| 摘要 |
1. Method of producing rovings with an appearance varying in colour and/or structure or the like from one longitudinal section to the other, from a fibre web which has various colours and/or structures and which is transferred on to the shell of a rotating pick-up drum fitted with holding elements, especially an array of small hooks, in the form of a plurality of web bands which are guided especially closely adjacent one another and which differ from one another in colour, structure or the like, and, at a place offset in the peripheral direction relatively to the transfer place, is divided and taken of in web bands with an appearance varying from one longitudinal section to another, and the sectionwise varying appearance is imparted to the web bands by providing a relative transverse movement between the web on the drum shell and the web bands either at the transfer of the web bands to or the taking-off of the web bands from the drum shell at least by the amount of the lateral offset of neighbouring web bands, characterised in that the transverse movement is effected suddenly, and its amplitude amounts exactly to the amount of or a multiple of the lateral offset of web bands guided adjacent one another, and that after a transverse movement in the one and/or other direction the further transfer or take-off of the web bands is effected without transverse movement for a specific section length of the web bands. |
