| 摘要 |
611,927. Pile fabrics. FUHRHOP, W. F., and ISSUM, J. B. H. van. Feb. 28, 1946, Nos. 6279, 7145, 16163, 16438 and 37530. [Class 142(iv)] A method of manufacturing a pile fabric consists in assembling carded or similarly processed fibrous substance in superposed layers, so that the fibres of the layers are .disposed longitudinally or approximately so, applying a consolidating medium to the fibrous layers before, during or after assemblage so that adjacent fibrous layers are separated by layers of consolidating medium, the resulting consolidated block being cut transversely of the run of the fibres into sections, a backing being applied to each section, and the consolidating medium being removed from the fibres. In the form shown, a web 1 of fibrous material is conveyed from a carding or other processing machine and after having a binding agent applied thereto by a sprayer 4 and being dried by a heater 5 is impregnated with a consolidating medium by sprayers 8 and then assembled in superposed layers 19 in a reciprocating trough 18. The block is then cut transversely into sections and each section has a backing, e.g. of plastic material applied thereto, after which the consolidating medium is removed. The fibrous substance may be stretched before impregnation with the consolidating medium. The consolidating medium may, however, be applied in the form of soluble or thermoplastic powder, flakes or sheets during the formation of the superposed layers. In a modification. the fibrous substance is divided into strands which, after being impregnated with a binding agent and dried, are wound on spools which are arranged in predetermined order in a carrier. The strands are then drawn from the spools, impregnated with consolidating medium and assembled in superposed layers. The spools may be wound with strands of different colour so as to produce a pattern in the fabric. In a further modification, the backing is rendered porous by combining with the strands of fibrous substance, filaments which resist both the consolidating medium and the backing, but are capable of being removed by a solvent after the consolidating medium has been removed. The spacing of the superposed layers may be determined by rods, or by regulating the thickness of consolidating medium supplied. Specifications 588,548 and 600,119 are referred to. |
