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2500 model 5-layer co extrusion production liquid outer packaging material blown film machine equipment
Liquid soft bags are mainly made of PE as the main raw material. There are three main types: soft milky white PE film. Black and white co extruded PE film. Hard high-temperature steaming PE film. Used for packaging soy sauce. Milk. Drinks. Herbal tea. Alcoholic beverages, medicines. Soy milk. Commonly used for automatic filling machine cylindrical materials. A conventional three-layer co extrusion blown film machine can produce this type of packaging material. Commonly used raw materials (ExxonMobil) and (Mitsui Materials, Japan). The outer layer needs to be resistant to high temperature cooking. The middle layer needs to be isolated from the carrier. The inner layer requires low-temperature heat sealing. The inner and outer layers should be heat sealed and easy to bond. The packaging liquid does not explode. Don't break the bag. A reasonable combination of high-performance raw materials and processing aids is required. At the same time, it is required that the hardware design structure of the machinery should also adapt to the processing of special raw materials. And the control of winding tension by electrical software. The liquid packaging blown film machine is a specialized model.
Considering the cost of raw materials. The film produced by a 5-layer co extrusion blown film unit is better than a 3-layer film. Performance improvement of about 30%. The cost of raw materials has been reduced by about 35%. In addition to producing liquid packaging film. It can also produce conventional PE universal materials and conventional vacuum bags. Due to the drawbacks of the blowing process. Can only be used for conventional vacuum film. Asymmetric barrier materials cannot be used. For example, a universal buffer air column bag.
An AIRBAG single tube gas column can withstand a weight of approximately 100kg
Production of liquid packaging material blown film machine equipment
Packaging advantages: Suitable for raw materials. LDPE.LLDPE.HDPE.MDLLPE.PA.TIE
Production of liquid packaging material blown film machine equipment
7、 Introduction to Equipment Configuration Form
Taking the 2500-JZD-H5 model as an example.
1. Maximum width of blown film folding pair 2250mm
2-Blown film thickness - single-layer 20um-120um
3- Thickness deviation<Online thickness measurement - Automatic air ring>5% -7%
4- Conservative value of extrusion output (IBC internal cooling+refrigeration cycle) -24 hours 7 tons. The specific production capacity depends on the width and thickness of the film.
Basic configuration
One 5 sets of single screw extruders
SJ65/30 host (37kw) A layer, first layer
SJ55/30 host (22KW) B layer, second layer
SJ55/30 host (22KW) C-layer, third layer
Production of liquid packaging material blown film machine equipment
SJ55/30 host (22KW) D-layer, fourth layer
SJ65/30 host (37KW) E-layer, fifth layer
1. Structure and layout of extruder: The gearbox is directly connected to the motor and placed at a 180 degree angle.
2. Length to diameter ratio L/D: uniformly 30:1
Drive motor: adopts vector three-phase asynchronous wideband asynchronous motor. Efficient and energy-saving. Stable torque. External cooling fan.
Gearbox: adopts 200 type. The gear material of the two-stage hard tooth surface gearbox is made of 20CrMnTi alloy steel, which is carburized
Quenching, with external circulating oil lubrication system
The barrel is made of high-quality alloy steel 38CrMoAIA through nitriding, which is corrosion-resistant and wear-resistant. The feeding section is longitudinally slotted
Screw type: PE adopts separation+barrier+mixing type, dual alloy spraying, corrosion-resistant and wear-resistant, good plasticizing effect, nylon material is used
Made of carbon steel material, with eccentric wave+shear+gradient structure (shared by PA and PE).
Quick screen changing device: Dual station manual quick screen changing device
8. Screw speed: 0-100 revolutions per minute;
Production of liquid packaging material blown film machine equipment
Barrel heating method: Nano heating coil, reduces workshop working temperature, saves energy and electricity by 50% compared to ordinary heating coils
Extruder heating section: Zone 6
Host temperature control method: module temperature control, Taiwan Yangming solid-state contactor
Cooling method for the barrel: zone over temperature control, using high-temperature resistant blowers to blow air in sections, and forced water cooling in the discharge section, which effectively avoids overheating
Bridge free phenomenon, uniform feeding
Hopper seat: Install weighing system
Internal pressure display device: equipped with a high-temperature melt pressure gauge to monitor the melt pressure inside the barrel
The main drive adopts frequency conversion control, which is reliable in performance and energy-saving
II Mold head section
Using computer UG optimization design and simulation. Comes with built-in processing programming By utilizing advanced five axis linkage machining, the precision and smoothness of the mold are ensured, with strong interchangeability. The entire mold has low material flow resistance, uniform distribution, and high production capacity under the same pressure. The entire flow channel is carefully ground, polished, and plated with hard chromium
Basic structural form: parallel feeding stacking structure
Mold material: Made entirely of 40CrMo alloy steel through forging and heat treatment to increase the hardness of the material and eliminate impurities
In addition to its internal stress, ensure that the structure and dimensions of the mold remain stable for a long time and do not deform during use
3. After being processed by a precision five axis machining center and treated with advanced polishing technology, the surface of the mold head is made to meet the mirror requirements, and then
Electrolytic hard chromium plating enhances wear resistance and corrosion resistance, resulting in a long service life
Mouth mold diameter: ￠ 500mm
5. Heating method: strip ceramic heating (high-temperature resistant socket type), uniform heating, fast speed
6. Mold heating section: Zone 6
7. Temperature control method: Solid state contactor, modular temperature control
8. The feed distributor channel is finely polished and fully chrome plated
III Membrane Bubble Internal Cooling (IBC) Control System
The IBC system (internal cooling system for membrane bubbles) uses an imported ultrasonic detector for real-time exchange of hot and cold gases through an intake and exhaust system. The detection signals are collected, converted, and processed by AD and DA modules, and then controlled by PLC operation to discharge the hot air and volatile substances inside the membrane bubbles, quickly cooling the melt and improving the transparency, brightness, and yield of the film. At the same time, the size of the "membrane bubbles" is precisely controlled; Ensure that the diameter of the membrane bubble remains unchanged.
Including:
A digital diameter measuring device composed of three ultrasonic sensors (Beijiafu P+F)
PLC programmable controller
Diameter control system (IBC), Chinese simulation screen, human-machine interface, control accuracy ≤± 3MM
Inlet: external cold air from outside to inside, outlet: internal hot air from inside to outside, low-noise inlet and outlet fan power: 11KW, two sets. 4. Automatic air ring+automatic thickness measurement system
Adopting a 360 degree center scanning and contact type online automatic thickness measurement system, it is suitable for measuring the thickness of thin films by upward blowing method, and is not affected by the color of the measured object. The thickness measurement probe adopts Italian technology and American IN acquisition card. Equipped with wireless IoT WINf. Cloud servers. Composition of electrical control components. The main control cabinet mainly includes industrial computer, controller, operation screen, and functional module
Production of liquid packaging material blown film machine equipment
Composed of blocks and printers, each component is connected through a network to achieve efficient real-time control functions. Graphic display film
Various thickness curves and thickness trends
1. Automatically adjust the air ring, using 6 air inlet ducts to reduce air interference and ensure continuous and stable control of film thickness
Uniformity.
2. The online thickness measurement system adopts a unidirectional 360 degree scanning online thickness gauge, combined with a fast analysis algorithm, which can measure thickness within 1 minute
Analyze 360 degree membrane bubbles using 48 heating blocks. Accurately controlling the temperature of the air causes changes in the distribution of cooling air volume in the circumferential direction of the mold head
Adjust the thickness and thinness of the membrane bubble to ensure a quality improvement of over 40% in thickness (uniformity).
3. The thickness gauge adopts an imported radioactive probe, which follows the 360 degree unidirectional scanning of the rotary table, with high measurement accuracy and stable and reliable operation.
4. Automatic wind ring control page, used to adjust control parameters. The lower part of the page displays a cross-sectional view of the heating distribution status
Display the measured thickness profile, allowing customers to easily complete the thickness measurement task.
5. Cooling fan: Select one 18.5KW high-pressure centrifugal fan and use a frequency converter for variable frequency control speed regulation. Note:
5、 Horizontal rotary traction
The horizontal rotary traction device has an internationally advanced level. The traction mechanism adopts a ± 360 ° horizontal swing rotation, which is driven by a motor and gears to drive the traction and various "guide rollers" to rotate at a certain speed, so that the film from each point of the mold head to the position of the winding shaft is evenly distributed and oscillated, achieving the goal of evenly staggering the thickness points of the film, making the film winding smooth, and avoiding the exposure of the film ribs. Variable frequency control of rotation speed and film line speed, with a constant and adjustable film line speed, low film tension, and a scientifically reasonable structure.
Production of liquid packaging material blown film machine equipment
Tower type frame combination, internal platform design, main tower column adopts tower type frame, and the upper traction platform is equipped with loading and unloading traction roller platform space.
The upper traction rotating mechanism adopts a ball bearing structure, and the rotating motor is controlled by frequency conversion with adjustable speed.
Rotating guide air roller: The air roller is controlled by a limit switch through pneumatic control. During manual film introduction, the air roller can rotate, changing from sliding friction to rolling friction, reducing film introduction resistance, saving time and effort. The surface of the air roller is treated with hard oxidation.
Traction frame height: about 10.5 meters, guardrail height of 1 meter (with kickboard at the bottom)
Air cushion fan: Two three-phase 750W fans are installed at both ends of the air roller to generate a layer of air cushion between the rotating guide air roller and the film, preventing direct contact between the film and the air roller and avoiding scratches on the film surface
Rotating guide flattening roller: using arc-shaped flattening roller, the film surface is flat without folding
Traction steel roller: width 2500mm, diameter ￠ 200mm, surface polished with hard chrome plating, dynamic balancing treatment.
Traction rubber roller: width 2500mm, diameter ￠ 200mm, made of EPDM rubber, dynamically balanced, without cracking.
Traction drive and deceleration: The upper traction adopts a 3.7KW servo motor, and the traction reducer adopts a turbine worm direct connected reducer
Maximum traction speed: 60 meters per minute
Production of liquid packaging material blown film machine equipment
Production of liquid packaging material blown film machine equipment
Production of liquid packaging material blown film machine equipment
VI Stable foam device
Adopting a circular squirrel cage structure
2. Adopting lightweight guide roller surface coated with anti sticking material, effectively overcoming film adhesion and reducing scratches on the film
Adopting electric adjustment method, the electric adjustment device controls the opening and closing of the stable foam rod
7、 Fully automatic center winding machine
Adopting fully automatic cutting and shaft changing grasping, with taper tension control. The program control completes functions such as automatic roll changing, automatic film cutting, and automatic roll unloading, reducing human resource costs and improving efficiency. Synchronized with traction control, maintaining constant tension, can adapt to the winding of various characteristic materials. Controlled by a servo controller, the transmission accuracy is high, the longitudinal error of the film is small, and the tension change is small.
1. Rolling method: Single station winding is adopted, with fully automatic surface friction.
2. The transmission cylinder is equipped with a magnetic induction probe and a magnetic induction switch to ensure smooth, reliable, and sensitive transmission
And the service life.
3. Adopt PLC technology to control the system and ensure the reliability of system control.
4. Tension control: three-stage tension, taper control, ensuring constant tension for film winding and unwinding, winding neatly without bulging
5. Roll up roller: ￠ 320mm * 2500mm, surface coated with wear-resistant nitrile rubber, engraved with diamond patterns
6. Lower traction steel roller: ￠ 150mm * 2500mm surface chrome plated
7. Lower traction rubber roller: ￠ 150mm * 2500mm surface coated with EPDM rubber.
Production of liquid packaging material blown film machine equipment
8. Traction: One 2.2KW servo motor with synchronous tension control. Two 2.2KW servo motors for AB winding.
9. Inflatable shaft: 4 heavy-duty key plates, national standard ￠ 74mm.
10. Maximum winding speed: 60 meters per minute
11. Cutting device: equipped with 5 pairs of double blade cutting devices to meet the needs of various specifications of products, achieving non-stop production for tool changing
12. Digital length calculation, ultra long alarm, rotating pneumatic cutting blade, cutting and roll changing PLC programming, manual and automatic integrated control.
13. Equipped with a robotic gripper shaft
15. Eight Ultrasonic correction device
1. Use ultrasonic probes to automatically guide non-contact testing; High control accuracy, not affected by color difference, stable and reliable
2. Adopting brushless drive motor, with strong anti-interference ability and stable operation
3. Adopting a widened correction frame with small displacement to ensure the neatness of the film roll
4. Automatic centering, easy to operate
Nine Vector weighing and feeding system
The vector weighing feeding system controls the longitudinal average thickness of the film (longitudinal closed-loop control), with automatic suction, metering, and weighing
Heavy, mixing and other functions, using PLC programming, touch screen control, real-time display of film width, thickness, production capacity, and each layer
Proportion of extruder.
Production of liquid packaging material blown film machine equipment
1. High precision raw material proportioning with an accuracy error of+-0.05%, extrusion yield accuracy, and thickness longitudinal error of 0.3%
2. Real time statistics on raw material consumption, effectively assisting production workshops in controlling raw materials
3. By monitoring the production status of the extruder in real-time, it is possible to compensate for changes in raw material density, heating temperature, and screw
Rod wear and changes in extrusion process leading to changes in the quality of extruded products
4. When changing the formula, only the product requirements need to be set, and the product specifications can be changed within one minute, greatly saving time
Save startup time and reduce waste
5. Real time statistics on raw material consumption, effectively assisting production workshops in controlling raw materials
6. Can control the meter weight and thickness of extruded products with high precision
This unit adopts integrated control, which is easy to operate and has a high degree of automation. It effectively adjusts the screw speed, IBC membrane bubble internal cooling system, film line speed, tension and other process parameters of the whole machine; Control the cooling system, foam stabilization device, rotary traction, winding machine and other components. Simultaneously display and monitor parameters such as current, tension, line speed, and roll length, with automatic alarm and self diagnosis functions.
The operation part adopts a suspended 15 inch touch screen, and the main control system adopts a touch screen+PLC centralized control.
1 set of temperature control combination cabinet, using high-quality frequency converter and solid-state contactor
All cables comply with national standards, and electrical components are clearly labeled
All contactors are made of Schneider brand
7. All lines are laid with cable trays.
2、 Supporting facilities: to be solved by users themselves
Power supply: three-phase 380V, 50Hz.
Power cord: The user's power cord with a diameter of ≥ 120mm2 (copper wire) is connected to the machine distribution box.
The whole machine is grounded, with a grounding resistance of ≤ 4 Ω and cannot be in line with the grounding of the lightning protection system
Gas source: 12m ³/h, pressure ≥ 6kg/cm2.
Water source: tap water or water pump supply at 25 ℃, pressure of 0.2Mpa, 3 m ³/h water recycling
III Other auxiliary equipment
1 set of edge material recycler - user provided
1 set of corona treatment machine (Nantong Sanxin) - user provided
14、 Delivery time -90 days.
