Recycling of Polyamide 6 Nylon Films
Nylon film is a very tough film with good transparency, good gloss, high tensile strength, and good heat resistance, cold resistance, oil resistance, and organic solvent resistance. Due to excellent abrasion resistance, puncture resistance, relatively softness, and excellent oxygen barrier properties, these PA6 films are widely used in packaging hard items, such as greasy Sexual foods, meat products, fried foods, vacuum packaged foods, steamed foods, etc. However, in the process of producing nylon membranes, a lot of scraps will be produced. This type of waste has a very high recycling value, so there is a certain amount of demand for related recycling equipment.
Based on its rich experience and expertise in plastic recycling, Aceretech Machinery developed the ACS-H series Compact Recycling Granulator according to the characteristics of this material. This type of recycling machine has advanced cutting, compaction, and drying combined with a gentle plasticization process design, which can effectively maintain the performance of the material and improve the quality of the recycled particles.
Process flow:
Equipment details
PA film pretreatment equipment
Due to the high mechanical strength of the PA film, it is necessary to pre-shrink its size with a shredder before granulation. The size is generally 60-80mm.
The shredded film is transported to the compactor through a belt
After the shredded film enters the compactor, the motor drives the movable knife at the bottom of the compacting chamber to rotate. The rotating movable knife and the fixed knife installed on the wall of the compaction chamber form a cutting force and generate frictional heat. The frictional heat causes the film to shrink. The deflector on the wall of the compaction chamber compacts the material downward, and the centrifugal force generated by the rotation of the cutter head sends the shrink film into the extruder screw;
The top of the compaction silo is equipped with an exhaust hole, which is connected with the dust removal exhaust device
The film in the compaction chamber is being cut and compacted
The generated moisture and dust will be collected and stored by this device
A Sliding gate with aservo motor is installed between the compaction bin and the extruder barrel to control the feed volume of the film.
In order to facilitate the operation and protect the compaction motor, we will be equipped with a frequency converter to control the speed of the compaction
Aceretech specially designed Single Screw Extruder
The screw length to diameter ratio L/D is generally 36~32
The long screw provides more space for process design, enabling it to have functions such as melting, mixing, exhaust, and internal pressure.
The screw material adopts bimetal processing technology to ensure the wear resistance, corrosion resistance and service life of the screw
After the film is processed in the screw process section, it will be transported to the filtration system
The high-torque gearbox adopts German integration technology and liquid nitrogen assembly technology, so that the equipment has the characteristics of high and low noise and long service life.
The heating system of the host uses ceramic heating coils for heating, and the electric control adopts imported solid state relays for control, and the use of fans for cooling
The vacuum system adopts a double vacuum design, which can effectively separate small molecule volatiles and water in the melt. The specially designed vacuum tank will collect and filter the extracted small molecule volatiles and water to ensure the cleanliness of the recycling workshop and the emission of VOCs.
According to the output and the cleanliness of the material, the filter system is equipped with a plate filter or a plunger type large-area filter
The plate filter is widely used in plastic recycling applications because of its short flow path and convenient filter replacement.
Automatic stretch and pelletizing system, with high automation, labor saving, small footprint, avoiding material waste, etc.
The final materials will be sent to the finished product silo through the air conveying system for collection.
Electrical control system
The control system adopts Siemens PLC control and is equipped with industrial-grade touch operation screen;
Smart start: One-key power-on\One-key power-off\One-key emergency stop;
All electronic components use LS, Schneider, Omron or ABB brands.