Abstract: The present invention relates to a method and facility for preparing lignocellulosic biomass, in particular by means of water extraction and optionally particle-size refinement, for subsequent use particularly in a process of torrefaction, carbonization, pellet production, such as fuel pellets or soil enhancement pellets, or the manufacturing of building materials, or even the preparation of agri-food products, comprising centrifugation (100) of the biomass followed by attrition milling and drying (200).

Abstract: Systems, methods, and apparatus for conditioning bamboo or other types of vegetable cane are provided. In one aspect, the present technology provides a cane processing assembly for use with a substantially flattened sheet of bamboo culm or vegetable cane having a plurality of longitudinally oriented fiber bundles. The assembly comprises first and second conditioning rollers configured to apply pressure to the sheet that breaks at least some natural bonds connecting laterally adjacent fiber bundles in the sheet. The first and second conditioning rollers are adjustable relative to each other so as to vary the pressure applied to the sheet by the first and second conditioning rollers.

Abstract: Circular comb for a combing machine for combing textile fibers, comprising a base body with a center longitudinal axis, a peripheral surface and two end faces, a plurality of bar tacks, which are arranged on the peripheral surface of the base body and define a combing region of the circular comb, a plurality of fastening devices attached to the base body for the non-positive connection of one of the bar tacks in each case to the base body and unlocking units to release the non-positive connections, each unlocking unit having an unlocking device and an unlocking means to actuate the unlocking device, wherein the unlocking units are accessible from outside the combing region, in particular from at least one of the end faces, and an additional positive securing connection to secure the bar tacks is provided on the base body.

Abstract: In an apparatus for the fibre-sorting or fibre-selection of fibre material which is supplied by means of a supply device to a fibre-sorting device, and a mechanical device is present which generates a combing action to remove non-clamped constituents such as short fibres, a clamping element is present. Downstream of the supply device there are arranged at least two rotatably mounted rollers with clamping devices for the fibre bundles, and the device for generating a combing action is associated with a said roller, wherein for the suction of the supplied fibre bundles, at least one suction device is associated with the clamping devices in the region of the transfer of the fibre bundle from the supply device to the first roller and/or in the region of the transfer of the fibre material from the first roller to the second roller.

Abstract: Process for the mechanical transformation of a thread (F) of vegetable, animal or artificial or synthetic origin, characterized in that it includes abrading the thread (F) when the latter is supported in the air between two supports (55, 56).

Abstract: A textile pull roll cover is disclosed which has an exterior side with desired frictional characteristics for engagement with an advancing textile web. On its opposite side, the pull roll cover is affixed to a cylindrical outer surface of a textile pull roll by a repositionable pressure sensitive adhesive disposed therebetween. A method for making a textile pull roll is disclosed, as well as a method for changing a pull roll cover using repositionable pressure sensitive adhesive.

Abstract: Whereas in known needle rings the needles are of circular cross-section, the cross-section of the needles (1) the present needle ring (2) is equipped with is either oval or rectangular with flattened ends, or intermediate between these two shapes. The shorter dimension (1a) of the needle cross-section is to be arranged parallel to the axis of the ring. The needles (1) may be positioned perpendicularly in the ring or form an angle .alpha. up to 30.degree. with the radius (2b), while the angle .beta. at the tip should lie between 15.degree. and 45.degree.. The needles sit in round holes (3) the diameter of which is less than the width (1b) of the needles which in turn is approximately 4 to 6 times the thickness of the needles. Hence, the needle does not fully occupy the volume of the hole. Two channels (3b) remain open, which may be used for controlling the air flow effecting the fiber transport.

Abstract: An apparatus for drafting and parallelizing strands of fiber comprising three side-by-side rolls nested in three side-by-side troughs which conform to and are adjacent the bottoms of the three rolls. The rolls are rotated in the same direction at sequentially greater speeds. The first two rolls include fiber-combing teeth, and the third roll is composed of a smooth, rubber-like surface. The fibers pass sequentially around the bottoms of the three rolls through a very narrow gap between the rolls and troughs to emerge in a parallelized, drafted condition. The unit may be incorporated into a no-twist yarn system as the sole mechanism for drafting and parallelizing the fiber, to form no-twist yarn in a continuous manner; or be used in place of conventional drafting system.

Abstract: An aero-mechanical open-end spinning machine, in which feedstock fibers pass between the teeth of the combing roller and the teeth of a combing sector facing the combing roller, and are thereby paralleled prior to their entry into the air stream by which they are delivered to the spinning rotor.

Abstract: An apparatus and method of processing textile stock to achieve cleaning and opening by use of a retracting tooth processing cylinder is disclosed. Self doffing is achieved by means of each tooth folding from a positive rake to a negative rake and eventually disappearing to the surface of a rotating cylinder during each cycle of rotation.

Abstract: A series of roller pairs in the drafting zone of sliver drafting apparatus have toothed or needlelike projections. The projections are spaced circumferentially and axially of the rollers so that projections of cooperating rollers either within a pair or between rollers of adjacent pairs are periodically interdigitated, as seen axially of the rollers, in spaced relationship as the rollers rotate at constant angular velocity. The rollers carry toothed wheels engageable for positive drive without backlash by a toothed belt. The upper rollers of the pairs are driven by a common endless loop belt and the lower rollers by a second belt. Each belt passes over a spring-loaded jockey roller which tensions the belt and which can be moved against the spring force in response to overloading tension on the belt caused by retardation of roller rotation in response to excessive fibres between a roller pair. Such movement of the jockey roller actuates a limit switch to shut off the belt drive motor.

Abstract: Herein disclosed is an improved tooth structure adapted for those paired control rollers of a rotary drafting apparatus, which are positioned adjacent to the paired front or drafting rollers of the drafting apparatus. The tooth structure has each of its teeth so contoured that the angle contained in the back or trailing side between the front or leading-side face of the tooth and the tangent, which is taken in the backward direction from the leading edge of the particular tooth to the dedendum circle of the control roller where the tooth is formed, is preset equal to or larger than a right angle.