公开(公告)号：US4218203A

公开(公告)日：1980-08-19

申请号：US7252

申请日：1979-01-29

申请人： Peter J. Tilgner

发明人： Peter J. Tilgner

IPC分类号： B29C33/36 ,  B29C44/38 ,  B29D27/00 ,  B29G3/00

CPC分类号： B29C44/388 ,  B29C33/36 ,  B29L2031/7622

摘要： Multi-station reaction injection molding apparatus is disclosed for in-place foaming of polymerizable resins in articles advanced along a production line, as for example in the manufacture of insulated appliance housings such as refrigerator cabinets. The articles are selectively diverted from a feed conveyor, one to each of a plurality of pour stations adjacent the feed conveyor. At the stations, injection of foamable resin mix is accomplished by reaction injection type molding heads which combine at least two liquid resin components. These components are suitably catalyzed to react and form a cellular or foamed polymerized resin. The liquid components are separately but continuously supplied to respective supply manifolds to which all of the heads are connected in parallel by shunting ducts. Excess unmixed liquid components are returned separately from each of the heads through recycle shunting ducts to respective recycle manifolds. Thus division of the component flows takes place among all of the heads, whereby to maintain temperature and compositional uniformity of the components as close to the point of mixing and injection as possible. Control means selectively determine the order in which each pour station injects foam mix into an article. That same control further produces a metered output of the respective components at elevated pressure sufficient to effect reaction injection mixing at the selected head, while simultaneously interrupting the flow of all components at all of the other heads. Reduction of off-ratio mixing problems, and greater uniformity of foam properties, are thus achieved.

摘要翻译： 公开了一种多工位反应注射成型装置，用于在沿着生产线推进的制品中的可聚合树脂的就地发泡，例如在诸如冷藏柜的绝热设备外壳的制造中。 物品被选择性地从进料输送机转移到与进料输送机相邻的多个倾倒站中的一个。 在工位上，通过将至少两种液体树脂组分组合的反应注射型成型头来实现可发泡树脂混合物的注入。 适当地催化这些组分以反应并形成多孔或发泡的聚合树脂。 液体组件分开但连续地供应到各个供给歧管，所有的头部通过分流管道并联连接。 过多的未混合的液体组分通过再循环分流管道从每个头部分开返回到相应的再循环歧管。 因此，在所有头部之间进行部件流动的划分，从而将组件的温度和组成均匀性保持为尽可能接近混合和注入的点。 控制装置选择性地确定每个倾倒站将泡沫混合物注入制品的顺序。 该相同的控制进一步在升高的压力下产生相应部件的计量输出，足以在所选择的头处产生反应注入混合，同时中断所有其它头部处的所有部件的流动。 从而实现了脱比混合问题的减少和泡沫性能的均匀性的提高。

公开(公告)号：US4167552A

公开(公告)日：1979-09-11

申请号：US834264

申请日：1977-09-19

申请人： Tadahiko Hayashi

发明人： Tadahiko Hayashi

IPC分类号： C08L67/00 ,  B29B9/00 ,  B29C43/00 ,  B29C45/00 ,  C08F2/00 ,  C08J3/12 ,  C08J5/24 ,  C08J7/04 ,  C08L67/06 ,  B29G3/00

CPC分类号： B29B9/00 ,  B29C70/28

摘要： A thermosettable resin molding compound for pressure-molding comprises a relatively thin nontacky coat formed on a surface of a solid molding composition comprising a liquid thermosettable resin and a filler.

摘要翻译： 用于加压成型的热固性树脂模塑料包括形成在包含液体可热固化树脂和填料的固体模塑组合物的表面上的相对薄的非粘性涂层。

公开(公告)号：US4159298A

公开(公告)日：1979-06-26

申请号：US764965

申请日：1977-02-02

申请人： Dean R. Bainard

发明人： Dean R. Bainard

IPC分类号： B29B15/00 ,  B29C31/00 ,  B29C33/00 ,  B29C35/00 ,  B29C43/00 ,  B29C43/02 ,  B29C43/18 ,  B29C45/00 ,  B29C45/14 ,  B29C65/00 ,  B29C70/68 ,  B29D99/00 ,  F16J15/32 ,  B29D3/00 ,  B29D23/01 ,  B29G3/00 ,  B29H9/10

CPC分类号： B29C70/68 ,  B29C43/18 ,  B29C45/14778 ,  B29D99/0053 ,  B29C2043/3634 ,  B29K2027/18 ,  B29K2621/00 ,  B29L2031/26 ,  Y10S277/924 ,  Y10S425/047 ,  Y10T29/4998

摘要： A method for making a shaft seal of the type including an elastomeric body and a polytetrafluoroethylene sealing element comprising inserting a metal shell (if employed in the seal), a synthetic rubber blank prep form and a polytetrafluoroethylene sealing element into a transfer or compression mold, and then closing the mold to simultaneously form a sealing lip portion of the polytetrafluoroethylene sealing element into the desired shape, mold the rubber into the desired shape and bond the rubber to the shell (if used) and to the anchor portion of the polytetrafluoroethylene sealing element.

摘要翻译： 一种用于制造包括弹性体和聚四氟乙烯密封元件的轴密封件的方法，包括将金属外壳（如果用于密封件中），合成橡胶坯料预制件和聚四氟乙烯密封元件插入转移或压缩模具中， 然后关闭模具以同时将聚四氟乙烯密封元件的密封唇部形成为所需形状，将橡胶模制成所需形状并将橡胶结合到壳体（如果使用的话）和聚四氟乙烯密封元件的锚定部分 。

公开(公告)号：US4137033A

公开(公告)日：1979-01-30

申请号：US819161

申请日：1977-07-26

申请人： Anthony G. Goodfellow

发明人： Anthony G. Goodfellow

IPC分类号： B29D30/06 ,  B29D30/08 ,  B29D30/52 ,  B29H3/10 ,  B29G3/00 ,  B29H5/02

CPC分类号： B29D30/52 ,  B29D30/0678 ,  B29D30/08

摘要： A pneumatic tire is moulded using a mould core of cured rubber the radial sectional shape of which is the same as the internal radial sectional configuration of the finished tire. The opposite sides of the core are supported by fitting plates while a tread portion of tire is moulded onto the exposed outer periphery of the core. Thereafter the side plates are removed in turn and replaced by sidewall mould halves enabling sidewalls to be moulded against the core in contact with the tread portion.

摘要翻译： 使用固化橡胶的模芯，其径向截面形状与成品轮胎的内部径向截面形状相同，来模制充气轮胎。 芯的相对侧由配合板支撑，而轮胎的胎面部分模制到芯的暴露的外周上。 此后，侧板被依次拆下并由侧壁半模替代，使得侧壁能够相对于与胎面部分接触的芯部模制。

公开(公告)号：US4131667A

公开(公告)日：1978-12-26

申请号：US684132

申请日：1976-05-07

申请人： John A. Lovell ,  Donald V. Hillegass ,  Philip G. Harris

发明人： John A. Lovell ,  Donald V. Hillegass ,  Philip G. Harris

IPC分类号： B29C33/38 ,  B29C33/40 ,  B29C45/00 ,  C08K3/00 ,  B29C1/02 ,  B29G3/00

CPC分类号： C08K3/0033 ,  B29C33/3857 ,  B29C33/40 ,  B29C45/00 ,  B29K2075/00 ,  B29K2875/00 ,  Y10S264/77

摘要： Method of preparing polyurethane composite mold by injecting a composite reaction mixture onto a master form in a mold cavity, curing said reaction composite and removing it from the master form in a step-wise process involving a pressure manipulation. Said composite comprises 100 parts by weight inorganic water insoluble inert granular material and about 50 to about 200 parts by weight liquid polyurethane reaction mixture substantially free of volatile solvents.

摘要翻译： 通过在模腔中将复合反应混合物注射到母模上来固化聚合物复合模具的方法，固化所述反应复合物并且以包括压力操纵在内的逐步方法将其从母模中除去。 所述复合材料包含100重量份的无机水不溶性惰性颗粒材料和约50至约200重量份基本上不含挥发性溶剂的液体聚氨酯反应混合物。

公开(公告)号：US4078037A

公开(公告)日：1978-03-07

申请号：US749339

申请日：1976-12-10

申请人： Brian Leo Chudleigh Sutch

发明人： Brian Leo Chudleigh Sutch

IPC分类号： B29C45/14 ,  B65D5/20 ,  B29D9/00 ,  B29G3/00

CPC分类号： B65D5/209 ,  B29C45/14475 ,  B29C2045/0027

摘要： A method of making a container, particularly a rectangular tray-like container, in which a blank is provided having side panels which are displaced to form the side walls of the container. The blank is clamped in its container - forming shape between mould tools with adjacent ends of the side panels juxtaposed end corner seams and a lip are injection moulded to seam the side panels and form a peripheral lip on the free edges of the side panels remote from the base panel. The mould tools shape the free edges of the side panels to an internally concave form between the juxtaposed side panel ends before moulding so that shrinkage of the moulding will accentuate the concavity to give a predetermined consistent shape to containers so produced and avoid unpredictable buckling and deformity.

摘要翻译： 一种制造容器，特别是矩形托盘状容器的方法，其中设有坯料，其具有位移以形成容器的侧壁的侧板。 坯料被夹紧在其模具之间形成模具，侧板的相邻端部并排端角接缝，并且注射模制唇缘以接合侧板并在远离的侧板的自由边缘上形成周边唇缘。 基板。 在模制之前，模具工具将侧板的自由边缘形成在并置的侧板端之间的内凹形状，使得模制件的收缩将突出凹部以给予如此生产的容器预定的一致形状，并避免不可预测的弯曲和变形 。

公开(公告)号：US4076570A

公开(公告)日：1978-02-28

申请号：US525480

申请日：1974-11-20

申请人： Ronald D. Medley ,  James R. Chapman

发明人： Ronald D. Medley ,  James R. Chapman

IPC分类号： B29C47/06 ,  B32B27/08 ,  B29G3/00

CPC分类号： B32B27/08 ,  B29C47/0019 ,  B29C47/065 ,  B29C47/145 ,  B29C47/0021 ,  Y10T428/3192

摘要： Disclosed is a process for producing a laminate having at least three layers comprising a base layer of polystyrene, an intermediate layer of an ABS polymer and a third barrier layer of a vinyl chloride or vinylidene chloride polymer comprising the steps of co-extruding through a single die orifice a heat plastified composite structure comprising a base layer of polystyrene and a surface layer of an ABS polymer and thereafter laminating a preformed layer of a barrier material polymer to the ABS surface layer of the co-extruded composite.

摘要翻译： 公开了一种制备具有至少三层的层压板的方法，其中包括聚苯乙烯的基层，ABS聚合物的中间层和氯乙烯或偏二氯乙烯聚合物的第三阻挡层，包括以下步骤：通过单一共挤出 模头孔包括热塑化复合结构，其包括聚苯乙烯的基层和ABS聚合物的表面层，然后将预制的阻隔材料聚合物层层压到共挤出复合材料的ABS表面层。

公开(公告)号：US4035467A

公开(公告)日：1977-07-12

申请号：US634167

申请日：1975-11-21

申请人： Gregory A. Campbell ,  Howard W. Cox ,  William C. Meluch

发明人： Gregory A. Campbell ,  Howard W. Cox ,  William C. Meluch

IPC分类号： B29C45/00 ,  B29C67/24 ,  C08G18/08 ,  C08G18/78 ,  B29G3/00

CPC分类号： C08G18/08 ,  B29C45/0001 ,  B29C67/246 ,  C08G18/7825 ,  Y10S264/77

摘要： In accordance with a preferred embodiment of this invention, a controlled phase change is used to trigger an exothermic polymerization reaction in an injection molding process. The subject method comprises first, dispersing a crystalline urea reactant, 1,3-bis-(3-isocyanatotolyl) urea, in a liquid polyoxyalkylene polyol or mixtures thereof. Since the polyols do not dissolve the urea at room temperature, the dispersion is storage stable over an extended period of time. This is unexpected because the isocyanate and hydroxyl functionalities are normally quite reactive. In the barrel of the injection molding machine, the dispersion is heated to a temperature at which the polyol will begin to dissolve and thereby react with the crystalline urea to initiate a controllable polyurethane-forming reaction. At present, the specific urea disclosed above is preferred because of its ability to (1) form a storage stable dispersion, (2) dissolve in the polyol at a temperature below its decomposition temperature, and (3) react with the polyol at controllable rates once it has dissolved. All three properties are important to this invention and they enable the practitioner to use conventional injection molding equipment.

摘要翻译： 根据本发明的优选实施方案，使用受控相变来引发注射成型工艺中的放热聚合反应。 本发明的方法包括首先将结晶尿素反应物，1,3-双（3-异氰酸基吗啉基）脲分散在液体聚氧化烯多元醇或其混合物中。 由于多元醇在室温下不溶解尿素，所以分散体在长时间内保持稳定。 这是意想不到的，因为异氰酸酯和羟基官能团通常是相当反应的。 在注射成型机的桶中，将分散体加热到多醇开始溶解的温度，从而与结晶尿素反应以引发可控的聚氨酯形成反应。 目前，上述特定的尿素是优选的，因为它能够（1）形成储存稳定的分散体，（2）在低于其分解温度的温度下溶于多元醇，和（3）以可控速率与多元醇反应 一旦解散了 所有三种性质对于本发明是重要的，并且它们使得从业者能够使用传统的注塑设备。

公开(公告)号：US4006642A

公开(公告)日：1977-02-08

申请号：US550472

申请日：1975-02-18

申请人： Eduard Hartmann

发明人： Eduard Hartmann

IPC分类号： B22D17/20 ,  B29C45/80 ,  G01B7/14 ,  G01P13/00 ,  B29G3/00

CPC分类号： G01B7/14 ,  B29C45/80

摘要： A measuring apparatus for a multi-part injection mold for measuring the degree of filling of the hollow mold compartment with plastic material or the closure pressure of the mold comprising a distance measuring transmitter coupled with one part of the mold and responsive to changes in the mold gap formed between the one mold part and another mold part. The coupling location of the distance measuring transmitter at the one mold part is arranged in spaced relationship from the separation or parting plane of the mold.

摘要翻译： 一种多部分注射模具的测量装置，用于利用塑料材料测量中空模具室的填充程度或模具的闭合压力，包括距离测量传感器，其与模具的一部分耦合并且响应于模具的变化 在一个模具部件和另一个模具部件之间形成的间隙。 距离测量传感器在一个模具部分处的耦合位置与模具的分离或分离平面间隔开。

公开(公告)号：US4006210A

公开(公告)日：1977-02-01

申请号：US648169

申请日：1976-01-12

申请人： Dennis N. Denton

发明人： Dennis N. Denton

IPC分类号： B29C45/14 ,  B29D99/00 ,  B29C5/00 ,  B29D3/00 ,  B29G3/00 ,  B29H9/00

CPC分类号： B29C45/14336 ,  B29C45/14836 ,  B29D99/0053 ,  B29K2021/00 ,  B29K2705/00 ,  B29L2031/26 ,  Y10S425/047

摘要： A seal of the type having a metal shell with a cylindrical flange and with an elastomeric O.D. is transfer molded by positioning the cylindrical flange of the shell in a seal-forming cavity of the transfer mold such that it is directly axially in-line with the sprue holes of the mold, whereby the flow of elastomer into the cavity is split by the cylindrical flange into two streams, one adjacent the I.D. and one adjacent the O.D. of the cylindrical flange such that the fluid pressure against the cylindrical flange is equalized and distortion of the shell is substantially reduced or eliminated.

摘要翻译： 该类型的密封件具有带有圆柱形凸缘并且具有弹性体O.D的金属外壳。 通过将壳体的圆柱形凸缘定位在转移模具的密封形成腔中，使得其直接与模具的浇道孔轴向成一直线，从而将弹性体流入空腔中，将其分开 圆柱形法兰成两个流，一个相邻的ID 和一个相邻的O.D. 使得相对于圆柱形凸缘的流体压力相等并且壳体的变形被显着地减小或消除。