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    Machine for the production of moulded articles of plastic material, in particular of crash helmets for motorcyclists and the like
    41.
    发明授权
    Machine for the production of moulded articles of plastic material, in particular of crash helmets for motorcyclists and the like 失效
    用于生产塑料材料的模制品的机器，特别是用于摩托车手等的碰撞头盔

    公开(公告)号：US4698001A

    公开(公告)日：1987-10-06

    申请号：US744696

    申请日：1985-06-14

    申请人： Mario Vismara

    发明人： Mario Vismara

    IPC分类号： B29C44/00 ,  A42B3/06 ,  A42B3/12 ,  A42C2/00 ,  B29C33/30 ,  B29C33/34 ,  B29C39/12 ,  B29C44/04 ,  B29C45/16 ,  B29K105/04 ,  B29L31/48 ,  B29C67/20

    CPC分类号： A42C2/002 ,  A42B3/128 ,  B29C33/306 ,  B29C44/04 ,  B29C44/445 ,  B29C2043/046 ,  B29K2105/04 ,  B29L2031/4821

    摘要： A machine for the manufacturing of moulded articles of plastic material, in particular of helmets for motor cyclists, includes at least two moulds and at least a counter-mould for the forming of the articles, the moulds and counter-mould(s) defining between themselves moulding cavities of different shapes. The moulds and the counter-moulds, excepting the first one, are each connected with a feeder of a different plastic material, and the moulds can be moved into alignment with the counter-moulds, for the moulding of respective superimposed layers of different plastic materials by sintering with steam.One mould is suitable to be positioned in correspondence of a zone of unloading of the article produced while at least another mould is in its forming position.

    摘要翻译： 用于制造塑料材料的模制品的机器，特别是用于摩托车骑行者的头盔的模制品包括至少两个模具和用于形成制品的至少一个对模具，模具和对模具定义在 自己成型不同形状的腔体。 除了第一种模具和对模具之外，模具和对模具都与不同塑料材料的进料器连接，并且可以将模具移动成与对模具对准，以便模制不同塑料材料的各个重叠层 通过用蒸汽烧结。 一个模具适合于在至少另一个模具处于其成形位置时所生产的制品的卸载区域对应地定位。

    Natural sandwich of filled polyurethane foam
    42.
    发明授权
    Natural sandwich of filled polyurethane foam 失效
    填充聚氨酯泡沫的天然三明治

    公开(公告)号：US4164526A

    公开(公告)日：1979-08-14

    申请号：US844131

    申请日：1977-10-20

    申请人： Edward L. Clay ,  Jerry L. Baker

    发明人： Edward L. Clay ,  Jerry L. Baker

    IPC分类号： B29C44/04 ,  C08J9/00 ,  C08J9/34 ,  B29D27/04 ,  C08G18/00 ,  C08G18/08 ,  C08G18/14

    CPC分类号： C08J9/34 ,  B29C44/04 ,  C08J9/0066 ,  B29K2075/00 ,  B29K2105/16 ,  C08J2375/00 ,  Y10S264/13 ,  Y10S264/14 ,  Y10S264/17 ,  Y10T428/233 ,  Y10T428/24174 ,  Y10T428/24438 ,  Y10T428/24992 ,  Y10T428/249986

    摘要： A molding composition is disclosed for forming in a single step a natural sandwich foam product having a cellular core and a thick, densified outer layer. A hard, particulate filler material such as fly ash is admixed with an unreacted, rigid polyurethane foam system, together with a density distribution control agent such as carbon tetrachloride which lowers the viscosity of the admixture. In molding, the mold cavity is charged with the admixture and the foam reaction is permitted to occur with the mold closed. The resultant, filled foam product has a thick outer layer formed adjacent the mold surface of substantially greater density than its core. In the densified layer, both the polyurethane and filler material components of the resultant product are concentrated to provide over three times the density of the core structure. Formulations are set forth which provide substantial layer thickness and an outer surface having a durometer hardness value of 50 or greater over the entire surface area. If desired, one or more barrier members may be provided in the mold cavity in order to cause the generation of a densified region in the resultant product at the pressure barrier during the foam reaction, thereby reinforcing the core to increase the structural strength of the product.

    摘要翻译： 公开了一种模制组合物，用于在单一步骤中形成具有多孔芯和厚而致密的外层的天然夹心泡沫产品。 将诸如飞灰的硬颗粒填料与未反应的硬质聚氨酯泡沫体系以及密度分布控制剂如四氯化碳一起混合，这降低了混合物的粘度。 在模制中，模腔中装有混合物，并且允许模具闭合时发生泡沫反应。 所得填充的泡沫产品具有与模具表面相邻的厚的外层，其密度比其核心大得多。 在致密层中，所得产物的聚氨酯和填料材料组分都被浓缩，以提供芯结构密度的三倍以上。 提出了提供实质层厚度的制剂和在整个表面积上具有50或更大的硬度计硬度值的外表面。 如果需要，可以在模腔中设置一个或多个阻挡构件，以便在泡沫反应期间在压力屏障下产生在所得产物中的致密化区域，从而加强芯以增加产品的结构强度 。

    Method of forming a spring cushion construction
    43.
    发明授权
    Method of forming a spring cushion construction 失效
    形成弹簧缓冲结构的方法

    公开(公告)号：US4003113A

    公开(公告)日：1977-01-18

    申请号：US574598

    申请日：1975-05-05

    申请人： Carl Gordon Bulloch, Jr.

    发明人： Carl Gordon Bulloch, Jr.

    IPC分类号： A47C27/04 ,  A47C27/20 ,  B29C33/20 ,  B29C33/36 ,  B29C44/04 ,  B29C44/12 ,  B68G7/00 ,  B29D3/00

    CPC分类号： B29C44/12 ,  A47C27/04 ,  A47C27/20 ,  B29C44/04 ,  B68G7/00 ,  B29C33/20 ,  B29C33/36 ,  Y10S264/14 ,  Y10S297/02 ,  Y10T29/481

    摘要： A method of forming a spring cushion construction comprising a foamed pad having a generally flat inner surface with a depending peripheral edge, the flat inner surface including a dense outer crust. A spring assembly is disposed so that the terminal face portions thereof contact the outer crust and with the depending edge of the pad confiningly receiving the spring assembly to prevent lateral displacement therebetween. The pad is formed by a method which includes foaming a foamable material in an open top mold while leveling the upper surface of the foamable material in a manner which does not interfere with the formation of a dense outer crust thereon. The depending foam edge may then be formed by adding additional foamable material along the periphery of the pad, or by suitably attaching a preformed foam strip therealong.

    摘要翻译： 一种形成弹簧衬垫结构的方法，包括具有大致平坦的内表面和具有固定周边边缘的泡沫衬垫，所述平坦内表面包括致密的外壳。 弹簧组件设置成使得其端面部分接触外壳并且与限定接收弹簧组件的衬垫的悬垂边缘相接触以防止它们之间的横向位移。 衬垫由一种方法形成，该方法包括在敞开的顶部模具中发泡可发泡材料，同时以不妨碍其上形成致密的外壳的方式平整可发泡材料的上表面。 然后可以通过沿垫的周边添加额外的可发泡材料，或者通过在其上适当地附着预成型的泡沫带来形成固定的泡沫边缘。

    Method of producing an integral skin polyurethane foam
    44.
    发明授权
    Method of producing an integral skin polyurethane foam 失效
    生产全身皮肤聚氨酯泡沫的方法

    公开(公告)号：US3694530A

    公开(公告)日：1972-09-26

    申请号：US3694530D

    申请日：1969-11-17

    申请人： GOODYEAR TIRE & RUBBER

    发明人： WOLFE JAMES D

    IPC分类号： B29C33/56 ,  B29C33/62 ,  B29C44/04 ,  C08J9/34 ,  B29D27/04 ,  C08G22/44

    CPC分类号： C08J9/34 ,  B29C33/56 ,  B29C33/62 ,  B29C44/04 ,  B29K2075/00 ,  B29K2105/043 ,  C08J2375/00 ,  Y10S264/05 ,  Y10S264/14 ,  Y10S264/18 ,  Y10S411/927 ,  Y10T428/24438 ,  Y10T428/24992 ,  Y10T428/31598

    摘要： A method of producing integral skin polyurethane foams having densities as low as 1.0 to 3.0 lbs/ft3 and surfaces which may simulate grain leather. The mold surface is first coated with a release agent, then a skin forming agent and then the foamable polyurethane reaction mixture is cast in the coated mold. Representative examples of the skin forming agents are polyester polyether and polyhydrocarbon polyols of two to 10 hydroyxls, hydroxyl containing polymers having a hydrocarbon, polyester or polyether backbone. The above skin forming agents may be applied to the mold surface by incorporation in a suitable solvent such as a low boiling liquid hydrocarbon or ketone. Polyurethane catalysts may also be added to the film forming agent solution. Another group of film forming agents which may be used are particulate materials which have the ability to absorb at least 0.5 grams of water per gram of material. Representative examples are sodium chloride, diatomaceous earth and talc.

    摘要翻译： 一种生产密度低至1.0磅/立方英尺/立方厘米的整体表皮聚氨酯泡沫的方法和可以模拟谷物皮革的表面。 模具表面首先用脱模剂涂覆，然后涂覆成皮剂，然后将可发泡聚氨酯反应混合物浇铸在涂覆的模具中。 皮肤形成剂的代表性实例是聚酯聚醚和2至10个水溶性的多羟基多元醇，含羟基的聚合物具有烃，聚酯或聚醚主链。 上述皮肤成型剂可以通过掺入合适的溶剂如低沸点液体烃或酮中而施加到模具表面。 也可以将聚氨酯催化剂加入到成膜剂溶液中。 可以使用的另一组成膜剂是具有每克材料吸收至少0.5克水的能力的颗粒材料。 代表性的实例是氯化钠，硅藻土和滑石。