PE BREATHABLE FILM PRODUCTION LINE
PE BREATHABLE FILM PRODUCTION LINE
PE BREATHABLE FILM PRODUCTION LINE
The PE Breathable Film Production Line use PE air-permeable plastic granules as raw material, and uses an extrusion casting method to melt-extrude the PE-modified air-permeable plastic granules containing inorganic filler through a flat die, and the roller is stretched at a high rate to produce a sub-nanometer micro Porous membrane.
Since the fight against the pneumonia epidemic caused by the novel coronavirus, as companies gradually resume work, the shortage of medical protective products has eased, but there is still a gap. In particular, as a “teater” protective suit for medical staff, it is generally replaced every 4 hours, which is in great demand. provides PE Breathable Film Production Line for manufacturers
Disposable medical protective clothing materials need to meet the requirements of “three resistance and one resistance” (that is, water repellent, blood repellent, alcohol repellent, and antistatic) requirements of micro-nano grade materials. This composite material can be combined with different materials, such as polyethylene/polypropylene spun-bonded nonwoven fabric, combined with breathable microporous film or other nonwoven fabric, or spun lace nonwoven fabric combined with breathable microporous film, or Wooden paddle composite spun lace nonwoven fabric. In addition, some membranes made of PTFE can be used for high-end protective clothing fabrics. In the composite of these materials, the breathable microporous film is particularly important.
The so-called breathable film is a kind of functional inorganic product that is uniformly mixed into the polyolefin raw material, so that the product has pores due to high stretching during the film formation process, so as to have the function of breathability and moisture transmission; the function of the breathable film In short: Waterproof and breathable (moisture), take the most commonly used PE as a carrier as an example.
The principle of breathability
The principle is very simple: inorganic matter + stretching = micropores. In fact, the operation is very particular. Only micropores with proper size and uniform distribution are effective
insufficient stretching and too small pore size, insufficient stretching and no pore size, poor stretching, and insufficiently sized micropores can only be waste products.
Basic film-forming principle of breathable film
The film-forming principle of the breathable film: PE+CaCO3 (masterbatch) — film formation — stretching — breathable film
PE breathable film is blended with LDPE/LLDPE polyethylene resin carrier by adding about 50% of special calcium carbonate, and then oriented and stretched to a certain ratio after being extruded into a film. Since polyethylene resin is a thermoplastic plastic material, it can be stretched and crystallized under certain conditions. During stretching, the interface between the polymer and the calcium carbonate particles will be peeled off, and the interconnected serpentine pores are formed around the calcium carbonate particles. Or channels, it is these pores and channels that give the film a breathable (wet) function, thereby communicating the environment on both sides of the film.
The mechanism of action of a breathable membrane
When the water vapor concentration on one side of the film is greater than the environment on the other side of the film, a humidity gradient pressure difference is formed. This provides the basic conditions for gas (vapor) convection. Due to the formation of convection, the humidity environment on both sides of the film tends to be relatively balanced.
The breathable membrane is used as a water-proof membrane, which has a barrier effect on liquids. Because of the many passages in the membrane, the tortuous channel formed by it has a large “L/D” value, which can be understood as a capillary. Therefore, under the same liquid (such as water) and the same pressure, as long as the height of the liquid column of the capillary is less than the length of the capillary, it can be ensured that the liquid will not leak out.
The production line use PE air-permeable plastic granules as raw material, and uses an extrusion casting method to melt-extrude the PE-modified air-permeable plastic granules containing inorganic filler through a flat die, and the roller is stretched at a high rate to produce a sub-nanometer micro Porous membrane.
PE Breathable Film Production Line
Model: 130-1800
General：
1.Utility source：
Electric Power Supply: All Cabinets(including main power supply and control) and all internal cables will be supplied by the seller, buyer’s responsibility is for external cables and cable frame to main panel/input power position of sheet extrusion machine)
Mains input 3×380V (Volt)
Fluctuation max ≦+/-15%
Frequency 50HZ
Fluctuation max +/-1.5HZ
Cooling water supply: water used on machinery in closed or open-loop circuits must follow the general requirement: clean filtered and free of sediments.
Supply temperature 30℃
Supply pressure 0.2～0.3Mpa
Pressure variation +/-0.5bar
Return pressure average 1.5bar
consumption capacity 20-30m3/h
Compressed air supply: clean, free of oil, dust, and water
supply pressure at the point of use 0.5～0.7Mpa
Pressure variation +/-1%
Consumption capacity 0.9 m3/h
2.Technica Data:
Extruder (S130/36) PE+CaCo3 pellet
Design output 500-600 Kg/h
Finished product width 1800 mm
Product thickness 0.015-0.05 mm
Deviation ±5%%
Design maximum linear speed 200 m/min
Production speed 120-150 m/min
Total installed power 700 KW
Total length of production line 24 meter
Maximum production line width 8 meter
The total maximum height of the production line 5 meter
3.Equipment list
Feeder system 1set
130/36Extruder 1set
Screen changer 1set
Gear pump 1set
T-die 1set
Castingroller calender 1set
cooling forming system1set
Thickness gauge system1set
Horizontal stretching machine 1set
Corona treatment system 1set
Haul-off unit 1set
Defect detection system 1set
Take/off and Film trimming system 1set
Disc type double station winder 1set
Trimming waste recycling system 1set
Electrical control system 1set
Spare parts 1set
Details
1.Feeder system
Vacuum negative pressure suction machine Max capacity 500-600kg/h
Suction motor power 5.5kw
The suction pipe adopts stainless steel fixed pipeline, and the feeding site is tidy
2.Extruder
Specification model 130/36 TQM
Design capacity Max: 500-600kg/h
Screw and barrel type screw and barrel, manufactured by the introduction of German technology, made
Screw diameter Φ130mm
Screw length to diameter ratio 36:1
Main motor power AC 200KW
Main motor brand Siemens Beide or Brazil WEG AC motor
Gearbox adopts integral box body, hard tooth surface, high torque, vertical structure
Gearbox brand domestic high-quality gearbox General Factory
Gearbox cooling External heat exchanger is provided with water to cool the gear oil, and the hard pipe is connected to the waterway
Cooling of the feed section of the barrel, overflow water jacket cooling, external water cooling for cooling, hard pipe connection to the waterway
Barrel heating power and temperature control 7 zones X 8KW, ceramic heating;
Barrel cooling power and temperature control 7 zones X 0.55KW forced air cooling
Extruder base The operating steel platform is welded by square tube steel, which is stable and firm. Equipped with safety guardrail and escalator;
3.Screen changer
Specification model 150 single-board single station
Screen changing form: hydraulic automatic screen changing
Hydraulic station 3K hydraulic station with accumulator and hydraulic oil tank
Pressure monitoring feedback 1 set of domestic-made Xinda brand pressure sensor in front of the network
4.Gear pump
Specification model 250CC
Metering pump origin brand Domestic high-quality brand
Transmission system brand American Rexnord reduction transmission system, FALK brand
Transmission motor power 18.5KW
Melt metering pump constant temperature Matching a 9KW mold temperature machine to accurately control the overall temperature of the melt pump
Pressure monitoring feedback The front of the pump is equipped with a set of imported Geffron brand pressure sensors; the rear of the pump is equipped with a domestic-made Xinda brand pressure sensor.
5.T-die
Pressure 2400mm T-die
Material 2738 alloy steel
Design Cloth hunger type
Runner Mirror plated hard chrome polished
Mold mounting frame With a quick disassembly device, easy to clean the mold
6.Casting cooling forming system
Matting roller 1pcs
The main drive of the casting machine 11KW variable frequency geared motor
Matte casting roll 1 Φ740mmX2800mm spiral runner roller, advanced internal runner design scheme makes the roller two
End temperature error is extremely small; the surface of the roller is electroplated with hard chromium and then matted; the roller is dynamically balanced with high precision
Calibration; one rotary joint on the left and right is matched;
Liquid silicone roller 1 Φ600mmX2800mm spiral flow channel liquid silicone roller, advanced internal flow channel design scheme makes
The temperature error at both ends of the roller is extremely small; the surface of the roller is coated with liquid silica gel; the roller undergoes high-precision movement
Balance check; one rotary joint on the left and right is matched;
Cooling pressure roller 2 Φ200mmX2800mm spiral runner rollers, advanced internal runner design scheme makes the rollers two
The end temperature error is extremely small; the surface of the roller is electroplated with hard chromium and polished; the roller is flattened with high precision
Scale calibration; supporting one rotary joint on the left and right;
Cooling roller opening and closing Air cylinder opening and closing
Silicone roller pressing system Double hydraulic cylinder opening and closing
Hydraulic station 3K hydraulic station with accumulator and hydraulic oil tank
Guide roller 1 Φ120X2800mm aluminum guide roller, the surface of the roller is polished and hardened; the roller is high-precision
Degree of dynamic balance check;
Centralized water supply and drainage Two sets of stainless steel transition water tanks, centralized water supply and centralized discharge of cooling water for casting machine, and drag chain movement;
Adjusting the center height of the casting machine, integral linkage lifting, geared motor drive, and manual dual-use
Casting machine translation device 1.1KW geared motor drive and manual dual-purpose overall translation, moving range 3.8 meters
7.After cooling setting system
Cooling setting machine drive 7.5KW variable frequency geared motor
Rear cooling roller 2 Φ350X2800mm spiral runner rollers, advanced internal runner design scheme makes both ends of the roller
The temperature error is extremely small; the surface of the roller is electroplated with hard chromium and then polished and polished; the roller is leveled with high precision
Scale calibration; supporting one rotary joint on the left and right;
Guide roller 1 Φ120X2800mm aluminum guide roller, the surface of the roller is polished and hardened; the roller is high-precision
Degree of dynamic balance check;
8.X-ray probe thickness gauge
Brand origin: domestic high-quality brand
Detection width 0-2700mm
Detection range 0.01-0.1mm
Scanning speed 10-100mm/s
Repeat detection accuracy 1um
Scanning accuracy ±1um
Scanning positioning accuracy 0.5mm
Synchronization accuracy 1mm
Working power 2.5KW
Control operating system 21-inch LED color display, keyboard, and mouse man-machine interface control system; also equipped with a front secondary display, square
Adjust the mold opening operation
Guide roller 2 Φ120X2800mm aluminum guide roller, the surface of the roller is polished and hardened; the roller is high-precision
Dynamic balance check
9.Horizontal stretching machine
9.1 Preheating system
3 sets of precise oil temperature control preheating roller system;
3 sets of 5.5KW variable frequency motor deceleration system drive;
supporting independent precise temperature control mold temperature machine.
Preheating roller 3 Φ450X2800mm spiral runner rollers, advanced internal runner design scheme makes the temperature error at both ends of the roller extremely small;
the surface of the roller is electroplated with hard chromium and then polished and polished;
the roller undergoes high-precision dynamic balance verification;
Supporting a rotary joint on the left and right;
3 compression rubber rollers Φ240X2800mm compression rubber roller, the surface of the roller is covered with EPDM wear-resistant rubber;
the roller has undergone high-precision dynamic balance verification;
dual-cylinder pneumatic opening and closing Squeeze;
9.2 Stretching system
4 sets of precise oil temperature-controlled stretch roller system;
4 sets of 7.5KW variable frequency motor deceleration system drive;
supporting precise temperature control mold temperature machine;
Stretching rollers 4 Φ270X2800mm spiral runner rollers, advanced internal runner design scheme makes both ends of the roller, The temperature error is extremely small;
the surface of the roller is electroplated with hard chromium and then polished and polished;
the roller has undergone high-precision dynamic balance verification;
it is equipped with a rotary joint on each side;
Compression rubber roller 4 Φ240X2800mm compression rubber roller, the surface of the roller is covered with EPDM wear-resistant rubber treatment;
the roller has undergone high-precision dynamic balance verification;
dual-cylinder pneumatic opening and closing compression;
4 back pressure rollers Φ200X2800mm steel back pressure roller, the surface of the roller is electroplated with hard chromium and then polished and polished;
the roller undergoes high-precision dynamic balance verification;
double cylinder pneumatic opening and closing compression;
9.3 Heat setting system
3 sets of heat setting roller system with precise oil temperature control, 3 sets of 5.5KW variable frequency motor deceleration system drive;
Supporting independent and precise temperature control mold temperature machine
Heat setting rollers 3 Φ450X2800mm spiral runner rollers, advanced internal runner design scheme makes the temperature error at both ends of the roller extremely small;
the surface of the roller is electroplated with hard chromium and then polished and polished;
the roller undergoes high-precision dynamic balance verification;
One rotary joint on the left and right;
Compression rubber rollers 3 Φ240X2800mm compression rubber surface rollers, the surface of the rollers are covered with EPDM wear-resistant rubber treatment;
the rollers have undergone high-precision dynamic balance verification;
dual-cylinder pneumatic opening and closing compression;
9.4 Cooling shaping system
4 sets of precise oil temperature control cooling shaping roller system, 4 sets of 5.5KW frequency conversion motor deceleration system drive;
The valve can control the flow rate so that the roller can quickly cool the product and have a good effect;
Cooling roller 4 Φ450X2800mm spiral runner rollers, advanced internal runner design scheme makes the temperature error at both ends of the roller extremely small;
the surface of the roller is electroplated with hard chromium and then polished and polished;
the roller undergoes high-precision dynamic balance verification;
One rotary joint on the left and right;
Compression rubber rollers 4 Φ240X2800mm compression rubber surface rollers, the surface of the rollers are covered with EPDM wear-resistant rubber treatment;
the rollers have undergone high-precision dynamic balance verification;
dual-cylinder pneumatic opening and closing compression;
Extension guide rollers 2 Φ120X2800mm aluminum guide rollers, the surface of the roller is polished and hardened;
with an extended exhaust groove;
the roller has undergone high-precision dynamic balance verification;
Guide roller 1 Φ120X2800mm aluminum guide roller, the surface of the roller is polished and hardened;
the roller undergoes high-precision dynamic balance verification;
Features of the horizontal stretching unit The frame adopts thickened high-strength steel plates as the wall panels on both sides, and the overall design is stable and firm with little vibration;
it is equipped with an escalator and a bridge operation inspection platform with safety guardrails;
it is equipped with a chain automatic film-piercing device for operation Convenient;
the transmission between the rollers adopts a tooth surface quenched helical gear transmission system, which has high transmission efficiency and low noise;
the unit is equipped with 8 24KW oil temperature controllers to ensure the accurate and controllable temperature of the rollers of the unit system.
10.Corona treatment system
Brand Place of Origin Domestic High-Quality Guangxin Brand
Effective corona width range 0-2500mm, double-sided corona, single-sided and double-sided switchable;
Working power 12KW (6X2) corona treatment machine;
Corona electrode 2 sets of aluminum alloy electrode, double cylinder pneumatic opening and closing;
Corona roller 2 Φ126X2700mm silicone corona roller;
