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公开(公告)号：US4498956A
公开(公告)日：1985-02-12
申请号：US540566
申请日：1983-10-11
申请人： James O. Cheshire , Douglas L. Lindgren , Robert J. Marinack , Bruce W. Janda , Robert S. Thut , John T. Larkey , Ray E. Jostad
发明人： James O. Cheshire , Douglas L. Lindgren , Robert J. Marinack , Bruce W. Janda , Robert S. Thut , John T. Larkey , Ray E. Jostad
CPC分类号： D21F9/003 , D21F11/002
摘要： Apparatus and method for the manufacture of a non-woven fibrous web such as paper from a dispersion of fibers in a foamed liquid. In a preferred embodiment, a solution of surfactant in water is initially discharged from a headbox into the nip of a twin forming wire prior to its passage over a curvilinear path defined by a forming roll. The water-surfactant solution is caused repeatedly to pass through the outer one of the twin forming wires until there is created, and stored in a silo, a foamed liquid containing about 65% air in the form of bubbles of from about 20 to about 200 microns in diameter. The foamed liquid is directed from the silo into a mix tank wherein a slurry containing fibers at 20% to 55% solids is added and mixed. The mixture is pumped to the headbox and into the nip of the forming wires. The outer wire retains the fibers while passing and again foaming the liquid for return to the silo and the mix tank for addition of fibers and return to the headbox. The process is continued in formation of a fibrous web.In an alternative embodiment, the curvilinear path is defined by an arcuate surface that is fluid pervious so that the solution to be foamed may pass through both the inner and outer wires.A further alternative embodiment utilizes a single forming wire for receiving the solution prior to passage over a suction breast roll which receives the solution then centrifuges it outwardly in formation of foamed liquid.
摘要翻译： 用于从发泡液体中的纤维分散体制造非织造纤维网如纸的设备和方法。 在一个优选的实施方案中，表面活性剂在水中的溶液最初在从成型辊通过由成形辊限定的曲线路径之前从流浆箱排出到双成形丝的辊隙中。 反复引起水表面活性剂溶液通过双成型丝线的外部，直到产生并存储在筒仓内，包含约20至约200个气泡形式的约65％空气的泡沫液体 直径微米。 泡沫液体从筒仓引导到混合罐中，其中加入含有20％至55％固体的纤维的浆料并混合。 将混合物泵送到流浆箱并进入成形丝的辊隙中。 外线保持纤维，同时通过并再次发泡液体以返回料仓和混合罐以加入纤维并返回流浆箱。 纤维网的形成继续进行。 在替代实施例中，曲线路径由可渗透流体的弓形表面限定，使得待发泡的溶液可以穿过内部和外部线。 另一个替代实施例使用单个成形线在通过吸收乳房辊之前接收溶液，接收溶液然后将其离心离心以形成发泡液体。
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公开(公告)号：US4443299A
公开(公告)日：1984-04-17
申请号：US380026
申请日：1982-05-19
申请人： James O. Cheshire , Douglas L. Lindgren , Robert J. Marinack , Bruce W. Janda , Robert S. Thut , John T. Larkey , Ray E. Jostad
发明人： James O. Cheshire , Douglas L. Lindgren , Robert J. Marinack , Bruce W. Janda , Robert S. Thut , John T. Larkey , Ray E. Jostad
CPC分类号： D21F9/003 , D21F11/002
摘要： Apparatus and method for the manufacture of a non-woven fibrous web, such as paper, from a dispersion of fibers in a foamed liquid. In a preferred embodiment, a solution of surfactant in water is initially discharged from a headbox into the nip of a twin forming wire prior to its passage over a curvilinear path defined by a forming roll. The water-surfactant solution is caused repeatedly to pass through the outer one of the twin forming wires until there is created, and stored in a silo, a foamed liquid containing about 65% air in the form of bubbles of from about 20 to about 200 microns in diameter. The foamed liquid is directed from the silo into a mix tank wherein a slurry containing fibers at 20% to 55% solids is added and mixed. The mixture is pumped to the headbox and into the nip of the forming wires. The outer wire retains the fibers while passing and again foaming the liquid for return to the silo and the mix tank for addition of fibers and return to the headbox. The process is continued in formation of a fibrous web.In an alternative embodiment, the curvilinear path is defined by an arcuate surface that is fluid pervious so that the solution to be foamed may pass through both the inner and outer wires.A further alternative embodiment utilizes a single forming wire for receiving the solution prior to passage over a suction breast roll which receives the solution then centrifuges it outwardly in formation of foamed liquid.
摘要翻译： 用于从发泡液体中的纤维分散体制造非织造纤维网如纸的设备和方法。 在一个优选的实施方案中，表面活性剂在水中的溶液最初在从成型辊通过由成形辊限定的曲线路径之前从流浆箱排出到双成形丝的辊隙中。 反复引起水表面活性剂溶液通过双成型丝线的外部，直到产生并存储在筒仓内，包含约20至约200个气泡形式的约65％空气的泡沫液体 直径微米。 泡沫液体从筒仓引导到混合罐中，其中加入含有20％至55％固体的纤维的浆料并混合。 将混合物泵送到流浆箱并进入成形丝的辊隙中。 外线保持纤维，同时通过并再次发泡液体以返回料仓和混合罐以加入纤维并返回流浆箱。 纤维网的形成继续进行。 在替代实施例中，曲线路径由可渗透流体的弓形表面限定，使得待发泡的溶液可以穿过内部和外部线。 另一个替代实施例使用单个成形线在通过吸收乳房辊之前接收溶液，接收溶液然后将其离心离心以形成发泡液体。
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公开(公告)号：US4543156A
公开(公告)日：1985-09-24
申请号：US574287
申请日：1984-01-26
申请人： James O. Cheshire , Douglas L. Lindgren , Robert J. Marinack , Bruce W. Janda , Robert S. Thut , John T. Larkey , Ray E. Jostad
发明人： James O. Cheshire , Douglas L. Lindgren , Robert J. Marinack , Bruce W. Janda , Robert S. Thut , John T. Larkey , Ray E. Jostad
CPC分类号： D21F9/003 , D21F11/002
摘要： Apparatus and method for the manufacture of a non-woven fibrous web such as paper from a dispersion of fibers in a foamed liquid in which fiber furnished in a foamed liquid comprising a solution of surfactant in water is discharged from a headbox into the nip of a twin forming wire prior to its passage over a forming roll. The water-surfactant solution is drained from the web and recycled as a foamed liquid containing about 65% air in the form of bubbles of from about 20 to about 200 microns in diameter. The foamed liquid is directed into a mix tank wherein a slurry containing fiber at 20% to 55% solids is added and mixed. The mixture is pumped to the headbox and into the nip of the forming wires.
摘要翻译： 用于从发泡液体中的纤维分散体制造非织造纤维网如纸的装置和方法，其中在包含水中的表面活性剂溶液的泡沫液体中提供的纤维从流浆箱排出到 双成形丝在其通过成形辊之前。 将水表面活性剂溶液从纸幅中排出并作为发泡液体再循环，该泡沫液体含有直径为约20至约200微米气泡形式的约65％的空气。 将发泡的液体引入混合槽中，其中加入含有20％至55％固体的纤维的浆料并混合。 将混合物泵送到流浆箱并进入成形丝的辊隙中。
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公开(公告)号：US4764253A
公开(公告)日：1988-08-16
申请号：US816339
申请日：1986-01-06
CPC分类号： D21F1/06 , D21F11/002
摘要： In a papermaking or like operation wherein fibers are supplied to a headbox in a foamed furnish, a method of controlling furnish flow including the steps of controllably advancing the furnish along a flow path to the headbox, measuring the volume flow rate of furnish through a fixed cross-sectional area in the path with a magnetic flowmeter, combining the flow rate measurement at least with measured values of furnish density and pressure in the path and with a reference pressure value to obtain a corrected volume flow rate value, and controlling the advance of furnish in the path upon departure of this corrected value from a desired value so as to change the corrected value toward the desired value. A temperature measurement can also be combined with the other measured values, and with a reference temperature value, in obtaining the corrected flow rate value. If the headbox has a variable slice opening, a measured value of slice opening dimension can be combined with the corrected volume flow rate value to ascertain the discharge velocity of the furnish issuing from the headbox, and the control of furnish advance can be made responsive to departure of this ascertained velocity from a desired value so as to charge the ascertained velocity toward the desired value. The method can be practiced to control plural furnish flows supplied to a multichannel headbox, with the corrected flow rate values of the individual flows being summed to obtain a total flow rate or ascertained velocity value for control of overall flow conditions. Apparatus for controlling a flow or flows of foamed furnish includes a magnetic flowmeter, devices for making and transmitting measurements of at least furnish density and pressure, a control unit for receiving and combining the measurements thus made by the flowmeter and the other devices, and furnish flow control means such as a variable speed pump controlled by signals from a control unit.
摘要翻译： 在其中将纤维供应到泡沫配料中的流浆箱的造纸或类似操作中，一种控制配料流的方法，包括以下步骤：将配料沿着流动路径可控地推进到流浆箱，通过固定的方式测量配料的体积流量 使用磁流量计在路径中的横截面积，将流量测量至少与路径中的配料密度和压力的测量值和参考压力值相结合，以获得校正的体积流量值，并且控制前进 在将该校正值从期望值离开时在路径中提供，以便将校正值改变为期望值。 温度测量也可以与其他测量值和参考温度值相结合，以获得校正的流量值。 如果流浆箱具有可变切片开口，则可以将切片开口尺寸的测量值与校正的体积流量值组合以确定从流浆箱发出的配料的排出速度，并且可以对配料提前的控制作出响应 将该确定的速度从期望值的偏离，以便将确定的速度朝向期望值充电。 可以实施该方法来控制提供给多通道流浆箱的多个配料流，将各个流量的校正流量值相加以获得用于控制总流量条件的总流量或确定的速度值。 用于控制发泡配料的流动或流动的装置包括磁流量计，用于制造和传输至少配料密度和压力的测量的装置，用于接收和组合由流量计和其它装置所做出的测量的控制单元， 流量控制装置，例如由来自控制单元的信号控制的变速泵。
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公开(公告)号：US4443297A
公开(公告)日：1984-04-17
申请号：US305738
申请日：1981-09-25
申请人： James O. Cheshire , Douglas L. Lindgren , Robert J. Marinack , Bruce W. Janda , Robert S. Thut , John T. Larkey , Ray E. Jostad
发明人： James O. Cheshire , Douglas L. Lindgren , Robert J. Marinack , Bruce W. Janda , Robert S. Thut , John T. Larkey , Ray E. Jostad
CPC分类号： D21F9/003 , D21F11/002
摘要： Apparatus and method for the manufacture of a non-woven fibrous web, such as paper, from a dispersion of fibers in a foamed liquid. In a preferred embodiment, a solution of surfactant in water is initially discharged from a headbox into the nip of a twin forming wire prior to its passage over a curvilinear path defined by a forming roll. The water-surfactant solution is caused repeatedly to pass through the outer one of the twin forming wires until there is created, and stored in a silo, a foamed liquid containing about 65% air in the form of bubbles of from about 20 to about 200 microns in diameter. The foamed liquid is directed from the silo into a mix tank wherein a slurry containing fibers at 20% to 55% solids is added and mixed. The mixture is pumped to the headbox and into the nip of the forming wires. The outer wire retains the fibers while passing and again foaming the liquid for return to the silo and the mix tank for addition of fibers and return to the headbox. The process is continued in formation of a fibrous web.In an alternative embodiment, the curvilinear path is defined by an arcuate surface that is fluid pervious so that the solution to be foamed may pass through both the inner and outer wires.A further alternative embodiment utilizes a single forming wire for receiving the solution prior to passage over a suction breast roll which receives the solution then centrifuges it outwardly in formation of foamed liquid.
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