公开(公告)号：US5128379A

公开(公告)日：1992-07-07

申请号：US674438

申请日：1991-03-22

Applicant: Herman Stone

Inventor： Herman Stone

IPC: B29C35/16 ,  B29C44/20 ,  B29C44/34 ,  C08J9/22

CPC classification number: B29C35/16 ,  B29C44/20 ,  B29C44/3419 ,  B29C44/56 ,  B29C2035/1658 ,  B29C2035/1691 ,  Y10S521/918

Abstract: An improved process for rapidly cooling hot freshly polymerized foam is provided by passage of a fluid coolant stream having a water vapor content which initially is in the range from slightly below to above the dew point. In preferred embodiments the cooling fluid stream is recirculated, and auxiliary blowing agents and gaseous reaction products are removed and recovered.

Abstract translation: 通过具有最初在稍低于露点以上范围内的水蒸汽含量的流体冷却剂流而提供用于快速冷却热新鲜聚合泡沫的改进方法。 在优选的实施方案中，冷却流体流被再循环，并且除去和回收辅助发泡剂和气态反应产物。

公开(公告)号：US5082608A

公开(公告)日：1992-01-21

申请号：US538291

申请日：1990-06-14

Applicant: James A. Karabedian ,  Maurice W. Blackwelder

Inventor： James A. Karabedian ,  Maurice W. Blackwelder

IPC: B29C47/00 ,  B29C44/00 ,  B29C44/34 ,  B29C44/50 ,  B29C44/56 ,  B29C47/06 ,  B29C47/14 ,  B29K25/00 ,  B29K105/04 ,  B29L7/00 ,  C08J9/12 ,  C08L25/00 ,  C08L25/06

CPC classification number: B29C44/3419 ,  B29C44/34 ,  B29C44/3402 ,  B29C44/3442 ,  B29C44/50 ,  B29C44/5609 ,  B29C47/0026 ,  B29C47/822 ,  C08J9/122 ,  B29L2031/7132 ,  B29L2031/744 ,  Y10T428/249953

Abstract: The method of making polystyrene foam for foam products which includes utilizing atmospheric gases as the blowing agents or preferably mixing one or more of these gases and a blending agent which is non-volatile at the extrusion temperatures, introducing the mixture to a molten thermoplastic polystyrene resin containing nucleating agents such as sodium bicarbonate and citric acid and extruding the thermoplastic in the form of a foam. The resultant foam has substantially no residual blowing agent, is dimensionally stable at ambient temperatures and when used with a non-volatile blending agent can be made with small amounts of blowing agent permitting cooling of the melt without high loading on the extruder. The foam may be coextruded with one or more layers of thermoplastic films so that the resultant product is adpated for use for plates, cups, food containers or packaging and for labells for containers such as glass and plastic containers and for labels that are shrunk in place on a container.

Abstract translation: 制造用于泡沫产品的聚苯乙烯泡沫的方法，其包括利用大气气体作为发泡剂或优选混合这些气体中的一种或多种，​​以及在挤出温度下不挥发的共混剂，将混合物引入熔融热塑性聚苯乙烯树脂 含有成核剂如碳酸氢钠和柠檬酸，并以泡沫的形式挤出热塑性塑料。 所得到的泡沫体基本上没有残余发泡剂，在环境温度下尺寸稳定，并且当与不挥发性共混剂一起使用时可以用少量的发泡剂制备，从而在挤出机上没有高负荷的情况下冷却熔体。 泡沫可以与一层或多层热塑性膜共挤出，使得所得产品适用于板，杯，食品容器或包装，以及用于诸如玻璃和塑料容器的容器的标签以及用于收缩的标签 在容器上

公开(公告)号：US5037592A

公开(公告)日：1991-08-06

申请号：US335159

申请日：1989-04-07

Applicant: Hans Erlenbach

Inventor： Hans Erlenbach

IPC: B29C44/00 ,  B29C33/02 ,  B29C44/58

CPC classification number: B29C44/3419 ,  B29C44/445 ,  B29C44/58 ,  B29C33/02 ,  Y10S264/10

Abstract: To make a molded article from expandable synthetic resin particles, especially polystyrene particles, the cooling of the individual mold wall portions is effected exclusively by evaporating condensate obtained from stream, advantageously condensate which accumulates in stream compartments on the exterior or back sides of the mold walls which was fed in for heating of the mold wall portions and fusing the synthetic resin particles. This evaporation of condensate is effected on the back surfaces of the mold wall portions facing the steam compartments because of a low pressure or suction produced in the steam compartments. The condensate is fed in hot at or just below the boiling temperature of the condensate. Surfaces of the mold wall portions facing the steam compartment have increased surface area by reason of spherical surface-area increasing elements which form constricted passages between a plurality of interior reservoir cavities and the outside steam compartment.

Abstract translation: 为了由可膨胀的合成树脂颗粒，特别是聚苯乙烯颗粒制成模制品，各个模具壁部分的冷却完全通过蒸发从流中获得的冷凝物，有利地是在模具壁的外侧或后侧积聚在流动隔室中的冷凝物 供给加热模具壁部分并熔合合成树脂颗粒。 由于在蒸汽隔室中产生的低压或抽吸，冷凝物的蒸发在面向蒸汽隔室的模具壁部分的后表面上实现。 冷凝物在冷凝水的沸点或低于冷凝水的沸腾温度下加热。 面对蒸汽隔室的模具壁部分的表面由于在多个内部储存腔和外部蒸汽隔室之间形成狭窄通道的球形表面积增加元件而增加了表面积。

公开(公告)号：US3763293A

公开(公告)日：1973-10-02

申请号：US3763293D

申请日：1972-02-03

Applicant: BISCHOFF CHEMICAL CORP

Inventor： NUSSBAUM F

IPC: B29C33/04 ,  B29C33/56 ,  B29C35/00 ,  B29C44/04 ,  B29C44/34 ,  B06B3/00 ,  B29D27/00 ,  B29F1/06

CPC classification number: B29C44/3419 ,  B29C33/04 ,  B29C33/56 ,  B29C35/007 ,  B29C44/0407 ,  B29C2791/008 ,  B29K2105/04 ,  Y10S264/83

Abstract: PROGRAMMING, AND/OR DIFFERENTIAL PRESSURE PROGRAMMING FOR DIFFERENT ZONES OF THE ARTICLE. VARIOUS SUPPLEMENTAL AND/OR OPTIONAL FEATURES ARE DISCLOSED.

GIANT SIZED PLASTIC ARTICLES ARE MASS PRODUCED WITH AUTOMATION BY LOW PRESSURE INJECTION MOLDING. AN ARTICLE IS DESIGNED TO ACHIEVE THE ULTIMATE ENGINEERING PERFORMANCE OF THE INTERNAL STRUCTURE IN RELATION TO ITS EXTERNAL SHAPE, THUS PROVIDING ZONES IN WHICH THE INTERNAL STRUCTURE IS DIFFERENT FROM OTHER ZONES, ANDSUCH DIFFERENCES ARE IMPARTED BY THE CONTROL OF THE MOLDING PROCESS. THE PROPORTIONS OF GAS AND MOLTEN PLASTIC ARE CAREFULLY CONTROLLED PRIOR TO THE ACCUMULATION OF THE FEED IN A BATCHING DEVICE. A SHOT OF FEED FLOWS THROUGH A DISTRIBUTION SYSTEM INTO A STRUCTURIZER MOLD HAVING CONTOURED WALLS OF LOW SPECIFIC HEAT AND HAVING HEAT TRANSFER MEANS PERMITTING DIFFERENTIAL PROGRAMMING OF THE TEMPERATURE OF DIFFERENT ZONES. BEFORE THE ARTICLE HAS SOLIDIFIED IN THE STRUCTURIZER MOLD, THE DESIRED DIFFERENCES IN INTERNAL STRUCTURE ARE IMPARTED BY REASON OF THE DIFFERENTIAL TEMPERATURE

公开(公告)号：US3671168A

公开(公告)日：1972-06-20

申请号：US3671168D

申请日：1971-06-09

Applicant: BISCHOFF CHEMICAL CORP

Inventor： NUSSBAUM FRANK J

IPC: B29C33/04 ,  B29C33/56 ,  B29C35/00 ,  B29C44/04 ,  B29C44/34 ,  B29C1/00

CPC classification number: B29C44/3419 ,  B29C33/04 ,  B29C33/046 ,  B29C33/56 ,  B29C35/007 ,  B29C44/0407 ,  B29K2105/04 ,  Y10S264/83

Abstract: THIN WALLED MOLDS HAVING A THICKNESS WITHIN A RANGE FROM ABOUT 0.4 MM. TO ABOUT 4 MM. AND HAVING A HEAT CAPACITY LESS THAN THE HEAT CAPACITY OF THE MOLDED ARTICLE ARE PROVIDED IN APPARATUS FOR INJECTION MOLDING OF PLASTIC FOAM. IN CERTAIN EMBODIMENTS, HEAT TRANSFER FLUID IS CIRCULATED IN A ZONE ADJACENT THE THIN WALLED MOLD FACE. IN SOME EMBODIMENTS OF THE INVENTION, AN OUTER SHELL CAN PROVIDE SUPPLEMENT STRUCTURAL STRENGTH, WHILE BEING INSULATED BY CLOSED PORE INSULATION FROM THE TEMPERATURE CHANGES AND HEAT CAPACITY FEATURES OF THE MOLD FACE.

公开(公告)号：US3398035A

公开(公告)日：1968-08-20

申请号：US23538762

申请日：1962-11-05

Applicant: DOW CHEMICAL CO

Inventor： CLEEREMAN KENNETH J ,  DIRKSE DONALD J

IPC: B29C44/34 ,  B29C44/56 ,  B32B27/00

CPC classification number: B29C44/569 ,  B29C44/3419 ,  B32B27/00 ,  Y10T428/249992