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Home > News > Packaging

Kiefel's machines allow thermoforming from recycled PP films

Source：Adsale Plastics Network Date ：2022-01-20 Editor ：JK

Kiefel GmbH joined the research initiative PrintCYC and has gained further insights into promoting the circular economy of plastic packaging through material recycling.

 

PU-based printing inks allowed the production of color-stable, odorless and defect-free recyclates from fully printed PP-based packaging films by mechanical material recycling, incorporated into flat films without any problems and deep-drawn on thermoforming machines from Kiefel with lower energy consumption.

 

This will open up new possibilities for recycling post-industrial printed film waste and potential for zero-waste production along the value chain of PP-based packaging for packaging manufacturers.


1.jpg

Deep-drawn cups and bowls with> 50% PP recyclate, made from printed PP film.


Kiefel has successfully thermoformed both colored trays and cups from the recycled PP flat films, on the KMD and KTR series machines.

 

"The machine settings practically did not have to be changed from processing of new material," emphasized Olaf Tanner, Head of Project and Product Management in the Packaging division at Kiefel. "The shape, appearance and functionality of the deep-drawn, recycled packaging is so good that it represents a real alternative to non-food packaging made from virgin material."


2.jpg

Increased amounts of rPP reduce energy consumption in cup production.


In addition, with the increasing proportion of recycled material, savings of up to 20% in heating energy could be observed in the production of deep-drawn PP cups compared to virgin material. This effect can even be further enhanced through the use of dark recyclates due to the better heat absorption.

 

This opens up interesting possibilities for packaging manufacturers to reduce the proportion of new materials in their containers to contribute to the climate and to save energy.

 

The recyclates have also been incorporated up to 100% into the middle layer of ABA flat film structures of different thicknesses (500 μm, 800 μm) without any issues. The use of extrusion technology, equipped with a single screw without degassing or a twin screw with degassing, has proven equally suitable for producing color films free of defects and odors with very good thickness uniformity and stretchability.

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 HENAN TENGYUE MACHINERY TECHNOLOGY CO.,LTD.      
 ZHONGSHAN SAMPROMOLD MAKING CO.,LTD      
 NANJING SAGE ADVANCED MATERIALS CO.，LTD      
 GOOD VISION & MOTION（SHENZHEN）CO,. LTD.      
 ANHUI LITUO ENVIRONMENTAL PROTECTION NEW MATERIAL TECHNOLOGY CO.. LTD.      
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 FCS-Group      
 GREENWICH (CHINA) TECHNOLOGY DEVELOPMENT LIMITED      
 TIANJIN PENGFEI PACKAGING PRODUCTS CO., LTD      
 WUHAN CHANGXIN PLASTIC MACHINERY CO.,LTD.      
 HAITIAN INTERNATIONAL HOLDINGS LIMITED      
 QINGZHOU MACRO SECCO PACKAGING MATERIALS CO., LTD.      
 DSP CHEMICAL CO.,LTD      
 FOSHAN AILE PLASTIC MOULD CO., LTD      
 Shantou Bond Machinery Co., Ltd.      
 TAIZHOU HAIHUI MOULD CO.,LTD.      
 INTERNATIONAL STANDARD MACHINERY (SHANTOU) CO.,LTD      
 WUHAN YINFENG PLASTIC MACHINE CO., LTD.      
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Source：Adsale Plastics Network Date ：2022-01-20 Editor ：JK

Kiefel GmbH joined the research initiative PrintCYC and has gained further insights into promoting the circular economy of plastic packaging through material recycling.

 

PU-based printing inks allowed the production of color-stable, odorless and defect-free recyclates from fully printed PP-based packaging films by mechanical material recycling, incorporated into flat films without any problems and deep-drawn on thermoforming machines from Kiefel with lower energy consumption.

 

This will open up new possibilities for recycling post-industrial printed film waste and potential for zero-waste production along the value chain of PP-based packaging for packaging manufacturers.


1.jpg

Deep-drawn cups and bowls with> 50% PP recyclate, made from printed PP film.


Kiefel has successfully thermoformed both colored trays and cups from the recycled PP flat films, on the KMD and KTR series machines.

 

"The machine settings practically did not have to be changed from processing of new material," emphasized Olaf Tanner, Head of Project and Product Management in the Packaging division at Kiefel. "The shape, appearance and functionality of the deep-drawn, recycled packaging is so good that it represents a real alternative to non-food packaging made from virgin material."


2.jpg

Increased amounts of rPP reduce energy consumption in cup production.


In addition, with the increasing proportion of recycled material, savings of up to 20% in heating energy could be observed in the production of deep-drawn PP cups compared to virgin material. This effect can even be further enhanced through the use of dark recyclates due to the better heat absorption.

 

This opens up interesting possibilities for packaging manufacturers to reduce the proportion of new materials in their containers to contribute to the climate and to save energy.

 

The recyclates have also been incorporated up to 100% into the middle layer of ABA flat film structures of different thicknesses (500 μm, 800 μm) without any issues. The use of extrusion technology, equipped with a single screw without degassing or a twin screw with degassing, has proven equally suitable for producing color films free of defects and odors with very good thickness uniformity and stretchability.

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Kiefel's machines allow thermoforming from recycled PP films

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