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公开(公告)号：US4448901A
公开(公告)日：1984-05-15
申请号：US494394
申请日：1983-05-13
申请人： Kenichi Senda , Masao Ando , Kyoichi Nakamura , Kiyoshi Mori , Tatehiko Nishida
发明人： Kenichi Senda , Masao Ando , Kyoichi Nakamura , Kiyoshi Mori , Tatehiko Nishida
CPC分类号： C08J9/18 , B29C44/3461 , C08J2203/142 , C08J2323/02 , Y10S264/09
摘要： The mixture of water and the polyolefin resin particles impregnated with a volatile blowing agent are released from the interior of the pressure-resistant container under a constant temperature and constant pressure preferably keeping the partial pressure of the blowing agent constant, through at least one orifice having an area of 0.07 to 300 mm.sup.2, into a low-pressure zone.This invention gives various advantages when applied to the practical process resulting in expanded particles with superior properties which are free of blocking and remarkably uniform in the degree of expansion, and are useful for molding.
摘要翻译： 浸渍有挥发性发泡剂的水和聚烯烃树脂颗粒的混合物在恒定温度和恒定压力下从耐压容器的内部释放，优选通过至少一个具有 面积为0.07至300平方毫米，进入低压区。 本发明在应用于实际工艺的过程中给出了各种各样的优点，从而产生具有优异性能的膨胀颗粒，其在膨胀程度上不受阻塞和显着均匀，并且可用于模制。
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公开(公告)号：US4540718A
公开(公告)日：1985-09-10
申请号：US584859
申请日：1984-02-29
申请人： Kenichi Senda , Masao Ando , Kyoichi Nakamura , Tatehiko Nishida
发明人： Kenichi Senda , Masao Ando , Kyoichi Nakamura , Tatehiko Nishida
CPC分类号： C08J9/228 , C08J9/18 , C08J2203/142 , C08J2323/02 , Y10S264/09
摘要： A pre-expanded particle suitable for foaming in a mold comprising polyolefin which has a characteristic property that an inclination of slope line obtained on a graph when logarithmic values of melt tension of the polyolefin are plotted as ordinate and reciprocals of absolute temperature at which the melt tension is measured are plotted as abscissa is less than 1,500 is provided. A foamed article produced from the pre-expanded particles has an excellent appearance, a flat surface and good mechanical strength, and is useful for wrapping material, insulating material, a container or a fender of cars.A process for preparing the above-mentioned pre-expanded particles is also disclosed.
摘要翻译： 适用于在包含聚烯烃的模具中发泡的预发泡颗粒，其具有以下特征：当聚烯烃的熔体张力的对数值作为纵坐标和绝对温度的倒数绘制时，在曲线图上获得的斜率线的倾斜度为特征， 测量的张力绘制为横坐标小于1,500。 由预发泡颗粒制成的发泡制品具有优异的外观，平坦的表面和良好的机械强度，并且可用于包装材料，绝缘材料，容器或汽车挡泥板。 还公开了制备上述预发泡颗粒的方法。
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3.发明授权
公开(公告)号：US4617322A
公开(公告)日：1986-10-14
申请号：US748803
申请日：1985-06-26
申请人： Kenichi Senda , Masao Ando , Kyoichi Nakamura , Tatehiko Nishida
发明人： Kenichi Senda , Masao Ando , Kyoichi Nakamura , Tatehiko Nishida
CPC分类号： C08J9/228 , C08J9/18 , C08J2203/142 , C08J2323/02 , Y10S264/09
摘要： A pre-expanded particle suitable for foaming in a mold comprising non-crosslinked linear low density polyethylene which has a characteristic property that an inclination of slope line obtained on a graph when logarithmic values of melt tension of the polyolefin are plotted as ordinate and reciprocals of absolute temperature at which the melt tension is measured are plotted as abscissa is not more than 1,500 is provided. A foamed article produced from the pre-expanded particles has an excellent appearance, a flat surface and good mechanical strength, and is useful for wrapping material, insulating material, a container or a fender of cars.
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4.发明授权Pre-expanded particles of polypropylene resin, process for producing the same and process for producing in-mold foamed articles therefrom 失效聚丙烯树脂的预发泡粒子，其制造方法以及由其制造模内发泡制品的方法
公开(公告)号：US6166096A
公开(公告)日：2000-12-26
申请号：US573339
申请日：2000-05-18
CPC分类号： C08J9/0061 , C08J9/18 , C08J9/232 , C08J2203/14 , C08J2323/10 , C08J2423/00 , C08L23/10 , C08L2205/02 , C08L2666/04
摘要： A pre-expanded particle made of a blend of 10 to 90% by weight of a polypropylene resin having a melt index of 6 to 10 g/10 minutes and 90 to 10% by weight of a polypropylene resin having a melt index of 0.5 to 3 g/10 minutes. The melt index of the blend being within the range of 2 to 5 g/10 minutes. The pre-expanded particles can be molded by an in-mold foaming method in a short time without causing sink to give polypropylene resin cellular molded articles having good surface property and good melt adhesion of the particles.
摘要翻译： 由10〜90重量％的熔融指数为6〜10g / 10分钟的聚丙烯树脂和90〜10重量％的熔融指数为0.5〜10:1的聚丙烯树脂的共混物制成的预发泡粒子 3 g / 10分钟。 共混物的熔体指数在2〜5g / 10分钟的范围内。 预发泡颗粒可以通过模内发泡方法在短时间内模制而不会产生凹陷，从而得到具有良好的表面性能和良好的熔融粘附性的聚丙烯树脂细胞模塑制品。
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5.发明授权公开(公告)号：US06576179B1
公开(公告)日：2003-06-10
申请号：US09613283
申请日：2000-07-10
申请人： Masaharu Abe , Hiroshi Yamamoto , Kyoichi Nakamura
发明人： Masaharu Abe , Hiroshi Yamamoto , Kyoichi Nakamura
IPC分类号： B29C4554
CPC分类号： B29C45/542 , B29C45/50 , B29C2045/466
摘要： An injection-molding process including kneading functional particles with a binder resin in a kneader, temporarily storing the kneaded material supplied from the kneader in a reservoir device and feeding the kneaded material stored in the reservoir device to an injection device, the reservoir device including a pair of reservoirs, the kneaded material stored in one reservoir device is fed to the injection device where the kneaded material is then injection-molded, and simultaneously the kneaded material is fed from the kneader to another reservoir device and stored in it. Then, the kneaded material stored in the other reservoir device is fed to the injection device where the kneaded material is then injection-molded, and simultaneously the kneaded material is fed from the kneader to the one reservoir device and stored in it, so that the injection molding process is conducted by alternately repeating the above steps by switching operations. This injection-molding process is capable of producing a molded product of uniform quality by preventing feed pressure of the kneaded material fed to an injection device from being transmitted to the kneader.
摘要翻译： 一种注射成型方法，包括在捏合机中将功能性颗粒与粘合剂树脂捏合，将从捏合机供给的捏合材料临时储存在储存装置中，并将储存在储存装置中的捏合材料进料到注射装置，该储存装置包括 存储在一个贮存器中的捏合物料被供给到注射装置，在该注入装置中捏合的材料然后被注射成型，同时将捏合的材料从捏合机进料到另一储存装置并储存在其中。 然后，将存储在另一个储存装置中的捏合物供给到注射装置，在该装置中捏合材料然后注射成型，同时将捏合材料从捏合机供给到一个储存装置并储存在其中， 通过切换操作交替重复上述步骤进行注射成型工艺。 这种注射成型工艺能够通过防止供给到注射装置的捏合材料的进料压力传递到捏合机来产生质量均匀的模制产品。
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公开(公告)号：US6042757A
公开(公告)日：2000-03-28
申请号：US84921
申请日：1998-05-28
CPC分类号： B29C45/4225 , B29C45/0013 , B29C45/7207
摘要： An injection-molding device including an injection machine, a mold unit connected to the injection machine having separable molds defining a cavity for forming a molded product, and chucks next to the mold unit for removing a molded product from the mold. The molded product is initially coolied in the mold cavity then again cooled after removal from the mold unit. Plural chucks are advanced into and retreated from a region defined by the open molds, the chucks being a pair of blocks grasping the surface of the molded product, each block having a circulating path through which a heating medium is passed to cool the grasping surface. The injection-molding apparatus produces articles having high dimensional accuracy, for example, electronic parts such as a magnet roll or the like.
摘要翻译： 一种注射成型装置，包括注射机，连接到注射机的模具单元，其具有限定用于形成模制产品的空腔的可分离模具，以及紧靠模具单元卡住从模具中移出模制产品。 模制产品最初在模腔中冷却，然后在从模具单元移除之后再次冷却。 多个卡盘从由开放模具限定的区域前进和退出，卡盘是抓握模制产品表面的一对块，每个块具有循环路径，加热介质通过该循环路径来冷却抓握表面。 注射成型装置生产具有高尺寸精度的制品，例如电磁部件如磁辊等。
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公开(公告)号：US4748191A
公开(公告)日：1988-05-31
申请号：US8885
申请日：1987-01-30
申请人： Kyoichi Nakamura
发明人： Kyoichi Nakamura
CPC分类号： B29C44/3461 , B29K2023/00
摘要： In a process for preparing pre-expanded particles of a thermoplastic resin which comprises releasing into a low pressure zone an aqueous dispersion of thermoplastic resin particles containing a volatile blowing agent, the dispersion being maintained at an elevated temperature under pressure in a pressure vessel, the improvement which comprises releasing the dispersion through an orifice having a ratio of the length to the average diameter of 4 to 100. According to the present invention, the pre-expanded particles having cells which are uniform in diameter and have an average dimeter of not less than 200 .mu.m can be obtained, and therefore the articles molded in a mold from the pre-expanded particles are small in the shrinkage and strain, are excellent in the appearance, and are increased in the productivity. Accordingly, the molded articles are utilizable for use of shock absorbing, wrapping materials or structural material such as impact-absorbing materials for cars which requires excellent dimensional precision and heat insulating building materials.
摘要翻译： 在制备热塑性树脂的预发泡颗粒的方法中，其包括将包含挥发性发泡剂的热塑性树脂颗粒的水分散体释放到低压区域，所述分散体在压力容器中在升高的温度下保持在压力下， 改进包括通过具有长度与平均直径之比为4至100的孔口释放分散体。根据本发明，具有直径均匀且平均粒径小于等于10埃的细孔的预发泡颗粒 可以获得200μm以上，因此，从预发泡粒子在模具中成型的制品的收缩和应变小，外观优异，生产率提高。 因此，模制品可用于减震，包装材料或结构材料，例如需要优异的尺寸精度和隔热建筑材料的汽车冲击吸收材料。
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8.发明授权Polypropylene resin pre-expanded beads, manufacturing method thereof and expansion-molding method using said beads 失效聚丙烯树脂预发泡珠，其制造方法和使用所述珠的膨胀成型方法
公开(公告)号：US4931477A
公开(公告)日：1990-06-05
申请号：US282137
申请日：1988-12-09
申请人： Hitoshi Shiiki , Minoru Tada , Kyoichi Nakamura
发明人： Hitoshi Shiiki , Minoru Tada , Kyoichi Nakamura
CPC分类号： C08J9/228 , C08J2323/10 , C08L23/10 , Y10S264/07 , Y10S264/09 , Y10S264/16
摘要： The present invention provides polypropylene resin pre-expanded beads formed by shrinking polypropylene resin pre-expanded beads originally having a bulk density of not higher than 0.0930 g/cc to give then a bulk volume ratio of 10-75% at the normal temperature and the normal pressure, a manufacturing method thereof and an expansion-molding method with the aforementioned pre-expanded beads. According to this invention, it is possible to greatly reduce storing and transporting costs per unit weight of pre-expanded beads.
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公开(公告)号：US4720509A
公开(公告)日：1988-01-19
申请号：US53662
申请日：1987-05-26
申请人： Kyoichi Nakamura
发明人： Kyoichi Nakamura
CPC分类号： C08J9/228 , C08J9/18 , C08J2323/10 , C08L23/10 , Y10S264/09 , Y10S264/16
摘要： A pre-expanded particle of a propylene resin having two melting temperatures as determined by DSC, the heat of fusion for the peak based on the higher melting temperature being 0.5 to 2.3 cal/g. By using the pre-expanded particles of the propylene resin of the invention, foamed articles having excellent surface appearance, small dimentional shrinkage can be easily obtained without the procedure for giving the internal pressure.
摘要翻译： 通过DSC测定的具有两个熔融温度的丙烯树脂的预发泡颗粒，基于较高熔融温度的峰的熔化热为0.5-2.3cal / g。 通过使用本发明的丙烯树脂的预发泡粒子，可以容易地获得具有优异的表面外观，小的收缩率的发泡制品，而不需要提供内部压力的程序。
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公开(公告)号：US4687641A
公开(公告)日：1987-08-18
申请号：US720820
申请日：1985-04-08
CPC分类号： B29C44/3461 , C08J11/02 , C08J9/228 , Y10S264/09
摘要： A process and apparatus for preparing pre-expanded particles of a thermoplastic resin which comprises; heating under an elevated pressure an aqueous dispersion comprising thermoplastic resin particles containing a volatile foaming agent and an aqueous medium in a pressure vessel; releasing the dispersion from the pressure vessel into a space within a sealed low-pressure vessel wherein the pressure is lower than that in the pressure vessel, whereby expanding the thermoplastic resin particles to give pre-expanded particles; and simultaneously recovering the foaming agent volatilized from the thermoplastic resin particles by discharging the foaming agent out of the space in the low-pressure vessel with controlling the pressure in the low-pressure vessel to substantially a given pressure. According to the process, the release of the volatile foaming agent into the air is prevented.
摘要翻译： 一种制备热塑性树脂预发泡颗粒的方法和装置，包括： 在高压下加热包含在压力容器中含有挥发性发泡剂和水性介质的热塑性树脂颗粒的水分散体; 将分散体从压力容器释放到密封的低压容器内的空间，其中压力低于压力容器中的压力，由此使热塑性树脂颗粒膨胀以产生预发泡颗粒; 同时通过将低压容器内的压力控制在基本给定的压力下，将发泡剂从低压容器的空间排出，同时回收从热塑性树脂颗粒挥发的发泡剂。 根据该方法，可以防止挥发性发泡剂向空气中的释放。
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