Apparatus and methods for applying conformal coatings to electronic
circuit boards
    101.
    发明授权
    Apparatus and methods for applying conformal coatings to electronic circuit boards 失效
    将保形涂层应用于电子电路板的装置和方法

    公开(公告)号:US5409733A

    公开(公告)日:1995-04-25

    申请号:US259818

    申请日:1994-06-15

    Abstract: Apparatus and methods for producing intermittent, discrete patterns of coating material onto discrete irregular substrate areas, such as electronic circuit boards, where the patterns have sharp, square leading and trailing edges, as well as side edges. A slot nozzle die has elongated air slots along the slot extrusion opening. In the operation of the apparatus, the air flow is initiated from both air slots prior to the initiation of the coating material flow. Also, the air flow is continued beyond that point in time, when the coating material flow ceases. The delays between the operations of the air flow and the hot melt flow are on the order of micro seconds. Alternatively, the lead and lag air start and stop times on each side of the film of coating material are different to control the exact disposition of the square cut-on and square cut-off coating edge on the circuit board. The air flow carries the film coating material to the circuit board for deposition in discrete areas thereon. The sharp cut-on and cut-off accommodate multiple discrete area coating or multiple automated circuit board coating.

    Abstract translation: 用于在离散的不规则衬底区域(例如电子电路板)上产生间歇性离散图案的涂覆材料的设备和方法,其中图案具有尖锐的,正方形的前缘和后缘以及侧边缘。 狭缝喷嘴模具具有沿着狭槽挤出开口的细长空气槽。 在装置的操作中,在涂层材料流动开始之前,空气流从两个空气槽开始。 此外,当涂料流动停止时,空气流继续超过该时间点。 空气流动和热熔体流动的操作之间的延迟大约为微秒级。 或者,涂层材料膜两侧的引导和滞后空气开始和停止时间是不同的,以控制电路板上正方形切割和方形截止涂层边缘的精确布置。 空气流将膜涂层材料运送到电路板上,用于沉积在其上的离散区域中。 尖锐的切割和切割可适应多个离散区域涂层或多个自动化电路板涂层。

    Housing for fitting in motor vehicles to hold electronic components
    103.
    发明授权
    Housing for fitting in motor vehicles to hold electronic components 失效
    用于装配电机的住房用于保持电子元件

    公开(公告)号:US5208728A

    公开(公告)日:1993-05-04

    申请号:US857948

    申请日:1992-03-26

    Applicant: Klaus Schirmer

    Inventor: Klaus Schirmer

    Abstract: To make housings used in automotive engineering for holding electronic components suitable for engine compartment installation, complex measures are taken that involve high manufacturing costs. In accordance with the invention, a housing is provided that permits simple production at low cost and affords dependable protection of the electronic systems, in that the electronic components mounted on an electronic carrier are provided with a protective lacquer, and then covered with a flexible and watertight foil as a protection against moisture in such a way that it provides an airtight and watertight seal on an all-round edge formed by a metal plate supporting the electronic carrier. A housing cover forming the housing in conjunction with the metal plate serves as a mechanical protection.

    Abstract translation: 为了使汽车工程中的外壳用于保持适用于发动机舱安装的电子部件,采取了涉及高制造成本的复杂措施。 根据本发明,提供了允许以低成本简单生产并提供对电子系统的可靠保护的壳体,因为安装在电子载体上的电子部件设置有保护漆,然后被覆盖有柔性和 防水箔以防止湿气的形式,使得其在由支撑电子载体的金属板形成的全方位边缘上提供气密和水密密封。 与金属板一起形成壳体的壳体盖用作机械保护。

    Process for conformal coating of printed circuit boards
    104.
    发明授权
    Process for conformal coating of printed circuit boards 失效
    印刷电路板的保形涂布工艺

    公开(公告)号:US5102712A

    公开(公告)日:1992-04-07

    申请号:US479471

    申请日:1990-02-13

    Abstract: A method of applying a conformal coating to a printed circuit board and components attached thereto while leaving selected components attached thereto uncoated, comprises the steps of providing a printed circuit board having a multiplicity of components attached thereto, including selected components that are not to be coated; enclosing the selected components within conductive protective enclosures sized to enclose the selected components therein and thereby protect those components from the intrusion of conformal coating material, the enclosures having sufficient electrical conductivity to discharge electrostatic charges therefrom when one of the enclosures is contacted by an electrically conductive medium, thereby protecting the components attached to the printed circuit board from damage due to the discharge of electrostatic charges from the enclosures; applying a conformal coating to the printed circuit board, thereby conformal coating the enclosures and the components which are not protected by the enclosures; and removing the coated enclosures from the selected components.

    Abstract translation: 将保形涂层施加到印刷电路板和附着于其上的部件同时留下未涂覆的选定部件的方法包括以下步骤:提供具有连接到其上的多个部件的印刷电路板,包括未被涂覆的选定部件 ; 将所选择的部件封装在导电保护外壳内,其尺寸适于将选定部件包围在其中,从而保护这些部件免受保形涂层材料的侵入,所述外壳具有足够的导电性,以在其中一个外壳与导电 从而保护附接到印刷电路板的部件免受来自外壳的静电电荷的损坏; 将适形涂层施加到印刷电路板上,由此共形涂覆外壳和未被外壳保护的部件; 并从所选择的组件中移除涂覆的外壳。

    Method of conformal coating
    106.
    发明授权
    Method of conformal coating 失效
    保形涂层方法

    公开(公告)号:US5017409A

    公开(公告)日:1991-05-21

    申请号:US205889

    申请日:1988-06-13

    Applicant: Hendrik F. Bok

    Inventor: Hendrik F. Bok

    Abstract: Spray coating, particularly flat spray coating of circuit boards. Applicant's method of conformal coating, eliminates "railroading" at the edges of the flat spray web and assures precise control of the amount of coating material placed on the circuit board surface.The method includes longitudinally advancing a pressurized coating over a surface to be coated, while simultaneously feeding the coating in a flat spray pattern, and triggering feeding "ON/OFF" so as to proportion the amount of coating being fed onto the surface and to reduce "fishtail" at the edges of the flat spray pattern.

    Abstract translation: 喷涂,特别是平面喷涂电路板。 申请人的保形涂布方法消除了在平坦喷涂网边缘处的“铁路”,并且确保精确地控制放置在电路板表面上的涂层材料的量。该方法包括将加压涂层纵向推进到待涂覆的表面上, 同时以平坦的喷射图案供给涂层,并且触发进给“打开/关闭”,以便将进料的涂层的量与表面上的比例进行比例,并减少在平坦喷雾图案的边缘处的“鱼尾”。

    Method for moistureproof coating of an electrical product
    107.
    发明授权
    Method for moistureproof coating of an electrical product 失效
    电气产品防潮涂层方法

    公开(公告)号:US4698240A

    公开(公告)日:1987-10-06

    申请号:US830843

    申请日:1986-02-19

    Abstract: A method for moistureproof coating of an electrical product, which comprises applying an organic solution of a polyfluoroalkyl group-containing polymer dissolved in a non-combustible low boiling point organic solvent, to a surface of an electrical product, and drying it by evaporating the low boiling point organic solvent, to form a coating layer of the polyfluoroalkyl group-containing polymer on the surface of the electrical product, wherein said polyfluoroalkyl group-containing polymer is a copolymer of a polymerizable compound having a polyfluoroalkyl group with other polymerizable compound, and the copolymer has a glass transition temperature of not higher than 60.degree. C.

    Abstract translation: 一种电气产品的防潮涂覆方法,其特征在于,将溶解在不燃性低沸点有机溶剂中的含有多氟烷基的聚合物的有机溶液涂布在电气产品的表面,通过蒸发低温 沸点有机溶剂,在电气产品的表面形成含有多氟烷基的聚合物的涂层,其中所述含多氟烷基的聚合物是具有多氟烷基的聚合性化合物与其它聚合性化合物的共聚物, 共聚物的玻璃化转变温度不高于60℃

    Conformal coating systems
    108.
    发明授权
    Conformal coating systems 失效
    保形涂层系统

    公开(公告)号:US4451523A

    公开(公告)日:1984-05-29

    申请号:US528286

    申请日:1983-08-31

    Abstract: Ultraviolet curable polymerizable coating system having a built-in secondary curing mechanism is disclosed. The polymerizable coating system is a one component system comprising at least one urethane-acrylate or methacrylate, an allyl-group containing acrylate or methacrylate monomer, a non-allylic acrylate or methacrylate diluent, a polymerization initiator of the photoinitiator type, and a metal drier. The coating system is UV curable, and also possesses an additional cure mechanism.

    Abstract translation: 公开了具有内置二次固化机理的紫外线固化可聚合涂覆体系。 可聚合涂布体系是包括至少一种氨基甲酸酯 - 丙烯酸酯或甲基丙烯酸酯,含烯丙基的丙烯酸酯或甲基丙烯酸酯单体,非烯丙基丙烯酸酯或甲基丙烯酸酯稀释剂,光引发剂类型的聚合引发剂和金属干燥剂 。 涂层体系是可UV固化的,并且还具有额外的固化机理。

    Conformal coating systems
    109.
    发明授权
    Conformal coating systems 失效
    保形涂层系统

    公开(公告)号:US4424252A

    公开(公告)日:1984-01-03

    申请号:US441117

    申请日:1982-11-12

    Inventor: Larry A. Nativi

    Abstract: Ultraviolet curable polymerizable coating system having one or more built-in secondary curing mechanisms is disclosed. The polymerizable coating system is a two component system comprising (1) a first component comprising at least one urethane-acrylate or methacrylate, and a mono or polyfunctional acrylate or methacrylate diluent and a polymerization initiator of the photo-initiator type, and (2) a second component comprising a polyisocyanate. The coating system is uv curable, and also possess at least one additional cure mechanism.

    Abstract translation: 公开了具有一个或多个内置二次固化机构的紫外线固化可聚合涂覆体系。 可聚合涂覆体系是双组分体系,其包括(1)包含至少一种氨基甲酸酯 - 丙烯酸酯或甲基丙烯酸酯的第一组分和单 - 或多官能丙烯酸酯或甲基丙烯酸酯稀释剂和光引发剂类型的聚合引发剂,和(2) 包含多异氰酸酯的第二组分。 涂层系统是紫外固化的,并且还具有至少一种另外的固化机理。

    Coating process mask
    110.
    发明授权
    Coating process mask 失效
    涂装工艺面膜

    公开(公告)号:US4299866A

    公开(公告)日:1981-11-10

    申请号:US62377

    申请日:1979-07-31

    Abstract: This invention describes a method of masking a workpiece to prevent the adhesion of a deposited tightly adhering conformal coating formed from the condensation of a vaporous diradical such as paraxylylene on selected portions of the workpiece. Specifically the process of the invention requires the covering of the areas of the workpiece, to which adhesion is not desired, with a non-polymerizing hydrocarbon and placing the covered area in close contact with an open cellular material containing a predominance of interconnecting cells which provides a large surface area for condensation of the unwanted condensate of the diradical, exposing the workpiece to the vaporous diradical, removing the workpiece from the open cellular material and immersing the workpiece in a solvent for swelling and dissolving the hydrocarbon covering.

    Abstract translation: 本发明描述了一种掩蔽工件的方法,以防止由气相双基(例如对二甲苯)冷凝形成的沉积紧密粘合的保形涂层粘附在工件的选定部分上。 具体地说,本发明的方法需要用非聚合烃覆盖不需要粘附的工件的区域,并且将覆盖区域与包含互连电池占优势的开放的多孔材料紧密接触, 用于冷凝双面不需要的冷凝物的大的表面积,将工件暴露于蒸气双向,从打开的多孔材料中去除工件并将工件浸入用于溶胀和溶解烃覆盖物的溶剂中。

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