Abstract: A facility for forming a fibre batt, in particular nonwoven, provides a device for producing at least one fibre web, and a crosslapper which provides the fibre batt. The production device provides a carding drum and at least one doffer roller collecting the fibres on the drum and supplying the at least one web to at least one outfeed belt. The crosslapper provides an infeed belt for the introduction of the web in the crosslapper, which supplies the fibre batt formed of a stack of layers of the at least one web, and first control means of the profile of the thickness and/or of the area bulk density and/or of the bulk density of the web or of each web. A drafting means is arranged downstream of the outfeed belt of the production device and upstream of the infeed belt. Second control means may be provided to control drafting means.

Abstract: A conveyor system, comprising a first conveyor assembly having: an input end; an output end; and a conveyor belt arranged to convey an object from the input end toward the output end in a direction of travel. The conveyor system comprises a fluid projection mechanism, the fluid projection mechanism being arranged to provide a fluid suitable for providing a lifting force to a conveyed object as the conveyed object passes over the fluid projection mechanism.

Abstract: Cutting device for longitudinally cutting a film web, in particular a plastic film web, moved in a web plane in a transport direction into a plurality of film bands, wherein a first cutter bar provided with cutting blades is immersed with the cutting blades in a cutting position into the web plane. In order to replace the cutter bar, a second cutter bar provided with cutting blades may be immersed with its cutting blades into the web plane, wherein the first cutter bar may be moved from the cutting position into a transfer position outside of the web plane when the second cutter bar is immersed with its cutting blades into the web plane.

Abstract: The manufacture of fiberglass filtration media, and particularly paint arrestance fiberglass media, is disclosed. Fiberglass filtration media is formed in part by controlling the speed of a melter traversing a drum. The fiberglass media passes through rollers and water sprays before it enters a curing apparatus. Progressive density changes from the air intake side to the air exit side of the media result in increased filtration qualities.

Abstract: The manufacture of fiberglass filtration media, and particularly paint arrestance fiberglass media, is disclosed. Fiberglass filtration media is formed in part by controlling the speed of a melter traversing a drum. The fiberglass media passes through rollers and water sprays before it enters a curing apparatus. Progressive density changes from the air intake side to the air exit side of the media result in increased filtration qualities.

Abstract: The present invention relates to a method for the continuous production of laid staple fiber fabrics with aligned fiber orientation, in which method the laid fabrics are produced by continuous plaiting down of carded fiber web at defined laying angles onto a synchronized transport belt (1), wherein the carding machine (2) and plaiting means (3) arranged downstream of it are arranged at an acute angle with respect to the advancing direction of the transport belt. Said laid staple fiber fabrics are used for producing high-strength fiber-reinforced plastic composites, as are used in wind power plants, aircraft construction and the automotive industry. In particular in the loading direction, said composites have high composite strengths and rigidities, to which end a defined fiber orientation is required. In addition to a defined orientation of the finite fibers, the laid fabrics also have a defined mass per unit area.

Abstract: An absorbent material including a fibrous material having a plurality of individual fibers forming a fiber matrix, a plurality of absorbent fibers, wherein the plurality of absorbent fibers are impregnated within the fiber matrix by means of a needlepunch process.

Abstract: A device for transferring nonwoven material from a fleece-laying machine to a consolidation device having an endless circulating output conveyor belt of the fleece-laying machine for accepting card webs which are laid on the output conveyor belt from above by the fleece-laying machine, the laid card webs forming the nonwoven material. A first drive unit drives the output conveyor belt at variable speed. In addition, a second drive unit for driving the output conveyor belt at an essentially constant speed is provided at a point which, relative to the first drive unit, is closer to the consolidation device. A hanging storage buffer of the output conveyor belt is thus formed in a section of the output conveyor belt located between the first drive unit and the second drive unit.

Abstract: The fleece layer for laying down a card web to form a fleece has a cross-lapping upper carriage, through which the card web is guided; a cross-lapping laying carriage, through which the card web coming from the upper carriage is guided and which serves to lay the card web down onto an output conveyor belt, and at least two card web conveyor belts for guiding the card web to the upper carriage and from there to the laying carriage. An upper run of a first endless card web conveyor belt extends from the infeed area of the fleece layer to the upper carriage and serves as a support surface for the card web. A positionally variable pressing means is provided, which can be actuated to produce a variable card web buffer in the upper run of the first card web conveyor belt.

Abstract: A process for manufacturing a polymer fill, the method comprising the steps of blending polymer fibers to form a polymer fill, depositing the polymer fill onto a surface, orientating the polymer fibers in a desired orientation, heating the polymer fill, compressing the polymer fill and cooling the polymer fill. The surface carries the polymer fill from the blending step through the heating step, and wherein the polymer fill enters the compression step independent of the surface.

Abstract: A crosslapper receives a card web and folds it into a lap intended to be needle-punched or consolidated by other means. The web comprises zones which are more condensed, having a spectrum of orientation of fibres with a component parallel to the width of the web, alternating with less condensed zones having a longitudinal unidirectional spectrum of orientations. The zones which are less condensed are used to form the edge zones of the lap. The result is that the lap has different respective spectra of orientation which pre-compensate for the unwanted changes produced by the needle-punching or other consolidation which follows. A needle-punched lap is obtained having a uniform MD/CD ratio (relationship between longitudinal and respectively transverse tensile strengths) or having a sought profile of the MD/CD ratio across the width of the lap.

Abstract: The present invention relates to a process for making high loft, nonwoven material by providing either natural and/or synthetic fibers, providing a low melt binder fiber, mixing the low melt binder fiber and the natural and/or synthetic fibers to form a web, cross-lapping the web, drafting the web with a drafter, heating the drafted web to a temperature sufficient to melt the low melt binder fibers, and cooling the web thereby forming a structural nonwoven material. The nonwoven batt can be cross-lapped between 2 and 10 layers and when the batt is cooled and has structural rigidity, the tensile strength in the machine direction is at least 50% of the tensile strength in the cross-direction. The batt weight is in a range of 0.25 oz/ft2 to 2.0 oz/ft2. The low melt binder fibers comprise 10 to 30 wt. % of the nonwoven batt and the synthetic and/or natural fibers comprise about 70 to 90 wt. %.

Abstract: A non-woven fiber web laying apparatus including (1) a camel back cross lapper having a supply arm, a laying arm connected thereto, and two delivery transport belts guided in juxtaposed fashion from an infeed zone to a lower end of the layering arm and (2) an upstream web buffering apparatus adapted to hold a web between belts at least one of which is one of the two delivery transport belts, the apparatus sandwiching the fiber web substantially the entire path from the take-up site to the laying-arm lower end.

Abstract: Apparatus for variably buffering a web material, the apparatus having two endless transport belts including feed sections in which the belts are juxtaposed, and return sections, the feed and return sections being of varying lengths. In the feed sections, the belts move through a U-shaped path portion, commonly guided over a deflecting roller. In the return sections, the belts are guided through U-shaped path portions extending opposite to the U-shaped path portion of the feed sections, each belt wrapping separate deflecting rollers. The three deflecting rollers are rotatably supported on a common mounting frame movably held in a machine stand for compensated length variation of the feed and return portions.

Abstract: In a camel back cross lapper, a fiber web to be layered to form a fleece is guided from an infeed zone until its discharge in a layering zone in sandwiched manner between two transport belts extending over the arms of the cross lapper. The transport belts are extended over a layering zone on an output conveyor to cover the web freshly deposited onto the output conveyor to avoid the web from being affected by harmful aerodynamic effects created by the movement of the layering arm of the cross lapper. In an embodiment, a web buffer is combined with the cross lapper such manner that the transport belts extend through web buffer.

Abstract: A former head for dry forming fibrous tissue in which a fiber material is mixed with air introduced to at least one rotating drum in a former head by injection. The drum is provided internally with means for fluidizing the injected fibers simultaneously, enabling higher production capacity and an increased distribution quality of the fibers. This former head has high capacity and an increased width, preferably over four meters, which avoids natural oscillations in the needle rollers as they are substituted by slotted air nozzles. The nozzles extend along a whole length of the drum and have adjustable nozzle lips to regulate the amount of air and direction of the air-flow blown through the perforations of the drum. Surprisingly, the capacity of the former head is markedly higher than conventional devices and distribution quality also is markedly better than by high-speed operation of traditional machines.

Abstract: A plant for removing fines from fiber fluff. The plant includes a forming wire, a forming head which is placed above the forming wire and arranged for air-laying fiber fluff into a layer upon the forming wire, at least one channel for carrying, in a flow of air, fibers from a supply of fibers into the forming head, a suction box placed beneath the forming wire, at least one vacuum fan connected to the suction box for generating an air flow from the forming head, through the fluff, the forming wire, and the suction box to the at least one vacuum fan. The mesh count of the forming wire mainly allow only the fines contained in the fluff to pass through the forming wire. The troublesome and costly filtering of the water used in a hydroentangling process is advantageously eliminated when using fluff, which is freed from fines by means of the plant according to the invention. Air-laid webs produced of the fine-free fibers also have a high quality.

Abstract: In the manufacture of a fiber fleece with a nonwoven producing means and a fleece laying machine, which produces from a single or multi-layered nonwoven web contionuously discharged by the nonwoven producing means a fleece web having a thickness variable across the laying width, the nonwoven web is cyclically drawn on the way between the nonwoven producing means and the fleece laying machine at a fixedly determined location, said drawing depending on the laying movements of the fleece laying machine to form a fleece web of a regular cross sectional profile. Between a separate drawing equipment performing the drawing process and the inlet into the fleece laying machine, the nonwoven web may run through a separate, variable buffer storage, which adapts the speed fluctuations of the nonwoven web on the outlet side of the drawing equipment to the intake speed of the fleece laying machine.

Abstract: Specific nonwoven fabrics having a good hand, high strength both wet and dry, and very high absorbency are useful for disposable health care and commercial bedding material. These fabrics are composed of randomly entangled natural and synthetic fibers interconnected so that the individual fibers are held in place to form a coherent, stable, strong fabric having a high absorption capacity. The fabrics are cut and converted to the desired dimensions. Bottom coverings can include elastic strips that can be fastened for a close fit to beds, cribs, gurneys and the like, regardless of shape.

Abstract: A distributor layer moving in a reciprocating motion to deposit a web coming from a card, on an output apron to form thereon a lap designed for subsequent mechanical bonding. A front conveyor belt transporting the web up to a folding carriage and a rear conveyor belt for supporting the other surface of the web up to a depositor carriage are driven so as to have identical moving speeds in a pinching zone. In the folding carriage the web is deviated by less than 90 degrees to move in a down slope along a section, then a turning of more than 90 degrees, is first exposed, then is externally supported by a support structure. The pinching zone slopes slightly downwards. The web is likewise exposed for the turning in the folding carriage then with external support by an arrangement in a second angular surface.

Abstract: In a lap winding apparatus for producing a batt lap, the batt is wound onto a tube which is rotatable about a fixed axis and is driven by a revolving endless belt. The belt is arranged in a loop, formed between two deflecting rolls and is tensioned by a tensioning device. The tube which is rotatable about a fixed axis, as well as the two deflecting rolls are dimensioned, and positioned relative to each other, in such a manner that the loop at the beginning of the lap winding process embraces the tube over an initial minimum wrapping angle equal to, or larger than, 120° and preferentially equal to, or larger than, 180°. For generating a tensioning force depending on the lap diameter, the tensioning device is associated with a control device.

Abstract: An installation includes a carding machine (1), and a distributor-layer (2) depositing the card (1) web (6) in a reciprocating motion on a delivery belt (8) moving transversely. The resulting intermediate lap (16) is conveyed to a needling loom (3) to produce a consolidated lap (24). A measuring station (28) scans the consolidated lap (24) profile and transmits it to a processing unit (32) where the profile is compared to a set reference input by a terminal (33). The variations in width cause a corresponding modification in the width deposited by the distributor-layer (2) by a link (36). The local surface weight variations cause a corresponding modification of the controls applied to the carding machine (1) capable of longitudinally profiling the web (6). The invention is useful for controlling an installation for obtaining a finished product.

Abstract: A method for making an apertured nonwoven fabric includes the steps of: obtaining wet sheet from slurry containing 0.5˜20% by weight of fibrous component in water, which comprises, in turn, thermoplastic synthetic fibers having a length of 7˜30 mm and a fineness of 0.1˜0.8 d, and subjecting the wet sheet to a processing for fiber entangling by high velocity water jet streams and to a processing for aperture forming by aperture forming elements having predetermined configurations adapted to be followed by individual fibers.

Abstract: A textile fiber processing machine includes a device for forming a fiber web from a fiber lap; a device for advancing the fiber web to a web outputting device for discharging the web thereby in a direction of advance; and two cooperating calender rolls defining a nip receiving the web discharged by the web outputting device. The calender rolls are situated immediately adjacent the web outputting device downstream thereof as viewed in the direction of web advance. Further, a heating arrangement is provided for heating at least one of the calender rolls for thermo-bonding the web as it passes through the nip of the calender rolls.

Abstract: A carding machine or other web production device [(1)] supplies a crosslapper [(2)] with two elementary webs [(15a, 15b)] constituting a lappable web [(16)] which is deposited in a reciprocating manner on a transverse output belt [(26)]. In the device [(1) means of] adjustment of the speed of rotation of doffers [(13a, 13b)], of condensers [(17, 18)], of detachers [(19a, 19b)], of the drum [(4)] and/or of the feeder [(7)], and/or [means of] adjustment of the drum-doffer spacing affect the weight per unit area of the elementary web produced taking account of the weight per unit area desired at each point in the width of the fleece [(67)] to be formed on the output belt [(26)]. There is determined the delay length exhibited by each elementary web cross-section undergoing the adjustment of weight with respect to the section of lappable web in the process of being deposited.

Abstract: The invention concerns a stretcher comprising a carriage (21) subjected to a back-and-forward motion (2) for depositing in successive segments (2a . . . 2d) a web of fibres (2) on an outgoing conveyor (6) moving along a direction (9). In order to produce ranges of different plies in the transverse profile of the lap (4) formed on the outgoing conveyor (6) by the web deposited in mutually overlapping segments, the points of inversion of direction (21) in the backward and forward motion of the carriage are different. As a result the successive folds (2ab, 2cd; 2bc, 2da) of the same direction are differently positioned, and the number of web plies in the lap is not the same over the whole width of the lap. The invention is useful for streamlining the lap freely and accurately.