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SJ5-2700（2600、3200、3600、3800）Five-Layer Co-Extrusion (POF) Film Blowing Unit

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SJ5-2700（2600、3200、3600、3800）Five-Layer Co-Extrusion (POF) Film Blowing Unit

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Plastic Film Production Line

This is a kind of heat shrinkable film blowing unit with five-layer co-extrusion two-way secondary heating double bubble tube, in which the raw material is transported automatically to the independent extruder ->composition of mold head->->external cooling water ring sizing->air supply->dewatering of tube blank->first tensile traction ->guide-> second tensile traction control->heating of blank tube->gauge->blow up->stabilize film bubble ->infrared monitoring-> Herringbone plate film bubble flattening->third traction->hot roller shaping->splitting->fourth tensile traction control->independent gripping rim equidistant shaftless rotating winding->automatic control of rolling diameter. The film layers are structured by A/B/C/D/E

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Product serial number:

SJ5-（2600、2700、3200、3600、3800）

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Product description

Parameters

I.General

II. Main technical parameters

1. Production folding diameter of product film: 2300 ~ 2400 mm
2. Range of product film thickness: 0.010 ~ 0.035mm Thickness difference: ±<12%
3. Range of product drawing ratio: 5:3 ~ 5:6
4. Raw materials: HomoPP, copoPP, LLDPE, mLLDPE.
5. Maximum extrusion capacity: 350kg/h
6. Acceptance output: At least 320kg/h Thickness 15-19um
7. Five-layer co-extrusion
8. Extruder: Ф70/200/30:1/960/22kw at layers A\E
Ф75/200/30:1/960/30kw at layers B\C\D
9. Length of wind-up traction roller: 2700mm
10. Maximum winding speed: 110M/min
11. Maximum winding diameter: Ф 650 mm core 6 inches x2600mm shaft-free
12. Height of control tower: About 19500mm; height of second drawing roller: 17800mm
13. Installed capacity: 500kw; average power: 150kw
14. Overall weight of machine: 88 tons
15. Self-provided by the user: Incoming cable in front of electric cabinet of machine, compressed air, chilled water

III. Main configurations

(I) Five-layer co-extrusion composite mold head system
1. Diameter of mouth mold: Ф300 mm
2. Clearance of mouth mold: 1.6mm
3. Form of structure: Parallel(stack up) taper spiral internal composite mold head
4. Thickness tolerance of mold head: 10%
5. Heating power: Six-area heating power 34KW
6. Material: 40cr
7. Temperature control mode: Japanese Fushi module temperature control
8. Tube blank thickness adjustment method: 36-point rough adjustment, 36-point fine-adjustment jacking mode

(II) Extruder system
1. Three Ф75 single-screw extruders; two Ф70 single screw extruders
Ratio of screw length to long diameter Ф75 x 30:1; Ф70 x 30:1
2. Material of screw barrel: 38CrMoAlA
3. Processing mode for screw barrel: Tempering, fine grinding, nitriding, polishing
4. Structure form of screw: Barrier mixed head
5. Screw heating mode: Ceramic heating, power of 16.2KW for Ф 75 screw, 15KW for Ф70 screw, air cooling.
6. Temperature control mode: Japanese Fuji temperature control module
7. Screen change mode: hydraulic rapid change of screen
8. Feeding mode: Automatic feeding, alarm for lack of materials
9. Form of reducer: Double-stage high-strength hard tooth surface gear reducer, enhanced thrust bearing, forced cooling and lubrication by oil pump circulation.
10. Display of pressure: High temperature melt pressure sensor
11. Power of drive motor power: Ф75 extruder: 30 kw x 3 Siemens motor, Inovance frequency converter
Ф70 extruder: 22 KW x 2 Siemens motor, Inovance frequency converter
12. Speed regulation mode: Variable frequency stepless speed regulation. Sew reducer motor, Inovance frequency converter
13. One set of large platform of main engine -- Made by welding of section steel, which can be disassembled.

(III) First film bubble (tube blank) blowing film molding system
1. One set of automatic control system for tube blank diameter -- Ultrasonic sensing, SMC proportional electronic control valve
2. Cooling water ring: One set of Ф308 mm stainless steel water ring
3. Herringbone guide film plate: Stainless steel plate, angle adjustable

(IV) First and second traction system
1. Diameter of traction roller: Ф270 mm
2. Length of traction roller: 600mm
3. Clamping mode for traction roller: Pneumatic clamping
4. Motor power: 2.2KW SEW
5. Mode of speed regulation: variable frequency stepless speed regulation
6. Water ring lifting system: Electric lifting
7. Velocity of traction line: 0-25m/min

(V) Three-stage five-section temperature control for oven
1. For each set of small ovens, it is 324x650w, temperature control for 3 sections in 8 areas
2. For each set in shaping section, it is64x3x650w+28x2x650w, temperature control for 2 sections in 2 areas
3. One set of air rings at oven mouth, variable frequency speed regulation
4. One set of six pneumatic center wheels at oven mouth
5. Infrared temperature measuring device for secondary heating
6. One set of electric bubble regulation device

(VI) Three cooling air rings: Variable frequency speed regulation

(VII) Winding machine
1. Width of roller: 2700
2. A-frame two-way four-stage electric adjustment
3. One set of feeding rollers with three traction clamps, two hot setting rollers, one set of feeding rollers with four traction clamps
4. Automatic tension compensation
5. 2-station 4-axis winding(1 -station 2-axis winding)
6. Equidistant control
7. Changing by turnover
8. Cutting knife
9. Auxiliary SEW-brand gear reduction motor for main drive HANDSOME

(VIII). One set of NDC infrared thickness measuring instrument (provided by the user)
(IX). Main electrical and pneumatic parts: Schneider switch relay, Hangzhou xizi module, Fuji temperature control module, Inovance frequency converter, Sick encoder, Weinview touch screen, SMC pneumatic parts, AIRTAC cylinder.
(X) Each operating point is equipped with safety switch and photoelectric switch.

IV. Lead time: Within 100days after receiving the deposit