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    Process for producing moldings with an increase in the melt stiffness
    1.
    发明申请
    Process for producing moldings with an increase in the melt stiffness 有权
    具有增加熔体刚度的生产模制品的方法

    公开(公告)号：US20060183869A1

    公开(公告)日：2006-08-17

    申请号：US11354114

    申请日：2006-02-15

    申请人： Andreas Dowe ,  Rainer Goring ,  Martin Himmelmann ,  Sonja Bollmann ,  Franz-Erich Baumann ,  Roland Wursche

    发明人： Andreas Dowe ,  Rainer Goring ,  Martin Himmelmann ,  Sonja Bollmann ,  Franz-Erich Baumann ,  Roland Wursche

    IPC分类号： C08C19/24

    CPC分类号： C08K5/098 ,  C08L69/00 ,  C08L77/02 ,  Y10T428/1352 ,  Y10T428/139 ,  C08L77/00 ,  C08L2666/14

    摘要： A process for producing moldings with condensing-up of a polyamide molding composition whose polyamide component contains, as a result of the method of preparation, at least 5 ppm of phosphorus in the form of an acidic compound by means of a compound having at least two carbonate units, wherein a) from 0.001 to 10% by weight, based on the polyamide, of a salt of a weak acid is added to the polyamide molding composition prior to compounding or during compounding, b) a mixture of the finished composition and the compound having at least two carbonate units is prepared, c) the mixture is, if appropriate, stored and/or transported and d) the mixture is subsequently processed to produce the molding, with the condensing-up occurring only in this step, effects a significant increase in the melt stiffness combined with moderate processing presssures, which considerably simplifies, in particular, the production of hollow bodies and hollow profiles having large diameters.

    摘要翻译： 一种聚酰胺成型组合物的制造用模制品的制造方法，其聚酰胺成分作为制备方法的结果，含有至少5ppm的酸性化合物形式的磷，该化合物具有至少两个 碳酸酯单元，其中a）基于聚酰胺的0.001至10重量％的弱酸盐在配混之前或在配混期间加入到聚酰胺模塑组合物中，b）成品组合物和 制备具有至少两个碳酸酯单元的化合物，c）如果合适的话，该混合物被储存和/或运输，以及d）随后将该混合物加工以产生模制物，其中仅在该步骤中发生冷凝， 结合中等加工压力的熔体刚度的显着增加，这特别地简化了具有大直径的中空体和中空型材的生产。

    Method and device for producing three-dimensional objects using laser technology and for applying an absorber using an ink jet method
    5.
    发明申请
    Method and device for producing three-dimensional objects using laser technology and for applying an absorber using an ink jet method 有权
    用于使用激光技术生产三维物体并使用喷墨法施加吸收体的方法和装置

    公开(公告)号：US20070183918A1

    公开(公告)日：2007-08-09

    申请号：US10592952

    申请日：2005-01-27

    申请人： Sylvia Monsheimer ,  Mark Grebe ,  Rainer Goring ,  Franz-Erich Baumann

    发明人： Sylvia Monsheimer ,  Mark Grebe ,  Rainer Goring ,  Franz-Erich Baumann

    IPC分类号： B22F3/105 ,  B22F3/10 ,  C22C1/04 ,  C22C33/02

    CPC分类号： B22F3/003 ,  B22F3/1055 ,  B22F2003/1058 ,  B23K26/342 ,  B23K26/703 ,  B28B1/001 ,  B29C35/08 ,  B29C64/129 ,  B29C64/153 ,  B29C64/165 ,  B29C64/40 ,  B33Y30/00 ,  C04B35/64

    摘要： The present invention relates to a process for the bonding of material for the production of three-dimensional objects by means of selective heating via a laser of wavelength from 100 to 3000 nm. The beam spot here may be a focused or unfocused beam spot, or may indeed be spread, as is the case with the diode laser, where the bars may have a stacked arrangement. The selectivity of the melting process is achieved via the application of an absorber to certain subregions of a layer composed of a pulverulent substrate, and then heating of the absorber by means of laser radiation of wavelength from 100 to 3000 nm. The heated absorber transfers the energy present therein to its surrounding pulverulent substrate, which is melted thereby and, after cooling, has firm cohesive bonding. The process is markedly more flexible, less expensive, and faster than conventional laser sintering.

    摘要翻译： 本发明涉及一种用于通过经由波长为100-3000nm的激光的选择性加热来粘结用于生产三维物体的材料的方法。 这里的光束点可以是聚焦或未聚焦的束斑，或者可能实际上被扩散，如二极管激光器的情况，其中条可具有堆叠布置。 熔融过程的选择性通过将吸收剂施加到由粉末基底构成的层的某些亚区域，然后通过波长为100至3000nm的激光辐射加热吸收体来实现。 加热的吸收器将其中存在的能量转移到其周围的粉状基底，其被熔化，并且在冷却之后具有牢固的内聚粘合。 该工艺比传统的激光烧结显着更灵活，更便宜，更快。