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Main feature and purpose:
This machine is used for producing soft plastic package bag, it can blow and print at the same time with printing on both side. The material is HDPE, LDPE, dissoluble plastic, biodegradable material and recycling material. It will be best choice for your to produce the shopping bag, vest bag and other plastic bags. We will provide you the whole line for the bag making, including the various BAG MAKING MACHINE.
1. Wide Pervasive application, several purposes ( It can blow and print at the same time, or single blowing and single printing);
2.Advanced structure, easy and simple to handle, correct overprint, simple maintenance;
3.Economize raw materials , the quality of product is steady. In comparison with the traditional process, it has the advantages as follows .
a.gorgeous color. good fastness;
b.Blowing and printing at the same time. Correct overprint;
c.simple maintenance, stable and reliable quality
d. Less power consumption, less labor, work time saving, less cost
Molds of Film Blowing and Printing Machine
Mold
HSY-350
HSY-800
HSY-1000
HSY-1200
Material
HDPE, LDPE, LLDPE, Recycling material, Biodegradable material.
Max Width
350mm
750mm
950mm
1150mm
Screw
φ45mm
φ50mm
φ65mm
65mm
L:D
28:1
28:1
30:1
30:1
Out put
40kg/h
55kg/h
75kg/h
90kg/h
Thickness
LDPE: 0.001-0.2mm HDPE: 0.012-0.15mm
Color
Two colors, more colors can be designed
Print Speed
40m/min
40m/min
50m/min
55m/min
Extruder
15kw
18kw
30kw
55kw
Total Power
26kw
55kw
65kw
85kw
Step of the Film Blowing:
Feeding→plastifying→extruding→blowing out and extensing
→cooling and finalizing the design→traction→ corona treatment
→ printing → Drying → traction →rewinding
Feeding Process
Just the equipment start, put litter material , Until the material is extruded, ensure the machine head is normal and the condition of plastifying is good, then add large quantities of material.
Plastifying process
The raw material goes out from the extruder and it is heated through preheat section, plastifying section and extruding out measurement section, mixed by screw pole, the grain material is plastified into fused mass.
The Extruding out process
The fused material output from the screw pole extruding out section makes the original swirl material becoming the advection through the filter screen in machine head. Then, the material comes into the spiral machine head and flows into the die opening, finally, it becomes the cylinder filming tube, extruded out.
After the filming tube is drafted out, the size of film should be controlled well. The main processes are the blowing out and the lengthways drafting.
Under the certain extruding machine rotating, the instant temperature and the changeless material discharging, the size (width of breadth ) is decided by the ratio of blowing out, which (the times of film’s transversed drafting ) is easily operated under 3 ~ 6 times.
The lengthways drafting time decide the thickness of film , i.e. usually,the ratio is 3~7 times between drafting speed and the extruding speed. The film is easily broken out on the condition of the too large drafting ration.
Cooling and finalizing the design
Cooling vane(air ring) and air pressure decide the final main design . Its function is to make the film tube extrude out from die opening and the plastics cooled according to the designed shape and it is adjusted in fine. Section shape and brightness surface are more precise. After the shaped, the material passes the drafting roll and comes into printing part.
Printing part
The technical flowing is as follows,
traction roller→corona machine→first overprint→dry→second overprint →the same speed roller traction rewind.
The electric compact machine to treat the film
In this machine, the electronic friction machine adopts the high frequency pulse high voltage, make the air bring ionization and the discharge phenomena. When the plastic film passes through the electric discharge space and bears the pulse arc stroke, the original smooth surface of film forms the pores which can be seen by the naked eye, as a result, the printing fastness is improved.
Printing speed adjustment
The motor is electrically moment motor, which uses 200~1200 rotates/min. The worm wheel and worm make the printing plate and roller rotating at the same speed (when worm wheel and worm is slow down the rate largely it can lock itself). Through the mechnism driving, the printing speed is optional ,and can be adjusted between 8~40 meter/min.
Drying part
The oven drying is used between the front chromatography and the back chromatography to reach the ink drying quality. The time of ink drying effects directly the quality of products.
The lengthways and transverse adjustments of printing.
Because the plate shaft of machine is driven by guild adding straight gear, the transverse adjustment range of plate (Left and Right) is 50mm (adjusted by wheel),handwheel adjust the lengthways (front and back) to raise or fall down, the chromatography adjustment can be finished and can be changed.
Rewinding part
This machine adopts double friction rewinders and cutting device. According to customers’ requirements, It could produce the single layer film and double layers rounded film. It could double rewind in single layer or single rewind in two layers. Finally,The film should be rewinded smoothly.
♦ Our factory has established more than 30 years, and always make the market requirements as our guider, the scarification of the clients as our rule, the self-innovation as our develop method, the improvement of our competitive power as our target.
♦ Warmly welcome new and old customers from home and abroad to visit our factory, and establish friendly and cooperative business relationship.