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    • 12. 发明申请
    • METHOD FOR MANUFACTURING BY WET PROCESS A NON-WOVEN LAYER AND MULTILAYER FLEXIBLE SHEET FOR ROOFING CARDBOARD MANUFACTURED WITH SUCH LAYER
    • 通过湿法制造的非织造层和多层柔性板用于制造具有这种层的卡片的方法
    • WO1982000837A1
    • 1982-03-18
    • PCT/EP1981000131
    • 1981-08-24
    • VERRETEXTIL ABBERGSTROEM L
    • VERRETEXTIL AB
    • D06N05/00
    • B32B5/26B32B5/022B32B5/12B32B2262/0276B32B2262/101B32B2307/3065B32B2419/06D21H27/36E04D5/10
    • A lower non-woven layer (18) is first formed by wet process on an inclined sieve (17) by means of a first hydroformer (16, 19). Then, the water is eliminated in the hydroformer (19) and the layer is possibly partially dried in a dryer (24). A sheet (25) impregnated with an adhesive (26'), for example a latex or a synthetic resin, is then deposited and applied on the lower layer (18) so as to obtain a good bond. A non-woven upper layer (35) is finally deposited on the sheet (25) by means of a second hydroformer (30, 36). The water is also eliminated from that layer which is appropriately partially dried (dryer 42). Thereby, a three layer sheet is provided, with optimum felt covering and reciprocal adhesion of the different layers. This sheet (43) is then forwarded to a drying stage (44) where the drying is completed, and possibly glued (glueing station 45) and hardened (hardener 46). The product thus manufactured is particularly appropriate as a roofing bituminous sheet.
    • 首先通过第一液压成型机(16,19)在倾斜筛(17)上通过湿法方法形成较低的无纺层(18)。 然后,在液压成型机(19)中消除水,并且该层可能在干燥器(24)中部分干燥。 然后将浸渍有粘合剂(26')(例如胶乳或合成树脂)的片材(25)沉积并施加在下层(18)上以获得良好的粘合。 最终通过第二液压成型机(30,36)将无纺上层(35)沉积在片材(25)上。 也可以从适当部分干燥的层(干燥器42)中除去水。 由此,提供三层片材,具有最佳的毡覆盖和不同层的相互粘附。 然后将该片材(43)送至干燥阶段(44),干燥阶段完成干燥,可能胶合(胶合站45)并硬化(硬化剂46)。 由此制造的产品特别适合作为屋顶沥青板。