Abstract: Textile fabric composed of synthetic fibers is subjected to a gas phase fluorination in a fluorine/inert gas atmosphere having a fluorine concentration in the range from 0.1 to 10% in order that the synthetic fiber surfaces may be activated in such a way that they are able to react with organic or inorganic compounds. Thereafter, the fabric is coated with a fluorocopolymer which is free of adhesion promoters. Similarly, yarn composed of synthetic fibers is first gas phase fluorinated and thereafter coated with a fluorocopolymer. Sewing yarn or thread, having been gas phase fluorinated, is bonded by means of a fluoropolymer coating. The improved adhesion makes the coated materials useful for a wide range of industrial applications.

Abstract: Textile fabric composed of synthetic fibers is subjected to a gas phase fluorination in a fluorine/inert gas atmosphere having a fluorine concentration in the range from 0.1 to 10% in order that the synthetic fiber surfaces may be activated in such a way that they are able to react with organic or inorganic compounds. Thereafter, the fabric is coated with a fluorocopolymer which is free of adhesion promoters. Similarly, yarn composed of synthetic fibers is first gas phase fluorinated and thereafter coated with a fluorocopolymer. Sewing yarn or thread, having been gas phase fluorinated, is bonded by means of a fluoropolymer coating. The improved adhesion makes the coated materials useful for a wide range of industrial applications. Textile fabric composed of synthetic fibers is subjected to a gas phase fluorination in a fluorine/inert gas atmosphere having a fluorine concentration in the range from 0.

Abstract: A method and apparatus for the automatic characterization of mechanical and/or geometric properties of stable fiber sample comprises presenting stable fiber samples in a magazine. The stable fiber samples are clamped in place for analysis by the apparatus which characterizes the mechanical and/or geometric properties of the fiber samples.

Abstract: An apparatus and a method automatically charge a machine for characterizing mechanical and/or geometrical properties of staple fiber samples. The apparatus includes a plurality of clamping strips each having a plurality of clamps for receiving fiber samples, at least one reservoir for the clamping strips, and a transporter whereby the clamping strips or individual fiber samples are automatically brought from the reservoir into the machine. The method includes charging a plurality of clamping strips with fiber samples, introducing the charged clamping strips into a reservoir, and automatically bringing the individual clamping strips or individual fiber samples via a transporter from the reservoir into the machine.

Abstract: There are described a process and apparatus for measuring the degree of filament intermingling of an intermingled multifilament yarn. The intermingled yarn is moved through a self-conveying fluid jet (air jet). The yarn substantially fills out the jet channel and emerges from the jet in a virtually tensionless state. Owing to the pressure difference at the jet outlet, noncohesive yarn zones expand explosively in the manner of a balloon. After expansion, the yarn passes before a sensor means, preferably an electronic camera, which detects the lightness differences or light diffraction phenomena due to the yarn filaments and sends as a function thereof a signal to a signal processing means. The method of measurement of the invention makes it possible to obtain very accurate information about the nature of the intermingling (spot type or continuous) and also about the geometry of intermingling (for example number and spacing of intermingling nodes in the case of spot type intermingling).