公开(公告)号：US4857390A

公开(公告)日：1989-08-15

申请号：US67556

申请日：1987-06-26

申请人： Richard B. Allen ,  Barbara M. Bacskai ,  Daniel L. Roberts ,  Richard C. Bopp

发明人： Richard B. Allen ,  Barbara M. Bacskai ,  Daniel L. Roberts ,  Richard C. Bopp

IPC分类号： B29C47/00 ,  B29C44/34 ,  B29C44/50 ,  B29C47/10 ,  B29C47/38 ,  B29K25/00 ,  B29K71/00 ,  B29K105/04 ,  C08J9/04 ,  C08J9/14 ,  C08L25/06

CPC分类号： C08J9/141 ,  B29C44/3442 ,  B29C44/50 ,  B29C47/1063 ,  B29C47/366 ,  B29C47/38 ,  C08J9/0061 ,  C08J9/143 ,  B29C47/0016 ,  B29K2025/00 ,  B29K2105/0005 ,  B29K2105/046 ,  B29K2995/0063 ,  C08J2205/052 ,  C08J2371/12 ,  C08J2425/00 ,  Y10S264/05 ,  Y10T428/26

摘要： A low density extruded structural foam of closed cell structure having good compressive strength comprising a engineered thermoplastic resin, alone, or containing a flame retarding agent and/or nucleating agent, optionally combined with a vinyl aromatic resin, and a blowing agent is produced by feeding said resin, or composition, into a primary extruder wherein mixing, adding a blowing agent which is essentially insoluble in the resin at room temperature but soluble in the melt and further mixing, then optionally passing the mixture to a second, cooling extruder, passing said extruded mixture through a die, then expanding and foaming said composition into a foam article.

摘要翻译： 包含单独的工程热塑性树脂或任选与乙烯基芳族树脂组合的含阻燃剂和/或成核剂的热塑性树脂和发泡剂具有良好抗压强度的低密度挤压结构泡沫体通过进料 所述树脂或组合物加入到一次挤出机（2）中，其中混合，在室温下添加基本上不溶于树脂的可溶于熔体并进一步混合的发泡剂，然后任选地将混合物通入第二冷却挤出机 （12），使所述挤出的混合物通过模具（8），然后将所述组合物膨胀和发泡成泡沫制品（14）。

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.

公开(公告)号：US4731002A

公开(公告)日：1988-03-15

申请号：US932636

申请日：1986-11-19

申请人： Steven E. Spence ,  Robert F. Shamet ,  Flavio Da Silva ,  Horst Eigruber

发明人： Steven E. Spence ,  Robert F. Shamet ,  Flavio Da Silva ,  Horst Eigruber

IPC分类号： B29C44/50 ,  B29C47/02 ,  B29C47/06 ,  B29C47/20 ,  B29C47/70 ,  B29C47/12

CPC分类号： B29C47/0023 ,  B29C44/334 ,  B29C44/50 ,  B29C47/065 ,  B29C47/20 ,  B29C47/26 ,  B29C47/28 ,  B29C47/702

摘要： A triple-wall foam coextrusion apparatus in which inner and outer layers of one synthetic resin material are coextruded with an intermediate layer of another synthetic resin material, and wherein the passages for the first material are inclined to the axis along which the second material is extruded around a spider to ensure uniform flow.

摘要翻译： 一种三壁泡沫共挤出装置，其中一个合成树脂材料的内层和外层与另一种合成树脂材料的中间层共挤出，并且其中第一材料的通道相对于第二材料挤出的轴线倾斜 围绕蜘蛛保证均匀的流动。

公开(公告)号：US4598101A

公开(公告)日：1986-07-01

申请号：US759776

申请日：1985-07-29

申请人： Charles M. Krutchen ,  Wen-Pao Wu

发明人： Charles M. Krutchen ,  Wen-Pao Wu

IPC分类号： B29C51/00 ,  C08J9/14 ,  C08L25/04 ,  C08L25/06 ,  C08L71/12

CPC分类号： C08J9/145 ,  B29C44/50 ,  B29C51/002 ,  B29C51/00 ,  B29K2079/00 ,  C08J2379/08 ,  Y10S264/05

摘要： A polyphenylene oxide/polystyrene polymer blend foam structure having a density of less than about 20 lbs/ft.sup.3. The method of forming said foam comprising combining the polymer blend with a blowing agent member selected from the group consisting of methylene chloride, chloroform, 1,1,2-trichloroethane and mixtures thereof in molten form under pressure and extruding the same into a lower pressure region to form the foam.

摘要翻译： 聚苯醚/聚苯乙烯聚合物共混泡沫结构，其密度小于约20磅/英3。 形成所述泡沫的方法包括在压力下将熔融形式的聚合物共混物与选自二氯甲烷，氯仿，1,1,2-三氯乙烷及其混合物的发泡剂组合，并将其挤出到较低压力 区域形成泡沫。

公开(公告)号：US4579874A

公开(公告)日：1986-04-01

申请号：US759378

申请日：1985-07-26

申请人： Charles M. Krutchen ,  Wen-Pao Wu

发明人： Charles M. Krutchen ,  Wen-Pao Wu

IPC分类号： B29C51/00 ,  C08J9/04 ,  C08J9/14 ,  C08L61/12 ,  C08L69/00 ,  C08L71/12

CPC分类号： C08J9/145 ,  B29C44/50 ,  B29C51/002 ,  B29C51/00 ,  B29K2079/00 ,  C08J2379/08

摘要： A foam structure having a density of less than about 20 lbs/ft.sup.3. The method of forming the same comprising forming a homogeneous melt blend under pressure of a polymer member selected from the group consisting of polyetherimide resin particles, polycarbonate resin particles, a polymer blend of polyphenylene oxide and polystyrene in particle form imbibed with a blowing agent, followed by extrusion of the same into a lower pressure atmosphere. A composition comprising said particles imbibed with methylene chloride, chloroform, 1,1,2-trichloroethane or mixtures thereof. A method of thermoforming said foam in sheet form.

公开(公告)号：US4536357A

公开(公告)日：1985-08-20

申请号：US575127

申请日：1984-01-30

申请人： Motoshige Hayashi ,  Toshirou Kobayashi ,  Motokazu Yoshii ,  Masahiro Tsubone ,  Mikio Ishikawa

发明人： Motoshige Hayashi ,  Toshirou Kobayashi ,  Motokazu Yoshii ,  Masahiro Tsubone ,  Mikio Ishikawa

IPC分类号： B29C47/90 ,  B29B7/00 ,  B29C44/50 ,  B29C47/00 ,  B29C47/14 ,  B29C67/20 ,  B29D20060101 ,  B29K105/04 ,  B29L7/00 ,  B29D27/00

CPC分类号： B29C44/26 ,  B29C44/50 ,  B29L2007/002 ,  Y10S264/05

摘要： A method for preparing a multi-cellular foamed board of thermoplastic resin which comprises forming under pressure in a die a thermoplastic resin melt containing a foaming agent to give the resin melt a shape of a flat board having a broad width compared with a thickness thereof, extruding the resin melt from the die having the convex forward end with a middle portion in the width direction thereof protruding the greatest toward the extruding direction, introducing thus extruded resin melt immediately into a moulding passage having a concave end engaging with the said convex forward end of the die, allowing the resin melt to expand in the thickness direction at the portion adjacent to and extending along the concave end of the passage, and thereafter allowing the resin melt to expand in both the thickness and width directions of the board in the passage.

摘要翻译： 一种制备热塑性树脂多孔泡沫板的方法，包括在模具中在压力下形成含有发泡剂的热塑性树脂熔体，使树脂熔融成与其厚度相比宽的宽度的平板， 将具有凸形前端的模具的树脂熔体从其宽度方向的中间部分沿着挤出方向突出最大的方式挤出，将这样挤出的树脂熔体立即引入具有与所述凸起前端接合的凹入端的成型通道 使树脂熔体在与通道的凹端相邻并且沿着通道的凹端延伸的部分沿着厚度方向膨胀，然后使树脂熔体在通路的板的厚度方向和宽度方向上膨胀 。

公开(公告)号：US4487731A

公开(公告)日：1984-12-11

申请号：US537832

申请日：1983-09-30

申请人： Osamu Kobayashi

发明人： Osamu Kobayashi

IPC分类号： B29C47/00 ,  B29B7/00 ,  B29C44/00 ,  B29C44/34 ,  B29C44/50 ,  B29C47/90 ,  B29C47/92 ,  B29D27/00

CPC分类号： B29C44/3407 ,  B29C44/3403 ,  B29C44/50 ,  B29C44/56 ,  B29C47/009 ,  B29C47/0092 ,  B29C47/0095 ,  B29C47/92 ,  B29C2947/92019 ,  B29C2947/92428 ,  B29C2947/92438 ,  B29C2947/92514 ,  B29C2947/92923 ,  B29C2947/92933 ,  Y10S425/06

摘要： A process for producing a foamed synthetic resin body comprising continuously extruding a foamable thermoplastic resin extrudate composition from an extruder die into a reduced pressure zone, subjecting the extrudate to an expansion molding step, a cooling-hardening step and a cutting step while transporting the extrudate through the reduced pressure zone to obtain a foamed piece of predetermined length, shutting off a portion of the reduced pressure zone surrounding the foamed piece from the other portion thereof when the foamed piece has reached a specified position to restore the foamed piece surrounding portion to a normal pressure, subsequently discharging the foamed piece into the atmosphere, and thereafter bringing the surrounding portion into communication with the reduced pressure zone again upon reducing the pressure. Foamed resin bodies of desired expansion ratio and shape can be prepared continuously with high cooling efficiency. An apparatus for practicing the process is also disclosed. Such apparatus includes means to form a continuous length of extrudate within a vacuum chamber and means to cut the extrudate to length and means to pass the cut extrudate into a second chamber, and then to cause the cut length to exit the second chamber without affecting the reduced pressure in the chamber or reduced pressure zone.

摘要翻译： 一种发泡合成树脂体的制造方法，其特征在于，包括从挤出机模头连续地挤出发泡性热塑性树脂挤出物组合物到减压区域，对挤出物进行膨胀成型步骤，冷却硬化工序和切断工序，同时输送挤出物 通过减压区域获得预定长度的发泡片材，当发泡片材达到特定位置时，将发泡片材周围部分的减压区域的一部分从其另一部分切断，将发泡片周围部分恢复到 正常压力，随后将发泡片排放到大气中，然后在降低压力的同时使周围部分再次与减压区连通。 可以以高冷却效率连续制备具有所需膨胀比和形状的发泡树脂体。 还公开了一种用于实施该方法的装置。 这种装置包括在真空室内形成连续长度的挤出物的装置，以及将挤出物切割成长度的装置和将切割的挤出物通入第二室的装置，然后使切割长度离开第二室而不影响 减压室或减压区减压。

公开(公告)号：US4486366A

公开(公告)日：1984-12-04

申请号：US458000

申请日：1983-01-14

申请人： Subba K. Reddy

发明人： Subba K. Reddy

IPC分类号： B29C44/00 ,  B29C61/06 ,  B29C61/08 ,  B29C63/00 ,  B29C63/38 ,  B65C3/06 ,  B29D27/00

CPC分类号： B29C61/08 ,  B29C44/50 ,  B29C61/0616 ,  B65C3/065 ,  B29C63/00 ,  B29K2025/00 ,  B29K2105/04 ,  B29K2995/0039

摘要： There is provided a method of continuously producing a highly oriented heat shrinkable single layer of amorphous styrene foam or a composite of a thermoplastic film and an amorphous polystyrene foam to form a heat shrinkable two-layer sheet that is easily stored without substantial shrinkage at ambient temperature, the outstanding single-layer sheet or two-layer sheet being adapted for heat shrinking rapidly to form a label around a container or a cup. The outstanding method comprises extruding a single foam sheet or coextruding a thermoplastic film and an amorphous polystyrene foam layer to form the two-layer sheet, bringing the sheet to its orientation temperature, stretching the two-layer sheet at its orientation temperature in at least a longitudinal direction to provide a dimensionally stable, storable, oriented polystyrene foam sheet or a thermoplastic film/amorphous polystyrene foam layer sheet, printing on the oriented sheet to decorate the same, and heat shrinking the sheet to form a final attractive, decorated structure.

摘要翻译： 提供了一种连续生产高取向热收缩单层无定形苯乙烯泡沫或热塑性薄膜和无定形聚苯乙烯泡沫的复合材料的方法，以形成易于在环境温度下大量收缩而容易储存的可热收缩的两层薄板 ，优良的单层片材或两层片材适于快速热收缩以在容器或杯子周围形成标签。 突出的方法包括挤出单个泡沫片材或共挤出热塑性膜和无定形聚苯乙烯泡沫层以形成双层片材，使片材达到其取向温度，将其在取向温度下至少 提供尺寸稳定的，可存储的取向的聚苯乙烯泡沫板或热塑性膜/非晶形聚苯乙烯泡沫层片材，在定向片材上印刷以对其进行装饰，并且热收缩片材以形成最终有吸引力的装饰结构。

公开(公告)号：US4469819A

公开(公告)日：1984-09-04

申请号：US417787

申请日：1982-09-13

申请人： Guy Lemoine ,  Robert Lucas ,  Michel Vernon

发明人： Guy Lemoine ,  Robert Lucas ,  Michel Vernon

IPC分类号： C08J9/04 ,  B29C44/00 ,  B29C44/50 ,  C08G18/08 ,  C08J9/06 ,  C08J9/08 ,  B29D27/00

CPC分类号： C08J9/08 ,  B29C44/50 ,  B29C44/56 ,  B29K2027/06 ,  B29L2031/70 ,  B29L2031/706 ,  C08J2201/026 ,  C08J2327/06 ,  Y10S264/03 ,  Y10S47/10

摘要： A continuous process for making rigid PVC foam objects by extruding a preform from an initial PVC mixture, optionally cutting the preform into blanks, and expanding the preform or the blanks in water heated to a temperature above 70.degree. C. The initial mixture contains polyvinyl chloride, at least a first blowing agent capable of generating a gas, for example an isocyanate or a polyisocyanate, and at least one organic anhydride (and does not contain any added inert particles finely divided therein). The initial mixture may also contain less than one weight percent of a second blowing agent, for example azobisisobutyronitrile or azodicarbonamide. The objects produced possess heat- and sound-insulating properties.

摘要翻译： 通过从初始PVC混合物挤出预成型件，任选地将预成型坯切割成坯料，以及将预型体或坯料在加热至70℃以上的水中膨胀来制造刚性PVC泡沫体的连续方法。初始混合物含有聚氯乙烯 至少能够产生气体的第一发泡剂，例如异氰酸酯或多异氰酸酯，和至少一种有机酸酐（并且不含任何添加的惰性颗粒在其中细分）。 初始混合物还可以含有少于1重量％的第二发泡剂，例如偶氮二异丁腈或偶氮二甲酰胺。 产生的物体具有隔热和隔音性能。

公开(公告)号：US4466933A

公开(公告)日：1984-08-21

申请号：US568151

申请日：1984-01-04

申请人： Mark T. Huggard

发明人： Mark T. Huggard

IPC分类号： B29C44/08 ,  B29C51/00 ,  C08J9/08 ,  C08L67/02 ,  B29H7/20 ,  C08J9/02

CPC分类号： C08J9/08 ,  B29C44/08 ,  B29C44/50 ,  B29C44/56 ,  B29C51/002 ,  B29K2067/00 ,  B29K2067/003 ,  B29K2105/04 ,  C08J2367/02 ,  Y10S264/05 ,  Y10S521/918

摘要： There are provided methods for making heat-resistant, foamed, crystalline plastic materials. For example, polyethylene terephthalate may be foamed with a polycarbonate, extruded into a foamed sheet and this foamed sheet may be thermoformed by being subjected to crystallization annealing. The thermoformed, foamed, crystalline plastic sheets prepared by this process are particularly useful for forming light weight, ovenable food containers.

摘要翻译： 提供制造耐热，发泡，结晶塑料材料的方法。 例如，聚对苯二甲酸乙二醇酯可以用聚碳酸酯发泡，挤出成发泡片材，该发泡片材可以通过进行结晶退火而热成型。 通过该方法制备的热成型，发泡的结晶塑料片材对于形成重量轻，可烘烤的食品容器特别有用。