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Home > News > Packaging

Value chain collaboration creates de-inkable mono-PE pouch with barrier properties

Source:Adsale Plastics Network Date :2023-03-23 Editor :JK
Copyright: 原创,请勿转载

A unique value chain collaboration of ExxonMobil, Henkel, Kraus Folie, Siegwerk and Windmöller & Hölscher has innovated a recyclable mono-material PE pouch that has similar properties to barely recyclable multi-material laminated pouches. The new pouches utilize the latest polymers, inks, functional coatings, adhesives and conversion technology.

 

The innovation allows for pouches that provide a high oxygen barrier, package integrity and shelf-appeal, and produces an almost colorless recyclate after the removal of printing ink and the oxygen-barrier coating layer.

 

Delamination and Deinking

 

In order to produce a colorless recyclate, the delamination and removal of the printing ink and coating from the laminate structure is crucial. To this end, Siegwerk's delamination/deinking primer technology was applied on a Windmöller & Hölscher MIRAFLEX, a flexo printing press with a downstream unit.


Depending on the requirements either solvent- (SB) or water-based (WB) primer from Siegwerk's CIRKIT ClearPrime product range are available. Applying industrial hot-washing conditions enables delamination and deinking of the pouch, giving an almost colorless recyclate.


1_web.png

The de-inkable, recyclable mono-material PE-pouch with barrier properties.

 

High Oxygen Barrier

 

High oxygen barrier properties had been achieved through the use of Loctite Liofol BC 1582 RE, a recently introduced 1-component barrier coating from Henkel, and CIRKIT OxyBar BC 1582 from Siegwerk. The coating can be applied on both flexo and gravure presses at industrial machine speeds on various substrates, giving high transparency.

 

Its compatibility with recycling has been confirmed by Cyclos HTP and it also meets Critical Guidance by the Association of Plastic Recyclers (APR). To match these requirements, appropriate colored and white inks from Siegwerk were used.

 

Laminating Adhesive

 

To improve recyclability, the partners used Henkel’s new solvent-free, 2-component polyurethane laminating adhesive, LOCTITE LIOFOL LA 7102 RE / 6902 RE. The system has been designed for mono-material structures and been recognized for its compatibility with recycling as certified by RecyClass.

 

Package Integrity

 

High packaging integrity is achieved using ExxonMobil’s latest generation of performance polyethylene such as Exceed S and Exceed XP, in combination with Exact materials in the sealant layer.

 

The MDO-PE films had been developed by ExxonMobil and Kraus Folie, employing ExxonMobil HDPE and Enable performance polyethylene, and produced on their VAREX extrusion line with inline MDO unit.

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Source:Adsale Plastics Network Date :2023-03-23 Editor :JK
Copyright: 原创,请勿转载

A unique value chain collaboration of ExxonMobil, Henkel, Kraus Folie, Siegwerk and Windmöller & Hölscher has innovated a recyclable mono-material PE pouch that has similar properties to barely recyclable multi-material laminated pouches. The new pouches utilize the latest polymers, inks, functional coatings, adhesives and conversion technology.

 

The innovation allows for pouches that provide a high oxygen barrier, package integrity and shelf-appeal, and produces an almost colorless recyclate after the removal of printing ink and the oxygen-barrier coating layer.

 

Delamination and Deinking

 

In order to produce a colorless recyclate, the delamination and removal of the printing ink and coating from the laminate structure is crucial. To this end, Siegwerk's delamination/deinking primer technology was applied on a Windmöller & Hölscher MIRAFLEX, a flexo printing press with a downstream unit.


Depending on the requirements either solvent- (SB) or water-based (WB) primer from Siegwerk's CIRKIT ClearPrime product range are available. Applying industrial hot-washing conditions enables delamination and deinking of the pouch, giving an almost colorless recyclate.


1_web.png

The de-inkable, recyclable mono-material PE-pouch with barrier properties.

 

High Oxygen Barrier

 

High oxygen barrier properties had been achieved through the use of Loctite Liofol BC 1582 RE, a recently introduced 1-component barrier coating from Henkel, and CIRKIT OxyBar BC 1582 from Siegwerk. The coating can be applied on both flexo and gravure presses at industrial machine speeds on various substrates, giving high transparency.

 

Its compatibility with recycling has been confirmed by Cyclos HTP and it also meets Critical Guidance by the Association of Plastic Recyclers (APR). To match these requirements, appropriate colored and white inks from Siegwerk were used.

 

Laminating Adhesive

 

To improve recyclability, the partners used Henkel’s new solvent-free, 2-component polyurethane laminating adhesive, LOCTITE LIOFOL LA 7102 RE / 6902 RE. The system has been designed for mono-material structures and been recognized for its compatibility with recycling as certified by RecyClass.

 

Package Integrity

 

High packaging integrity is achieved using ExxonMobil’s latest generation of performance polyethylene such as Exceed S and Exceed XP, in combination with Exact materials in the sealant layer.

 

The MDO-PE films had been developed by ExxonMobil and Kraus Folie, employing ExxonMobil HDPE and Enable performance polyethylene, and produced on their VAREX extrusion line with inline MDO unit.

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Value chain collaboration creates de-inkable mono-PE pouch with barrier properties

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