Electrostatic coating of substrates of medicinal products
    181.
    发明授权
    Electrostatic coating of substrates of medicinal products 失效
    医药产品底物的静电涂层

    公开(公告)号:US5470603A

    公开(公告)日:1995-11-28

    申请号:US937870

    申请日:1992-10-19

    Abstract: Method of coating cores of pharmaceutical tablets with a dry powder, wherein the cores are fed onto a conveyor, the dry powder is supplied to a region through which the cores are to be conveyed, and the cores are conveyed on the conveyor through the region with the cores maintained at a different electric potential from the dry powder. In this way, the dry powder is attracted to the exposed surfaces of the cores to form powder coatings thereon. The dry powder on the surface of the cores is then melted to convert the powder into fused film coatings secured to the cores.

    Abstract translation: PCT No.PCT / GB92 / 00323 Sec。 371日期:1992年10月19日 102(e)日期1992年10月19日PCT提交1992年2月21日PCT公布。 公开号WO92 / 14451 日期:使用干燥粉末将药片包芯的方法,其中芯体被输送到输送机上,将干燥粉末供给到要被输送芯的区域,并且将核心在输送机上通过 核心与干粉保持不同的电位。 以这种方式,干粉被吸引到芯的暴露表面,以在其上形成粉末涂层。 然后将芯的表面上的干粉熔化以将粉末转化成固定到芯的熔融膜涂层。

    Electrostatic powder coating apparatus and method
    182.
    发明授权
    Electrostatic powder coating apparatus and method 失效
    静电粉末涂布装置及方法

    公开(公告)号:US5279863A

    公开(公告)日:1994-01-18

    申请号:US419531

    申请日:1989-10-10

    Abstract: An electrostatic powder coating apparatus comprising a powder reservoir, a gas flow injection chamber, a diffusion chamber and a coating chamber and method for coating a substrate or target objects. The injection chamber receives powder from the reservoir at a controlled rate. The powder particulates are entrained by a gas flow within the injection chamber. The diffusion chamber receives the particulates from the injection chamber. The diffusion chamber deaccelerates the particulates and creates a particulate cloud. The coating chamber receives the particulate cloud. A housing encloses the coating chamber. The coating chamber is isolated from the ambient atmosphere. The coating chamber has a cloud inlet and a cloud outlet. The cloud flows through the coating chamber from the inlet to the outlet. One or more deflectors, within the chamber, define a passage and two or more pockets adjoining the substrate or target objects. The deflectors deflect the carrier gas from the pockets to the substrate or target objects. The substrate or target objects are transported within the chamber along the passage. Coating material within the passage is concentrated around the substrate or target objects. The coating chamber includes electrodes and voltage biasing means. The biasing means acts upon the substrate or target objects which are positioned within the passage. The particulates are electrostatically deposited upon the substrate or target objects within the passage.

    Abstract translation: 一种静电粉末涂布装置,包括粉末储存器,气体流动注射室,扩散室和涂覆室以及用于涂覆基底或目标物体的方法。 注射室以受控的速率从储存器接收粉末。 粉末颗粒被注入室内的气流夹带。 扩散室从注射室接收微粒。 扩散室使微粒减速并产生颗粒云。 涂层室接收颗粒云。 外壳包围涂层室。 涂层室与环境大气隔离。 涂层室具有云入口和云出口。 云从入口到出口流过涂层室。 腔室内的一个或多个偏转器限定通道和邻近基底或目标物体的两个或多个凹穴。 导流板将载气从凹穴偏转到基底或目标物体。 衬底或目标物体沿着通道在腔室内运输。 通道内的涂层材料集中在基材或目标物体周围。 涂覆室包括电极和电压偏置装置。 偏置装置作用在位于通道内的基底或目标物体上。 颗粒被静电沉积在通道内的基底或目标物体上。

    Powder coating method for metallic surfaces
    183.
    发明授权
    Powder coating method for metallic surfaces 失效
    金属表面粉末涂装方法

    公开(公告)号:US5264254A

    公开(公告)日:1993-11-23

    申请号:US763467

    申请日:1991-09-23

    CPC classification number: B05D1/06 B05D7/14 B05D1/12

    Abstract: An electrostatical powder coating method starts out from a metallic surface provided with an oil film as a protection against corrosion during storing and transportation. Resin powder is applied to the surface without prior removal of the oil film. The powder layer is melted in a furnace and subsequently hardened by cooling. It is preferred that an amount of heat is supplied by the furnace which is sufficient to evaporate the oil. Preferably, an oil is used which is stable during heating as long as it remains on the work piece surface. This includes the possibility that all of the oil or at least some components thereof diffuse and evaporate through the powder layer during heating or, alternatively, that part or all of the oil remains on the work piece during the heat treatment and mixes with the powder layer. In both cases the quality of the resin coating is not deteriorated by the oil film.

    Abstract translation: 静电粉末涂布方法从设置有油膜的金属表面开始,作为保存和运输期间的防腐蚀。 将树脂粉末涂在表面上,无需预先除去油膜。 粉末层在炉中熔化,然后通过冷却硬化。 优选由炉供给足以蒸发油的热量。 优选地,使用在加热期间稳定的油,只要其保留在工件表面上即可。 这包括在加热期间所有油或其至少一些组分在粉末层中扩散和蒸发的可能性,或者替代地,该部分或全部油在热处理期间保留在工件上并与粉末层混合 。 在这两种情况下,树脂涂层的质量不会因油膜而劣化。

    Method for coating a metal substrate by the use of a resin composition
    187.
    发明授权
    Method for coating a metal substrate by the use of a resin composition 失效
    通过使用树脂组合物涂覆金属基材的方法

    公开(公告)号:US4965102A

    公开(公告)日:1990-10-23

    申请号:US314997

    申请日:1989-02-24

    CPC classification number: B05D7/546 B05D1/06 B05D7/16 B05D2601/28 B05D3/005

    Abstract: There is provided a method for coating a metal substrate by the use of a polyvinylidene fluoride resin composition. The method comprises forming a coating film made of a melted resin composition on the surface of an undercoated metal substrate at a temperature of from 200.degree. to 350.degree. C., said resin composition containing a major amount of polyvinylidene fluoride and from 5 to 40% by weight of an inorganic filler based on the total weight of the resin composition; and precooling said coating film to a temperature T.sub.A and then keeping said coating film at the temperature T.sub.A for at least one minute, wherein said temperature T.sub.A (.degree.C.) satisfies the inequality:T.sub.C -10.degree.C..ltoreq.T.sub.A .ltoreq.T.sub.C +10.degree.C.,said T.sub.C (.degree.C.) being the crystallization temperature for the polyvinylidene fluoride.

    Selective application of light-absorbing particles to a lenticular screen
    188.
    发明授权
    Selective application of light-absorbing particles to a lenticular screen 失效
    选择性地将光吸收颗粒应用于透镜屏

    公开(公告)号:US4701019A

    公开(公告)日:1987-10-20

    申请号:US938669

    申请日:1986-12-05

    CPC classification number: G03B21/625 B05D1/06 B05D3/029 B05D2401/32

    Abstract: Light-absorbing particles are selectively applied to a lenticular light-transmissive screen, such as a projection television screen. The particles are selectively deposited in grooves between lenticules of the screen by filling the grooves to a predetermined depth with a slurry comprising a mixture of a volatile liquid and the light-absorbing particles. Microwave radiation is applied to the screen with the deposited particles, to effect evaporation of any unevaporated liquid and fusing of the particles to each other and to the screen.

    Abstract translation: 光吸收粒子选择性地施加到诸如投影电视屏幕的透镜透光屏幕。 通过用包含挥发性液体和光吸收颗粒的混合物的浆料将槽填充到预定深度,颗粒被选择性地沉积在筛网的微细孔之间的凹槽中。 将微波辐射施加到具有沉积颗粒的筛网上,以实现任何未蒸发的液体的蒸发和颗粒彼此熔合和熔融。

    Method of producing polyvinylidene fluoride coatings
    189.
    发明授权
    Method of producing polyvinylidene fluoride coatings 失效
    生产聚偏氟乙烯涂料的方法

    公开(公告)号:US4255462A

    公开(公告)日:1981-03-10

    申请号:US929609

    申请日:1978-07-31

    Abstract: A powder coating composition comprising a homopolymer or copolymer of polyvinylidene fluoride having a melt flow index of 10 to 300 grams per ten minutes, determined in accordance with ASTM D 1238, Condition J and 5 to 50 weight percent of a glass having a grain size of 1 to 300 .mu.m; an improvement in a method of coating a metal or inorganic oxidic surface wherein a powder coating composition containing polyvinylidene fluoride is applied to such surface and fused thereon, the improvement residing in employing as the powder coating composition one containing 5 to 50 weight percent glass, based upon the weight of the polyvinylidene fluoride polymer; a coated object having a metallic or inorganic oxidic surface which is coated with a polyvinylidene fluoride homopolymer or copolymer which coating contains 5 to 50 weight percent, based upon the weight of the polyvinylidene fluoride, of glass particles, especially glass particles of a grain size of 1 to 300 .mu.m.

    Abstract translation: 一种粉末涂料组合物,其包含熔体流动指数为10至300克/ 10分钟的聚偏二氟乙烯的均聚物或共聚物,其根据ASTM D 1238,条件J和5至50重量%的晶粒尺寸为 1〜300亩; 涂覆金属或无机氧化物表面的方法的改进,其中将含有聚偏二氟乙烯的粉末涂料组合物施用于这种表面并在其上熔融,其改进在于使用含有5至50重量%玻璃基的粉末涂料组合物 以聚偏二氟乙烯聚合物的重量计; 具有金属或无机氧化物表面的被覆物体,其涂覆有聚偏二氟乙烯均聚物或共聚物,该涂层含有基于聚偏二氟乙烯重量的5-50重量%的玻璃颗粒,特别是玻璃颗粒的玻璃颗粒, 1〜300亩。

    Electrostatic coating method utilizing mixture of rough and spheroidized
resin particles
    190.
    发明授权
    Electrostatic coating method utilizing mixture of rough and spheroidized resin particles 失效
    使用粗糙和球化树脂颗粒的混合物的静电涂布方法

    公开(公告)号:US4154871A

    公开(公告)日:1979-05-15

    申请号:US825925

    申请日:1977-08-19

    CPC classification number: B05D1/06 Y10T428/2982

    Abstract: Improved electrostatic coating is obtained by heat-rounding or spheroidizing pulverized resin particles so that 30-80% take on a glossy appearance while the rest remain rough to provide a mixture that is free flowing at ordinary room temperature and would pass through a screen having openings not exceeding 200 micrometers. Preferably each particle of the mixture is a blend of thermosetting resin and curing agent.

    Abstract translation: 通过对粉碎的树脂颗粒进行加热或球化获得改进的静电涂层,使得30-80%呈现光滑的外观,而其余部分保持粗糙,以提供在常温下自由流动的混合物,并且将通过具有开口的筛网 不超过200微米。 优选地,混合物的每个颗粒是热固性树脂和固化剂的共混物。

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