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Home > News > Recycling

Brazilian recycler expands production with KREYENBORG's infrared dryer

Source：Adsale Plastics Network Date ：2022-09-05 Editor ：JK

Recycled food-grade PET is booming in Brazil. According to a recently published official study, the nominal capacity for PET recycling in the country is around 400,000 t/year.

 

From which, about 140,000 t/year are from the only recovered thermoplastic that is approved in the country for direct contact with food and beverages (except mineral water), according to Irineu Bueno Barbosa, Jr., Partner and Commercial Director of recycler Global PET.

 

With its production having increased 60% since 2017, Global PET shows how hungry the market is for recycled food-grade PET.

 

An important reason for this growth within the last five years for Global PET has been the introduction of infrared technology, such as the IRD from Kreyenborg, into their existing lines. With Kreyenborg’s system, PET flakes are heated, dried, and crystallized before extrusion.

 

"We intensively compared conventional heating and drying technologies with that of infrared light some years ago. At the end of that study, the advantages of the IRD were clear, when compared to systems that work without pre-drying before extrusion," said Barbosa, Jr.


1.jpg

Brazilian recycler Global PET expands production with infrared dryer from KREYENBORG.


When Global PET first purchased Kreyenborg's IRD, it produced 1,500 t/month. "A year later, in 2018, we started up the second IRD and expanded production to 2,500 t/month. With the delivery of the third rotary drum in the second half of the year, we will move to 3,500 t/month of food-grade recycled PET," Barbosa, Jr. said.

 

With the 4th IRD purchased this year, Global PET forecast an increase in the production capacity to 4,500 t/month. Global PET does not cite a return on investment, but he says that the gains made with Kreyenborg's controlled and clean process come from savings in maintenance and energy consumption, compared to alternative systems.

 

"We chose the IRD system to crystallize, dry and preheat post-consumer bottle flakes prior to the extrusion phase, resulting in a very fast process of 15-to-20-minutes," explains Barbosa, Jr.

 

Improving the manufacturing and physical properties of recycled, food-grade PET through technology powered by infrared light has a crucial part to play in the intrinsic viscosity (IV) property, stated Marcus Vogt, sales manager of Kreyenborg's plastics division.

 

"Pre-crystallization and drying of the flakes prior to extrusion helps minimize the loss of IV from PET, a critical factor for reuse of the resin for further processing of the recycled pellets," he told.

 

"Reprocessing the flakes in the extruder reduces IV due to hydrolysis in the presence of water, and that’s why pre-drying to a homogeneous drying level with our IRD systems can limit this reduction,” Marcus Vogt continued.

 

Also, the resin does not yellow because drying time is reduced, and shearing in the extruder is thereby also reduced because the preheated material enters the extruder at constant temperature.

 

With their infrared systems, Kreyenborg has supported companies in South America. For those with existing extrusion lines without FDA approval, Kreyenborg also offers a retrofitting solution with the system IR-CLEAN, which produces food-grade flakes with FDA approval before the extrusion process.

 

Furthermore, thanks to its latest infrared development, Kreyenborg brings into the market the IR-FRESH for removing odors and/or volatile organic contaminants from recycled polyolefins.

 

"Packaging made from used polyolefins, in this case high-density polyethylene and polypropylene, tends to have a strong odor when processed into pellets," Marcus Vogt added. "Combined with greater surface area exposed to light, the rapid and direct heating using infrared technology reduces the odor in post-consumer materials."

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Source：Adsale Plastics Network Date ：2022-09-05 Editor ：JK

Recycled food-grade PET is booming in Brazil. According to a recently published official study, the nominal capacity for PET recycling in the country is around 400,000 t/year.

 

From which, about 140,000 t/year are from the only recovered thermoplastic that is approved in the country for direct contact with food and beverages (except mineral water), according to Irineu Bueno Barbosa, Jr., Partner and Commercial Director of recycler Global PET.

 

With its production having increased 60% since 2017, Global PET shows how hungry the market is for recycled food-grade PET.

 

An important reason for this growth within the last five years for Global PET has been the introduction of infrared technology, such as the IRD from Kreyenborg, into their existing lines. With Kreyenborg’s system, PET flakes are heated, dried, and crystallized before extrusion.

 

"We intensively compared conventional heating and drying technologies with that of infrared light some years ago. At the end of that study, the advantages of the IRD were clear, when compared to systems that work without pre-drying before extrusion," said Barbosa, Jr.


1.jpg

Brazilian recycler Global PET expands production with infrared dryer from KREYENBORG.


When Global PET first purchased Kreyenborg's IRD, it produced 1,500 t/month. "A year later, in 2018, we started up the second IRD and expanded production to 2,500 t/month. With the delivery of the third rotary drum in the second half of the year, we will move to 3,500 t/month of food-grade recycled PET," Barbosa, Jr. said.

 

With the 4th IRD purchased this year, Global PET forecast an increase in the production capacity to 4,500 t/month. Global PET does not cite a return on investment, but he says that the gains made with Kreyenborg's controlled and clean process come from savings in maintenance and energy consumption, compared to alternative systems.

 

"We chose the IRD system to crystallize, dry and preheat post-consumer bottle flakes prior to the extrusion phase, resulting in a very fast process of 15-to-20-minutes," explains Barbosa, Jr.

 

Improving the manufacturing and physical properties of recycled, food-grade PET through technology powered by infrared light has a crucial part to play in the intrinsic viscosity (IV) property, stated Marcus Vogt, sales manager of Kreyenborg's plastics division.

 

"Pre-crystallization and drying of the flakes prior to extrusion helps minimize the loss of IV from PET, a critical factor for reuse of the resin for further processing of the recycled pellets," he told.

 

"Reprocessing the flakes in the extruder reduces IV due to hydrolysis in the presence of water, and that’s why pre-drying to a homogeneous drying level with our IRD systems can limit this reduction,” Marcus Vogt continued.

 

Also, the resin does not yellow because drying time is reduced, and shearing in the extruder is thereby also reduced because the preheated material enters the extruder at constant temperature.

 

With their infrared systems, Kreyenborg has supported companies in South America. For those with existing extrusion lines without FDA approval, Kreyenborg also offers a retrofitting solution with the system IR-CLEAN, which produces food-grade flakes with FDA approval before the extrusion process.

 

Furthermore, thanks to its latest infrared development, Kreyenborg brings into the market the IR-FRESH for removing odors and/or volatile organic contaminants from recycled polyolefins.

 

"Packaging made from used polyolefins, in this case high-density polyethylene and polypropylene, tends to have a strong odor when processed into pellets," Marcus Vogt added. "Combined with greater surface area exposed to light, the rapid and direct heating using infrared technology reduces the odor in post-consumer materials."

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Brazilian recycler expands production with KREYENBORG's infrared dryer

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