Abstract:
The air mixer defined herein serves for static mixing of a heated air stream in a flow channel of a circulated air stream upstream of a heat treatment chamber for drying textile goods or tissue webs for example. For this purpose the air mixer is provided with air mixing parts that consist of hollow bodies arranged in the flow cross section of the first air stream with spaces between them, said bodies being provided to receive and conduct the second air stream with inlet openings and outlet nozzles located endwise on one side.
Abstract:
Fiber fleeces made entirely of pure artificial (polymeric) fibers or mixed with natural fibers have to be solidified after formation by carding, or laying only in the case of filament fleeces. In the fleece according to the invention, which is particularly bulky and thus needs to be solidified, neither lower-melting binding fibers nor chemical binding agents are used. Also, the mechanical needling process which uses needles is eliminated because this reduces the bulk too severely. The desired bulk is retained by producing solidification by a single water needling process (when performed on one side), with the desired water pressure being no higher than 60 bars, preferably 20-30 bars.
Abstract:
A jet bar on a device for producing streams of liquid for jet interweaving of the fibers of a fiber web guided along the bar includes an upper part that extends over the operating width of the fiber web and a lower part fastened thereto in a liquid-tight manner. In the upper part and extending over its length, a pressure chamber is located which receives liquid that is under pressure, endwise for example. Parallel thereto, with an intermediate partition, a pressure distribution chamber is provided which is connected with the pressure chamber by throughflow holes for liquid extending through the intermediate partition. A jet sheet with holes for forming jets of liquid is mounted in a liquid-tight fashion on the lower part. In order to achieve a better equalization of the pressurized fluid entering the pressure distribution chamber, the pressure distribution chamber terminates in an area opposite the liquid throughflow holes in a slot that is narrow by comparison with the cross section of the pressure distribution chamber, said slot terminating close to or in proximity to holes in the jet sheet. The jet sheet is mounted in a liquid-tight fashion by means of a sealing O-ring. This O-ring can be replaced without disassembling the lower part from the upper part.
Abstract:
Textile webs that are to be dyed, printed, or otherwise finished must be fed to such a treatment process in a clean condition. For continuous cleaning without large apparatus and without environmental impact, the pile of the textile web is saturated with a liquid containing washing-active substances and compounds which are caused to foam under the effects of heat especially under steam. After steaming, the foam that is produced in the steam for cleaning is vacuumed away with the contaminants it contains.
Abstract:
In a screen drum device with a fan mounted endwise for generating suction through the screen drum surface, in front of a screen drum jacket, a baffle cover is usually provided. This baffle cover generates in a baffle chamber in front of the baffle cover, the accumulated pressure which is required for uniform processing of a web of material. In order to be able to handle optimally webs of different widths on the screen drum, the baffle cover in the vicinity of the narrow width of the goods is made so that it can be either removed completely or is given an opening mechanism, or the baffle cover has an additional screen cover located parallel thereto and displaceable with respect to the baffle cover. The holes in the baffle cover and screen cover are so arranged with respect to one another that when displacement by about one hole division takes place, most of the holes in the baffle cover can be covered by the ribs or non-permeable portions adjacent to the holes of the screen cover in order to be able to dry the material in the remaining part.
Abstract:
A predrying tower serves for heat-treating a vertically conducted length of material. In addition to infrared heating rods arranged on each side of the length of material and over the treatment height of the drying tower, respectively one air supply box is arranged bilaterally of the length of material. The air supply box extends over the height and width of the drying tower, with air slots oriented to direct air toward the length of material. In order to obtain a circulating air system, the air is exhausted above the treatment zone over the width of the length of material and conducted to a fan arranged at the end face of the drying tower, this fan blowing the treatment air downwardly in an air recycle chamber arranged likewise at the end face of the drying tower. An air ramming or air collecting chamber is arranged on the underside of the drying tower over the operating width, wherein the accelerated air is laterally introduced and exits upwardly via a heating device into the air conducting box.
Abstract:
The process for rendering wool sliver shrinkproof involves complete wetting of at least one laterally unguided wool sliver with a chlorinating liquor at ambient temperature wherein the liquor is applied to the sliver with a four- to sevenfold excess. The sliver is conducted immediately thereafter through a guide slot, together with the applied excess quantity of liquid; the complete wetting of the fibers of the sliver with the chlorinating liquor is effected in this guide slot by separating the wool sliver from possible air occlusions. Subsequently thereto, the sliver is accompanied by the liquor through a small-volume guide channel, to be squeezed out following the chlorine treatment. The apparatus has a pair of squeeze rolls, the cylinders of which are arranged to be spaced apart to form a guide slot and are rotatably mounted, these squeeze rolls being associated immediately thereabove with spray means to supply the chlorinating liquor necessary for complete wetting.
Abstract:
A liquid applicator for a wide length of material, operating according to the overflow principle, has a construction which ensures uniform dye application over the operating width. This applicator now makes it possible to effect quick color change, because the capacity of the applicator is smaller than 5 l/m and, by a special arrangement of liquid-distributing chambers in the applicator, a uniform liquid film exhibiting laminar flow is ensured.
Abstract:
The invention relates to a process and apparatus for wrapping square bales, especially fiber bales, with the aid of strip-shaped baling material, preferably baling wire. It is known to compress fibers, after having been manufactured as raw material, into fiber bales and to hold the latter together with the aid of baling wire. In this process, several baling wires are placed in individual turns around the bale and joined at their ends. This type of wrapping is complicated and is to be simplified.The basic aspect of the invention resides in that the baling wire is placed continuously around the bale and that the wire turns extend, on at least two mutually opposed bale sides, in parallel to one another as well as in parallel to bale edges.
Abstract:
The novel product consists of hydrodynamically bonded non-woven layers of which at least four layers are stacked and are than joined to one another by only using hard water jets.