METHOD AND APPARATUS FOR MULTILAYER DIE COATING
    3.
    发明申请
    METHOD AND APPARATUS FOR MULTILAYER DIE COATING 审中-公开
    多层涂料的方法和装置

    公开(公告)号:WO9608319A3

    公开(公告)日:1996-08-15

    申请号:PCT/US9511734

    申请日:1995-09-15

    Abstract: A method and apparatus for simultaneously coating multiple thin layers of relatively viscous fluids, including pressure sensitive adhesives (PSAs), onto a moving substrate. The method of the present invention comprises the adjustment of the pressure gradients in the interface region between two confluent flows so as to avoid recirculation therein. In particular, the pressure gradient along the middle lip is regulated so as to not be excessively positive, in order to position the separating line between the top and bottom flows at a particular point on the die lips, thus enhancing stable flow. In the apparatus of the present invention, a step configuration is formed on the die lips so that the downstream lip steps away from the web in the direction of web travel. In another aspect of the invention, the pressure gradient at various locations in the bead is controlled by beveling the upstream and downstream lips. In yet a further aspect of the present invention, the viscosities of the two liquids being coated are matched at therelevant shear rates to promote good coating quality.

    REPULPABLE PRESSURE-SENSITIVE ADHESIVE CONSTRUCTIONS HAVING MULTIPLE LAYERS
    5.
    发明申请
    REPULPABLE PRESSURE-SENSITIVE ADHESIVE CONSTRUCTIONS HAVING MULTIPLE LAYERS 审中-公开
    具有多层压力的压敏胶粘结构

    公开(公告)号:WO9608539A2

    公开(公告)日:1996-03-21

    申请号:PCT/US9511807

    申请日:1995-09-15

    Abstract: A pressure-sensitive adhesive construction repulpable in paper recycling operations, comprising a facestock which is repulpable; a dispersible pressure-sensitive adhesive comprising tacky emulsion polymers dispersible in water; and a nondispersible pressure-sensitive adhesive comprising tacky emulsion polymers not dispersible in water, wherein, on the facestock, the dispersible pressure-sensitive adhesive is closer to the facestock than the nondispersible pressure-sensitive adhesive, thereby improving both adhesive performance and recyclability.

    Abstract translation: 一种在纸回收操作中可重新排列的压敏粘合剂结构,包括可重新浆化的面料; 可分散的压敏粘合剂,其包含可分散在水中的粘性乳液聚合物; 和不分散的压敏粘合剂,其包含不能分散在水中的粘性乳液聚合物,其中在所述面材上,所述可分散压敏粘合剂比所述非分散性压敏粘合剂更接近所述面材,从而提高粘合性能和可再循环性。

    9.
    发明专利
    未知

    公开(公告)号:DE602004024522D1

    公开(公告)日:2010-01-21

    申请号:DE602004024522

    申请日:2004-05-28

    Abstract: A method of designing and the resulting thermally stable heated coating die apparatus, the die apparatus including a die having a die geometry and a heating system with heaters and temperature sensors. The method and resultant apparatus provides minimized temperature gradients, flat die lip faces in a die to roll plane and a flat die in a plane perpendicular to die flat lip faces and parallel to substrate width. The method optimizes simultaneously: die geometry, placement of the heaters, placement of temperature sensors, and shielding from operating conditions, using heat transfer and structural numerical modeling and statistical analysis while considering die functionality characteristics, minimum increment of temperature measurement and control accuracy related to minimum acceptable deviation from flatness, coating die material of construction relative to thermo-structural material properties, and desirable coating die material properties.

    10.
    发明专利
    未知

    公开(公告)号:AT451182T

    公开(公告)日:2009-12-15

    申请号:AT04753959

    申请日:2004-05-28

    Abstract: A method of designing and the resulting thermally stable heated coating die apparatus, the die apparatus including a die having a die geometry and a heating system with heaters and temperature sensors. The method and resultant apparatus provides minimized temperature gradients, flat die lip faces in a die to roll plane and a flat die in a plane perpendicular to die flat lip faces and parallel to substrate width. The method optimizes simultaneously: die geometry, placement of the heaters, placement of temperature sensors, and shielding from operating conditions, using heat transfer and structural numerical modeling and statistical analysis while considering die functionality characteristics, minimum increment of temperature measurement and control accuracy related to minimum acceptable deviation from flatness, coating die material of construction relative to thermo-structural material properties, and desirable coating die material properties.

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