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    • 8. 发明授权
    • Method of making patterned dry resin coated sheet insulation
    • 制作图案干树脂涂层板材绝缘方法
    • US3974302A
    • 1976-08-10
    • US527458
    • 1974-11-26
    • Edward J. CroopHoward E. SaundersDean C. Westervelt
    • Edward J. CroopHoward E. SaundersDean C. Westervelt
    • B05B15/04B05D1/04B05D1/32B05D3/06B05D5/12D21H23/50H01B3/06H01B3/08H01B3/50H01B3/52H01B3/54H01F27/32H01F41/12B05D1/06
    • D21H23/50B05B15/045B05D1/045B05D5/12H01B3/06H01B3/084H01B3/50H01B3/52H01B3/54H01F27/323H01F41/122B05D1/32B05D2203/22B05D2252/02B05D2252/10B05D3/068Y10T29/49071
    • A porous, electrical insulating adhesive substrate is made by (A) electrostatically coating a flexible sheet material with heat reactive adhesive resin particles, having an average particle size of between about 1 micron to 2,000 microns, the adhesive particles are applied in a predetermined pattern on the sheet covering from about 10 percent to 90 percent of the sheet material area, the area between the resin pattern not being patterned and then (B) heating the patterened coated sheet material between about 65.degree.C to 250.degree.C, forming a discontinuous, 0.25 mil to 25 mil (0.006 mm to 0.635 mm) thick, dry coating pattern of heat reactive adhesive particles bonded to the sheet material, said heat reactive adhesive coating covering from about 10 percent to 90 percent of the sheet material area; the patterned coated sheet may then be inserted as an oil permeable layer insulation between high voltage windings and low voltage windings and between layers of high and low voltage windings in a wound coil assembly, after which the assembly can be heated at a temperature and for a time effective to securely bond the winding layers together, and thus provide a porous, oil permeable, bonded transformer coil assembly.
    • 多孔电绝缘粘合剂基材是通过(A)用热反应性粘合树脂颗粒静电涂覆柔性片材制成的,其平均粒度为约1微米至2,000微米,粘合剂颗粒以预定图案施加在 片材覆盖片材面积的约10%至90%,树脂图案之间的区域未被图案化,然后(B)在约65℃至250℃之间加热被镀覆的片材,形成不连续的, 0.25密耳至25密耳(0.006mm至0.635mm)的厚的,与片材材料结合的热反应性粘合剂颗粒的干涂层图案,所述热反应性粘合剂涂层覆盖片材面积的约10%至90%; 然后可以将图案化的涂覆片材作为高压绕组和低压绕组之间的油渗透层绝缘以及在缠绕线圈组件中的高压和低压绕组的层之间插入,之后组件可以在一个温度下加热, 时间有效地将绕组层牢固地粘合在一起,从而提供多孔的,可透油的,粘合的变压器线圈组件。