PLA (polylactic acid) is a renewable biodegradable material made from starch derived from renewable plant resources such as corn and cassava. PLA is an ideal green polymer material because its production process is pollution-free and the product can be biodegradable and recycled in nature. Thermal stability of PLA is good, the processing temperature is between 170 ~ 230 ℃, it has good solvent resistance. Products made of PLA have the advantages of biodegradable, biocompatibility, gloss, transparency, good feel and heat resistance, but also have certain bacteria resistance, flflame retardant and ultraviolet resistance, so it is quite widely used for the packaging of fruits, vegetables, eggs and hard packaging of baked goods, also for the packaging of sandwiches, cookies and flowers.
PET extrusion, or called PET sheet extruder,PET extrusion machine is quite popular in global market. Especially for PET easy recycled nature in food packaging or other packaging field, PET is quite an ideal thermoforming packaging material nowadays. The most common seen PET sheet extruder machine models are: 800mm PET sheet extrusion line, 75 twin screw extruder,output capcity: 300-350 kg/h, and 800mm PET sheet production line,85 twin screw extruder, output capacity:500-600kg/h.Depending on different formulation, mateiral or viscosity, JWELL also offers PET sheet line with output capacity of up to 800kg/h, 1000kg/h and 3000kg/h. Some clients tend to add 70-90% recycled material for PET sheet production. JWELL also offers single screw PET extrusion line and PET flakes recycling pelletizing machine as a total solution to meet global environmental trend.
JWELL parallel twin screw extrusion line for PET extrusion, is a vacuum degas drying-free and energy-saving line, with the characteristics of low energy consumption, simple process and convenient use and maintenance. According to the customer's production capacity requirements, there are various specifications and models of co-rotating parallel twin extruders with screw diameters of 75/85/95/110/135mm. The segmented screw combination structure can effectively reduce the viscosity loss of PET resin, the symmetrical and thin-wall calender roller increases the cooling effect and improve the capactity and sheet quality. Multi components dosing feeder can control the percentage of virgin material, recycling material and master batch precisely, the PET sheet or PLA sheet produced is widely used for thermoforming packaging industry or other fields.
Single screw PET Extruder Line Parameters
Machine List
1. Material type and its conditions: Virgin or recyled PET, flakes or pellets
2. The final PET sheet width in mm
2. The thickness of PET sheet in MM
3. The output capacity required
4. The final application of the sheet
5. The sheet structure, one layer sheet or multi-layers sheet (A/B, A/B/A, B)