SK277696B6 - Apparatus for high-speeding spool spinning of synthetic fibres - Google Patents

Abstract

Between spool spinning block (104) and winding head (108) is placed coordinating adjustable hollow body (106) which is provided by longitudinal crack with adjustable working width and surface, limited by these longitudinal crack covered by equally layed grooves for example stainless fabric and hollow body (107) with outlet opening. Placing (106) and (107) is limited by distances.

Description

Technical field

The invention relates to a device for high-speed spinning of synthetic fibers by a shortened process.

BACKGROUND OF THE INVENTION

The prior art method of producing synthetic fibers by a high-speed process in which the melt-spinning stage aggregates with fiber pre-orientation is carried out on conventional production lines with separate equipment for extrusion, polymer distribution, fiber cooling and winding, either by means of galetics or metal-free. The change is in the equipment of individual nodes or in their deployment. According to JP / A / 275 706/88, the cooling zone below the spinning block is provided with a conical heating of about 40 to 200 mm below the nozzle, thereby suppressing the accumulation of fibers on the nozzle. According to JP / A / 148 808/89, the polyester fibers, after leaving the spinneret, pass through a heated column of more than 200 mm in length with a gas having a temperature of at least 250 ° C and coiled at a speed of 8500 m / min. 86, in turn, protects the preparation of the polymer melt fiber through the spinneret, the cooling zone, the preparation and the elongation on the roll. Higher quality is achieved by deflecting the fiber guide 90 to 45 ° from the cylinder axis in the region between the fiber cooling zone to the 2nd order transition temperature and the 3500 mm zone below the nozzle. The fiber is prepared using rollers placed opposite each other. The forming of the fibers is in the first stage together with the fixation by the preparation rollers, in the second stage on the roll.

A more compact distribution of the individual nodes is prevented by the problem of cooling at high winding speeds and by a suitable preparation method prior to winding.

A more preferred arrangement of the individual nodes is dealt with in EP 117 215. Polyethylene terephthalate fibers are routed directly from the spinnerette to the bobbin with cooling at high speed. At a distance of 1] from the spinneret, the fibers are prepared provided that ₁₀ is at least equal to 1 _t and this is at least equal to ₁₀ + 300 mm, where ₁₀ is the point where the bire derivative curve as a function of coil to tube distance passes maximum. The maximum spool-to-die distance is 1000 to 2000 mm, preferably 1770 mm, winding speed above 4500 m / min, preferably 5800 m / min.

The placement of individual technological nodes on the equipment is demanding and does not allow a compatible design. This increases the demands on air conditioning, serviceability and increases energy consumption. With the exception of the cited EP, they do not solve the main technological problem, namely the direct winding of the fibers onto the reel at high speeds while ensuring trouble-free operation and the correct construction of the winding.

SUMMARY OF THE INVENTION

SUMMARY OF THE INVENTION The present invention relates to an apparatus for high-speed spinning of synthetic fibers comprising a container, an extruder, a branch line, a spinning block, a cooling shaft and a winding head which are arranged one after the other with a coordinate adjustable hollow body between the spinning block and the winding head. which is provided with a longitudinal slot with an adjustable working width and a surface defined by the longitudinal slot, covered with uniformly spaced grooves, for example a stainless steel fabric and a hollow body with an outlet opening. The coordinate-adjustable hollow body is located at a distance of 500 to 1500 mm from the spinning block 5, for example in a cooling shaft, and the fixed hollow body is located at a distance of 800 mm from the winding head.

By incorporating the coordinate-adjustable hollow body and the fixed hollow body between the spinning block and the winding head 10, a high stability of the spinning process and a high uniformity of the pre-oriented fiber is achieved. Elimination of friction leads ensures correct voltage conditions without damaging the fiber. The shortened path between the spinning block and the winding head 15 provides reduced resistance to ambient air at high take-off speeds, thereby reducing stress, which would affect the flow deformation. The advantages of the compact solution are higher spinning capacity, lowering of 20 temperatures, reduction of the amount of air-conditioned air, costs, energy consumption and ease of operation.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a front elevational view of the device assembly; and FIG. 2 is a coordinate adjustable hollow body 106 and a fixed hollow body 107.

DETAILED DESCRIPTION OF THE INVENTION

The apparatus for high-speed spinning of the synthetic fibers of the synthetic fibers according to the invention consists of a reservoir or a casing. of the dryer 101, extruder 102, distribution branch 103 with spinning blocks 104, cooling shaft 105, and winding head 108, the individual parts being disposed one behind the other. Between the spinning block 104 and the winding head 108, a coordinate adjustable hollow body 116 is located 500 to 1500 mm from the spinning block 104, for example, in a cooling shaft 105 which is provided with a longitudinal slot 116 with adjustable working width and surface defined by this longitudinal a slot covered by uniformly spaced grooves, for example stainless steel fabric 126 and a fixed hollow body 107 at a distance of 800 mm from the winding head 108, provided with an outlet opening 117.

The polymer from the container 101 passes to the extruder 102 where it is melted, homogenized, or melted. mixed with color concentrates. Upon exit from the spinning blocks, which are at least 4 in the branch line 103 providing additional homogenization, uniform heating and polymer melt dosing, the melt passes through the spinning nozzles under which the fiber is formed by cooling and guiding through the coordinate adjustable hollow body 106 and fixed hollow body 107 The coordinate-adjustable hollow body 106 may be positioned, for example, in a cooling shaft 105. It allows through uniformly spaced grooves on the surface 106, e.g. the stainless steel fabric 126, such that the fiber guide is such that the individual capillaries are evenly spaced, do not overlap, thereby ensuring their uniform cooling and preparation. The preparation is fed through the longitudinal slot 116. The fixed hollow body 107 provides direct guidance of the filament to the winding head 108, while also serving as a preparation nozzle, allowing the outflow opening 117.

Industrial usability

The device according to the invention has been verified in particular in the production of polypropylene fibers, spinning at 4 and 8 streams at winding speeds of 3200 and 3550 m / min. The production of polyethylene terephthalate and polyamide fibers has been verified at speeds up to 4650 m / min. success in the fiber industry in the production of synthetic fibers.

Claims (3)

PATENT CLAIMS An apparatus for high speed spinning of synthetic fibers consisting of a container, an extruder, a branch line, a spinning block, a cooling shaft and a winding head, the individual parts being arranged one after the other, characterized in that between the spinning block (104) and the winding block. a coordinate adjustable hollow body (106) is provided with a head (108), which is provided with a longitudinal slot (116) with an adjustable working width and a surface defined by this longitudinal slot covered with uniformly spaced grooves such as stainless steel (126); a body (107) with an outlet opening (117). Device according to claim 1, characterized in that the coordinate-adjustable hollow body (106) is located at a distance of 500 to 1500 mm from the spinning block (104), for example in a cooling shaft (105). Device according to claim 1, characterized in that the fixed hollow body (107) is located at a distance of 800 mm from the winding head (108).