527-3 of from 600 to 1500 Mpa, and the impact energy according to DIN 53373 is not more than 3 Nm/mm film thickness and the maximum deflection according to DIN 53373 is not more than 5 mm. The films are useful for label applications.Type: ApplicationFiled: July 16, 2007Publication date: October 14, 2010Inventors: Achim Grefenstein, Marita Herranen, Tapio Mäkitalo
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Patent number: 7479322Abstract: A radiation-curable composite layered sheet or film comprising at least one substrate layer and one outer layer, said outer layer being composed of a radiation-curable composition having a glass transition temperature of more than 40° C.Type: GrantFiled: March 26, 2007Date of Patent: January 20, 2009Assignees: BASF Aktiengesellschaft, DaimlerChrysler AGInventors: Rainer Koeniger, Erich Beck, Achim Grefenstein, Reinhold Schwalm, Margit Veeh, Claudia Vogel, Walter Aichholzer, Thomas Gruber, Karl Holdik
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Publication number: 20080230938Abstract: The invention relates to moldings, comprising a composite layered sheet or composite layered film, reverse-coated with a backing layer of plastic applied by an injection-molding, foaming, casting, or compression-molding method, where the composite layered sheet or composite layered film comprises (1) a substrate layer comprising, based on the total of the amounts of components A and B, and, if appropriate, C and/or D, which give 100% by weight in total, a from 1 to 99% by weight of an elastomeric graft copolymer as component A, b from 1 to 99% by weight of one or more hard copolymers containing units which derive from vinylaromatic monomers, as component B, c from 0 to 80% by weight of polycarbonates, as component C, and d from 0 to 50% by weight of fibrous or particulate fillers, or a mixture of these, as component D, and (3) a top layer composed of aliphatic thermoplastic polyurethane.Type: ApplicationFiled: January 27, 2005Publication date: September 25, 2008Applicant: BASF AktiengesellschaftInventors: Achim Grefenstein, Steffen Funkhauser, Herbert Fisch, Norbert Effen