Abstract: Disclosed is an apparatus for dyeing a bundle of fibers, such as a sliver, wool top or a synthetic-fiber tow. A bundle of fibers is accumulated into a dyeing can, comprising a main can and an auxiliary can, and, then, the bundle of fibers in the auxiliary can is pressed from above to pack the bundle of fibers in the main can in the compressed condition. Thereafter, the auxiliary can is separated from the main can. Next, a plurality of full packaged main cans are arranged in a predetermined positional relationship which conforms to the layout of the main cans in a dyeing bath and the full packaged main cans are charged into the dyeing bath while maintaining their prepared positional relationship. Then, the dyeing operation is carried out. After completion of the dyeing operation the main cans are taken out from the dyeing bath and are turned over so as to take out the packed bundle of fibers therefrom.

Abstract: Disclosed is a method for dyeing a bundle of fibers, such as a sliver, wool top or a synthetic-fiber tow. A bundle of fibers is accumulated into a dyeing can, comprising a main can and an auxiliary can, and, then, the bundle of fibers in the auxiliary can is pressed from above to pack the bundle of fibers in the main can in the compressed condition. Thereafter, the auxiliary can is separated from the main can. Next, a plurality of full packaged main cans are arranged in a predetermined positional relationship which conforms to the layout of the main cans in a dyeing bath and the full packaged main cans are charged into the dyeing bath while maintaining their prepared positional relationship. Then, the dyeing operation is carried out. After completion of the dyeing operation the main cans are taken out from the dyeing bath and are turned over so as to take out the packed bundle of fibers therefrom.

Abstract: An apparatus for mixing a cement slurry with a glass fiber in order to produce a glass fiber reinforced cement, including a spray gun, apparatus for cutting the glass fiber and apparatus for feeding the cut fibers to the spray gun. The spray gun comprises a glass fiber supply passage, a cement slurry supply passage, an air introduction passage, a plurality of air introduction holes communicated with the air introduction passage for injecting compressed air into the cement slurry supply passage and a closing element having at least two injection holes communicated with the cement slurry supply passage. The cement slurry is injected together with the compressed air through the injection holes and is mixed with the cut glass fibers discharged from a discharge opening of the fiber supply passage.