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    • 1. 发明授权
    • Solvent flush reaction injection molding mixhead
    • 溶剂冲洗反应注塑混合头
    • US5562883A
    • 1996-10-08
    • US436002
    • 1995-05-05
    • Wayne C. SalisburyJames R. PritchardWilliam M. HumphreyMichael J. Provencher
    • Wayne C. SalisburyJames R. PritchardWilliam M. HumphreyMichael J. Provencher
    • B29C45/24B01F15/00B01F5/02B01F5/04
    • B01F15/00025
    • A solvent flush reaction injection molding mixhead has a mixing chamber with a solvent inlet port in one end and a chemical outlet port in an opposite end. A pair of hydraulically operated chemical injectors are connected to the mixing chamber between the solvent inlet port and chemical outlet port to inject liquid reaction molding chemicals at high pressure through injector ports into the mixing chamber. The mixed chemicals are delivered through the chemical outlet port to a spray wand on the mixhead for application to a mold surface or an object requiring a foam coating. A flush valve is associated with the solvent inlet port and is moveable from a closed position to block the solvent inlet port while the chemicals are injected into the mixing chamber, and an open position where liquid solvent under a high pressure is supplied through turbulator ports into the mixing chamber to clean and flush any remaining mixed chemicals from the flush valve, the mixing chamber including the chemical injector ports, and the spray wand.
    • 溶剂冲洗反应注射成型混合头具有混合室,其一端具有溶剂入口和相对端的化学品出口。 一对液压操作的化学注射器连接到溶剂入口和化学品出口之间的混合室,以将液体反应成型的化学物质通过喷射器端口高压注入混合室。 混合的化学品通过化学品出口端口输送到混合头上的喷雾棒,用于模具表面或需要泡沫涂层的物体。 冲洗阀与溶剂入口相关联并且可以在封闭位置移动以阻止溶剂入口,同时将化学物质注入混合室,并且将高压液体溶剂通过湍流器端口供应的打开位置变为 混合室清洗冲洗冲洗阀中剩余的混合化学物质,混合室包括化学注入口和喷雾棒。
    • 5. 发明授权
    • Method for casting a thermoplastic automotive air bag cover skin with a
lesser strength thermoplastic tear seam strip insert
    • 用低强度热塑性撕裂缝条插入件铸造热塑性汽车气囊罩皮的方法
    • US5567375A
    • 1996-10-22
    • US465306
    • 1995-06-05
    • Scott M. FilionJohn D. GrayWilliam M. Humphrey
    • Scott M. FilionJohn D. GrayWilliam M. Humphrey
    • B29C37/00B29C41/18B29C41/20B29C47/00B60R21/2165
    • B29C41/20B29C37/0057B29C41/18B29C47/0028B29C47/003B60R21/2165B29C47/00B29L2031/3038
    • Method and apparatus including a powder box and heatable shell tool are disclosed for forming a thermoplastic automotive air bag cover skin with a lesser strength thermoplastic tear seam strip insert wherein the latter is initially formed with a protruding rib on one side and a pointed ridge on an opposite side. A heat resistant elastomeric transfer socket attached to the powder box interior receives and holds the insert rib and thereby the insert in a prescribed tear seam configuration and then positions the tear seam strip insert against a heated skin defining mold surface on the shell tool when the powder box is joined with the latter. The skin is formed by casting thermoplastic powder from the powder box against the heated mold surface and about the tear seam insert. The pointed ridge of the tear seam strip insert is pressed with a limited force against the heated mold surface by the transfer socket and prevents air entrapment between the tear seam strip insert and mold surface as the insert melts and joins with a surrounding layer of powder melt that forms the skin on cooling. In the process of melting, the pointed edge of the ridge and all of the rib of the insert melts and becomes part of a tear seam where the insert fuses with the skin while conforming to the mold surface to smoothly blend with the outer side of the skin while the backside of the insert smoothly blends with the surrounding inner side of the skin.
    • 公开了一种包括粉末盒和可加热壳体工具的方法和装置,用于形成具有较小强度的热塑性撕裂缝条插入件的热塑性汽车气囊盖皮肤,其中后者最初形成有一侧上的突出肋, 对面 附接到粉盒内部的耐热弹性体传送插座接收并保持插入肋,从而将插入物保持在规定的撕裂缝构造中,然后将撕裂缝条插入物抵靠在壳工具上限定模具表面的加热皮肤上,当粉末 盒子与后者结合。 通过将粉末盒中的热塑性粉末相对于加热的模具表面和撕裂接缝插入件而形成皮肤。 撕裂缝条插入件的尖脊通过转移插座以有限的力压靠加热的模具表面,并且当插入件熔融并与周围的粉末熔融层结合时防止在撕裂缝条插入件和模具表面之间的空气夹带 在冷却时形成皮肤。 在熔化过程中,脊的尖边和刀片的所有肋均熔化,并成为撕裂缝的一部分,其中插入件与皮肤融合,同时与模具表面一致,以与外表面平滑地融合 皮肤,而插入物的背面与皮肤周围的内侧平滑地融合。
    • 6. 发明授权
    • Filled aliphatic thermoplastic urethane automotive air bag door tear
seam insert
    • 填充脂肪热塑性聚氨酯汽车气囊门撕裂缝
    • US5530057A
    • 1996-06-25
    • US465511
    • 1995-06-05
    • William M. HumphreyEugene P. ShopeDonald B. Preston
    • William M. HumphreyEugene P. ShopeDonald B. Preston
    • B60R21/2165C08K3/00C08K3/30C08K7/26C08J3/00C08K3/20C08L75/00
    • C08K3/30C08K3/0033C08K7/26B60R21/2165
    • A filled aliphatic thermoplastic urethane automotive air bag door tear seam insert is formed of a polyol, a chain extender, an organic diisocyanate, an antioxidant, a urethane catalyst, and a weakening filler wherein the filler is present in a range of approximately 60% to 80% by weight and is selected from the group consisting of anhydrous calcium sulfate, nepheline syenite and hollow silica-alumina alloy microspheres and combinations thereof. The filler may be only one of the group members or any combination thereof and in either equal or unequal proportions. The insert is adapted to be molded in place in a cover skin cast there about. The cast cover skin including the tear seam insert may be coated with a light stable paint; or for light stability and color matching, the urethane elastomer forming the cover skin and insert is formulated to include an ultra violet stabilizing agent(s) and a color pigment(s) in certain critical concentrations to obtain the desired effect.
    • 填充的脂肪族热塑性聚氨酯汽车气囊门撕裂接缝插入物由多元醇,增链剂,有机二异氰酸酯,抗氧化剂,氨基甲酸酯催化剂和弱化填料形成,其中填料存在于约60%至 80重量%,选自无水硫酸钙,霞石正长岩和中空二氧化硅 - 氧化铝合金微球及其组合。 填料可以仅是组成员之一或其任何组合,并且可以相等或不相等。 该插入件适于在其周围的盖子皮肤中成型就位。 包括撕裂接缝插入件的铸造皮肤皮肤可以涂覆有光稳定的涂料; 或用于光稳定性和颜色匹配,形成覆盖皮肤和插入物的聚氨酯弹性体被配制为包括一定程度的紫外线稳定剂和着色颜料以获得所需的效果。