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    • 3. 发明申请
    • REVERSE FEED FILM APPLICATOR
    • 反馈电影应用者
    • WO1997033042A1
    • 1997-09-12
    • PCT/US1997002518
    • 1997-02-06
    • BELOIT TECHNOLOGIES, INC.
    • BELOIT TECHNOLOGIES, INC.LI, Alfred, C.BECKER, Rex, A.BURNS, James, R.
    • D21H23/32
    • D21H23/36B05C5/027D21H23/38
    • An applicator head is positioned beneath a backing roll over which a substrate can be drawn. The applicator head has a housing which contains a pond of coating material between an up machine overflow lip and a down machine extraction plate or premetering plate. Coating material at a relatively low velocity flows into the pond adjacent to the overflow lip. The premetering plate extends radially from the coating inlet to a position proximate to and converging with the backing roll, where it premeters the amount of coating applied to the substrate. The premetering plate preferably has a plurality of holes through which coating and air are drawn. A metering element is spaced downstream of the premetering plate, and a low pressure area is constructed therebetween. Air and coating are drawn from the low pressure area through a valve, and the pressure thereby controlled.
    • 施用头位于背衬辊下方,可以在其上拉出基底。 涂抹器头具有壳体,该壳体在上部机器溢出唇缘和下降机提取板或预测板之间包含涂料池。 相对较低速度的涂层材料流入邻近溢流唇缘的池塘中。 预测量板从涂层入口径向延伸到靠近并与背衬辊会聚的位置,在该位置预测涂层施加到基底上的涂层量。 预测板优选具有多个孔,涂层和空气通过该孔被拉出。 计量元件在预测量板的下游间隔开,并且在它们之间构造低压区域。 空气和涂层通过阀从低压区抽出,从而控制压力。
    • 4. 发明申请
    • DUAL CHAMBER FILM APPLICATOR WITH IN-POND OVERFLOW
    • 双层膜应用者具有内部溢出
    • WO1997013034A2
    • 1997-04-10
    • PCT/US1996015361
    • 1996-09-16
    • BELOIT TECHNOLOGIES, INC.
    • BELOIT TECHNOLOGIES, INC.BECKER, Rex, A.LI, Alfred, C.BURNS, James, R.
    • D21H23/36
    • D21H23/36B05C3/18
    • A coater head (22) is positioned beneath a backing roll (24) and has a housing divided into three sections (25, 27, 41). A first coating pond (28) is defined between an overflow barrier and a first wall (33). A converging plate (32) extends between the first wall (33) and a second wall (35), and converges toward the web, and a second pond (43) is defined between the plate and an end wall (39). Coating is introduced to both ponds. A low pressure cavity (37) is defined beneath the converging plate (32) and between the first wall (33) and the second wall (35). The cavity (37) opens (72) to the second pond (43), and draws air and excess coating from the second pond (43). The web is prewetted as it passes through the first pond (28), and coating deprived of entrained air is applied to the web in the second pond (43). Coat weight uniformity and increased machine speeds are thus achievable.
    • 涂布机头(22)位于支承辊(24)的下方,并具有分成三个部分(25,27,41)的壳体。 第一涂覆池(28)被限定在溢流挡板和第一壁(33)之间。 会聚板(32)在第一壁(33)和第二壁(35)之间延伸并且朝向幅材会聚,并且在板和端壁(39)之间限定第二池(43)。 将涂层引入两池。 低压腔(37)被限定在会聚板(32)下面和第一壁(33)和第二壁(35)之间。 空腔(37)向第二池塘(43)打开(72),并从第二池塘(43)抽出空气和多余的涂层。 当纸幅通过第一池塘(28)时,预先润湿,并且将剥离的夹带空气的涂层施加到第二池塘(43)中的幅材上。 因此可以实现涂层重量均匀性和增加的机器速度。