A bubble tea cup and PET thermoforming packaging manufacturer in Thailand has commissioned a high-specification ABA PET Three-Layer Sheet Co-Extrusion Line from TZ Machinery. The line pairs an 85 mm parallel twin-screw extruder with a 75 mm single-screw extruder, and was selected to raise output of high-clarity PET sheet for beverage cups and food packaging.
Antecedentes del proyecto
Our relationship with this valued Thai client began at the Thailand Plastics & Rubber Exhibition last year. As a well-established manufacturer of bubble tea cups and PET thermoforming packaging, they initially approached us to repair the screw of their existing sheet extruder.
Impressed by our technical expertise, quality of service, and the proven efficiency of our multi-layer PET co-extrusion technology, the customer chose to partner with us again this year to expand their production capacity. They ordered a high-specification Línea de coextrusión de láminas de tres capas ABA PET featuring an 85 parallel twin-screw plus 75 single-screw configuration.
[Image: ABA PET three-layer sheet co-extrusion line with 85 parallel twin-screw and 75 single-screw – TZ Machinery]
High-End Configuration & Key Features
To meet the client’s demanding standard for high-clarity, stable PET sheet production for beverage and packaging applications, the line was built with industry-leading components.
| System | Especificación |
|---|---|
| Line type | ABA three-layer co-extrusion |
| Screw configuration | 85 mm parallel twin-screw + 75 mm single-screw |
| Drive & control | Siemens main motors, Siemens servo motors, integrated Siemens PLC |
| Melt flow components | JC Times flow channels, melt metering pump, screen changer, feedblock, extrusion die |
| Bobinado | Heavy-duty gantry-type dual-station winder |
| Target product | High-clarity PET sheet for bubble tea cups and thermoforming packaging |
Drive & Control System
The line is equipped with Siemens main motors, Siemens servo motors, and a fully integrated Siemens PLC control system. This combination ensures superior energy efficiency, precise torque management, and reliable automation across the whole line.
Extrusion Tooling & Melt Flow Systems
To guarantee immaculate melt homogeneity, continuous operation, and precise layer thickness control, we integrated premium components from JC Times, including the flow channels, melt metering pump, screen changer, feedblock, and extrusion die. The Máquina de extrusión de láminas de PET con doble husillo paralelo section handles the core layer, while the vented single screw PET sheet extrusion line section delivers a stable outer layer.
Winding System
The line incorporates a heavy-duty gantry-type dual-station winder, allowing operators to handle large-diameter rolls effortlessly while maintaining uniform winding tension.
[Image: Heavy-duty gantry-type dual-station winder on the ABA PET co-extrusion line – TZ Machinery]
Results & Impact
By upgrading to our ABA PET sheet extrusion technology, the customer substantially reduced raw material costs by using recycled or core-layer materials in the B layer, while maintaining high visual and functional standards on the outer A layers.
The reliable Siemens automation and JC Times extrusion hardware ensure minimal downtime, high output, and consistent sheet quality required for high-speed thermoforming. Edge trim is returned to the line through a soundproof sheet edge scrap online crusher, which keeps the regrind stream clean and further supports the cost target.
This successful project reinforces our commitment to delivering tailored, high-end extrusion solutions to global packaging manufacturers.
PREGUNTAS FRECUENTES
¿Qué es una línea de coextrusión de láminas de PET de tres capas ABA?
Se trata de una línea en la que se extruyen simultáneamente dos capas exteriores A y una capa central B. Las capas A utilizan PET virgen o de alta calidad para garantizar la calidad de la superficie y la idoneidad para el contacto con alimentos, mientras que la capa B contiene escamas recicladas o material triturado, lo que reduce el coste de la materia prima sin alterar el aspecto exterior.
¿Por qué combinar una extrusora de doble husillo de 85 con una extrusora de husillo único de 75?
El tornillo doble paralelo de 85 mm proporciona una mezcla eficaz, una desvolatilización óptima y un alto rendimiento para la capa central, sometida a una gran carga, mientras que el tornillo simple de 75 mm ofrece una masa fundida estable y homogénea para la capa exterior. Juntos logran un equilibrio entre el rendimiento, la calidad de la masa fundida y el consumo energético.
¿Qué aporta el sistema de control de Siemens a esta línea?
Los motores principales de Siemens, los servoconvertidores y un PLC integrado permiten una gestión precisa del par y la velocidad en las extrusoras, la bomba de fusión, el cambiador de tamices y la bobinadora. Los operarios obtienen proporciones de capas repetibles, una puesta en marcha más rápida y menos paradas no programadas.
¿Cuánto se puede ahorrar en costes de materia prima gracias a la estructura ABA?
El ahorro depende de la proporción de las capas y de la diferencia de precio entre el PET virgen y el reciclado. Dado que la capa B suele constituir la mayor parte del espesor de la lámina, su sustitución por escamas recicladas o material triturado de producción propia es lo que genera la mayor parte de la reducción del coste del material.
¿Por qué se utiliza una bomba dosificadora de material fundido en una línea de producción de láminas de PET?
The melt pump stabilises pressure and output at the die inlet, so sheet thickness and layer distribution stay constant even when extruder conditions drift. That stability is what makes thin, high-clarity PET sheet repeatable at production speed.
Can the line run recycled PET in the core layer?
Yes. The ABA structure is designed for it: recycled flakes or edge-trim regrind go into the B layer, while the A layers keep the surface clear and food-contact compliant. Vacuum degassing and melt filtration control volatiles and contamination.