The invention relates to a method and an apparatus for feeding an installation with fibres, which installation is fed with fibre tufts, the fibre tufts are opened at least partially and fed by means of a feed apparatus to a pneumatic feeding installation, which guides the fibres into the reservoir of at least one fibre-processing machine, especially a flat card, roller card, opener or cleaner.

The invention is characterised in that, by means of a regulating circuit into which the actual pressure values measured and further processed in the pneumatic feeding installation are introduced, and into which the mass flow of the further processed fibres measured and further processed at at least one fibre-processing machine is introduced, the optimal operating point of the installation is determined by means of a regulating algorithm, and a signal is passed to an actuator of the feed apparatus for regulating the amount of fibre tufts.

The invention relates to a method and an apparatus for feeding an installation with fibres, which installation is fed with fibre tufts, the fibre tufts are opened at least partially and fed by means of a feed apparatus to a pneumatic feeding installation, which guides the fibres into the reservoir of at least one fibre-processing machine, especially a flat card, roller card, opener or cleaner.

The invention is characterised in that, by means of a regulating circuit into which the actual pressure values measured and further processed in the pneumatic feeding installation are introduced, and into which the mass flow of the further processed fibres measured and further processed at at least one fibre-processing machine is introduced, the optimal operating point of the installation is determined by means of a regulating algorithm, and a signal is passed to an actuator of the feed apparatus for regulating the amount of fibre tufts.

The invention relates to a process for calibrating the loading force of a breaker element (3) of a bale opener (1) before the breaking process of a bale group (4) and on a corresponding bale opener (1). In doing so, the breaker element (3) is calibrated so as to exclude any signal distortion influences and to ensure a stable and reliable scanning of the bale groups (4) by measuring the loading force. During the longitudinal movement of the breaker element (3) along the bale group (4), the force is measured continuously with the calibrated force sensor (12) and there is a lowering movement of the breaker element (3) when a lower loading force is reached, and there is an upward lifting movement when an upper loading force is reached.

The invention relates to a process for calibrating the loading force of a breaker element (3) of a bale opener (1) before the breaking process of a bale group (4) and on a corresponding bale opener (1). In doing so, the breaker element (3) is calibrated so as to exclude any signal distortion influences and to ensure a stable and reliable scanning of the bale groups (4) by measuring the loading force. During the longitudinal movement of the breaker element (3) along the bale group (4), the force is measured continuously with the calibrated force sensor (12) and there is a lowering movement of the breaker element (3) when a lower loading force is reached, and there is an upward lifting movement when an upper loading force is reached.

A stapled melt spinning method for producing nonwoven fabrics with hygroscopic metastatic feature. Firstly, fuse bio-polyamide 6,10 into melt, extrude and spin it out spin heads of extruder into filaments, cool, draw and collect filaments into tow, then extend, cut and card the filaments into the staples, and spread the staples on a conveyer to form fibrous web. Next, blend and dissolve pulp by N-methylmorpholine N-oxide (NMMO) dissolving solvent, dehydrate it to form dope, and extrude and spin it out spin heads of extruder into filaments, then cool, draw and collect filaments into tow, and extend, cut and card filaments into staples, then overlay the staples over existing fibrous web to form a composite fibrous web of bio-polyamide 6,10 and cellulose filaments. Finally, coagulate, regenerate and convert fibrous composite of bio-polyamide 6,10 and natural cellulose into nonwoven fabric with hygroscopic metastatic feature by hydro-entangled needle punching, drying, winding-up processes.

A stapled melt spinning method for producing nonwoven fabrics with hygroscopic metastatic feature. Firstly, fuse bio-polyamide 6,10 into melt, extrude and spin it out spin heads of extruder into filaments, cool, draw and collect filaments into tow, then extend, cut and card the filaments into the staples, and spread the staples on a conveyer to form fibrous web. Next, blend and dissolve pulp by N-methylmorpholine N-oxide (NMMO) dissolving solvent, dehydrate it to form dope, and extrude and spin it out spin heads of extruder into filaments, then cool, draw and collect filaments into tow, and extend, cut and card filaments into staples, then overlay the staples over existing fibrous web to form a composite fibrous web of bio-polyamide 6,10 and cellulose filaments. Finally, coagulate, regenerate and convert fibrous composite of bio-polyamide 6,10 and natural cellulose into nonwoven fabric with hygroscopic metastatic feature by hydro-entangled needle punching, drying, winding-up processes.

A method and associated device and system are provided for recording trash in a fiber preparation system having a plurality of cleaning points and a transport line that is connected to the cleaning points and is guided into a central container connected to a negative pressure source for generating transport air. The trash is suctioned from each cleaning point through the transport line with the transport air to the central container and is feed separately from each cleaning point to the central container. In the central container, the trash is separated from the transport air and transferred into a scale for weighing. With the trash located on the scale, an optical recording of the trash is made with a camera directed to an interior of the scale.

An apparatus 200 and method for selectively injecting fibre material from multiple chambers into a single chamber in blow room of a spinning facility is disclosed, which use short duration bursts of pressurized gaseous fluid from nozzles 208 located adjacent to openings 206 provided in each of the plurality of chambers 202, each chamber 202 holding a different type/batch of fibre material, to evacuate predetermined quantities of fibre materials from different chambers 202, and eject the evacuated material into a mixing chamber 204. Duration/frequency of the short duration bursts is controlled to evacuate the predetermined quantities from different chambers. The bursts of the pressurized gaseous fluid also enable opening of the fibre material and spreading the opened fibres in to the mixing chamber 204 resulting in cleaning and better mixing of the fibres.

An apparatus 200 and method for selectively injecting fibre material from multiple chambers into a single chamber in blow room of a spinning facility is disclosed, which use short duration bursts of pressurized gaseous fluid from nozzles 208 located adjacent to openings 206 provided in each of the plurality of chambers 202, each chamber 202 holding a different type/batch of fibre material, to evacuate predetermined quantities of fibre materials from different chambers 202, and eject the evacuated material into a mixing chamber 204. Duration/frequency of the short duration bursts is controlled to evacuate the predetermined quantities from different chambers. The bursts of the pressurized gaseous fluid also enable opening of the fibre material and spreading the opened fibres in to the mixing chamber 204 resulting in cleaning and better mixing of the fibres.

A device and method for regulating pressure in a flock feed include a storage device disposed for receipt of fiber flocks, an exhaust air fan having a drive, and a controller in communication with the drive. A filling level measurement device and a pressure measurement device are provided in the storage device. The controller is configured to regulate the drive to achieve a target pressure as sensed by the pressure measurement device that is based on a filling level of the fiber flocks determined by the filling level measurement device.