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Production Process

BLOWN FILM EXTRUSION

Plastic pellets are fed into an extruder though a hopper. Heat and friction from the extruder convert the pellets into a continuous uniform melt and force this melt through a die to form into a continuous profile. Air from inside and outside blows onto this profile to cool it and makes it to be blown up like a bubble. The bubble then moves vertically upwards, until it is flattened into a lay-flat tube by nip rollers. This lay-flat tube is then taken back down the extrusion tower via more rollers, and finally, it will be taken up by a winder.

Various blown film machines in our plant can meet your different demands of sizes. Our blown film lines are capable of lay-flat tube width from 60mm to 3000mm.

PRINTING

Rotogravure printing is a manufacturing,in which the film is printed by a gravure cylinder that has been engraved the printing design. At the start of this process, a blade on the printing machine removes the excess ink from the non-recessed areas of the cylinder surface.

Then the film passes between the gravure cylinder and impression roller where force is applied on the film in order to transfer the printing design from the gravure cylinder onto the film. Finally, the film goes through a dryer because it must be completely dry before going through the next color unit and accepting another coat of ink.

Printing lines in our CMP Plant are capable from one-color printing to seven-color printing.

BAG MAKING

Heat sealing is a process of sealing one thermoplastic material to another thermoplastic material with heat and pressure.
The tube film will be closed by heat sealing process and then cut into individual bags in this process.

Our bag making lines are capable of producing big-size flat bags,square bottom bags or other shapes of bags with maximum width of 2,000mm.

MITO PLANT

LDPE/LLDPE BLOWN FILM LINE
Size lay-flat width: max.3000mm
Capacity 600 tons per month
Manufacturing Environment

Mito Plant No.1:positive pressure air cleaning system,door interlocking system

Mito Plant No.2:positive pressure air cleaning system,door interlocking system

HITACHINAKA CMP PLANT-BLOWN FILM EXTRUSION

LDPE/LLDPE BLOWN FILM LINE
Size lay-flat width: max.1500mm
Capacity 300 tons per month
Manufacturing Environment

Blown Film CMP Plant 1: positive pressure air cleaning system, door interlocking system,NASA class 50000

Blown Film CMP Plant 2: positive pressure air cleaning system, door interlocking system,NASA class 50000

HITACHINAKA CMP PLANT-PRINTING LINE

Printing Method rotogravure printing
Printing Machine 7-color printing machine×1,3-color printing machine×1
Printing Size

width: max.700mm / printing pitch length: max.900mm

Capacity 80,000,000m per year
Manufacturing Environment positive pressure air cleaning system,door interlocking system,NASA Class 50000

HITACHINAKA CMP PLANT-BAG MAKING LINE

A LINE
Product flat bag / side gusset bag / big size pallet cover
Bag Making Size width: max.750mm
Manufacturing Environment positive pressure air cleaning system/door interlocking system/NASA class 10000
B/C LINE
Bag Making Size

width:max.2000m flat bag/side gusset bag/big size pallet cover/ECOTEX

Manufacturing Environment door interlocking system, NASA Class 50000