Mixing apparatus combined with a molding tool
    1.
    发明授权
    Mixing apparatus combined with a molding tool 失效
    混合装置结合成型工具

    公开(公告)号:US4013391A

    公开(公告)日:1977-03-22

    申请号:US558515

    申请日:1975-03-14

    摘要: An apparatus for mixing and molding a chemically foamable reaction mixture is comprised of a mold with a mixing chamber which has its outlet aperture in a wall of the mold and a displacement piston mounted in the opposite wall. An ejector piston is displaceable within the mix chamber and may be so channelled as to serve as a control piston. This ejector piston is displaceable from a position wherein the injection apertures lie between it and the mold cavity to a position wherein its end surface is flush with the mold wall. The displacement piston is so mounted that it may extend across the mold cavity and intrude into the outlet aperture of the mixing chamber. This displacement piston has a diameter smaller than the diameter of those portions of the mixing chamber into which it protrudes so that when this piston is within the mixing chamber an annular cavity is formed between it and the side walls of the mixing chamber. It is withdrawable to a position flush with the mold wall it protrudes through. This piston may comprise a hollow sleeve and a core which together form a cavity when the sleeve is disposed in the mixing chamber. This piston may be mounted in a mold wall insert which can be moved toward the opposite mold wall to locally decrease the mold cavity width. The mix chamber and displacement piston may also be mounted in opposite walls of a sprue system which communicates with a mold cavity or mold cavities.

    摘要翻译: 用于混合和模塑化学可发泡反应混合物的装置包括具有混合室的模具,该混合室在模具的壁中具有出口孔,并且安装在相对壁中的置换活塞。 喷射器活塞可在混合室内移动,并且可以如此引导以用作控制活塞。 该喷射器活塞可从其中注射孔位于其与模腔之间的位置移动到其端面与模具壁齐平的位置。 位移活塞被安装成可以延伸穿过模腔并且侵入到混合室的出口孔中。 该位移活塞的直径小于其突出的混合室的那些部分的直径,使得当该活塞在混合室内时,在其与混合室的侧壁之间形成环形空腔。 它可抽出到与其突出的模具壁齐平的位置。 该活塞可以包括中空套筒和芯部,当套筒设置在混合室中时,它们一起形成空腔。 该活塞可以安装在模具壁插入件中,该模具壁插入件可以朝着相对的模具壁移动以局部地减小模腔宽度。 混合室和置换活塞也可以安装在与模腔或模腔连通的浇口系统的相对壁中。

    Apparatus for dosing and mixing fluid reactants
    2.
    发明授权
    Apparatus for dosing and mixing fluid reactants 失效
    用于计量和混合流体反应物的装置

    公开(公告)号:US4030637A

    公开(公告)日:1977-06-21

    申请号:US656234

    申请日:1976-02-09

    摘要: This invention relates to an apparatus for dosing and mixing at least two fluid reactants consisting of a dosing unit; a mixing head and conduits connecting the dosing unit and mixing head; characterized in that the housing of the dosing unit and the mixing head together form a rigid block with the conduits connecting the dosing cylinder with the mixing chamber in the form of channels inside the block.

    摘要翻译: 本发明涉及一种用于计量和混合至少两种由计量单元组成的流体反应物的设备; 混合头和连接给料单元和混合头的管道; 其特征在于,配料单元和混合头的壳体一起形成刚性块,其中管道将配量缸与混合室连接在块内的通道形式。

    Process for molding foamed plastics from reaction mixtures involving
closed mold filling with the avoidance of gas bubble entrainment
    3.
    发明授权
    Process for molding foamed plastics from reaction mixtures involving closed mold filling with the avoidance of gas bubble entrainment 失效
    用于通过闭合模具填充的反应混合物模制泡沫塑料的方法,以避免气泡夹带

    公开(公告)号:US3991147A

    公开(公告)日:1976-11-09

    申请号:US506144

    申请日:1974-09-16

    摘要: A process for molding foam products substantially free from flaws caused by air bubbles in the foamable reaction mixture wherein a foamable reaction mixture having a viscosity .eta. in cP between 100 cP and 2500 cP is introduced into a mold cavity through an opening in the mold wall and against the wall of the cavity opposite the opening of a mold in which the thickness of the cavity and the thickness s of the resulting molded product adjacent to the opening at the time the mixture is introduced into the cavity is maintained at 0.5 mm to 15 mm under conditions whereby the radial distribution rate w.sub.radial in m/sec., .eta. in cP and s combine to satisfy the relation ##EQU1##

    摘要翻译: 一种用于模制泡沫产品的方法,其基本上没有由可发泡反应混合物中的气泡引起的瑕疵,其中具有cP值在100cP和2500cP之间的具有cP粘度的可发泡反应混合物通过模具壁中的开口引入模腔中, 抵靠与模具开口相对的腔的壁,其中空腔的厚度和在混合物被引入空腔时与开口相邻的所得模制产品的厚度保持在0.5mm至15mm 在cP和s中的等于或等于m /秒的径向分布速率组合以满足关系式(m / sec)的条件下。 s(mm)=

    Apparatus for producing molded foam articles without defects
    4.
    发明授权
    Apparatus for producing molded foam articles without defects 失效
    用于生产没有缺陷的模制泡沫制品的装置

    公开(公告)号:US3982870A

    公开(公告)日:1976-09-28

    申请号:US558516

    申请日:1975-03-14

    IPC分类号: B01F5/00 B29C33/00 B29D27/00

    CPC分类号: B29C33/0072 Y10S264/83

    摘要: Apparatus to practice the method of forming foam molded articles without the defects caused by incompletely mixed reactants in the mold cavity is provided. A mixing chamber bounded by a sidewall portion having injection apertures, an outlet aperture which communicates with the mold cavity and a first ejector piston displaceable within the bore of the mixing chamber is provided. Opposite said outlet aperture is a second ejector piston which is retracted at the start of the mold filling operation to provide a receiving chamber in the mold wall. As the mold filling proceeds, this piston is displaced towards the mold cavity until its end surface forms a planar surface with the mold wall. Optionally, this piston may be displaced into the mold cavity to eject the molded article.

    摘要翻译: 提供了在模具腔中不发生由不完全混合的反应物引起的缺陷来实施形成泡沫模塑制品的方法的装置。 提供了由具有注射孔的侧壁部分限定的混合室,与模腔连通的出口孔和可在混合室的孔内移位的第一顶出活塞。 相对的,所述出口孔是在模具填充操作开始时缩回的第二顶出活塞,以在模具壁中提供接收室。 当模具填充进行时,该活塞朝向模腔移动,直到其端面与模具壁形成平坦的表面。 可选地,该活塞可以移动到模腔中以喷射模制品。

    Process for providing mixed foamable reactants to a mold
    5.
    发明授权
    Process for providing mixed foamable reactants to a mold 失效
    将混合的可发泡反应物提供到模具的方法

    公开(公告)号:US4129636A

    公开(公告)日:1978-12-12

    申请号:US742937

    申请日:1976-11-18

    IPC分类号: B29B7/74 B29C33/00 B29D27/00

    摘要: A process is provided for introducing mixed foamable reactants to a mold. The process involves introducing the reactants into a mixing chamber through injection apertures in its side wall portion. The mixing chamber has an outlet aperture communicating with the cavity of the mold. Prior to introducing the reactants into the mixing chamber, a displacement piston having a smaller cross-section than the mixing chamber is inserted into the outlet aperture of the mixing chamber so that the injection apertures communicate with the mold cavity by means of a generally annular passage.

    摘要翻译: 提供了将混合的可发泡反应物引入模具的方法。 该方法包括通过其侧壁部分中的注入孔将反应物引入混合室。 混合室具有与模具的腔连通的出口孔。 在将反应物引入混合室之前,将具有比混合室更小的横截面的置换活塞插入到混合室的出口孔中,使得注射孔通过大致环形通道与模腔连通 。

    Process for the production of molded articles having integral skin
    6.
    发明授权
    Process for the production of molded articles having integral skin 失效
    用于生产具有整体皮肤的模制品的方法

    公开(公告)号:US4576970A

    公开(公告)日:1986-03-18

    申请号:US703844

    申请日:1985-02-21

    摘要: The present invention is directed to a process for the production of a molded article having a compact surface layer and a gross density above 900 kg/m.sup.3 via the reaction injection molding technique, comprising introducing a reaction mixture into a closed mold, said reaction mixture comprising:(a) a polyisocyanate component consisting of at least one polyisocyanate in which all the isocyanate groups are aromatically bound,(b) compounds having molecular weights of from 400 to 12,000 and having at least two isocyanate reactive hydrogen atoms,(c) water, in a quantity of at least 0.15 mol per mol of isocyanate groups of component (a), and(d) optionally compounds having molecular weights of from 60 to 399 and having at least two isocyanate reactive hydrogen atoms,wherein the isocyanate index, based on all the reactants taking part in the reaction is from 70 to 125, and wherein a pressure of above 40 bar is maintained in the reaction mixture during the reaction so that the carbon dioxide formed in the course of the reaction remains completely or predominantly in solution in the reaction mixture and in the molded article produced.

    摘要翻译: 本发明涉及通过反应注射成型技术生产具有紧密表面层和总密度高于900kg / m 3的模塑制品的方法,包括将反应混合物引入封闭模具中,所述反应混合物包含 (a)由至少一种多异氰酸酯组成的多异氰酸酯组分,其中所有异氰酸酯基团都被芳族结合,(b)分子量为400至12,000并具有至少两个异氰酸酯反应性氢原子的化合物,(c)水, 每摩尔组分(a)的异氰酸酯基团至少为0.15摩尔的量,和(d)任选分子量为60至399的具有至少两个异氰酸酯反应性氢原子的化合物,其中异氰酸酯指数基于 参与反应的所有反应物均为70〜125,在反应中反应混合物中保持40巴以上的压力,使二氧化碳 在反应过程中形成的反应完全或主要存在于反应混合物和所制备的模制品中的溶液中。

    Process for the production of a lightfast and colorfast composite
plastic part
    7.
    发明授权
    Process for the production of a lightfast and colorfast composite plastic part 失效
    生产耐光和耐色复合塑料部件的工艺

    公开(公告)号:US4539166A

    公开(公告)日:1985-09-03

    申请号:US491692

    申请日:1983-05-05

    摘要: A first reaction mixture, prepared from (a) aromatic isocyanates with isocyanate contents of from 5 to 50%, and (b) compounds with molecular weights of from 32 to 10,000 which contain at least two isocyanate-reactive hydrogen atoms, in an equivalent ratio of component "a" to component "b" of 0.8:1 to 5:1, from 0.1 to 20% of a blowing agent and, optionally, other known additives, is introduced into a closed mold with a rigid cavity. After this mixture has become resistant to permeation, but is still compressible, a second reaction mixture, prepared from (c) aliphatic and/or cycloaliphatic polyisocyanates having isocyanate contents of from 5 to 50% and (d) compounds with molecular weights of from 32 to 10,000 which contain at least two isocyanate-reactive hydrogen atoms, in an equivalent ratio of component "c" to component "d" of from 0.8:1 to 5:1, an internal mold release agent and optionally blowing agents and other additives, is introduced into the mold, such that the second mixture surrounds the first mixture and compresses it. A third, optional, reaction mixture, the same as or different from the second mixture, may also be employed in a manner similar to the introduction of the second mixture. The final composite plastic part releases smoothly from the mold and evidences good lightfast and colorfast properties.

    摘要翻译: 由(a)异氰酸酯含量为5至50%的芳族异氰酸酯制备的第一反应混合物和(b)分子量为32至10,000的含有至少两个异氰酸酯反应性氢原子的化合物,其当量比 的组分“a”与组分“b”的比例为0.8:1至5:1,将0.1至20%的发泡剂和任选的其它已知添加剂引入具有刚性腔的封闭模具中。 在该混合物已经变得耐渗透但仍然是可压缩的情况下,由(c)异氰酸酯含量为5至50%的脂族和/或脂环族多异氰酸酯制备的第二反应混合物和(d)分子量为32的化合物 至10,000,其含有至少两个异氰酸酯反应性氢原子,组分“c”与组分“d”的当量比为0.8:1至5:1,内部脱模剂和任选的发泡剂和其它添加剂, 被引入模具中,使得第二混合物围绕第一混合物并将其压缩。 可以以与引入第二混合物相似的方式使用与第二混合物相同或不同的第三种任选的反应混合物。 最终的复合塑料部件从模具中平滑地释放,并且证明具有良好的耐光性和耐色性。

    Pneumatic tire
    9.
    发明授权
    Pneumatic tire 失效
    气动轮胎

    公开(公告)号:US4315536A

    公开(公告)日:1982-02-16

    申请号:US913702

    申请日:1978-06-08

    摘要: A pneumatic tire comprising an encircling tread and two side members, wherein each side member comprises a side wall having a bead ring and part of the tread backing, characterized in that said tread backing has the following features:(a) the tread backing is formed as a ring which extends to the center of the tire and is intimately joined to the side wall on the other side;(b) bands whose length is substantially equal to the width of said ring are fixed on the circumference of said ring in the center of the tread;(c) the width of said bands is approximately equal to the distance between said bands;(d) there are recesses in the part of said ring facing the tread, into which said bands of the other side fit during assembly, so that said tread backing has a substantially flush surface after assembly; and(e) there are beads on the end of said bands for clamping in the tread.

    摘要翻译: 一种包括环形胎面和两个侧面构件的充气轮胎,其中每个侧部构件包括具有胎圈环和胎面背衬的一部分的侧壁,其特征在于,所述胎面背衬具有以下特征:(a)形成胎面背衬 作为延伸到轮胎中心并且紧密地连接到另一侧的侧壁的环; (b)其长度基本上等于所述环的宽度的带固定在胎圈的中心的所述环的圆周上; (c)所述带的宽度大致等于所述带之间的距离; (d)在所述环的面向胎面的部分中存在凹部,另一侧的所述带在组装期间配合到所述凹槽中,使得所述胎面衬垫在组装之后具有基本齐平的表面; 和(e)在所述带的末端存在用于夹紧在胎面中的珠。