High Quality Single-Sided PLA Coated Paper Cup Rolls Factory Supply PE for Beverage/Tea Offset Printing Compatible

Extrusion Molding

● PLA Lamination: The molten PLA is pushed into the mold, such as a T - Die head, by the screw of the extruder to form the preliminary shape of the film.

● PE Lamination: The molten polyethylene is pushed into the extruder head by the screw, and then extruded to form the initial shape of the film.

Cooling and Shaping

● PLA Lamination: The extruded PLA film is rapidly cooled to around 30°C - 40°C by cooling rolls or air cooling to harden and shape it.

● PE Lamination: Usually, cooling water or air is used to cool the extruded film, making it harden quickly and maintain its shape.

Traction and Rewinding

● PLA Lamination: Traction rolls are used to stretch and pull the film, making it flat and reaching the required thickness. Then, the formed film is wound around the take - up reel.

● PE Lamination: The cooled film is stretched and pulled flat by traction rolls, and the thickness is controlled. Finally, it is rewound into a continuous roll.

Overall, the production processes of PLA lamination and PE lamination are different in raw material preparation, heating, and melting stages, but are relatively similar in steps such as extrusion molding, cooling, shaping, traction, and rewinding. However, due to the different material properties of PLA and PE, the specific process parameters and equipment selection in the production process will vary.

Eco - friendliness. PLA, a biodegradable material, significantly reduces environmental impact by decomposing naturally, unlike non - biodegradable PE. 

● Catering industry: Disposable paper cups (for cold and hot drinks), noodle bowls, soup buckets.

● Takeout packaging: oil-splashed noodle boxes, fried chicken boxes, French fries cups, salad bowls.

● Food retail: baking packaging, fresh food trays, outer packaging for frozen foods.