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1. 发明授权

US4371488A Method and apparatus for extruding foamed bodies involving the use of adjustable traction shaping rolls 失效
标题翻译：用于挤压发泡体的方法和装置，涉及使用可调牵引成型辊
公开(公告)号：US4371488A
公开(公告)日：1983-02-01
申请号：US250266
申请日：1981-04-02
申请人： Arthur L. Phipps , Ben Stoyanov
发明人： Arthur L. Phipps , Ben Stoyanov
IPC分类号： B29C47/34 , B29B7/00 , B29C44/50 , B29C47/00 , B29C47/14 , B29C47/90 , B29C47/92 , B29K105/04 , B29D27/00 , B29D7/24 , B29F3/01
CPC分类号： B29C44/505 , B29C44/50 , B29L2007/00
摘要： An improved method and apparatus using edge shaping and traction rolls is disclosed for shaping and forming plastic foams as a foamable extrudate is extruded through an arcuate orifice of an extrusion die. Immediately adjacent and downstream of the die orifice are opposed sets of curved rolls, each having substantially the same center of curvature as the die orifice and being positioned, respectively, on opposite sides of the extrudate pass line. Moreover, two pairs of traction shaping rolls downstream of the curved rolls engage edge portions of the extrudate further to assist in shaping the same especially in connection with the shaping and forming of relatively wide bodies of plastic foam material. Several parameters of the traction rolls may be adjusted to selected values affecting the force and direction applied by such rolls to the extrudate. Parameters such as compression force, slippage, angle of attack, and/or surface area of the extrudate over which such forces may be applied, may be remotely adjusted.
摘要翻译：公开了一种使用边缘成形和牵引辊的改进的方法和装置，用于成型和形成塑料泡沫，因为可发泡挤出物通过挤出模头的弓形孔挤出。在模具孔口的紧邻和下游处是相对的一组弯曲辊，每组弯曲辊具有基本上与模头孔基本上相同的曲率中心并分别定位在挤出物通过线的相对侧上。此外，弯曲辊下游的两对牵引成型辊与挤出物的边缘部分接合以进一步帮助成形，特别是与相对较宽的塑料泡沫材料的成形和形成有关。可以将牵引辊的几个参数调节到影响由这种辊施加到挤出物的力和方向的选定值。可以远程地调整诸如压缩力，滑移，迎角和/或可以施加这种力的挤出物的表面积等参数。

2. 发明授权

US5120481A Process for preparing extruded foam bodies 失效
标题翻译：挤出泡沫体的制备方法
公开(公告)号：US5120481A
公开(公告)日：1992-06-09
申请号：US598020
申请日：1990-10-12
申请人： Joseph A. Brackman , Raymond M. Breindel
发明人： Joseph A. Brackman , Raymond M. Breindel
IPC分类号： C08J9/14
CPC分类号： B29C44/3407 , C08J9/144 , C08J2325/02
摘要： A process for preparing an extruded thermoplastic resin elongate foam body comprising an alkenyl-substituted aromatic resin characterized as having a density of between about 0.9 to about 3.5 pounds per cubic foot is described. The process comprises the steps of (A) heat plastifying the thermoplastic resin; (B) adding at least one fluid blowing agent comprising at least one of 1-chloro-1,1-difluoroethane, 1,1,1,2-tetrafluoroethane and 2-chloro-1,1,1,2-tetrafluoroethane; (C) uniformly mixing the blowing agent in the resin under a pressure sufficient to prevent blowing of the resin thereby forming a blowable resin mixture; (D) extruding the mixture into a region of reduced pressure which is less than atmospheric pressure wherein the blowable resin mixture expands into a foam body; and (E) cooling the foam body. In one embodiment, the region of less than atmospheric pressure is formed by an elongated chamber with the blowable resin mixture passing through a die at one end of such chamber and such foam body passing through a pool of water at the opposite end of the chamber. The process results in the formation of extruded expanded thermoplastic resins such as polystyrene resins characterized as having relatively small average cell sizes such as from about 0.2 to about 0.5 mm., improved and higher compressive strengths, and higher cell volumes.
摘要翻译：描述了一种制备挤出的热塑性树脂细长泡沫体的方法，其包含密度为约0.9至约3.5磅/立方英尺的密度的烯基取代的芳族树脂。该方法包括以下步骤：（A）对热塑性树脂进行热塑化; （B）添加至少一种包含1-氯-1,1-二氟乙烷，1,1,1,2-四氟乙烷和2-氯-1,1,1,2-四氟乙烷中的至少一种的流体发泡剂; （C）在足以防止树脂吹入的压力下将发泡剂均匀地混合在树脂中，从而形成可吹塑树脂混合物; （D）将混合物挤出到小于大气压的减压区域，其中可吹塑树脂混合物膨胀成泡沫体; 和（E）冷却泡沫体。在一个实施方案中，小于大气压的区域由细长的室形成，其中可吹塑树脂混合物通过这种室的一端处的模具，并且这种泡沫体通过在室的相对端的水池。该方法导致挤出的发泡热塑性树脂如聚苯乙烯树脂的形成，其特征在于具有相对较小的平均泡孔尺寸，例如约0.2至约0.5mm，改善的和较高的压缩强度以及更高的泡孔体积。

3. 发明授权

US4783291A Method and apparatus for foam extrusion into a vacuum chamber having a liquid baffle with control of the liquid level 失效
标题翻译：用于泡沫挤出到具有控制液位的液体挡板的真空室中的方法和装置
公开(公告)号：US4783291A
公开(公告)日：1988-11-08
申请号：US80680
申请日：1987-08-03
申请人： Rafael Pagan
发明人： Rafael Pagan
IPC分类号： B29C44/34 , B29C44/50 , B29C47/00 , B29C47/76 , B29C67/22 , B29C47/92
CPC分类号： B29C44/3407 , B29C44/3403 , B29C44/50 , B29C47/92 , B29C2791/006 , B29C2947/92019 , B29C2947/92428 , B29C2947/92514 , B29C2947/92923
摘要： A foam extrusion system and method employs a horizontal vacuum chamber with a bulkhead and extrusion die at one end of the chamber, the extrusion die being inside the chamber when the bulkhead is closed. A liquid baffle, preferably water, is provided at the opposite end of the chamber through which the extrudate passes from the chamber to atmosphere. The baffle comprises a pond of liquid having a higher level in the chamber and a lower level outside the chamber. The higher level of the pond is formed between a dam plate and a seal plate, the latter forming the opposite end of the chamber. The seal plate includes a size adjustable window through which the extrudate passes, the extrudate being guided by a conveyor to extend inclined downwardly into the pond and to exit through the seal plate and pond with a large radius upwardly curved section. The level of liquid in the chamber is controlled by circulating liquid from the higher level of the pond within the chamber to the lower level of the pond outside the chamber with the amount of liquid circulated being inversely proportional to the absolute pressure in the vacuum chamber. Optionally the circulated liquid may pass through a cooler to control the liquid temperature. The size adjustment of the window or exit orifice in the seal plate may be used to control the flow of liquid from the lower level pond portion outside the chamber to the higher level pond portion inside the chamber, particularly during start up.

4. 发明授权

US4445837A Foam extrusion die and monitoring apparatus 失效
标题翻译：泡沫挤出模头和监测装置
公开(公告)号：US4445837A
公开(公告)日：1984-05-01
申请号：US422678
申请日：1982-09-24
申请人： James R. Cisar , Attila Grauzer
发明人： James R. Cisar , Attila Grauzer
IPC分类号： B29C44/50 , B29C48/31 , B29C48/92 , B29D27/00 , B29F3/04 , G01B5/14
CPC分类号： B29C47/0816 , B29C44/505 , B29C47/16 , B29C47/92 , B29C2947/92114 , B29C2947/92409 , B29C2947/92571 , B29C2947/92609 , B29C2947/92904 , B29C47/0019 , B29L2007/00
摘要： A foam extrusion die and monitoring apparatus, including a pair of adjustable die lip members having opposed, rigid die lips defining therebetween an elongated arcuate die orifice, is characterized by position sensors located along the arc of the die lips to monitor the die opening at such locations. The position sensors include sensing styli mounted for movement with the lip members at respective sensing locations such as at the arc ends and arc centers of the die lips, and provision is made for connecting the sensing styli as by precision push-pull, flexible cables to respective linear variable displacement transformers which provide electrical output signals representative of sensed positions to remotely located monitoring circuitry. The apparatus has particular application in a vacuum extrusion line wherein the extrusion die is located inside a vacuum chamber and thus is inaccessible during extrusion. In such application, the apparatus provides immediate read-out of die lip position data outside of the vacuum chamber for use in accurately obtaining and maintaining desired die orifice size and shape.
摘要翻译：一种泡沫挤出模头和监测装置，包括一对可调节的模唇元件，其具有在其间限定细长弓形模孔的相对的刚性模唇，其特征在于沿着模唇的弧形定位的位置传感器以这样的方式监测模具开口位置。位置传感器包括感测测针，其安装用于使唇部构件在相应的感测位置（例如在模唇的弧端和圆弧中心处）移动，并且提供用于通过精密推拉，柔性电缆将感测测针连接到相应的线性可变位移变压器，其将表示所感测位置的电输出信号提供给远程定位的监控电路。该设备特别适用于真空挤出生产线，其中挤出模具位于真空室内，因此在挤出过程中是不可接近的。在这种应用中，该装置提供在真空室外立即读出模唇位置数据，以用于精确获得和维持所需的模孔尺寸和形状。

5. 发明授权

US4454082A Method and apparatus for monitoring the thickness of a foamed extrudate in an environmental control chamber downstream of an extrusion die 失效
标题翻译：用于监测在挤出模头下游的环境控制室中的发泡挤出物的厚度的方法和装置
公开(公告)号：US4454082A
公开(公告)日：1984-06-12
申请号：US422679
申请日：1982-09-24
申请人： James R. Cisar , Attila Grauzer
发明人： James R. Cisar , Attila Grauzer
IPC分类号： B29B7/00 , B29C44/50 , B29C44/60 , B29C47/00 , B29C47/16 , B29C47/34 , B29C47/90 , B29C47/92 , B29D27/00
CPC分类号： B29C47/92 , B29C44/50 , B29C44/60 , B29C2947/92076 , B29C2947/92114 , B29C2947/92152 , B29C2947/92428 , B29C2947/92647 , B29C2947/92904 , B29C47/0019
摘要： An apparatus adapted to be positioned downstream of a foam extrusion die in an environmental control or vacuum chamber for remote monitoring of the thickness and profile of foam boards, planks and like extrudates soon after the extrudate exits the die and takes its final shape, is characterized by opposed, relatively narrow shoes on opposite sides of the extrudate path and respective carriages therefor which together are movable transversely with respect to the extrudate path by respective worms and translating nuts and a common worm drive. One shoe is operative to support the bottom surface of the extrudate in a predetermined position while the other shoe rides on the extrudate and is position monitored by a transducer operative then to provide an output signal representative of the spacing between the shoes, and thus the thickness of the extrudate passing between the shoes, to remote monitoring circuitry located outside of the vacuum chamber. Through operation of the common worm drive, extrudate thickness is measured at points along the width of the extrudate for overall thickness and profile monitoring. Quick and responsive die adjustments then are made in response to immediate readout of product thickness and profile data thereby to minimize off-specification or scrap product. Provision also is made for pivoting one of the shoes and respective carriage clear of the extrudate path such as in the case of a jam-up.
摘要翻译：一种适于位于环境控制或真空室内的泡沫挤出模头下游的装置，用于远程监测挤出物离开模头并采用其最终形状之后不久的泡沫板，板条和类似挤出物的厚度和轮廓的特征通过在挤出物路径的相对侧上相对较窄的鞋子和相应的托架，它们通过相应的蜗杆和平移螺母以及共同的蜗杆传动器相对于挤出物路径横向移动。一个鞋子可操作以将挤出物的底面支撑在预定位置，而另一个鞋垫在挤出物上，并且由可操作的换能器监测位置，以便提供代表鞋之间的间隔的输出信号，因此厚度的挤出物通过鞋之间的位置到位于真空室外部的远程监控电路。通过普通蜗杆传动的操作，在挤出物宽度的点处测量挤出物的厚度，以进行总体厚度和轮廓监测。然后响应于立即读出产品厚度和轮廓数据，进行快速和响应性的模具调整，从而最大程度地减少不合规格或废品。还提供了用于使诸如在挤塞情况下的挤出物路径之外的一个鞋和相应的托架的枢转。

6. 发明授权

US4364722A Foam extrusion die assembly 失效
标题翻译：泡沫挤出模具组装
公开(公告)号：US4364722A
公开(公告)日：1982-12-21
申请号：US250273
申请日：1981-04-02
申请人： Arthur L. Phipps
发明人： Arthur L. Phipps
IPC分类号： B29B7/00 , B29C47/00 , B29C47/14 , B29C47/16 , B29C47/86 , B29C47/92 , B29K105/04 , B29F3/04
CPC分类号： B29C47/165 , B29C44/50 , B29C44/505 , B29C47/0019 , B29L2007/00
摘要： A foam extrusion die assembly includes a die body and a pair of spaced cantilevered lip members having opposed lips defining an elongated, arcuate die orifice through which extrudate moves both laterally and axially outwardly relative to the lip members. Each lip member further has an axially extending flexible leg and a foot at the end of the leg opposite the lip. Each foot is adjustably and sealingly clamped to the die body by a retainer bar whereas each leg is free to flex to pivot the lips with respect to each other. Adjustment screws journaled in the die body vary the spacing between the feet of the lip members and pivot the lips about the flexible legs to produce a desired die orifice size and shape.
摘要翻译：泡沫挤出模具组件包括模具主体和一对间隔开的悬臂唇形构件，其具有限定细长的弓形模孔的相对的唇部，挤出物相对于唇部构件横向和轴向地向外移动。每个唇缘构件还具有轴向延伸的柔性腿部和在腿部的与嘴唇相对的端部处的脚部。每个脚通过保持杆可调节地并且密封地夹紧到模具本体，而每个腿部可自由地使唇部相对于彼此枢转。在模具主体中轴颈调节螺钉改变唇部件的脚部之间的间隔并使唇部围绕柔性腿部枢转以产生所需的模孔尺寸和形状。

7. 发明授权

US4469652A Foam extrusion apparatus and method 失效
标题翻译：泡沫挤出装置及方法
公开(公告)号：US4469652A
公开(公告)日：1984-09-04
申请号：US420262
申请日：1982-09-20
申请人： James R. Cisar , Kilian K. Mendel
发明人： James R. Cisar , Kilian K. Mendel
IPC分类号： B29B7/00 , B29C43/24 , B29C44/00 , B29C44/50 , B29C47/00 , B29C47/90 , B29C47/92 , B29D27/00
CPC分类号： B29C44/3407 , B29C44/50 , B29C44/56 , B29C43/24
摘要： A foam extrusion apparatus and method in which extrudate is extruded into a sealed chamber which may be subjected to pressure variation such as a vacuum with the controlled shaping of the plastic being obtained by power driven rolls within the chamber downstream of the die. Because of the harsh environmental conditions within the chamber it is desirable that the shaping or forming rolls be driven by an externally powered source which will therefore be not subject to the pressure, vacuum, or other deliterious conditions found within the chamber. Moreover, because of the external position of the drive with regard to the chamber, the entire system need not then be shut down in order to open the chamber and make the required adjustments or repairs. The chamber is preferably the upper end of a barometric leg into which the extrudate passes. The upper end of the chamber is closed by one or more bulkheads which are movable toward and away from the upper end of the chamber. The present invention utilizes DC drive motors on the exterior of the bulkheads and of course the chamber to drive the shaping rolls which are downstream of the die. With this arrangement, both torque and speed may be closely controlled and of course the chamber does not require to be opened to make adjustments, replacements or repairs to the power system.
摘要翻译：一种泡沫挤出装置和方法，其中将挤出物挤出到可经受压力变化的密封室中，例如通过在模具下游的室内的动力驱动辊获得的塑料的可控成形的真空。由于室内恶劣的环境条件，期望成型或成型辊由外部供电源驱动，因此外部动力源将不会受到室内发现的压力，真空或其他错误条件的影响。此外，由于驱动器关于腔室的外部位置，因此整个系统不需要关闭以便打开腔室并进行所需的调整或修理。该腔室优选地是挤出物通过的气压腿的上端。腔室的上端由一个或多个可朝向和远离腔室上端运动的隔板封闭。本发明在隔板的外部利用直流驱动电动机，当然也可以使腔室驱动在模具下游的成形辊。通过这种布置，扭矩和速度可以被紧密地控制，并且当然，室不需要打开以对电力系统进行调整，更换或修理。

8. 发明授权

US4395214A Foam extrusion apparatus having downstream upper and lower hinged shaping means and side restraining means 失效
标题翻译：具有下游上下铰链成形装置和侧限制装置的泡沫挤出装置
公开(公告)号：US4395214A
公开(公告)日：1983-07-26
申请号：US297036
申请日：1981-08-27
申请人： Arthur L. Phipps , Ben Stoyanov
发明人： Arthur L. Phipps , Ben Stoyanov
IPC分类号： B29B7/00 , B29C39/00 , B29C44/50 , B29C48/355 , B29C48/90 , B29K105/04 , B29D27/00 , B29F3/04
CPC分类号： B29C47/34 , B29C44/50 , B29C47/0016 , B29C47/0019
摘要： An apparatus is provided for forming, shaping and surface finishing a foam extrudate as it expands and passes from an extrusion die to obtain, in particular, foam or cellular bodies having a substantial thickness in relation to their width. The apparatus comprises opposed extrudate shaping members located on opposite sides of the die orifice of the extrusion die and extending immediately downstream therefrom. The upstream end of each shaping member is hingedly supported adjacent and preferably slightly upstream from the die orifice, and the hinged supports at the upstream ends of the shaping members are uniformly adjustable towards and away from the central transversely extending plane of the extrusion die. The downstream end of each shaping member is hinged to a respective conveyor or surface finishing member of a conveyor or surface finishing assembly. The conveyor or surface finishing members each include a moving belt backed by relatively large area plates, and together form therebetween a downstream continuation of the passageway formed between the shaping members. One of the conveyors is air balanced or floated at its upstream and downstream ends by piston-cylinder assemblies and urged against the extrudate at controlled pressure. The other conveyor is adjustably yet fixedly secured at its upstream and downstream ends.
摘要翻译：提供了一种用于在泡沫挤出物膨胀并从挤出模头通过时形成，成形和表面整理的设备，以特别获得相对于其宽度具有相当厚度的泡沫或细胞体。该设备包括位于挤出模头的模孔的相对侧上的相对的挤出物成型构件，并且在其下游延伸。每个成型构件的上游端被铰接地支撑在模具孔附近并且优选地稍微上游，并且成形构件的上游端处的铰接支撑件可以朝向和远离挤压模的中心横向延伸的平面均匀地调节。每个成形构件的下游端铰接到输送机或表面精加工组件的相应输送机或表面精加工构件。输送机或表面处理构件各自包括由相对较大的面积板支撑的移动带，并且在其间形成在成形构件之间形成的通道的下游延续部。输送机之一是通过活塞 - 气缸组件在其上游和下游端部进行空气平衡或浮动，并以受控的压力推压挤出物。另一个传送带可调节地固定在其上游和下游端。

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