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公开(公告)号：US10391696B2
公开(公告)日：2019-08-27
申请号：US14997157
申请日：2016-01-15
Applicant: Addex, Inc.
Inventor： Robert E. Cree , William J. Randolph
Abstract: The present invention relates to an external cooling system for a molten film tube produced by a blown film tubular extrusion process, comprised of a divergent cooling element with a divergent cooling interface containing a cooling gas deflector spaced adjacent to the molten film tube and providing an expelled cooling gas (i) in a path opposing the flow of the molten film tube toward a first exit gap and (ii) in a path with the flow of the molten film tube toward a second exit gap. A minimum gap between the divergent cooling interface and the molten film tube occurs at the first exit gap and/or the second exit gap. Advantageously, the divergent cooling interface is provided with one or more compound angles to maximize stability and cooling efficiency. Additionally, multiple cooling elements can preferably be arranged in a stackable configuration to achieve higher throughput rates. Operation is characterized by improved film holding forces without the presence of high noise levels or detrimental vibration, flutter, and drag. Additionally, employing simplified single air delivery channels, and a stackable design, significantly reduces complexity and manufacturing costs.
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公开(公告)号：US20170203489A1
公开(公告)日：2017-07-20
申请号：US14997127
申请日：2016-01-15
Applicant: Addex, Inc.
Inventor： Robert E. Cree , William J. Randolph
CPC classification number: B29C48/913 , B29C48/0018 , B29C48/10 , B29C48/9125 , B29C48/92 , B29C55/28 , B29C2035/1658 , B29C2035/1666 , B29C2948/92514 , B29L2023/001 , B29L2031/7129
Abstract: The present invention relates to an external cooling system for a molten film tube produced by a blown film tubular extrusion process, comprised of one or more enclosures with one or more respective cavities that directly receive a portion of cooling gas emanating from one or more associated cooling elements. Each enclosure includes a port containing a variable exhaust device and optional flow buffer, acting to maintain a pressure differential between the cavity and an adjacent inside volume of the molten film tube, adjustable to optimize molten film tube stability cooling element efficiency and spaced apart dimension between cooling elements. Significant increases in production speeds are achieved with improved film quality over an increased range of tubular film sizes, down to a minimum size which occurs when operating at zero internal to molten film tube pressure.
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公开(公告)号：US20170203474A1
公开(公告)日：2017-07-20
申请号：US15348640
申请日：2016-11-10
Applicant: Addex, Inc.
Inventor： Robert E. Cree , William J. Randolph
CPC classification number: B29C48/9125 , B29C48/0018 , B29C48/10 , B29C48/913 , B29C55/28 , B29C2035/1658 , B29C2035/1666 , B29K2101/12 , B29L2023/001
Abstract: The present invention relates to an external cooling system for a molten film tube produced by a blown film tubular extrusion process, comprised of one or more enclosures with one or more respective cavities that directly receive a portion of cooling gas emanating from one or more associated cooling elements. Each enclosure includes a port containing a variable exhaust device and optional flow buffer, acting to maintain a pressure differential between the cavity and an adjacent inside volume of the molten film tube, adjustable to optimize molten film tube stability cooling element efficiency and spaced apart dimension between cooling elements. Additionally, at least one cooling element is provided, comprised of a divergent cooling element with a divergent cooling interface containing a cooling gas deflector spaced adjacent to the molten film tube and providing an expelled cooling gas.
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公开(公告)号：US20170203472A1
公开(公告)日：2017-07-20
申请号：US14997082
申请日：2016-01-15
Applicant: Addex, Inc.
Inventor： Robert E. Cree , William J. Randolph
CPC classification number: B29C48/913 , B29C48/10 , B29C48/9125 , B29C2035/1658 , B29K2101/12 , B29L2023/001
Abstract: The present invention relates to an external cooling system for a molten film tube produced by a blown film tubular extrusion process, comprised of one or more enclosures with one or more respective cavities that directly receive a portion of cooling gas emanating from one or more associated cooling elements. Each enclosure includes a port containing a variable exhaust device and optional flow buffer, acting to maintain a pressure differential between the cavity and an adjacent inside volume of the molten film tube, adjustable to optimize molten film tube stability cooling element efficiency and spaced apart dimension between cooling elements. Additionally, at least one cooling element is provided, comprised of a divergent cooling element with a divergent cooling interface containing a cooling gas deflector spaced adjacent to the molten film tube and providing an expelled cooling gas.
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公开(公告)号：US20240173910A1
公开(公告)日：2024-05-30
申请号：US18433676
申请日：2024-02-06
Applicant: Addex, Inc.
Inventor： Robert E. Cree , William J. Randolph
CPC classification number: B29C49/0015 , B29C48/10 , B29C48/913 , B29C48/0018 , B29C48/92 , B29C2948/926 , B29K2101/12 , B29L2023/001
Abstract: The present invention relates to an external cooling system for a molten film tube produced by a blown film tubular extrusion process. Embodiments of the present disclosure provide a unidirectional cooling element having a unidirectional cooling interface containing a cooling gas deflector spaced adjacent to the molten film tube. The unidirectional cooling element operably expels cooling gas in a path with the flow of the molten film tube toward an exit gap formed between the unidirectional cooling interface and the molten film tube. The minimum gap between the unidirectional cooling interface and the molten film tube occurs at the exit gap, and advantageously, the unidirectional cooling interface is provided with one or more compound angles to maximize stability and cooling efficiency.
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Patent Agency Ranking
公开(公告)号：US11938668B2
公开(公告)日：2024-03-26
申请号：US17536236
申请日：2021-11-29
Applicant: Addex, Inc.
Inventor： Robert E. Cree , William J. Randolph
CPC classification number: B29C49/0015 , B29C48/10 , B29C48/913 , B29C48/0018 , B29C48/92 , B29C2948/926 , B29K2101/12 , B29L2023/001
Abstract: The present invention relates to an external cooling system for a molten film tube produced by a blown film tubular extrusion process. Embodiments of the present disclosure provide a unidirectional cooling element having a unidirectional cooling interface containing a cooling gas deflector spaced adjacent to the molten film tube. The unidirectional cooling element operably expels cooling gas in a path with the flow of the molten film tube toward an exit gap formed between the unidirectional cooling interface and the molten film tube. The minimum gap between the unidirectional cooling interface and the molten film tube occurs at the exit gap, and advantageously, the unidirectional cooling interface is provided with one or more compound angles to maximize stability and cooling efficiency.
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公开(公告)号：US11919219B2
公开(公告)日：2024-03-05
申请号：US17568226
申请日：2022-01-04
Applicant: Addex, Inc.
Inventor： Robert E. Cree , William J. Randolph
CPC classification number: B29C48/913 , B29C48/0018 , B29C48/10 , B29C48/9125 , B29C55/28 , B29C2035/1658 , B29C2035/1666 , B29C48/92 , B29C2948/92514 , B29L2023/001 , B29L2031/7129
Abstract: The present invention relates to an external cooling system for a molten film tube produced by a blown film tubular extrusion process, comprised of one or more enclosures with one or more respective cavities that directly receive a portion of cooling gas emanating from one or more associated cooling elements. Each enclosure includes a port containing a variable exhaust device and optional flow buffer, acting to maintain a pressure differential between the cavity and an adjacent inside volume of the molten film tube, adjustable to optimize molten film tube stability cooling element efficiency and spaced apart dimension between cooling elements. Significant increases in production speeds are achieved with improved film quality over an increased range of tubular film sizes, down to a minimum size which occurs when operating at zero internal to molten film tube pressure.
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公开(公告)号：US20240066780A1
公开(公告)日：2024-02-29
申请号：US18243377
申请日：2023-09-07
Applicant: Addex, Inc.
Inventor： Robert E. Cree , William J. Randolph
CPC classification number: B29C48/9125 , B29C48/10 , B29C48/913 , B29C48/0018 , B29C35/16 , B29C2035/1658 , B29C2035/1666 , B29K2101/12
Abstract: The present invention relates to an external cooling system for a molten film tube produced by a blown film tubular extrusion process, comprised of one or more enclosures with one or more respective cavities that directly receive a portion of cooling gas emanating from one or more associated cooling elements. Each enclosure includes a port containing a variable exhaust device and optional flow buffer, acting to maintain a pressure differential between the cavity and an adjacent inside volume of the molten film tube, adjustable to optimize molten film tube stability cooling element efficiency and spaced apart dimension between cooling elements. Additionally, at least one cooling element is provided, comprised of a divergent cooling element with a divergent cooling interface containing a cooling gas deflector spaced adjacent to the molten film tube and providing an expelled cooling gas.
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公开(公告)号：US20230158727A1
公开(公告)日：2023-05-25
申请号：US17895150
申请日：2022-08-25
Applicant: Addex, Inc.
Inventor： Robert E. Cree , William J. Randolph
CPC classification number: B29C48/9135 , B29C55/28 , B29C48/0018
Abstract: The present invention relates to a method and apparatus for cooling. An exemplary apparatus includes an annular cooling ring operable for receiving a flow of a molten film bubble and expelling a flow of cooling gas, the annular cooling ring comprising a middle lip and an adjacent radially spaced apart outer lip, the middle lip having an extended length longer than the outer lip, a radially inner surface of the outer lip and a radially outer surface of the middle lip define a channel operable to allow the flow of cooling gas along the radially outer surface of the middle lip, wherein the middle lip is located radially intermediate the channel and the molten film bubble, and wherein the middle lip isolates the molten film bubble from the flow of cooling gas until the flow of cooling gas passes beyond the extended length of the middle lip.
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公开(公告)号：US11292176B2
公开(公告)日：2022-04-05
申请号：US15406139
申请日：2017-01-13
Applicant: Addex, Inc.
Inventor： Robert E. Cree , William J. Randolph
Abstract: The present invention relates to an external cooling system for a molten film tube produced by a blown film tubular extrusion process, comprised of one or more enclosures with one or more respective cavities that directly receive a portion of cooling gas emanating from one or more associated cooling elements. Each enclosure includes a port containing a variable exhaust device and optional flow buffer, acting to maintain a pressure differential between the cavity and an adjacent inside volume of the molten film tube, adjustable to optimize molten film tube stability cooling element efficiency and spaced apart dimension between cooling elements. Additionally, at least one cooling element is provided, comprised of a divergent cooling element with a divergent cooling interface containing a cooling gas deflector spaced adjacent to the molten film tube and providing an expelled cooling gas.
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