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Cutting and rewinding equipment with automatic roll changer LTS – PWS 1600

Санкт-Петербург Purpose: The equipment is designed for slitting, rewinding of roll materials. Main components Unwinder Component Description Qty Machine stand With side plates, crossheads, support bars, support plates, bolted, feet 1 Pneumatic unwinding shaft Steel, diameter 76 mm, with spaced clamping elements 1 Roll up from the floor Hydraulic, maximum permissible weight 1000 kg 1 Brake system Electro-pneumatic brake system 1 Adjusting roller, steel, diameter 70 mm, free rotation 1 Rewinder Component Description Quantity Machine stand With side plates, cross heads, support bars, support plates, with bolted connections, on legs 1 Support rollers, diameter 70 mm, with free rotation 4 Driving rollers, diameter 100 mm 2 Winding type Carousel, with automatic roll change. At the end of winding, the rollers are pushed onto the receiving table Vacuum vacuum cleaner 1.5 kW, for fixing the cut material Main drive AIR 3 kW 1 Sensor of footage Electronic 1 Drive of the carousel winder AIR 5 kW Knife holders With knives attachment, 0.2 mm, “dovetail” design tail ”10 A set of protective sheets and guards 2 Control cabinet All control elements of the drive and technological process are installed in the control cabinet. The power supply to the machine and the control cabinet is made from one side. All electronic and electrical components are commercially available. The control unit and the power supply unit are separated. The design of the control cabinet complies with the standard directives and standards. The front of the control cabinet has a hinged door and an operator panel.

1 000 000,00 CZK/pcs 1 pcs

Spunbond Extruder LT-SPN90 / 1600

Санкт-Петербург Applications The equipment is used for the production of spunbond nonwovens for medical care, hygiene, agriculture, packaging, upholstery, construction. Detailed description 1. Extrusion module The extrusion module is the initial stage of spunbond production. The loading funnel of the module is supplied with polypropylene granules with a MFR of 35-45 units from the main Russian manufacturers. From the loading zone, the pellets enter the screw pair. The screw pair is an Archimedes screw with a shell, the closest household analogue is the shaft of a meat grinder. Inside the screw pair, under the influence of pressure and temperature, polypropylene gradually melts and forms a melt. By rotating the screw, the molten material is pushed forward along the axis of the extrusion module. At the end of the module, the melt becomes homogeneous and has a pressure of 40-50 MPa. 1.1 Screw diameter: Φ90mm; 1.2 L / D ratio: 30: 1 1.3 Main drive: 75 kW, 1.4 Gearbox with thrust unit: RG-450 1.5 Frequency converter: ESQ 1.6 Heaters: Cast aluminum with forced cooling 1.7 Number of heating zones: 6 1.8 Heaters power: 30 kW. 2. Melt filter During the production, repacking and loading of polypropylene granules into the extrusion module, dust particles, packing fibers and other contaminants will inevitably get inside. To avoid contamination of further units, filtering devices are used. Inside the melt filter, the molten polypropylene stream is split into two parts and passed through the twill mesh. Unnecessary contamination remains on the meshes, the melt passes on. As the meshes become dirty, the filter throughput decreases, so the meshes must be periodically changed. 2.1 Candle type 2.2 Filtration area 2m2 2.3 Maximum pressure 10 MPa 2.4 Pressure sensor after the filter to maintain automatic control of the screw speed 2.5 Heating system by circulating oil from a centralized unit 3. Melt supply pump For the production of high-quality spunbond, it is necessary to maintain a stable pressure of the molten material during fiber formation. Therefore, a gear pump is installed in front of the forming tools, which drives the melt through itself and compensates for pressure drops from the operation of the extrusion module and the melt filter. 3.1 Volumetric capacity 200 dm3 per hour 3.2 Gear pump type 3.3 Maximum pressure 250 MPa 3.4 Operating temperature up to 300 degrees C 4. Extrusion head Liutira The extrusion head is the first stage of fiber formation. In it, the initial distribution of the melt occurs from a channel with a diameter of 90 mm into a cavity with a width of 1800 mm. It is important to ensure that the material flows at the same speed over the entire width. For this, the design of the head is calculated in computer-aided design systems, and then tested on test runs. Also in the head are filter nets for re-filtration of polypropylene. 4.1 Adapter: Liutira. 4.2 Temperature control method: flow rate of heating medium 4.3 Head width: 1700mm 4.4 Working width: 1600 mm 4.5 Number of heating zones: 12 per die 5. Liutira fiber spinning die The die is made of 2 perforated steel plates. Passing through it, the melt is divided into many small streams and squeezed out. The diameter and position of the holes have a significant impact on the physical properties of the final product. 5.1 Diameter of the first inlet plate 5 mm 5.2 Diameter of the first outlet plate 2.5 mm 5.3 Diameter of the first inlet plate 2.5 mm 5.4 Diameter of the first outlet plate 0.45 mm 5.5 Grinding planes 5.6 Arrangement of holes in rows with a shift of 0.5 steps 6. Monomer removal unit Polypropylene granules are produced at chemical plants using various technologies. The main reaction is the polymerization of propylene. Unfortunately, the polymerization process never happens one hundred percent. Therefore, commercial polypropylene granules always contain residues of unreacted compounds and other substances. Upon melting, these substances pass into a liquid or gas phase and can condense at the outlet of the die. They are removed from the extrusion zone by drawing. 6.1 Fan power 11 kW 7. Crystallization, orientation and drawing system After leaving the spinneret, it is necessary to cool the fibers, increase the strength and reduce the diameter. All these operations are performed in the cooling channel. Air is supplied inside the channel through a T-shaped adapter and goes down together with the fibers. An orientation effect is used to strengthen the fibers. When the polymer is stretched, some of its molecules are stretched in the direction of application of the force and increase the tensile strength in this direction. In the lower part of the cooling channel there is a Venturi nozzle, a channel of variable cross-section. When passing through it, the speed of air increases to 3-4 speeds of sound. After the venturi nozzle, the fibers become thinner and stronger. 7.1 Air flow speed 0.5-1 m / s 7.2 Fan drive power 45 kW 7.3 Exhaust through an adjustable Venturi nozzle 8. Receiving conveyor: The receiving conveyor is a looped fiberglass mesh on which the fibers land. The air passes through the mesh and is recovered by fans under the conveyor. The conveyor forms the initial web in the form of loose individual fibers in a thin layer. 8.1 Continuous intake conveyor with air cooling 1800mm 8.2 The cooling system has an additional circuit for uniform cooling regulation. 8.3 The conveyor has its own frequency controlled drive. 8.4 Conveyor material: fiberglass mesh. 8.5 Broach shafts D 100 * 1900 mm, polyurethane coating. 8.6 The drive of the broach is an asynchronous motor 7.5 kW with a worm gear. 8.7 The conveyor has an independent drive for up / down movement by 100 mm and forward / backward by 1000 mm. 9. Thermal bonding calender. Heated calenders are used to bond the fibers. These are two shafts, one of them has protrusions that push through the layer of fibers and melt them at the place where pressure is applied. It is the size and pattern of the protrusions that determine the final pattern on the spunbond. 9.1 Number of shafts 2 9.2 Type of oil heating 9.3 Shaft diameter 350 mm 9.4 Cross-fastening pattern 9.5 Automatic synchronization of rotation speed with the winding unit 10. Automatic contact rewinder. The winder converts the continuous web from the calenders into a roll wound on a cardboard core. After winding, the spunbond roll is sent for cutting to size or packaged for shipment to the client. 10.1 Type of winding: contact with automatic change of the winding shaft. Two broach shafts D 100 * 2000 mm Winding on a pneumatic roll, 2 pcs. 10.2 Max winding width: 1600 mm. 10.3 The winder drive is independent by means of a 7.5 kW asynchronous motor through a reduction gear. 10.4 Rewinder motor control via ESQ frequency converter. 10.5 Automatic cutting and shaft change. 11. Control system 11.1 Temperature control: automatic PID controllers. 11.2 Controlling the melt pressure on the extrusion module: automatic PID controllers. 11.3 Change of operating parameters and control is carried out through the touch control panel. 11.4 Control panel in Russian. 11.5 The programmable logic controller implements the idea of maintaining the operating parameters in automatic mode. Also responsible for the interaction with the touch panel interface The set includes an operating manual in Russian, an electrical diagram, a pneumatic diagram, an oil supply and circulation diagram, a warranty certificate, a set of consumables based on one year of operation.

5 030 000,00 CZK/pcs 1 pcs

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