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    METHOD AND APPARATUS FOR FOAMING A HOLLOW BODY
    3.
    发明公开
    METHOD AND APPARATUS FOR FOAMING A HOLLOW BODY 审中-公开
    用于发泡空心体的方法和设备

    公开(公告)号：EP3278949A1

    公开(公告)日：2018-02-07

    申请号：EP17183942.6

    申请日：2017-07-31

    申请人： Cannon S.p.A.

    发明人： Volpato, Marco ,  Corti, Maurizio ,  Zampini, Samuele

    IPC分类号： B29C44/18 ,  B29C44/34 ,  B29C44/60 ,  F25D23/06

    CPC分类号： F25D23/064 ,  B29C44/188 ,  B29C44/3403 ,  B29C44/3415 ,  B29C44/362 ,  B29C44/60 ,  B29K2075/00 ,  B29K2105/0094 ,  B29K2995/0015 ,  B29K2995/0097 ,  B29L2031/7622

    摘要： A method for foaming a hollow body (2), such as a refrigerator cabinet (2), closed in a containment mold (3), that envisages the injection of a highly reactive chemical mixture (M) into the cavity (4) of the body (2), pre heated, letting it expand under vacuum conditions. The lower wall of the hollow body (2) is thermostated by a supporting table (6), in which a thermostating heat transfer fluid flows both during the insertion and stay in said containment mold (3). In particular, the surface of the lower wall of the hollow body (2), on which the resin is deposited, is heated to promote the fast and efficient expansion of the foam. The side containment and counteraction walls of the mold (3) also have a thermal conditioning function, just like the male element (48) and they carry out a heat control action on the hollow body (2); in addition, the vacuum conditions required for foaming are obtained by means of suitable gaskets.
    A first dosed quantity of mixture M is injected with a coherent jet J having an initial value of mass flow rate (mi) and average kinetic energy (E cin,sp ) of the jet (J) that forms a mixture puddle (Z1) in an intermediate area (7) of said foaming cavity (4); the coherent jet (J), by means of its thrust, causes a forward flow and a distribution of the mixture puddle (Z1, Z1') until it reaches at least 50% of said length dimension (D L ). The filling of the cavity (4) is completed by varying the mass flow rate (ṁi) and the average kinetic energy (E cin,sp ) of the coherent jet (J), keeping the body (2) thermostated and in a condition of depression until the end of the isometric expansion and polymerization of the mixture (M).

    摘要翻译： 一种用于使封闭在容纳模具（3）中的诸如冰箱柜（2）的空心体（2）发泡的方法，该方法设想将高度反应性的化学混合物（M）注入到空腔（4） （2）预先加热，使其在真空条件下膨胀。 中空体（2）的下壁通过支撑台（6）恒温，恒温传热流体在插入和滞留在所述容纳模具（3）期间流入该支撑台。 特别是，其上沉积有树脂的空心体（2）的下壁的表面被加热以促进泡沫的快速且有效的膨胀。 如同公元件（48）一样，模具（3）的侧面密封壁和反作用壁也具有热调节功能，并且它们对中空体（2）执行热控制作用; 另外，通过合适的垫圈获得发泡所需的真空条件。 第一定量的混合物M被注入具有初始形成混合物熔池（Z1）的喷流（J）的质量流量（mi）和平均动能（Ecin，sp）的初始值的相干喷流J 所述发泡腔（4）的中间区域（7）; 相干射流（J）通过其推力引起混合物熔池（Z1，Z1'）的向前流动和分布，直到其达到所述长度尺寸（DL）的至少50％。 通过改变相干射流（J）的质量流率（ṁi）和平均动能（Ecin，sp），保持主体（2）恒温并且处于低压状态 直到混合物（M）的等长膨胀和聚合结束。

    Headliner assembly and method of manufacture
    7.
    发明公开
    Headliner assembly and method of manufacture 失效
    Dachhimmelaufbau und Verfahren zur Herstellung

    公开(公告)号：EP0767037A2

    公开(公告)日：1997-04-09

    申请号：EP96307296.2

    申请日：1996-10-04

    申请人： ATOMA INTERNATIONAL INC.

    发明人： Kornylo, Walter P. ,  Houf, Kelly M. ,  Gorowicz, Janusz P.

    IPC分类号： B29C44/12

    CPC分类号： B29C44/362 ,  B29C44/025 ,  B29C44/12 ,  B29C44/388 ,  B60R13/0225 ,  B60R2013/0287 ,  Y10T428/24512 ,  Y10T428/249953 ,  Y10T428/249993 ,  Y10T442/3341

    摘要： A headliner assembly and method of manufacture for lining a passenger compartment ceiling of a motor vehicle comprising a headliner cover (50) having an exterior surface presenting a major exterior appearance of the headliner assembly and an opposite interior surface, and a body of foamed material (64) adhered to the opposite interior surface of the headliner cover (50) and having central portions thereof with a greater thickness than peripheral portions thereof, the body of foamed material (64) being of generally constant density throughout its extent including the central and peripheral portions thereof.

    摘要翻译： 一种用于衬套机动车辆的乘客舱顶板的顶篷组件和制造方法，包括具有外表面的车顶盖（50），该外表面具有顶篷组件的主要外观和相对的内表面，以及泡沫材料体（ 64）粘附到顶篷盖（50）的相对的内表面并且具有比其周边部分更大的厚度的中心部分，泡沫材料体（64）的主体在其整个程度上通常具有恒定的密度，包括中心和外围 其部分。